CN117073418A - Heat exchange assembly and compressor with same - Google Patents

Abstract

The application provides a heat exchange assembly and a compressor with the same, wherein the heat exchange assembly comprises: the heat exchange tube is provided with a first channel, a second channel, an air inlet channel and a heat exchange channel, wherein the first channel is communicated with an air suction part of the compressor, the second channel is communicated with an air discharge part of the compressor, at least part of the air inlet channel is arranged between the first channel and the second channel, an air inlet end of the air inlet channel is communicated with the air suction part of the compressor, an air outlet end of the air inlet channel is communicated with the heat exchange channel, a heat exchange outlet of the heat exchange channel is communicated with the air suction part of the compressor, and a heat exchange tube wall is arranged between the heat exchange channel and the second channel; the reversing valve is provided with a valve port and is arranged in the first channel, the second channel and the air inlet channel so as to enable the reversing valve to move to an opening position for enabling the valve port to be communicated with the air inlet channel or a blocking position for enabling the valve port to avoid the air inlet channel under the action of pressure difference. By adopting the technical scheme of the application, the technical problem of liquid carrying of the refrigerant at the suction side of the compressor in the prior art can be solved.

Description

Heat exchange assembly and compressor with same

Technical Field

The application relates to the technical field of compressors, in particular to a heat exchange assembly and a compressor with the same.

Background

Currently, a compressor is generally disposed in a refrigeration apparatus to compress and drive a refrigerant. When the compressor works, the suction side of the compressor sucks the gaseous refrigerant with lower pressure, and the gaseous refrigerant with lower pressure can be compressed in the compressor to form high-pressure gas so as to facilitate subsequent heat exchange.

However, when the compressor is in operation, the heat exchange assembly is inevitably unstable in system control or other reasons, so that the suction pressure of the refrigerant fluctuates, and the suction pressure is lower than the minimum allowable pressure. When the pressure value is lower than the minimum allowable pressure, the temperature of the suction part is reduced, at the moment, the refrigerant entering the suction side can be in a liquid state and a gaseous state, the gas carrying the liquid refrigerant can impact the blades of the compressor, and the blades can be damaged by fatigue caused by long-term liquid impact.

Disclosure of Invention

The application mainly aims to provide a heat exchange assembly and a compressor with the same, so as to solve the technical problem of liquid carrying of a refrigerant at the air suction side of the compressor in the prior art.

In order to achieve the above object, according to one aspect of the present application, there is provided a heat exchange assembly comprising:

the heat exchange tube is provided with a first channel, a second channel, an air inlet channel and a heat exchange channel, wherein the first channel is communicated with an air suction part of the compressor, the second channel is communicated with an air discharge part of the compressor, at least part of the air inlet channel is arranged between the first channel and the second channel, an air inlet end of the air inlet channel is communicated with the air suction part of the compressor, an air outlet end of the air inlet channel is communicated with the heat exchange channel, a heat exchange outlet of the heat exchange channel is communicated with the air suction part of the compressor, and a heat exchange tube wall is arranged between the heat exchange channel and the second channel;

the reversing valve is provided with a valve port and is arranged in the first channel, the second channel and the air inlet channel, so that the reversing valve moves to an opening position for enabling the valve port to be communicated with the air inlet channel or a blocking position for enabling the valve port to avoid the air inlet channel under the action of pressure difference of the first channel and the second channel.

Further, the heat exchange tube includes:

the inner tube is provided with a first through hole and a second through hole, the first through hole and the second through hole are positioned between two ends of the inner tube, the first through hole and the second through hole are oppositely arranged, the first through hole is communicated with the air inlet end of the air inlet channel, and the second through hole forms the air outlet end of the air inlet channel; one end of the inner pipe is communicated with an air suction part of the compressor, the other end of the inner pipe is communicated with an air discharge part of the compressor, and a first channel, at least part of an air inlet channel and a second channel are sequentially arranged between one end of the inner pipe and the other end of the inner pipe; the reversing valve is movably arranged in the inner pipe, so that the valve port communicates the first through hole with the second through hole or the valve port avoids the first through hole and the second through hole;

the outer tube is sleeved on the inner tube, at least part of the inner tube and the outer tube are arranged at intervals to form a heat exchange channel, and at least part of the inner tube forms a heat exchange tube wall.

Further, a third via hole is formed in the outer tube, and the third via hole is opposite to the first via hole; the heat exchange tube further includes:

the air inlet pipe penetrates through the outer pipe and is connected with the inner pipe, the air inlet pipe is inserted into the first through hole and the third through hole, and the air inlet end of the air inlet pipe, which is far away from the first through hole, forms an air inlet end of the air inlet channel.

Further, one end of the inner tube and one end of the air inlet tube, which is far away from the first through hole, are both installed on the air suction part of the compressor, and one end of the inner tube and one end of the air inlet tube, which is far away from the first through hole, are arranged at intervals.

Further, an arrangement direction from one end of the inner tube to one end of the air inlet tube far away from the first guide hole is the same as an air inlet direction of the air suction part of the compressor.

Further, the heat exchange tube further comprises:

one end of the air return pipe is arranged on the air suction part of the compressor, and the other end of the air return pipe is communicated with the heat exchange outlet; one end of the air return pipe is arranged at intervals with one end of the inner pipe.

Further, the heat exchange tube further comprises:

one end of the air return pipe is arranged on the air suction part of the compressor, the other end of the air return pipe is communicated with the heat exchange outlet, and one end of the air inlet pipe, which is far away from the first guide hole, is positioned between one end of the air return pipe and one end of the inner pipe.

Further, the heat exchange tube further comprises:

the heat exchange fins are arranged in the heat exchange channels.

Further, the heat exchange fins extend along the extending direction of the inner tube, the inner tube and the outer tube are connected with the heat exchange fins so as to divide the heat exchange channel into an inflow channel and an outflow channel through the heat exchange fins, the end part of the inflow channel is communicated with the end part of the outflow channel, the air outlet end of the air inlet channel is communicated with the inflow channel, and the heat exchange outlet is communicated with the outflow channel.

Further, the inner tube is attached to at least part of the inner wall of the outer tube, and two sides of the heat exchange fin are respectively connected with the inner tube and the outer tube; or,

the inner tube and the outer tube are arranged at intervals to form a heat exchange channel, the heat exchange channel is annular, the heat exchange fins comprise first fins and second fins which are arranged at intervals, two sides of each first fin are connected with the inner tube and the outer tube respectively, two sides of each second fin are connected with the inner tube and the outer tube respectively, and the heat exchange channel is divided into an inflow channel and an outflow channel through the first fins and the second fins.

Further, one end of the outer tube is connected with one end of the inner tube or the tube wall of the inner tube so as to plug one end of the outer tube; the other end of the outer tube is connected with the other end of the inner tube or the tube wall of the inner tube or the exhaust tube of the exhaust part so as to plug the other end of the outer tube.

Further, the other end of the outer tube and the other end of the inner tube are both connected with an exhaust pipe of the exhaust part, a heat transfer hole is formed in the exhaust pipe, and the other end of the inner tube is opposite to the heat transfer hole, so that high-temperature exhaust gas at the heat transfer hole enters the second channel through the other end of the inner tube.

Further, the inner tube and the outer tube are of an integrated structure; and/or the number of the groups of groups,

one end of the inner tube is communicated with an air suction pipe of the air suction part; and/or the number of the groups of groups,

the other end of the inner tube is communicated with an exhaust pipe of the exhaust part; and/or the number of the groups of groups,

the inner tube is of a first bent tube structure, and the outer tube is of a second bent tube structure matched with the inner tube.

Further, the reversing valve includes:

the valve seat is provided with a valve port and is movably arranged on the inner pipe;

the elastic reset piece is arranged on the inner tube, and the reset end of the elastic reset piece is connected with the valve seat so as to reset the valve seat through the elastic reset piece.

According to another aspect of the present application, there is provided a compressor comprising the heat exchange assembly provided above.

By adopting the technical scheme, the heat exchange channel and the reversing valve are arranged in the heat exchange tube, and the reversing valve is enabled to avoid or block the air inlet channel through the valve port under the action of the pressure difference between the first channel and the second channel, so that the air inlet gas can be led into the heat exchange channel and exchanges heat with the high-temperature high-pressure gas under the condition that the air inlet gas is at low pressure and low temperature, the temperature of the air inlet gas is increased, the pressure is increased, and the problem of liquid carrying of the refrigerant on the air suction side of the compressor can be effectively solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

FIG. 1 shows a schematic structural view of a heat exchange assembly provided in accordance with an embodiment of the present application;

FIG. 2 shows a cross-sectional view of a portion of the structure of a heat exchange assembly provided in accordance with an embodiment of the present application;

FIG. 3 shows a schematic view of a reversing valve of a heat exchange assembly provided in accordance with an embodiment of the present application in an open position;

fig. 4 shows a schematic structural view of a reversing valve of a heat exchange assembly according to an embodiment of the present application in a blocking position;

fig. 5 is a schematic view showing the structure of a heat exchange tube provided according to an embodiment of the present application;

FIG. 6 shows a schematic view of a partial enlarged structure at A in FIG. 5;

FIG. 7 shows a schematic structural view of an inner tube provided according to an embodiment of the present application;

fig. 8 shows a schematic structural view of an exhaust pipe provided according to an embodiment of the present application.

Wherein the above figures include the following reference numerals:

10. a heat exchange tube; 11. a first channel; 12. a second channel; 13. an air intake passage; 14. a heat exchange channel; 141. an inflow channel; 142. an outflow channel; 15. an inner tube; 151. a first via hole; 152. a second via hole; 16. an outer tube; 161. a third via hole; 162. a fourth via hole; 17. an air inlet pipe; 18. an air return pipe;

20. an air suction unit; 21. an air suction pipe;

30. an exhaust unit; 31. an exhaust pipe; 311. a heat transfer hole;

40. a reversing valve; 41. a valve port; 42. a valve seat; 43. an elastic reset piece;

50. a heat exchange fin; 51. a first fin; 52. and a second fin.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1 to 8, in a first embodiment of the present application, a heat exchange assembly is provided, which includes a heat exchange tube 10 and a reversing valve 40. The heat exchange tube 10 has a first passage 11, a second passage 12, an air intake passage 13, and a heat exchange passage 14, the first passage 11 communicates with an air intake portion 20 of the compressor, the second passage 12 communicates with an air exhaust portion 30 of the compressor, at least part of the air intake passage 13 is disposed between the first passage 11 and the second passage 12, an air intake end of the air intake passage 13 communicates with the air intake portion 20 of the compressor, an air outlet end of the air intake passage 13 communicates with the heat exchange passage 14, a heat exchange outlet of the heat exchange passage 14 communicates with the air intake portion 20 of the compressor, and a heat exchange tube wall is provided between the heat exchange passage 14 and the second passage 12. The directional valve 40 has a valve port 41, and the directional valve 40 is disposed in the first passage 11, the second passage 12, and the intake passage 13 so as to move the directional valve 40 to an open position in which the valve port 41 communicates with the intake passage 13 or a blocking position in which the valve port 41 is retracted from the intake passage 13 by a pressure difference between the first passage 11 and the second passage 12.

With the arrangement, during normal operation, the pressure difference between the first channel 11 and the second channel 12 is small because the pressure of the refrigerant gas entering the heat exchange assembly is high, the reversing valve 40 does not move, the air inlet channel 13 is blocked, and the air inlet gas normally enters the interior of the compressor; when the intake pressure of the refrigerant gas fluctuates and is lower than the allowable minimum pressure, the pressure of the gas in the suction part 20 is lower than the pressure in normal operation, the pressure in the first channel 11 is lower than the pressure in the second channel 12, at this time, the gas in the second channel 12 pushes the reversing valve 40 and enables the valve port 41 to communicate with the intake channel 13 because of the larger pressure of the gas in the second channel 12, the intake gas can flow to the heat exchange channel 14 through the intake channel 13, and the heat of the high-temperature and high-pressure gas in the second channel 12 can be transferred to the gas in the heat exchange channel 14 through the heat exchange tube wall because of the heat exchange tube wall between the heat exchange channel 14 and the second channel 12, so that the temperature of the gas in the heat exchange channel 14 is increased. Therefore, when the air inlet pressure is lower than the allowable minimum pressure, the temperature of the air inlet gas can be effectively increased, so that the condition that the refrigerant on the air suction side of the compressor is brought into liquid is avoided, and the technical problem that the refrigerant on the air suction side of the compressor is brought into liquid in the prior art can be effectively solved.

It should be noted that "the direction valve 40 is disposed in the first passage 11, the second passage 12, and the intake passage 13" may be understood that the direction valve 40 is disposed at the boundary of the first passage 11, the second passage 12, and the intake passage 13 such that a part of the direction valve 40 is located in the first passage 11, another part of the direction valve 40 is located in the second passage 12, and yet another part of the direction valve 40 is located in the intake passage 13.

Specifically, the heat exchange tube 10 further includes an inner tube 15 and an outer tube 16. The inner tube 15 is provided with a first through hole 151 and a second through hole 152, the first through hole 151 and the second through hole 152 are positioned between two ends of the inner tube 15, the first through hole 151 and the second through hole 152 are oppositely arranged, the first through hole 151 is communicated with the air inlet end of the air inlet channel 13, and the second through hole 152 forms the air outlet end of the air inlet channel 13; one end of the inner tube 15 is communicated with the air suction part 20 of the compressor, the other end of the inner tube 15 is communicated with the air discharge part 30 of the compressor, and a first channel 11, at least part of the air inlet channel 13 and a second channel 12 are sequentially arranged between one end of the inner tube 15 and the other end of the inner tube 15; the reversing valve 40 is movably disposed within the inner tube 15 such that the valve port 41 communicates the first and second through-holes 151 and 152 or such that the valve port 41 is clear of the first and second through-holes 151 and 152. The outer tube 16 is sleeved on the inner tube 15, at least part of the inner tube 15 and the outer tube 16 are arranged at intervals to form a heat exchange channel 14, and at least part of the inner tube 15 forms a heat exchange tube wall. With such arrangement, the heat exchange channel 14 can be formed by the cooperation of the outer tube 16 and the inner tube 15, so that the circulation and heat exchange of gas can be facilitated; and the arrangement of the first via hole 151 and the second via hole 152 can be more convenient for distributing the gas, and can more effectively realize heat exchange.

Specifically, the outer tube 16 is provided with a third through hole 161, and the third through hole 161 is disposed opposite to the first through hole 151; the heat exchange tube 10 further includes an intake pipe 17. The air intake pipe 17 passes through the outer pipe 16 to be connected with the inner pipe 15, the air intake pipe 17 is inserted at the first through hole 151 and the third through hole 161, and an end of the air intake pipe 17 away from the first through hole 151 forms an air intake end of the air intake passage 13. Wherein when the reversing valve 40 is in the open position, the passage inside the intake pipe 17 communicates with at least a portion of the inner pipe 15 between the first and second through-holes 151, 152 to form the intake passage 13. With such arrangement, the intake air can be conveniently introduced into the heat exchange tube 10 through the intake pipe 17 and the third through hole 161, and the intake air of the heat exchange assembly can be further facilitated; and, since the third through hole 161 is provided opposite to the first through hole 151, not only is the installation of the intake pipe 17 facilitated, but also the intake gas can be accurately delivered.

In the present embodiment, one end of the inner tube 15 and one end of the air intake tube 17 away from the first through hole 151 are both mounted on the suction portion 20 of the compressor, and one end of the inner tube 15 and one end of the air intake tube 17 away from the first through hole 151 are disposed at intervals. By adopting the arrangement, when the air inlet pressure is lower, the air inlet gas is firstly introduced into the heat exchange tube 10 for heat exchange, so that the gas flowing into the compressor is high in temperature and free of liquid, and the condition that the refrigerant on the air inlet side of the compressor is liquid can be further avoided.

Specifically, the heat exchange tube 10 is arranged in the same direction as the intake direction of the intake portion 20 of the compressor along the end of the inner tube 15 to the end of the intake tube 17 remote from the first through hole 151. It should be noted that "the direction of arrangement of the heat exchange tubes 10 along the end of the inner tube 15 to the end of the air intake tube 17 away from the first through hole 151 is the same as the air intake direction of the air intake portion 20" may be understood as: when the intake direction of the intake portion 20 is from top to bottom, one end of the inner tube 15 is also located above one end of the intake tube 17 remote from the first through hole 151. With such a configuration, the flow of the intake air after being introduced into the heat exchange tube 10 can be facilitated, and since the arrangement direction and the intake direction are the same, the intake air can be ensured to enter the heat exchange tube 10 in time and return to the compressor along the air flow direction.

In this embodiment, the heat exchange tube 10 further includes an air return tube 18. One end of the air return pipe 18 is arranged on the air suction part 20 of the compressor, and the other end of the air return pipe 18 is communicated with the heat exchange outlet; one end of the muffler 18 is spaced from one end of the inner pipe 15. With such an arrangement, it is possible to facilitate the return of the heat exchanged gas to the inside of the compressor, and to return the heated gas to the suction portion 20 to participate in the compression process, while it is possible to further heat the gas entering the suction portion 20 by using the heated gas.

Specifically, an end of the intake pipe 17 remote from the first through hole 151 is located between an end of the muffler 18 and an end of the inner pipe 15. By adopting such a configuration, interference between the intake pipe 17 and the return pipe 18 can be avoided, and the intake air and the return air can be separated conveniently and the independent circulation channels can be provided, so that the circulation of the air can be facilitated more.

In this embodiment, the heat exchange tube 10 further includes heat exchange fins 50, and the heat exchange fins 50 are disposed within the heat exchange channels 14. With such an arrangement, the heat exchange fins 50 can effectively increase the heat exchange area, thereby enabling the gas in the heat exchange channel 14 to exchange heat better.

Specifically, the heat exchange fins 50 extend in the extending direction of the inner tube 15, and both the inner tube 15 and the outer tube 16 are connected to the heat exchange fins 50 to partition the heat exchange channel 14 into an inflow channel 141 and an outflow channel 142 by the heat exchange fins 50, the end of the inflow channel 141 communicates with the end of the outflow channel 142, the air outlet end of the air inlet channel 13 communicates with the inflow channel 141, and the heat exchange outlet communicates with the outflow channel 142. By adopting such arrangement, two independent flow channels can be provided for inflow and outflow of gas, the condition that the heat exchange effect is reduced due to mutual interference of inflow and outflow can be avoided, and the heat exchange fin 50 can also heat the inflow channel 141 and the outflow channel 142 on two sides simultaneously due to the fact that the inflow channel 141 and the outflow channel 142 are separated by the heat exchange fin 50, and the heat exchange effect can be further improved.

In this embodiment, the inner tube 15 may be attached to at least a portion of the inner wall of the outer tube 16, and two sides of the heat exchange fin 50 are connected to the inner tube 15 and the outer tube 16, respectively; alternatively, the inner tube 15 and the outer tube 16 may be disposed at intervals to form the heat exchange channel 14, the heat exchange channel 14 is annular, the heat exchange fins 50 include first fins 51 and second fins 52 disposed at intervals, both sides of the first fins 51 are respectively connected with the inner tube 15 and the outer tube 16, and both sides of the second fins 52 are respectively connected with the inner tube 15 and the outer tube 16 to partition the heat exchange channel 14 into the inflow channel 141 and the outflow channel 142 by the first fins 51 and the second fins 52. When the inner tube 15 and the outer tube 16 are partially attached, the heat exchange channel 14 is formed in the space between the inner tube 15 and the outer tube 16, and the heat exchange channel 14 can be divided into the inflow channel 141 and the outflow channel 142 only by arranging one heat exchange fin 50, so that the arrangement cost of the heat exchange fin 50 can be saved, and the fixation between the inner tube 15 and the outer tube 16 can be more stable. When the inner tube 15 and the outer tube 16 are completely spaced, the heat exchange channel 14 is an annular channel between the inner tube 15 and the outer tube 16, preferably, two heat exchange fins 50 are required to be arranged inside the annular channel to divide the heat exchange channel into an inflow channel 141 and an outflow channel 142, so that the heat exchange area of the heat exchange fins 50 can be enhanced to the greatest extent, and the heat exchange effect is effectively improved.

Specifically, one end of the outer tube 16 is connected to one end of the inner tube 15 or a wall of the inner tube 15 to block one end of the outer tube 16; the other end of the outer tube 16 is connected to the other end of the inner tube 15 or the wall of the inner tube 15 or the exhaust pipe 31 of the exhaust section 30 to seal the other end of the outer tube 16. With such an arrangement, the outer tube 16 and the inner tube 15 can be subjected to gas fluid through the specific gas fluid holes, so that the gas tightness inside the inner tube 15 and the outer tube 16 can be effectively enhanced, and the heat exchange efficiency of the gas can be further improved.

Specifically, "one end of the outer tube 16 is connected to one end of the inner tube 15 or a tube wall of the inner tube 15 to block one end of the outer tube 16" may be understood as that a first block plate is provided between one end of the outer tube 16 and one end of the inner tube 15 to block a space between one end of the outer tube 16 and one end of the inner tube 15 by the first block plate. The "the other end of the outer tube 16 is connected to the other end of the inner tube 15 or the wall of the inner tube 15 or the exhaust tube 31 of the exhaust portion 30 to block the other end of the outer tube 16" may be understood as that a second block plate is provided between the other end of the outer tube 16 and the other end of the inner tube 15, or the other end of the outer tube 16 is connected to the wall of the inner tube 15, or the other end of the outer tube 16 is connected to the exhaust tube 31 of the exhaust portion 30, by any of the above means to block the space between the other end of the outer tube 16 and the other end of the inner tube 15.

In this embodiment, the other end of the outer tube 16 and the other end of the inner tube 15 are both connected to the exhaust tube 31 of the exhaust portion 30, the exhaust tube 31 is provided with a heat transfer hole 311, and the other end of the inner tube 15 is disposed opposite to the heat transfer hole 311 so that high-temperature exhaust gas at the heat transfer hole 311 enters the second passage 12 through the other end of the inner tube 15. With such an arrangement, it is possible to facilitate the introduction of high-temperature gas into the interior of the inner tube 15, thereby better achieving the operation of high-temperature gas introduction.

In the present embodiment, the other end of the inner tube 15 protrudes from the heat exchange fin 50, so that the outer tube 16 can be conveniently circulated in the exhaust tube 31 to allow the inflow passage 141 and the outflow passage 142 to be in communication.

In the present embodiment, the inner tube 15 and the outer tube 16 may be of an integrally formed structure, so that the number of steps for post-installation can be reduced, and the efficiency of the heat exchange tube 10 at the time of installation can be enhanced.

Alternatively, one end of the inner tube 15 may be in communication with the air suction tube 21 of the air suction portion 20, so that the change valve 40 provided inside the inner tube 15 can more easily sense the pressure of the air in the air suction portion 20, thereby more preferably making the change valve 40 perform the position change.

Alternatively, the other end of the inner tube 15 communicates with the exhaust tube 31 of the exhaust unit 30, so that high-temperature gas can be directly introduced from the exhaust unit 30 into the inner tube 15, the introduction of high-temperature gas can be facilitated, and the utilization rate of gas can be improved by recompression of high-temperature gas.

Alternatively, the inner tube 15 is a first bent tube structure, and the outer tube 16 is a second bent tube structure adapted to the inner tube 15. With such an arrangement, the connection of the heat exchange tube 10 and the compressor can be facilitated.

Further alternatively, the above embodiments may be satisfied at the same time, so that the gas circulation efficiency in the heat exchange tube 10 can be further improved, and the installation of the heat exchange tube 10 can be simplified.

Specifically, the reversing valve 40 further includes a valve seat 42 and a resilient return 43. The valve seat 42 is provided with a valve port 41, and the valve seat 42 is movably provided on the inner tube 15. The elastic restoring member 43 is disposed on the inner tube 15, and a restoring end of the elastic restoring member 43 is connected to the valve seat 42 to restore the valve seat 42 through the elastic restoring member 43. With this arrangement, the switching valve 40 can be moved better in response to the pressure difference by the cooperation of the valve seat 42 and the elastic restoring member 43, so that a better transition between the open position and the blocking position of the switching valve 40 is achieved. Specifically, the elastic restoring member 43 may be an elastic member.

In this embodiment, the exhaust pipe 31 is provided with a heat transfer hole 311, the heat exchange pipe 10 connects the exhaust pipe 31 with the intake pipe 17 and the muffler 18, and one side of the air suction portion 20 is provided with a first exchange port, a second exchange port, and a third exchange port, which are respectively disposed corresponding to one end of the inner pipe 15, one end of the intake pipe 17 far from the first through hole 151, and one end of the muffler 18. The heat exchange tube 10 has a double-layered tube of an outer tube 16 and an inner tube 15, and the outer tube 16 and the inner tube 15 may be integrally cast. The outer tube 16 is provided with a third through hole 161 and a fourth through hole 162; the inner tube 15 is provided with heat exchange fins 50, the heat exchange fins 50 separating the inner tube 15 from the outer tube 16 into an inflow channel 141 and an outflow channel 142. The inner tube 15 further has an installation space of the reversing valve 40, and first and second through holes 151 and 152, which are through holes. The inner pipe 15 is connected to the heat transfer hole 311 of the exhaust pipe 31 and receives the exhaust high temperature gas. The length of the reversing valve 40 allows the right side to still block the second through hole 152 of the inner tube 15 when the valve body of the reversing valve 40 is moved to the left to be conducted, preventing the exhaust high temperature gas from being conducted with the second through hole 152. In a normal state, the reversing valve 40 is closed, and the suction refrigerant does not enter the inflow channel 141 and cannot exchange heat; when the suction pressure is lower than the minimum allowable pressure, the reversing valve 40 moves leftwards in time, and the suction refrigerant enters the inflow channel 141 to exchange heat with the inner tube 15, and then turns out from the outflow channel 142 to return to the compressor through the muffler 18.

Specifically, one end of the heat exchange tube 10 is welded and fixed to the first exchange port, and the other end is welded and fixed to the exhaust tube 31 through the outer tube 16, wherein the inner tube 15 of the heat exchange tube 10 is communicated with the heat transfer hole 311 of the exhaust tube 31. The high-temperature exhaust gas enters the inner tube 15 of the heat exchange tube 10 through the heat transfer holes 311 and finally is blocked at the right side of the reversing valve 40 to form single-side conduction with the exhaust tube 31. The reversing valve 40 is arranged in the inner tube 15 of the heat exchange tube 10, the left side of the reversing valve 40 is a low-pressure refrigerant, and the right side of the reversing valve 40 is a high-temperature exhaust refrigerant; the high-temperature exhaust refrigerant enters the inner tube 15 from the heat transfer hole 311 of the exhaust tube 31.

In this embodiment, one end of the air inlet pipe 17 is welded to the second exchange port, and the other end is inserted into the first through hole 151 of the inner pipe 15 of the heat exchange pipe 10, and is welded to the fourth through hole 162, so as to communicate the second exchange port with the inner pipe 15. One end of the air return pipe 18 is fixed with the third exchange port by adopting a welding mode, and the other end is fixed with the third through hole 161 by adopting a welding mode, so that the third exchange port is communicated with the outer pipe 16.

In a second embodiment of the present application, a compressor is provided that includes the heat exchange assembly of the first embodiment.

From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects: through setting up the switching-over valve 40 that can move under the pressure differential effect of first passageway 11 and second passageway 12 in heat exchange tube 10 to when the pressure of air intake is lower, through the high-pressure gas pressure in the second passageway 12 moving switching-over valve 40 in order to introduce low-temperature gas into heat exchange channel 14 and exchanging heat, can make air intake obtain effectual intensification, thereby avoid the condition of air intake to take the liquid to appear, can effectively solve the technical problem of heat exchange assembly air intake area liquid among the prior art.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (15)

1. A heat exchange assembly, comprising:

the heat exchange tube (10), heat exchange tube (10) has first passageway (11), second passageway (12), air inlet channel (13) and heat exchange channel (14), first passageway (11) communicate with the portion of inhaling (20) of compressor, second passageway (12) communicate with portion of exhausting (30) of compressor, at least part of air inlet channel (13) set up between first passageway (11) and second passageway (12), the air inlet end of air inlet channel (13) communicates with portion of inhaling (20) of compressor, the air outlet end of air inlet channel (13) communicates with portion of exchanging heat (14), the heat exchange export of heat exchange channel (14) communicates with portion of inhaling (20) of compressor, heat exchange channel (14) have heat exchange pipe wall between second passageway (12);

the reversing valve (40) is provided with a valve port (41), and the reversing valve (40) is arranged in the first channel (11), the second channel (12) and the air inlet channel (13) so as to enable the reversing valve (40) to move to an opening position enabling the valve port (41) to be communicated with the air inlet channel (13) or enable the valve port (41) to avoid a blocking position of the air inlet channel (13) under the action of the pressure difference of the first channel (11) and the second channel (12).

2. The heat exchange assembly according to claim 1, wherein the heat exchange tube (10) comprises:

the air inlet device comprises an inner pipe (15), wherein a first through hole (151) and a second through hole (152) are formed in the inner pipe (15), the first through hole (151) and the second through hole (152) are located between two ends of the inner pipe (15), the first through hole (151) and the second through hole (152) are oppositely arranged, the first through hole (151) is communicated with an air inlet end of an air inlet channel (13), and the second through hole (152) forms an air outlet end of the air inlet channel (13); one end of the inner tube (15) is communicated with an air suction part (20) of the compressor, the other end of the inner tube (15) is communicated with an air discharge part (30) of the compressor, and the first channel (11), at least part of the air inlet channel (13) and the second channel (12) are sequentially arranged between one end of the inner tube (15) and the other end of the inner tube (15); the reversing valve (40) is movably arranged in the inner pipe (15) so that the valve port (41) communicates the first through hole (151) with the second through hole (152) or the valve port (41) avoids the first through hole (151) and the second through hole (152);

the outer tube (16), outer tube (16) cover is established on inner tube (15), at least part of inner tube (15) with outer tube (16) interval sets up in order to form heat transfer passageway (14), at least part of inner tube (15) forms the heat transfer pipe wall.

3. The heat exchange assembly according to claim 2, wherein a third through hole (161) is provided on the outer tube (16), the third through hole (161) being arranged opposite to the first through hole (151); the heat exchange tube (10) further includes:

the air inlet pipe (17), air inlet pipe (17) pass outer tube (16) with inner tube (15) are connected, air inlet pipe (17) are inserted and are established first via hole (151) with third via hole (161) department, air inlet pipe (17) keep away from the one end of first via hole (151) forms the inlet end of air inlet channel (13).

4. A heat exchange assembly according to claim 3, wherein one end of the inner tube (15) and one end of the air inlet tube (17) remote from the first through hole (151) are both mounted on the suction portion (20) of the compressor, and one end of the inner tube (15) and one end of the air inlet tube (17) remote from the first through hole (151) are disposed at intervals.

5. The heat exchange assembly according to claim 4, wherein an arrangement direction along an end of the inner tube (15) to an end of the air intake tube (17) remote from the first through hole (151) is the same as an air intake direction of the air suction portion (20) of the compressor.

6. The heat exchange assembly according to claim 2, wherein the heat exchange tube (10) further comprises:

an air return pipe (18), wherein one end of the air return pipe (18) is arranged on an air suction part (20) of the compressor, and the other end of the air return pipe (18) is communicated with the heat exchange outlet; one end of the air return pipe (18) is arranged at intervals with one end of the inner pipe (15).

7. The heat exchange assembly of claim 5, wherein the heat exchange tube (10) further comprises:

the air return pipe (18), one end of the air return pipe (18) is arranged on an air suction part (20) of the compressor, the other end of the air return pipe (18) is communicated with the heat exchange outlet, and one end of the air inlet pipe (17) away from the first conducting hole (151) is located between one end of the air return pipe (18) and one end of the inner pipe (15).

8. The heat exchange assembly according to claim 2, wherein the heat exchange tube (10) further comprises:

and the heat exchange fins (50) are arranged in the heat exchange channels (14).

9. The heat exchange assembly according to claim 8, wherein the heat exchange fin (50) extends in the extending direction of the inner tube (15), the inner tube (15) and the outer tube (16) are both connected with the heat exchange fin (50) to partition the heat exchange passage (14) into an inflow passage (141) and an outflow passage (142) by the heat exchange fin (50), an end of the inflow passage (141) communicates with an end of the outflow passage (142), an outlet end of the air intake passage (13) communicates with the inflow passage (141), and the heat exchange outlet communicates with the outflow passage (142).

10. The heat exchange assembly of claim 9 wherein the heat exchange assembly comprises,

the inner tube (15) is attached to at least part of the inner wall of the outer tube (16), and two sides of the heat exchange fin (50) are respectively connected with the inner tube (15) and the outer tube (16); or,

the inner tube (15) with outer tube (16) interval sets up in order to form heat transfer passageway (14), heat transfer passageway (14) are annular, heat transfer fin (50) are including first fin (51) and second fin (52) that the interval set up, the both sides of first fin (51) respectively with inner tube (15) with outer tube (16) are connected, the both sides of second fin (52) respectively with inner tube (15) with outer tube (16) are connected, in order to pass through first fin (51) with second fin (52) will heat transfer passageway (14) are separated into inflow passageway (141) with outflow passageway (142).

11. A heat exchange assembly according to claim 2, wherein one end of the outer tube (16) is connected to one end of the inner tube (15) or a tube wall of the inner tube (15) to block one end of the outer tube (16); the other end of the outer tube (16) is connected with the other end of the inner tube (15) or the tube wall of the inner tube (15) or the exhaust tube (31) of the exhaust part (30) so as to seal the other end of the outer tube (16).

12. The heat exchange assembly according to claim 11, wherein the other end of the outer tube (16) and the other end of the inner tube (15) are both connected to an exhaust tube (31) of the exhaust portion (30), a heat transfer hole (311) is provided in the exhaust tube (31), and the other end of the inner tube (15) is disposed opposite to the heat transfer hole (311) so that high-temperature exhaust gas at the heat transfer hole (311) enters the second passage (12) through the other end of the inner tube (15).

13. A heat exchange assembly according to any one of claims 2 to 10 wherein,

the inner tube (15) and the outer tube (16) are of an integrated structure; and/or the number of the groups of groups,

one end of the inner tube (15) is communicated with an air suction tube (21) of the air suction part (20); and/or the number of the groups of groups,

the other end of the inner tube (15) is communicated with an exhaust pipe (31) of the exhaust part (30); and/or the number of the groups of groups,

the inner tube (15) is of a first bent tube structure, and the outer tube (16) is of a second bent tube structure matched with the inner tube (15).

14. The heat exchange assembly according to any one of claims 2 to 12, wherein the reversing valve (40) comprises:

a valve seat (42), wherein the valve port (41) is arranged on the valve seat (42), and the valve seat (42) is movably arranged on the inner pipe (15);

the elastic reset piece (43) is arranged on the inner tube (15), and the reset end of the elastic reset piece (43) is connected with the valve seat (42) so as to reset the valve seat (42) through the elastic reset piece (43).

15. A compressor comprising the heat exchange assembly of any one of claims 1 to 14.