WO2023236627A1

WO2023236627A1 - Heat regenerator, refrigeration system, and refrigeration equipment

Info

Publication number: WO2023236627A1
Application number: PCT/CN2023/083431
Authority: WO
Inventors: 余圣辉
Original assignee: 合肥美的电冰箱有限公司; 合肥华凌股份有限公司; 美的集团股份有限公司
Priority date: 2022-06-09
Filing date: 2023-03-23
Publication date: 2023-12-14
Also published as: CN115014003B; CN115014003A

Abstract

A heat regenerator (10), a refrigeration system (100), and refrigeration equipment (1000). The heat regenerator (10) comprises a first gas return pipe (11), a second gas return pipe (12), and an exhaust pipe (13). The exhaust pipe (13) sequentially passes through the first gas return pipe (11) and the second gas return pipe (12); the exhaust direction in the exhaust pipe (13) is opposite to the gas return direction in the first gas return pipe (11); and the exhaust direction in the exhaust pipe (13) is opposite to the gas return direction in the second gas return pipe (12).

Description

Regenerators, refrigeration systems and refrigeration equipment

priority information

This application requests the priority and rights of the patent application with patent application number 202210651884.1, which was submitted to the State Intellectual Property Office of China on June 9, 2022, and the full text of which is incorporated herein by reference.

Technical field

The present application relates to the technical field of refrigeration equipment, and in particular, to a regenerator, a refrigeration system and a refrigeration equipment.

Background technique

At present, in refrigeration equipment, the return air pipe and the capillary tube are usually placed close to each other for heat exchange, thereby reducing the temperature of the refrigerant flowing from the capillary tube to the evaporator, and increasing the temperature of the refrigerant flowing from the return air pipe to the compressor, thereby improving refrigeration. Effect. However, the heat exchange effect of the above method is poor, resulting in poor cooling effect.

Contents of the invention

To this end, this application provides a regenerator, a refrigeration system and a refrigeration equipment.

The regenerator in the embodiment of the present application includes a first air return pipe, a second air return pipe and an exhaust gas. The exhaust pipe passes through the first air return pipe and the second air return pipe in sequence. The direction of the exhaust gas in the exhaust pipe is opposite to the direction of the return air in the first air return pipe. The direction of the exhaust gas is opposite to the direction of the return air in the second return air pipe.

The regenerator in the embodiment of the present application is provided with a first air return pipe and a second air return pipe, and the exhaust pipes are passed through the first air return pipe and the second air return pipe in sequence, thereby increasing the number of return air pipes and at the same time making the exhaust The contact between the pipe and the return pipe is closer, which can improve the heat exchange effect. In addition, the exhaust direction of the exhaust pipe of the present application is opposite to the return air direction of the first return air pipe and the return air direction of the second return air pipe, so that the exhaust gas and return air flow countercurrently, thereby further improving the heat exchange effect. .

The refrigeration system in the embodiment of the present application includes a compressor, a condenser, a first evaporator, a second evaporator and the regenerator described in the above embodiment; the refrigerant temperature at the outlet of the first evaporator is higher than that of the third evaporator. The refrigerant temperature at the outlet of the second evaporator; the inlet of the condenser is connected to the outlet of the compressor, the outlet of the condenser is connected to the inlet end of the exhaust pipe, and the outlet end of the exhaust pipe is connected to The inlet of the second evaporator is connected; the first inlet of the first return pipe is connected with the outlet of the first evaporator, and the first outlet of the first return pipe is connected with the inlet of the compressor. The second inlet portion of the second return air pipe is connected to the outlet of the second evaporator, and the second outlet portion of the second return air pipe is connected to the inlet of the compressor.

In the refrigeration system of the embodiment of the present application, a first return air pipe and a second return air pipe are provided, and the exhaust pipe is passed through the first air return pipe and the second return air pipe in sequence, thereby increasing the number of return air pipes and making the exhaust pipe The contact with the return air pipe is closer, which can improve the heat exchange effect. In addition, the exhaust direction of the exhaust pipe of the present application is opposite to the return air direction of the first return air pipe and the return air direction of the second return air pipe, so that the exhaust gas and return air flow countercurrently, thereby further improving the heat exchange effect. .

In addition, by connecting the outlet of the first evaporator with a higher temperature and the outlet of the second evaporator with a lower temperature with the first inlet of the first return air pipe and the second inlet of the second return air pipe respectively, the exhaust The air pipe first exchanges heat with the return air in the first return air pipe with a higher temperature. The temperature of the exhaust gas in the exhaust pipe decreases, and then exchanges heat again with the return air in the second return air pipe with a lower temperature. Thereby further reducing the temperature of the exhaust gas in the exhaust pipe, so that the second evaporator connected to the outlet end of the exhaust pipe can receive exhaust gas with a lower temperature, thereby improving the cooling effect of the second evaporator. Refrigeration equipment that can be used in cryogenic fields.

The refrigeration equipment according to the embodiment of the present application includes a casing, and the refrigeration system or regenerator of the above embodiment. The refrigeration system is arranged in the casing, and the regenerator is arranged in the casing.

The refrigeration equipment in the embodiment of the present application is provided with a first return air pipe and a second return air pipe through a regenerator, and the exhaust pipes are passed through the first air return pipe and the second return air pipe in sequence, thereby increasing the number of return air pipes, so that The exhaust pipe and return pipe are in closer contact, which can improve the heat exchange effect. In addition, the exhaust direction of the exhaust pipe of the present application is opposite to the return air direction of the first return air pipe and the return air direction of the second return air pipe, so that the exhaust gas and return air flow countercurrently, thereby further improving the heat exchange effect. .

In addition, in the refrigeration system, the outlet of the first evaporator with a higher temperature and the outlet of the second evaporator with a lower temperature are respectively connected to the first inlet of the first return air pipe and the second inlet of the second return air pipe, The exhaust pipe first exchanges heat with the return air in the first return air pipe with a higher temperature. The temperature of the exhaust gas in the exhaust pipe decreases, and then exchanges heat with the return air in the second return air pipe with a lower temperature. heat, thereby further reducing the temperature of the exhaust gas in the exhaust pipe, so that the second evaporator connected to the outlet end of the exhaust pipe can receive exhaust gas with a lower temperature, thereby improving the cooling effect of the second evaporator. It can be applied Refrigeration equipment for cryogenic fields.

Additional aspects and advantages of embodiments of the application 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 application.

Description of the drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

Figure 1 is a schematic plan view of a regenerator according to an embodiment of the present application;

Figure 2 is a schematic diagram of the internal structure of a regenerator in some embodiments of the present application;

Figure 3 is a schematic diagram of the internal structure of the first air return pipe or the second air return pipe in some embodiments of the present application;

Figure 4 is a schematic plan view of a regenerator according to another embodiment of the present application;

Figure 5 is a schematic plan view of a regenerator according to yet another embodiment of the present application;

Figure 6 is a schematic structural diagram of a refrigeration system according to an embodiment of the present application;

Figure 7 is a schematic structural diagram of a refrigeration system according to another embodiment of the present application;

Figure 8 is a schematic structural diagram of a refrigeration system according to yet another embodiment of the present application; and

Figure 9 is a schematic plan view of a refrigeration device according to some embodiments of the present application.

Detailed ways

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as limiting the present application.

In the description of this application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The directions indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" etc. or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it cannot be construed as a limitation on this application. Furthermore, the terms "first", "Second" is used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the technical features indicated. Thus, features defined as “first” and “second” may explicitly or implicitly include one or more of the described features. In the description of this application, "plurality" means two or more than two, unless otherwise explicitly and specifically limited.

In the description of this application, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connect, or connect in one piece. The connection can be mechanical or electrical. It can be a direct connection or an indirect connection through an intermediary. It can be an internal connection between two elements or an interactive relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

The regenerator 10 in the embodiment of the present application includes a first air return pipe 11 , a second air return pipe 12 and an exhaust pipe 13 . The exhaust pipe 13 passes through the first air return pipe 11 and the second air return pipe 12 in sequence. The direction of the exhaust gas in the exhaust pipe 13 is opposite to the direction of the return air in the first return air pipe 11. The direction of the exhaust gas in the exhaust pipe 13 is The direction of the return air in the second air return pipe 12 is opposite.

The regenerator 10 in the embodiment of the present application is provided with a first air return pipe 11 and a second air return pipe 12, and the exhaust pipe 13 is inserted through the first air return pipe 11 and the second air return pipe 12 in order, thereby increasing the number of return air pipes. At the same time, the exhaust pipe 13 and the return pipe are in closer contact, which can improve the heat exchange effect. In addition, the exhaust direction of the exhaust pipe 13 of the present application is opposite to the return air direction of the first return air pipe 11 and the return air direction of the second return air pipe 12, so that the exhaust gas and return air flow countercurrently, thereby further improving the Heat exchange effect.

Referring to FIGS. 1 to 3 , the regenerator 10 includes a first air return pipe 11 , a second air return pipe 12 and an exhaust pipe 13 .

The first air return pipe 11 includes a first cylinder body 111, a first inlet part 112 and a first outlet part 113. The first inlet part 112 and the first outlet part 113 are respectively provided at opposite ends of the first cylinder body 111, and are both It protrudes and extends from the outer wall of the first barrel 111 .

Optionally, when the first air return pipe 11 is installed vertically (such as parallel to the height direction of the refrigeration equipment such as a refrigerator), the first inlet portion 112 is located at the bottom of the first barrel 111 and the first outlet portion 113 is located at the first The top of the barrel body 111 allows the liquid in the return air to flow downward under the action of gravity when the gas in the return air flows upward, thereby achieving gas-liquid separation. There is no need to set up a separate gas-liquid separator to prevent the liquid from passing through the first return air pipe 11 Then it enters the compressor, causing liquid hammering and affecting the compression effect of the compressor.

The first heat exchange space 114 can be enclosed by the first barrel 111. The inside of the first barrel 111 is located within the first heat exchange space 114, and the outside of the first barrel 111 is located outside the first heat exchange space 114. .

The second air return pipe 12 includes a second cylinder body 121, a second inlet part 122 and a second outlet part 123. The second inlet part 122 and the second outlet part 123 are respectively provided at opposite ends of the second cylinder body 121, and are both It protrudes and extends from the outer wall of the second barrel 121 .

Optionally, when the second air return pipe 12 is installed vertically (such as parallel to the height direction of the refrigeration equipment such as a refrigerator), the second inlet portion 122 is located at the bottom of the second barrel 121 and the second outlet portion 123 is located at the second The top of the barrel body 121 allows the liquid in the return air to flow downward under the action of gravity when the gas in the return air flows upward, thereby realizing gas-liquid separation. There is no need to set up a separate gas-liquid separator to prevent the liquid from passing through the second return air pipe 12 Then it enters the compressor, causing liquid hammering and affecting the compression effect of the compressor.

The second heat exchange space 124 can be enclosed by the second barrel 121. The inside of the second barrel 121 is located within the second heat exchange space 124, and the outside of the second barrel 121 is located outside the second heat exchange space 124. .

Please refer to FIG. 2 , the exhaust pipe 13 is passed through the first air return pipe 11 and the second air return pipe 12 in sequence. That is to say, the exhaust The tube 13 penetrates into the first air return pipe 11 and then goes out from the first air return pipe 11, and then penetrates into the second air return pipe 12 again and then goes out from the second air return pipe 12, thereby achieving The exhaust pipe 13 is passed through the first air return pipe 11 and the second air return pipe 12 in sequence.

Specifically, the exhaust pipe 13 includes an opposite inlet end 131 and an outlet end 132. The inlet end 131 of the exhaust pipe 13 is from the top of the first return pipe 11 (such as the first outlet part 113 or the first barrel 111 close to the first The outer wall of the outlet part 113) penetrates to the outside of the first return pipe 11, and the outlet end 132 of the exhaust pipe 13 is from the bottom of the second return pipe 12 (such as the second outlet part 123 or the second cylinder body 121 close to the second outlet part 123) goes out to the outside of the second air return pipe 12.

It can be understood that the return air direction of the first return air pipe 11 is from the first inlet part 112 to the first outlet part 113, and the return air direction of the second return air pipe 12 is from the second inlet part 122 to the second outlet part 123, thereby achieving exhaust. The air pipe 13 is passed through the first air return pipe 11 and the second air return pipe 12 in sequence, and the exhaust direction of the exhaust pipe 13 is consistent with the return air direction of the first return air pipe 11 and the return air direction of the second return air pipe 12 The directions are opposite to improve the heat transfer effect.

Optionally, the direction of the return air in the first return air pipe 11 is the same or opposite to the direction of the return air in the second return air pipe 12. When the first return air pipe 11 is installed vertically (such as parallel to the height direction of a refrigeration device such as a refrigerator) In this case, the first inlet part 112 and the first outlet part 113 can also be disposed at the top and bottom of the first return pipe 11 respectively. At this time, the inlet end 131 of the exhaust pipe 13 is from the bottom of the first return pipe 11 (such as The first outlet portion 113 or the outer wall of the first barrel 111 (close to the first outlet portion 113 ) penetrates to the outside of the first return air pipe 11 to ensure that the direction of the exhaust gas and the return air in the first return air pipe 11 are opposite. Alternatively, when the second air return pipe 12 is installed vertically (e.g., parallel to the height direction of the refrigeration equipment such as a refrigerator), the second inlet portion 122 and the second outlet portion 123 can also be disposed at the top and bottom of the second air return pipe 12 respectively. bottom, at this time, the outlet end 132 of the exhaust pipe 13 passes from the top of the second return air pipe 12 (such as the second inlet part 122 or the outer wall of the first cylinder body 111 close to the second inlet part 122) to the second return air pipe. 12 to ensure that the directions of exhaust and return air in the second return air pipe 12 are opposite.

Optionally, the exhaust pipe 13 includes a first exhaust portion 133 located on the first cylinder body 111 and a second exhaust portion 134 located on the second cylinder body 121 . The first exhaust portion 133 and the second exhaust portion 134 All wound into a spiral.

By coiling the first exhaust part 133 and the second exhaust part 134 into a spiral shape, the return air in the first exhaust part 133 and the first return air pipe 11 is increased, and the distance between the second exhaust part 134 and the second exhaust part 134 is increased. The contact area of the return air in the second return air pipe 12 improves the heat exchange efficiency between the exhaust pipe 13 and the return air pipe (the first return air pipe 11 and the second return air pipe 12).

Referring to FIG. 3 , optionally, the first exhaust part 133 and the second exhaust part 134 respectively conflict with the inner walls of the first barrel 111 and the second barrel 121 .

By causing the first exhaust part 133 to collide with the inner wall of the first cylinder 111 and the second exhaust part 134 to collide with the inner wall of the second cylinder 121, when the exhaust pipe 13 is impacted by the return air, the first cylinder The inner wall of the body 111 and the inner wall of the second barrel 121 can offset the impact force and not easily cause shaking. Compared with the inner walls of the exhaust pipe 13 and the barrel (the first barrel 111 and the second barrel 121), there is no conflict, and the exhaust When the tube 13 is impacted by the return air, it is easy to shake and hit the inner wall of the first barrel 111 and the inner wall of the second barrel 121, resulting in little noise.

Please refer to Figure 1 again. Optionally, the first air return pipe 11 and the second air return pipe 12 are arranged side by side in the row direction.

Referring to Figure 4, optionally, the first air return pipe 11 and the second air return pipe 12 are arranged side by side in the column direction.

For example, taking the height direction of a refrigeration equipment such as a refrigerator as a reference, the row direction is the direction perpendicular to the height direction, and the column direction is the direction parallel to the height direction.

In this way, there are various arrangements between the first air return pipe 11 and the second air return pipe 12. The first air return pipe 11 and the second return air pipe 12 are arranged side by side in the row direction, which can reduce the distance between the first air return pipe 11 and the second air return pipe 12. Return air pipe 12 is occupied in the column direction The space is conducive to reducing the height of the refrigeration equipment; the first return air pipe 11 and the second return air pipe 12 are arranged side by side in the column direction, which can reduce the space occupied by the first return air pipe 11 and the second return air pipe 12 in the row direction. It is beneficial to reduce the width of the refrigeration equipment in the vertical height direction. According to the installation positions of the first return air pipe 11 and the second return air pipe 12 in the refrigeration equipment and the limitations of the installation space, the first return air pipe 11 and the second return air pipe 12 suitable for the refrigeration equipment can be determined. The arrangement mode between the two return air pipes 12.

Optionally, the first return air pipe 11 and the second return air pipe 12 are connected, and a partition 14 is formed at the joint. The exhaust pipe 13 passes through the partition 14, and its two ends are connected from the top of the first return pipe 11. Extending to the outside of the first air return pipe 11 , and extending from the bottom of the second air return pipe 12 to the outside of the second air return pipe 12 .

Specifically, the first air return pipe 11 and the second air return pipe 12 are connected, which may be the first cylinder body 111 and the second cylinder body 121 are connected, and a partition 14 is formed at the joint, which can separate the first heat exchange space 114 and The second heat exchange spaces 124 are separated to prevent the return air from the first return air pipe 11 and the return air from the second return air pipe 12 from contacting each other and affecting the refrigeration cycle.

The first cylinder body 111 includes a top wall 115 and a side wall 116 that are connected. The second cylinder body 121 includes a bottom wall 125 and a side wall 126 that are connected. The connection between the first cylinder body 111 and the second cylinder body 121 refers to The side wall 116 of the first barrel 111 is connected to the side wall 126 of the second barrel 121 . The first inlet 112 is provided on the side wall 116 of the first barrel 111 . The first inlet 112 is located on the first barrel 111 is provided between the top wall 115 and the partition 14 and close to the partition 14. The first outlet 113 is provided on the top wall 115 of the first return air pipe 11, so that the distance from the first inlet 112 to the first outlet 113 is relatively small. long, increasing the contact area between the return air of the first return air pipe 11 and the exhaust pipe 13; the second inlet portion 122 is provided on the bottom wall 125 of the second return air pipe 12, and the second outlet portion 123 is provided on the second return air pipe 12 The side wall 126 and the second outlet part 123 are located between the bottom wall 125 of the second barrel 121 and the partition 14, and are arranged close to the partition 14, so that the distance from the second inlet part 122 to the second outlet part 123 is longer. , increasing the contact area between the return air of the second return air pipe 12 and the exhaust pipe 13 .

The inlet end 131 of the exhaust pipe 13 passes through the top wall 115 or the first outlet part 113 of the first barrel 111 and extends out of the first return pipe 11. The outlet end 132 of the exhaust pipe 13 passes through the second barrel. The bottom wall 125 or the second inlet portion 122 of 121 extends out of the second air return pipe 12, so that the exhaust gas from the exhaust pipe 13 and the return air from the first return air pipe 11 and the second return air pipe 12 counterflow, thereby improving ventilation. Thermal efficiency.

And the first return air pipe 11 and the second return air pipe 12 are connected, so that the length of the exhaust pipe 13 between the first return air pipe 11 and the second return air pipe 12 can be almost zero, thereby reducing the length of the exhaust pipe 13 length.

Referring to FIGS. 6 to 8 , the refrigeration system 100 includes a compressor 20 , a condenser 30 , a first evaporator 40 , a second evaporator 50 , and the regenerator 10 of any of the above embodiments; an outlet of the first evaporator 40 The refrigerant temperature is higher than the refrigerant temperature at the outlet of the second evaporator 50; the inlet of the condenser 30 is connected with the outlet of the compressor 20, the outlet of the condenser 30 is connected with the inlet end 131 of the exhaust pipe 13, and the exhaust pipe 13 The outlet end 132 is connected with the inlet of the second evaporator 50 ; the first inlet 112 of the first return air pipe 11 is connected with the outlet of the first evaporator 40 , and the first outlet 113 of the first return air pipe 11 is connected with the outlet of the compressor 20 The inlets are connected, the second inlet 122 of the second return air pipe 12 is connected with the outlet of the second evaporator 50 , and the second outlet 123 of the second return air pipe 12 is connected with the inlet of the compressor 20 .

The regenerator 10 of the refrigeration system 100 in the embodiment of the present application is provided with a first return air pipe 11 and a second return air pipe 12, and the exhaust pipe 13 is passed through the first air return pipe 11 and the second return air pipe 12 in sequence, thereby increasing the return air flow rate. While increasing the number of air pipes, the exhaust pipe 13 and the return air pipe are in closer contact, which can improve the heat exchange effect. In addition, the exhaust direction of the exhaust pipe 13 of the present application is opposite to the return air direction of the first return air pipe 11 and the return air direction of the second return air pipe 12, so that the exhaust gas and return air flow countercurrently, thereby further improving the Heat exchange effect.

In addition, by connecting the outlet of the first evaporator 40 with a higher temperature and the outlet of the second evaporator 50 with a lower temperature with the first inlet 112 of the first return air pipe 11 and the second inlet of the second return air pipe 12 respectively. Part 122 is connected so that the exhaust The pipe 13 first exchanges heat with the return air in the first return air pipe 11 with a higher temperature. The temperature of the exhaust gas in the exhaust pipe 13 decreases, and then again exchanges heat with the return air in the second return air pipe 12 with a lower temperature. Heat exchange is performed to further reduce the temperature of the exhaust gas in the exhaust pipe 13, so that the second evaporator 50 connected to the outlet end 132 of the exhaust pipe 13 can receive exhaust gas with a lower temperature, thereby increasing the second evaporation. The refrigeration effect of the device 50 can be applied to refrigeration equipment in the cryogenic field.

The refrigeration system 100 also includes a first capillary tube 61 and a second capillary tube 62 . Both ends of the first capillary tube 61 are connected to the outlet of the condenser 30 and the inlet of the first evaporator 40 respectively. Both ends of the second capillary tube 62 are respectively connected to the outlet end 132 of the exhaust pipe 13 and the inlet of the second evaporator 50 . The inner diameters of the first capillary tube 61 and the second capillary tube 62 are both smaller than or equal to the inner diameter of the exhaust pipe 13 .

The first evaporator 40 is a high-temperature evaporator. The area where the high-temperature evaporator needs to be cooled has a low cooling demand, such as a normal temperature storage room of a refrigerator. Therefore, after the condenser 30 condenses the refrigerant, it does not need to pass through the regenerator 10. After the refrigerant is directly sent to the first capillary tube 61 for throttling to reduce the pressure of the refrigerant, it can be sent to the first evaporator 40 for evaporation, thereby performing refrigeration.

The second evaporator 50 is a cryogenic evaporator. The area where the cryogenic evaporator needs to be refrigerated has a high cooling demand, such as the freezer compartment of a refrigerator. After the condenser 30 condenses the refrigerant, the exhaust gas needs to enter the exhaust pipe 13. Then it enters the regenerator 10 for heat exchange. The exhaust gas first passes through the first return pipe 11 corresponding to the first evaporator 40 for primary heat exchange and cooling, and then passes through the second return pipe 12 corresponding to the second evaporator 50 for a second time. The temperature is lowered, so that the temperature of the exhaust gas is lower when it comes out of the outlet end 132 of the exhaust pipe 13. At this time, the exhaust gas enters the second capillary tube 62 for throttling, thereby reducing the pressure of the exhaust gas, so that low-temperature and low-pressure exhaust gas enters. The second evaporator 50 evaporates. Since the exhaust gas has a lower temperature and pressure, more heat can be absorbed when the exhaust gas evaporates, thereby improving the cooling effect of the second evaporator 50 during evaporation. And by exchanging heat first and then throttling, not only is the energy efficiency higher than that of performing heat exchange and throttling at the same time, but the diameter of the exhaust pipe 13 can be larger than the capillary tube, and the heat exchange efficiency is higher, so that the return pipe The lengths of (the first air return pipe 11 and the second air return pipe 12) can be shortened, thereby reducing costs.

Optionally, the inner diameter of the exhaust pipe 13 may also be equal to the inner diameters of the first capillary tube 61 and the second capillary tube 62 .

That is to say, the exhaust pipe 13 can also play a role in throttling and reducing pressure. After the exhaust gas enters the exhaust pipe 13, it is also throttled while performing heat exchange, thereby shortening the length of the capillary tube. Reduce overall piping length.

When the refrigeration system 100 is working, the compressor 20 compresses the refrigerant to obtain a high-temperature and high-pressure gas refrigerant, and then the high-temperature and high-pressure gas refrigerant flows from the outlet of the compressor 20 into the inlet of the condenser 30 for condensation to obtain a medium temperature The medium-temperature liquid refrigerant (i.e., the exhaust gas in the exhaust pipe 13) flows from the outlet of the condenser 30 through the three-way valve into the inlet of the first capillary tube 61 and the inlet end 131 of the exhaust pipe 13 respectively.

After the medium-temperature liquid refrigerant flowing into the first capillary tube 61 passes through the first capillary tube 61, a medium-temperature and low-pressure liquid refrigerant is obtained. The medium-temperature and low-pressure liquid refrigerant enters the first evaporator 40 for evaporation, and a low-temperature and low-pressure gas refrigerant can be obtained, and flows to the first circuit. The first inlet portion 112 of the gas pipe 11 exchanges heat with the medium-temperature liquid refrigerant in the exhaust pipe 13 in the first return pipe 11 to obtain low-temperature and low-pressure gas refrigerant, and finally enters the compressor 20 from the inlet of the compressor 20, thereby The refrigeration cycle corresponding to the first evaporator 40 is completed.

The medium-temperature liquid refrigerant flowing into the inlet end 131 of the exhaust pipe 13 exchanges heat with the low-temperature and low-pressure gas refrigerant in the first return pipe 11 in the exhaust pipe 13. The medium-temperature liquid refrigerant in the exhaust pipe 13 releases heat, and the temperature decreases for the first time. , forming a low-temperature and high-pressure liquid refrigerant, and then exchanges heat with the low-temperature and low-pressure gas refrigerant in the second return pipe 12 again, and the temperature decreases again, forming a lower-temperature but high-pressure liquid refrigerant. After passing through the exhaust pipe 13, the low-temperature and high-pressure liquid refrigerant The liquid refrigerant enters the second capillary tube 62, and the second capillary tube 62 performs throttling and pressure reduction, thereby generating a low-temperature and low-pressure liquid refrigerant as the second capillary tube 62. The refrigerant of the evaporator 50 allows a better refrigeration effect to be obtained when the second evaporator 50 evaporates the refrigerant. After the second evaporator 50 evaporates the refrigerant, a low-temperature and low-pressure gas refrigerant can be obtained. The low-temperature and low-pressure gas refrigerant flows to the third The second inlet portion 122 of the secondary air return pipe 12 is in phase with the temperature of the medium-temperature liquid refrigerant in the exhaust pipe 13 (the temperature of the medium-temperature liquid refrigerant in the second exhaust portion 134 of the second air return pipe 12 (which is lower than the temperature of the medium-temperature liquid refrigerant in the first exhaust part 133 in the first return pipe 11) to obtain a medium-temperature and low-pressure gas refrigerant, which finally enters the compressor 20 from the inlet of the compressor 20. The compressor 20 The refrigerant is compressed again to obtain high-temperature and high-pressure gas refrigerant, and this cycle is performed to achieve refrigeration. Among them, after heat exchange between the return pipe (the first return pipe 11 and the second exhaust pipe 13) and the exhaust pipe 13, the compressor 20 only needs to compress the medium-temperature and low-pressure gas refrigerant, which reduces the performance requirements for the compressor 20 , so that the compressor 20 with medium and low back pressure can also achieve better refrigeration effect, thereby reducing the cost of the compressor 20 .

Referring to FIG. 9 , the refrigeration equipment 1000 according to the embodiment of the present application includes a housing 200 and a regenerator 10 or a refrigeration system 100 . The regenerator 10 and the refrigeration system 100 are arranged in the casing 200, and the refrigeration system 100 can perform refrigeration.

The refrigeration equipment 1000 may be a refrigerator, an air conditioner, a freezer, a cryogenic equipment, or other equipment used for refrigeration. For a refrigerator, the refrigeration system 100 can cool the interior of the refrigerator to preserve food. For air conditioners, the refrigeration system 100 can cool the space in which the air conditioner is located to achieve cooling of the space.

In addition to being used to install the refrigeration system 100 to protect the refrigeration system 100 , the housing 200 is also used to install other functional components of the refrigeration equipment 1000 such as lighting components, communication components, power components, etc.

In this application, unless otherwise explicitly stated and limited, the term "above" or "below" a first feature on a second feature may include direct contact between the first and second features, or may also include the first and second features. Not in direct contact but through additional characteristic contact between them. Furthermore, the terms "above", "above" and "above" a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than the second feature. “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.

The following disclosure provides many different embodiments or examples for implementing the various structures of the present application. To simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the application. Furthermore, this application may repeat reference numbers and/or reference letters in different examples, such repetition being for the purposes of simplicity and clarity and does not by itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, this application 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.

In the description of this specification, reference to the description of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like is intended to be in conjunction with the description of the embodiments. or examples describe specific features, structures, materials, or characteristics that are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present application have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principles and purposes of the present application. The scope of the application is defined by the claims and their equivalents.

Claims

A regenerator, characterized in that it includes:

first return trachea;

second return trachea;

The exhaust pipe is passed through the first air return pipe and the second air return pipe in sequence. The direction of the exhaust gas in the exhaust pipe is opposite to the direction of the return air in the first air return pipe. The exhaust pipe The direction of the exhaust gas is opposite to the direction of the return air in the second return air pipe.
The regenerator according to claim 1, characterized in that the first air return pipe and the second air return pipe are arranged side by side in the row direction, and the direction of the return air in the first air return pipe is in line with the direction of the second air return pipe. The direction of return air in the return air pipe is the same or opposite.
The regenerator according to claim 1, characterized in that the first air return pipe and the second air return pipe are arranged side by side in a column direction, and the direction of the return air in the first air return pipe is in line with the direction of the second air return pipe. The direction of return air in the return air pipe is the same or opposite.
The regenerator according to claim 1, characterized in that the first return air pipe and the second return air pipe are connected, and a partition is formed at the joint, and the exhaust pipe passes through the partition. plate, and its two ends respectively extend from the top of the first air return pipe to the outside of the first air return pipe, and extend from the bottom of the second air return pipe to the outside of the second air return pipe.
The regenerator according to claim 4, wherein the first air return pipe includes a first barrel, a first inlet and a first outlet, and the first inlet is provided on the first barrel. The side wall of the first cylinder body, the first outlet part is provided on the top wall of the first cylinder body; the second air return pipe includes a second cylinder body, a second inlet part and a second outlet part, the second inlet part The first outlet portion is provided on the side wall of the second barrel, and the first outlet portion is provided on the bottom wall of the barrel.
The regenerator according to claim 1, wherein the exhaust pipe includes a first exhaust part disposed in the first return air pipe and a second row of exhaust pipes disposed in the second return air pipe. Gas part; the first exhaust part and the second exhaust part are both wound in a spiral shape.
The regenerator according to claim 6, characterized in that the first exhaust part is in conflict with the inner wall of the first return air pipe, and the second exhaust part is in conflict with the inner wall of the second return air pipe. .
A refrigeration system, characterized by including:

a first evaporator and a second evaporator, the refrigerant temperature at the outlet of the first evaporator being higher than the refrigerant temperature at the outlet of the second evaporator;

compressor;

Condenser, the inlet of the condenser is connected with the outlet of the compressor, the outlet of the condenser is connected with the inlet end of the exhaust pipe, the outlet end of the exhaust pipe is connected with the second evaporator connected to the entrance; and

The regenerator according to any one of claims 1 to 7, the first inlet of the first return pipe is connected to the outlet of the first evaporator, and the first outlet of the first return pipe is connected to the outlet of the first evaporator. The inlet of the compressor is connected, the second inlet of the second return pipe is connected with the outlet of the second evaporator, and the second outlet of the second return pipe is connected with the inlet of the compressor.
The refrigeration system according to claim 8, further comprising:

A first capillary tube, the two ends of the first capillary tube are respectively connected to the outlet of the condenser and the inlet of the first evaporator;

A second capillary tube. Both ends of the second capillary tube are respectively connected to the outlet end of the exhaust pipe and the inlet of the second evaporator. The inner diameters of the first capillary tube and the second capillary tube are both less than or equal to the second capillary tube. The inner diameter of the exhaust pipe.
A refrigeration equipment, characterized by including:

shell; and

The refrigeration system according to claim 8 or 9, which is arranged in the casing; or the regenerator according to any one of claims 1 to 7, which is arranged in the casing.