Air treatment device and air conditioner

Abstract

The application provides an air treatment device and an air conditioner. The air treatment device comprises a heat exchange system and a control system. The heat exchange system comprises a compressor, a first heat exchanger, a heat exchange device, a first throttling component, a second throttling component, a second heat exchanger and a gas-liquid separator. The control system comprises a heating device. The heat exchange device is arranged on the heating device and has a first refrigerant flow path and a second refrigerant flow path. The second throttling component is arranged to be capable of throttling and shutting off under control. The compressor, the first heat exchanger, the first refrigerant flow path, the first throttling component, the second heat exchanger and the gas-liquid separator are connected in series to form a refrigerant circuit. The inlet of the second throttling component is connected to a passage between the first refrigerant flow path and the first throttling component, and the outlet is connected to the inlet of the second refrigerant flow path. The outlet of the second refrigerant flow path is communicated with the inlet of the gas-liquid separator. The air treatment device can solve the problems of high indoor heat exchanger flow rate, large pressure drop and low heat exchange efficiency during high-frequency heating operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrical appliances, in particular to an air treatment device and an air conditioner. BACKGROUND

[0002] The existing variable frequency air conditioner, when operating in high frequency heating mode, the refrigerant flow rate in the indoor heat exchanger is large, the pressure drop is large, and the heat exchange efficiency is low. SUMMARY

[0003] The main purpose of the present application is to provide an air treatment device, which can solve the problem of large refrigerant flow rate, large pressure drop and low heat exchange efficiency in the indoor heat exchanger when operating in high frequency heating mode.

[0004] The main purpose of the present application is to provide an air conditioner.

[0005] To achieve the above-mentioned purpose, the air treatment device provided by the embodiments of the present application comprises a heat exchange system and a control system, the heat exchange system comprises a compressor, a first heat exchanger, a heat exchange device, a first throttling component, a second throttling component, a second heat exchanger and a gas-liquid separator, the control system comprises a heating device, the heat exchange device is arranged on the heating device and has a first refrigerant flow path and a second refrigerant flow path, and the second throttling component is arranged to be capable of being controlled to throttle and shut off; the compressor, the first heat exchanger, the first refrigerant flow path, the first throttling component, the second heat exchanger and the gas-liquid separator are connected in series to form a refrigerant circuit, the inlet of the second throttling component is connected to a passage between the first refrigerant flow path and the first throttling component, and the outlet is connected to the inlet of the second refrigerant flow path, and the outlet of the second refrigerant flow path is in communication with the inlet of the gas-liquid separator.

[0006] In an exemplary embodiment, the air treatment device further comprises a four-way valve connected to the first heat exchanger, the second heat exchanger, the outlet of the compressor and the inlet of the gas-liquid separator; and a fourth throttling component connected in series between the first refrigerant flow path and the first heat exchanger, either the first throttling component or the fourth throttling component is open, and the other throttles.

[0007] In an exemplary embodiment, the compressor is an enthalpy injection compressor, and the outlet of the second refrigerant flow path is also in communication with an enthalpy injection port of the enthalpy injection compressor.

[0008] In an exemplary embodiment, the air treatment device further comprises a third throttling component arranged on a passage between the outlet of the second refrigerant flow path and the inlet of the gas-liquid separator.

[0009] In an exemplary embodiment, the air treatment device further comprises a third throttling component arranged on a passage between the outlet of the second refrigerant flow path and the inlet of the gas-liquid separator.

[0010] In an exemplary embodiment, the second refrigerant flow path is located between the first refrigerant flow path and the heat generating device.

[0011] In an exemplary embodiment, the second refrigerant flow path includes: a first collecting flow channel; a second collecting flow channel; and a plurality of branch flow channels located between the first collecting flow channel and the second collecting flow channel and communicating the first collecting flow channel and the second collecting flow channel.

[0012] In an exemplary embodiment, the first refrigerant flow path includes: a first collecting flow channel; a second collecting flow channel; and a plurality of branch flow channels located between the first collecting flow channel and the second collecting flow channel and communicating the first collecting flow channel and the second collecting flow channel.

[0013] In an exemplary embodiment, the heat generating device includes at least one of a frequency converter and a processor.

[0014] In an exemplary embodiment, the first heat exchanger is an indoor heat exchanger, and the second heat exchanger is an outdoor heat exchanger.

[0015] In an exemplary embodiment, the first throttling component, the second throttling component, the third throttling component, and the fourth throttling component are all electronic expansion valves.

[0016] The air treatment device according to any one of the above embodiments.

[0017] In the technical scheme, the outlet of the compressor is communicated with the first heat exchanger for heating operation: the second throttling component throttles, the refrigerant discharged from the outlet of the compressor becomes supercooled after passing through the first heat exchanger, and is then divided into two parts after passing through the first refrigerant flow path: one part enters the second heat exchanger for heat absorption after throttling by the first throttling component, and then returns to the compressor through the gas-liquid separator; the other part becomes low-temperature two-phase refrigerant after throttling by the second throttling component, and absorbs heat of the heat generating device and the refrigerant in the first refrigerant flow path during passing through the second refrigerant flow path, carries away the heat of the heat generating device, and increases the supercooling degree of the refrigerant passing through the first refrigerant flow path, and finally passes through the gas-liquid separator in a superheated state to return to the compressor, so that the enthalpy difference of the refrigerant at the inlet and the outlet of the second heat exchanger is larger, this scheme not only can apply the heat of the heat generating device to the air treatment device, but also can reduce the pressure drop of the second heat exchanger, increase the suction saturation temperature, and improve the evaporation pressure of the compressor and the heating capacity of the refrigerant circuit; in addition, the refrigerant entering the first throttling component is supercooled refrigerant, so that the noise generated by the first throttling component is smaller. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only need to be some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor.

[0019] Figure 1 Structure schematic view of an example of the air treatment device according to Embodiment 1 of the present application.

[0020] Figure 2 Structure schematic view of another example of the air treatment device according to Embodiment 1 of the present application.

[0021] Figure 3 Structure schematic view of the air treatment device according to Embodiment 2 of the present application.

[0022] Figure 4 Structure schematic view of the air treatment device according to Embodiment 3 of the present application.

[0023] Figure 5 Structure schematic view of the heat exchange device in some embodiments of the present application.

[0024] In the drawings, Figures 1 to 5 The relationship between the reference signs and the component names in the drawings is as follows:

[0025] 100 compressor, 110 injection port, 200 first heat exchanger, 300 heat exchange device, 310 first refrigerant flow path, 320 second refrigerant flow path, 400 first throttling component, 500 second throttling component, 600 second heat exchanger, 700 gas-liquid separator, 800 heat generating device, 900 third throttling component, 1000 four-way valve, 1100 fourth throttling component, 1200 bypass branch.

[0026] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] It should be noted that all the direction indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the direction indications will also change accordingly.

[0029] In addition, the descriptions such as "first", "second" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0030] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; "connection" can be direct connection, or indirect connection through intermediate medium, can be internal communication of two elements or interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0032] Embodiment one

[0033] Figure 1 Structure schematic diagram of an example of the air treatment device according to embodiment one of the present application. Figure 2 Structure schematic diagram of another example of the air treatment device according to embodiment one of the present application. Figure 5 Structure schematic diagram of the heat exchange device in some embodiments of the present application.

[0034] The air treatment device according to the embodiments of the present application, such as Figure 1 and Figure 2As shown, the air handling device comprises a heat exchange system and a control system. The heat exchange system comprises a compressor 100, a first heat exchanger 200, a heat exchange device 300, a first throttling component 400, a second throttling component 500, a second heat exchanger 600, and a gas-liquid separator 700. The control system comprises a heat generating device 800. The heat exchange device 300 is arranged on the heat generating device 800 and has a first refrigerant flow path 310 and a second refrigerant flow path 320. The second throttling component 500 is arranged to be controllably throttled and shut off. The compressor 100, the first heat exchanger 200, the first refrigerant flow path 310, the first throttling component 400, the second heat exchanger 600, and the gas-liquid separator 700 are connected in series to form a refrigerant circuit. The second throttling component 500 and the second refrigerant flow path 320 are connected in series to form a bypass branch 1200. The inlet of the second throttling component 500 is connected to (i.e., communicates with) a passage between the first refrigerant flow path 310 and the first throttling component 400, and the outlet is connected to (i.e., communicates with) the inlet of the second refrigerant flow path 320. The outlet of the second refrigerant flow path 320 communicates with the inlet of the gas-liquid separator 700.

[0035] In an embodiment, the first heat exchanger 200 is arranged as an indoor heat exchanger, and the second heat exchanger 600 is arranged as an outdoor heat exchanger. The air handling device can be a variable frequency single warm air conditioner.

[0036] The outlet of the compressor 100 communicates with the first heat exchanger 200 for heating operation. The second throttling component 500 is throttled. The refrigerant discharged from the outlet of the compressor 100 becomes a supercooled state after passing through the first heat exchanger 200, and is then divided into two parts: one part passes through the first throttling component 400 to be throttled and then enters the second heat exchanger 600 to be heated, and then passes through the gas-liquid separator 700 to return to the compressor 100; the other part passes through the second throttling component 500 to be throttled and becomes a low-temperature two-phase state refrigerant, which heats the heat generating device 800 and the refrigerant in the first refrigerant flow path 310 during the process of passing through the second refrigerant flow path 320, carries away the heat of the heat generating device 800, and increases the supercooling degree of the refrigerant passing through the first refrigerant flow path 310, and finally passes through the gas-liquid separator 700 in a superheated state to return to the compressor 100. In this way, the enthalpy difference of the refrigerant at the inlet and outlet of the second heat exchanger 600 is larger. This scheme not only applies the heat of the heat generating device 800 to the air handling device, but also reduces the pressure drop of the second heat exchanger 600, increases the suction saturation temperature, and improves the evaporating pressure of the compressor 100, thereby improving the heating capacity of the refrigerant circuit. In addition, the refrigerant entering the first throttling component 400 is supercooled refrigerant, so the noise generated by the first throttling component 400 is smaller. The air handling device can be a variable frequency single warm air conditioner.

[0037] The second throttling component 500 can be arranged to be throttled when the air handling device is operated at a medium-high frequency for heating, and arranged to be shut off when the air handling device is operated at a low frequency for heating.

[0038] In one embodiment, the heating device 800 includes at least one of a frequency converter and a processor. When heating, the heat from at least one of the frequency converter and the processor is used on the air handling unit, thereby improving the heating effect of the air handling unit and reducing the energy consumption of the air handling unit.

[0039] In one embodiment, such as Figure 2 As shown, the air handling unit also includes a third throttling component 900, which is located in the passage between the outlet of the second refrigerant flow path 320 and the inlet of the gas-liquid separator 700. During medium-frequency low-temperature heating, this design can better reduce the pressure drop of the second heat exchanger 600, better increase the suction saturation temperature, better increase the evaporation pressure of the compressor 100, and better improve the heating capacity of the refrigerant circuit.

[0040] In one embodiment, such as Figure 5 As shown, the second refrigerant flow path 320 is located between the first refrigerant flow path 310 and the heating element 800, which makes it easier for another part of the refrigerant to absorb heat from the heating element 800 and the refrigerant in the first refrigerant flow path 310 during the process of passing through the second refrigerant flow path 320, thereby removing the heat from the heating element 800 and increasing the subcooling of the refrigerant passing through the first refrigerant flow path 310.

[0041] Alternatively, the first refrigerant flow path 310 can be located between the second refrigerant flow path 320 and the heating element 800, which can also achieve the purpose of this application. Its purpose has not departed from the design concept of this invention, and will not be elaborated here. It should also fall within the protection scope of this application.

[0042] In one embodiment, the first throttling component 400, the second throttling component 500, and the third throttling component 900 are all configured as electronic expansion valves, which are easy to procure and have stable performance.

[0043] The second refrigerant flow path 320 may include: a first converging flow channel; a second converging flow channel; and a plurality of branch flow channels located between and connected to the first and second converging flow channels. In one embodiment, the second refrigerant flow path 320 is constructed by two flow channel plates being joined together, with the inlet of the second refrigerant flow path 320 located in the first converging flow channel and the outlet of the second refrigerant flow path 320 located in the second converging flow channel.

[0044] The first refrigerant flow path 310 may include: a first converging flow channel; a second converging flow channel; and a plurality of branch flow channels located between and connected to the first and second converging flow channels. In one embodiment, the first refrigerant flow path 310 is constructed by two flow channel plates being joined together, with the inlet of the first refrigerant flow path 310 located in the first converging flow channel and the outlet of the first refrigerant flow path 310 located in the second converging flow channel.

[0045] In one embodiment, the heat exchange device 300 includes three flow channel plates (or four flow channel plates). The first refrigerant flow path 310 and the first refrigerant flow path 310 are constructed by the three flow channel plates (or four flow channel plates) that are sequentially aligned. Both can achieve the purpose of this application. Their purpose has not departed from the design concept of this invention, and will not be described in detail here. They should all fall within the protection scope of this application.

[0046] In one embodiment, the compressor 100 is an enthalpy-injected compressor, and the outlet of the second refrigerant flow path 320 is also connected to the enthalpy injection port of the enthalpy-injected compressor (not shown in this embodiment).

[0047] Example 2

[0048] Figure 3 This is a schematic diagram of the air treatment device described in Embodiment 2 of the present invention.

[0049] The difference between this embodiment and Embodiment 1 is that: Figure 3 As shown, the air handling unit also includes: a four-way valve 1000, the four ports of which are connected one-to-one to the outlet of the first heat exchanger 200, the second heat exchanger 600, the compressor 100, and the gas-liquid separator 700; and a fourth throttling component 1100, which is connected in series between the first refrigerant flow path 310 and the first heat exchanger 200, wherein either the first throttling component 400 or the fourth throttling component 1100 is opened in a controlled manner and the other is throttled in a controlled manner.

[0050] In one embodiment, the first heat exchanger 200 is configured as an indoor heat exchanger, and the second heat exchanger 600 is configured as an outdoor heat exchanger. The air handling unit can be a variable frequency single-heating air conditioner.

[0051] In the first state, the four-way valve 1000 is in the first state, the outlet of the compressor 100 is connected to the first heat exchanger 200, the first throttling component 400 throttles, and the fourth throttling component 1100 is open (equivalent to a passage), and heating operation is performed. The second throttling component 500 throttles, and the refrigerant discharged from the outlet of the compressor 100 becomes subcooled after passing through the first heat exchanger 200 and the fourth throttling component 1100. After passing through the first refrigerant flow path 310, it is divided into two parts: one part passes through the first throttling component 400 and enters the second heat exchanger 600 to absorb heat, then returns to the compressor 100 through the gas-liquid separator 700; the other part passes through the second throttling component 500 and becomes a low-temperature two-phase refrigerant, then passes through the second refrigerant flow path 310. During the process of 20, the heat is absorbed by the heating element 800 and the refrigerant in the first refrigerant flow path 310, which removes the heat from the heating element 800 and increases the subcooling of the refrigerant passing through the first refrigerant flow path 310. Finally, the refrigerant returns to the compressor 100 in a superheated state through the gas-liquid separator 700. This results in a larger enthalpy difference between the inlet and outlet of the second heat exchanger 600. This scheme can not only apply the heat from the heating element 800 to the air handling unit, but also reduce the pressure drop of the second heat exchanger 600, increase the suction saturation temperature, increase the evaporation pressure of the compressor 100, and improve the heating capacity of the refrigerant circuit. In addition, the refrigerant entering the first throttling component 400 is a subcooled refrigerant, which reduces the noise generated by the first throttling component 400.

[0052] It can be that when performing medium- and high-frequency heating, the second throttling component 500 is set to throttling; when performing low-frequency heating, the second throttling component 500 is set to shut off.

[0053] The four-way valve 1000 is in the second state, the outlet of the compressor 100 is connected to the second heat exchanger 600, the first throttling component 400 is open (equivalent to a passage), and the fourth throttling component 1100 throttles, performing refrigeration operation: the second throttling component 500 throttles, and the refrigerant discharged from the outlet of the compressor 100 is divided into two parts after passing through the second heat exchanger 600 and the first throttling component 400. One part passes through the first refrigerant flow path 310, and after being throttled by the fourth throttling component 1100, it enters the first heat exchanger 200 to absorb heat, and then returns to the compressor 100 after passing through the gas-liquid separator 700; the other part becomes a low-temperature two-phase refrigerant after being throttled by the second throttling component 500. The refrigerant absorbs heat from the heating element 800 and the refrigerant in the first refrigerant flow path 310 during its passage through the second refrigerant flow path 320. This removes heat from the heating element 800 and increases the subcooling of the refrigerant passing through the first refrigerant flow path 310. Finally, it returns to the compressor 100 through the gas-liquid separator 700. This results in a larger enthalpy difference between the inlet and outlet of the first heat exchanger 200. This design can reduce the pressure drop of the first heat exchanger 200 and increase the heat exchange capacity of the first heat exchanger 200, thus increasing the cooling capacity of the air handling unit. In addition, the refrigerant entering the fourth throttling component 1100 is a subcooled refrigerant, which reduces the noise generated by the fourth throttling component 1100.

[0054] It can be that when performing high-frequency cooling, the second throttling component 500 is set to throttling; when performing medium- and low-frequency cooling, the second throttling component 500 is set to shut off.

[0055] The air handling unit can be a variable frequency air conditioner.

[0056] In one embodiment, the fourth throttling component 1100 is configured as an electronic expansion valve, which is readily available and has stable performance.

[0057] Example 3

[0058] Figure 4 This is a schematic diagram of the air handling device described in Embodiment 3 of the present invention.

[0059] The difference between this embodiment and embodiment two is that: Figure 4 As shown, compressor 100 is an enthalpy-injected compressor, and the outlet of the second refrigerant flow path 320 is also connected to the enthalpy injection port 110 of the enthalpy-injected compressor.

[0060] The first heat exchanger 200 is configured as an indoor heat exchanger, and the second heat exchanger 600 is configured as an outdoor heat exchanger. This air handling unit can be a variable frequency single-heating air conditioner.

[0061] In the first state, the four-way valve 1000 is in the first state, the outlet of the compressor 100 is connected to the first heat exchanger 200, the first throttling component 400 throttles, and the fourth throttling component 1100 is open (equivalent to a passage), and heating operation is performed. The second throttling component 500 throttles, and the refrigerant discharged from the outlet of the compressor 100 becomes subcooled after passing through the first heat exchanger 200 and the fourth throttling component 1100. After passing through the first refrigerant flow path 310, it is divided into two parts: one part passes through the first throttling component 400 and enters the second heat exchanger 600 to absorb heat, then returns to the compressor 100 through the gas-liquid separator 700; the other part passes through the second throttling component 500 and becomes a low-temperature two-phase refrigerant, then passes through the second refrigerant flow path 310. During process 20, heat is absorbed from the heating element 800 and the refrigerant in the first refrigerant flow path 310, carrying away the heat from the heating element 800 and increasing the subcooling of the refrigerant passing through the first refrigerant flow path 310. Finally, the refrigerant returns to the compressor 100 in a superheated state through the gas-liquid separator 700. This results in a larger enthalpy difference between the inlet and outlet of the second heat exchanger 600. This scheme not only allows the heat from the heating element 800 to be applied to the air handling unit but also reduces the pressure drop of the second heat exchanger 600, increases the suction saturation temperature, increases the evaporation pressure of the compressor 100, and improves the heating capacity of the refrigerant circuit. Furthermore, the refrigerant entering the first throttling component 400 is subcooled, thus reducing the noise generated by the first throttling component 400. Alternatively, the second throttling component 500 can be set to throttling during medium-high frequency heating and set to shut off during low-frequency heating. When the second throttling component 500 throttles, the refrigerant flowing out of the second refrigerant flow path 320 is divided into two parts. One part flows back to the compressor 100 through the gas-liquid separator 700, and the other part flows into the compressor 100 from the injection enthalpy port 110. By increasing the intake volume of the injection enthalpy compressor, the compression capacity of the injection enthalpy compressor is increased, ultimately achieving the purpose of improving the cooling and heating capacity of the air handling unit.

[0062] The four-way valve 1000 is in the second state, the outlet of the compressor 100 is connected to the second heat exchanger 600, the first throttling component 400 is open (equivalent to a passage), and the fourth throttling component 1100 throttles, performing refrigeration operation: the second throttling component 500 throttles, and the refrigerant discharged from the outlet of the compressor 100 is divided into two parts after passing through the second heat exchanger 600 and the first throttling component 400. One part passes through the first refrigerant flow path 310, and after being throttled by the fourth throttling component 1100, it enters the first heat exchanger 200 to absorb heat, and then returns to the compressor 100 after passing through the gas-liquid separator 700; the other part becomes a low-temperature two-phase refrigerant after being throttled by the second throttling component 500. The refrigerant, during its passage through the second refrigerant flow path 320, absorbs heat from the heating element 800 and the refrigerant in the first refrigerant flow path 310, carrying away heat from the heating element 800 and increasing the subcooling of the refrigerant passing through the first refrigerant flow path 310. Finally, it returns to the compressor 100 via the gas-liquid separator 700. This results in a larger enthalpy difference between the inlet and outlet of the first heat exchanger 200, reducing the pressure drop and increasing the heat exchange capacity of the first heat exchanger 200, thus increasing the cooling capacity of the air handling unit. Furthermore, the refrigerant entering the fourth throttling component 1100 is subcooled, resulting in lower noise from the fourth throttling component 1100. Alternatively, the second throttling component 500 can be set to throttle during high-frequency cooling and to shut off during medium- and low-frequency cooling. When the second throttling component 500 throttles, the refrigerant flowing out of the second refrigerant flow path 320 is divided into two parts. One part flows back to the compressor 100 through the gas-liquid separator 700, and the other part flows into the compressor 100 from the injection enthalpy port 110. By increasing the intake volume of the injection enthalpy compressor, the compression capacity of the injection enthalpy compressor is increased, ultimately achieving the purpose of improving the cooling and heating capacity of the air handling unit.

[0063] In one embodiment, the air handling unit further includes a third throttling component 900 disposed in the passage between the outlet of the second refrigerant flow path 320 and the inlet of the gas-liquid separator 700. During medium-frequency low-temperature heating, this design can better reduce the pressure drop of the second heat exchanger 600, better increase the suction saturation temperature, better increase the evaporation pressure of the compressor 100, and better improve the heating capacity of the refrigerant circuit.

[0064] Example 4

[0065] The air conditioner proposed in this embodiment of the invention (not shown in the figure) includes the air handling device described in any of the above embodiments.

[0066] This air conditioner possesses all the advantages of the air handling device proposed in any of the above embodiments, which will not be repeated here.

[0067] In summary, in the technical solution of the present invention, the outlet of the compressor is connected to the first heat exchanger for heating operation: the second throttling component throttles. After the refrigerant discharged from the outlet of the compressor passes through the first heat exchanger, it becomes a subcooled state, and then is divided into two parts after passing through the first refrigerant flow path: one part passes through the first throttling component and then enters the second heat exchanger to absorb heat, and then returns to the compressor through the gas-liquid separator; the other part passes through the second throttling component and becomes a low-temperature two-phase refrigerant, and absorbs heat from the heating device and the refrigerant in the first refrigerant flow path during the process of passing through the second refrigerant flow path, takes away the heat of the heating device, and increases the subcooling degree of the refrigerant passing through the first refrigerant flow path, and finally returns to the compressor in a superheated state through the gas-liquid separator. In this way, the enthalpy difference of the refrigerant at the inlet and outlet of the second heat exchanger is larger. This solution can not only apply the heat of the heating device to the air handling device, but also reduce the pressure drop of the second heat exchanger, increase the suction saturation temperature, increase the evaporation pressure of the compressor, and improve the heating capacity of the refrigerant circuit; in addition, the refrigerant entering the first throttling component is a subcooled refrigerant, so the noise generated by the first throttling component is smaller.

[0068] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "edge", "opposite", "four corners", "perimeter", "the "mouth" structure", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0069] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", "assembly" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection", "fixed connection" can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0070] Although the disclosed embodiments of the present invention are as above, the above content is only the embodiments adopted for the convenience of understanding the present invention, and is not used to limit the present invention. Any person skilled in the art within the scope of the present invention can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed by the present invention. However, the patent protection scope of the present invention shall still be defined by the appended claims.

[0071] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An air handling device, characterized in that, The device includes a heat exchange system and a control system. The heat exchange system includes a compressor, a first heat exchanger, a heat exchange device, a first throttling component, a second throttling component, a third throttling component, a second heat exchanger, and a gas-liquid separator. The control system includes a heating element. The heat exchange device is disposed on the heating element and has a first refrigerant flow path and a second refrigerant flow path. The second throttling component is configured to controllably throttle and shut off. Specifically, during medium- and high-frequency heating, the second throttling component is configured to throttle, and during low-frequency heating, the second throttling component is configured to shut off. The compressor, the first heat exchanger, the first refrigerant flow path, the first throttling component, the second heat exchanger, and the gas-liquid separator are connected in series to form a refrigerant circuit. The inlet of the second throttling component is connected to the passage between the first refrigerant flow path and the first throttling component, and the outlet is connected to the inlet of the second refrigerant flow path. The outlet of the second refrigerant flow path is connected to the inlet of the gas-liquid separator. The third throttling component is located in the passage between the outlet of the second refrigerant flow path and the inlet of the gas-liquid separator.

2. The air handling apparatus according to claim 1, characterized in that, Also includes: A four-way valve is connected to the first heat exchanger, the second heat exchanger, the outlet of the compressor, and the inlet of the gas-liquid separator. and A fourth throttling component is connected in series between the first refrigerant flow path and the first heat exchanger. When either the first throttling component or the fourth throttling component is opened, the other is throttled.

3. The air handling apparatus according to claim 1 or 2, characterized in that, The compressor is an enthalpy-injected compressor, and the outlet of the second refrigerant flow path is also connected to the enthalpy-injected port of the enthalpy-injected compressor.

4. The air handling apparatus according to claim 1 or 2, characterized in that, The second refrigerant flow path is located between the first refrigerant flow path and the heating element.

5. The air handling apparatus according to claim 4, characterized in that, Both the first refrigerant flow path and the second refrigerant flow path include: First converging flow channel; Second converging channel; and Multiple branch channels are located between the first aggregation channel and the second aggregation channel, and are connected to the first aggregation channel and the second aggregation channel.

6. The air handling apparatus according to claim 1 or 2, characterized in that, The heat-generating device includes at least one of a frequency converter and a processor.

7. The air handling apparatus according to claim 1 or 2, characterized in that, The first heat exchanger is an indoor heat exchanger, and the second heat exchanger is an outdoor heat exchanger.

8. An air conditioner, characterized in that, Includes the air handling apparatus as described in any one of claims 1 to 7.

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