Heat exchange system and refrigeration apparatus

Abstract

The application provides a heat exchange system and a refrigeration equipment. The heat exchange system comprises a compressor, a first connecting piece, a first heat exchanger, a throttling and shunting assembly, a second heat exchanger and a second connecting piece. In the refrigeration mode of the heat exchange system, the first interface and the second interface are opened, the third interface is closed, the fourth interface and the fifth interface are opened, and the sixth interface is closed. In the defrosting mode of the heat exchange system, the first interface and the third interface are opened, the second interface is closed, the fourth interface and the sixth interface are opened, and the fifth interface is closed. The opening and closing states of the first interface, the second interface and the third interface on the first connecting piece and the fourth interface, the fifth interface and the sixth interface on the second connecting piece enable the heat exchange system to form two loops, which correspond to the refrigeration mode and the defrosting mode of the heat exchange system respectively, and the refrigeration capacity of the heat exchange system is improved, and the starting rate and the energy consumption are reduced.

Description

Technical Field

[0001] This invention relates to the field of heat exchange system technology, and more specifically to a heat exchange system and a refrigeration device. Background Technology

[0002] In related technologies, traditional refrigerators and other low-temperature refrigeration equipment typically use single-suction compressors and electric heating for defrosting, which results in low refrigeration capacity, high operating rate, and low energy consumption. Summary of the Invention

[0003] The present invention aims to at least solve or improve one of the technical problems of low cooling capacity and low energy consumption in refrigeration equipment such as refrigerators in the prior art.

[0004] Therefore, a heat exchange system is proposed as a first aspect of the present invention.

[0005] A second aspect of the present invention provides a refrigeration device.

[0006] In view of the above, according to a first aspect of the present invention, a heat exchange system is provided, comprising: a compressor, the compressor including a first compression inlet, a second compression inlet, and a compression outlet; a first connector, the first connector including a first interface, a second interface, and a third interface connected in communication, the first interface being connected to the compression outlet; a first heat exchanger connected to the second interface; a throttling and diverting assembly connected to the first heat exchanger, and the throttling and diverting assembly having an outlet connected to the first compression inlet, the throttling and diverting assembly being capable of throttling on both sides of the outlet; a second heat exchanger connected to the throttling and diverting assembly; and a second connector including a fourth interface, a fifth interface, and a sixth interface connected in communication, the fourth interface being connected to the second heat exchanger, the fifth interface being connected to the second compression inlet, and the sixth interface being connected to the third interface; wherein, when the heat exchange system is in cooling mode, the first and second interfaces are open, the third interface is closed, the fourth and fifth interfaces are open, and the sixth interface is closed; when the heat exchange system is in defrosting mode, the first and third interfaces are open, the second interface is closed, the fourth and sixth interfaces are open, and the fifth interface is closed.

[0007] The heat exchange system proposed in this invention includes a compressor, a first connector, a first heat exchanger, a throttling and diverting assembly, a second heat exchanger, and a second connector.

[0008] The compressor is provided with a first compression inlet, a second compression inlet and a compression outlet. The first connector is provided with three interfaces, namely the first interface, the second interface and the third interface. The second connector is provided with three interfaces, namely the fourth interface, the fifth interface and the sixth interface. The throttling and diverting assembly is provided with an air outlet. Specifically, the first compression inlet of the compressor is connected to the fifth interface of the second connector; the second compression inlet of the compressor is connected to the outlet of the throttling and diverting assembly; the compression outlet of the compressor is connected to the first interface of the first connector; the first interface of the first connector is connected to the compression outlet of the compressor; the second interface of the first connector is connected to the first heat exchanger; the third interface of the first connector is connected to the sixth interface of the second connector; one end of the first heat exchanger is connected to the second interface of the first connector; the other end of the first heat exchanger is connected to the throttling and diverting assembly; one end of the throttling and diverting assembly is connected to the first heat exchanger; the other end of the throttling and diverting assembly is connected to the second heat exchanger; the outlet of the throttling and diverting assembly is connected to the second compression inlet of the compressor; one end of the second heat exchanger is connected to the throttling and diverting assembly; the other end of the second heat exchanger is connected to the fourth interface of the second connector; the fourth interface of the second connector is connected to the second heat exchanger; the fifth interface of the second connector is connected to the second compression inlet of the compressor; and the sixth interface of the second connector is connected to the third interface of the first connector.

[0009] Furthermore, by coordinating the opening and closing states of the first, second, and third interfaces on the first connector, and the fourth, fifth, and sixth interfaces on the second connector, the heat exchange system can form two loops, corresponding to the cooling mode and defrosting mode of the heat exchange system, respectively.

[0010] Specifically, when the heat exchange system is in cooling mode, the first and second interfaces on the first connector are open, the third interface on the first connector is closed, the fourth and fifth interfaces on the second connector are open, and the sixth interface on the second connector is closed. In this state, the refrigerant is discharged from the compressor's compression outlet, enters the first heat exchanger through the first and second interfaces of the first connector, and then enters the throttling and diversion assembly for the first throttling. Then, the gaseous refrigerant is discharged through the outlet and enters the first compression inlet of the compressor. The liquid refrigerant continues to undergo a second throttling through the throttling and diversion assembly, and then enters the second heat exchanger. After that, the refrigerant enters the second compression inlet of the compressor through the fourth and fifth interfaces of the second connector, thereby realizing the refrigerant's cooling cycle. Through the two throttling operations, the amount of gaseous refrigerant without latent heat of phase change entering the second heat exchanger is reduced, while the compressor's discharge volume and suction pressure are increased, thereby improving the cooling capacity of the heat exchange system and reducing the operating rate and energy consumption.

[0011] When the heat exchange system is in defrost mode, the first and third ports of the first connector are open, the second port of the first connector is closed, the fourth and sixth ports of the second connector are open, and the fifth port of the second connector is closed. In this state, the refrigerant is discharged from the compressor's compression outlet, enters the sixth port of the second connector through the first and third ports of the first connector, and then enters the second heat exchanger through the fourth port of the second connector. After that, it enters the throttling and diversion assembly. The liquid refrigerant is stored in the throttling and diversion assembly, and the gaseous refrigerant enters the first compression inlet through the outlet of the throttling and diversion assembly. That is, the high-temperature and high-pressure refrigerant discharged by the compressor directly enters the second heat exchanger, thereby achieving defrost and realizing the refrigerant defrost cycle. Furthermore, since the compressor only has the first suction function during the defrost cycle, the refrigerant flow rate circulating in the heat exchange system is relatively small, which ensures that the pressure in the second heat exchanger will not be too high and the pressure difference will not be too large when switching to the cooling mode, ensuring that the cooling effect can be quickly achieved after defrosting mode.

[0012] In addition, the heat exchange system according to the above-described technical solution provided by the present invention may also have the following additional technical features:

[0013] Based on the above technical solution, the throttling and diversion assembly further includes: a first throttling element connected to a first heat exchanger; a gas-liquid separator including a first inlet, a second inlet and an outlet, wherein the first throttling element is connected to the first inlet; and a second throttling element, one end of which is connected to the second inlet and the other end of which is connected to the second heat exchanger.

[0014] In this technical solution, the throttling and diversion assembly is provided with a first through port, a second through port, and an outlet. The other end of the first heat exchanger is connected to the first throttling element; one end of the first throttling element is connected to the first heat exchanger, and the other end of the first throttling element is connected to the first through port of the gas-liquid separator; the first through port of the gas-liquid separator is connected to the first throttling element, and the second through port of the gas-liquid separator is connected to the second throttling element; the outlet of the gas-liquid separator is connected to the second compression inlet of the compressor; one end of the second throttling element is connected to the second through port of the gas-liquid separator, and the other end of the second throttling element is connected to the second heat exchanger; one end of the second heat exchanger is connected to the second throttling element. This structure is simple and easy to manufacture.

[0015] Based on any of the above technical solutions, the first connector further includes: a first body, a first interface, a second interface and a third interface disposed on the first body; a first switch disposed on the first interface for controlling the opening and closing of the first interface; a second switch disposed on the second interface for controlling the opening and closing of the second interface; and a third switch disposed on the third interface for controlling the opening and closing of the third interface.

[0016] In this technical solution, the first connector includes a first body, a flow channel is provided inside the first body, and the flow channel forms three interfaces on the first body: a first interface, a second interface, and a third interface. The first body is provided with three switches, namely the first switch, the second switch, and the third switch.

[0017] The system comprises the following: a first switch is located at the first interface, and opening and closing the first switch controls the opening and closing of the first interface; when the first switch is open, the first interface is open and the medium can flow through it; when the first switch is closed, the first interface is closed and the medium cannot flow through it. Similarly, a second switch is located at the second interface, and opening and closing the second switch controls the opening and closing of the second interface; when the second switch is open, the second interface is open and the medium can flow through it; when the second switch is closed, the second interface is closed and the medium cannot flow through it. Finally, a third switch is located at the third interface, and opening and closing the third switch controls the opening and closing of the third interface; when the third switch is open, the third interface is open and the medium can flow through it; when the third switch is closed, the third interface is closed and the medium cannot flow through it.

[0018] Furthermore, the state of the first connector can be controlled by controlling the first switch, the second switch, and the third switch. This structure is simple, easy to implement, and the control process runs stably.

[0019] Based on any of the above technical solutions, the first component is a three-way pipe.

[0020] In this technical solution, the first main body is a three-way pipe, and the first interface, the second interface and the third interface are the three ports of the three-way pipe.

[0021] Based on any of the above technical solutions, the second connector further includes: a second body, the second body including a fourth interface, a fifth interface and a sixth interface; a fourth switch, disposed on the fourth interface, for controlling the opening and closing of the fourth interface; a fifth switch, disposed on the fifth interface, for controlling the opening and closing of the fifth interface; and a sixth switch, disposed on the sixth interface, for controlling the opening and closing of the sixth interface.

[0022] In this technical solution, the second connector includes a second body, a flow channel is provided inside the second body, and the flow channel forms three interfaces on the second body: a fourth interface, a fifth interface, and a sixth interface. The second body is provided with three switches, namely the fourth switch, the fifth switch, and the sixth switch.

[0023] The fourth switch is located at the fourth interface. Opening and closing the fourth switch controls the opening and closing of the fourth interface. When the fourth switch is open, the fourth interface is open, allowing the medium to flow through it; when the fourth switch is closed, the fourth interface is closed, preventing the medium from flowing through it. Similarly, the fifth switch is located at the fifth interface. Opening and closing the fifth switch controls the opening and closing of the fifth interface. When the fifth switch is open, the fifth interface is open, allowing the medium to flow through it; when the fifth switch is closed, the fifth interface is closed, preventing the medium from flowing through it. Finally, the sixth switch is located at the sixth interface. Opening and closing the sixth switch controls the opening and closing of the sixth interface. When the sixth switch is open, the sixth interface is open, allowing the medium to flow through it; when the sixth switch is closed, the sixth interface is closed, preventing the medium from flowing through it.

[0024] Furthermore, the state of the second connector can be controlled by controlling the fourth, fifth, and sixth switches. This structure is simple, easy to implement, and the control process runs stably.

[0025] Based on any of the above technical solutions, the second main component is a three-way pipe.

[0026] In this technical solution, the second main body is a three-way pipe, and the fourth, fifth and sixth interfaces are the three ports of the three-way pipe.

[0027] Based on any of the above technical solutions, the heat exchange system further includes: a first connecting pipe, a fourth interface and a second heat exchanger connected through the first connecting pipe, and the first connecting pipe and the second throttling element being fitted together.

[0028] In this technical solution, the heat exchange system also includes a first connector, a first connecting pipe is connected between the fourth interface of the second connector and the second heat exchanger, and the first connecting pipe and the second throttling element are in contact.

[0029] Furthermore, in defrost mode, the refrigerant absorbs heat from the first connecting pipe while being throttled and depressurized by the second throttling element, thus turning the refrigerant into a low-pressure gaseous state. It then absorbs heat through the second connecting pipe between the compressor and the gas-liquid separator to ensure that the refrigerant enters the compressor's first compression inlet as a superheated gas. Since the compressor only has the first compression inlet functioning in defrost mode, the refrigerant flow rate circulating in the heat exchange system is relatively small, which ensures that the pressure in the second heat exchanger will not be too high. As a result, after switching to cooling mode, the cooling operation can proceed more smoothly.

[0030] Based on any of the above technical solutions, the second throttling element is further defined as a second capillary tube.

[0031] In this technical solution, the second throttling element is a second capillary tube, which allows the second capillary tube and the first connecting tube to have a longer contact length, enabling the refrigerant in the second throttling element to better absorb the heat in the first connecting tube.

[0032] Based on any of the above technical solutions, the first throttling element is further defined as a first capillary tube.

[0033] In this technical solution, the first throttling element is the first capillary tube.

[0034] Based on any of the above technical solutions, the heat exchange system further includes: a first filter element, and the first heat exchanger and the throttling and diversion assembly are connected through the first filter element.

[0035] In this technical solution, the heat exchange system also includes a first filter element disposed between the first heat exchanger and the throttling and diverting component. When the heat exchange system is in cooling mode, the refrigerant passes through the first heat exchanger, is filtered by the first filter element, and then enters the throttling and diverting component. Since the passage area of ​​the throttling and diverting component is small, the first filter element is set to filter the refrigerant, thereby reducing the risk of the first throttling element being blocked.

[0036] Based on any of the above technical solutions, the heat exchange system further includes: a second filter element, and the second heat exchanger and the throttling and diversion assembly are connected through the second filter element.

[0037] In this technical solution, the heat exchange system also includes a second filter element disposed between the second heat exchanger and the throttling and diverting component. Thus, when the heat exchange system is in defrosting mode, the refrigerant passes through the second heat exchanger, is filtered by the second filter element, and then enters the throttling and diverting component. Since the passage area of ​​the throttling and diverting component is small, the second filter element is set to filter the refrigerant, thereby reducing the risk of the second throttling component being blocked.

[0038] Based on any of the above technical solutions, the heat exchange system further includes: a first fan, which is configured corresponding to the first heat exchanger; and a second fan, which is configured corresponding to the second heat exchanger.

[0039] In this technical solution, the heat exchange system also includes a first fan corresponding to the first heat exchanger, which can accelerate the airflow through the first heat exchanger and improve the heat exchange effect of the first heat exchanger.

[0040] The heat exchange system also includes a second fan corresponding to the second heat exchanger, which can accelerate the airflow through the second heat exchanger and improve the heat exchange effect of the second heat exchanger.

[0041] Based on any of the above technical solutions, further, the first heat exchanger is a condenser and the second heat exchanger is an evaporator.

[0042] In this technical solution, the first heat exchanger is a condenser, and the second heat exchanger is an evaporator.

[0043] Based on any of the above technical solutions, the compressor further includes: a third body; a first suction pipe connected to the third body, with a first compression inlet located in the first suction pipe; a second suction pipe connected to the third body, with a second compression inlet located in the second suction pipe; and an exhaust pipe connected to the third body, with a compression outlet located in the exhaust pipe.

[0044] In this technical solution, the compressor includes a third body and a first suction pipe, a second suction pipe, and an exhaust pipe disposed on the third body. The first suction pipe is disposed on the first suction pipe, the second suction pipe is disposed on the second suction pipe, and the compression outlet is disposed on the exhaust pipe. The compressor is connected to the first suction pipe and the second connecting piece, the compressor is connected to the gas-liquid separator through the second suction pipe, and the compressor is connected to the first connecting piece through the exhaust pipe, thereby facilitating the assembly of the heat exchange system.

[0045] Based on any of the above technical solutions, the compressor further includes: a process tube, located in the third main body.

[0046] In this technical solution, the compressor also includes a process pipe installed in the third main body. The process pipe can be used for evacuating the heat exchange equipment and injecting refrigerant into the heat exchange system.

[0047] According to a second aspect of the present invention, a refrigeration device is provided, comprising: a heat exchange system as described in any of the above-described technical solutions.

[0048] The refrigeration equipment proposed in this invention includes the heat exchange system proposed in any of the above technical solutions, and therefore has all the beneficial effects of the heat exchange system proposed in any of the above technical solutions, which will not be described in detail here.

[0049] Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention. Attached Figure Description

[0050] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0051] Figure 1 This diagram illustrates a heat exchange system in cooling mode according to an embodiment of the present invention.

[0052] Figure 2 This diagram illustrates a heat exchange system in defrost mode according to an embodiment of the present invention.

[0053] Figure 3A schematic diagram of a compressor in a heat exchange system provided in one embodiment of the present invention is shown;

[0054] Figure 4 A cross-sectional view of a first connector in a heat exchange system according to an embodiment of the present invention is shown.

[0055] Figure 5 This diagram shows a cross-sectional view of a second connector in a heat exchange system provided in one embodiment of the present invention.

[0056] in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0057] 100 Heat exchange system, 110 Compressor, 112 Third main body, 114 First suction pipe, 116 Second suction pipe, 118 Discharge pipe, 120 First compression inlet, 122 Second compression inlet, 124 Compression outlet, 126 Process pipe, 130 First connector, 132 First main body, 134 First interface, 136 Second interface, 138 Third interface, 140 First switch, 142 Second switch, 144 Third switch, 150 Throttling and diversion assembly, 152 First throttling element, 154 Gas-liquid Separator, 156 First inlet, 158 Second inlet, 160 Outlet, 162 Second throttling element, 180 Second heat exchanger, 190 Second connector, 192 Second main body, 194 Fourth interface, 196 Fifth interface, 198 Sixth interface, 200 Fourth switch, 202 Fifth switch, 204 Sixth switch, 210 First connecting pipe, 220 Second connecting pipe, 230 First filter element, 240 Second filter element, 250 First fan, 260 Second fan, 270 First heat exchanger. Detailed Implementation

[0058] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0059] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0060] The following reference Figures 1 to 5 This describes a heat exchange system 100 and a refrigeration device provided according to some embodiments of the present invention.

[0061] like Figure 1 and Figure 2As shown, the present invention provides a heat exchange system 100, comprising: a compressor 110, the compressor 110 including a first compression inlet, a second compression inlet and a compression outlet; a first connector 130, the first connector 130 including a first interface, a second interface and a third interface connected in communication, the first interface being connected to the compression outlet; a first heat exchanger 270 connected to the second interface; a throttling and diverting assembly 150 connected to the first heat exchanger 270, and the throttling and diverting assembly 150 having an outlet connected to the first compression inlet, the throttling and diverting assembly 150 being able to throttle on both sides of the outlet; a second heat exchanger 180, and a throttling and diverting assembly 190 connected to the first heat exchanger 270. The flow splitter assembly 150 is connected; the second connector 190 includes a fourth, fifth, and sixth interface that are connected. The fourth interface is connected to the second heat exchanger 180, the fifth interface is connected to the second compression inlet, and the sixth interface is connected to the third interface. When the heat exchange system 100 is in cooling mode, the first and second interfaces are open, the third interface is closed, the fourth and fifth interfaces are open, and the sixth interface is closed. When the heat exchange system 100 is in defrost mode, the first and third interfaces are open, the second interface is closed, the fourth and sixth interfaces are open, and the fifth interface is closed.

[0062] The heat exchange system 100 provided by the present invention includes a compressor 110, a first connector 130, a first heat exchanger 270, a throttling and diversion assembly 150, a second heat exchanger 180, and a second connector 190.

[0063] The compressor 110 is provided with a first compression inlet, a second compression inlet, and a compression outlet. The first connector 130 has three interfaces: a first interface, a second interface, and a third interface. The second connector 190 has three interfaces: a fourth interface, a fifth interface, and a sixth interface. The throttling and diverting assembly 150 has an outlet. Specifically, the first compression inlet of the compressor 110 is connected to the fifth interface of the second connector 190; the second compression inlet of the compressor 110 is connected to the outlet of the throttling and diverting assembly 150; the compression outlet of the compressor 110 is connected to the first interface of the first connector 130; the first interface of the first connector 130 is connected to the compression outlet of the compressor 110; the second interface of the first connector 130 is connected to the first heat exchanger 270; the third interface of the first connector 130 is connected to the sixth interface of the second connector 190; one end of the first heat exchanger 270 is connected to the second interface of the first connector 130; and the other end of the first heat exchanger 270 is connected to the throttling and diverting assembly 190. 50 are connected; one end of the throttling and diverting assembly 150 is connected to the first heat exchanger 270, and the other end of the throttling and diverting assembly 150 is connected to the second heat exchanger 180. The outlet of the throttling and diverting assembly 150 is connected to the second compression inlet of the compressor 110; one end of the second heat exchanger 180 is connected to the throttling and diverting assembly 150, and the other end of the second heat exchanger 180 is connected to the fourth interface of the second connector 190; the fourth interface of the second connector 190 is connected to the second heat exchanger 180, the fifth interface of the second connector 190 is connected to the second compression inlet of the compressor 110, and the sixth interface of the second connector 190 is connected to the third interface of the first connector 130.

[0064] Furthermore, by coordinating the opening and closing states of the first, second, and third interfaces on the first connector 130, and the fourth, fifth, and sixth interfaces on the second connector 190, the heat exchange system 100 can form two loops, corresponding to the cooling mode and defrosting mode of the heat exchange system 100, respectively.

[0065] Specifically, when the heat exchange system 100 is in cooling mode, the first and second ports on the first connector 130 are open, the third port on the first connector 130 is closed, the fourth and fifth ports on the second connector 190 are open, and the sixth port on the second connector 190 is closed. In this state, the refrigerant is discharged from the compression outlet of the compressor 110, enters the first heat exchanger 270 through the first and second ports of the first connector 130, then enters the throttling and diversion assembly 150 for the first throttling, and then is discharged as gaseous refrigerant through the outlet. The gas enters the first compression inlet of the compressor 110. The liquid refrigerant undergoes a second throttling process through the throttling and diversion component 150. After that, the refrigerant enters the second heat exchanger 180. Then, the refrigerant enters the second compression inlet of the compressor 110 through the fourth and fifth interfaces of the second connector 190, thereby realizing the refrigeration cycle of the refrigerant. Through the two throttling processes, the amount of gaseous refrigerant without latent heat of phase change entering the second heat exchanger 180 is reduced. At the same time, the discharge volume of the compressor 110 is increased and the suction pressure is improved, thereby enhancing the cooling capacity of the heat exchange system 100 and reducing the operating rate and energy consumption.

[0066] When the heat exchange system 100 is in defrost mode, the first and third ports of the first connector 130 are open, the second port of the first connector 130 is closed, the fourth and sixth ports of the second connector 190 are open, and the fifth port of the second connector 190 is closed. In this state, the refrigerant is discharged from the compression outlet of the compressor 110, enters the sixth port of the second connector 190 through the first and third ports of the first connector 130, then enters the second heat exchanger 180 through the fourth port of the second connector 190, and finally enters the throttling and diversion assembly 150. The gaseous refrigerant is stored in the throttling and diversion assembly 150. The gaseous refrigerant enters the first compression inlet through the outlet of the throttling and diversion assembly 150. That is, the high-temperature and high-pressure refrigerant discharged by the compressor 110 directly enters the second heat exchanger 180, thereby achieving defrosting and realizing the defrosting cycle of the refrigerant. Furthermore, since the compressor 110 only has the first suction function during the defrosting cycle, the refrigerant flow rate circulating in the heat exchange system 100 is relatively small, which ensures that the pressure in the second heat exchanger 180 will not be too high and the pressure difference will not be too large when switching to the cooling mode, ensuring that the cooling effect can be quickly achieved after the defrosting mode is activated.

[0067] like Figure 1 and Figure 2As shown, in one possible embodiment of the present invention, the heat exchange system 100 includes a compressor 110, a first connector 130, a first heat exchanger 270, a first throttling element 152, a gas-liquid separator 154, a second throttling element 162, a second heat exchanger 180, and a second connector 190. The first connector 130 and the second connector 190 each have three interfaces, thereby enabling the entire heat exchange system 100 to present two circulation loops, corresponding to the cooling mode and defrosting mode of the heat exchange equipment, respectively.

[0068] Specifically, the compressor 110 has a first compression inlet 120, a second compression inlet 122, and a compression outlet 124. The first compression inlet 120 and the second compression inlet 122 are used to recover refrigerant, and the compression outlet 124 is used to discharge refrigerant, thereby providing power for the circulation of refrigerant.

[0069] The first connector 130 has a first interface 134, a second interface 136, and a third interface 138, and the first interface 134, the second interface 136, and the third interface 138 are connected. The first interface 134 can be opened and closed. When the first interface 134 is open, refrigerant can pass through the first interface 134. When the first interface 134 is closed, refrigerant cannot pass through the first interface 134. The second interface 136 can be opened and closed. When the second interface 136 is open, refrigerant can pass through the second interface 136. When the second interface 136 is closed, refrigerant cannot pass through the second interface 136. The third interface 138 can be opened and closed. When the third interface 138 is open, refrigerant can pass through the third interface 138. When the third interface 138 is closed, refrigerant cannot pass through the third interface 138.

[0070] The first heat exchanger 270 has a first heat exchange port and a second heat exchange port.

[0071] The first throttling component 152 has a first flow port and a second flow port.

[0072] The gas-liquid separator 154 has a first inlet 156, a second inlet 158, and an outlet 160. Refrigerant can enter the gas-liquid separator 154 through the first inlet 156, and then the gaseous refrigerant is discharged through the outlet 160, while the liquid refrigerant is discharged through the second inlet 158. Refrigerant can also enter the gas-liquid separator 154 through the second inlet 158, and then the gaseous refrigerant is discharged through the outlet 160. Liquid refrigerant can be stored in the gas-liquid separator 154.

[0073] The second throttling component 162 has a third flow port and a fourth flow port.

[0074] The second heat exchanger 180 has a third heat exchange port and a fourth heat exchange port.

[0075] The second connector 190 has a fourth interface 194, a fifth interface 196, and a sixth interface 198, and these interfaces are connected. The fourth interface 194 can be opened and closed. When the fourth interface 194 is open, refrigerant can pass through the fourth interface 194; when the fourth interface 194 is closed, refrigerant cannot pass through the fourth interface 194. The fifth interface 196 can be opened and closed. When the fifth interface 196 is open, refrigerant can pass through the fifth interface 196; when the fifth interface 196 is closed, refrigerant cannot pass through the fifth interface 196. The sixth interface 198 can be opened and closed. When the sixth interface 198 is open, refrigerant can pass through the sixth interface 198; when the sixth interface 198 is closed, refrigerant cannot pass through the sixth interface 198.

[0076] Furthermore, the compression outlet 124 of the compressor 110 is connected to the first interface 134 of the first connector 130, the first compression inlet 120 of the compressor 110 is connected to the outlet 160 of the gas-liquid separator 154, the second compression inlet 122 of the compressor 110 is connected to the fifth interface 196 of the second connector 190; the first interface 134 of the first connector 130 is connected to the compression outlet 124 of the compressor 110, and the second interface 136 of the first connector 130 is connected to the first heat exchange port of the first heat exchanger 270. The first connector 130's third interface 138 and the second connector 190's sixth interface 198 are connected; the first heat exchange port of the first heat exchanger 270 is connected to the second interface 136 of the first connector 130, and the second heat exchange port of the first heat exchanger 270 is connected to the first throttling port of the first throttling element 152; the first throttling port of the first throttling element 152 is connected to the second heat exchange port of the first heat exchanger 270, and the second throttling port of the first throttling element 152 is connected to the first through port 156 of the gas-liquid separator 154. The first port 156 of the gas-liquid separator 154 is connected to the second port of the first throttling element 152; the second port 158 ​​of the gas-liquid separator 154 is connected to the third port of the second throttling element 162; the outlet 160 of the gas-liquid separator 154 is connected to the first compression inlet 120 of the compressor 110; the third port of the second throttling element 162 is connected to the second port 158 ​​of the gas-liquid separator 154; the fourth port of the second throttling element 162 is connected to the third heat exchange port of the second heat exchanger 180. The third heat exchange port of the second heat exchanger 180 is connected to the fourth throttling port of the second throttling element 162; the fourth heat exchange port of the second heat exchanger 180 is connected to the fourth interface 194 of the second connector 190; the fourth interface 194 of the second connector 190 is connected to the fourth heat exchange port of the second heat exchanger 180; the fifth interface 196 of the second connector 190 is connected to the second compression inlet 122 of the compressor 110; and the sixth interface 198 of the second connector 190 is connected to the third interface 138 of the first connector 130.

[0077] Among them, such as Figure 1 As shown, Figure 1The middle arrow indicates the direction of refrigerant flow. When the heat exchange system 100 is in cooling mode, the first interface 134 and the second interface 136 of the first connector 130 are open, the third interface 138 of the first connector 130 is closed, the fourth interface 194 and the fifth interface 196 of the second connector 190 are open, and the sixth interface 198 of the second connector 190 is closed. When the compressor 110 is working, the refrigerant is discharged from the compression outlet 124 of the compressor 110 and enters the first connector 130. Since the third interface 138 is closed, the refrigerant flows directly to the first heat exchanger 270. The refrigerant flows out of the first heat exchanger 270 and enters the first throttling device 152 for the first throttling. Then it enters the gas-liquid separator 154 for gas-liquid separation. The gaseous refrigerant enters the first compression inlet 120 of the compressor 110, and the liquid refrigerant enters the second throttling device 162 for the second throttling. Then the refrigerant enters the second heat exchanger 180, and then the refrigerant in the second heat exchanger 180 enters the second connector 190. Since the third interface 138 of the second connector 190 is closed, the refrigerant directly enters the second compression inlet 122 of the compressor 110.

[0078] like Figure 2 As shown, Figure 2 The middle arrow indicates the direction of refrigerant flow. When the heat exchange system 100 is in defrost mode, the first port 134 and the third port 138 of the first connector 130 are open, the second port 136 of the first connector 130 is closed, the fourth port 194 and the sixth port 198 of the second connector 190 are open, and the fifth port 196 of the second connector 190 is closed. When the compressor 110 is working, the refrigerant is discharged from the compression outlet 124 of the compressor 110 and enters the first connector 130. Since the second interface 136 is closed, the refrigerant flows directly to the second connector 190. Since the fifth interface 196 of the second connector 190 is closed, the refrigerant flows directly to the second heat exchanger 180. Then the refrigerant is discharged from the second heat exchanger 180 and flows to the second throttling device 162. After that, the refrigerant enters the gas-liquid separator 154. The gaseous refrigerant enters the first compression inlet 120 of the compressor 110 through the gas outlet 160, and the liquid refrigerant is stored in the gas-liquid separator 154.

[0079] The heat exchange system 100 provided by the present invention includes a compressor 110, a first connector 130, a first heat exchanger 270, a first throttling element 152, a gas-liquid separator 154, a second throttling element 162, a second heat exchanger 180, and a second connector 190.

[0080] The compressor 110 is provided with a first compression inlet 120, a second compression inlet 122 and a compression outlet 124. The first connector 130 is provided with three interfaces, namely the first interface 134, the second interface 136 and the third interface 138. The second connector 190 is provided with three interfaces, namely the fourth interface 194, the fifth interface 196 and the sixth interface 198. The gas-liquid separator 154 is provided with a first passage port 156, a second passage port 158 ​​and an outlet port 160. Specifically, the first compression inlet 120 of the compressor 110 is connected to the fifth interface 196 of the second connector 190; the second compression inlet 122 of the compressor 110 is connected to the outlet 160 of the gas-liquid separator 154; the compression outlet 124 of the compressor 110 is connected to the first interface 134 of the first connector 130; the first interface 134 of the first connector 130 is connected to the compression outlet 124 of the compressor 110; the second interface 136 of the first connector 130 is connected to the first heat exchanger 270; the third interface 138 of the first connector 130 is connected to the sixth interface 198 of the second connector 190; one end of the first heat exchanger 270 is connected to the second interface 136 of the first connector 130; the other end of the first heat exchanger 270 is connected to the first throttling element 152; one end of the first throttling element 152 is connected to the first heat exchanger 270; the other end of the first throttling element 152 is connected to the first passage of the gas-liquid separator 154. The gas-liquid separator 154 is connected to the first port 156 and the first throttling element 152; the gas-liquid separator 154 is connected to the second port 158 ​​and the second throttling element 162; the gas outlet 160 of the gas-liquid separator 154 is connected to the second compression inlet 122 of the compressor 110; one end of the second throttling element 162 is connected to the second port 158 ​​of the gas-liquid separator 154; the other end of the second throttling element 162 is connected to the second heat exchanger 180. One end of the second heat exchanger 180 is connected to the second throttling element 162, and the other end of the second heat exchanger 180 is connected to the fourth interface 194 of the second connector 190. The fourth interface 194 of the second connector 190 is connected to the second heat exchanger 180, the fifth interface 196 of the second connector 190 is connected to the second compression inlet 122 of the compressor 110, and the sixth interface 198 of the second connector 190 is connected to the third interface 138 of the first connector 130.

[0081] Furthermore, by coordinating the opening and closing states of the first interface 134, the second interface 136, and the third interface 138 on the first connector 130, and the fourth interface 194, the fifth interface 196, and the sixth interface 198 on the second connector 190, the heat exchange system 100 can form two loops, corresponding to the cooling mode and the defrosting mode of the heat exchange system 100, respectively.

[0082] Specifically, when the heat exchange system 100 is in cooling mode, the first port 134 and the second port 136 on the first connector 130 are open, the third port 138 on the first connector 130 is closed, the fourth port 194 and the fifth port 196 on the second connector 190 are open, and the sixth port 198 on the second connector 190 is closed. In this state, the refrigerant is discharged from the compression outlet 124 of the compressor 110, enters the first heat exchanger 270 through the first port 134 and the second port 136 of the first connector 130, and then enters the first throttling device 152 for the first throttling. Then, it undergoes gas-liquid separation through the gas-liquid separator 154, and the gaseous refrigerant exits through the gas outlet. The liquid refrigerant enters the first compression inlet 120 of the compressor 110 through the second port 158 ​​of the gas-liquid separator 154 and enters the second throttling device 162, thus achieving a second throttling. After that, the refrigerant enters the second heat exchanger 180, and then enters the second compression inlet 122 of the compressor 110 through the fourth port 194 and the fifth port 196 of the second connector 190, thus realizing the refrigeration cycle of the refrigerant. In this way, the two throttling processes reduce the amount of gaseous refrigerant without latent heat of phase change entering the second heat exchanger 180, while increasing the discharge volume of the compressor 110 and increasing the suction pressure, thereby improving the cooling capacity of the heat exchange system 100 and reducing the operating rate and energy consumption.

[0083] When the heat exchange system 100 is in defrost mode, the first port 134 and the third port 138 of the first connector 130 are open, the second port 136 of the first connector 130 is closed, the fourth port 194 and the sixth port 198 of the second connector 190 are open, and the fifth port 196 of the second connector 190 is closed. In this state, the refrigerant is discharged from the compression outlet 124 of the compressor 110, enters the sixth port 198 of the second connector 190 through the first port 134 and the third port 138 of the first connector 130, then enters the second heat exchanger 180 through the fourth port 194 of the second connector 190, then enters the second throttling element 162, and then enters the gas-liquid separator 154 through the second through port 158. The liquid refrigerant is stored in the gas-liquid separator 154, and the gaseous refrigerant enters the first compression inlet 120 through the outlet 160 of the gas-liquid separator 154, that is, the compressor. The high-temperature, high-pressure refrigerant discharged from compressor 110 directly enters the second heat exchanger 180, thereby achieving defrosting and realizing the refrigerant defrosting cycle. Furthermore, since compressor 110 only has the first suction function during the defrosting cycle, the refrigerant flow rate circulating in the heat exchange system 100 is relatively small, which ensures that the pressure in the second heat exchanger 180 is not too high and the pressure difference is not too large when switching to the cooling mode, ensuring that the cooling effect can be quickly achieved after defrosting. After being throttled by the second throttling element 162, the refrigerant evaporation pressure and evaporation temperature are low. By absorbing heat from the first connecting pipe 210 and the outside, the refrigerant can be kept in an overheated gaseous state, reducing the possibility of liquid being carried in the suction of compressor 110. Moreover, this reverse defrosting cycle can improve defrosting efficiency, reduce energy consumption, reduce the temperature difference between the freezer compartment and the refrigeration equipment, and extend the food preservation period. The low-temperature, low-pressure refrigerant does not flow through the first heat exchanger 270, avoiding condensation in the refrigeration equipment due to excessively low temperature, thus improving product quality and reliability.

[0084] like Figure 4 As shown, in a possible embodiment of the present invention, the first connector 130 includes a first body 132 and a first switch 140, a second switch 142 and a third switch 144 disposed on the first body 132. The first body 132 has a channel, and the first interface 134, the second interface 136 and the third interface 138 are openings on the first body 132. The first switch 140 is disposed at the first interface 134 and can control the opening and closing of the first interface 134. The second switch 142 is disposed at the second interface 136 and can control the opening and closing of the second interface 136. The third switch 144 is disposed at the third interface 138 and can control the opening and closing of the third interface 138.

[0085] In this embodiment, the first connector 130 includes a first body 132, a flow channel is provided in the first body 132, and the flow channel forms three interfaces on the first body 132: a first interface 134, a second interface 136, and a third interface 138. The first body 132 is provided with three switches, namely the first switch 140, the second switch 142, and the third switch 144.

[0086] The first switch 140 is located at the first interface 134. Opening and closing the first switch 140 controls the opening and closing of the first interface 134. Specifically, when the first switch 140 is open, the first interface 134 is open, allowing the medium to flow through it; when the first switch 140 is closed, the first interface 134 is closed, preventing the medium from flowing through it. The second switch 142 is located at the second interface 136. Opening and closing the second switch 142 controls the opening and closing of the second interface 136. When switch 42 is open, the second interface 136 is open, and the medium can flow through the second interface 136. When switch 142 is closed, the second interface 136 is closed, and the medium cannot flow through the second interface 136. The third switch 144 is set at the third interface 138. Thus, the opening and closing of the third switch 144 can control the opening and closing of the third interface 138. That is, when the third switch 144 is open, the third interface 138 is open, and the medium can flow through the third interface 138. When the third switch 144 is closed, the third interface 138 is closed, and the medium cannot flow through the third interface 138.

[0087] Furthermore, the state of the first connector 130 can be controlled by controlling the first switch 140, the second switch 142 and the third switch 144. This structure is simple, easy to implement, and the control process runs stably.

[0088] Specifically, the heat exchange system 100 also includes a controller. The first switch 140 has a first terminal, the second switch 142 has a second terminal, and the third switch 144 has a third terminal. The first terminal, the second terminal, and the third terminal are all electrically connected to the controller, so that the controller can control the first switch 140, the second switch 142, and the third switch 144.

[0089] like Figure 4 As shown, in one possible embodiment of the present invention, the first body 132 is a three-way pipe.

[0090] In this embodiment, the first body 132 is a three-way pipe, and the first interface 134, the second interface 136 and the third interface 138 are the three ports of the three-way pipe.

[0091] like Figure 5As shown, in a possible embodiment of the present invention, the second connector 190 includes a second body 192 and a fourth switch 200, a fifth switch 202 and a sixth switch 204 disposed on the second body 192. The second body 192 has a channel, and the fourth interface 194, the fifth interface 196 and the sixth interface 198 are openings on the second body 192. The fourth switch 200 is disposed at the fourth interface 194 and can control the opening and closing of the fourth interface 194. The fifth switch 202 is disposed at the fifth interface 196 and can control the opening and closing of the fifth interface 196. The sixth switch 204 is disposed at the sixth interface 198 and can control the opening and closing of the sixth interface 198.

[0092] In this embodiment, the second connector 190 includes a second body 192, a flow channel is provided in the second body 192, and the flow channel forms three interfaces on the second body 192: a fourth interface 194, a fifth interface 196, and a sixth interface 198. The second body 192 is provided with three switches, namely the fourth switch 200, the fifth switch 202, and the sixth switch 204.

[0093] The fourth switch 200 is located at the fourth interface 194. The opening and closing of the fourth switch 200 controls the opening and closing of the fourth interface 194. Specifically, when the fourth switch 200 is open, the fourth interface 194 is open, allowing the medium to flow through it; when the fourth switch 200 is closed, the fourth interface 194 is closed, preventing the medium from flowing through it. The fifth switch 202 is located at the fifth interface 196. The opening and closing of the fifth switch 202 controls the opening and closing of the fifth interface 196. When switch 02 is open, the fifth interface 196 is open, and the medium can flow through the fifth interface 196. When switch 202 is closed, the fifth interface 196 is closed, and the medium cannot flow through the fifth interface 196. Switch 204 is set at the sixth interface 198. Therefore, the opening and closing of switch 204 can control the opening and closing of the sixth interface 198. That is, when switch 204 is open, the sixth interface 198 is open, and the medium can flow through the sixth interface 198. When switch 204 is closed, the sixth interface 198 is closed, and the medium cannot flow through the sixth interface 198.

[0094] Furthermore, the state of the second connector 190 can be controlled by controlling the fourth switch 200, the fifth switch 202 and the sixth switch 204. This structure is simple, easy to implement, and the control process runs stably.

[0095] Specifically, the heat exchange system 100 also includes a controller, a fourth switch 200 having a fourth terminal, a fifth switch 202 having a fifth terminal, and a sixth switch 204 having a sixth terminal. The fourth, fifth, and sixth terminals are all electrically connected to the controller, so that the controller can control the fourth switch 200, the fifth switch 202, and the sixth switch 204.

[0096] like Figure 5 As shown, in one possible embodiment of the present invention, the second body 192 is a three-way pipe.

[0097] In this embodiment, the second body 192 is a three-way conduit, and the fourth interface 194, the fifth interface 196 and the sixth interface 198 are the three ports of the three-way conduit.

[0098] like Figure 1 and Figure 2 As shown, in one possible embodiment of the present invention, the heat exchange system 100 further includes a first connecting pipe 210 connected to the fourth interface 194 of the second connector 190 and the fourth heat exchange port of the second heat exchanger 180.

[0099] In this embodiment, the heat exchange system 100 further includes a first connector 130, a first connecting pipe 210 connecting between the fourth interface 194 of the second connector 190 and the second heat exchanger 180, and the first connecting pipe 210 and the second throttling element 162 are in contact with each other.

[0100] Furthermore, in defrost mode, the refrigerant absorbs heat from the first connecting pipe 210 while being throttled and depressurized by the second throttling device 162, thus turning the refrigerant into a low-pressure gaseous refrigerant. It then absorbs heat through the second connecting pipe 220 between the compressor 110 and the gas-liquid separator 154 to ensure that the refrigerant enters the first compression inlet 120 of the compressor 110 in a superheated gaseous state. Since only the first compression inlet 120 of the compressor 110 is active in defrost mode, the refrigerant flow rate circulating in the heat exchange system 100 is relatively small, which ensures that the pressure in the second heat exchanger 180 will not be too high. As a result, after switching to cooling mode, the cooling operation can be carried out more smoothly.

[0101] Specifically, the first connecting pipe 210 and the second throttling element 162 can be bonded together by welding.

[0102] Since the second throttling device 162 throttles the refrigerant in both cooling and defrosting modes, by attaching the first connecting pipe 210 and the second throttling device 162 together, heat exchange can be performed in both cooling and defrosting modes. This improves the efficiency of the heat exchange system 100, increases its cooling capacity, reduces its operating rate, and lowers its energy consumption.

[0103] As a possible embodiment of the present invention, the second throttling element 162 is a second capillary.

[0104] In this embodiment, the second throttling element 162 adopts a second capillary tube, which allows the second capillary tube and the first connecting tube 210 to have a longer contact length, so that the refrigerant in the second throttling element 162 can better absorb the heat in the first connecting tube 210.

[0105] As a possible embodiment of the present invention, the first throttling element 152 is a first capillary.

[0106] In this embodiment, the first throttling element 152 is a first capillary.

[0107] like Figure 1 and Figure 2 As shown, in one possible embodiment of the present invention, the heat exchange system 100 further includes a first filter element 230 connected between the first heat exchanger 270 and the first throttling element 152. The first filter element 230 includes a first filter port and a second filter port. The first filter port of the first filter element 230 is connected to the second heat exchange port of the first heat exchanger 270, and the second filter port of the first filter element 230 is connected to the first throttling port of the first throttling element 152.

[0108] In this embodiment, the heat exchange system 100 further includes a first filter element 230 disposed between the first heat exchanger 270 and the first throttling element 152. When the heat exchange system 100 is in cooling mode, the refrigerant passes through the first heat exchanger 270, is filtered by the first filter element 230, and then enters the first throttling element 152. Since the passage area of ​​the first throttling element 152 is small, the first filter element 230 is provided to filter the refrigerant, reducing the risk of the first throttling element 152 being blocked.

[0109] like Figure 1 and Figure 2As shown, in one possible embodiment of the present invention, the heat exchange system 100 further includes a second filter element 240 connected between the second heat exchanger 180 and the second throttling element 162. The second filter element 240 includes a third filter port and a fourth filter port. The third filter port of the second filter element 240 is connected to the third heat exchange port of the second heat exchanger 180, and the fourth filter port of the second filter element 240 is connected to the fourth throttling port of the second throttling element 162.

[0110] In this embodiment, the heat exchange system 100 further includes a second filter element 240 disposed between the second heat exchanger 180 and the second throttling element 162. When the heat exchange system 100 is in defrost mode, the refrigerant passes through the second heat exchanger 180, is filtered by the second filter element 240, and then enters the second throttling element 162. Since the passage area of ​​the second throttling element 162 is small, the second filter element 240 is provided to filter the refrigerant, reducing the risk of the second throttling element 162 being blocked.

[0111] like Figure 1 and Figure 2 As shown, as a possible embodiment of the present invention, the heat exchange system 100 further includes a first fan 250 that supplies air to the first heat exchanger 270 and a second fan 260 that supplies air to the second heat exchanger 180.

[0112] In this embodiment, the heat exchange system 100 also includes a first fan 250 corresponding to the first heat exchanger 270, so that the first fan 250 can accelerate the airflow through the first heat exchanger 270 and improve the heat exchange effect of the first heat exchanger 270.

[0113] The heat exchange system 100 also includes a second fan 260 corresponding to the second heat exchanger 180, thereby accelerating the airflow through the second heat exchanger 180 and improving the heat exchange effect of the second heat exchanger 180.

[0114] The heat exchange system 100 includes a controller, a first fan 250 with a first fan terminal, and a second fan 260 with a second fan terminal. The first fan terminal and the second fan terminal are electrically connected to the controller, thereby the controller controls the operation of the first fan 250 and the second fan 260.

[0115] Specifically, when the heat exchange system 100 is applied to refrigeration equipment such as refrigerators, after the second fan 260 is started, the air inside the refrigerator compartment passes through the second heat exchanger 180 at a certain speed, forming forced convection heat exchange, and can blow the cold air of the second heat exchanger 180 into the refrigerator compartment. After the second fan is started, it drives the air outside the refrigerator to pass through the first heat exchanger 270 at a certain speed, forming forced convection heat exchange, and can blow the heat of the first heat exchanger 270 to the outside of the refrigerator. The first fan 250 has a first fan blade, and the second fan 260 has a second fan blade.

[0116] As a possible embodiment of the present invention, the first heat exchanger 270 is a condenser and the second heat exchanger 180 is an evaporator.

[0117] In this embodiment, the first heat exchanger 270 is a condenser and the second heat exchanger 180 is an evaporator.

[0118] like Figure 3 As shown, in a possible embodiment of the present invention, the compressor 110 includes a third body 112 and a first suction pipe 114, a second suction pipe 116 and an exhaust pipe 118 disposed on the third body 112. The first suction pipe 114 is provided with a first compression inlet 120, the second suction pipe 116 is provided with a second compression inlet 122, and the exhaust pipe 118 is provided with a compression outlet 124.

[0119] In this embodiment, the compressor 110 includes a third body 112 and a first suction pipe 114, a second suction pipe 116, and an exhaust pipe 118 disposed on the third body 112. The first suction pipe 114 is disposed on the first suction pipe 114, the second suction pipe 116 is disposed on the second suction pipe 116, and the compression outlet 124 is disposed on the exhaust pipe 118. The compressor 110 is connected to the second connector 190 through the first suction pipe 114, the compressor 110 is connected to the gas-liquid separator 154 through the second suction pipe 116, and the compressor 110 is connected to the first connector 130 through the exhaust pipe 118, thereby facilitating the assembly of the heat exchange system 100.

[0120] The first intake pipe 114, the second intake pipe 116, and the exhaust pipe 118 are welded to the third main body 112.

[0121] like Figure 3 As shown, as a possible embodiment of the present invention, the compressor 110 also includes a process tube 126 disposed on the third body 112.

[0122] In this embodiment, the compressor 110 also includes a process pipe 126 disposed in the third body 112. The process pipe 126 can be used for evacuating the heat exchange equipment and injecting refrigerant into the heat exchange system 100.

[0123] Among them, process pipe 126 is welded to the third main body 112.

[0124] The present invention provides a refrigeration device, including a heat exchange system 100 as provided in any of the above embodiments.

[0125] The refrigeration equipment provided by the present invention includes the heat exchange system 100 as provided in any of the above embodiments, and therefore has all the beneficial effects of the heat exchange system 100 as provided in any of the above embodiments, which will not be described in detail here.

[0126] Specifically, refrigeration equipment can be refrigerators, freezers, or display cases, etc.

[0127] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0128] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or units referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0129] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions 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 one or more embodiments or examples.

[0130] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A heat exchange system, characterized by, The heat exchange system comprises: a compressor comprising a first compression inlet, a second compression inlet and a compression outlet; a first connecting member comprising a first interface, a second interface and a third interface in communication, the first interface being in communication with the compression outlet; a first heat exchanger connected with the second interface; a throttling and distributing assembly connected with the first heat exchanger, the throttling and distributing assembly having a gas outlet in communication with the first compression inlet, the throttling and distributing assembly being capable of throttling on both sides of the gas outlet; a second heat exchanger connected with the throttling and distributing assembly; a second connecting member comprising a fourth interface, a fifth interface and a sixth interface in communication, the fourth interface being connected with the second heat exchanger, the fifth interface being in communication with the second compression inlet, and the sixth interface being in communication with the third interface; wherein, in the case that the heat exchange system is in a refrigeration mode, the first interface and the second interface are open, the third interface is closed, the fourth interface and the fifth interface are open, and the sixth interface is closed; and in the case that the heat exchange system is in a defrosting mode, the first interface and the third interface are open, the second interface is closed, the fourth interface and the sixth interface are open, and the fifth interface is closed.

2. The heat exchange system according to claim 1, wherein The throttling and distributing assembly (150) comprises: a first throttling member connected with the first heat exchanger; a gas-liquid separator comprising a first passing port, a second passing port and the gas outlet, the first throttling member being connected with the first passing port; a second throttling member having one end connected with the second passing port and the other end connected with the second heat exchanger.

3. The heat exchange system of claim 1, wherein, The first connecting member comprises: a first main body, the first interface, the second interface and the third interface being arranged on the first main body; a first switch arranged on the first interface for controlling opening and closing of the first interface; a second switch arranged on the second interface for controlling opening and closing of the second interface; a third switch arranged on the third interface for controlling opening and closing of the third interface.

4. The heat exchange system according to claim 3, wherein: the first main body is a three-way pipeline.

5. The heat exchange system of claim 1, wherein, The second connecting member comprises: a second main body, the fourth interface, the fifth interface and the sixth interface being arranged on the second main body; a fourth switch arranged on the fourth interface for controlling opening and closing of the fourth interface; a fifth switch arranged on the fifth interface for controlling opening and closing of the fifth interface; a sixth switch arranged on the sixth interface for controlling opening and closing of the sixth interface.

6. The heat exchange system according to claim 5, wherein: the second main body is a three-way pipeline.

7. The heat exchange system of claim 2, wherein, The heat exchange system further comprises: a first connecting pipe, the fourth interface and the second heat exchanger being connected through the first connecting pipe, and the first connecting pipe being in abutment with the second throttling member.

8. The heat exchange system according to claim 7, wherein: the second throttling member is a second capillary tube.

9. The heat exchange system according to claim 2, wherein: The first throttling member is a first capillary.

10. The heat exchange system according to any one of claims 1 to 6, wherein Further comprising: A first filter, through which the first heat exchanger and the throttling and distributing assembly are connected.

11. The heat exchange system according to any one of claims 1 to 6, wherein Further comprising: A second filter, through which the second heat exchanger and the throttling and distributing assembly are connected.

12. The heat exchange system according to any one of claims 1 to 6, characterized in that, Further comprising: A first fan, corresponding to the first heat exchanger; A second fan, corresponding to the second heat exchanger.

13. The heat exchange system according to any one of claims 1 to 6, wherein: The first heat exchanger is a condenser, and the second heat exchanger is an evaporator.

14. The heat exchange system according to any one of claims 1 to 6, wherein The compressor comprises: A third body; A first suction pipe connected to the third body, and the first compression inlet is arranged on the first suction pipe; A second suction pipe connected to the third body, and the second compression inlet is arranged on the second suction pipe; An exhaust pipe connected to the third body, and the compression outlet is arranged on the exhaust pipe.

15. The heat exchange system of claim 14, wherein, The compressor further comprises: A process pipe arranged on the third body.

16. A refrigeration appliance characterized by, The heat exchange system according to any one of claims 1 to 15. ​

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