CN203671790U - Air conditioner and heat exchange system thereof - Google Patents

Abstract

The utility model discloses an air conditioner and a heat exchange system thereof. The heat exchange system of the air conditioner comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger and a radiator. The heat exchanger communicates with the indoor heat exchanger to form a refrigerant conduction loop, a throttling element is connected between the outdoor heat exchanger and the indoor heat exchanger, and the radiator is close to the compressor The electric control element of the machine; wherein, the outdoor heat exchanger is respectively provided with a refrigerant outlet and a refrigerant return port, and the radiator is connected between the refrigerant outlet and the refrigerant return port, so that all The refrigerant in the outdoor heat exchanger returns to the outdoor heat exchanger after passing through the radiator. The heat exchange system of the air conditioner according to the embodiment of the utility model has the advantages of good heat dissipation effect, high-frequency operation in a high temperature environment, reliable cooling effect, and improved comfort of the air conditioner.

Description

Air conditioner and its heat exchange system

technical field

The utility model relates to the technical field of electric appliance manufacturing, in particular to a heat exchange system of an air conditioner and an air conditioner with the heat exchange system of the air conditioner.

Background technique

With the development of air conditioning technology, inverter air conditioners have been widely used in the industry. However, in the outdoor electronic control system of the inverter air conditioner, the inverter module generates a large amount of heat, which limits the high-frequency operation of the compressor in a high-temperature environment. The heat dissipation method in the related art is mostly a metal heat sink to dissipate heat through air convection. However, in the high temperature outdoor environment, the heat dissipation effect of this cooling method is poor, and the heating of the electronic control components can only be reduced by reducing the operating frequency of the compressor to ensure the normal operation of the air conditioner, which greatly affects the outdoor use of the inverter air conditioner. The cooling effect in the case of high temperature will affect the comfort of users.

Utility model content

The utility model aims to solve one of the above-mentioned technical problems in the related art at least to a certain extent. For this reason, an object of the present utility model is to propose a heat exchange system of an air conditioner, which has good heat dissipation effect, high-frequency operation in high temperature environment, reliable cooling effect, and can improve the performance of the air conditioner. The advantages of comfort and so on.

Another object of the present utility model is to provide an air conditioner with the heat exchange system of the air conditioner.

In order to achieve the above object, the first aspect of the utility model proposes a heat exchange system of an air conditioner, the heat exchange system of the air conditioner includes a compressor, an outdoor heat exchanger, an indoor heat exchanger and a radiator, and the compressor The machine is respectively connected with the outdoor heat exchanger and the indoor heat exchanger to form a refrigerant conduction loop, and a throttling element is connected between the outdoor heat exchanger and the indoor heat exchanger. The device is closely attached to the electric control element of the compressor; wherein, a refrigerant outlet and a refrigerant return port are respectively provided on the outdoor heat exchanger, and the radiator is connected to the refrigerant outlet and the refrigerant return port. between the ports, so that the refrigerant in the outdoor heat exchanger flows back to the outdoor heat exchanger after passing through the radiator.

According to the heat exchange system of the air conditioner of the present invention, by setting the radiator, and the outdoor heat exchanger is provided with the refrigerant outlet and the refrigerant return port, the radiator can be connected to The refrigerant outlet and the refrigerant return port, so that the refrigerant in the outdoor heat exchanger can be introduced into the radiator, so that the radiator uses the internal refrigerant to dissipate heat from the electronic control components, and The refrigerant after heat exchange by the electronic control element flows back into the outdoor heat exchanger. Compared with the way of heat dissipation through air convection, the heat exchange system of the air conditioner has a better heat dissipation effect on the electronic control components, which can reduce the limitation of the high-frequency operation of the compressor due to the calorific value in a high-temperature environment, It is not necessary to reduce the operating frequency of the compressor to reduce the heat generation of the electronic control element, which ensures the cooling effect of the air conditioner in a high temperature environment, and further ensures the use comfort of the air conditioner. Therefore, the heat exchange system of the air conditioner according to the present invention has the advantages of good heat dissipation effect, high frequency operation in high temperature environment, reliable cooling effect, and improved comfort of the air conditioner.

In addition, the heat exchange system of the air conditioner according to the present invention can also have the following additional technical features:

The radiator includes: a heat dissipation main substrate, the heat dissipation main substrate is closely attached to the electric control element of the compressor; a sub radiator, the sub radiator is arranged on the heat dissipation main substrate, and the sub radiator A refrigerant inlet communicated with the refrigerant outlet and a refrigerant outlet communicated with the refrigerant return port are formed in the device. This not only facilitates the installation of the radiator, but also has a sufficient heat exchange area between the radiator and the electronic control element.

The sub-radiator includes: a heat dissipation sub-base, the heat dissipation sub-base is arranged on the heat dissipation main substrate; a heat dissipation pipe, the heat dissipation pipe is arranged on the heat dissipation sub-base, the refrigerant inlet and the refrigerant outlet formed on the heat pipe. Therefore, the manufacture of the radiator can be facilitated while ensuring the heat dissipation effect of the radiator on the electronic control element.

The heat dissipation sub-base is provided with a groove, and the heat dissipation pipe is interference fit in the groove. This can not only improve the stability of the heat dissipation pipe on the heat dissipation sub-base, but also make the heat dissipation pipe closely contact with the heat dissipation sub-base.

Both the heat dissipation main substrate and the heat dissipation sub-base are metal plates, and the heat dissipation pipes are copper pipes or aluminum pipes. This allows the heat sink to have good mechanical strength and thermal conductivity.

The outdoor heat exchanger has a plurality of long U-tubes, the inlet of the outdoor heat exchanger and the outlet of the outdoor heat exchanger are respectively formed on two of the long U-tubes, the refrigerant outlet and the Refrigerant return ports are respectively formed on the other two long U tubes. Thus, the formation of the refrigerant outlet and the refrigerant return port can be facilitated, so that the refrigerant in the outdoor heat exchanger can be introduced into the radiator.

The refrigerant return port is formed on the first long U tube counted from the outlet of the outdoor heat exchanger, and the refrigerant outlet is formed on the second long U pipe counted from the outlet of the outdoor heat exchanger. On the U tube. In this way, the heat dissipation effect of the radiator on the electronic control element can be ensured.

The outlet of the compressor communicates with the inlet of the outdoor heat exchanger, the outlet of the outdoor heat exchanger communicates with the inlet of the indoor heat exchanger, and the outlet of the indoor heat exchanger communicates with the inlet of the compressor Import connection. In this way, a cooling-only frequency conversion heat exchange system can be formed.

The heat exchange system of the air conditioner also includes a four-way valve, the four-way valve has an inlet, a first flow port, a second flow port and a return port, and the outlet of the compressor communicates with the inlet of the four-way valve , the first flow port of the four-way valve communicates with the indoor heat exchanger, the second flow port of the four-way valve communicates with the outdoor heat exchanger, and the return port communicates with the inlet of the compressor connected. In this way, a cooling and heating type frequency conversion heat exchange system can be formed.

A second aspect of the present utility model provides an air conditioner, which includes the heat exchange system of the air conditioner according to the first aspect of the present utility model.

According to the air conditioner of the present invention, by using the heat exchange system of the air conditioner according to the first aspect of the present invention, it has the advantages of reliable cooling performance in outdoor high temperature environment, small loss of power and energy efficiency, and high comfort.

Description of drawings

Fig. 1 is a schematic structural diagram of a heat exchange system of an air conditioner according to an embodiment of the present invention.

Fig. 2 is a structural schematic diagram of a heat exchange system of an air conditioner according to another embodiment of the present invention.

Fig. 3 is an exploded view of the radiator of the heat exchange system of the air conditioner according to the embodiment of the present utility model.

Fig. 4 is a structural schematic diagram of an outdoor heat exchanger of the heat exchange system of an air conditioner according to an embodiment of the present utility model.

Reference signs: heat exchange system 1 of air conditioner, compressor 10, inlet 11 of compressor 10, outlet 12 of compressor 10, indoor heat exchanger 20, inlet 21 of indoor heat exchanger 20, indoor heat exchanger 20 Outlet 22 of outdoor heat exchanger 30, refrigerant outlet 31, refrigerant return port 32, inlet 33 of outdoor heat exchanger 30, outlet 34 of outdoor heat exchanger 30, radiator 40, heat dissipation main substrate 100, sub-radiator 200 , heat dissipation sub-base plate 210 , heat dissipation pipe 220 , refrigerant inlet 221 , refrigerant outlet 222 , throttling element 300 , four-way valve 400 , inlet 410 , first flow port 420 , second flow port 430 , and return port 440 .

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

A heat exchange system 1 of an air conditioner according to an embodiment of the present utility model is described below with reference to FIGS. 1-4 . As shown in FIGS. 1-4 , the heat exchange system 1 of an air conditioner according to an embodiment of the present invention includes a compressor 10 , an indoor heat exchanger 20 , an outdoor heat exchanger 30 and a radiator 40 .

The compressor 10 communicates with the outdoor heat exchanger 30 and the indoor heat exchanger 20 respectively to form a refrigerant conduction loop, and a throttling element 300 is connected between the outdoor heat exchanger 30 and the indoor heat exchanger 20, and the radiator 40 is tightly closed. The electronic control components attached to the compressor 10; wherein, the outdoor heat exchanger 30 is respectively provided with a refrigerant outlet 31 and a refrigerant return port 32, and the radiator 40 is connected between the refrigerant outlet 31 and the refrigerant return port 32, so as to The refrigerant in the outdoor heat exchanger 30 is made to flow through the radiator 40 and then return to the outdoor heat exchanger 30 .

According to the heat exchange system 1 of the air conditioner of the embodiment of the present invention, by setting the radiator 40, and the outdoor heat exchanger 30 is provided with a refrigerant outlet 31 and a refrigerant return port 32, so that the radiator 40 can be connected to the refrigerant outlet. Outlet 31 and refrigerant return port 32, so that the refrigerant in the outdoor heat exchanger 30 can be introduced into the radiator 40, so that the radiator 40 uses the internal refrigerant to dissipate heat from the electronic control components, and exchange with the electronic control components The heated refrigerant flows back into the outdoor heat exchanger 30 again. Compared with the way of heat dissipation through air convection, the heat exchange system 1 of the air conditioner has a better heat dissipation effect on the electronic control components, which can reduce the heat generation in high temperature environments. Reducing the operating frequency of the compressor 10 reduces the heating of the electronic control components, ensuring the cooling effect of the air conditioner in a high temperature environment, and further ensuring the comfort of the air conditioner. Therefore, the heat exchange system 1 of the air conditioner according to the embodiment of the utility model has the advantages of good heat dissipation effect, high-frequency operation in high temperature environment, reliable cooling effect, and improved comfort of the air conditioner.

Specifically, the electronic control element of the compressor 10 may be a frequency conversion module, and the throttling element 300 may be a capillary tube or an electronic expansion valve.

Fig. 3 shows a heat exchange system 1 of an air conditioner according to a specific embodiment of the present invention. The heat sink 40 may include a heat dissipation main substrate 100 and a sub heat sink 200 . The heat dissipation main substrate 100 can be closely attached to the electronic control components of the compressor 10 . The sub-radiator 200 may be disposed on the heat dissipation main substrate 100 , and the sub-radiator 200 may be formed with a refrigerant inlet 221 communicating with the refrigerant outlet 31 and a refrigerant outlet 222 communicating with the refrigerant return port 32 . This not only facilitates the installation of the radiator 40, but also has a sufficient heat exchange area between the radiator 40 and the electronic control components, ensuring the heat dissipation effect of the radiator 40 on the electronic control components.

Specifically, as shown in FIG. 3 , the sub-heat sink 200 may include a heat dissipation sub-base plate 210 and a heat dissipation pipe 220 . The heat dissipation sub-substrate 210 may be disposed on the heat dissipation main substrate 100 . The heat dissipation pipe 220 may be disposed on the heat dissipation sub-base plate 210 , and the refrigerant inlet 221 and the refrigerant outlet 222 may be formed on the heat dissipation pipe 220 . The refrigerant in the outdoor heat exchanger 30 flows into the heat dissipation pipe 220 , and exchanges heat with the electric control element through the heat dissipation sub-base plate 210 and the heat dissipation main base plate 100 . Thus, the production and manufacture of the radiator 40 can be facilitated while ensuring the heat dissipation effect of the radiator 40 on the electronic control components.

In order to further improve the heat dissipation effect of the radiator 40 on the electronic control components, the heat dissipation main substrate 100 can be in plane contact with the heat dissipation sub-substrate 210, and the heat exchange area can be increased by increasing the contact area between the heat dissipation main substrate 100 and the heat dissipation sub-substrate 210 . A heat dissipation paste may be further coated between the heat dissipation main substrate 100 and the heat dissipation sub-substrate 210 .

Specifically, the heat dissipation sub-substrate 210 may be provided with a groove, and the heat dissipation pipe 220 may be interference fit in the groove. This can not only improve the stability of the heat dissipation pipe 220 on the heat dissipation sub-base 210, but also make the heat dissipation pipe 220 closely contact with the heat dissipation sub-base 210, so as to ensure the reliability and efficiency of heat transfer.

Wherein, both the heat dissipation main substrate 100 and the heat dissipation sub-substrate 210 can be metal plates, and the heat dissipation pipes 220 can be copper pipes or aluminum pipes. In this way, the radiator 40 can not only have good mechanical strength, but also can make the radiator 40 have good thermal conductivity.

Fig. 4 shows a heat exchange system 1 of an air conditioner according to a specific example of the present invention. As shown in Figure 4, the outdoor heat exchanger 30 can have a plurality of long U-tubes, the inlet 33 of the outdoor heat exchanger 30 and the outlet 34 of the outdoor heat exchanger 30 can be respectively formed on two of the long U-tubes, and the refrigerant The outlet port 31 and the refrigerant return port 32 may be respectively formed on the other two long U-tubes. Preferably, the refrigerant outlet 31 and the refrigerant return port 32 may be respectively formed on two adjacent long U-tubes. Thus, the formation of the refrigerant outlet 31 and the refrigerant return port 32 can be facilitated, so that the refrigerant in the outdoor heat exchanger 30 can be introduced into the radiator 40 .

Wherein, the relative positions of the refrigerant outlet 31 , the refrigerant return port 32 and the inlet 33 of the outdoor heat exchanger 30 and the outlet 34 of the outdoor heat exchanger 30 may be determined according to actual conditions and test structures. The closer the long U-pipe connected to the radiator 40 is to the outlet 34 of the outdoor heat exchanger 30, the better the heat dissipation for the electronic control components is. The closer the long U-tube connected to the radiator 40 is to the inlet 33 of the outdoor heat exchanger 30, the smaller the loss of energy efficiency to the air conditioner.

For example, in order to ensure the heat dissipation effect of the radiator 40 on the electronic control components, the refrigerant return port 32 can be formed on the first long U tube counted from the outlet 34 of the outdoor heat exchanger 30, and the refrigerant outlet 31 can be It is formed on the second long U-tube from the outlet 34 of the outdoor heat exchanger 30 . That is, the refrigerant return port 32 and the refrigerant outlet port 31 may be disposed adjacent to the outlet 34 of the outdoor heat exchanger 30 .

The compressor 10, the indoor heat exchanger 20 and the outdoor heat exchanger 30 can be connected in different ways. For example, the heat exchange system 1 of the air conditioner may be a cooling-only frequency conversion heat exchange system. As shown in Figure 2, the outlet 12 of the compressor 10 can communicate with the inlet 33 of the outdoor heat exchanger 30, the outlet 34 of the outdoor heat exchanger 30 can communicate with the inlet 21 of the indoor heat exchanger 20, and the outlet 34 of the outdoor heat exchanger 20 can communicate with the inlet 21 of the indoor heat exchanger 20. The outlet 22 may communicate with the inlet 11 of the compressor 10 .

When the air conditioner is in cooling operation, the compressor 10 is running, the refrigerant flows from the compressor 10 into the outdoor heat exchanger 30, condenses and dissipates heat in the outdoor heat exchanger 30, and the refrigerant flows through the second outlet 34 of the outdoor heat exchanger 30 After rooting a long U tube, it flows out from the refrigerant outlet 31, and flows into the radiator 40 through the refrigerant inlet 221 of the radiator 40 to absorb heat, and then flows out of the radiator 40 from the refrigerant outlet 222 of the radiator 40, and flows from the refrigerant return port 32 Flow back to the outdoor heat exchanger 30 , continue to condense and dissipate heat in the outdoor heat exchanger 30 , then flow out from the outlet 34 of the outdoor heat exchanger 30 , and enter the throttling element 300 for throttling. After that, it enters the indoor heat exchanger 20 to absorb heat and lower the temperature of the room in use, and finally returns to the compressor 10 to form a cycle.

The heat exchange system 1 of the air conditioner may also be a cooling and heating type frequency conversion heat exchange system. As shown in Figure 1, the compressor 10 can be connected to the indoor heat exchanger 20 and the outdoor heat exchanger 30 respectively through a four-way valve 400, wherein the arrow in Figure 1 indicates the flow direction of the refrigerant during the refrigeration cycle, and the triangle indicates The flow direction of the refrigerant during the heating cycle.

Specifically, the four-way valve 400 may have an inlet 410, a first flow port 420, a second flow port 430 and a return port 440, the outlet 12 of the compressor 10 may communicate with the inlet 410 of the four-way valve 400, and the four-way valve 400 The first flow port 420 can communicate with the indoor heat exchanger 20 , the second flow port 430 of the four-way valve 400 can communicate with the outdoor heat exchanger 30 , and the return port 440 can communicate with the inlet 11 of the compressor 10 .

When the heat exchange system 1 of the air conditioner is in cooling operation, the compressor 10 is running, the refrigerant flows into the outdoor heat exchanger 30 through the second flow port 430 of the four-way valve 400 to condense and dissipate heat, and the refrigerant flows from the refrigerant outlet 31 to dissipate heat The radiator 40 absorbs heat, and then flows out of the radiator 40 from the refrigerant outlet 222 of the radiator 40, and flows into the outdoor heat exchanger 30 from the refrigerant return port 32, continues to condense and dissipate heat in the outdoor heat exchanger 30, and then enters the throttling element 300 is throttling and then enters the indoor heat exchanger 20 to absorb heat and cool down the room in use, and finally returns to the compressor 10 through the return port 440 of the four-way valve 400 to form a cycle.

When the heat exchange system 1 of the air conditioner is in heating operation, the compressor 10 is running, and the refrigerant flows into the indoor heat exchanger 20 through the first flow port 420 of the four-way valve 400 to condense and dissipate heat, and then flows through the throttling element 300 to throttle , and then flow into the outdoor heat exchanger 30 to absorb heat. The refrigerant in the outdoor heat exchanger 30 flows into the radiator 40 through the refrigerant return port 32 and the refrigerant outlet 222 in order to cool down the electronic control components, and then sequentially passes through the refrigerant The inlet 221 and the refrigerant outlet 31 flow back to the outdoor heat exchanger 30 for heat absorption, and finally return to the compressor 10 through the return port 440 of the four-way valve 400 to form a cycle. That is to say, the flow direction of the refrigerant in the heat exchange system 1 of the air conditioner during heating is opposite to that during cooling.

An air conditioner according to an embodiment of the present invention will be described below, and the air conditioner includes the heat exchange system 1 of the air conditioner according to the above embodiments of the present invention.

The air conditioner according to the embodiment of the present invention, by using the heat exchange system 1 of the air conditioner according to the above embodiment of the present invention, has the advantages of reliable cooling performance in outdoor high temperature environment, small loss of power and energy efficiency, and high comfort.

Other configurations and operations of the air conditioner according to the embodiment of the present utility model are known to those skilled in the art and will not be described in detail here.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", Orientation indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation , so it cannot be interpreted as a limitation of the present utility model.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "below" a second feature may include direct contact between the first and second features, and may also include the first and second features being in direct contact with each other. The features are not in direct contact but through another feature between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed 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. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations of the present invention, and those skilled in the art are within the scope of the present invention. Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (10)

1. the heat-exchange system of an air-conditioner, it is characterized in that, comprise compressor, outdoor heat exchanger, Indoor Thermal parallel operation and radiator, described compressor is connected to form refrigerant conducting loop with described outdoor heat exchanger and described indoor heat exchanger respectively, between described outdoor heat exchanger and described indoor heat exchanger, be connected with restricting element, described radiator is close to the electric control element of described compressor;

Wherein, on described outdoor heat exchanger, be respectively arranged with refrigerant outlet and refrigerant refluxing opening, described radiator is connected between described refrigerant outlet and described refrigerant refluxing opening, gets back to described outdoor heat exchanger so that the refrigerant in described outdoor heat exchanger is flowed through after described radiator.

2. the heat-exchange system of air-conditioner according to claim 1, is characterized in that, described radiator comprises:

Heat radiation main substrate, described heat radiation main substrate is close on the electric control element of described compressor;

Sub-radiator, described sub-radiator is located on described heat radiation main substrate, and described sub-radiator is formed with the refrigerant import being communicated with described refrigerant outlet and the refrigerant exit being communicated with described refrigerant refluxing opening.

3. the heat-exchange system of air-conditioner according to claim 2, is characterized in that, described sub-radiator comprises:

Heat radiation auxiliary substrate, described heat radiation auxiliary substrate is located on described heat radiation main substrate;

Radiating tube, described radiating tube is located on described heat radiation auxiliary substrate, and described refrigerant import and described refrigerant exit are formed on described radiating tube.

4. the heat-exchange system of air-conditioner according to claim 3, is characterized in that, described heat radiation auxiliary substrate is provided with groove, and described radiating tube is interference fitted in described groove.

5. the heat-exchange system of air-conditioner according to claim 3, is characterized in that, described heat radiation main substrate and described heat radiation auxiliary substrate are metallic plate, and described radiating tube is copper pipe or aluminum pipe.

6. the heat-exchange system of air-conditioner according to claim 1, it is characterized in that, described outdoor heat exchanger has multiple long U pipes, the import of described outdoor heat exchanger and the outlet of described outdoor heat exchanger are respectively formed on two described long U pipes, and described refrigerant outlet and described refrigerant refluxing opening are respectively formed at described in two other on long U pipe.

7. the heat-exchange system of air-conditioner according to claim 6, it is characterized in that, described refrigerant refluxing opening is formed on from long U pipe described in the outlet of described outdoor heat exchanger is counted first, and described refrigerant outlet is formed on from several second the described long U pipe of outlet of described outdoor heat exchanger.

8. according to the heat-exchange system of the air-conditioner described in any one in claim 1-7, it is characterized in that, the outlet of described compressor is communicated with the import of described outdoor heat exchanger, the outlet of described outdoor heat exchanger is communicated with the import of described indoor heat exchanger, and the outlet of described indoor heat exchanger is communicated with the import of described compressor.

9. according to the heat-exchange system of the air-conditioner described in any one in claim 1-7, it is characterized in that, also comprise cross valve, described cross valve has import, first-class port, second port and refluxing opening, the outlet of described compressor is communicated with the import of described cross valve, the first-class port of described cross valve is communicated with described indoor heat exchanger, and the second port of described cross valve is communicated with described outdoor heat exchanger, and described refluxing opening is communicated with the import of described compressor.

10. an air-conditioner, is characterized in that, comprises according to the heat-exchange system of the air-conditioner described in any one in claim 1-9.

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