CN212339678U

CN212339678U - Air conditioner

Info

Publication number: CN212339678U
Application number: CN202021655407.5U
Authority: CN
Inventors: 李丽霞; 高阳; 李金伟; 江世恒
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-01-12
Anticipated expiration: 2030-08-10

Abstract

The utility model provides an air conditioner. The air conditioner comprises an indoor heat exchanger, an outdoor heat exchanger, a compressor, a first reversing component and a second reversing component, wherein the outdoor heat exchanger comprises a first heat exchange unit and a second heat exchange unit; the first connecting end of the second heat exchange unit is communicated with the second end of the first heat exchange unit through the second reversing part, the first end of the first heat exchange unit is communicated with the air suction end of the compressor through the second reversing part and the first reversing part, and when a refrigerant passes through the second heat exchange unit, heat exchange is carried out between the second heat exchange unit and the first heat exchange unit. The problem of among the prior art air conditioner can lead to indoor heat exchanger refrigerant flow to reduce when entering defrosting mode is solved.

Description

Air conditioner

Technical Field

The utility model relates to an air conditioner field particularly, relates to an air conditioner.

Background

When the air conditioner is operated for heating, if the outdoor environment is cold and the relative humidity is high, the surface of the heat exchanger of the outdoor unit of the air conditioner is easy to frost, which greatly reduces the heating effect of the air conditioner, and therefore, the air conditioner needs to remove the frost of the heat exchanger of the outdoor unit of the air conditioner through a defrosting control method.

However, the conventional defrosting mode generally switches the air conditioner to the cooling mode, which greatly affects the heating efficiency and the indoor comfort.

In addition, a defrosting scheme capable of continuously heating is also provided in the prior art, but when the defrosting scheme enters a defrosting mode, part of refrigerant is directly shunted to the corresponding unit of the outdoor heat exchanger from the exhaust port of the compressor so as to defrost the corresponding unit of the outdoor heat exchanger, so that the flow of the refrigerant of the indoor heat exchanger is reduced, the temperature of the inlet of the outdoor heat exchanger is overhigh, and the heating efficiency of the air conditioner is greatly reduced; moreover, the defrosting scheme depends on multiple pipelines, multiple valves and multiple throttling devices to defrost, so that the process and control are complex and the cost is high.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide an air conditioner to solve the problem that the air conditioner in the prior art can lead to the reduction of the refrigerant flow of the indoor heat exchanger when entering the defrosting mode.

In order to achieve the above object, the present invention provides an air conditioner, comprising an indoor heat exchanger, an outdoor heat exchanger and a compressor, wherein the outdoor heat exchanger comprises a first heat exchange unit and a second heat exchange unit; the air conditioner also comprises a first reversing component and a second reversing component, wherein the first reversing component is connected with the second reversing component; the first reversing component has a first working state, and when the first reversing component is in the first working state, the exhaust end of the compressor is communicated with the second heat exchange connecting end of the indoor heat exchanger through the first reversing component; the second reversing component has a third working state, and when the second reversing component is in the third working state, the first connecting end of the second heat exchange unit is communicated with the second end of the first heat exchange unit through the second reversing component; when the first reversing component is in a first working state and the second reversing component is in a third working state, the first end of the first heat exchange unit is communicated with the air suction end of the compressor through the second reversing component and the first reversing component; a first heat exchange connecting end of the indoor heat exchanger is communicated with a second end of the first heat exchange unit; the first heat exchange connecting end of the indoor heat exchanger is connected with the second connecting end of the second heat exchange unit in a break-make manner; when the air conditioner is in a defrosting mode, the first reversing component is in a first working state, the second reversing component is in a third working state, the first heat exchange connecting end of the indoor heat exchanger is communicated with the second connecting end of the second heat exchange unit, and when a refrigerant passes through the second heat exchange unit, heat exchange is carried out between the second heat exchange unit and the first heat exchange unit.

Furthermore, the first reversing component is provided with an eighth valve port, a ninth valve port, a tenth valve port and an eleventh valve port, and the eighth valve port is communicated with the second heat exchange connecting end of the indoor heat exchanger; the ninth valve port is communicated with the air suction end; the tenth valve port is connected with the second reversing component; the eleventh valve port is communicated with the exhaust end; when the first reversing component is in a first working state, the eighth valve port is communicated with the eleventh valve port, and the ninth valve port is communicated with the tenth valve port; the first reversing component also has a second working state, and when the first reversing component is in the second working state, the eighth valve port is communicated with the ninth valve port, and the tenth valve port is communicated with the eleventh valve port.

Furthermore, the second reversing component is provided with a first valve port, a second valve port, a third valve port and a fourth valve port, and the first valve port is communicated with the second connecting end of the second heat exchange unit or the second end of the first heat exchange unit; the second valve port is communicated with the first end of the first heat exchange unit; the third valve port is communicated with the tenth valve port; the fourth valve port is communicated with the first connecting end of the second heat exchange unit; when the second reversing component is in a third working state, the first valve port is communicated with the fourth valve port, and the second valve port is communicated with the third valve port; the second reversing component also has a fourth working state, when the second reversing component is in the fourth working state, the first valve port is communicated with the second valve port, and the third valve port is communicated with the fourth valve port.

Further, the air conditioner further includes: the third reversing component is provided with a fifth valve port, a sixth valve port and a seventh valve port, the fifth valve port is communicated with the first valve port, the sixth valve port is communicated with the second end of the first heat exchange unit, and the seventh valve port is communicated with the second connecting end of the second heat exchange unit; the third reversing component has a fifth working state and a sixth working state, and when the third reversing component is in the fifth working state, the fifth valve port is communicated with the sixth valve port; when the third reversing component is in a sixth working state, the fifth valve port is communicated with the seventh valve port.

Further, when the air conditioner is in a defrosting mode, the third reversing component is in a fifth working state; the air conditioner also has a cooling mode and a heating mode; when the air conditioner is in a refrigerating mode, the first reversing component is in a second working state, the second reversing component is in a fourth working state, the third reversing component is in a sixth working state, and the first heat exchange connecting end of the indoor heat exchanger is disconnected with the second connecting end of the second heat exchange unit; when the air conditioner is in a heating mode, the first reversing component is in a first working state, the second reversing component is in a fourth working state, the third reversing component is in a sixth working state, and the first heat exchange connecting end of the indoor heat exchanger is disconnected with the second connecting end of the second heat exchange unit.

Further, the air conditioner further includes: one end of the first connecting pipe is connected with the first heat exchange connecting end of the indoor heat exchanger, and the other end of the first connecting pipe is connected with the second end of the first heat exchange unit; one end of the second connecting pipe is connected with the first connecting pipe, and the other end of the second connecting pipe is connected with the second connecting end of the second heat exchange unit; one end of the third connecting pipe is connected with the first connecting pipe and is positioned between the second connecting pipe and the first heat exchange unit, and the other end of the third connecting pipe is connected with the second connecting pipe; the third reversing component is arranged on the third connecting pipe, and the sixth valve port and the seventh valve port are positioned on the third connecting pipe.

Further, the air conditioner further includes: and the control valve is arranged on the second connecting pipe and is positioned on one side of the third connecting pipe, which is far away from the second heat exchange unit.

Further, the air conditioner further includes: and the second flowmeter is arranged on the second connecting pipe and is positioned on one side of the third connecting pipe close to the second heat exchange unit.

Further, the air conditioner further includes: and the first flowmeter is arranged on the first connecting pipe and is positioned between the second connecting pipe and the indoor heat exchanger.

Further, the air conditioner further includes: and the throttling device is arranged on the first connecting pipe and is positioned between the third connecting pipe and the first heat exchange unit.

Further, the air conditioner further comprises an outdoor unit fan, the second heat exchange unit is arranged on one side of the first heat exchange unit far away from the outdoor unit fan: at least the outer surface of the first heat exchange unit is in contact with at least the outer surface of the second heat exchange unit.

Further, the heat exchange area of the first heat exchange unit is S₁The heat exchange area of the second heat exchange unit is S₂，S₂Ratio of S₁The ratio of (a) is in the range of 0.5 to 1.

Further, when the air conditioner is in the defrosting mode, the flow value of the first connecting pipe is Q_{General assembly}The flow value of the second connecting pipe is Q₂，Q₂Ratio Q_{General assembly}The ratio of (a) is in the range of 0.3 to 0.6.

The utility model discloses an air conditioner has the defrosting mode, and when the defrosting mode was operated, first switching-over part was in first operating condition, and second switching-over part was in third operating condition, and indoor heat exchanger's first heat transfer link is linked together with second heat transfer unit's second link. The refrigerant discharged from the exhaust end of the compressor enters the indoor heat exchanger for heat exchange and then is divided into two paths, wherein one path of refrigerant flows into the second heat exchange unit for heat exchange, then is mixed with the other path of refrigerant and then flows into the first heat exchange unit, and finally flows to the suction end of the compressor. The medium temperature refrigerant flowing out of the indoor heat exchanger enters the second heat exchange unit to exchange heat with the second heat exchange unit, the second heat exchange unit and the first heat exchange unit adjacent to the second heat exchange unit exchange heat, the temperature of the first heat exchange unit and the temperature of the second heat exchange unit are continuously increased, and frost on the first heat exchange unit and the second heat exchange unit is further ablated. The air conditioner performs defrosting in a heating mode, simultaneously ensures that indoor heat exchange quantity and comfortableness are not attenuated, improves heating efficiency in defrosting, and ensures indoor comfortableness; the system is simple and easy to operate and control.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of an air conditioner according to the present invention;

figure 2 shows a schematic view of an air conditioner according to the present invention in a cooling mode;

fig. 3 shows a schematic view of an air conditioner according to the present invention in a heating mode;

fig. 4 shows a schematic diagram of an air conditioner in a defrost mode according to the present invention;

fig. 5 is a schematic structural view illustrating a second direction changing part of an air conditioner according to the present invention;

fig. 6 is a schematic structural view illustrating a third direction changing part of an air conditioner according to the present invention;

fig. 7 is a schematic structural view illustrating a first direction changing part of an air conditioner according to the present invention.

Wherein the figures include the following reference numerals:

10. an indoor heat exchanger; 11. a first heat exchange connection end; 12. a second heat exchange connection end; 20. an outdoor heat exchanger; 21. a first heat exchange unit; 211. a first end; 212. a second end; 22. a second heat exchange unit; 221. a first connection end; 222. a second connection end; 30. a compressor; 40. a second commutation segment; 41. a first valve port; 42. a second valve port; 43. a third valve port; 44. a fourth valve port; 50. a third commutation segment; 51. a fifth valve port; 52. a sixth valve port; 53. a seventh valve port; 60. a first connecting pipe; 70. a second connecting pipe; 80. a first flow meter; 90. a second flow meter; 100. a control valve; 110. a fourth connecting pipe; 120. a third connecting pipe; 130. a throttling device; 140. a sixth connecting pipe; 160. a first reversing component; 161. an eighth valve port; 162. a ninth valve port; 163. a tenth valve port; 164. an eleventh valve port; 170. a first branch pipe; 180. a second branch pipe; 190. a third branch pipe; 200. a fourth branch pipe; 210. an eighth connecting pipe; 5. an outdoor unit fan.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The utility model provides an air conditioner, please refer to fig. 1 to 7, comprising an indoor heat exchanger 10, an outdoor heat exchanger 20 and a compressor 30, wherein the outdoor heat exchanger 20 comprises a first heat exchange unit 21 and a second heat exchange unit 22; the air conditioner also comprises a first reversing component 160 and a second reversing component 40, wherein the first reversing component 160 is connected with the second reversing component 40; the first reversing component 160 has a first working state, and when the first reversing component 160 is in the first working state, the discharge end of the compressor 30 is communicated with the second heat exchange connection end 12 of the indoor heat exchanger 10 through the first reversing component 160; the second reversing component 40 has a third working state, and when the second reversing component 40 is in the third working state, the first connection end 221 of the second heat exchange unit 22 is communicated with the second end 212 of the first heat exchange unit 21 through the second reversing component 40; when the first reversing component 160 is in the first working state and the second reversing component 40 is in the third working state, the first end 211 of the first heat exchange unit 21 is communicated with the suction end of the compressor 30 through the second reversing component 40 and the first reversing component 160; the first heat exchange connecting end 11 of the indoor heat exchanger 10 is communicated with the second end 212 of the first heat exchange unit 21; the first heat exchange connecting end 11 of the indoor heat exchanger 10 is connected with the second connecting end 222 of the second heat exchange unit 22 in a switching manner; when the air conditioner is in the defrosting mode, the first reversing component 160 is in the first working state, the second reversing component 40 is in the third working state, the first heat exchange connection end 11 of the indoor heat exchanger 10 is communicated with the second connection end 222 of the second heat exchange unit 22, and when a refrigerant passes through the second heat exchange unit 22, heat exchange is performed between the second heat exchange unit 22 and the first heat exchange unit 21.

The utility model discloses an air conditioner has the defrosting mode, and when the defrosting mode was operated, first switching-over part 160 was in first operating condition, and second switching-over part 40 was in third operating condition, and the first heat transfer link 11 of indoor heat exchanger 10 is linked together with the second link 222 of second heat transfer unit 22. The refrigerant discharged from the exhaust end of the compressor enters the indoor heat exchanger for heat exchange and then is divided into two paths, wherein one path flows into the second heat exchange unit 22 for heat exchange, then is mixed with the other path and then flows into the first heat exchange unit 21, and finally flows to the suction end of the compressor. The medium temperature refrigerant flowing out of the indoor heat exchanger enters the second heat exchange unit 22 to exchange heat with the second heat exchange unit 22, and the second heat exchange unit 22 exchanges heat with the first heat exchange unit 21 adjacent to the second heat exchange unit 22, so that the temperatures of the first heat exchange unit 21 and the second heat exchange unit 22 are continuously increased, and frost formed on the first heat exchange unit 21 and the second heat exchange unit 22 is further ablated. The air conditioner performs defrosting in a heating mode, simultaneously ensures that indoor heat exchange quantity and comfortableness are not attenuated, improves heating efficiency in defrosting, and ensures indoor comfortableness; the system is simple and easy to operate and control.

Specifically, the first heat exchange unit 21 has two connection ends, namely a first end 211 and a second end 212, which are oppositely arranged; the second heat exchange unit 22 has two connection ends, namely a first connection end 221 and a second connection end 222, which are oppositely arranged; the indoor heat exchanger 10 has two opposite connection ends, namely a first heat exchange connection end 11 and a second heat exchange connection end 12.

In the present embodiment, the first direction changing member 160 has an eighth valve port 161, a ninth valve port 162, a tenth valve port 163 and an eleventh valve port 164, and the eighth valve port 161 is communicated with the second heat exchanging connection end 12 of the indoor heat exchanger 10; the ninth valve port 162 communicates with the suction end; the tenth valve port 163 is connected to the second direction changing member 40; the eleventh valve port 164 communicates with the exhaust end; when the first direction changing component 160 is in the first working state, the eighth port 161 is communicated with the eleventh port 164, and the ninth port 162 is communicated with the tenth port 163; the first direction changing member 160 further has a second operation state, and when the first direction changing member 160 is in the second operation state, the eighth port 161 is communicated with the ninth port 162, and the tenth port 163 is communicated with the eleventh port 164.

Specifically, when the first reversing component 160 is energized, the first reversing component 160 is in the second operating state; when the first reversing component 160 is de-energized, the first reversing component 160 is in the first operating state.

In the present embodiment, the second direction changing component 40 has a first valve port 41, a second valve port 42, a third valve port 43 and a fourth valve port 44, the first valve port 41 is communicated with the second connection end 222 of the second heat exchanging unit 22 or the second end 212 of the first heat exchanging unit 21; the second valve port 42 is communicated with the first end 211 of the first heat exchange unit 21; the third port 43 communicates with a tenth port 163; the fourth valve port 44 is communicated with the first connection end 221 of the second heat exchange unit 22; when the second direction changing component 40 is in the third working state, the first valve port 41 is communicated with the fourth valve port 44, and the second valve port 42 is communicated with the third valve port 43; the second direction-changing component 40 also has a fourth operating state, and when the second direction-changing component 40 is in the fourth operating state, the first valve port 41 is communicated with the second valve port 42, and the third valve port 43 is communicated with the fourth valve port 44.

Specifically, when the second direction changing component 40 is powered on, the second direction changing component 40 is in a third working state; when the second direction changing member 40 is de-energized, the second direction changing member 40 is in the fourth operating state.

Specifically, the first direction changing member 160 and the second direction changing member 40 are all four-way solenoid valves.

In this embodiment, the air conditioner further includes: a third direction changing part 50, wherein the third direction changing part 50 has a fifth valve port 51, a sixth valve port 52 and a seventh valve port 53, the fifth valve port 51 is communicated with the first valve port 41, the sixth valve port 52 is communicated with the second end 212 of the first heat exchanging unit 21, and the seventh valve port 53 is communicated with the second connecting end 222 of the second heat exchanging unit 22; the third direction changing component 50 has a fifth working state and a sixth working state, and when the third direction changing component 50 is in the fifth working state, the fifth valve port 51 is communicated with the sixth valve port 52; when the third direction changing component 50 is in the sixth working state, the fifth port 51 communicates with the seventh port 53.

In the present embodiment, when the air conditioner is in the defrosting mode, the third reversing component 50 is in the fifth operating state; the air conditioner also has a cooling mode and a heating mode; when the air conditioner is in a cooling mode, the first reversing component 160 is in the second working state, the second reversing component 40 is in the fourth working state, the third reversing component 50 is in the sixth working state, and the first heat exchange connection end 11 of the indoor heat exchanger 10 is disconnected from the second connection end 222 of the second heat exchange unit 22; when the air conditioner is in the heating mode, the first reversing component 160 is in the first working state, the second reversing component 40 is in the fourth working state, the third reversing component 50 is in the sixth working state, and the first heat exchange connection end 11 of the indoor heat exchanger 10 is disconnected from the second connection end 222 of the second heat exchange unit 22.

Specifically, the third direction changing component 50 is a three-way electromagnetic valve, and when the third direction changing component 50 is energized, the third direction changing component 50 is in a sixth working state; when the third reversing element 50 is de-energized, the third reversing element 50 is in a fifth operating state.

In this embodiment, the air conditioner further includes: a first connection pipe 60, one end of the first connection pipe 60 being connected to the first heat exchange connection end 11 of the indoor heat exchanger 10, and the other end of the first connection pipe 60 being connected to the second end 212 of the first heat exchange unit 21; a second connection pipe 70, one end of the second connection pipe 70 being connected to the first connection pipe 60, and the other end of the second connection pipe 70 being connected to a second connection end 222 of the second heat exchange unit 22; one end of the third connection pipe 120 is connected to the first connection pipe 60 and is located between the second connection pipe 70 and the first heat exchange unit 21, and the other end of the third connection pipe 120 is connected to the second connection pipe 70; the third direction changing member 50 is disposed on the third connection pipe 120, and the sixth port 52 and the seventh port 53 are located on the third connection pipe 120.

In this embodiment, the air conditioner further includes: and a control valve 100 disposed on the second connection pipe 70 at a side of the third connection pipe 120 away from the second heat exchange unit 22.

Specifically, the second direction changing component 40 is powered on, regulates flow as needed, and is powered off.

In this embodiment, the air conditioner further includes: and a second flow meter 90 disposed on the second connection pipe 70 at a side of the third connection pipe 120 adjacent to the second heat exchange unit 22. Such an arrangement may measure the flow rate of the second connection pipe 70.

In this embodiment, the air conditioner further includes: and a first flow meter 80 disposed on the first connection pipe 60 between the second connection pipe 70 and the indoor heat exchanger 10. Such an arrangement may measure the flow rate of the first connecting tube 60.

In this embodiment, the air conditioner further includes: and a throttling means 130 provided on the first connection pipe 60 between the third connection pipe 120 and the first heat exchange unit 21. The arrangement is used for throttling and depressurizing the refrigerant entering the first heat exchange unit.

Alternatively, the throttling means may be an electronic expansion valve or a capillary tube.

In this embodiment, the air conditioner further includes an outdoor fan 5, and the second heat exchange unit 22 is disposed on a side of the first heat exchange unit 21 away from the outdoor fan 5: at least the outer surface of the first heat exchange unit 21 and at least the outer surface of the second heat exchange unit 22 are in contact. The first heat exchange unit 21 is close to the outdoor fan 5 on the outside, and the second heat exchange unit 22 is close to the indoor side.

Specifically, the air conditioner comprises an air conditioner outdoor unit, wherein the air conditioner outdoor unit comprises an outdoor unit shell and an outdoor unit fan arranged on the outdoor unit shell; the second heat exchange unit 22 and the first heat exchange unit 21 are both disposed in the outdoor unit casing.

Specifically, first heat exchange unit 21 and second heat exchange unit 22 are maintained at a suitable spacing or in contact.

In this embodiment, the air conditioner further includes a temperature sensing device disposed on the first heat exchange unit 21 to detect the temperature of the first heat exchange unit 21.

Optionally, the temperature sensing device is a bulb.

In this embodiment, the air conditioner further comprises a control device, wherein the control device is in control connection with the temperature sensing device, the control valve, the first reversing component, the second reversing component and the third reversing component; the control device is used for controlling the opening degree of the control valve and also used for controlling the electrification or the outage of the first reversing component, the second reversing component and the third reversing component.

Specifically, when the temperature sensing device detects that the temperature of the first heat exchange unit 21 is less than or equal to a first preset temperature, a signal is sent to the control device, and the control device controls the air conditioner to enter a defrosting mode; when the temperature sensing device detects that the temperature of the first heat exchange unit 21 is greater than or equal to the second preset temperature, a signal is sent to the control device, and the control device controls the air conditioner to exit the defrosting mode and enter the heating mode. Optionally, the first preset temperature is less than or equal to 0 ℃ and greater than or equal to-10 ℃; the second preset temperature is more than or equal to 5 ℃ and less than or equal to 10 ℃.

In this embodiment, the heat exchange area of the first heat exchange unit 21 is S₁Second heat exchange unit22 has a heat exchange area S₂，S₂Ratio of S₁The ratio of (a) is in the range of 0.5 to 1. That is to say that the first and second electrodes,

it should be noted that, if the heat exchange unit is a tube-fin heat exchanger, the heat exchange area refers to the sum of the outer surface area of the heat exchange tube and the expansion area of the fins, and if the heat exchange unit is a microchannel heat exchanger, the heat exchange area refers to the sum of the outer surface area of the flat tubes and the expansion area of the fins.

In the present embodiment, the flow rate value of the first connection pipe 60 is Q when the air conditioner is in the defrost mode_{General assembly}The flow rate value of the second connection pipe 70 is Q₂，Q₂Ratio Q_{General assembly}The ratio of (a) is in the range of 0.3 to 0.6. Namely, it is

In specific implementation, the first flowmeter 80 and the second flowmeter 90 respectively monitor the flow rates of the refrigerant flowing through the first heat exchange unit and the second heat exchange unit, and the opening degree of the control valve 100 is adjusted to detect and control the flow rate flowing into the second heat exchange unit, so that the flow rates meet the following conditions. It should be noted that the method of controlling the flow through the second heat exchange unit by detecting the evaporator and condenser temperatures in the system is also within the scope of the present application if the flow calculation and the measured ratio are within the present requirements. Wherein Q is₂Is the flow passing through the second heat exchange unit; q_{Is always}The flow rate flowing through the first heat exchange unit is the total flow rate of the system.

It should be noted that, in the defrosting mode, a part of the refrigerant flowing out of the indoor heat exchanger passes through the second heat exchange unit, and then all the refrigerants pass through the first heat exchange unit together, which means that the heat exchange area of the outdoor heat exchanger is reduced, if the heat exchange area and the refrigerant flow of the second heat exchange unit cannot be reasonably designed and controlled, the heating effect of the system is greatly reduced, so that it is very important to design and control the heat exchange area and the refrigerant flow of the second heat exchange unit.

In specific implementation, the first port 41 is connected to the fifth port 51 through the fourth connection pipe 110; the first end 211 of the first heat exchange unit 21 is connected to the second valve port 42 through the sixth connection pipe 140; the first connection end 221 of the second heat exchange unit 22 is connected to the fourth valve port 44 through the eighth connection pipe 210.

In specific implementation, the third valve port 43 is connected to the tenth valve port 163 through a first branch pipe 170, and the second heat exchange connection end 12 of the indoor heat exchanger 10 is connected to the eighth valve port 161 through a second branch pipe 180; the ninth valve port 162 is connected with the air suction end through a third branch pipe 190; the eleventh port 164 is connected to the exhaust port via a fourth branch pipe 200.

In specific implementation, the third branch pipe 190 is provided with a liquid storage tank.

Specifically, as shown in fig. 2, the air conditioner is in a cooling mode: the refrigerant enters the eleventh valve port 164 through the exhaust end, enters the third valve port 43 after flowing out from the tenth valve port 163, flows out from the fourth valve port 44, enters the second heat exchange unit 22 for heat exchange, enters the seventh valve port 53, flows out from the fifth valve port 51, enters the first valve port 41, flows out from the second valve port 42, enters the first heat exchange unit 21, is throttled by the throttling device, enters the indoor heat exchanger 10, flows into the eighth valve port 161 after heat exchange, flows out from the ninth valve port 162, enters the liquid storage tank through the suction end, and the refrigeration cycle is completed.

Specifically, as shown in fig. 3, the air conditioner is in a heating mode: the refrigerant enters the eleventh valve port 164 through the exhaust end, enters the indoor heat exchanger 10 for heat exchange after flowing out of the eighth valve port 161, enters the first heat exchange unit 21, enters the second valve port 42, enters the fifth valve port 51 through the first valve port 41, enters the second heat exchange unit 22 through the refrigerant coming out of the seventh valve port 53, enters the fourth valve port 44, flows out of the third valve port 43, enters the tenth valve port 163, flows out of the ninth valve port 162, enters the liquid storage tank of the compressor, and the heating cycle is completed.

Specifically, as shown in fig. 4, the air conditioner is in a defrost mode: the refrigerant enters the eleventh valve port 164 through the exhaust end, flows out of the eighth valve port 161, is divided into two paths after passing through the indoor heat exchanger 10, flows into the second heat exchange unit 22 through the control valve for heat exchange on one path, enters the fourth valve port 44, flows out of the first valve port 41 to the fifth valve port 51, flows out of the sixth valve port 52, mixes with another refrigerant, throttles the refrigerant, flows into the first heat exchange unit 21, flows into the ninth valve port 162 through the second valve port 42, the third valve port 43 and the tenth valve port 163, and enters the compressor through the liquid storage tank.

The continuous heating seen in the patent that can be inquired at present is that one part of gas discharged by the compressor is used for indoor heat exchange, the other part is used for outdoor defrosting, the high-temperature refrigerant flowing through the indoor space is greatly reduced, the indoor heat exchange amount is also greatly reduced, and the comfort is greatly influenced. In the defrosting mode of this application, the refrigerant volume through indoor heat exchanger does not reduce, and indoor side heat transfer does not attenuate basically, not only can realize the continuous heating function, and the travelling comfort also does not receive the influence.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An air conditioner comprising an indoor heat exchanger (10), an outdoor heat exchanger (20) and a compressor (30), characterized in that the outdoor heat exchanger (20) comprises a first heat exchange unit (21) and a second heat exchange unit (22); the air conditioner also comprises a first reversing component (160) and a second reversing component (40), wherein the first reversing component (160) is connected with the second reversing component (40);

the first reversing component (160) has a first working state, and when the first reversing component (160) is in the first working state, the discharge end of the compressor (30) is communicated with the second heat exchange connecting end (12) of the indoor heat exchanger (10) through the first reversing component (160);

the second reversing component (40) has a third working state, and when the second reversing component (40) is in the third working state, the first connecting end (221) of the second heat exchange unit (22) is communicated with the second end (212) of the first heat exchange unit (21) through the second reversing component (40);

when the first reversing component (160) is in the first working state and the second reversing component (40) is in the third working state, the first end (211) of the first heat exchange unit (21) is communicated with the suction end of the compressor (30) through the second reversing component (40) and the first reversing component (160);

the first heat exchange connecting end (11) of the indoor heat exchanger (10) is communicated with the second end (212) of the first heat exchange unit (21); the first heat exchange connecting end (11) of the indoor heat exchanger (10) is connected with the second connecting end (222) of the second heat exchange unit (22) in a switching mode;

when the air conditioner is in a defrosting mode, the first reversing component (160) is in the first working state, the second reversing component (40) is in the third working state, the first heat exchange connecting end (11) of the indoor heat exchanger (10) is communicated with the second connecting end (222) of the second heat exchange unit (22), and when a refrigerant passes through the second heat exchange unit (22), heat exchange is carried out between the second heat exchange unit (22) and the first heat exchange unit (21).

2. The air conditioner according to claim 1, wherein the first direction changing member (160) has an eighth valve port (161), a ninth valve port (162), a tenth valve port (163) and an eleventh valve port (164), the eighth valve port (161) communicating with the second heat exchange connection end (12) of the indoor heat exchanger (10); the ninth valve port (162) is communicated with the suction end; the tenth valve port (163) is connected with the second direction changing component (40); the eleventh valve port (164) is in communication with the exhaust end;

when the first direction changing component (160) is in the first working state, the eighth valve port (161) is communicated with the eleventh valve port (164), and the ninth valve port (162) is communicated with the tenth valve port (163); the first direction changing component (160) further has a second working state, when the first direction changing component (160) is in the second working state, the eighth valve port (161) is communicated with the ninth valve port (162), and the tenth valve port (163) is communicated with the eleventh valve port (164).

3. The air conditioner according to claim 2, wherein the second direction changing member (40) has a first valve port (41), a second valve port (42), a third valve port (43) and a fourth valve port (44), the first valve port (41) is communicated with the second connection end (222) of the second heat exchanging unit (22) or the second end (212) of the first heat exchanging unit (21); the second valve port (42) is communicated with the first end (211) of the first heat exchange unit (21); the third port (43) communicates with the tenth port (163); the fourth valve port (44) is communicated with the first connecting end (221) of the second heat exchange unit (22);

when the second direction changing component (40) is in the third working state, the first valve port (41) is communicated with the fourth valve port (44), and the second valve port (42) is communicated with the third valve port (43); the second direction-changing component (40) further has a fourth working state, when the second direction-changing component (40) is in the fourth working state, the first valve port (41) is communicated with the second valve port (42), and the third valve port (43) is communicated with the fourth valve port (44).

4. The air conditioner according to claim 3, further comprising:

a third direction changing component (50), wherein the third direction changing component (50) is provided with a fifth valve port (51), a sixth valve port (52) and a seventh valve port (53), the fifth valve port (51) is communicated with the first valve port (41), the sixth valve port (52) is communicated with the second end (212) of the first heat exchanging unit (21), and the seventh valve port (53) is communicated with the second connecting end (222) of the second heat exchanging unit (22);

the third direction changing component (50) has a fifth working state and a sixth working state, and when the third direction changing component (50) is in the fifth working state, the fifth valve port (51) is communicated with the sixth valve port (52); when the third direction changing component (50) is in the sixth working state, the fifth valve port (51) is communicated with the seventh valve port (53).

5. The air conditioner according to claim 4, wherein when the air conditioner is in a defrosting mode, the third direction changing member (50) is in the fifth operation state; the air conditioner also has a cooling mode and a heating mode;

when the air conditioner is in the cooling mode, the first reversing component (160) is in the second working state, the second reversing component (40) is in the fourth working state, the third reversing component (50) is in the sixth working state, and the first heat exchange connection end (11) of the indoor heat exchanger (10) is disconnected from the second connection end (222) of the second heat exchange unit (22);

when the air conditioner is in the heating mode, the first reversing component (160) is in the first working state, the second reversing component (40) is in the fourth working state, the third reversing component (50) is in the sixth working state, and the first heat exchange connecting end (11) of the indoor heat exchanger (10) is disconnected with the second connecting end (222) of the second heat exchange unit (22).

6. The air conditioner according to claim 4, further comprising:

a first connection pipe (60), wherein one end of the first connection pipe (60) is connected with a first heat exchange connection end (11) of the indoor heat exchanger (10), and the other end of the first connection pipe (60) is connected with a second end (212) of the first heat exchange unit (21);

one end of the second connection pipe (70) is connected with the first connection pipe (60), and the other end of the second connection pipe (70) is connected with a second connection end (222) of the second heat exchange unit (22);

a third connection pipe (120), one end of the third connection pipe (120) being connected to the first connection pipe (60) and being located between the second connection pipe (70) and the first heat exchange unit (21), the other end of the third connection pipe (120) being connected to the second connection pipe (70);

wherein the third direction changing component (50) is arranged on the third connecting pipe (120), and the sixth valve port (52) and the seventh valve port (53) are located on the third connecting pipe (120).

7. The air conditioner according to claim 6, further comprising:

and the control valve (100) is arranged on the second connecting pipe (70) and is positioned on one side, far away from the second heat exchange unit (22), of the third connecting pipe (120).

8. The air conditioner according to claim 6, further comprising:

and a second flow meter (90) disposed on the second connection pipe (70) at a side of the third connection pipe (120) adjacent to the second heat exchange unit (22).

9. The air conditioner according to claim 6, further comprising:

a first flow meter (80) disposed on the first connection pipe (60) between the second connection pipe (70) and the indoor heat exchanger (10).

10. The air conditioner according to claim 6, further comprising:

a throttling means (130) provided on the first connection pipe (60) and between the third connection pipe (120) and the first heat exchange unit (21).

11. The air conditioner according to any one of claims 1 to 10, further comprising an outdoor fan (5), wherein the second heat exchange unit (22) is disposed on a side of the first heat exchange unit (21) away from the outdoor fan (5): at least the outer surface of the first heat exchange unit (21) and at least the outer surface of the second heat exchange unit (22) are in contact.

12. Air conditioner according to any of claims 1 to 10, characterized in that the heat exchange area of the first heat exchange unit (21) is S₁The heat exchange area of the second heat exchange unit (22) is S₂，S₂Ratio of S₁The ratio of (a) is in the range of 0.5 to 1.

13. Air conditioner according to any of claims 6 to 10, characterized in that the flow value of the first connection pipe (60) is Q when the air conditioner is in the defrost mode_{General assembly}The flow value of the second connecting pipe (70) is Q₂，Q₂Ratio Q_{General assembly}The ratio of (a) is in the range of 0.3 to 0.6.