CN219624276U - Heat exchange assembly and refrigeration equipment - Google Patents

Abstract

The utility model provides a heat exchange assembly and refrigeration equipment. The heat exchange assembly comprises a compressor, a first heat exchanger, a flow dividing valve, a first throttling component, a second heat exchanger and a first pipeline; the compressor comprises an exhaust port and a first return port; the first heat exchanger is connected with the exhaust port; the first end of the diverter valve is connected with the first heat exchanger; the first throttling component is connected with the second end of the flow dividing valve; the second heat exchanger is connected with the first throttling component and the first air return port; the first end of the first pipeline is connected with the exhaust port, and the second end of the first pipeline is connected with the third end of the diverter valve.

Description

Heat exchange assembly and refrigeration equipment

Technical Field

The utility model relates to the technical field of refrigeration equipment, in particular to a heat exchange assembly and refrigeration equipment.

Background

At present, an evaporator of the refrigeration equipment can exchange heat with a refrigerating compartment or a freezing compartment in a coil pipe mode, and after the evaporator works for a period of time, frost can be formed on the surface of the evaporator, and the frost on the surface of the evaporator can influence the efficiency of the refrigeration equipment.

In the related art, the refrigerating apparatus may be provided with a heater, and frost accumulated in the evaporator is removed by the heater, but defrosting by the heater may cause the temperature of the refrigerating compartment or the freezing compartment to rise, thereby affecting the freezing and refrigerating effects of the refrigerating apparatus.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art or related art.

To this end, a first aspect of the utility model proposes a heat exchange assembly.

A second aspect of the utility model proposes a refrigeration appliance.

In view of this, a first aspect of the present utility model provides a heat exchange assembly comprising a compressor, a first heat exchanger, a diverter valve, a first throttling element, a second heat exchanger and a first conduit; the compressor comprises an exhaust port and a first return port; the first heat exchanger is connected with the exhaust port; the first end of the diverter valve is connected with the first heat exchanger; the first throttling component is connected with the second end of the flow dividing valve; the second heat exchanger is connected with the first throttling component and the first air return port; the first end of the first pipeline is connected with the exhaust port, and the second end of the first pipeline is connected with the third end of the diverter valve.

The heat exchange assembly comprises a compressor, wherein the compressor comprises an exhaust port and a first air return port, a refrigerant compressed by the compressor can enter a pipeline of the heat exchange assembly from the exhaust port, after flowing through all parts on the pipeline, the refrigerant can enter the interior of the compressor through the first air return port, and after the refrigerant entering through the first air return port is compressed again by the compressor, the refrigerant enters the pipeline of the heat exchange assembly through the exhaust port, so that circulation is formed.

The heat exchange assembly further comprises a first heat exchanger, a flow dividing valve, a first throttling component and a second heat exchanger, wherein the first heat exchanger is connected with the exhaust port, the first end of the flow dividing valve is connected with the first heat exchanger, the first throttling component is connected with the second end of the flow dividing valve, the second heat exchanger is connected with the first throttling component and is connected with the first air return port, and a circulation flow path is formed, so that a refrigerant refrigerates each compartment of the refrigeration equipment.

The heat exchange assembly further comprises a first pipeline, the first end of the first pipeline is connected with the exhaust port, the second end of the first pipeline is connected with the third end of the flow dividing valve, when defrosting is carried out on the second heat exchanger, the first pipeline is matched with the flow dividing valve, so that high-temperature and high-pressure refrigerant discharged from the exhaust port of the compressor can flow into the second heat exchanger through the first pipeline, the third end of the flow dividing valve and the second end of the flow dividing valve, and because the high-temperature and high-pressure refrigerant does not exchange heat with the external environment of the refrigeration equipment through the first heat exchanger before entering the second heat exchanger, the refrigerant entering the second heat exchanger still has a certain temperature, defrosting is carried out on the second heat exchanger, the refrigeration capacity of the refrigeration equipment is improved, the open probability of the refrigeration equipment is reduced, and the energy consumption of the whole refrigeration equipment is reduced.

The second heat exchanger is defrosted through the refrigerant with a certain temperature, heat is transmitted from the inside of the second heat exchanger to the surface of the second heat exchanger, and when defrosting is achieved, the heat cannot be directly radiated into the room of the refrigerating equipment, so that the influence of defrosting of the second heat exchanger on the room of the refrigerating equipment is reduced, the temperature fluctuation in the room of the refrigerating equipment is reduced, and the freezing and/or refrigerating effect in the room of the refrigerating equipment is improved.

Because when defrosting the second heat exchanger, the refrigerant also can enter the second heat exchanger after passing through the first throttling component after passing through the first pipeline, the high-temperature and high-pressure liquid refrigerant can be throttled by the first throttling component, so that a gaseous refrigerant is formed, the gaseous refrigerant can directly return to the first air return port of the compressor after defrosting the second heat exchanger and enter the compressor, the probability of liquid impact of the compressor is reduced, and the stability of the compressor in the defrosting process is improved.

Because the second heat exchanger is defrosted and the refrigerant does not need to pass through the first heat exchanger, the probability of condensation generated by the shell of the refrigeration equipment attached to the first heat exchanger can be reduced, and the quality of the refrigeration equipment is further improved.

And realize the defrosting to the second heat exchanger through setting up shunt valve and first pipeline cooperation for heat transfer assembly need not reverse operation when defrosting, has reduced the required part of heat transfer assembly reverse operation, and then has simplified heat transfer assembly's structure, reduces heat transfer assembly's cost.

Specifically, when the heat exchange assembly performs refrigeration, the first heat exchanger can serve as a condenser, and the second heat exchanger can serve as an evaporator, and the heat exchange assembly is arranged in a refrigeration compartment of the refrigeration equipment, such as a refrigeration compartment of the refrigeration equipment or a refrigeration compartment of the refrigeration equipment.

After the refrigerant is compressed by the compressor, the formed high-temperature and high-pressure refrigerant enters the pipeline, the first end of the flow dividing valve is controlled to be communicated with the second end of the flow dividing valve, the first end of the flow dividing valve is disconnected with the third end of the flow dividing valve, and the second end of the flow dividing valve is disconnected with the third end of the flow dividing valve.

The refrigerant enters the first heat exchanger, the first heat exchanger serves as a condenser, and the high-temperature and high-pressure refrigerant exchanges heat with air outside the heat exchange assembly in the first heat exchanger and then is cooled.

The refrigerant discharged by the first heat exchanger passes through the first end of the flow dividing valve and the second end of the flow dividing valve, then enters the second heat exchanger after passing through the first throttling component, the second heat exchanger is used as an evaporator, and the refrigerant absorbs heat through evaporation in the second heat exchanger, so that the refrigeration of a compartment of refrigeration equipment is realized.

The refrigerant evaporated and absorbed in the second heat exchanger enters the compressor through the first air return port.

Specifically, when the second heat exchanger needs to be defrosted, the refrigerant is compressed by the compressor to form a high-temperature high-pressure refrigerant which enters the pipeline.

The first end of the control diverter valve is disconnected from the second end of the diverter valve, the first end of the diverter valve is disconnected from the third end of the diverter valve, and the second end of the diverter valve is communicated with the third end of the diverter valve.

The high-temperature and high-pressure refrigerant discharged by the compressor sequentially passes through the first pipeline, the third end of the flow dividing valve, the second end of the flow dividing valve and the first throttling part to enter the second heat exchanger, and as the high-temperature and high-pressure refrigerant discharged by the compressor enters the second heat exchanger under the condition of not passing through the first heat exchanger, the refrigerant entering the second heat exchanger has a certain temperature, and then the refrigerant entering the second heat exchanger can defrost the second heat exchanger, and the refrigerant after defrosting the second heat exchanger is returned to the compressor through the first air return port of the compressor.

Specifically, the connection between the first heat exchanger and the exhaust port may be a direct connection between the first heat exchanger and the exhaust port, or an indirect connection between the first heat exchanger and the exhaust port, for example, through a pipeline.

The first end of the diverter valve may be directly connected to the first heat exchanger, or the first end of the diverter valve may be indirectly connected to the first heat exchanger, for example, through a pipeline.

The first throttling element may be connected to the second end of the diverter valve either directly or indirectly, e.g. via a pipe connection.

The compressor, the first heat exchanger, the flow dividing valve, the first throttling component, the second heat exchanger, the first pipeline and other components can be directly connected or indirectly connected, and the indirect connection can be connected through the pipeline or other components.

In addition, the heat exchange assembly in the technical scheme provided by the utility model can also have the following additional technical characteristics:

in one technical scheme of the utility model, the compressor further comprises a second air return port, and the heat exchange assembly further comprises a second throttling component and a third heat exchanger; the second throttling component is connected with the fourth end of the flow dividing valve; the third heat exchanger is connected with the second throttling component and is connected with the second air return port.

In the technical scheme, the compressor further comprises a second air return port, namely, the compressor is provided with an exhaust port, a first air return port and a second air return port, a refrigerant compressed by the compressor can enter a pipeline of the heat exchange assembly through the exhaust port, after flowing through each part of the pipeline, the refrigerant can enter the compressor through the first air return port and the second air return port, and after the refrigerant entering through the first air return port and the second air return port is compressed again by the compressor, the refrigerant enters the pipeline of the heat exchange assembly through the exhaust port, so that circulation is formed. The compressor can return air through the first air return port and the second air return port simultaneously, so that independent circulation of the second heat exchanger and the third heat exchanger is realized.

The heat exchange assembly further comprises a second throttling component and a third heat exchanger, the second throttling component is connected with the fourth end of the flow dividing valve, the third heat exchanger is connected with the second throttling component and is connected with the second air return port, when defrosting is carried out on the third heat exchanger, the first pipeline is matched with the flow dividing valve, high-temperature and high-pressure refrigerant discharged from the air outlet of the compressor can flow into the third heat exchanger through the first pipeline, the third end of the flow dividing valve and the second end of the flow dividing valve, and because the high-temperature and high-pressure refrigerant does not exchange heat with the external environment of the refrigeration equipment through the first heat exchanger before entering the third heat exchanger, the refrigerant entering the third heat exchanger still has a certain temperature, defrosting is carried out on the third heat exchanger, and then the refrigeration capacity of the refrigeration equipment is improved, the turn-on probability of the refrigeration equipment is reduced, and the energy consumption of the whole refrigeration equipment is reduced.

The third heat exchanger is defrosted through the refrigerant with a certain temperature, heat is transmitted from the inside of the third heat exchanger to the surface of the third heat exchanger, and when defrosting is achieved, the heat cannot be directly radiated into the room of the refrigerating equipment, so that the influence of defrosting of the third heat exchanger on the room of the refrigerating equipment is reduced, the temperature fluctuation in the room of the refrigerating equipment is reduced, and the freezing and/or refrigerating effect in the room of the refrigerating equipment is improved.

When defrosting is performed on the third heat exchanger, the refrigerant also passes through the second throttling part and then enters the third heat exchanger after passing through the first pipeline, so that the high-temperature and high-pressure liquid refrigerant can be throttled by the second throttling part to further form a gaseous refrigerant, the gaseous refrigerant can directly return to the first air return port of the compressor after defrosting is performed on the third heat exchanger and enter the compressor, the probability of liquid impact of the compressor is reduced, and the stability of the compressor in the defrosting process is improved.

Specifically, when the heat exchange assembly is used for refrigerating, the first heat exchanger can be used as a condenser, the second heat exchanger can be used as a freezing evaporator and arranged in a freezing compartment of the refrigerating equipment, and the third heat exchanger is used as a refrigerating evaporator and arranged in the refrigerating compartment of the refrigerating equipment.

After the refrigerant is compressed by the compressor, the formed high-temperature and high-pressure refrigerant enters the pipeline, the first end of the control flow dividing valve is communicated with the second end of the flow dividing valve, the first end of the flow dividing valve is disconnected with the third end of the flow dividing valve, and the first end of the flow dividing valve is communicated with the fourth end of the flow dividing valve.

The refrigerant enters the first heat exchanger, the first heat exchanger serves as a condenser, and the high-temperature and high-pressure refrigerant exchanges heat with air outside the heat exchange assembly in the first heat exchanger and then is cooled.

After passing through the first end of the flow dividing valve and the second end of the flow dividing valve, the refrigerant after partial cooling enters the second heat exchanger through the first throttling part, the second heat exchanger is used as a freezing evaporator, and the refrigerant absorbs heat through evaporation in the second heat exchanger, so that the refrigeration of a compartment of the refrigeration equipment is realized. The refrigerant evaporated and absorbed in the second heat exchanger enters the compressor through the first air return port.

The other part of cooled refrigerant passes through the first end of the flow dividing valve and the fourth end of the flow dividing valve, then passes through the second throttling component and enters the third heat exchanger, the third heat exchanger is used as a refrigeration evaporator, and the refrigerant absorbs heat through evaporation in the third heat exchanger, so that the refrigeration of a compartment of the refrigeration equipment is realized. The refrigerant evaporated and absorbed in the third heat exchanger enters the compressor through the second air return port.

Specifically, when the third heat exchanger needs to be defrosted, the refrigerant is compressed by the compressor to form a high-temperature high-pressure refrigerant which enters the pipeline.

The third end of the control shunt valve is communicated with the fourth end of the shunt valve, the first end of the shunt valve is disconnected with the third end of the shunt valve, and the second end of the shunt valve is disconnected with the third end of the shunt valve.

The high-temperature and high-pressure refrigerant discharged by the compressor sequentially passes through the first pipeline, the third end of the flow dividing valve, the fourth end of the flow dividing valve and the second throttling part to enter the third heat exchanger, and the high-temperature and high-pressure refrigerant discharged by the compressor enters the third heat exchanger without passing through the first heat exchanger, so the refrigerant entering the third heat exchanger has a certain temperature, and further the refrigerant entering the third heat exchanger can defrost the third heat exchanger, and the refrigerant after defrosting the third heat exchanger is returned to the compressor through the second air return port of the compressor.

Specifically, when the second heat exchanger and the third heat exchanger are required to be turned on for defrosting, the refrigerant is compressed by the compressor, and then the formed high-temperature and high-pressure refrigerant enters the pipeline.

The third end of the control shunt valve is communicated with the fourth end of the shunt valve, the first end of the shunt valve is disconnected from the third end of the shunt valve, and the second end of the shunt valve is communicated with the third end of the shunt valve.

The high-temperature and high-pressure refrigerant discharged by part of the compressor sequentially passes through the first pipeline, the third end of the flow dividing valve, the second end of the flow dividing valve and the first throttling part and enters the second heat exchanger, and as the high-temperature and high-pressure refrigerant discharged by the compressor enters the second heat exchanger under the condition of not passing through the first heat exchanger, the refrigerant entering the second heat exchanger has a certain temperature, and then the refrigerant entering the second heat exchanger can defrost the second heat exchanger, and the refrigerant after defrosting the second heat exchanger is returned to the compressor through the first air return port of the compressor.

The high-temperature and high-pressure refrigerant discharged by the other part of the compressors sequentially passes through the first pipeline, the third end of the flow dividing valve, the fourth end of the flow dividing valve and the second throttling part to enter the third heat exchanger, and the high-temperature and high-pressure refrigerant discharged by the compressors enters the third heat exchanger under the condition of not passing through the first heat exchanger, so that the refrigerant entering the third heat exchanger has a certain temperature, and further the refrigerant entering the third heat exchanger can defrost the third heat exchanger, and the refrigerant after defrosting the third heat exchanger is returned to the compressor through the second air return port of the compressor.

In one aspect of the utility model, the compressor includes an air return chamber, the first air return port is in communication with the air return chamber, and the second air return port is in communication with the air return chamber.

In the technical scheme, as the compressor returns air through the first air return port and the second air return port simultaneously, medium-pressure refrigerant can enter the compressor through the second air return port, and the energy consumption and the compression ratio required by the medium-pressure refrigerant compressed into high-pressure refrigerant again are smaller than those required by the low-pressure refrigerant compressed into the high-pressure refrigerant again, so that the energy consumption of the compressor is reduced, and the efficiency of the compressor is improved.

In one aspect of the utility model, the third heat exchanger is a refrigerated evaporator.

In the technical scheme, the third heat exchanger is a refrigeration evaporator, so that refrigeration of the refrigeration compartment of the refrigeration equipment can be realized.

In one technical scheme of the utility model, the first heat exchanger is a condenser; the second heat exchanger is a freezing evaporator.

In the technical scheme, the first heat exchanger is a condenser and can be arranged on a shell of the refrigeration equipment, so that heat exchange with air outside the refrigeration equipment is realized. The second heat exchanger is a freezing evaporator, and can realize the refrigeration of the freezing compartment of the refrigeration equipment.

In one technical scheme of the utility model, the heat exchange assembly further comprises a second pipeline, one end of the second pipeline is connected with the exhaust port, and the other end of the second pipeline is connected with the first heat exchanger.

In this technical scheme, heat exchange assembly still includes the second pipeline, and the both ends of second pipeline are connected with gas vent and first heat exchanger respectively, and then the installation of gas vent and first heat exchanger promotes the stability of heat exchange assembly in the course of the work.

In one embodiment of the utility model, the first end of the first line is connected to the second line.

In this technical scheme, the first end and the second pipeline of first pipeline are connected, and then install and fix the first end of first pipeline through the second pipeline, promote the stability of first pipeline in the course of the work.

In one embodiment of the utility model, the first throttle element is a capillary tube or a throttle valve.

In the technical scheme, the first throttling component is a capillary tube or a throttling valve, so that the structure of the heat exchange assembly is simplified, the cost of the heat exchange assembly is reduced, and the stability of the heat exchange assembly in the operation process is improved.

Further, the second restriction member is a capillary tube or a restriction valve.

In one aspect of the present utility model, the diverter valve is a four-way diverter valve.

In the technical scheme, the flow dividing valve is a four-way reversing valve, so that the heat exchange assembly can be switched among three defrosting modes of independent defrosting of the second heat exchanger and independent defrosting of the third heat exchanger, simultaneous defrosting of the second heat exchanger and the third heat exchanger, the heat exchange assembly can be selected according to actual defrosting needs of the second heat exchanger and the third heat exchanger, unnecessary defrosting is avoided, energy consumption of the heat exchange assembly during defrosting is further reduced, and defrosting efficiency of the heat exchange assembly is improved.

The second aspect of the present utility model provides a refrigeration apparatus comprising a heat exchange assembly according to any of the above-mentioned aspects, whereby the refrigeration apparatus has all the advantages of the heat exchange assembly according to any of the above-mentioned aspects.

In one aspect of the utility model, the refrigeration appliance includes a refrigerator, freezer, wine cabinet or display case.

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

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 shows a schematic structural view of a heat exchange assembly according to an embodiment of the present utility model.

The correspondence between the reference numerals and the component names in fig. 1 is:

110 compressor, 112 discharge port, 114 first return port, 116 second return port, 120 first heat exchanger, 122 diverter valve, 124 first throttling element, 126 second heat exchanger, 128 first conduit, 130 second throttling element, 132 third heat exchanger, 134 second conduit.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.

A heat exchange assembly and a refrigeration apparatus according to some embodiments of the present utility model are described below with reference to fig. 1.

In one embodiment of the present utility model, as shown in FIG. 1, a heat exchange assembly is provided that includes a compressor 110, a first heat exchanger 120, a diverter valve 122, a first throttling element 124, a second heat exchanger 126, and a first conduit 128; the compressor 110 includes a discharge port 112 and a first return port 114; the first heat exchanger 120 is connected to the exhaust port 112; a first end of the diverter valve 122 is connected to the first heat exchanger 120; the first throttle member 124 is connected to the second end of the flow dividing valve 122; the second heat exchanger 126 is connected to the first throttle member 124 and to the first return port 114; a first end of the first conduit 128 is connected to the exhaust port 112 and a second end of the first conduit 128 is connected to a third end of the diverter valve 122.

In this embodiment, the heat exchange assembly includes a compressor 110, the compressor 110 includes an exhaust port 112 and a first return port 114, the refrigerant compressed by the compressor 110 can enter the pipeline of the heat exchange assembly from the exhaust port 112, after flowing through each component in the pipeline, the refrigerant can enter the interior of the compressor 110 through the first return port 114, and after recompression of the refrigerant entering through the first return port 114 by the compressor 110, the refrigerant enters the pipeline of the heat exchange assembly through the exhaust port 112, so as to form a cycle.

The heat exchange assembly further comprises a first heat exchanger 120, a splitter valve 122, a first throttling element 124 and a second heat exchanger 126, wherein the first heat exchanger 120 is connected with the exhaust port 112, a first end of the splitter valve 122 is connected with the first heat exchanger 120, the first throttling element 124 is connected with a second end of the splitter valve 122, and the second heat exchanger 126 is connected with the first throttling element 124 and is connected with the first air return port 114, so that a circulation flow path is formed, and the refrigerant is used for refrigerating each compartment of the refrigeration equipment.

The heat exchange assembly further comprises a first pipeline 128, a first end of the first pipeline 128 is connected with the exhaust port 112, a second end of the first pipeline 128 is connected with a third end of the flow dividing valve 122, when the second heat exchanger 126 is defrosted, the first pipeline 128 is matched with the flow dividing valve 122, so that high-temperature and high-pressure refrigerant discharged from the exhaust port 112 of the compressor 110 can flow into the second heat exchanger 126 through the first pipeline 128, the third end of the flow dividing valve 122 and the second end of the flow dividing valve 122, and because the high-temperature and high-pressure refrigerant does not exchange heat with the external environment of the refrigeration equipment through the first heat exchanger 120 before entering the second heat exchanger 126, the refrigerant entering the second heat exchanger 126 still has a certain temperature, and defrosting of the second heat exchanger 126 is achieved, so that the refrigeration capacity of the refrigeration equipment is improved, the opening probability of the refrigeration equipment is reduced, and the energy consumption of the whole refrigeration equipment is reduced.

The second heat exchanger 126 is defrosted through the refrigerant with a certain temperature, heat is transmitted from the inside of the second heat exchanger 126 to the surface of the second heat exchanger 126, and when defrosting is achieved, the heat cannot be directly radiated into the room of the refrigerating equipment, so that the influence of defrosting of the second heat exchanger 126 on the room of the refrigerating equipment is reduced, the temperature fluctuation in the room of the refrigerating equipment is reduced, and the freezing and/or refrigerating effect in the room of the refrigerating equipment is improved.

Since the refrigerant passes through the first throttling component 124 and then enters the second heat exchanger 126 after passing through the first pipeline 128 when defrosting the second heat exchanger 126, the high-temperature and high-pressure liquid refrigerant is throttled by the first throttling component 124, so that a gaseous refrigerant is formed, the gaseous refrigerant can directly return to the first air return port 114 of the compressor 110 after defrosting the second heat exchanger 126 and enter the compressor 110, the probability of liquid impact of the compressor 110 is reduced, and the stability of the compressor 110 in the defrosting process is improved.

Because the refrigerant does not need to pass through the first heat exchanger 120 while defrosting the second heat exchanger 126, the probability of condensation generated by the shell of the refrigeration equipment attached to the first heat exchanger 120 can be reduced, and the quality of the refrigeration equipment is further improved.

And through setting up shunt valve 122 and first pipeline 128 cooperation realization to the defrosting of second heat exchanger 126 for heat exchange assembly need not reverse operation when defrosting, has reduced the required part of heat exchange assembly reverse operation, and then has simplified heat exchange assembly's structure, reduces heat exchange assembly's cost.

Specifically, the heat exchange assembly may be configured to act as a condenser and the second heat exchanger 126 may be configured to act as an evaporator when performing refrigeration, and may be disposed in a refrigeration compartment of a refrigeration appliance, such as a refrigeration compartment of a refrigeration appliance or a refrigeration compartment of a refrigeration appliance.

After the refrigerant is compressed by the compressor 110, the formed high-temperature and high-pressure refrigerant enters the pipeline, the first end of the diverter valve 122 is controlled to be communicated with the second end of the diverter valve 122, the first end of the diverter valve 122 is disconnected from the third end of the diverter valve 122, and the second end of the diverter valve 122 is disconnected from the third end of the diverter valve 122.

The refrigerant enters the first heat exchanger 120, the first heat exchanger 120 serves as a condenser, and the high-temperature and high-pressure refrigerant exchanges heat with air outside the heat exchange assembly in the first heat exchanger 120 and then is cooled.

The refrigerant discharged from the first heat exchanger 120 passes through the first end of the flow dividing valve 122 and the second end of the flow dividing valve 122, then passes through the first throttling component 124, and enters the second heat exchanger 126, the second heat exchanger 126 serves as an evaporator, and the refrigerant evaporates and absorbs heat in the second heat exchanger 126, so that the refrigeration of the compartment of the refrigeration equipment is realized.

The refrigerant evaporated and absorbed in the second heat exchanger 126 enters the compressor 110 through the first return port 114.

Specifically, when the second heat exchanger 126 needs to be defrosted, the refrigerant is compressed by the compressor 110, and then the formed high-temperature and high-pressure refrigerant enters the pipeline.

The first end of the shunt valve 122 is controlled to be disconnected from the second end of the shunt valve 122, the first end of the shunt valve 122 is disconnected from the third end of the shunt valve 122, and the second end of the shunt valve 122 is connected to the third end of the shunt valve 122.

The high-temperature and high-pressure refrigerant discharged from the compressor 110 sequentially passes through the first pipeline 128, the third end of the flow dividing valve 122, the second end of the flow dividing valve 122 and the first throttling part 124 to enter the second heat exchanger 126, and the high-temperature and high-pressure refrigerant discharged from the compressor 110 enters the second heat exchanger 126 without passing through the first heat exchanger 120, so that the refrigerant entering the second heat exchanger 126 has a certain temperature, and the refrigerant entering the second heat exchanger 126 can defrost the second heat exchanger 126, and the refrigerant after defrosting the second heat exchanger 126 has the first return port 114 of the compressor 110 and returns to the compressor 110.

Specifically, the connection between the first heat exchanger 120 and the exhaust port 112 may be that the first heat exchanger 120 is directly connected to the exhaust port 112, or that the first heat exchanger 120 is indirectly connected to the exhaust port 112, for example, through a pipeline.

The first end of the diverter valve 122 may be directly connected to the first heat exchanger 120, or the first end of the diverter valve 122 may be indirectly connected to the first heat exchanger 120, for example, through a pipeline.

The first throttling element 124 may be connected to the second end of the diverter valve 122 by directly connecting the first throttling element 124 to the second end of the diverter valve 122, or indirectly connecting the first throttling element 124 to the second end of the diverter valve 122, such as via a pipe connection.

The connections between the compressor 110, the first heat exchanger 120, the splitter valve 122, the first throttling element 124, the second heat exchanger 126, the first conduit 128, and the like may be direct connections or indirect connections, where the indirect connections may be through a conduit connection or may be through other components.

The present embodiment provides a heat exchange assembly, which further includes the following technical features in addition to the technical features of the foregoing embodiments.

As shown in fig. 1, the compressor 110 further includes a second return port 116, and the heat exchange assembly further includes a second throttling member 130 and a third heat exchanger 132; the second restriction member 130 is connected to a fourth end of the diverter valve 122; the third heat exchanger 132 is connected to the second throttle member 130 and to the second return air port 116.

In this embodiment, the compressor 110 further includes a second air return port 116, that is, the compressor 110 is provided with an air outlet 112, a first air return port 114 and a second air return port 116, the refrigerant compressed by the compressor 110 can have the air outlet 112 enter the pipeline of the heat exchange assembly, after flowing through each component in the pipeline, the refrigerant can enter the compressor 110 through the first air return port 114 and the second air return port 116, and after recompression of the refrigerant entering through the first air return port 114 and the second air return port 116, the refrigerant enters the pipeline of the heat exchange assembly through the air outlet 112, so as to form a cycle. Since the compressor 110 can return air simultaneously through the first and second return air ports 114 and 116, independent circulation of the second and third heat exchangers 126 and 132 is achieved.

The heat exchange assembly further comprises a second throttling component 130 and a third heat exchanger 132, the second throttling component 130 is connected with the fourth end of the flow dividing valve 122, the third heat exchanger 132 is connected with the second throttling component 130 and is connected with the second air return port 116, when the third heat exchanger 132 is defrosted, the first pipeline 128 is matched with the flow dividing valve 122, so that high-temperature and high-pressure refrigerant discharged from the air outlet 112 of the compressor 110 can flow into the third heat exchanger 132 through the first pipeline 128, the third end of the flow dividing valve 122 and the second end of the flow dividing valve 122, and because the high-temperature and high-pressure refrigerant does not exchange heat with the external environment of the refrigeration equipment through the first heat exchanger 120 before entering the third heat exchanger 132, the refrigerant entering the third heat exchanger 132 still has a certain temperature, the defrosting of the third heat exchanger 132 is realized, the refrigeration capacity of the refrigeration equipment is improved, the opening probability of the refrigeration equipment is reduced, and the energy consumption of the whole refrigeration equipment is reduced.

The third heat exchanger 132 is defrosted through the refrigerant with a certain temperature, heat is transmitted from the inside of the third heat exchanger 132 to the surface of the third heat exchanger 132, and when defrosting is achieved, the heat cannot be directly radiated into the room of the refrigerating equipment, so that the influence of defrosting of the third heat exchanger 132 on the room of the refrigerating equipment is reduced, the temperature fluctuation in the room of the refrigerating equipment is reduced, and the freezing and/or refrigerating effect in the room of the refrigerating equipment is improved.

Because the refrigerant passes through the first pipeline 128 and then passes through the second throttling component 130 before entering the third heat exchanger 132 when defrosting the third heat exchanger 132, the high-temperature and high-pressure liquid refrigerant is throttled by the second throttling component 130, so that a gaseous refrigerant is formed, the gaseous refrigerant can directly return to the first air return port 114 of the compressor 110 after defrosting the third heat exchanger 132 and enter the compressor 110, the probability of liquid impact of the compressor 110 is reduced, and the stability of the compressor 110 in the defrosting process is improved.

Specifically, when the heat exchange assembly performs refrigeration, the first heat exchanger 120 may be used as a condenser, the second heat exchanger 126 may be used as a freezing evaporator, and disposed in a freezing compartment of the refrigeration apparatus, and the third heat exchanger 132 may be used as a refrigerating evaporator, and disposed in a refrigerating compartment of the refrigeration apparatus.

After the refrigerant is compressed by the compressor 110, the formed high-temperature and high-pressure refrigerant enters the pipeline, the first end of the diverter valve 122 is controlled to be communicated with the second end of the diverter valve 122, the first end of the diverter valve 122 is disconnected from the third end of the diverter valve 122, and the first end of the diverter valve 122 is communicated with the fourth end of the diverter valve 122.

The refrigerant enters the first heat exchanger 120, the first heat exchanger 120 serves as a condenser, and the high-temperature and high-pressure refrigerant exchanges heat with air outside the heat exchange assembly in the first heat exchanger 120 and then is cooled.

After passing through the first end of the diverter valve 122 and the second end of the diverter valve 122, part of the cooled refrigerant enters the second heat exchanger 126 after passing through the first throttling part 124, the second heat exchanger 126 serves as a freezing evaporator, and the refrigerant absorbs heat through evaporation in the second heat exchanger 126, so that the refrigeration of a compartment of the refrigeration equipment is realized. The refrigerant evaporated and absorbed in the second heat exchanger 126 enters the compressor 110 through the first return port 114.

The other part of cooled refrigerant passes through the first end of the flow dividing valve 122 and the fourth end of the flow dividing valve 122, passes through the second throttling component 130 and enters the third heat exchanger 132, the third heat exchanger 132 serves as a refrigerating evaporator, and the refrigerant absorbs heat through evaporation in the third heat exchanger 132, so that the refrigeration of a compartment of the refrigeration equipment is realized. The refrigerant evaporated and absorbed in the third heat exchanger 132 enters the compressor 110 through the second return port 116.

Specifically, when the third heat exchanger 132 needs to be defrosted, the refrigerant is compressed by the compressor 110, and then the formed high-temperature and high-pressure refrigerant enters the pipeline.

The third end of the shunt valve 122 is controlled to be in communication with the fourth end of the shunt valve 122, the first end of the shunt valve 122 is disconnected from the third end of the shunt valve 122, and the second end of the shunt valve 122 is disconnected from the third end of the shunt valve 122.

The high-temperature and high-pressure refrigerant discharged from the compressor 110 sequentially passes through the first pipeline 128, the third end of the flow dividing valve 122, the fourth end of the flow dividing valve 122 and the second throttling part 130 to enter the third heat exchanger 132, and the high-temperature and high-pressure refrigerant discharged from the compressor 110 enters the third heat exchanger 132 without passing through the first heat exchanger 120, so that the refrigerant entering the third heat exchanger 132 has a certain temperature, and further the refrigerant entering the third heat exchanger 132 can defrost the third heat exchanger 132, and the refrigerant after defrosting the third heat exchanger 132 has the second return port 116 of the compressor 110 and returns to the compressor 110.

Specifically, as shown in fig. 1, when the second heat exchanger 126 and the third heat exchanger 132 are required to be turned on for defrosting, the refrigerant is compressed by the compressor 110, and then the formed high-temperature and high-pressure refrigerant enters the pipeline and flows in the direction shown by the arrow in fig. 1.

The third end of the shunt valve 122 is controlled to be in communication with the fourth end of the shunt valve 122, the first end of the shunt valve 122 is disconnected from the third end of the shunt valve 122, and the second end of the shunt valve 122 is controlled to be in communication with the third end of the shunt valve 122.

The high-temperature and high-pressure refrigerant discharged from the compressor 110 sequentially passes through the first pipeline 128, the third end of the flow dividing valve 122, the second end of the flow dividing valve 122 and the first throttling part 124 to enter the second heat exchanger 126, and the high-temperature and high-pressure refrigerant discharged from the compressor 110 enters the second heat exchanger 126 without passing through the first heat exchanger 120, so that the refrigerant entering the second heat exchanger 126 has a certain temperature, the second heat exchanger 126 can be defrosted by the refrigerant entering the second heat exchanger 126, and the refrigerant after defrosting the second heat exchanger 126 is returned to the compressor 110 by the first return port 114 of the compressor 110.

The high-temperature and high-pressure refrigerant discharged from the other part of the compressor 110 sequentially passes through the first pipeline 128, the third end of the flow dividing valve 122, the fourth end of the flow dividing valve 122 and the second throttling part 130 to enter the third heat exchanger 132, and the high-temperature and high-pressure refrigerant discharged from the compressor 110 enters the third heat exchanger 132 without passing through the first heat exchanger 120, so that the refrigerant entering the third heat exchanger 132 has a certain temperature, and further the refrigerant entering the third heat exchanger 132 can defrost the third heat exchanger 132, and the refrigerant after defrosting the third heat exchanger 132 returns to the compressor 110 through the second air return port 116 of the compressor 110.

The present embodiment provides a heat exchange assembly, which further includes the following technical features in addition to the technical features of the foregoing embodiments.

The compressor 110 includes an air return cavity with which the first air return 114 communicates and with which the second air return 116 communicates.

In this embodiment, since the compressor 110 returns air through the first air return port 114 and the second air return port 116 at the same time, the medium-pressure refrigerant can enter the compressor 110 through the second air return port 116, and the energy consumption and the compression ratio required for re-compressing the medium-pressure refrigerant into the high-pressure refrigerant are smaller than those required for re-compressing the low-pressure refrigerant into the high-pressure refrigerant, so that the energy consumption of the compressor 110 is reduced, and the efficiency of the compressor 110 is improved.

The present embodiment provides a heat exchange assembly, which further includes the following technical features in addition to the technical features of the foregoing embodiments.

The third heat exchanger 132 is a refrigerated evaporator.

In this embodiment, the third heat exchanger 132 is a refrigeration evaporator, which can effect refrigeration of a refrigerated compartment of a refrigeration appliance.

The present embodiment provides a heat exchange assembly, which further includes the following technical features in addition to the technical features of the foregoing embodiments.

The first heat exchanger 120 is a condenser; the second heat exchanger 126 is a freeze evaporator.

In this embodiment, the first heat exchanger 120 is a condenser, and may be disposed on a housing of the refrigeration apparatus, so as to exchange heat with air outside the refrigeration apparatus. The second heat exchanger 126 is a refrigeration evaporator, and can realize refrigeration of a refrigeration compartment of the refrigeration equipment.

The present embodiment provides a heat exchange assembly, which further includes the following technical features in addition to the technical features of the foregoing embodiments.

As shown in fig. 1, the heat exchange assembly further includes a second pipe 134, one end of the second pipe 134 is connected to the exhaust port 112, and the other end is connected to the first heat exchanger 120.

In this embodiment, the heat exchange assembly further includes a second pipeline 134, two ends of the second pipeline 134 are respectively connected with the exhaust port 112 and the first heat exchanger 120, and then the exhaust port 112 and the first heat exchanger 120 are installed, so that stability of the heat exchange assembly in the working process is improved.

The present embodiment provides a heat exchange assembly, which further includes the following technical features in addition to the technical features of the foregoing embodiments.

As shown in fig. 1, a first end of the first conduit 128 is connected to a second conduit 134.

In this embodiment, the first end of the first pipe 128 is connected to the second pipe 134, and the first end of the first pipe 128 is further installed and fixed by the second pipe 134, so as to improve the stability of the first pipe 128 during operation.

The present embodiment provides a heat exchange assembly, which further includes the following technical features in addition to the technical features of the foregoing embodiments.

The first restriction 124 is a capillary tube or a throttle valve.

In this embodiment, the first throttling element 124 is a capillary tube or a throttle valve, which simplifies the structure of the heat exchange assembly, reduces the cost of the heat exchange assembly, and improves the stability of the heat exchange assembly during operation.

Further, the second restriction 130 is a capillary tube or a throttle valve.

The present embodiment provides a heat exchange assembly, which further includes the following technical features in addition to the technical features of the foregoing embodiments.

The diverter valve 122 is a four-way reversing valve.

In this embodiment, the diverter valve 122 is a four-way reversing valve, so that the heat exchange assembly can switch among three defrosting modes of defrosting the second heat exchanger 126 alone, defrosting the third heat exchanger 132 alone, and defrosting the second heat exchanger 126 and the third heat exchanger 132 simultaneously, so that the heat exchange assembly can be selected according to the actual defrosting needs of the second heat exchanger 126 and the third heat exchanger 132, unnecessary defrosting is avoided, energy consumption of defrosting of the heat exchange assembly is reduced, and defrosting efficiency of the heat exchange assembly is improved.

In one embodiment of the utility model, a refrigeration appliance is provided comprising a heat exchange assembly as in any of the embodiments described above, and therefore provides all of the benefits of a heat exchange assembly as in any of the embodiments described above.

The refrigeration equipment comprises a refrigerator, a freezer, a wine cabinet or a showcase.

In the claims, specification and drawings of the present utility model, the term "plurality" means two or more, unless explicitly defined otherwise, the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present utility model and making the description process easier, and not for the purpose of indicating or implying that the device or element in question must have the particular orientation described, be constructed and operated in the particular orientation, and therefore such description should not be construed as limiting the present utility model; the terms "connected," "mounted," "secured," and the like are to be construed broadly, and may be, for example, a fixed connection between a plurality of objects, a removable connection between a plurality of objects, or an integral connection; the objects may be directly connected to each other or indirectly connected to each other through an intermediate medium. The specific meaning of the terms in the present utility model can be understood in detail from the above data by those of ordinary skill in the art.

In the claims, specification, and drawings of the present utility model, the descriptions of terms "one embodiment," "some embodiments," "particular embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In the claims, specification and drawings of the present utility model, the schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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

Claims (11)

1. A heat exchange assembly, comprising:

a compressor including a discharge port and a first return port;

the first heat exchanger is connected with the exhaust port;

a diverter valve, a first end of which is connected to the first heat exchanger;

a first throttling element connected to the second end of the diverter valve;

the second heat exchanger is connected with the first throttling component and the first air return port;

the first end of the first pipeline is connected with the exhaust port, and the second end of the first pipeline is connected with the third end of the flow dividing valve.

2. The heat exchange assembly of claim 1, wherein the compressor further comprises a second return port, the heat exchange assembly further comprising:

a second restriction member connected to a fourth end of the diverter valve;

and the third heat exchanger is connected with the second throttling component and the second air return port.

3. The heat exchange assembly of claim 2 wherein the compressor includes a return air chamber, the first return air port being in communication with the return air chamber, the second return air port being in communication with the return air chamber.

4. The heat exchange assembly of claim 2 wherein the third heat exchanger is a refrigerated evaporator.

5. The heat exchange assembly of claim 1 wherein the first heat exchanger is a condenser;

the second heat exchanger is a freezing evaporator.

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

and one end of the second pipeline is connected with the exhaust port, and the other end of the second pipeline is connected with the first heat exchanger.

7. The heat exchange assembly of claim 6 wherein the first end of the first conduit is connected to the second conduit.

8. The heat exchange assembly of any one of claims 1 to 7, wherein the first throttling component is a capillary tube or a throttle valve.

9. The heat exchange assembly of any one of claims 1 to 7, wherein the diverter valve is a four-way reversing valve.

10. A refrigeration appliance, comprising: a heat exchange assembly as claimed in any one of claims 1 to 9.

11. The refrigeration device of claim 10, wherein the refrigeration device comprises a refrigerator, a freezer, a wine cabinet, or a display case.