CN117663835A - Heat exchange device and heat exchange system - Google Patents

Abstract

The invention discloses a heat exchange device and a heat exchange system, wherein the heat exchange device comprises: the heat exchange cavity is arranged in the heat exchange cavity; the heat exchange tube layers are arranged in the heat exchange cavity and are mutually spaced along the upper and lower directions of the heat exchange cavity, and the plurality of heat exchange tube layers form a first heat exchange tube group and a second heat exchange tube group; a water inlet part connected with a liquid inlet of the heat exchange tube layer of the second heat exchange tube group; a water outlet part connected with a liquid outlet of the heat exchange tube layer of the first heat exchange tube group; and the collecting and separating cavity is positioned in the heat exchange cavity, a collecting and separating cavity is arranged in the collecting and separating cavity, the collecting and separating cavity is communicated with a liquid outlet of the heat exchange tube layer of the second heat exchange tube group, and is communicated with a liquid inlet of the heat exchange tube layer of the first heat exchange tube group. Among the above-mentioned heat transfer device, a plurality of heat exchange tube layers set up in the heat transfer intracavity along heat transfer chamber upper and lower direction, can guarantee the heat exchange efficiency between refrigerant and the heat exchange tube, can let heat flow density more concentrate under the cold volume with to have less area.

Description

Heat exchange device and heat exchange system

Technical Field

The invention relates to the technical field of heat exchange, in particular to a heat exchange device and a heat exchange system.

Background

The working principle of the falling film heat exchanger is that the tank body walks the refrigerant, the refrigerant sprays to the heat exchange tube below from the top distributor, and the water walks in the heat exchange tube. In the related art, the heat exchange tubes inside the falling film heat exchanger are all straight tubes, so that the heat exchanger is longer in length and larger in occupied area, and the movement of equipment is not facilitated.

Disclosure of Invention

The embodiment of the invention provides a heat exchange device and a heat exchange system.

A heat exchange device according to an embodiment of the present invention includes:

the heat exchange cavity is arranged in the heat exchange cavity;

the heat exchange tube layers are arranged in the heat exchange cavity and are mutually spaced along the upper and lower directions of the heat exchange cavity, and the plurality of heat exchange tube layers form a first heat exchange tube group and a second heat exchange tube group;

a water inlet part connected with a liquid inlet of the heat exchange tube layer of the second heat exchange tube group;

a water outlet part connected with a liquid outlet of the heat exchange tube layer of the first heat exchange tube group; and

the collection divides the cavity, is located the heat transfer intracavity, be equipped with the collection in the collection divides the cavity and divide the cavity, collection divides the cavity intercommunication the liquid outlet of heat transfer tube layer of second heat transfer tube group, intercommunication the inlet of heat transfer tube layer of first heat transfer tube group.

Among the above-mentioned heat transfer device, a plurality of heat exchange tube layers set up in the heat transfer intracavity along heat transfer chamber upper and lower direction, can guarantee the heat exchange efficiency between refrigerant and the heat exchange tube, can let heat flow density more concentrate under the cold volume with to have less area.

In certain embodiments, the heat exchange tube layer is disc-shaped.

In certain embodiments, the manifold cavity is located at an intermediate position within the heat exchange cavity, and the heat exchange tube layer surrounds the manifold cavity.

In some embodiments, a distribution cavity is arranged above the heat exchange cavity, a distribution cavity is arranged in the distribution cavity, a first through hole is formed in the bottom wall of the distribution cavity, the first through hole is communicated with the distribution cavity and the heat exchange cavity, and the distribution cavity is communicated with a liquid pipe.

In certain embodiments, the manifold chamber connects a bottom wall of the distribution chamber and a bottom wall of the heat exchange chamber.

In certain embodiments, the heat exchange device further comprises:

the gas-liquid separation cavity is arranged at the outer side of the heat exchange cavity, a gas-liquid separation cavity is arranged in the gas-liquid separation cavity, the gas-liquid separation cavity is separated from the heat exchange cavity through a baffle plate,

the partition plate is provided with a circulation channel, and the heat exchange cavity is communicated with the gas-liquid separation cavity through the circulation channel.

In some embodiments, an upper portion of the baffle is sealingly connected to a top wall of the heat exchange cavity.

In some embodiments, the lower portion of the partition plate has a stepped structure, and a plurality of openings are formed at edges of the stepped structure, and the openings constitute the flow channel.

In some embodiments, a gas-liquid separation plate is arranged in the gas-liquid separation cavity, the gas-liquid separation plate separates the gas-liquid separation cavity into a first cavity and a second cavity, the position of the gas-liquid separation plate is higher than that of the circulation channel, the gas-liquid separation plate is provided with a second through hole, the second through hole is communicated with the first cavity and the second cavity, and the heat exchange device further comprises an air pipe communicated with the first cavity.

In certain embodiments, the heat exchange device further comprises a liquid level sensor for detecting a liquid level in the heat exchange chamber, the liquid level being used as data for controlling the operation of the throttle valve.

A heat exchange system according to an embodiment of the present invention includes:

the heat exchange device according to any one of the above embodiments;

in the heat exchange system, the heat exchange tube layers are arranged in the heat exchange cavity along the vertical direction of the heat exchange cavity, so that the heat exchange efficiency between the refrigerant and the heat exchange tubes can be ensured, the heat flow density can be more concentrated under the same cooling capacity, and the heat exchange system has smaller occupied area.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic cross-sectional view of a heat exchange device according to an embodiment of the present invention;

FIG. 2 is a plan expanded view of a separator according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of piping connections of a heat exchange system according to an embodiment of the present invention;

fig. 4 is another schematic piping connection diagram of a heat exchange system according to an embodiment of the present invention.

Reference numerals:

100. a heat exchange device; 10. a heat exchange cavity; 11. supporting feet; 12. a heat exchange cavity; 13. a gas-liquid separation chamber; 14. a heat exchange tube; 15. a partition plate; 16. a gas-liquid separation chamber; 17. a heat exchange tube layer; 18. an opening; 19. a dispensing chamber; 20. a dispensing chamber; 21. a first through hole; 22. a collection and separation cavity; 23. a collection and separation cavity; 24. a first heat exchange tube group; 25. a second heat exchange tube group; 26. a water inlet part; 27. a water outlet part; 28. a first liquid inlet; 29. a first liquid outlet; 30. a second liquid inlet; 31. a second liquid outlet; 32. a liquid pipe; 33. a liquid level sensor; 34. a throttle valve; 36. a gas-liquid separation plate; 38. a second through hole; 39. a first chamber; 40. a second chamber; 42. an air pipe; 47. a pressure relief port; 48. a pressure release valve;

200. a heat exchange system; 52. a condenser; 54. a compressor; 56. a temperature sensor; 58. a cooling tower; 60. a first water pump; 62. a second water pump; 64. a user terminal; 66. and an oil return pipeline.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The disclosure herein provides many different embodiments or examples for implementing different structures of the invention. To simplify the present disclosure, components and arrangements of specific examples are described herein. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Referring to fig. 1, a heat exchange device 100 according to an embodiment of the present invention includes a heat exchange cavity 10, a plurality of heat exchange tube layers 17, a water inlet 26, a water outlet 27, and an integrated cavity 22. A heat exchange cavity 12 is arranged in the heat exchange cavity 10. The plurality of heat exchange tube layers 17 are provided in the heat exchange chamber 12 and are arranged at intervals in the up-down direction of the heat exchange chamber 10, and the plurality of heat exchange tube layers 17 constitute a first heat exchange tube group 24 and a second heat exchange tube group 25. The water inlet 26 is connected to the liquid inlet of the heat exchange tube layer 17 of the second heat exchange tube group 25. The water outlet portion 27 is connected to the liquid outlet of the heat exchange tube layer 17 of the first heat exchange tube group 24. The collecting and separating cavity 22 is positioned in the heat exchange cavity 12, a collecting and separating cavity 23 is arranged in the collecting and separating cavity 22, the collecting and separating cavity 23 is communicated with a liquid outlet of the heat exchange tube layer 17 of the second heat exchange tube group 25, and is communicated with a liquid inlet of the heat exchange tube layer 17 of the first heat exchange tube group 24.

In the heat exchange device 100, the heat exchange tube layers 17 are disposed in the heat exchange cavity 12 along the up-down direction of the heat exchange cavity 12, so that the heat exchange efficiency between the refrigerant and the heat exchange tube 14 can be ensured, the heat flow density can be more concentrated under the same cooling capacity, and the heat exchange device has a smaller occupied area.

Specifically, the heat exchange device 100 may include a falling film tank heat exchanger, where the working principle of the falling film tank heat exchanger is that the heat exchange cavity 10 passes a refrigerant, and the heat exchange tube 14 passes a medium to be heat exchanged, for example, the medium to be heat exchanged may be water, air, and the like. In the embodiment shown in fig. 1, the bottom surface of the heat exchange chamber 10 is also provided with support feet 11. The heat exchange tube layers 17 are disposed in the heat exchange chamber 12, the heat exchange tube layers 17 may be disposed at intervals from the top surface of the heat exchange chamber 12 to the bottom surface of the heat exchange chamber 12 along the up-down direction of the heat exchange chamber 12, the heat exchange tube layers 17 may be configured with a first heat exchange tube group 24 and a second heat exchange tube group 25, the first heat exchange tube group 24 is close to the top surface of the heat exchange chamber 12, the second heat exchange tube group 25 is disposed below the first heat exchange tube group 24, and T is denoted as the up-down direction of the heat exchange chamber 12.

The heat exchange device 100 further comprises a water inlet 26 and a water outlet 27, the water inlet 26 and the water outlet 27 can be arranged outside the heat exchange cavity 10, the water outlet 27 is close to the upper part of the heat exchange cavity 10, and the water inlet 26 is located below the water outlet 27. The liquid inlet of the heat exchange tube layer 17 of the first heat exchange tube group 24 may be a first liquid inlet 28, the liquid outlet of the heat exchange tube layer 17 of the first heat exchange tube group 24 may be a first liquid outlet 29, the liquid inlet of the heat exchange tube layer 17 of the second heat exchange tube group 25 may be a second liquid inlet 30, and the liquid outlet of the heat exchange tube layer 17 of the second heat exchange tube group 25 may be a second liquid outlet 31. The water inlet 26 may be connected to the second liquid inlet 30, and the water outlet 27 may be connected to the first liquid outlet 29. The collecting and separating cavity 22 is arranged in the heat exchange cavity 12, the collecting and separating cavity 23 is further arranged in the collecting and separating cavity 22, and the collecting and separating cavity 23 can be communicated with the second liquid outlet 31 and the first liquid inlet 28, so that the heat exchange efficiency between the refrigerant and the heat exchange tube 14 is ensured, the heat flow density can be more concentrated under the same cooling capacity, and the heat flow density has smaller occupied area.

In certain embodiments, the heat exchange tube layer 17 is disc-shaped. In this way, it is convenient for the plurality of heat exchange tube layers 17 to be arranged in the up-down direction of the heat exchange chamber 12.

Specifically, in one embodiment, all of the heat exchange tube layers 17 may be spirally wound to have a disc shape by one heat exchange tube 14 or a plurality of heat exchange tubes 14. In one embodiment, one heat exchange tube layer 17 may be coiled by one heat exchange tube 14 to have a disc shape.

In some embodiments, referring to fig. 1, the manifold chamber 22 is located at an intermediate position within the heat exchange chamber 12, and the heat exchange tube layer 17 surrounds the manifold chamber 22. Therefore, the structure is compact, the length of the heat exchange tube 14 in the heat exchange tube layer 17 is longer, and the heat exchange efficiency is improved.

Specifically, the collecting and separating cavity 22 can be arranged in the middle of the heat exchange cavity 12, the heat exchange tube layer 17 can be coiled and fixed on the collecting and separating cavity 22, the supporting collecting and separating cavity 22 can also have the minimum bending radius, the heat exchange tube layer 17 and the collecting and separating cavity 22 can be tightly connected, and the refrigerant is prevented from directly flowing to the bottom, so that the structure is compact, the length of the heat exchange tube 14 in the heat exchange tube layer 17 is longer, and the heat exchange efficiency is improved.

Please refer to fig. 1, p is denoted as the central axis of the manifold chamber 22, and K is denoted as the radial direction of the manifold chamber 22. The plurality of heat exchange tube layers 17 may be spirally wound around the central axis of the split-collecting chamber 22 outside the split-collecting chamber 22, and in addition, the plurality of heat exchange tube layers 17 may be circumferentially arranged at intervals in the radial direction of the split-collecting chamber 22. In the embodiment shown in fig. 1, two adjacent heat exchange tube layers 17 are spaced apart from each other, the spacing distance between two adjacent heat exchange tube layers 17 in the P direction is denoted by D1, and the spacing distance between the tubes of the same heat exchange tube layer 17 in the K direction is denoted by D2. After the heat exchange between the liquid refrigerant and the upper heat exchange tube layer 17 is completed, the liquid refrigerant which is not evaporated directly flows to the lower heat exchange tube layer 17 through the gap between the two heat exchange tube layers 17, and meanwhile, the gap is reserved between the pipelines of the heat exchange tube layer 17 on the same layer, so that the liquid refrigerant can flow downwards conveniently, the refrigerant is uniformly distributed, and the heat exchange efficiency of water in the heat exchange tube 14 can be further improved.

In some embodiments, a distribution cavity 19 is arranged above the heat exchange cavity 10, a distribution cavity 20 is arranged in the distribution cavity 19, a first through hole 21 is formed in the bottom wall of the distribution cavity 20, the first through hole 21 is communicated with the distribution cavity 20 and the heat exchange cavity 12, and the distribution cavity 20 is communicated with a liquid pipe 32. Thus, the liquid refrigerant can be helped to uniformly fall on the heat exchange tube 14, and the heat exchange efficiency between the liquid refrigerant and the heat exchange tube 14 is improved.

Specifically, in the embodiment shown in fig. 1, the distribution cavity 19 is located above the heat exchange cavity 10, the distribution cavity 19 is provided with a distribution cavity 20, a bottom wall of the distribution cavity 20 is provided with a first through hole 21, the liquid pipe 32 can be communicated with the distribution cavity 20, and the distribution cavity 20 can be communicated with the heat exchange cavity 12 through the first through hole 21, so that the liquid refrigerant can be facilitated to uniformly fall on the heat exchange tube 14, and the heat exchange efficiency between the liquid refrigerant and the heat exchange tube 14 is improved.

In certain embodiments, the manifold chamber 22 connects the bottom wall of the distribution chamber 20 and the bottom wall of the heat exchange chamber 12. In this way, the collecting and separating cavity 22 can play a role in supporting the heat exchange cavity 10 in addition to playing a role in collecting and separating the medium to be heat exchanged.

Specifically, referring to fig. 1, the upper end of the split-collecting cavity 22 is connected with the bottom wall of the distribution cavity 20, and the lower end of the split-collecting cavity 22 is connected with the bottom wall of the heat exchange cavity 12, so that the split-collecting cavity 22 and the distribution cavity 19 are fixedly connected, and the heat exchange cavity 10 can be supported.

In some embodiments, referring to fig. 1, the heat exchange device 100 further includes a gas-liquid separation cavity 13, the gas-liquid separation cavity 13 is disposed outside the heat exchange cavity 10, a gas-liquid separation cavity 16 is disposed in the gas-liquid separation cavity 13, the gas-liquid separation cavity 16 is separated from the heat exchange cavity 12 by a partition 15, the partition 15 is provided with a flow channel, and the heat exchange cavity 12 is communicated with the gas-liquid separation cavity 16 by the flow channel. Thus, the gas-liquid separation can be performed on the gaseous refrigerant.

Specifically, the gas-liquid separation cavity 13 may be disposed on the peripheral sidewall of the heat exchange cavity 10, the gas-liquid separation cavity 16 is disposed in the gas-liquid separation cavity 13, a partition 15 is disposed between the gas-liquid separation cavity 16 and the heat exchange cavity 12, a circulation channel is disposed on the partition 15, and the heat exchange cavity 12 and the gas-liquid separation cavity 16 may be communicated through the circulation channel, so as to perform gas-liquid separation on the gaseous refrigerant.

It should be noted that, the heat exchange tube 14 is coiled on the collecting and separating cavity 22 and is located in the heat exchange cavity 12, so that the flow cross-sectional area in the heat exchange cavity 12 is smaller, the flow rate of the gaseous refrigerant generated by evaporation in the heat exchange cavity 12 is faster, if the gaseous refrigerant directly returns to the compressor 54 at this time, the risk of hydraulic compression of the compressor 54 is increased, the compressor 54 is damaged, and the gas-liquid separation can be performed by arranging the gas-liquid separation cavity 16, so that the risk of liquid carrying is reduced.

In some embodiments, the upper portion of the partition 15 is sealingly connected to the top wall of the heat exchange chamber 10. Thus, the liquid refrigerant is prevented from being directly sucked into the gas-liquid separation chamber 16, so that the risk of liquid entrainment is avoided.

Specifically, in the embodiment shown in fig. 1, the upper portion of the partition 15 is sealingly connected to the top wall of the heat exchange chamber 10. When the liquid refrigerant enters the heat exchange cavity 12 from the distribution cavity 20, the upper part of the partition plate 15 is in sealing connection with the top wall of the heat exchange cavity 10, so that the air tightness of the area close to the top of the heat exchange cavity 12 can be ensured, and the liquid refrigerant can be prevented from being directly sucked into the gas-liquid separation cavity 16, so that the risk of liquid carrying is avoided.

In some embodiments, the lower portion of the partition 15 has a stepped structure, and a plurality of openings 18 are formed at the edge of the stepped structure, and the openings 18 constitute the flow passage. Thus, the gaseous refrigerant can pass through.

Specifically, referring to fig. 2, fig. 2 is a plan open view of the partition 15, the lower portion of the partition 15 is in a stepped structure with unequal proportions, a plurality of openings 18 may be formed at the edge of the stepped structure, the openings 18 may form a flow channel, and the flow channel is a channel for communicating the heat exchange chamber 12 with the gas-liquid separation chamber 16. It is understood that the stepped structure may be a stepped structure having a level lower than a level of the level.

In the illustrated embodiment, the stepped structure is gradually reduced from top to bottom into the middle position of the partition plate 15, so that the area of the opening 18 is increased from top to bottom, so that the requirement that the gaseous refrigerant in the heat exchange cavity 12 enters the gas-liquid separation cavity 16 can be met, specifically, when the liquid refrigerant is sprayed onto the heat exchange tube 14 from above, less gaseous refrigerant is generated, and the gaseous refrigerant can enter the gas-liquid separation cavity 16 from the smaller opening 18. With continuous heat exchange, the bottom heat exchange tube 14 also participates in heat exchange, more gaseous refrigerant is generated, and the gaseous refrigerant can enter the gas-liquid separation cavity 16 from the opening 18 with a larger lower part, thereby being beneficial to gas-liquid separation.

In some embodiments, a gas-liquid separation plate 36 is disposed in the gas-liquid separation chamber 16, the gas-liquid separation plate 36 separates the gas-liquid separation chamber 16 into a first chamber 39 and a second chamber 40, the gas-liquid separation plate 36 is located higher than the position of the flow channel, the gas-liquid separation plate 36 is provided with a second through hole 38, the second through hole 38 is communicated with the first chamber 39 and the second chamber 40, and the heat exchange device 100 further includes an air pipe 42 communicated with the first chamber 39. Therefore, the secondary gas-liquid separation can be carried out on the gaseous refrigerant, and the occurrence of the condition of liquid carrying during air suction is further prevented.

Specifically, in the embodiment shown in fig. 1, the gas-liquid separation plate 36 is disposed at a position near the top of the gas-liquid separation chamber 16, the gas-liquid separation chamber 16 is separated by the gas-liquid separation plate 36 into a first chamber 39 and a second chamber 40, the first chamber 39 is located above the second chamber 40, the gas-liquid separation plate 36 is located at a position higher than the through hole space, and a plurality of second through holes 38 are formed in the gas-liquid separation plate 36, the first chamber 39 can be communicated with the second chamber 40 through the second through holes 38, and then the gaseous refrigerant in the second chamber 40 is further separated into the first chamber 39, so that the gaseous refrigerant can be subjected to secondary gas-liquid separation, and the occurrence of the condition of liquid entrainment is prevented. An air pipe 42 is installed at one side of the first cavity 39, the air pipe 42 is close to the top of the first cavity 39 and is located above the gas-liquid separation plate 36, the air pipe 42 is communicated with the first cavity 39, and the gaseous refrigerant subjected to secondary gas-liquid separation can return to the compressor 54 through the air pipe 42.

In addition, the heat exchange device 100 further includes a pressure release valve 48, the pressure release valve 48 being disposed between the air pipe 42 and the gas-liquid separation plate 36, the pressure release valve 48 being in communication with the first chamber 39. Relief valve 48 may include a relief vent 47. Relief valve 48 may be preset with a first threshold value and a second threshold value, and the first threshold value may be less than or equal to the second threshold value. When the air pressure in the first chamber 39 is smaller than the first threshold value, the pressure relief valve 48 closes the pressure relief port 47, and the gaseous refrigerant can be discharged from the air pipe 42. When the air pressure value in the first cavity 39 is greater than the second threshold value, the pressure release valve 48 is communicated with the pressure release opening 47, and the gaseous refrigerant can be discharged from the air pipe 42 and the pressure release opening 47, so that the heat exchange device 100 can be ensured to work normally.

In certain embodiments, the heat exchange device 100 further comprises a level sensor 33, the level sensor 33 being configured to detect a level of liquid within the heat exchange chamber 12, the level of liquid being configured to be used as data for controlling the operation of the throttle valve 34. Therefore, the heat exchange effect of the full falling film can be achieved, and the spraying amount of liquid refrigerant is reduced.

Specifically, referring to fig. 1 and 3, the heat exchange device 100 is further provided with a throttle valve 34, the throttle valve 34 includes an electronic expansion valve, and the liquid level sensor 33 may be disposed at the bottom of the heat exchange cavity 12. The liquid level sensor 33 is used for detecting the liquid level in the heat exchange cavity 12, and the total amount of liquid refrigerant sprayed by the liquid pipe 32 can be adjusted in a linkage way through the liquid level sensor 33 and the electronic expansion valve, so that the heat exchange effect of the full falling film can be achieved, and the spraying amount of the liquid refrigerant is reduced. It will be appreciated that the location of the liquid level sensor 33 is not limited, and may be located within the heat exchange chamber 12, within the second chamber 40, in a middle position of the heat exchange chamber 12, or in other positions of the heat exchange chamber 12. When the liquid level sensor 33 is installed at different positions, the liquid level height of the trigger linkage can be calibrated at the corresponding positions.

Referring to fig. 1, 3 and 4, a heat exchange system 200 according to an embodiment of the present invention includes the heat exchange device 100 according to any one of the above embodiments.

In the heat exchange system 200, the heat exchange tube layers 17 are disposed in the heat exchange chamber 12 along the up-down direction of the heat exchange chamber 12, so that the heat exchange efficiency between the refrigerant and the heat exchange tube 14 can be ensured, the heat flow density can be more concentrated under the same cooling capacity, and the heat exchange system has a smaller occupied area.

Specifically, the liquid level at the bottom of the heat exchange cavity 12 can be controlled to be at a certain height through the linkage of the liquid level sensor 33 and the electronic expansion valve, and an oil return port (not shown) is arranged on the side wall of the heat exchange cavity 10 for a lubricating oil system, so that oil in the heat exchange device 100 returns to the compressor 54 in an injection oil return mode, and the operation safety of the compressor 54 is ensured.

In the heat exchange system 200 with oil return requirement, referring to fig. 3, the compressor 54 is used to raise the low-temperature low-pressure gas entering the compressor 54 from the inlet of the compressor 54 to high-temperature high-pressure gas and discharge the gas from the outlet of the compressor 54. The temperature sensor 56 can detect the temperature of the gaseous refrigerant at the inlet and outlet of the compressor 54, so as to ensure the normal operation of the compressor 54. The low-temperature low-pressure gaseous refrigerant is compressed by the compressor 54, is converted into high-temperature high-pressure gaseous refrigerant, flows to the condenser 52 from the outlet of the compressor 54, releases heat in the condenser 52, is converted into liquid refrigerant, the heat released by the refrigerant in the condenser 52 is absorbed by normal-temperature water, the water is pumped into the cooling tower 58 for heat release after absorbing the heat, and the water is pumped into the condenser 52 again by the first water pump 60 for heat exchange after being cooled, so that the low-temperature high-pressure liquid refrigerant is obtained. The low-temperature and high-pressure liquid refrigerant is throttled into a low-temperature and low-pressure liquid refrigerant by the electronic expansion valve, and the low-temperature and low-pressure liquid refrigerant finally enters the heat exchange cavity 12 to exchange heat with the heat exchange tube 14, and the low-temperature cold water generated after heat exchange can be supplied to the user terminal 64 by the water pump. The user terminal 64 may be a wind turbine or other devices. In some embodiments, the second water pump 62 may pump water into the heat exchange device 100 to exchange heat with the liquid refrigerant, and the second water pump 62 may pump water after exchanging heat with the liquid refrigerant out of the heat exchange device 100 for the user terminal 64. In some embodiments, heat exchange system 200 further includes an oil return line 66 through which lubricating oil within heat exchange device 100 is returned to compressor 54 using an ejector return.

The lubricant oil in the compressor 54 is mixed with the refrigerant and discharged from the outlet of the compressor 54, becomes high-temperature and high-pressure liquid lubricant oil, releases heat in the condenser 52, throttles into low-temperature and low-pressure liquid lubricant oil by the electronic expansion valve, and finally enters the heat exchange device 100 together with the low-temperature and low-pressure liquid refrigerant. In the heat exchange device 100, the liquid refrigerant is changed into a gaseous refrigerant after heat exchange, the gaseous refrigerant returns to the compressor 54 through the air pipe 42, and the liquid lubricating oil is accumulated in the heat exchange device 100 and returns to the compressor 54 through the oil return pipe 66.

In the heat exchange system 200 without oil return requirement, referring to fig. 4, the compressor 54 is used to raise the low temperature and low pressure gas entering the compressor 54 from the inlet of the compressor 54 to high temperature and high pressure gas and discharge from the outlet of the compressor 54. The temperature sensor 56 can detect the temperature of the gaseous refrigerant at the inlet and outlet of the compressor 54, so as to ensure the normal operation of the compressor. The low-temperature low-pressure gaseous refrigerant is compressed by the compressor 54, is converted into high-temperature high-pressure gaseous refrigerant, flows to the condenser 52 from the outlet of the compressor 54, releases heat in the condenser 52, is converted into liquid refrigerant, the heat released by the refrigerant in the condenser 52 is absorbed by normal-temperature water, the water is pumped into the cooling tower 58 for heat release by the first water pump 60 after absorbing the heat, and the water is pumped into the condenser 52 again by the first water pump 60 for heat exchange after being cooled, so that the low-temperature high-pressure liquid refrigerant is obtained. The low-temperature and high-pressure liquid refrigerant is throttled into a low-temperature and low-pressure liquid refrigerant by the electronic expansion valve, and the low-temperature and low-pressure liquid refrigerant finally enters the heat exchange cavity 12 to exchange heat with the heat exchange tube 14, and the low-temperature cold water generated after heat exchange can be supplied to the user terminal 64 by the water pump. In some embodiments, the second water pump 62 may pump water into the heat exchange device 100 to exchange heat with the liquid refrigerant, and the second water pump 62 may pump water after exchanging heat with the liquid refrigerant out of the heat exchange device 100 for the user terminal 64.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (11)

1. A heat exchange device, comprising:

the heat exchange cavity is arranged in the heat exchange cavity;

the heat exchange tube layers are arranged in the heat exchange cavity and are mutually spaced along the upper and lower directions of the heat exchange cavity, and the plurality of heat exchange tube layers form a first heat exchange tube group and a second heat exchange tube group;

a water inlet part connected with a liquid inlet of the heat exchange tube layer of the second heat exchange tube group;

a water outlet part connected with a liquid outlet of the heat exchange tube layer of the first heat exchange tube group; and

the collection divides the cavity, is located the heat transfer intracavity, be equipped with the collection in the collection divides the cavity and divide the cavity, collection divides the cavity intercommunication the liquid outlet of heat transfer tube layer of second heat transfer tube group, intercommunication the inlet of heat transfer tube layer of first heat transfer tube group.

2. The heat exchange device of claim 1 wherein the heat exchange tube layer is disc-shaped.

3. The heat exchange device of claim 1 wherein the manifold cavity is located intermediate the heat exchange cavities and the heat exchange tube layer surrounds the manifold cavity.

4. The heat exchange device of claim 1, wherein a distribution cavity is arranged above the heat exchange cavity, a distribution cavity is arranged in the distribution cavity, a first through hole is formed in the bottom wall of the distribution cavity, the first through hole is communicated with the distribution cavity and the heat exchange cavity, and the distribution cavity is communicated with a liquid pipe.

5. The heat exchange device of claim 4 wherein the manifold chamber connects a bottom wall of the distribution chamber and a bottom wall of the heat exchange chamber.

6. The heat exchange device of claim 1, further comprising:

the gas-liquid separation cavity is arranged at the outer side of the heat exchange cavity, a gas-liquid separation cavity is arranged in the gas-liquid separation cavity, the gas-liquid separation cavity is separated from the heat exchange cavity through a baffle plate,

the partition plate is provided with a circulation channel, and the heat exchange cavity is communicated with the gas-liquid separation cavity through the circulation channel.

7. The heat exchange device of claim 6 wherein the upper portion of the baffle is sealingly connected to the top wall of the heat exchange cavity.

8. The heat exchange device of claim 6, wherein the lower portion of the partition plate has a stepped structure, and a plurality of openings are formed at edges of the stepped structure, the openings constituting the flow passage.

9. The heat exchange device according to claim 6, wherein a gas-liquid separation plate is provided in the gas-liquid separation chamber, the gas-liquid separation plate separates the gas-liquid separation chamber into a first chamber and a second chamber, the position of the gas-liquid separation plate is higher than the position of the flow passage, the gas-liquid separation plate is provided with a second through hole, the second through hole communicates with the first chamber and the second chamber, and the heat exchange device further comprises a gas pipe communicating with the first chamber.

10. The heat exchange device of claim 1, further comprising a liquid level sensor for detecting a liquid level in the heat exchange chamber, the liquid level being used as data for controlling the operation of the throttle valve.

11. A heat exchange system, comprising:

a heat exchange device according to any one of claims 1 to 10.