Device and procedure for control of cooling systems

FIELD: machine building.

SUBSTANCE: cooling or heating system contains at least compressor (2), condenser (4), adjusting device (17A), evaporator (20) and control device (7A). Control device (7A) receives liquid from condenser (4) and has an outlet orifice into pipeline (9) for condensate and inlet facilities coming into signal channel (6, 10). Pipeline (9) for condensate is coupled with adjusting device (17A). Control facilities (12, 13) are connected to the signal channel for control over adjusting device (17A) opening. The system is equipped with evaporating facilities (8, 11, 18, 34) for evaporation of liquid coming into signal channel (6, 10). Control device (7A) is installed in the condenser or near inlet orifice of condenser (4), owing to which the said control is actuated with amount of liquid evaporated in signal channel (6, 10).

EFFECT: reduced losses of power.

17 cl, 7 dwg

 

The technical field

The invention relates to a cooling or heating device, containing at least the compressor, the condenser, the regulating device and the evaporator.

The invention also relates to a method to control a cooling or heating device, containing at least the compressor, the condenser, the regulating device and the evaporator.

The invention is applicable in a cooling or heating systems, in which the working medium used in the evaporative and/or condensing the refrigerant. The proposed system can be used in cooling devices of any type, such as devices for air conditioning, heat pumps, systems, process cooling and refrigeration devices using reciprocating compressors, screw compressors, scroll compressors, centrifugal compressors, circulating compressor or some other types of compressors and all types of refrigerants for heat transfer by evaporation and/or condensation.

The level of technology

On the market there are different systems for regulation and control of cooling and heating. However, the systems used are often complex and require a lot of space, and therefore are unreasonably expensive. Due to the large size and complexity of these systems with the speed control and the efficiency is much lower than expected. The following summarizes some of the known systems that possess some of the above disadvantages.

In the US patents And 4,566,288 and GB And 659,051 describes the various float regulators that directly or indirectly affect the gate electric pulses and the signals on the valve regulating the flow of condensate at the outlet. These systems are, first, complex, and, secondly, they run using electrical impulses, so that they do not operate on the principle of direct action. In addition, they have a valve connected to the float for regulating the amount of the condensate, so they are characterized by large dimensions and volume.

In the US patents And 3,388,558 and EP AND 0,939,880 described system with thermostatic radiator valves, which by the electric heating of the sensitive element of the system affect the membrane, opening the valve when the pressure increases. None of these systems works on the principle of direct action, as the control pulse is caused by heating by means of electric resistance of the bulb when applying the control signal with an external modulation.

In the patent US A 5,156,017 described system with a thermostat, in which the flow is controlled by using the temperature difference between the subcooling of the condensate at the outlet and condensing temperature. However, such a control does not allow p what color to use surface condenser, so as to regulate the condensate at the outlet of the required contour of hypothermia.

In the patent US A 3,367,130 described system with traditional thermostatic expansion valve, managing difference between the evaporation temperature and the temperature of the superheated gas in the evaporator by means of pulses fed gas-filled temperature-sensitive sensor. System control overheated after evaporation of the gas, therefore, the control pulse control valve may have a negative impact on the temperature difference between the refrigerant and the heat-generating environment.

In the patent US A 4,267,702 described system with valve, pressure-sensitive, which completely or partially covers the fluid flow depending on the pressure drop during operation and pressure when stopping. However, these systems do not regulate the output flow of condensate depending on the unfused gas. Thus, the quality of the condensate does not affect the function of regulation.

Thus, there is a need for a system that removes the drawbacks of the aforementioned systems.

Description of the invention

The present invention is to reduce unnecessary power loss caused by the presence of gas condensate.

Another object of the invention is to solve the problem of regulating fluid flow, postupayushie the capacitor, so that unfused gas is not passed through a control device for condenser control.

The task of one of the embodiments of the invention is to solve the problem of recycling of heat hypothermia without reducing the capacity of the condensation condenser.

According to the first preferred variant of the invention, the object of the invention is to solve the problem of regulating fluid flow through the pressure pulses applied to the valves of known construction.

In another embodiment of the invention object of the invention is to solve the problem of regulating fluid flow in a cooling system and/or heat pump system with float valve for supplying a signal to control valve.

In addition, the object of the invention is the regulation of fluid flow so that the system worked according to the principle of direct action, without requiring external, such as electrical control device.

Finally, the object of the invention is to solve the problem of providing the surface of the evaporator refrigerant without the need of suction superheat steam at flow control.

These tasks are solved by creating a cooling and heating devices in accordance with the distinctive part of items 1 the 14 claims and dependent claims.

These tasks are solved due to the fact that in the cooling or heating system, containing at least the compressor, the condenser, the regulating device and the evaporator, the control device is arranged to receive liquid from the condenser and having an outlet leading into the pipeline for condensate, and inlet means leading into the signaling channel; and piping for condensate connected to the regulating device and to the signal channel means attached to control opening of the regulating device includes a vaporizing means for vaporizing the liquid flowing in the signal channel, and the control device is located in the condenser or in the vicinity of the outlet of the condenser thanks for the specified control affects the amount of liquid evaporated in the signal channel.

In addition, in the proposed system, the pressure in the signal path depends on the amount of liquid evaporated in the channel, and from the specified control.

In addition, in the proposed system near the inlet means of the signal channel are volatile funds, representing the aperture to reduce the pressure and thereby the evaporation of the contained liquid.

In addition, in the proposed system, the signaling channel is connected at least with DNIe evaporating means, representing a heat exchanger to vaporize the liquid present in the specified signaling channel.

In addition, in the proposed system signal channel connected to the piping for hot gas and/or pipeline for condensate to the evaporation of the liquid flowing through the signaling channel.

In addition, in the proposed system outlet port leading to the pipe for condensate, is located in the lower part of the control device, and the inlet means leading from the device to the signaling channel, are arranged so that the gas bubbles present in the condensate coming from the condensate in the inlet means.

In addition, in the proposed system, the control device is equipped with a sight glass, which enables to observe the separation of gas bubbles.

In addition, in the proposed system parallel to the regulating device is a pipeline signal stream.

In addition, in the proposed system, the amount of liquid evaporated in the signal channel, affects the temperature in the signal channel, which in turn affects the specified control.

In addition, the proposed system is equipped with a float regulating inlet means leading from the control device in the signal channel.

In addition, in the proposed system signals in the channel or near it there is a sensor for temperature measurement in the signal channel.

In addition, in the proposed system between the signal channel and the low-pressure side of the system is volatile agent, representing the aperture.

In addition, in the proposed system by opening the regulating device is controlled by the exposure control means representing the membrane pressure-sensitive.

Also, these tasks are solved by creating a control method of a cooling or heating system, containing at least the compressor, the condenser, the regulating device and the evaporator, which includes the direction of fluid from the control device, configured to receive fluid from the condenser, piping, condensate and into the inlet means leading into the signaling channel, and the opening control of the regulating device connected to the pipeline for condensate, depending on changes in the signal channel, whereby to provide an evaporation of at least part of the fluid directed to the signaling channel.

In addition, in the proposed method by opening the regulating device is controlled depending on the pressure change in the signal channel induced by the specified evaporation.

In addition, in the proposed method present in the signal channel, the fluid ispar the Ute by summing up the heat or pressure reduction in the signal channel.

In addition, the proposed method further includes controlling fluid flow in the inlet means leading into the signaling channel, and the opening control of the regulating device connected to the pipeline for condensate, depending on the temperature changes in the signal path caused by the evaporation of the liquid.

Brief description of drawings

Below is the description of the invention, which is not restrictive and, for clarity, including the drawings, in which:

figure 1 depicts a control system according to a preferred variant implementation of the present invention,

figa depicts a front view of the device for detecting gas bubbles according to the present invention, Fig. 2B depicts a side view of a device for detecting gas bubbles according to the present invention,

figure 3 depicts a heat exchanger according to the present invention,

figure 4 depicts the control system according to the alternative implementation of the present invention,

figure 5 depicts the float device according to the present invention,

6 depicts an alternative arrangement of the control device.

Detailed description of the invention

Figure 1 shows a system for use in heating, cooling or freezing systems. In the system and euda channels, containing refrigerant (not shown), a compressor 2, a condenser 4, a regulating device, representing and regulating valves 17A, the evaporator 20, the separator 24, the liquid device 21 for the oil return, the battery 23 and the control device, including a device 7A for controlling the presence of gas bubbles, designed to control the regulator valve 17A.

When opening the valve 17A of the condensed refrigerant flows to the side 19 of the low pressure system, where it is expanding. After that, the refrigerant flows to the evaporator 20 where the gas, usually air or fluid provides heat gain, thus vaporizing the liquid refrigerant. Then a gas-liquid mixture under pressure is directed into the separator 24 of the liquid, where the liquid is separated from gas. Gravity of the fluid passes through the heat exchanger, where the share of oil and liquid refrigerant, after which the oil return to the compressor 2 through the battery 23 and the suction pipe 1. Not evaporated liquid in the return channel of the separator 24 of the liquid in the evaporator 20. The compressor 2 compresses the refrigerant, which is then cooled in the condenser 4, where condensation occurs. Figure 6 presents an alternative embodiment of the invention, in which the control device is located in kondensatorent output holes.

On figa and 2B 7A shows a device for checking the presence of gas bubbles according to a preferred variant of the invention, equipped with a dry scrubber 22 and sight glass 25. Because not all of the gas condenses while passing through the condenser 4, the refrigerant can still be gas bubbles. Unit 7A separates unfused gas directly in front of the observation window 25 so that the control process with the separation of gas bubbles can be seen. During operation of the gas compressor through the inlet means, representing the hole 14 of the signal channel, and a vaporizing means for vaporizing the liquid, which is a diaphragm 8, flows in the signal channel 6. The gas then flows through the heat exchanger 11, after which the channel 6 enters the signaling channel 10. The channel 10 may be connected to the heater. The gas causes a change in the pressure acting on the control means, which is a membrane 12 to control the opening of the control valve 17A attached to the channel 10. Changes in the pressure acting on the membrane 12, in turn, affect control means, which is a mechanism, for example the piston 13, whereby control the opening of the regulating valve. Near the channel 10 are also volatile cf is DSTV for evaporation of the liquid, representing the aperture 18 that is associated with the outlet side with the side 37 of the low-pressure cooling system. Depending on the pressure generated by the flowing gas, the gas flows through the aperture 18. As a result, the membrane 12 creates a pressure in excess of the reference pressure in the space behind the membrane 12, soobshayem side 37 of low pressure through back-channel 26.

When the liquid, namely, the condensate flows into the inlet 14 of the signal channel, it must pass through the aperture 8, resulting in the expansion by evaporation of a liquid by lowering the pressure provided by the diaphragm 8. Then vapor-liquid mixture formed in the channel 6 with the aperture 8, further evaporated in one of the evaporating means for evaporating the liquid constituting the heat-exchange device, in particular a heat exchanger 11 and the electric 34. In the evaporation process is an increase in volume, and essentially all of the liquid passes into the gaseous state. Thereafter, the gas flows through the channel 10 to the pressure-sensitive valve 17A, which is open 16 using, for example, of the piston 13, after which the gas under pressure is directed through the aperture 18 to the side 37 of the low-pressure cooling and/or heating pumping systems.

If the intake means is a, representing the inlet 14 of the signal channel, instead of the pure liquid, as described above, serves gas or vapor-liquid mixture, there is a smaller increase. This affects the pressure in the channel 10, which also provides a closure mechanism (piston 13) of the valve. If the engine (piston 13) stops the flow, the valve 17A overlaps the passage of condensate through the channel 9 for condensate originating from the device 7A. The diaphragm 8 has a smaller bandwidth than the aperture 18, so that even a small amount of unfused refrigerant can apply for gate opening 17A impulse. Aperture supports 18 on the high pressure side higher pressure than the low-pressure side, thereby allowing a signal to control valve.

Parallel to the valve 17A laid pipe 36A of the signal flow. When this valve is closed, and through him receive the signal flow, so that after starting the cooling system faster pulse is supplied to the inlet 14 of the channel 6.

Figure 3 presents the heat exchanger 11 for evaporation of the liquid flowing through the channel 6, 10. Channel 6, 10 preferably has an outer diameter of about 3 mm and attached to the pipe 3, 9, preferably with the formation of the pipeline 3, 9 circuit, containing, respectively, the hot g is C or condensate, to achieve the maximum possible heat transfer.

Figure 4 presents the control system according to the alternative embodiment of the invention. In this embodiment, instead of a device 7A, is used to control the presence of gas bubbles according to a variant embodiment of the invention, represented in figure 1 used control device representing a float control device 7B, presented on figure 5. The device 7B via the signal channel 31, the temperature-sensitive sensor, which is sensitive element 28, and the signaling channel 27 delivers control pulses to the regulating device, which represents a thermostatic expansion valve 17C.

To provide a sufficient quantity of condensate from the condenser 4 of the floating body, which is a float 29, raise 33, and the inlet means of representing the valve 30 open, causing the liquid flows in the channel 31. Aperture 18 located between the intake valve 30 channel 31 and the side 37 of the low pressure system is configured bandwidth of the valve 30 with respect to the aperture 18 so that when a sufficiently powerful flow of refrigerant through the valve 30 into the channel 31 and the sensing element 28 increases the temperature. Aperture 18 is configured at a lower flow than the inlet valve 30, t is either the valve is fully open. Here aperture 18 supports a higher temperature on the high pressure side than on the low-pressure side.

If the refrigerant flow channel 31 exceeds a specific level, the diaphragm 18 can't miss the refrigerant amount sufficient to provide sufficient evaporation of the refrigerant from a liquid phase to a gaseous phase in the channel 31, causing the temperature in the channel 31 is growing, which leads to opening of the valve 17B.

If there is no need to open the inlet valve 30 and to ensure a sufficient supply of liquid in the channel 31, channel evaporation amount, allowing you to lower it's temperature. The sensing element 28 of the valve 17B registers the temperature decreases, causing a decrease in the steam pressure in the space behind the membrane 12 of the bellows. This reduction in pressure causes the membrane 12 provides the mechanism (piston 13) valve 17B signal to close, which reduces the flow through the valve 17B.

Above the diaphragm 8, 18, the heat exchange device 11, 34, and inlet means 30 are evaporating means for evaporating the liquid flowing in the signal channel.

The system presented in figure 4, can also be equipped with a heater or similar device for the evaporation of the liquid present in the channel 31, even the EU is and this is not necessary.

The proposed system provides a simple, low cost and high speed of cooling and/or heating system.

In the invention through a small amount of condensate from the valve 30 to control a much larger amount of condensate flowing through the valve 17B.

It should be noted that this invention is not limited to the above-described variants of the invention, illustrated by the attached drawings. Possible changes, such as the use of other parts or similar technology, without deviating from the scope of the claims, is limited by the claims.

Legend

1 - suction pipe for gas without admixture of liquid.

2 - compressor.

3 - pipe for hot gas.

4 - condenser for heat removal. Communicates with air or liquid.

5 - channel for condensation.

6 is a signaling channel for the aperture 8 in front of the heat exchanger 11.

7A - control device for controlling the presence of gas bubbles.

7B - buoyancy control device (the float and the float case with valve).

8 - aperture.

9 - pipeline for condensate.

10 is a signaling channel.

11 - heat exchanger.

12 - membrane pressure-sensitive.

13 is a piston, which presses the membrane and which is prawley regulator valve 17A.

14 - inlet channel 6, 10.

15 - the process of closing.

16 - the process of opening.

17A - regulating valve.

17V - thermostatic expansion valve.

18 - aperture.

19 - expansion channel, the low-pressure side.

20 - evaporator to absorb heat.

21 is a device for returning the oil from the accumulator with heat to vaporize the refrigerant.

22 - dry scrubber.

23 - battery.

24 - liquid separator.

25 - sight glass.

26 - signaling channel, back-channel.

27 - signaling channel, leading to the control valve.

28 - sensing sensor.

29 is a float.

30 - valve, which influences the float 29.

31 - signaling channel between the float valve and the diaphragm 18.

the 32 - valve is closed at low fluid level.

33 - opening or lifting of the valve 30 when the high liquid level.

34 - electric.

35 is a heat exchanger for cooling of the fluid and/or heat recovery from condensate.

36A - pipeline signal flow in the bypass control valve.

37 - the low-pressure side.

1. The cooling or heating system, containing at least a compressor (2), a condenser (4), the regulating device (17A; 17B) and the evaporator (20), control device (7A; 7B), performed with the hidcote from the condenser (4) and having an outlet opening, leading into the pipe (9) for the condensate, and the inlet means (14; 30), leading to the signaling channel (6, 10; 31), and conduit (9) for condensate connected to the regulating device (17A; 17B), and the signal channel connected control means (12, 13) for controlling the opening of the regulating device (17A; 17B), wherein the system has a vaporizing means(8, 11, 18, 30, 34) for evaporation of the liquid flowing in the signal channel (6, 10; 31)and control device (7A;7B) is located in the condenser or in the vicinity of the outlet of the condenser (4), so that the specified control affects the amount of liquid evaporated in the signal channel(6, 10; 31).

2. The system according to claim 1, characterized in that the pressure in the signal channel (6, 10; 31) depends on the amount of liquid evaporated in the channel, and from the specified control.

3. The system according to claim 1 or 2, characterized in that near the inlet means (14) of the signal channel (6) are volatile funds, representing the aperture (8) for reducing the pressure and thereby the evaporation of the contained liquid.

4. The system according to claim 1 or 2, characterized in that the signaling channel (6, 10, 31) is connected with at least one volatile funds, representing a heat exchanger (11, 34) for evaporation of the liquid present in the specified signal to the patient.

5. The system according to claim 4, characterized in that the signaling channel (6, 10, 31) connected to the piping (3) for hot gas and/or pipeline (9) for the condensate to the evaporation of the liquid flowing through the signaling channel(6, 10, 31).

6. System according to any one of claims 1 and 2 or 5, characterized in that the outlet leading to the conduit (9) for the condensate is in the lower part of the control device (7A), and inlet means (14)leading from the device (7A) in the signal channel (6), are arranged so that the gas bubbles present in the condensate coming from the condensate in the inlet means (14).

7. The system according to claim 6, characterized in that the control unit (7A) is provided with a viewing glass (25), which enables to observe the separation of gas bubbles.

8. System according to any one of claims 1 and 2, 5 or 7, characterized in that parallel to the regulating device (17A) is a manifold (36A) of the signal stream.

9. The system according to claim 1, characterized in that the amount of liquid evaporated in the signal channel (6, 10, 31), affects the temperature in the signal channel (6, 10, 31), which in turn affects the specified control.

10. The system according to claim 9, characterized in that it is provided with float (29), regulating the inlet means (30), leading from the control device (7B) in the signal channel (31).

11. System according to any one of claims 1 and 2, 5, 7, and 9 and 10, characterized in that in the signal channel (31) or near it there is a sensor (28) for temperature measurement in the signal channel (31).

12. System according to any one of claims 1 and 2, 5, 7 or 9 and 10, characterized in that between the signaling channel (6, 10, 31) and the side (37) of the low pressure system is located volatile agent, representing the aperture (18).

13. System according to any one of claims 1 and 2, 5, 7 or 9 and 10, characterized in that the opening regulating device (17A; 17B) is controlled by the exposure control means, which is a membrane (12), pressure-sensitive.

14. The way to control a cooling or heating system, containing at least a compressor (2), a condenser (4), the regulating device (17A; 17B) and the evaporator (20), the method includes the direction of fluid from the control unit (7A)is arranged to receive liquid from the condenser (4), the pipe (9) for the condensate and in the intake means (14, 30), leading to the signaling channel (6, 10, 31), and the opening control of the regulating device (17A, 17B)is connected to pipe (9) for condensate, depending on changes in the signal channel (6,10, 31), characterized in that provide the evaporation of at least part of the fluid directed to the signaling channel(6, 10, 31).

15. The method according to 14, characterized in, Thu the opening regulating device (17A, 17B) is controlled depending on the pressure change in the signal channel (6,10, 31), induced by the specified evaporation.

16. The method according to 14 or 15, characterized in that present in the signal channel (6, 10) the liquid is evaporated by summing up the heat or pressure reduction in the signal channel (6, 10).

17. The method according to 14, characterized in that it further includes control fluid flow in the inlet means (30), leading to the signaling channel (31), and the opening control of the regulating device (17B)is connected to the conduit (9) for condensate, depending on the temperature change in the signal channel (31), caused by the evaporation of the liquid.



 

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FIELD: heating systems.

SUBSTANCE: suction orifice tube intended for refrigerating device includes suction tube (13) routed parallel to suction tube (13), orifice tube (14) and adhesive tape (19), the middle strip (20) of which is bonded to orifice tube (14), and two side strips (21, 22) enveloping middle strip (20) are bonded to suction tube (13) and covered on suction tube (13) from the side opposite to orifice tube (14). Free end of side strip (21, 22) is sealed with plastic or elastic mixture. Suction orifice tube manufacturing device has at least the first and the second roller (1, 2; 3, 4; 5, 6; 7, 8), the circles of which face each other and form clearance (15, 24); at that, at least on circumferential surface of the first roller (1; 3; 5; 7) there is slot (10, 25) for suction tube for directing suction tube (13) through clearance (24), and at slot bottom (10, 25) for suction tube there formed is slot (12) for orifice tube for directing orifice tube (14) in contact with suction tube (13).

EFFECT: use of invention will allow increasing resistance of suction orifice tube.

9 cl, 8 dwg

FIELD: heating.

SUBSTANCE: proposed invention relates to a refrigerating unit with a throttle pipe (1) and a suction pipe (2) for cooling agent; the throttle pipe (1) in the first point (A) of the suction pipe (2) is inserted into the suction pipe (2) and connected to it. The throttle pipe (1) and the suction pipe (2) are interconnected in another, second point (B) of the suction pipe (2) where the outer surfaces of the throttle pipe (1) and the suction pipe (2) are contacting. As per the invention the outer surfaces of the throttle pipe (1) and the suction coil (2) in the second point (B) are interconnected by ultrasonic welding. The proposed invention relates also to the method of connection of the throttle pipe (1) and the suction pipe (2).

EFFECT: application of the invention allows for the cheap and simple protection of the throttle pipe against crumpling at the point of insertion into the suction pipe.

6 cl, 1 dwg

FIELD: mechanics.

SUBSTANCE: cooling loop (2) for circulation of coolant in preliminary specified direction of flow contains in the direction of flow heat-eliminating heat exchanger (4), throttle valve (8) of evaporator, evaporator (10), compressor (22), internal heat exchanger (16), "cold face" of which is located between evaporator (10) and compressor (22), sensor (24) of temperature on inlet, located between evaporator (10) and internal heat exchanger (16), and sensor (26) of temperature on inlet, located between internal heat exchanger (16) and compressor (22), and control device (28) for control of throttle valve (8) of evaporator on the basis of measurements by temperature sensors on outlet and inlet. Control device is implemented with ability of control by throttle valve (8) of evaporator on the basis of installation of temperature on outlet in sensor (24) of temperature on inlet and shift of temperature installation on outlet on the basis of measurement by sensor (26) of temperature on outlet.

EFFECT: providing of adaptation of cooling loop to different conditions of operation in winter and summer modes.

12 cl, 1 dwg

Refrigerating unit // 2362095

FIELD: instrument making.

SUBSTANCE: invention relates to refrigerating equipment. The proposed refrigerating unit incorporates consecutively mounted device to increase operating medium temperature and pressure, condenser, throttling device and evaporator. It comprises additional pipeline with its input connected to aforesaid device that serves to increase operating medium temperature and pressure and output connected to condenser output and throttling device input. Aforesaid additional pipeline is fitted parallel to the said condenser and furnished with superheated vapor metered-feed device that receives the said superheated vapor from the device to increase operating medium temperature and pressure. The superheated vapor metered-feed device represents a jet, electromagnetic valve, or servo-drive gate.

EFFECT: increased refrigeration ratio.

2 cl, 4 dwg

FIELD: heating; refrigerating or freezing plants.

SUBSTANCE: closed refrigerating circuit comprises compressor (1), condenser (2), evaporator (4), receiver (9), capillary tube (8) between condenser and receiver, capillary tube (10) between receiver and evaporator and thermal contact (11) between suction pipeline and receiver. Suction pipeline is oriented so that sucked gas passes through receiver from its lower part to upper part. Cooling agent in receiver flows from its upper part to lower part. There is thermal contact (12) between suction pipeline and capillary tube (8), which connects condenser and receiver.

EFFECT: superheating of sucked gas, prevention of water condensation in suction pipeline and increased efficiency factor.

2 cl, 3 dwg

FIELD: cooling equipment, particularly to control coolant flow.

SUBSTANCE: flow regulator is formed of capillary tubes serially connected one to another and having different inner diameters and lengths. The capillary tubes are arranged so that capillary tube having greater diameter is installed before one having lesser diameter in direction of coolant flow from cooling unit condenser.

EFFECT: increased efficiency of cooling unit operation in cooling and heat pump regimes, as well as simplified manufacturing and computation.

2 dwg

Evaporative unit // 2185577
The invention relates to evaporative unit with at least two spaced each other with a serial connection, loaded from the compressor with the refrigerant through the injection site evaporators different cooling capacity, and the lower evaporator cooling capacity is made in the form of a sheet, while the evaporator is higher cooling capacity equipped with a pipe serving to guide the refrigerant, and is connected in series before the lower evaporator cooling capacity

FIELD: heating.

SUBSTANCE: air cooling method consists in the fact that cooling agent vapours circulating via closed circuit are concentrated, cooled, condensed and throttled. Then, heat is supplied to cooling agent and it is converted to gaseous state so that cooling agent vapours are formed with the specified minimum temperature. Air is cooled by means of accumulator which is pre-cooled during the cooling agent circulation by means of heat exchange with circulating cooling agent to the temperature which is lower than the specified minimum temperature of air cooling. Then, cooling agent circulation is stopped and air is cooled by heat removal from cooled air to the accumulator. Air cooling device includes closed circuit having the device for increasing the cooling agent concentration, condenser, throttling device and device for heat supply to cooling agent. Device for heat supply to cooling agent is located in upper part of closed cavity with cooled air and represents heat accumulator and is made from metal with high heat conductivity. Finning is made on outer surface of accumulator.

EFFECT: reducing electric energy consumption.

2 cl, 2 dwg

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