The evaporator of the refrigerating unit
(57) Abstract:The evaporator of the refrigeration unit includes an evaporator tube, thermostatic expansion valve and solenoid valve. Thermostatic expansion valve consists of a casing with inlet and outlet chambers, a gauge system, the temperature-sensitive sensor which is installed at the outlet of the evaporator tube, the valve that changes the flow of refrigerant depending on overheating vapors at the outlet of the evaporator tube, the spring configuration and mechanism regulating the initial effort this spring. Solenoid valve consists of a solenoid coil, a core, with a fixed valve and return springs. Solenoid valve installed in the inlet chamber of the valve and connected to an electrical control circuit of the compressor motor. Its core with a fixed valve is designed for tight shutoff of the supply of liquid refrigerant to the valve thermostatic expansion valve when engine is off compressor refrigeration unit. The use of the invention will improve the reliability of the evaporator, to reduce its cost, complexity of Assembly, overall dimensions, to expand the La auto cooling fluid and air.Known evaporator refrigeration unit (catalogue company Danfoss A/S (SW-c) 9.92, Denmark, S. 11), which contains sequentially interconnected: solenoid valve EVR, tightly overlapping the supply of liquid refrigerant in the evaporator tube (coil) at the stop of the compressor, thermostatic expansion valve THE regulating superheat temperature vapor refrigerant at the outlet of the evaporator tube, evaporator tube, which is the process of evaporating the cooling agent, accompanied by a selection of heat from the environment.Solenoid valves type EVR company "Danfoss" (catalogue company Danfoss A/S (SW-c) 9.92, Denmark, S. 17) consists of a die-cast housing with inlet and outlet chambers, to which is connected the inlet and outlet pipes. To the housing by means of square flange mounted electromagnetic coil core and the electrical connector, through which it is connected to the electric control circuit of the compressor motor.Thermostatic expansion valve type of the company "Danfoss" (catalogue company Danfoss A/S (SW-c) 9.92, Denmark, S. 11) consists of an extruded housing with inlet and outlet chambers, arranged at an angle of 90oamong themselves, to which podsiad embrane the cavity of the valve with the outlet of the evaporator tube. The valve body rigidly connected manometric system filled with a substance with a given dependence of pressure on temperature, remote temperature-sensitive sensor which is installed at the outlet of the evaporator tube.The disadvantages of this evaporator are: large weight and size characteristics, narrowing the scope of the evaporator, low reliability, high cost and complexity of Assembly, due to the number of separate components (components) construction of the evaporator, and, as a consequence, a large number of connections, which should provide a high degree of tightness of the evaporator.The technical object of the present invention are: to improve the reliability of the evaporator, reducing its cost, labor-intensive, Assembly, weight and size characteristics, the expansion of the scope.This objective is achieved in that a solenoid valve comprising an electromagnetic coil core and the electrical connector is installed in the inlet chamber of the housing of thermostatic expansion valve that allows without reducing functionality to reduce the number of separate components, entering the main characteristics and to extend the scope of the evaporator.The drawing shows a General view of the proposed evaporator of the refrigerating unit.The evaporator of the refrigeration unit includes a thermostatic expansion valve 1 solenoid valve 2 and the evaporator tube 3.Thermostatic expansion valve 1 consists of a housing 4 with an inlet chamber 5 and the outlet chamber 6, manometric system 7 remote temperature-sensitive sensor 8 and the diaphragm 9, a valve 10, which regulates the flow of refrigerant depending on the reheating temperature vapor refrigerant at the outlet of the evaporator tube 3, the rods 11, the spring settings 12, 13, regulating the initial force of the spring configuration 12, the pipe line 14 external pressure equalization connecting podobrannyy the cavity of the valve with the outlet of the evaporator tube 3.Solenoid valve 2 installed in the inlet chamber 5 of the housing 4 of thermostatic expansion valve 1 and consists of an electromagnetic coil 15, the return spring 16, the core 17 with a fixed valve 18, which hermetically closes off the supply of liquid refrigerant to the valve 10 of thermostatic expansion valve 1.Changing the temperature of the overheated vapour refrigerant at the outlet of the evaporator is substance in the manometric system 7. The membrane 9 compares the pressure in the gauge system 7 with the vapor pressure of the refrigerant at the outlet of the evaporator tube 3, passed in podobrannyy cavity expansion valve 1 through the pipe line 14 external pressure equalization.Depending on the magnitude of the pressure difference acting on the diaphragm 9, the last act and through the rod 11 acts on the valve 10, which, moving, changes the supply of liquid refrigerant in the evaporator tube 3.The supply of liquid refrigerant increases with temperature overheating vapors and, respectively, with increasing pressure inside the gauge system 7, and Vice versa.During operation of the refrigeration unit, the electromagnetic coil 15 of the solenoid valve 2 is turned on, which caused the occurrence of a magnetic field, under which the thrust force holds the core 17 with a fixed valve 18 within the electromagnetic coil 15, allowing the liquid cooling agent to freely flow to the valve 10 of thermostatic expansion valve 1.When stopping the compressor motor, because of the technological features or avarim 18 under the influence of return spring 16 and its own weight hermetically closes off the supply of liquid refrigerant liquid refrigerant to the valve 10 of thermostatic expansion valve 1, thereby significantly reducing the starting load on the compressor motor when it is turned on.The application of the proposed evaporator can increase the reliability of the refrigeration unit and to expand the scope of its application. The evaporator of the refrigerating unit, comprising evaporating tube and thermostatic expansion valve consisting of a casing with inlet and outlet chambers, a gauge system, the temperature-sensitive sensor which is installed at the outlet of the evaporator tube, the valve that changes the flow of refrigerant depending on overheating vapors at the outlet of the evaporator tube, the spring configuration and mechanism regulating the initial effort this spring, and solenoid valve comprising an electromagnetic coil, a core, with a fixed valve, and a return spring, wherein the solenoid valve is installed in the inlet chamber of the valve, connected to the electric control circuit of the compressor motor, and its core with a fixed valve is designed for tight shutoff of the supply of liquid refrigerant to the valve thermostatic expansion valve when engine is off you can see the compressor
FIELD: mechanical engineering.
SUBSTANCE: wire-tubular evaporator is provided with guide plate whose body is extended lengthwise and at least one tubular clip for securing the plate to evaporator tube. Tubular clip is mounted on bracket extending aside from plate body.
EFFECT: enhanced accuracy of fitting the guide plate along center line of evaporator.
8 cl, 3 dwg
FIELD: cooling and air conditioning system components, particularly evaporators.
SUBSTANCE: evaporator comprises of the first elongated flat multi-channel pipe having serpentine configuration defined by elbow members bent across the minor dimension thereof. The pipe has a number of spaced apart parallel parts extending between ends of the first pipe. Inlet member of clamping means is connected to the first pipe end, outlet member thereof is fastened to the second end thereof. Ribs are located between neighboring parts of the first pipe. The second elongated flat multi-channel pipe forms suction radiator loop. The second pipe is connected to the first one so that side wall of the second pipe defining major pipe dimension is connected to side wall of the first pipe directly upstream of the outlet member of the clamping means to provide improved heat exchange between the pipes. The second pipe ends are also fitted with inlet and outlet members of clamping means.
EFFECT: increased compactness.
20 cl, 8 dwg
FIELD: refrigeration equipment.
SUBSTANCE: cooling agent evaporator comprises cooling agent pipeline and surface connected to the pipeline through heat-conductive connection. The surface is used as heat-exchanger and is covered with water-repellent oil film. The evaporator may be of lamella type (plate type).
EFFECT: decreased noise during evaporator operation.
3 cl, 1 dwg
FIELD: cooling equipment and other industry, for instance, chemical industry.
SUBSTANCE: evaporator comprises panels or coil pipe batteries, as well as liquid and vapor manifolds with coolant. Panels or coil pipe batteries or manifold batteries extend in horizontal direction one under another and are shifted one from another. The panels or coil pipe batteries or manifold batteries are enclosed with iron sheet having varying height. Panels or coil pipe batteries or manifold batteries are inserted in metal frame fixedly connected with metal tray and hermetically closed with plastic sheets along perimeter thereof.
EFFECT: provision of necessary heat carrier temperature and continuous temperature maintenance, decreased power inputs and heat carrier volume, reduced device costs and increased safety.
1 cl, 1 dwg
SUBSTANCE: milk refrigerating unit contains square reservoir with external heat-insulating coating, evaporator, force-suction manifold of compressor-condenser device. Evaporator is of slot type and represents two halves of V-shaped bottom with injector and suction header each, which are connected accordingly with force and suction manifolds of compressor-condenser device, at that slot evaporator is made with seam welding with seam width of at least 4 mm, pitch of seams of not more than 35 mm, depth rolling of slots of not more than 3 mm.
EFFECT: exclusion of evaporator damage during its flushing with hot water.
SUBSTANCE: invention relates to refrigerating equipment used in climate tests. The proposed heat exchanger comprises a housing and evaporator. The heat exchanger housing is separated by the main baffle into inlet and outlet chambers. The inlet chamber inlet accommodates deflecting baffle. The outlet chamber outlet accommodates the outlet pipe-bend and houses the evaporator and additional baffle. The inlet and outlet chambers communicate via a gap arranged between the main baffle and heat exchanger housing. The fan is arranged between the inlet pipe-bend and the housing. The bypass is provided for between the inlet and outlet pipe-bends.
EFFECT: longer faultless operation of evaporator.
2 cl, 1 dwg
FIELD: personal demand items.
SUBSTANCE: refrigerator with a freezing chamber includes a through internal container with a freezing chamber and a storage compartment for cooled products, which are rigidly connected to each other. There is no connection line or broken edge, at that, evaporator (9) is installed on compartment (6) of the freezing chamber. Evaporator is made in the form of a box with winding, which envelopes the freezing chamber in a circumferential direction on its four sides.
EFFECT: providing more effective cooling of products.
8 cl, 3 dwg
FIELD: heating systems.
SUBSTANCE: anti-frost evaporation tube of refrigerator with drawers consists of internal housing wherein there provided is food storage compartment for arranging drawer-container, and in the latter, low temperature is maintained by means of evaporation tube for cooling agent circulation, which is located around external part of internal housing. Evaporation tube includes curved parts located on both side surfaces of internal housing and straight tube part located on upper surface of internal housing and connected to curved tube parts.
EFFECT: use of this invention allows eliminating frost formation on roof surface of refrigerator internal housing.
5 cl, 7 dwg
FIELD: heating systems.
SUBSTANCE: invention refers to cryogenic equipment, and namely to cryogenic liquid evaporators, and can be used in gasification plants. Cryogenic liquid evaporator includes housing with cryogenic liquid supplying assembly and cooling agent output assembly and heat exchange assembly made in the form of a tube bank, inter-tube space of which includes dump packing. In addition, heat exchange assembly is equipped with gas distributing grid located in lower part of tube bank and having the shape of flattened cone installed with smaller base upwards. Dump packing is located on gas distributing grid.
EFFECT: use of invention will allow more efficient use of thermal and physical properties of heat exchange assembly of cryogenic liquid evaporator owing to arrangement of dump packing with section having constant resistance, and creating conditions of uniform distribution and passing of warm gas vapours through the head piece.
SUBSTANCE: invention concerns refrigerating engineering. A heat exchanger (301) is designed to be connected to an evaporator (201) of a heat-transfer system wherein a working medium used is compressed and evaporated. The heat exchanger comprises a first tube (107) with its first end (303) shaped in such a way to be attached to an outlet fitting (204) of the evaporator and to transfer the medium from said outlet fitting, and the second tube (108) with its first shaped in such a way to be connected to the inlet fitting of the evaporator and to transfer the medium to said inlet fitting. The second tube is mounted inside of the first tube, or in thermal contact thereto, herewith ensuring the relations (109, 110) of the respective lengths of the first and second tubes to enable heat exchange between the mediums in these tubes. The first tube is made of the steel alloy consisting of ingredients reducing hardness of said steel alloy, thereby easing bend of the tube and enabling to bend the first tube in installation in the heat transfer system.
EFFECT: application of the invention allows reducing cost of the heat exchanger.
31 cl, 10 dwg