The evaporator-condenser of the heat pump

 

(57) Abstract:

The invention relates to heat pump installation. The condenser-evaporator has a first and second curved and almost congruent tubular collectors. One of the collectors is the upper manifold and the second lower manifold. The first row of elongated tube slots located in the upper reservoir, and a second series of elongated tubular grooves located in the lower manifold. Each pipe groove in the first row corresponds to the pipe groove in the second row, and the corresponding pipe grooves in said series of aligned relative to each other. The collectors are connected straight smooth parallel pipes with an elongated cross-section. In one of the headers is the first passage for the refrigerant, and the second of the collectors is a second passage for the refrigerant. The use of the invention will improve the drainage of the condensate in the condenser-evaporator with maintaining a compact size. 4 C. and 11 C.p. f-crystals, 3 ill.

Scope

The presented invention relates to heat exchangers and, more specifically, heat exchanger, which can serve as an external coil and to function as an evaporator and as a condenser of, and for cooling increases. Such systems are best suited for use when not in a very cold climate and are even used in such climatic conditions, when you use some other backup heating system. As is well known, heat pumps consist of an inner heat exchanger located inside a building, which is regulated by temperature and external heat exchanger located outside of the building. Depending on, does the system operation cooling or heating, one heat exchanger used as an evaporator and the other as a condenser, and Vice versa.

When located outside the heat exchanger acts as an evaporator, its surface is usually formed by condensation. Should be provided with special means to ensure the rapid removal of condensate from the surfaces of the heat exchanger, otherwise it will decrease its effectiveness due to the fact that the surrounding air will transfer heat to the layer of condensate, sometimes representing a layer of ice, instead of directly to the surface of the heat exchanger.

Recent progress in the design of heat exchangers has led to the emergence of a whole is Ktorov separate tanks are often used tubular blocks reservoirs-reservoirs. On the other hand, can also be used in multilayer blocks reservoirs-reservoirs. Located opposite each other collectors are connected to a certain number of pipes, which typically have a smooth surface and between which is placed the plate.

Despite the fact that such heat exchangers when used as evaporators in many ways superior to their prototypes, the drainage of condensate formed on pipes and plates, is an important problem.

In addition, since the refrigerant used in such systems, will flow across multiple hydraulically parallel paths at the same time, to avoid loss of efficiency in some way must be provided for uniform distribution of the refrigerant in these ways, especially when the heat exchanger operates as an evaporator.

This invention is intended to overcome some of the above problems.

The essential features of the invention

The main object of the invention is to provide a new and improved heat exchanger. In more detail, the object of the invention is to provide a new and improved condenser-evaporator for use in a heat pump is Sator-evaporator, includes two curved, almost congruent tubular manifold. One of them is the upper manifold and the other is located exactly under this first and is the lower manifold. In the top header is the first row of elongated slots. The grooves are opened down to the lower manifold. In the lower reservoir is formed, a second series of elongated grooves. The slots are opened up to the upper reservoir. Each groove in the first row corresponds to the groove in the second row, and the corresponding slots in the rows are aligned with each other. The collectors are connected to spaced parallel straight smooth pipe having elongated cross-section. Pipes inserted opposite ends in corresponding slots of the first and second rows. Collectors provided by the first and second passageways for the refrigerant.

Through the use of direct vertically placed pipe having elongated cross-section, achieved an excellent flow of condensate. In addition, due to the production manifold with at least one bend is achieved compactness.

In its best embodiment, the invention further includes first and second flow restrictors, respectively, in first is lectora, although collectors are connected transition pipe, one end of which is located in the first reservoir opposite from the first passage for the refrigerant side of the first flow limiter and a second end positioned in the second reservoir opposite from the second passage for the refrigerant side of the second flow limiter.

In one embodiment, one or more flow restrictors are a partition. In another embodiment, at least one of the flow restrictors is a one-way valve.

Other objects and improvements will become apparent from the following description, accompanied by drawings.

Description of drawings

Fig. 1 is a three-dimensional image of one embodiment of the condenser-evaporator, made in accordance with the invention;

Fig. 2 is a schematic vertical section of a modified version of the condenser-evaporator;

Fig. 3 is a schematic view of another embodiment of a condenser-evaporator, which uses valves (shown in the enlarged view).

Description the best variant of the invention

Exemplary embodiments of condensers-evaporators are illustrated by black is goodbye options will be specially considered.

Please refer to Fig. 1. The first block of the reservoir the reservoir generally indicated by the numeral 10 and is formed from a pipe 12, curved in the shape of the letter U. the Bottom section of the tank-reservoir generally indicated by the numeral 14 and consists of the same pipe 16, is also curved in the shape of the letter U. it is Desirable that the pipes 12 and 16 were almost congruent in the geometric sense and aligned relative to each other so that the first collector 10 was the top of the collector, and the collector 14 was located exactly under this first and was lower manifold.

In the upper reservoir 10 is the number of elongated tubular grooves 18, drop down to the lower reservoir 14. In the lower reservoir 14 is also located a number of elongated tubular grooves 20 that opens up to the upper reservoir 10. Each groove of the number 18 in the upper reservoir 10 corresponds to the groove of the number 20 in the lower manifold 14, and the slots in the rows 18 and 20 are aligned with each other. The upper ends 24 of smooth pipe 22 with an elongated cross-section is inserted in the pipe grooves 18 and firmly fixed in them by means of, for example, soldering. The opposite ends 26 of smooth pipe 22 is inserted in the pipe grooves 20 and firmly fixed in them, too, by soldering. Thus, the pipe 22 Rapido adjacent tubes 22 and solder them to the walls of the curved plate 30 (only one of which is shown in Fig. 1).

At one end of the collector 10 is the passage 32. The opposite end sealed by a plug 34.

At one end of the manifold 14 is the passage 36. The plug 38 is the same as 34, closes its opposite end.

It was found that when the above-described heat exchanger functions as an evaporator in the system with heat exchanger, the efficiency is improved if the refrigerant that you want to vaporize, in the two-phase stream is fed to the lower reservoir 14. This is done to improve the distribution of refrigerant and increase the uniformity of flow through the pipe 22. Thus, the passage 36 will be used as the inlet during operation of evaporation and how the hole during the operation of the condensation. Similarly, the passage 32 will be used as the hole during the operation of evaporation as the entrance hole during the operation of condensation.

In the usual case, the heat exchanger shown in Fig. 1, is formed in the same plane using standard methods. Curves 40 and 42 in the upper header 10 and 44, 46 in the lower reservoir 14 can be formed of separate parts by adhesions using the discharge of oborudovanie this patent can be found using the specified reference.

This helps to give the condenser-evaporator any form at will from almost rectangular rigid form (as shown in Fig. 1) to almost completely circular shape (not shown). Thus, the external dimensions of the heat exchanger, is part of the condenser-evaporator, can be made very compact.

Even more important is that the location of the collectors 10 and 14 with a vertical smooth tube 22 with an elongated cross section allows you to achieve this compactness, leaving the orientation of the tubes 22 vertical that provides excellent drainage of condensate when the condenser-evaporator functions as an evaporator. Thus, due to the special use of curved upper and lower reservoir provides excellent drainage of condensate, while remains a very desirable feature compact designs.

Fig. 2 illustrates a modified condenser-evaporator. Another modification shown in Fig.3 and, since both figures the condenser-evaporator is shown in flat form, it should be noted that the best options condensers-evaporators shown in Fig.2 and 3, have the same curved collony in Fig. 2, and the same parts will correspond to the same numeric references.

Illustrated Fig. option 2 is a multi-pass option, specifically two-way. For any heat exchanger having the configuration described here, multiple passes increase the speed of the refrigerant flowing through the heat exchanger. As is known, increasing the speed increases the intensity of heat transfer. Thus, multiple passes allow you to choose the optimal flow rate to achieve the best efficiency. To provide a multi-pass configuration shown in Fig. option 2 provided with a limiter 50 stream representing a partition. The partition 50 is soldered inside the tube 16 forming the lower manifold. Exactly the same partition 52 is soldered inside the tube 12 forming the upper header 10.

Opposite the passage 36 of the side walls 50 has a hole 60 in the inside bottom of the collector 14. The same hole 62 is located in the upper header 10 and is placed opposite to the passage 32 of the side walls 52. Transition pipe 64 having approximately the same internal diameter as the pipe 12, 16, and much more, NT evaporator-condenser, is depicted in Fig. 2, comes from the passage 32 through the upper part of the collector 10, which is located to the left of the partition 52, and then through a smooth pipe 22 with an elongated cross-section goes to the part of the lower manifold 14, which is located to the left of the septum 50. From there the fluid flow through the adapter tube 64 passes back into the upper reservoir 10, in the part thereof which is located to the right of the septum 52. Further, through the pipe 22, the flow returns to the lower part of the collector 14, which is located to the right of the septum 50. Hence, the flow goes to passage 36.

When the heat exchanger acts as a condenser, the traffic flow does not provide any special benefits, but this scheme provides a significant advantage when the heat exchanger as an evaporator in the heat pump system.

Recall that during the discussion of the variant shown in Fig. 1, it was stated that the increase in efficiency is achieved by a more uniform distribution of the evaporated refrigerant, which in turn can be achieved by the introduction of the first refrigerant in the lower reservoir 14. Therefore, when the heat exchanger operates as an evaporator, the passage 36 again can be used as input re the e of the refrigerant in the right relative to the partition 50 of the lower manifold and when the traffic flow through the pipes 22 in the upper reservoir 10 will be achieved with good efficiency evaporation. Accumulated in the upper reservoir 10, the refrigerant is partially still in liquid form, will return for transition pipe 64 into the lower manifold, and again will flow up through the pipe 22 to the left of the septum 50. And again, as before the second pass through the heat exchanger, the refrigerant is at the bottom of the reservoir 14, achieves a more uniform distribution and, therefore, more efficient cycle of evaporation. Thus, the invention is illustrated in Fig. 2, ensures uniform distribution of the refrigerant during the operation of evaporation in a multi-way circuit by means of the transition pipe 64, which before the second passage returns the refrigerant to the lower manifold. Of course when you want to arrange more than two passes may be used for additional transitional tubes, one for each additional pass. This ensures that a more uniform distribution of the refrigerant is achieved by placing it in the bottom of the reservoir occurs at each iteration.

Fig. 3 illustrates another variant of the invention, which also provides the advantage of a more uniform distribution of the refrigerant during the operation of evaporation, which is before the same parts will correspond to the same numeric references. In the form shown in Fig. 3 embodiment, the cover 38 is replaced by an additional passage 70. Further, the partition wall 52 is replaced by a one-way valve 72 installed inside the pipe 12 of the upper manifold near the hole 62 from the side of the passage 32. It should be noted that the one-way valve 72 shown in Fig. 3 in an enlarged size.

One-way valve is oriented so that the flow can pass only from the left relative to the valve 72 of the upper part of the collector 10 in the right part of the upper reservoir 10, but not Vice versa.

The same one-way valve 74 is located within the transition tube 64 near its connection with the lower reservoir 14. One-way valve 74 allows the flow within the transition tube 64 to be down.

In the variant shown in Fig. 3, the passage 32 serves only as an outlet opening during operation of the evaporation and any other functions will not perform. At the same time, the passage 36 still serves as an inlet opening during the operation of evaporation and how the hole during the operation of the condensation. Additional passage 70 is used only as an input hole and only during the operation kandasamy in Fig. 2, because the one-way valve 74 will allow the flow of refrigerant to pass from the upper reservoir 10 into the lower reservoir 14 through the adapter tube 64. At the same time, one-way valve 72 will prevent flow from the right side of the manifold 10 directly to the passage 32, which serves as the outlet.

On the other hand, when the variant of Fig. 3 acts as a condenser, the refrigerant that will condense, is fed through the inlet 70 and flows through pipe 22 to the left side of the upper header 10. From there it will pass through a one-way valve 72 to the right of the top of the collector 10 will flow down through the pipe 22 and ultimately get into the passage 36, which in this case serves as the outlet. Transition pipe 64 may not be a workaround, because the one-way valve 74 prevents the flow of refrigerant within the transition tube 64 upwards.

Therefore, you can specify that the heat exchangers intended for use as condensers-evaporators in heat pump systems and created in accordance with the invention have several advantages. First, they can be quite compactly configured, in order to ensure excellent drainage of condensate, when the heat exchangers operate as evaporators. Moreover, the use of transition pipes 64 and of flow restrictors or in the form of walls 50 and 52, either in the form of one-way valves 72 and 74 provides for the possibility of multiple passages, allowing you to achieve optimum flow rates. At the same time results in an even distribution of the refrigerant when the heat exchanger operates as an evaporator, which allows to maximize the efficiency of the cycle evaporation. This is achieved by the original structure of the device, which ensures that the refrigerant always falls into the lower reservoir before each pass during the operation of evaporation.

In conclusion, that although the invention was described in the context of the heat exchanger, which can be used as an evaporator and as a condenser, it seems obvious that the invention can effectively be used in the heat exchanger, is intended solely as an evaporator.

1. The heat exchanger is designed, at least in part, for use as an evaporator, comprising: an upper unit of a reservoir manifold having a number of Windows that down pipe grooves; the bottom section of the tank-collect the second row the opening up of the pipe grooves; pipe grooves in said upper portion of the tank-manifold properly aligned with the corresponding pipe grooves in said bottom section of the tank-collector; blocks reservoirs-reservoirs are connected vertically spaced pipes with an elongated cross-section, inserted with their ends in the respective above-mentioned grooves and tightly fixed in the corresponding block of the reservoir the reservoir; a first passage in said bottom section of the tank-reservoir, adapted to serve as an inlet during operation of the evaporation and the outlet during operation of the condensing; a second passage in said upper portion of the tank-reservoir, located on the opposite side of the mentioned upper block of the reservoir the reservoir relative to the first mentioned passage and at least adapted to serve as the outlet during operation of evaporation; the transition tube having a substantially larger inner diameter of the passage as compared with the said pipe with an elongated cross-section, placed between the said first and second passages connected with said lower block tank-collector in the first location, located on rasstayuschayasya, located at some distance from both of the above passages; means, including a first flow limiter in the above-mentioned bottom section of the tank-reservoir to prevent flow of fluid on the said lower block tank collector of said first mentioned passage to the first location mentioned transition pipe; and means, including a second flow limiter in the above-mentioned upper portion of the tank-reservoir, located between the said second passage and said second position to prevent flow on the said upper block tank collector of said second location of the said second passage; as a result, in the operation of the evaporation of the volatile liquid will flow in the above-mentioned lower block tank-manifold, then part of the said pipe with an elongated cross-section, then through the mentioned upper reservoir the reservoir to the said second location and then will be returned in the above-mentioned lower block of the reservoir the reservoir through the mentioned transition pipe to leak from the mentioned lower unit reservoir the reservoir through the remaining part by mentioning the aisle, whereby is achieved a more uniform distribution of the aforementioned liquid and efficient operation of evaporation.

2. The heat exchanger under item 1, in which at least one of the flow restrictors is a partition.

3. The heat exchanger under item 1, in which at least one of the flow restrictors is a one-way valve.

4. The heat exchanger under item 1, in which one of the flow restrictors is a partition, and another mentioned of flow restrictors is a one-way valve.

5. The heat exchanger under item 1, in which the aforementioned first flow limiter is a partition, and the second flow limiter is a one-way valve.

6. The heat exchanger under item 5, which also includes another one-way valve located in said transition tube in such a way as to allow the flow to move from the second location to the first mentioned location, but not Vice versa.

7. Heat exchanger according to p. 6, specially adapted for use in a heat pump system in such a way as to perform operas as the unit of tank-collector in the opposite of said first pass side on the said partitions, and the specified third passage adapted to serve as an inlet for fluid in the operation of condensation.

8. The heat exchanger under item 1, in which the mentioned second flow limiter is a partition.

9. The heat exchanger under item 8, which referred to the first flow limiter is a partition.

10. The heat exchanger under item 1, in which both the above-mentioned flow limiter are partitions.

11. The heat exchanger under item 1, in which the said pipe with an elongated cross-section are direct, and the aforementioned blocks reservoirs-reservoirs curved and almost congruent to each other.

12. A heat exchanger comprising: first and second curved and almost congruent tubular headers; one of these collectors is the upper manifold; the second of these collectors is located below and at some distance from the upper manifold aligned with the said top header and a bottom header; a first series of elongated tubular grooves located in said upper manifold and opens downward in the direction referred to the lower reservoir; a second row of elongated trubridge collector; each pipe groove in said first row corresponds to the pipe groove in said second row; the corresponding pipe grooves in the above-mentioned series of aligned relative to each other; the collectors are connected straight smooth parallel pipes with an elongated cross section; each of these pipes is inserted with its first end into the corresponding groove in said first row; each of these pipes is inserted with its opposite end in a corresponding groove in said second row; the first passage for the refrigerant in one of said headers; and a second passage for the refrigerant in one of said collectors.

13. Heat exchanger according to p. 12 also includes first and second flow restrictors in said first and second collectors, respectively, and first mentioned passage is located in said first reservoir, and the second passage is located in said second manifold and the adapter pipe connecting the said reservoir from a location opposite from the first mentioned passage of the said first flow limiter on said first manifold to a location on said second collector p is 14. A heat exchanger, comprising: an upper unit of a reservoir manifold having a number of Windows that down pipe grooves; the bottom section of the tank is a reservoir located below and at some distance from the upper block of the reservoir the reservoir and having a number of Windows that up pipe grooves; pipe grooves in said upper portion of the tank-manifold properly aligned with the corresponding pipe grooves in said bottom section of the tank-collector; blocks reservoirs-reservoirs are connected vertically spaced pipes with an elongated cross-section, inserted with their ends in the respective above-mentioned grooves and tightly fixed in the corresponding block of the reservoir the reservoir; the first passage in said bottom section of the tank-reservoir, adapted to serve as an inlet during operation of the evaporation and the outlet during operation of the condensing; a second passage in said upper portion of the tank-reservoir, located on the opposite side of the mentioned upper block of the reservoir the reservoir relative to the first mentioned passage and at least adapted to serve as the outlet during operation of the evaporation; transitional pipe, and shall eat placed between the said first and second passages connected with said lower block tank-collector in the first location, located at some distance from both of the above passages, and connected with the said upper block tank-collector in the second location, located at some distance from both of the above passages; the first partition in said bottom section of the reservoir the reservoir to prevent flow of fluid on the said lower block tank collector of said first mentioned passage to the first location mentioned transition pipe; and means, including a second flow limiter in the above-mentioned upper portion of the tank-reservoir, located between the said second passage and said second position to prevent flow on the said upper block tank collector of said second location of the said second passage; as a result, during operation of the evaporation of the volatile liquid will flow in the above-mentioned lower block tank-manifold, then part of the said pipe with an elongated cross-section, then through said verrigni block reservoir the reservoir through the mentioned transition pipe, to proceed from the mentioned lower unit reservoir the reservoir through the remaining part of these pipes with an elongated cross-section in said upper reservoir the reservoir and then referred to the second passage, whereby is achieved a more uniform distribution of the aforementioned liquid and efficient operation of evaporation.

15. A heat exchanger, comprising: an upper unit of a reservoir manifold having a number of Windows that down pipe grooves; the bottom section of the tank is a reservoir located below and at some distance from the upper block of the reservoir the reservoir and having a number of Windows that up pipe grooves; pipe grooves in said upper portion of the tank-manifold properly aligned with the corresponding pipe grooves in said bottom section of the tank-collector; blocks reservoirs-reservoirs are connected vertically spaced pipes with an elongated cross-section, inserted with their ends in the respective above-mentioned grooves and tightly fixed in the corresponding block of the reservoir the reservoir; the first passage in said bottom section of the tank-reservoir, adapted to serve as an inlet during operation of the evaporation is a-manifold located on the opposite side of the mentioned upper block of the reservoir the reservoir relative to the first mentioned passage and at least adapted to serve as the outlet during operation of evaporation; the transition tube having a substantially larger inner diameter of the passage as compared with the said pipe with an elongated cross-section, placed between the said first and second passages connected with said lower block tank-collector in the first location, located at some distance from both of the above passages, and connected with the said upper block tank-collector in the second location, located at some distance from both of the above passages; a partition in said bottom section of the tank-reservoir to prevent flow of fluid on the said lower block tank collector of said first mentioned passage to the first location mentioned transition pipe; means including a first one-way valve in said upper portion of the tank-reservoir, located between the said second passage and said second location to prevent the Oia of the said second passage; and the second one-way valve in said transition tube is installed so that the flowing stream from the second location to the first mentioned location, but not Vice versa; as a result, during operation of the evaporation of the volatile liquid will flow in the above-mentioned lower block tank-manifold, then part of the said pipe with an elongated cross-section, then through the mentioned upper reservoir the reservoir to the said second location and then will be returned in the above-mentioned lower block of the reservoir the reservoir through the mentioned transition pipe, to proceed from the mentioned lower unit reservoir the reservoir through the remaining part of these pipes with an elongated cross-section in said upper reservoir the reservoir and then referred to the second passage, whereby is achieved a more uniform distribution of the aforementioned liquid and efficient operation of evaporation.

 

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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

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