Heat exchange systems and refrigeration equipment

Abstract

The present invention proposes a heat exchange system and refrigeration equipment, wherein the heat exchange system includes: a compressor, a first connecting member, a first heat exchanger, a throttling and diversion assembly, a second heat exchanger, a second connecting member and a valve body; wherein, when the heat exchange system is in a cooling mode, the first interface and the second interface of the first connecting member are opened, the third interface is closed, the fourth interface and the fifth interface of the second connecting member are opened, the sixth interface is closed, and the valve body is closed; wherein, when the heat exchange system is in a defrost mode, the first interface and the third interface of the first connecting member are opened, the second interface is closed, the fourth interface and the sixth interface of the second connecting member are opened, the fifth interface is closed, and the valve body is opened.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange systems, and in particular to a heat exchange system and a refrigeration device. Background Art

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

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

[0004] To this end, a first aspect of the present invention provides a heat exchange system.

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

[0006] In view of this, according to a first aspect of the present invention, the present invention proposes a heat exchange system, comprising: a compressor, the compressor comprising a first compression inlet, a second compression inlet and a compression outlet; a first connecting piece, the first connecting piece comprising a first interface, a second interface and a third interface, the first interface and the compression outlet being connected; a first heat exchanger, being connected to the second interface; a throttling diverter assembly, being connected to the first heat exchanger, and the throttling diverter assembly having an air outlet, the air outlet being connected to the first compression inlet, and the throttling diverter assembly being capable of throttling on both sides of the air outlet; a second heat exchanger, being connected to the throttling diverter assembly; a second connecting piece, the second connecting piece The component includes a fourth interface, a fifth interface and a sixth interface, the fourth interface is connected to the second heat exchanger, the fifth interface is connected to the second compression inlet, and the sixth interface is connected to the third interface; a valve body, one end of which is connected to the air outlet, and the other end is connected to the second compression inlet; wherein, when the heat exchange system is in cooling mode, the first interface and the second interface are opened, the third interface is closed, the fourth interface and the fifth interface are opened, the sixth interface is closed, and the valve body is closed; when the heat exchange system is in defrosting mode, the first interface and the third interface are opened, the second interface is closed, the fourth interface and the sixth interface are opened, the fifth interface is closed, and the valve body is opened.

[0007] The heat exchange system proposed in the present invention includes a compressor, a first connecting member, a first heat exchanger, a throttling and diverting component, a second heat exchanger, a second connecting member and a valve body.

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

[0009] In addition, by coordinating the opening and closing states of the first interface, the second interface and the third interface on the first connecting part, and the fourth interface, the fifth interface and the sixth interface on the second connecting part, as well as the switching state of the valve body, the heat exchange system can form two circuits, corresponding to the cooling mode and the defrosting mode of the heat exchange system respectively.

[0010] Specifically, when the heat exchange system is in cooling mode, the first interface and the second interface on the first connecting member are opened, the third interface on the first connecting member is closed, the fourth interface and the fifth interface on the second connecting member are opened, the sixth interface on the second connecting member is closed, and the valve body is closed. In this state, the refrigerant is discharged from the compression outlet of the compressor, enters the first heat exchanger through the first interface and the second interface of the first connecting member, and then enters the throttling and diversion assembly for the first throttling, and then the gaseous refrigerant is discharged through the air outlet. The gaseous refrigerant enters the first compression inlet of the compressor through the air outlet, and the liquid refrigerant continues to be throttled for the second time through the throttling and diversion assembly. After that, the refrigerant enters the second heat exchanger, and then the refrigerant enters the second compression inlet of the compressor through the fourth interface and the fifth interface of the second connecting member, thereby realizing the refrigeration cycle of the refrigerant. Then, through two throttlings, on the one hand, the gaseous refrigerant without phase change latent heat entering the second heat exchanger is reduced, and at the same time, the exhaust volume of the compressor is increased and the suction pressure is increased, thereby improving the cooling capacity of the heat exchange system, reducing the startup rate and energy consumption.

[0011] When the heat exchange system is in defrost mode, the first interface and the third interface of the first connecting member are opened, the second interface of the first connecting member is closed, the fourth interface and the sixth interface of the second connecting member are opened, the fifth interface of the second connecting member is closed, and the valve body is opened. In this state, the refrigerant is discharged from the compression outlet of the compressor, enters the sixth interface of the second connecting member through the first interface and the third interface of the first connecting member, and then enters the second heat exchanger through the fourth interface of the second connecting member, and then enters the throttling and diverting assembly. The liquid refrigerant is stored in the throttling and diverting assembly, and the gaseous refrigerant is discharged through the air outlet of the throttling and diverting assembly. A part of it enters the compressor through the first compression inlet, and the other part flows through the valve body and enters the compressor through the second compression inlet. That is, the high-temperature and high-pressure refrigerant discharged from the compressor directly enters the second heat exchanger, thereby realizing defrosting, thereby realizing the defrost cycle of the refrigerant, and through the diversion of the gas-liquid separator by the valve body, the suction volume of the compressor is increased, thereby increasing the amount of refrigerant in the system during defrosting, thereby improving the defrosting effect.

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

[0013] On the basis of the above technical solution, further, the valve body is a variable valve to adjust the flow between the air outlet and the second compression inlet in the defrost mode.

[0014] In this technical solution, a variable valve is adopted in the valve body, and thus in the defrost mode, the flow between the air outlet of the gas-liquid separator and the second compression inlet of the compressor can be adjusted, so that the flow between the air outlet of the gas-liquid separator and the second compression inlet of the compressor can be increased or decreased according to the defrost effect of the heat exchange system. That is, when the defrost efficiency is poor, the opening of the valve body is increased, the amount of refrigerant in the heat exchange system is increased, and the defrost speed is improved. When the defrost effect is excessive, the opening of the valve body is reduced. Reducing the opening of the valve body can reduce the flow of refrigerant circulating in the heat exchange system, thereby ensuring 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 refrigeration mode, thereby ensuring that the refrigeration effect can be achieved quickly after the defrost mode.

[0015] On the basis of any of the above technical solutions, it further includes: a temperature detection component for detecting the ambient temperature, electrically connected to the valve body, and the variable valve adjusts the opening of the valve body according to the ambient temperature.

[0016] In this technical solution, the heat exchange system also includes a temperature detection component electrically connected to the valve body, and the variable valve adjusts the opening of the valve body according to the ambient temperature. Specifically, the temperature detection component is used to detect the ambient temperature of the second heat exchanger. When the ambient temperature of the second heat exchanger is lower than the temperature threshold, it is necessary to improve the defrosting effect, thereby increasing the opening of the valve body, and increasing the amount of refrigerant in the heat exchange system, thereby improving the defrosting effect and increasing the defrosting speed. When the ambient temperature of the second heat exchanger is higher than the temperature threshold, it is necessary to reduce the defrosting effect, thereby reducing the opening of the valve body, and reducing the amount of refrigerant in the heat exchange system, to ensure that the cooling effect can be quickly achieved when the heat exchange system switches to cooling mode.

[0017] On the basis of any of the above technical solutions, further, the throttling and diversion assembly includes: a first throttling device, connected to the first heat exchanger; a gas-liquid separator, including a first through port, a second through port and an air outlet, the first throttling device is connected to the first through port; a second throttling device, one end of which is connected to the second through port, and the other end is connected to the second heat exchanger.

[0018] In this technical solution, the throttling and diverting assembly is provided with a first through-port, a second through-port, and an air outlet. The other end of the first heat exchanger is connected to the first throttling member; one end of the first throttling member is connected to the first heat exchanger, and the other end of the first throttling member 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 member, the second through-port of the gas-liquid separator is connected to the second throttling member, and the air outlet of the gas-liquid separator is connected to the second compression inlet of the compressor; one end of the second throttling member is connected to the second through-port of the gas-liquid separator, and the other end of the second throttling member is connected to the second heat exchanger; and one end of the second heat exchanger is connected to the second throttling member. The above structure is simple and easy to produce.

[0019] On the basis of any of the above technical solutions, further, the first connecting member includes: a first main body, a first interface, a second interface and a third interface are arranged on the first main body; a first switch is arranged on the first interface, used to control the opening and closing of the first interface; a second switch is arranged on the second interface, used to control the opening and closing of the second interface; a third switch is arranged on the third interface, used to control the opening and closing of the third interface.

[0020] In this technical solution, the first connecting member includes a first main body, a flow channel is provided in the first main body, the flow channel forms three interfaces on the first main body, namely the first interface, the second interface and the third interface, and three switches are provided on the first main body, namely the first switch, the second switch and the third switch.

[0021] Among them, the first switch is set at the first interface, and the opening and closing of the first switch can control the opening and closing of the first interface, that is, when the first switch is opened, the first interface is opened, and the medium can flow through the first interface; when the first switch is closed, the first interface is closed, and the medium cannot flow through the first interface; the second switch is set at the second interface, and the opening and closing of the second switch can control the opening and closing of the second interface, that is, when the second switch is opened, the second interface is opened, and the medium can flow through the second interface; when the second switch is closed, the second interface is closed, and the medium cannot flow through the second interface; the third switch is set at the third interface, and the opening and closing of the third switch can control the opening and closing of the third interface, that is, when the third switch is opened, the third interface is opened, and the medium can flow through the third interface; when the third switch is closed, the third interface is closed, and the medium cannot flow through the third interface.

[0022] Furthermore, the state of the first connecting member can be controlled by controlling the first switch, the second switch and the third switch. The structure is simple, easy to implement, and the control process runs stably.

[0023] Wherein, the first body is a three-way pipeline.

[0024] On the basis of any of the above technical solutions, further, the first connecting member is a first three-way valve.

[0025] In this technical solution, the first connecting member adopts a first three-way valve, which has a first interface, a second interface and a third interface. In the refrigeration mode, the first interface and the second interface are opened, that is, the first interface and the second interface are connected, and the third interface is closed, that is, the third interface and the first interface are not connected, and the third interface and the second interface are not connected. In the defrost mode, the first interface and the third interface are opened, that is, the first interface and the third interface are connected, and the second interface is closed, that is, the second interface and the first interface are not connected, and the second interface and the third interface are not connected.

[0026] On the basis of any of the above technical solutions, further, the second connecting member includes: a second main body, a fourth interface, a fifth interface and a sixth interface are arranged on the second main body; a fourth switch is arranged on the fourth interface, used to control the opening and closing of the fourth interface; a fifth switch is arranged on the fifth interface, used to control the opening and closing of the fifth interface; a sixth switch is arranged on the sixth interface, used to control the opening and closing of the sixth interface.

[0027] In this technical solution, the second connecting member includes a second main body, a flow channel is provided in the second main body, the flow channel forms three interfaces on the second main body, namely the fourth interface, the fifth interface and the sixth interface, and three switches are provided on the second main body, namely the fourth switch, the fifth switch and the sixth switch.

[0028] Among them, the fourth switch is set at the fourth interface, and the opening and closing of the fourth switch can control the opening and closing of the fourth interface, that is, when the fourth switch is opened, the fourth interface is opened, and the medium can flow through the fourth interface; when the fourth switch is closed, the fourth interface is closed, and the medium cannot flow through the fourth interface; the fifth switch is set at the fifth interface, and the opening and closing of the fifth switch can control the opening and closing of the fifth interface, that is, when the fifth switch is opened, the fifth interface is opened, and the medium can flow through the fifth interface; when the fifth switch is closed, the fifth interface is closed, and the medium cannot flow through the fifth interface; the sixth switch is set at the sixth interface, and the opening and closing of the sixth switch can control the opening and closing of the sixth interface, that is, when the sixth switch is opened, the sixth interface is opened, and the medium can flow through the sixth interface; when the sixth switch is closed, the sixth interface is closed, and the medium cannot flow through the sixth interface.

[0029] Furthermore, the state of the second connecting member can be controlled by controlling the fourth switch, the fifth switch and the sixth switch. This structure is simple, easy to implement, and the control process runs stably.

[0030] Among them, the second body is a three-way pipeline.

[0031] On the basis of any of the above technical solutions, further, the second connecting member is a first three-way valve.

[0032] In this technical solution, the second connecting member adopts a second three-way valve, and the second three-way valve has a fourth interface, a fifth interface and a sixth interface. In the refrigeration mode, the fourth interface and the fifth interface are open, that is, the fourth interface and the fifth interface are connected, and the sixth interface is closed, that is, the sixth interface and the fourth interface are not connected, and the sixth interface and the fifth interface are not connected. In the defrost mode, the fourth interface and the sixth interface are open, that is, the fourth interface and the sixth interface are connected, and the fifth interface is closed, that is, the fifth interface and the fourth interface are not connected, and the fifth interface and the sixth interface are not connected.

[0033] On the basis of any of the above technical solutions, it further includes: a first connecting pipe, the fourth interface and the second heat exchanger are connected through the first connecting pipe, and the first connecting pipe and the second throttling member are in contact with each other.

[0034] In this technical solution, the heat exchange system further includes a first connecting pipe, which is connected between the fourth interface of the second connecting member and the second heat exchanger, and the first connecting pipe and the second throttling member are in contact with each other.

[0035] Furthermore, in the defrost mode, the refrigerant absorbs the heat of the first connecting pipe while passing through the second throttle member to reduce the pressure, and then the refrigerant is converted into a low-pressure gaseous refrigerant, thereby improving the heat exchange efficiency of the heat exchange system.

[0036] On the basis of any of the above technical solutions, further, the second throttling member is a second capillary tube.

[0037] In this technical solution, the second throttling member is a second capillary tube, and thus the second capillary tube and the first connecting tube can have a longer fitting length, so that the refrigerant in the second throttling member can better absorb the heat in the first connecting tube.

[0038] On the basis of any of the above technical solutions, further, the first throttling member is a first capillary tube or a first throttle valve.

[0039] In this technical solution, the first throttling element is a first capillary tube, or the first throttling element is a first throttle valve.

[0040] On the basis of any of the above technical solutions, it further includes: a first filter element, and the first heat exchanger and the throttling and diverting assembly are connected through the first filter element.

[0041] In this technical solution, the heat exchange system also includes a first filter element arranged between the first heat exchanger and the throttling diverter assembly. 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 diverter assembly. Since the passing area of the throttling diverter assembly is small, the first filter element is set to filter the refrigerant to reduce the risk of the first throttling element being blocked.

[0042] On the basis of any of the above technical solutions, it further includes: a second filter element, and the second heat exchanger and the throttling and diverting assembly are connected through the second filter element.

[0043] In this technical solution, the heat exchange system also includes a second filter element arranged between the second heat exchanger and the throttling diverter assembly. When the heat exchange system is in defrost mode, the refrigerant passes through the second heat exchanger, is filtered by the second filter element, and then enters the throttling diverter assembly. Since the passing area of the throttling diverter assembly is small, a second filter element is provided to filter the refrigerant to reduce the risk of the second throttling element being blocked.

[0044] On the basis of any of the above technical solutions, it further includes: a first fan, corresponding to the first heat exchanger; and a second fan, corresponding to the second heat exchanger.

[0045] In this technical solution, the heat exchange system also includes a first fan arranged corresponding to the first heat exchanger, so that the first fan can accelerate the airflow flowing through the first heat exchanger and improve the heat exchange effect of the first heat exchanger.

[0046] The heat exchange system also includes a second fan arranged corresponding to the second heat exchanger, so that the second fan can accelerate the airflow flowing through the second heat exchanger and improve the heat exchange effect of the second heat exchanger.

[0047] According to a second aspect of the present invention, the present invention proposes a refrigeration device, comprising: a heat exchange system as proposed in any one of the above technical solutions.

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

[0049] Additional aspects and advantages of the invention will become apparent from the description which follows, or may be learned by practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[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 with reference to the following drawings, in which:

[0051] Figure 1 A schematic diagram showing a heat exchange system provided by one embodiment of the present invention in a cooling mode;

[0052] Figure 2 A schematic diagram showing a heat exchange system provided by one embodiment of the present invention in a defrost mode;

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

[0054] Figure 4 A cross-sectional view showing a first connecting member in a heat exchange system provided by one embodiment of the present invention;

[0055] Figure 5 A cross-sectional view showing a second connecting member in a heat exchange system provided by one embodiment of the present invention;

[0056] Figure 6 A schematic diagram showing the electrical connection relationship between a valve body and a temperature detection component in a heat exchange system provided by one embodiment of the present invention is shown.

[0057] in, Figures 1 to 6 The corresponding relationship between the reference numerals and component names is as follows:

[0058] 100 heat exchange system, 110 compressor, 112 third body, 114 first suction pipe, 116 second suction pipe, 118 exhaust pipe, 120 first compression inlet, 122 second compression inlet, 124 compression outlet, 126 process pipe, 130 first connector, 132 first body, 134 first interface, 136 second interface, 138 third interface, 140 first switch, 142 second switch, 144 third switch, 150 throttling and diverting assembly, 152 first throttling element, 154 gas-liquid separator, 156 first through port, 158 second through port, 160 Air outlet, 162 second throttle element, 180 second heat exchanger, 190 second connecting element, 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, 212 second connecting pipe, 214 third connecting pipe, 230 first filter element, 240 second filter element, 250 first fan, 260 second fan, 270 first heat exchanger, 280 valve body, 282 first switch port, 284 second switch port, 290 temperature detection component, 300 controller. DETAILED DESCRIPTION

[0059] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0060] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0061] Refer to the following Figures 1 to 6 The heat exchange system 100 and the refrigeration equipment provided according to some embodiments of the present invention are described.

[0062] like Figure 1 、 Figure 2 and Figure 6As shown, the present invention provides a heat exchange system 100, comprising: a compressor 110, the compressor 110 including a first compression inlet 120, a second compression inlet 122 and a compression outlet 124; a first connecting member 130, the first connecting member 130 including a first interface 134, a second interface 136 and a third interface 138 connected to each other, the first interface 134 and the compression outlet 124 being connected; a first heat exchanger 270, connected to the second interface 136; a throttling and diverting assembly 150, connected to the first heat exchanger 270, and the throttling and diverting assembly 150 having an air outlet 160, the air outlet 160 being connected to the first compression inlet 120, and the throttling and diverting assembly 150 being capable of throttling on both sides of the air outlet 160; a second heat exchanger 180, connected to the throttling and diverting assembly 150; a second connecting member 190, the second connecting member 190 including a second connecting member 190 connected to each other The fourth interface 194, the fifth interface 196 and the sixth interface 198, the fourth interface 194 is connected to the second heat exchanger 180, the fifth interface 196 is connected to the second compression inlet 122, and the sixth interface 198 is connected to the third interface 138; the valve body 280, one end is connected to the air outlet 160, and the other end is connected to the second compression inlet 122; wherein, when the heat exchange system 100 is in the cooling mode, the first interface 134 and the second interface 136 are opened, the third interface 138 is closed, the fourth interface 194 and the fifth interface 196 are opened, the sixth interface 198 is closed, and the valve body 280 is closed; when the heat exchange system 100 is in the defrost mode, the first interface 134 and the third interface 138 are opened, the second interface 136 is closed, the fourth interface 194 and the sixth interface 198 are opened, the fifth interface 196 is closed, and the valve body 280 is opened.

[0063] The heat exchange system 100 provided by the present invention includes a compressor 110 , a first connecting member 130 , a first heat exchanger 270 , a throttling and diverting assembly 150 , a second heat exchanger 180 , a second connecting member 190 and a valve body 280 .

[0064] Among them, the compressor 110 is provided with a first compression inlet 120, a second compression inlet 122 and a compression outlet 124, the first connecting member 130 is provided with three interfaces, namely the first interface 134, the second interface 136 and the third interface 138, the second connecting member 190 is provided with three interfaces, namely the fourth interface 194, the fifth interface 196 and the sixth interface 198, and the throttling diverter assembly 150 is provided with an air outlet 160. Specifically, the first compression inlet 120 of the compressor 110 is connected to the fifth interface 196 of the second connecting member 190, and is also connected to one end of the valve body 280. The second compression inlet 122 of the compressor 110 is connected to the air outlet 160 of the throttling diverter assembly 150, and the compression outlet 124 of the compressor 110 is connected to the first interface 134 of the first connecting member 130; the first interface 134 of the first connecting member 130 is connected to the compression outlet 124 of the compressor 110, the second interface 136 of the first connecting member 130 is connected to the first heat exchanger 270, and the third interface 138 of the first connecting member 130 is connected to the sixth interface 198 of the second connecting member 190; one end of the first heat exchanger 270 is connected to the second interface 136 of the first connecting member 130, and the other end of the first heat exchanger 270 is connected to the throttling diverter assembly 150; one end of the throttling diverter assembly 150 is connected to the first heat exchanger 270 is connected, the other end of the throttling and diverting assembly 150 is connected to the second heat exchanger 180, the air outlet 160 of the throttling and diverting assembly 150 is connected to the second compression inlet 122 of the compressor 110, and is also connected to the other end of the valve body 280; 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 194 of the second connecting member 190; the fourth interface 194 of the second connecting member 190 is connected to the second heat exchanger 180, the fifth interface 196 of the second connecting member 190 is connected to the second compression inlet 122 of the compressor 110, and the sixth interface 198 of the second connecting member 190 is connected to the third interface 138 of the first connecting member 130; one end of the valve body 280 is connected to the second compression inlet 122 of the compressor 110, and the other end of the valve body 280 is connected to the air outlet 160 of the throttling and diverting assembly 150.

[0065] In addition, in conjunction with the opening and closing states of the first interface 134, the second interface 136 and the third interface 138 on the first connecting member 130, and the fourth interface 194, the fifth interface 196 and the sixth interface 198 on the second connecting member 190, as well as the switching state of the valve body 280, the heat exchange system 100 can form two circuits, corresponding to the cooling mode and the defrosting mode of the heat exchange system 100 respectively.

[0066] Specifically, when the heat exchange system 100 is in cooling mode, the first interface 134 and the second interface 136 on the first connecting member 130 are opened, the third interface 138 on the first connecting member 130 is closed, the fourth interface 194 and the fifth interface 196 on the second connecting member 190 are opened, the sixth interface 198 on the second connecting member 190 is closed, and the valve body 280 is closed. In this state, the refrigerant is discharged from the compression outlet 124 of the compressor 110, passes through the first interface 134 and the second interface 136 of the first connecting member 130, enters the first heat exchanger 270, and then enters the throttling diverter assembly 150 for the first throttling, and then is discharged through the outlet 160 Gaseous refrigerant, the gaseous refrigerant enters the first compression inlet 120 of the compressor 110 through the air outlet 160, and the liquid refrigerant continues to be throttled for the second time through the throttling diversion component 150, and then the refrigerant enters the second heat exchanger 180, and then the refrigerant enters the second compression inlet 122 of the compressor 110 through the fourth interface 194 and the fifth interface 196 of the second connecting member 190, thereby realizing the refrigeration cycle of the refrigerant, and then through two throttling, on the one hand, the gaseous refrigerant without phase change latent heat entering the second heat exchanger 180 is reduced, and at the same time, the exhaust volume of the compressor 110 is increased and the suction pressure is increased, thereby improving the refrigeration capacity of the heat exchange system 100, reducing the startup rate and energy consumption.

[0067] When the heat exchange system 100 is in defrost mode, the first interface 134 and the third interface 138 of the first connecting member 130 are opened, the second interface 136 of the first connecting member 130 is closed, the fourth interface 194 and the sixth interface 198 of the second connecting member 190 are opened, the fifth interface 196 of the second connecting member 190 is closed, and the valve body 280 is opened. In this state, the refrigerant is discharged from the compression outlet 124 of the compressor 110, enters the sixth interface 198 of the second connecting member 190 through the first interface 134 and the third interface 138 of the first connecting member 130, and then enters the second heat exchanger 180 through the fourth interface 194 of the second connecting member 190, and then enters the second heat exchanger 180. The flow diversion component 150 stores liquid refrigerant in the throttling diversion component 150, and the gaseous refrigerant is discharged through the outlet 160 of the throttling diversion component 150. A portion of the refrigerant enters the compressor 110 through the first compression inlet 120, and the other portion flows through the valve body 280 and enters the compressor 110 through the second compression inlet 122. That is, the high-temperature and high-pressure refrigerant discharged from the compressor 110 directly enters the second heat exchanger 180, thereby achieving defrosting, thereby achieving the defrosting cycle of the refrigerant. In addition, the diversion of the gas-liquid separator 154 by the valve body 280 increases the suction volume of the compressor 110, thereby increasing the amount of refrigerant in the system during defrosting, improving the defrosting effect, and ensuring complete defrosting. At the same time, in the defrost mode, the low-temperature and low-pressure refrigerant does not pass through the first heat exchanger 270, which can avoid the reliability problem of condensation on the shell of the refrigeration equipment and improve the quality of the refrigeration equipment. After defrosting, high pressure can be quickly established in the first heat exchanger 270, and the heat exchange system 100 can quickly enter the cooling mode.

[0068] Specifically, one end of the valve body 280 is connected to the pipeline between the air outlet 160 on the throttling diverter assembly 150 and the first compression inlet 120 of the compressor 110, and the other end of the valve body 280 is connected to the pipeline between the fifth interface 196 of the second connecting member 190 and the second compression inlet 122 of the compressor 110.

[0069] like Figure 1 、 Figure 2 and Figure 6 As shown, as a possible embodiment of the present invention, the heat exchange system 100 includes a compressor 110, a first connecting member 130, a first heat exchanger 270, a first throttle 152, a gas-liquid separator 154, a second throttle 162, a second heat exchanger 180, a second connecting member 190 and a valve body 280, wherein the first connecting member 130 and the second connecting member 190 respectively have three interfaces, and then through the first connecting member 130 and the second connecting member 190, the entire heat exchange system 100 presents two circulation loops, which respectively correspond to the cooling mode and the defrosting mode of the heat exchange equipment.

[0070] 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 the refrigerant, and the compression outlet 124 is used to discharge the refrigerant, thereby providing power for the circulation of the refrigerant.

[0071] The first connecting member 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 opened, the refrigerant can pass through the first interface 134. When the first interface 134 is closed, the refrigerant cannot pass through the first interface 134. The second interface 136 can be opened and closed. When the second interface 136 is opened, the refrigerant can pass through the second interface 136. When the second interface 136 is closed, the refrigerant cannot pass through the second interface 136. The third interface 138 can be opened and closed. When the third interface 138 is opened, the refrigerant can pass through the third interface 138. When the third interface 138 is closed, the refrigerant cannot pass through the third interface 138.

[0072] The first heat exchanger 270 has a first heat exchange port and a second heat exchange port.

[0073] The first throttle member 152 has a first throttle port and a second throttle port.

[0074] The gas-liquid separator 154 has a first through port 156, a second through port 158 and an air outlet 160. The refrigerant can enter the gas-liquid separator 154 through the first through port 156, and then the gaseous refrigerant is discharged from the air outlet 160, and the liquid refrigerant is discharged from the second through port 158. The refrigerant can also enter the gas-liquid separator 154 through the second through port 158, and then the gaseous refrigerant is discharged from the air outlet 160, and the liquid refrigerant can be stored in the gas-liquid separator 154.

[0075] The second throttle member 162 has a third throttle flow port and a fourth throttle flow port.

[0076] The second heat exchanger 180 has a third heat exchange port and a fourth heat exchange port.

[0077] The second connecting member 190 has a fourth interface 194, a fifth interface 196 and a sixth interface 198, and the fourth interface 194, the fifth interface 196 and the sixth interface 198 are connected. The fourth interface 194 can be opened and closed. When the fourth interface 194 is opened, the refrigerant can pass through the fourth interface 194. When the fourth interface 194 is closed, the refrigerant cannot pass through the fourth interface 194. The fifth interface 196 can be opened and closed. When the fifth interface 196 is opened, the refrigerant can pass through the fifth interface 196. When the fifth interface 196 is closed, the refrigerant cannot pass through the fifth interface 196. The sixth interface 198 can be opened and closed. When the sixth interface 198 is opened, the refrigerant can pass through the sixth interface 198. When the sixth interface 198 is closed, the refrigerant cannot pass through the sixth interface 198.

[0078] The valve body 280 is a two-way valve having a first switch port 282 and a second switch port 284 .

[0079] Furthermore, the compression outlet 124 of the compressor 110 is connected to the first interface 134 of the first connecting member 130, the first compression inlet 120 of the compressor 110 is connected to the gas 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 connecting member 190; the first interface 134 of the first connecting member 130 is connected to the compression outlet 124 of the compressor 110, the second interface 136 of the first connecting member 130 is connected to the first heat exchange port of the first heat exchanger 270, and the third interface 136 of the first connecting member 130 is connected to the first heat exchange port of the first heat exchanger 270. 8 is connected to the sixth interface 198 of the second connecting member 190; the first heat exchange port of the first heat exchanger 270 is connected to the second interface 136 of the first connecting member 130, the second heat exchange port of the first heat exchanger 270 is connected to the first throttling port of the first throttling member 152; the first throttling port of the first throttling member 152 is connected to the second heat exchange port of the first heat exchanger 270, the second throttling port of the first throttling member 152 is connected to the first through port 156 of the gas-liquid separator 154; the first through port 156 of the gas-liquid separator 154 is connected to the second throttling port of the first throttling member 152 The second through port 158 of the gas-liquid separator 154 is connected to the third throttling port of the second throttling member 162, and the gas outlet 160 of the gas-liquid separator 154 is connected to the first compression inlet 120 of the compressor 110; the third throttling port of the second throttling member 162 is connected to the second through port 158 of the gas-liquid separator 154, and the fourth throttling port of the second throttling member 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 member 162, and the fourth heat exchange port of the second heat exchanger 180 is connected to The fourth interface 194 of the second connecting member 190 is connected; the fourth interface 194 of the second connecting member 190 is connected to the fourth heat exchange port of the second heat exchanger 180, the fifth interface 196 of the second connecting member 190 is connected to the second compression inlet 122 of the compressor 110, and the sixth interface 198 of the second connecting member 190 is connected to the third interface 138 of the first connecting member 130; the first switch port 282 of the valve body 280 is connected to the air outlet 160 of the gas-liquid separator 154, and the second switch port 284 of the valve body 280 is connected to the second compression inlet 122 of the compressor 110.

[0080] Among them, such as Figure 1 As shown, Figure 1The middle arrow indicates the flow direction of the refrigerant. When the heat exchange system 100 is in cooling mode, the first interface 134 and the second interface 136 on the first connecting member 130 are opened, the third interface 138 on the first connecting member 130 is closed, the fourth interface 194 and the fifth interface 196 on the second connecting member 190 are opened, the sixth interface 198 on the second connecting member 190 is closed, and the valve body 280 is closed. In this state, the refrigerant is discharged from the compression outlet 124 of the compressor 110, passes through the first interface 134 and the second interface 136 of the first connecting member 130, enters the first heat exchanger 270, and then enters the first throttling member 152 for the first throttling, and then enters the gas-liquid Gas-liquid separation is carried out in the separator 154, and the gaseous refrigerant enters the first compression inlet 120 of the compressor 110, and the liquid refrigerant enters the second throttling member 162 for a second throttling. Then the refrigerant enters the second heat exchanger 180, and then the refrigerant enters the second compression inlet 122 of the compressor 110 through the fourth interface 194 and the fifth interface 196 of the second connecting member 190, thereby realizing the refrigeration cycle of the refrigerant. Then, through two throttlings, on the one hand, the gaseous refrigerant without phase change latent heat entering the second heat exchanger 180 is reduced, and at the same time, the exhaust volume of the compressor 110 is increased and the suction pressure is increased, thereby improving the refrigeration capacity of the heat exchange system 100, reducing the startup rate and energy consumption.

[0081] like Figure 2 As shown, Figure 2 The middle arrow indicates the flow direction of the refrigerant. When the heat exchange system 100 is in the defrost mode, the first interface 134 and the third interface 138 of the first connecting member 130 are open, the second interface 136 of the first connecting member 130 is closed, the fourth interface 194 and the sixth interface 198 of the second connecting member 190 are open, and the fifth interface 196 of the second connecting member 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 connecting member 130. Since the second interface 136 is closed, the refrigerant flows directly to the second connecting member 190. Since the fifth interface 196 of the second connecting member 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 member 162. Then, the refrigerant enters the gas-liquid separator 154. A part of the gaseous refrigerant passes through the first compression inlet 120. Enters the compressor 110, and the other part flows through the valve body 280 and enters the compressor 110 through the second compression inlet 122. The liquid refrigerant can also be stored in the gas-liquid separator 154, that is, the high-temperature and high-pressure refrigerant discharged from the compressor 110 directly enters the second heat exchanger 180, thereby realizing defrosting, thereby realizing the defrost cycle of the refrigerant, and, through the diversion of the gas-liquid separator 154 by the valve body 280, the suction volume of the compressor 110 is increased, thereby increasing the amount of refrigerant in the system during defrosting, thereby improving the defrosting effect.

[0082] The heat exchange system 100 provided by the present invention includes a compressor 110, a first connecting member 130, a first heat exchanger 270, a first throttle 152, a gas-liquid separator 154, a second throttle 162, a second heat exchanger 180, a second connecting member 190 and a valve body 280.

[0083] Among them, the compressor 110 is provided with a first compression inlet 120, a second compression inlet 122 and a compression outlet 124, the first connecting member 130 is provided with three interfaces, namely the first interface 134, the second interface 136 and the third interface 138, the second connecting member 190 is provided with three interfaces, namely the fourth interface 194, the fifth interface 196 and the sixth interface 198, and the gas-liquid separator 154 is provided with a first through port 156, the second through port 158 and the air outlet 160. Specifically, the first compression inlet 120 of the compressor 110 is connected to the fifth interface 196 of the second connecting member 190, and is also connected to the second switch port 284 of the valve body 280. The second compression inlet 122 of the compressor 110 is connected to the gas outlet 160 of the gas-liquid separator 154, and the compression outlet 124 of the compressor 110 is connected to the first interface 134 of the first connecting member 130; the first interface 134 of the first connecting member 130 is connected to the compression outlet 124 of the compressor 110, and the second interface 136 of the first connecting member 130 is connected to the first heat exchanger The first heat exchanger 270 is connected to the third interface 138 of the first connecting member 130 and the sixth interface 198 of the second connecting member 190; one end of the first heat exchanger 270 is connected to the second interface 136 of the first connecting member 130, and the other end of the first heat exchanger 270 is connected to the first throttle member 152; one end of the first throttle member 152 is connected to the first heat exchanger 270, and the other end of the first throttle member 152 is connected to the first through port 156 of the gas-liquid separator 154; the first through port 156 of the gas-liquid separator 154 is connected to the first throttle member 152 The second through port 158 of the gas-liquid separator 154 is connected to the second throttle member 162, the gas outlet 160 of the gas-liquid separator 154 is connected to the second compression inlet 122 of the compressor 110, and is also connected to the first switch port 282 of the valve body 280; one end of the second throttle member 162 is connected to the second through port 158 of the gas-liquid separator 154, and the other end of the second throttle member 162 is connected to the second heat exchanger 180; one end of the second heat exchanger 180 is connected to the second throttle member 162, and the other end of the second heat exchanger 180 is connected to the second connecting member The fourth interface 194 of 190 is connected; the fourth interface 194 of the second connecting member 190 is connected to the second heat exchanger 180, the fifth interface 196 of the second connecting member 190 is connected to the second compression inlet 122 of the compressor 110, and the sixth interface 198 of the second connecting member 190 is connected to the third interface 138 of the first connecting member 130; the first switch port 282 of the valve body 280 is connected to the air outlet 160 of the throttling diverter assembly 150, and the first switch port 282 of the valve body 280 is connected to the second compression inlet 122 of the compressor 110.

[0084] In addition, in conjunction with the opening and closing states of the first interface 134, the second interface 136 and the third interface 138 on the first connecting member 130, and the fourth interface 194, the fifth interface 196 and the sixth interface 198 on the second connecting member 190, and the switching state of the valve body 280, the heat exchange system 100 can form two circuits, corresponding to the cooling mode and the defrosting mode of the heat exchange system 100 respectively.

[0085] Specifically, when the heat exchange system 100 is in cooling mode, the first interface 134 and the second interface 136 on the first connecting member 130 are opened, the third interface 138 on the first connecting member 130 is closed, the fourth interface 194 and the fifth interface 196 on the second connecting member 190 are opened, and the sixth interface 198 on the second connecting member 190 is closed. In this state, the refrigerant is discharged from the compression outlet 124 of the compressor 110, passes through the first interface 134 and the second interface 136 of the first connecting member 130, enters the first heat exchanger 270, and then enters the first throttling member 152 for the first throttling, and then passes through the gas-liquid separator 154 for gas-liquid separation. The gaseous refrigerant passes through the outlet 160 enters the first compression inlet 120 of the compressor 110, and the liquid refrigerant enters the second throttling member 162 through the second through port 158 of the gas-liquid separator 154, thereby realizing the second throttling, and then the refrigerant enters the second heat exchanger 180, and then the refrigerant enters the second compression inlet 122 of the compressor 110 through the fourth interface 194 and the fifth interface 196 of the second connecting member 190, thereby realizing the refrigeration cycle of the refrigerant, and then through two throttling, on the one hand, the gaseous refrigerant without phase change latent heat entering the second heat exchanger 180 is reduced, and at the same time, the exhaust volume of the compressor 110 is increased and the suction pressure is increased, thereby improving the refrigeration capacity of the heat exchange system 100, reducing the startup rate and energy consumption.

[0086] When the heat exchange system 100 is in defrost mode, the first interface 134 and the third interface 138 of the first connecting member 130 are opened, the second interface 136 of the first connecting member 130 is closed, the fourth interface 194 and the sixth interface 198 of the second connecting member 190 are opened, and the fifth interface 196 of the second connecting member 190 is closed. In this state, the refrigerant is discharged from the compression outlet 124 of the compressor 110, enters the sixth interface 198 of the second connecting member 190 through the first interface 134 and the third interface 138 of the first connecting member 130, and then enters the second heat exchanger 180 through the fourth interface 194 of the second connecting member 190, then enters the second throttling member 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 a part of the gaseous refrigerant enters the first compression inlet 120 through the air outlet 160 of the gas-liquid separator 154, and a part of the gaseous refrigerant enters the valve body 280 through the first switch port 282 through the air outlet 160 of the gas-liquid separator 154, and is discharged from the second switch port 284, and returns to the compressor 110 through the second compression inlet 122 of the compressor 110, that is, the high-temperature and high-pressure refrigerant discharged from the compressor 110 directly enters the second heat exchanger 180, thereby realizing defrosting, thereby realizing the defrost cycle of the refrigerant, and through the diversion of the gas-liquid separator 154 by the valve body 280, the suction volume of the compressor 110 is increased, thereby increasing the amount of refrigerant in the system during defrosting, thereby improving the defrosting effect.

[0087] After being throttled by the second throttling member 162, the evaporation pressure of the refrigerant is low and the evaporation temperature is low. By absorbing the heat from the first connecting pipe 210 and the outside world, the refrigerant can be kept in a superheated gaseous state, reducing the possibility of the compressor 110 sucking in liquid. In addition, this reverse defrosting cycle can improve the defrosting efficiency, reduce energy consumption, reduce the room temperature difference between the freezer compartments of the refrigeration equipment, and extend the food preservation period. The low-temperature and low-pressure refrigerant does not flow through the first heat exchanger 270, avoiding condensation in the refrigeration equipment due to excessively low temperature, thereby improving product quality and reliability.

[0088] Specifically, the first switch port 282 of the valve body 280 is connected to the second connecting pipe 212 between the air outlet 160 on the throttling diverter assembly 150 and the first compression inlet 120 of the compressor 110, and the second switch port 284 of the valve body 280 is connected to the third connecting pipe 214 between the fifth interface 196 of the second connecting member 190 and the second compression inlet 122 of the compressor 110.

[0089] As a possible embodiment of the present invention, the valve body 280 is a variable valve, and in the defrost mode, the valve body 280 can adjust the flow between the air outlet 160 of the throttling and diverting assembly 150 and the second compression inlet 122 of the compressor 110.

[0090] In this embodiment, the valve body 280 adopts a variable valve, and thus in the defrost mode, the flow between the air outlet 160 of the gas-liquid separator 154 and the second compression inlet 122 of the compressor 110 can be adjusted, so that the flow between the air outlet 160 of the gas-liquid separator 154 and the second compression inlet 122 of the compressor 110 can be increased or decreased according to the defrost effect of the heat exchange system 100. That is, when the defrost efficiency is poor, the opening of the valve body 280 is increased, the amount of refrigerant in the heat exchange system 100 is increased, and the defrost speed is improved. When the defrost effect is excessive, the opening of the valve body 280 is reduced. Reducing the opening of the valve body 280 can reduce the refrigerant flow circulating in the heat exchange system 100, thereby ensuring 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, thereby ensuring that the cooling effect can be achieved quickly after the defrost mode.

[0091] like Figure 6 As shown, as a possible embodiment of the present invention, the heat exchange system 100 also includes: a temperature detection component 290 electrically connected to the valve body 280, the temperature detection component 290 is used to detect the ambient temperature of the environment where the second heat exchanger 180 is located, and the valve body 280 adjusts the opening of the valve body 280 according to the ambient temperature.

[0092] In this embodiment, the heat exchange system 100 also includes a temperature detection component 290 electrically connected to the valve body 280. The variable valve adjusts the opening of the valve body 280 according to the ambient temperature. Specifically, the temperature detection component 290 is used to detect the ambient temperature of the second heat exchanger 180. When the ambient temperature of the second heat exchanger 180 is lower than the temperature threshold, it is necessary to improve the defrosting effect, thereby increasing the opening of the valve body 280, and increasing the amount of refrigerant in the heat exchange system 100, thereby improving the defrosting effect and increasing the defrosting speed. When the ambient temperature of the second heat exchanger 180 is higher than the temperature threshold, it is necessary to reduce the defrosting effect, thereby reducing the opening of the valve body 280, and reducing the amount of refrigerant in the heat exchange system 100, to ensure that the cooling effect can be achieved quickly when the heat exchange system 100 switches to the cooling mode.

[0093] Specifically, the temperature detection component 290 and the valve body 280 are electrically connected through the controller 300. The controller 300 receives the ambient temperature detected by the temperature detection component 290 and determines the opening of the valve body 280 based on the preset temperature range corresponding to the ambient temperature. The corresponding relationship between the opening of the valve body 280 and the ambient temperature can be preset, and the opening of the valve body 280 can be adjusted based on the ambient temperature.

[0094] like Figure 4As shown, as a possible embodiment of the present invention, the first connecting member 130 includes a first body 132 and a first switch 140, a second switch 142 and a third switch 144 arranged on the first body 132, a channel is opened on the first body 132, 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 arranged at the first interface 134, and can control the opening and closing of the first interface 134, the second switch 142 is arranged at the second interface 136, and can control the opening and closing of the second interface 136, and the third switch 144 is arranged at the third interface 138, and can control the opening and closing of the third interface 138.

[0095] In this embodiment, the first connecting member 130 includes a first main body 132, and a flow channel is provided in the first main body 132. The flow channel forms three interfaces on the first main body 132, namely a first interface 134, a second interface 136 and a third interface 138. Three switches are provided on the first main body 132, namely a first switch 140, a second switch 142 and a third switch 144.

[0096] Among them, the first switch 140 is set at the first interface 134, and the opening and closing of the first switch 140 can control the opening and closing of the first interface 134, that is, when the first switch 140 is opened, the first interface 134 is opened, and the medium can flow through the first interface 134; when the first switch 140 is closed, the first interface 134 is closed, and the medium cannot flow through the first interface 134; the second switch 142 is set at the second interface 136, and the opening and closing of the second switch 142 can control the opening and closing of the second interface 136, that is, when the second switch 1 42 is opened, the second interface 136 is opened, and the medium can flow through the second interface 136; when the second 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, and then 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 opened, the third interface 138 is opened, 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.

[0097] Furthermore, the state of the first connecting member 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.

[0098] Specifically, the heat exchange system 100 also includes a controller 300, 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 300, so that the controller 300 can control the first switch 140, the second switch 142 and the third switch 144.

[0099] like Figure 4 As shown, as a possible embodiment of the present invention, the first body 132 is a three-way pipe.

[0100] In this embodiment, the first body 132 is a three-way pipeline, and the first interface 134 , the second interface 136 and the third interface 138 are three ports of the three-way pipeline respectively.

[0101] As a possible embodiment of the present invention, the first connecting member 130 is a first three-way valve.

[0102] In this embodiment, the first connecting member 130 adopts a first three-way valve, which has a first interface 134, a second interface 136 and a third interface 138. In the refrigeration mode, the first interface 134 and the second interface 136 are open, that is, the first interface 134 and the second interface 136 are connected, and the third interface 138 is closed, that is, the third interface 138 and the first interface 134 are not connected, and the third interface 138 and the second interface 136 are not connected. In the defrost mode, the first interface 134 and the third interface 138 are open, that is, the first interface 134 and the third interface 138 are connected, and the second interface 136 is closed, that is, the second interface 136 and the first interface 134 are not connected, and the second interface 136 and the third interface 138 are not connected.

[0103] like Figure 5 As shown, as a possible embodiment of the present invention, the second connecting member 190 includes a second body 192 and a fourth switch 200, a fifth switch 202 and a sixth switch 204 arranged on the second body 192, a channel is opened on the second body 192, 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 set at the fourth interface 194, and can control the opening and closing of the fourth interface 194, the fifth switch 202 is set at the fifth interface 196, and can control the opening and closing of the fifth interface 196, and the sixth switch 204 is set at the sixth interface 198, and can control the opening and closing of the sixth interface 198.

[0104] In this embodiment, the second connecting member 190 includes a second main body 192, and a flow channel is provided in the second main body 192. The flow channel forms three interfaces on the second main body 192, namely a fourth interface 194, a fifth interface 196 and a sixth interface 198. Three switches are provided on the second main body 192, namely a fourth switch 200, a fifth switch 202 and a sixth switch 204.

[0105] Among them, the fourth switch 200 is set at the fourth interface 194, and the opening and closing of the fourth switch 200 can control the opening and closing of the fourth interface 194, that is, when the fourth switch 200 is opened, the fourth interface 194 is opened, and the medium can flow through the fourth interface 194; when the fourth switch 200 is closed, the fourth interface 194 is closed, and the medium cannot flow through the fourth interface 194; the fifth switch 202 is set at the fifth interface 196, and the opening and closing of the fifth switch 202 can control the opening and closing of the fifth interface 196, that is, when the fifth switch 200 is opened, the fourth interface 194 is opened, and the medium can flow through the fourth interface 194; 02 is opened, the fifth interface 196 is opened, and the medium can flow through the fifth interface 196; when the fifth switch 202 is closed, the fifth interface 196 is closed, and the medium cannot flow through the fifth interface 196; the sixth switch 204 is set at the sixth interface 198, and then the opening and closing of the sixth switch 204 can control the opening and closing of the sixth interface 198, that is, when the sixth switch 204 is opened, the sixth interface 198 is opened, and the medium can flow through the sixth interface 198; when the sixth switch 204 is closed, the sixth interface 198 is closed, and the medium cannot flow through the sixth interface 198.

[0106] Furthermore, the state of the second connecting member 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.

[0107] Specifically, the heat exchange system 100 also includes a controller 300, the fourth switch 200 has a fourth terminal, the fifth switch 202 has a fifth terminal, and the sixth switch 204 has a sixth terminal. The fourth terminal, the fifth terminal and the sixth terminal are all electrically connected to the controller 300, so that the controller 300 can control the fourth switch 200, the fifth switch 202 and the sixth switch 204.

[0108] like Figure 5 As shown, as a possible embodiment of the present invention, the second body 192 is a three-way pipe.

[0109] In this embodiment, the second body 192 is a three-way pipeline, and the fourth interface 194 , the fifth interface 196 and the sixth interface 198 are three ports of the three-way pipeline respectively.

[0110] As a possible embodiment of the present invention, the second connecting member 190 is a first three-way valve.

[0111] In this embodiment, the second connecting member 190 adopts a second three-way valve, which has a fourth interface 194, a fifth interface 196 and a sixth interface 198. In the refrigeration mode, the fourth interface 194 and the fifth interface 196 are open, that is, the fourth interface 194 and the fifth interface 196 are connected, and the sixth interface 198 is closed, that is, the sixth interface 198 and the fourth interface 194 are not connected, and the sixth interface 198 and the fifth interface 196 are not connected. In the defrost mode, the fourth interface 194 and the sixth interface 198 are open, that is, the fourth interface 194 and the sixth interface 198 are connected, and the fifth interface 196 is closed, that is, the fifth interface 196 and the fourth interface 194 are not connected, and the fifth interface 196 and the sixth interface 198 are not connected.

[0112] 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 connecting pipe 210 connected to the fourth interface 194 of the second connecting member 190 and the fourth heat exchange port of the second heat exchanger 180 .

[0113] In this embodiment, the heat exchange system 100 further includes a first connecting member 130 , a first connecting pipe 210 connected between the fourth interface 194 of the second connecting member 190 and the second heat exchanger 180 , and the first connecting pipe 210 fits the second throttling member 162 .

[0114] Furthermore, in the defrost mode, the refrigerant absorbs the heat of the first connecting pipe 210 while passing through the second throttle member 162 to throttle and reduce the pressure. Furthermore, in the defrost mode, the refrigerant absorbs the heat of the first connecting pipe 210 while passing through the second throttle member 162 to throttle and reduce the pressure. Then, the refrigerant is converted into a low-pressure gaseous refrigerant, thereby improving the heat exchange efficiency of the heat exchange system 100.

[0115] Specifically, the first connecting pipe 210 and the second throttle member 162 may be bonded together by welding.

[0116] Among them, since the second throttling member 162 throttles the refrigerant in both the cooling mode and the defrost mode, the first connecting pipe 210 and the second throttling member 162 are fitted together, so that the first connecting pipe 210 and the second throttling member 162 can perform heat exchange in both the cooling mode and the defrost mode, thereby improving the efficiency of the heat exchange system 100, improving the cooling capacity of the heat exchange system 100, reducing the start-up rate of the heat exchange system 100 and reducing the energy consumption of the heat exchange system 100.

[0117] As a possible embodiment of the present invention, the second throttling member 162 is a second capillary tube.

[0118] In this embodiment, the second throttle member 162 adopts a second capillary tube, and thus the second capillary tube and the first connecting tube 210 can have a longer fitting length, so that the refrigerant in the second throttle member 162 can better absorb the heat in the first connecting tube 210.

[0119] As a possible embodiment of the present invention, the first throttle member 152 is a first capillary tube or a first throttle valve.

[0120] In this embodiment, the first throttle member 152 is a first capillary tube or a first throttle valve.

[0121] like Figure 1 and Figure 2 As shown in FIG. 1 , as a 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 in communication with the second heat exchange port of the first heat exchanger 270, and the second filter port of the first filter element 230 is in communication with the first throttling port of the first throttling element 152.

[0122] In this embodiment, the heat exchange system 100 also includes a first filter element 230 arranged 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 passing area of the first throttling element 152 is relatively small, the first filter element 230 is provided to filter the refrigerant to reduce the risk of the first throttling element 152 being blocked.

[0123] like Figure 1 and Figure 2 As shown, as a 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 throttle 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 throttle port of the second throttle element 162.

[0124] In this embodiment, the heat exchange system 100 also includes a second filter element 240 arranged between the second heat exchanger 180 and the second throttling element 162. When the heat exchange system 100 is in the 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 passing area of the second throttling element 162 is relatively small, the second filter element 240 is provided to filter the refrigerant to reduce the risk of the second throttling element 162 being blocked.

[0125] 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 for supplying air to the first heat exchanger 270 , and a second fan 260 for supplying air to the second heat exchanger 180 .

[0126] In this embodiment, the heat exchange system 100 further includes a first fan 250 arranged corresponding to the first heat exchanger 270 , so that the first fan 250 can accelerate the airflow flowing through the first heat exchanger 270 and improve the heat exchange effect of the first heat exchanger 270 .

[0127] The heat exchange system 100 further includes a second fan 260 disposed corresponding to the second heat exchanger 180 , so that the second fan 260 can accelerate the airflow flowing through the second heat exchanger 180 and improve the heat exchange effect of the second heat exchanger 180 .

[0128] In which, the heat exchange system 100 includes a controller 300, the first fan 250 has a first fan 250 terminal, the second fan 260 has a second fan 260 terminal, the first fan 250 terminal and the second fan 260 terminal are electrically connected to the controller 300, and then the controller 300 controls the operation of the first fan 250 and the second fan 260.

[0129] Specifically, when heat exchange system 100 is applied to a refrigerator or other refrigeration equipment, after second fan 260 is activated, air inside the refrigerator compartment passes through second heat exchanger 180 at a predetermined speed, forming forced convection heat exchange and blowing the cooling energy from second heat exchanger 180 into the refrigerator compartment. After the second fan is activated, it drives air outside the refrigerator to pass through first heat exchanger 270 at a predetermined speed, forming forced convection heat exchange and blowing the heat from first heat exchanger 270 out of the refrigerator. Specifically, first fan 250 has first blades, and second fan 260 has second blades.

[0130] 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.

[0131] In this embodiment, the first heat exchanger 270 is a condenser and the second heat exchanger 180 is an evaporator.

[0132] like Figure 3 As shown, as a possible embodiment of the present invention, the compressor 110 includes a third body 112 and a first intake pipe 114, a second intake pipe 116 and an exhaust pipe 118 arranged on the third body 112, the first intake pipe 114 is provided with a first compression inlet 120, the second intake pipe 116 is provided with a second compression inlet 122, and the exhaust pipe 118 is provided with a compression outlet 124.

[0133] In this embodiment, the compressor 110 includes a third body 112 and a first intake pipe 114, a second intake pipe 116 and an exhaust pipe 118 arranged on the third body 112, the first intake pipe 114 is arranged on the first intake pipe 114, the second intake pipe 116 is arranged on the second intake pipe 116, and the compression outlet 124 is arranged on the exhaust pipe 118, so that the compressor 110 is connected to the second connecting member 190 through the first intake pipe 114, the compressor 110 is connected to the gas-liquid separator 154 through the second intake pipe 116, and the compressor 110 is connected to the first connecting member 130 through the exhaust pipe 118, thereby facilitating the assembly of the heat exchange system 100.

[0134] The first air intake pipe 114 , the second air intake pipe 116 and the air exhaust pipe 118 are welded to the third body 112 .

[0135] like Figure 3 As shown, as a possible embodiment of the present invention, the compressor 110 further includes a process pipe 126 disposed on the third body 112 .

[0136] In this embodiment, the compressor 110 further 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 .

[0137] The process tube 126 is welded to the third body 112 .

[0138] The present invention provides a refrigeration device, comprising: a heat exchange system 100 provided in any of the above embodiments.

[0139] The refrigeration equipment provided by the present invention includes the heat exchange system 100 provided in any of the above embodiments, and therefore has all the beneficial effects of the heat exchange system 100 provided in any of the above embodiments, which will not be described one by one here.

[0140] Specifically, the refrigeration equipment may be a refrigerator, a freezer, a display cabinet or a vending machine, etc.

[0141] The refrigeration device includes a shell, and the first heat exchanger 270 is in contact with the inner wall of the shell.

[0142] In the present 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 "plurality" refers to two or more, unless expressly limited otherwise. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0143] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or units referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0144] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these 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.

[0145] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A heat exchange system, characterized in that: include: a compressor comprising a first compression inlet, a second compression inlet, and a compression outlet; a first connecting member, the first connecting member comprising a first interface, a second interface and a third interface, 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 having an air outlet, the air outlet being connected to the first compression inlet, and the throttling and diverting assembly being capable of throttling on both sides of the air outlet; a second heat exchanger, connected to the throttling and diverting assembly; a second connecting member, the second connecting member comprising a fourth interface, a fifth interface, and a sixth interface, 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; a valve body, one end of which is connected to the gas outlet and the other end of which is connected to the second compression inlet; Among them, when the heat exchange system is in cooling mode, the first interface and the second interface are opened, the third interface is closed, the fourth interface and the fifth interface are opened, the sixth interface is closed, and the valve body is closed; when the heat exchange system is in defrosting mode, the first interface and the third interface are opened, the second interface is closed, the fourth interface and the sixth interface are opened, the fifth interface is closed, and the valve body is opened.

2. The heat exchange system according to claim 1, characterized in that: The valve body is a variable valve for adjusting the flow between the gas outlet and the second compression inlet in the defrost mode.

3. The heat exchange system according to claim 2, characterized in that: Also includes: The temperature detection component is used to detect the ambient temperature and is electrically connected to the valve body. The variable valve adjusts the opening of the valve body according to the ambient temperature.

4. The heat exchange system according to claim 1, characterized in that: The throttling and diverting component includes: a first throttling element connected to the first heat exchanger; The gas-liquid separator comprises a first through port, a second through port and the gas outlet, wherein the first throttling member is connected to the first through port; One end of the second throttling element is connected to the second through port, and the other end is connected to the second heat exchanger.

5. The heat exchange system according to claim 1, characterized in that: The first connecting member includes: a first body, wherein the first interface, the second interface, and the third interface are provided on the first body; a first switch, provided at the first interface, for controlling the opening and closing of the first interface; A second switch, provided at the second interface, for controlling the opening and closing of the second interface; The third switch is provided at the third interface and is used to control the opening and closing of the third interface.

6. The heat exchange system according to claim 1, characterized in that: The first connecting member is a first three-way valve.

7. The heat exchange system according to claim 1, characterized in that: The second connecting member includes: A second body, the fourth interface, the fifth interface and the sixth interface are provided on the second body; a fourth switch, provided at the fourth interface, for controlling the opening and closing of the fourth interface; a fifth switch, provided at the fifth interface, for controlling the opening and closing of the fifth interface; The sixth switch is provided at the sixth interface and is used to control the opening and closing of the sixth interface.

8. The heat exchange system according to claim 1, characterized in that: The second connecting member is a first three-way valve.

9. The heat exchange system according to claim 4, characterized in that: Also includes: The first connecting pipe is used to connect the fourth interface and the second heat exchanger, and the first connecting pipe is in close contact with the second throttling member.

10. The heat exchange system according to claim 9, characterized in that: The second throttling element is a second capillary tube.

11. The heat exchange system according to claim 4, characterized in that: The first throttling element is a first capillary tube or a first throttle valve.

12. The heat exchange system according to any one of claims 1 to 11, characterized in that: Also includes: A first filter element is provided, wherein the first heat exchanger and the throttling and diverting assembly are communicated with each other through the first filter element.

13. The heat exchange system according to any one of claims 1 to 11, characterized in that: Also includes: The second filter element is connected to the second heat exchanger and the throttling and diverting assembly through the second filter element.

14. The heat exchange system according to any one of claims 1 to 11, characterized in that: Also includes: a first fan, arranged corresponding to the first heat exchanger; The second fan is provided corresponding to the second heat exchanger.

15. A refrigeration device, characterized in that: include: The heat exchange system according to any one of claims 1 to 14.

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