A defrosting without stopping air conditioner and its control method

Abstract

The present application relates to the technical field of household appliances, and particularly relates to a defrosting non-stop air conditioner and a control method thereof. The defrosting non-stop air conditioner comprises: a refrigeration system comprising a refrigeration assembly, the refrigeration assembly having a compressor, an outdoor heat exchanger and an indoor heat exchanger for forming a refrigeration circuit, the indoor heat exchanger comprising a first heat exchange section and a second heat exchange section arranged side by side, and the refrigeration assembly being configured to make the refrigerant discharged from the compressor flow into the outdoor heat exchanger in sequence through the second heat exchange section and the first heat exchange section when the defrosting non-stop air conditioner is running in a defrosting mode, so as to defrost the outdoor heat exchanger; and an electric heater arranged at the first heat exchange section and used for heating the refrigerant in the first heat exchange section when the defrosting non-stop air conditioner is running in the defrosting mode, so as to increase the temperature of the refrigerant flowing into the outdoor heat exchanger. The defrosting non-stop air conditioner of the present application utilizes the heat exchange sections in the indoor heat exchanger and the electric heater, realizes the improvement of defrosting efficiency while defrosting non-stop, avoids the problems of low defrosting efficiency and poor defrosting effect, and improves the use experience of users.

Description

Technical Field

[0001] This invention relates to the field of home appliance technology, and in particular to an air conditioner that defrosts without stopping and its control method. Background Technology

[0002] When an air conditioner is in heating mode, the outdoor heat exchanger functions as an evaporator. When outdoor humidity is high, the air conditioner needs to shut down and control the four-way valve to reverse, defrosting the outdoor heat exchanger. Because defrosting takes a long time, and heating stops on the indoor side when the air conditioner is off, users may not receive warm air and experience large temperature fluctuations, resulting in a poor user experience. Currently, a type of air conditioner that defrosts without stopping has emerged. During outdoor heat exchanger defrosting, the indoor fan speed is reduced to its minimum, and the electronic expansion valve is opened to its maximum to increase the temperature of the refrigerant entering the outdoor heat exchanger, thus facilitating defrosting.

[0003] However, existing air conditioners that defrost without stopping, which use a method where the indoor fan speed is reduced to the minimum during defrosting, still suffer from poor defrosting performance due to the low temperature of the refrigerant entering the outdoor heat exchanger. Furthermore, even with the indoor fan speed reduced to the minimum, users may still not experience warm air blowing, and indoor temperature fluctuations may be significant. Summary of the Invention

[0004] In view of the above problems, the present invention proposes a defrosting non-stop air conditioner and its control method to overcome or at least partially solve the above problems.

[0005] One objective of the first aspect of this invention is to provide a control method for an air conditioner that operates without stopping during defrosting, so as to improve defrosting efficiency while achieving uninterrupted defrosting.

[0006] A further objective of the first aspect of the present invention is to reduce indoor temperature variations.

[0007] The second objective of this invention is to provide a defrosting-uninterrupted air conditioner using the above-described control method, thereby improving the user experience.

[0008] According to a first aspect of the present invention, the present invention provides a defrosting-uninterrupted air conditioner, comprising:

[0009] A refrigeration system includes a refrigeration assembly having a compressor for forming a refrigeration circuit, an outdoor heat exchanger, and an indoor heat exchanger. The indoor heat exchanger includes a first heat exchange section and a second heat exchange section arranged side-by-side. The refrigeration assembly is configured such that, during the defrosting mode of the air conditioner operating without stopping the defrost cycle, refrigerant discharged from the compressor flows sequentially through the second heat exchange section and the first heat exchange section before entering the outdoor heat exchanger to defrost the outdoor heat exchanger.

[0010] An electric heater is installed at the first heat exchange section to heat the refrigerant in the first heat exchange section when the air conditioner is in defrost mode without stopping defrosting, so as to increase the temperature of the refrigerant flowing into the outdoor heat exchanger.

[0011] Optionally, the refrigeration system also includes:

[0012] The air guiding assembly includes two indoor fans, which drive indoor air to exchange heat in the first heat exchange section and the second heat exchange section respectively.

[0013] Optionally, the air guide assembly also includes:

[0014] Two guide plates are used to adjust the air volume of the two indoor fans. The guide plates include a first guide plate corresponding to the first heat exchange section and a second guide plate corresponding to the second heat exchange section. The first guide plate is configured to close when the air conditioner is in defrosting mode to reduce the amount of cold air blown out.

[0015] Optionally, the refrigeration system also includes:

[0016] A throttling component, connected to the refrigeration circuit, is used to switch the refrigerant flow direction within the refrigeration circuit so that the first heat exchange section and the second heat exchange section are arranged in parallel or in series between the compressor and the outdoor heat exchanger.

[0017] Optionally, the throttling component includes:

[0018] The first throttling component is located between the inlet end of the outdoor heat exchanger and the refrigerant outlets of the two heat exchange sections, and is used to open or close the connection between the inlet end of the outdoor heat exchanger and the refrigerant outlets of the two heat exchange sections.

[0019] A second throttling component is disposed between the refrigerant inlet of the first heat exchange section and the refrigerant outlet of the second heat exchange section, for opening or closing the connection between the refrigerant inlet of the first heat exchange section and the refrigerant outlet of the second heat exchange section; and

[0020] The third throttling assembly is located between the compressor's discharge port and the refrigerant inlets of the two heat exchange sections, and is used to open or close the connection between the compressor's discharge port and the refrigerant inlets of the two heat exchange sections.

[0021] Optionally, the first throttling component includes:

[0022] An outdoor throttling device is installed between the inlet end of the outdoor heat exchanger and the refrigerant outlets of the two heat exchange sections. It is configured to open in the heating mode of the air conditioner during defrosting without stopping to throttle the refrigerant flowing to the outdoor heat exchanger and close in the defrosting mode of the air conditioner during defrosting without stopping.

[0023] The first throttling element is connected in parallel with the outdoor throttling device and is configured to open in defrost mode when the air conditioner is running without stopping during defrosting, thereby opening the connection between the inlet of the outdoor heat exchanger and the refrigerant outlet of the first heat exchange section; and

[0024] The second throttling element is disposed between the first throttling element and the refrigerant outlet of the second heat exchange section, and is configured to close when the defrosting air conditioner is in defrosting mode to shut off the connection between the inlet end of the outdoor heat exchanger and the refrigerant outlet of the second heat exchange section.

[0025] Optionally, the second throttling component includes:

[0026] A bypass pipe is installed between the refrigerant inlet of the first heat exchange section and the refrigerant outlet of the second heat exchange section. An indoor throttling device is installed on the bypass pipe. The indoor throttling device is configured to close when the air conditioner is in heating mode during defrosting and open when the air conditioner is in defrosting mode during defrosting to throttle the refrigerant flowing to the first heat exchange section.

[0027] Optionally, the third throttling component includes:

[0028] The first throttling branch is located between the compressor's discharge port and the refrigerant inlet of the first heat exchange section, and a third throttling element is installed on the first throttling branch. This third throttling element is configured to close during the defrosting mode of the air conditioner to disconnect the connection between the compressor's discharge port and the refrigerant inlet of the first heat exchange section; and

[0029] The second throttling branch is located between the compressor's discharge port and the refrigerant inlet of the second heat exchange section, and is used to connect the compressor's discharge port and the refrigerant inlet of the second heat exchange section.

[0030] According to a second aspect of the present invention, the present invention also provides a control method for an air conditioner that operates without stopping during defrosting, the air conditioner comprising:

[0031] A refrigeration system includes a refrigeration assembly having a compressor for forming a refrigeration circuit, an outdoor heat exchanger, and an indoor heat exchanger. The indoor heat exchanger includes a first heat exchange section and a second heat exchange section arranged side-by-side. The refrigeration assembly is configured such that, during the defrosting mode of the air conditioner operating without stopping the defrost cycle, refrigerant discharged from the compressor flows sequentially through the second heat exchange section and the first heat exchange section before entering the outdoor heat exchanger to defrost the outdoor heat exchanger.

[0032] An electric heater, installed at the first heat exchange section, is used to heat the refrigerant in the first heat exchange section during the defrost mode of the air conditioner that operates without stopping during defrost, thereby increasing the temperature of the refrigerant flowing into the outdoor heat exchanger; and

[0033] Control methods include:

[0034] Control the air conditioner to operate in heating mode during defrosting without stopping;

[0035] Determine whether the outdoor heat exchanger meets the preset defrosting conditions;

[0036] If so, then control the air conditioner to operate in defrost mode without stopping.

[0037] Optionally, after controlling the defrosting mode of the air conditioner that operates without stopping during defrosting, the control method further includes:

[0038] Get indoor and outdoor temperatures;

[0039] Based on the indoor and outdoor temperatures, adjust the operating parameters of the defrosting non-stop air conditioner to control the cooling capacity of the first heat exchange section and the heating capacity of the second heat exchange section.

[0040] The defrosting-uninterrupted air conditioner control method of the present invention configures the indoor heat exchanger with a first heat exchange section and a second heat exchange section arranged side by side, and configures the refrigeration components such that when the defrosting-uninterrupted air conditioner is running in defrosting mode, the refrigerant discharged from the compressor flows sequentially through the second heat exchange section and the first heat exchange section before entering the outdoor heat exchanger to defrost the outdoor heat exchanger. This achieves defrosting of the outdoor heat exchanger without stopping or reversing the operation. Furthermore, by providing an electric heater for heating the refrigerant in the first heat exchange section in defrosting mode, the heat absorbed by the first heat exchange section is increased, significantly raising the temperature of the refrigerant flowing into the outdoor heat exchanger, thereby improving defrosting efficiency.

[0041] Furthermore, the defrosting-uninterrupted air conditioner control method of the present invention, by setting two indoor fans that drive indoor air to exchange heat in the first heat exchange section and the second heat exchange section respectively, enables hot air to still be blown out normally from the indoor side when the defrosting-uninterrupted air conditioner is running in defrosting mode. While achieving uninterrupted defrosting, it reduces indoor temperature fluctuations and improves the user experience.

[0042] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0043] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0044] Figure 1 This is a schematic diagram of the structure of a defrosting-uninterrupted air conditioner according to an embodiment of the present invention;

[0045] Figure 2This is a schematic diagram of the structure of an air conditioner operating in heating mode during defrosting without stopping, according to an embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of the structure of an air conditioner operating in defrost mode during defrost operation according to an embodiment of the present invention;

[0047] Figure 4 This is a schematic diagram of the structure of a defrosting air conditioner according to another embodiment of the present invention;

[0048] Figure 5 This is a schematic block diagram of a defrosting-uninterrupted air conditioner according to an embodiment of the present invention;

[0049] Figure 6 This is a schematic diagram of a defrosting-uninterrupted air conditioning control method according to an embodiment of the present invention;

[0050] Figure 7 This is a control flowchart of a defrosting-uninterrupted air conditioning control method according to an embodiment of the present invention. Detailed Implementation

[0051] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0052] Figure 1 This is a schematic diagram of a defrosting-uninterrupted air conditioner according to an embodiment of the present invention. Figure 1 As shown, the defrosting-uninterrupted air conditioner 1 may include a refrigeration system 10, an indoor unit 20, an outdoor unit 30, and an electric heater (not shown in the figure). Specifically, the refrigeration system 10 may include a refrigeration component 100, an air guide component 200, and a throttling component 300.

[0053] The refrigeration assembly 100 includes a compressor 110, an outdoor heat exchanger 120, and an indoor heat exchanger 160 for forming a refrigeration circuit 150. The indoor heat exchanger 160 includes a first heat exchange section 130 and a second heat exchange section 140 arranged side-by-side. Figure 1 As shown, the compressor 110 and the outdoor heat exchanger 120 are located inside the outdoor unit 30, and the first heat exchange section 130 and the second heat exchange section 140 are located inside the indoor unit 20. The first heat exchange section 130 and the second heat exchange section 140 are used to exchange heat with indoor air to regulate the indoor temperature.

[0054] In this embodiment, the uninterrupted defrosting air conditioner 1 is configured to have a heating mode in which both the first heat exchange section 130 and the second heat exchange section 140 act as condensers and the outdoor heat exchanger 120 acts as an evaporator, and a defrosting mode in which the second heat exchange section 140 acts as a condenser and both the first heat exchange section 130 and the outdoor heat exchanger 120 act as evaporators. Specifically, when the uninterrupted defrosting air conditioner 1 operates in heating mode, the first heat exchange section 130 and the second heat exchange section 140 are connected in parallel so that both the first heat exchange section 130 and the second heat exchange section 140 act as condensers for heating. When the uninterrupted defrosting air conditioner 1 operates in defrosting mode, the first heat exchange section 130 and the second heat exchange section 140 are connected in series so that the second heat exchange section 140 acts as a condenser to heat the indoor space, and the first heat exchange section 130 acts as an evaporator to absorb heat, thereby increasing the refrigerant temperature. Based on this, the refrigeration component 100 is configured such that when the air conditioner 1 is running in defrost mode, the refrigerant discharged from the compressor 110 flows sequentially through the second heat exchange section 140 and the first heat exchange section 130 before entering the outdoor heat exchanger 120 to defrost the outdoor heat exchanger 120.

[0055] An electric heater is installed at the first heat exchange section 130 to heat the refrigerant in the first heat exchange section 130 when the air conditioner 1 is running in defrost mode.

[0056] The control method of the air conditioner 1 that operates without stopping during defrosting of the present invention improves defrosting efficiency by configuring the indoor heat exchanger 160 to have a first heat exchange section 130 and a second heat exchange section 140 arranged side by side, and configuring the refrigeration component 100 so that when the air conditioner 1 operates in defrosting mode, the refrigerant discharged from the compressor 110 flows sequentially through the second heat exchange section 140 and the first heat exchange section 130 before entering the outdoor heat exchanger 120 to defrost the outdoor heat exchanger 120. This achieves defrosting of the outdoor heat exchanger 120 without stopping or reversing the operation. Furthermore, by providing an electric heater for heating the refrigerant in the first heat exchange section 130 in defrosting mode, the heat absorbed by the first heat exchange section 130 is increased, significantly raising the temperature of the refrigerant flowing into the outdoor heat exchanger 120.

[0057] In some embodiments, the air guide assembly 200 includes two indoor fans, which drive indoor air to exchange heat in the first heat exchange section 130 and the second heat exchange section 140 respectively. This enables hot air to still be blown out normally from the indoor side when the air conditioner 1 is running in defrost mode, thereby reducing indoor temperature fluctuations and improving the user experience while achieving defrost without stopping.

[0058] Specifically, the two indoor fans are a first indoor fan 210 and a second indoor fan 220, respectively. Figure 1As shown, the first indoor fan 210 is correspondingly arranged with the first heat exchange section 130, and is used to drive indoor air to exchange heat with the first heat exchange section 130. The second indoor fan 220 is correspondingly arranged with the second heat exchange section 140, and is used to drive indoor air to exchange heat with the second heat exchange section 140.

[0059] Furthermore, the air guide assembly 200 also includes two guide plates. The two guide plates are used to adjust the airflow of the two indoor fans, and specifically include a first guide plate (not shown in the figure) corresponding to the first heat exchange section 130 and a second guide plate (not shown in the figure) corresponding to the second heat exchange section 140. Reducing the opening angle of the guide plate lowers the wind speed at the location of the guide plate; when the opening angle of the guide plate reaches its minimum value, the wind speed at the location of the guide plate is reduced to its lowest value. Based on this, in one specific embodiment, the first guide plate can be configured to have its opening angle at its minimum value when the air conditioner 1 is running in defrost mode to minimize the amount of cold air blown out. In another specific embodiment, the first guide plate can be configured to close when the air conditioner 1 is running in defrost mode to reduce the amount of cold air blown out.

[0060] When the air conditioner 1 operates in heating mode or defrosting mode without stopping during defrosting, the heat exchange efficiency between the first heat exchange section 130 and the second heat exchange section 140 and the indoor air can be controlled by adjusting the frequency of the compressor 110, the speed of the first indoor fan 210, the speed of the second indoor fan 220, the opening angle of the first guide plate and the opening angle of the second guide plate, thereby achieving independent control of the hot air volume and cold air volume delivered by the indoor unit 20.

[0061] It should be noted that the first heat exchange section 130 and the second heat exchange section 140 can be two parts of a single heat exchanger or two independent heat exchangers. The area ratio of the first heat exchange section 130 and the second heat exchange section 140 can be designed as needed. For example, the area ratio of the first heat exchange section 130 and the second heat exchange section 140 can be between 0.4 and 2.4. In a specific embodiment, the area ratio of the first heat exchange section 130 and the second heat exchange section 140 can be 1. In addition, the positional relationship between the first heat exchange section 130 and the second heat exchange section 140 can be arranged side by side or side by side, and the present invention does not limit this, as long as the defrosting non-stop air conditioner 1 can normally provide hot air to the room under the action of the indoor fan when operating in defrosting mode. For example, the defrosting non-stop air conditioner 1 can be a wall-mounted air conditioner, and the first heat exchange section 130 and the second heat exchange section 140 can be the left and right halves of the indoor heat exchanger of the wall-mounted air conditioner, respectively, and the area ratio of the first heat exchange section 130 and the second heat exchange section 140 is 1.

[0062] Furthermore, the specific locations of the first indoor fan 210 and the second indoor fan 220 can be set according to the air conditioner's form and actual needs. For example, the defrosting non-stop air conditioner 1 can be a wall-mounted air conditioner or a floor-standing air conditioner. In one specific embodiment, the first indoor fan 210 and the second indoor fan 220 can be respectively located at the bottom of the first heat exchange section 130 and the second heat exchange section 140. In another specific embodiment, the first indoor fan 210 and the second indoor fan 220 can also be respectively located at the top of the first heat exchange section 130 and the second heat exchange section 140. In yet another specific embodiment, the first indoor fan 210 and the second indoor fan 220 can also be respectively located at the rear of the first heat exchange section 130 and the second heat exchange section 140. Figure 1 The example only illustrates the case where the first indoor fan 210 and the second indoor fan 220 are respectively located at the top of the first heat exchange section 130 and the second heat exchange section 140, but it should not be regarded as a limitation on the specific location of the first indoor fan 210 and the second indoor fan 220.

[0063] In the defrosting-uninterrupted air conditioner 1 of this invention, the two heat exchange sections can independently perform cooling / heating. When defrosting is required, the second heat exchange section 140 heats the air, and the airflow speed of the second indoor fan 220 remains unchanged or increases. At this time, the user can continue to receive hot air and maintain the indoor temperature. Simultaneously, the first heat exchange section 130 performs evaporative heat absorption, and the airflow speed of the first indoor fan 210 is at a low level, the opening angle of the first guide plate reaches its minimum, and the amount of cold air delivered by the indoor unit 20 reaches its minimum. After the refrigerant undergoes evaporative heat absorption in the first heat exchange section 130, its temperature rises, and it absorbs heat released by the electric heater, resulting in a significant temperature increase. The heated refrigerant then enters the outdoor heat exchanger 120 to defrost it.

[0064] Figure 2 This is a schematic diagram of the defrosting non-stop air conditioning operation heating mode according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the defrosting mode of an air conditioner that operates without stopping during defrosting, according to an embodiment of the present invention. The following is in conjunction with... Figures 1-3 The structure of the defrosting non-stop air conditioner 1 of the present invention will be further described.

[0065] In some embodiments, such as Figures 1-3 As shown, the throttling component 300 is connected to the refrigeration circuit 150 and is used to switch the refrigerant flow direction in the refrigeration circuit 150 so that the first heat exchange section 130 and the second heat exchange section 140 are arranged in parallel or in series between the compressor 110 and the outdoor heat exchanger 120.

[0066] The defrosting-non-stop air conditioner 1 of the present invention can switch the refrigerant flow direction in the refrigeration circuit 150 and the parallel or series connection mode of the first heat exchange section 130 and the second heat exchange section 140 simply by setting a throttling component 300 connected to the refrigeration circuit 150. It does not require additional complex bypass defrosting pipelines, which simplifies the structure of the refrigeration system 10 and reduces production costs.

[0067] In some embodiments, such as Figures 1-3 As shown, the throttling component 300 may include a first throttling component 310, a second throttling component 320, and a third throttling component 330.

[0068] The first throttling assembly 310 is disposed between the inlet end 122 of the outdoor heat exchanger 120 and the refrigerant outlets of the two heat exchange sections, and is used to open or close the connection between the inlet end 122 of the outdoor heat exchanger 120 and the refrigerant outlets of the two heat exchange sections. The second throttling assembly 320 is disposed between the refrigerant inlet 132 of the first heat exchange section 130 and the refrigerant outlet 141 of the second heat exchange section 140, and is used to open or close the connection between the refrigerant inlet 132 of the first heat exchange section 130 and the refrigerant outlet 141 of the second heat exchange section 140. The third throttling assembly 330 is disposed between the outlet 111 of the compressor 110 and the refrigerant inlets of the two heat exchange sections, and is used to open or close the connection between the outlet 111 of the compressor 110 and the refrigerant inlets of the two heat exchange sections.

[0069] The defrosting-uninterrupted air conditioner 1 of the present invention comprises a throttling component 300 consisting of a first throttling component 310, a second throttling component 320, and a third throttling component 330. This enables the switching of the refrigerant flow direction within the refrigeration circuit 150 and the series / parallel connection of the first indoor heat exchanger 130 and the second indoor heat exchanger 140 using only the throttling component 300 connected to the refrigeration circuit 150. This eliminates the need for an additional complex bypass defrosting piping system, simplifies the structure of the refrigeration system 10, and reduces production costs.

[0070] In some embodiments, the first throttling assembly 310 may include an outdoor throttling device 311, a first throttling element 312, and a second throttling element 313. The outdoor throttling device 311 and the first throttling element 312 are disposed in the outdoor unit 30 of the defrosting non-stop air conditioner 1, and the second throttling element 313 is disposed in the indoor unit 20 of the defrosting non-stop air conditioner 1.

[0071] Specifically, the outdoor throttling device 311 is installed between the inlet end 122 of the outdoor heat exchanger and the refrigerant outlets of the two heat exchange sections. It is configured to open in the heating mode when the air conditioner 1 is running during defrosting without stopping the air conditioner, to throttle the refrigerant flowing to the outdoor heat exchanger 120, and to close in the defrosting mode when the air conditioner 1 is running during defrosting without stopping the air conditioner. The first throttling element 312 is connected in parallel with the outdoor throttling device 311 and is configured to open in the defrosting mode when the air conditioner 1 is running during defrosting without stopping the air conditioner, to open the connection between the inlet end 122 of the outdoor heat exchanger 120 and the first heat exchange section 130. This allows the high-temperature refrigerant flowing out of the refrigerant outlet 131 of the first heat exchange section 130 to directly enter the outdoor heat exchanger 120 without throttling and depressurization, thereby heating the outdoor heat exchanger 120 and improving the utilization rate of cooling capacity. The second throttling element 313 is disposed between the first throttling element 312 and the refrigerant outlet 141 of the second heat exchange section 140, and is configured to close when the defrosting non-stop air conditioner 1 is running in defrosting mode to shut off the connection between the inlet end 122 of the outdoor heat exchanger 120 and the refrigerant outlet 141 of the second heat exchange section 140.

[0072] In some embodiments, the second throttling component 320 may include a bypass pipe 321. The bypass pipe 321 is disposed within the indoor unit 20 of the defrosting uninterrupted air conditioner 1. The bypass pipe 321 is located between the refrigerant inlet 132 of the first heat exchange section 130 and the refrigerant outlet 141 of the second heat exchange section 140, and an indoor throttling device 322 is provided on the bypass pipe 321. The indoor throttling device 322 is used to regulate the refrigerant flow rate within the first heat exchange section 130. The indoor throttling device 322 is configured to close when the defrosting uninterrupted air conditioner 1 is operating in heating mode and open when the defrosting uninterrupted air conditioner 1 is operating in defrosting mode to throttle the refrigerant flowing to the first heat exchange section 130, thereby facilitating the absorption of more heat by the first heat exchange section 130.

[0073] In some embodiments, the third throttling assembly may include a first throttling branch 331 and a second throttling branch 333. The first throttling branch 331 is disposed between the outlet 111 of the compressor 110 and the refrigerant inlet 132 of the first heat exchange section 130. Specifically, a third throttling element 332 is disposed on the first throttling branch 331 and disposed within the indoor unit 20 of the defrosting uninterrupted air conditioner 1. The third throttling element 332 is disposed between the outlet 111 of the compressor 110 and the refrigerant inlet 132 of the first heat exchange section 130, and is configured to close when the defrosting uninterrupted air conditioner 1 is operating in defrosting mode to disconnect the connection between the outlet 111 of the compressor 110 and the refrigerant inlet 132 of the first heat exchange section 130. The second throttling branch 333 is disposed between the outlet 111 of the compressor 110 and the refrigerant inlet 132 of the first heat exchange section 130, and is used to connect the outlet 111 of the compressor 110 and the refrigerant inlet 142 of the second heat exchange section 140.

[0074] In some embodiments, the opening degree of the throttling element can be adjusted as needed. Specifically, the throttling element can be a shut-off valve. That is, the first throttling element 312, the second throttling element 313, and the third throttling element 332 can all be shut-off valves. The refrigeration system 10 of this embodiment, by setting a shut-off valve as the throttling element, has the advantages of simple structure, low price, and adjustable valve opening degree.

[0075] In some embodiments, the throttling device is an electronic expansion valve. That is, both the outdoor throttling device 311 and the indoor throttling device 322 can be electronic expansion valves. In some specific embodiments, the electronic expansion valve can not only play a role in throttling and reducing pressure, but also be used for flow control, thereby regulating the heat absorbed by the first heat exchange section 130 and further ensuring the stable operation of the refrigeration system 10.

[0076] When the air conditioner 1 operates in heating mode during defrosting without stopping, the outdoor throttling device 311, the second throttling element 313, and the third throttling element 332 are all open, while the first throttling element 312 and the indoor throttling device 322 are all closed. Therefore, the refrigeration circuit 150 can include a primary refrigeration circuit and a secondary refrigeration circuit. At this time, the refrigerant flow direction in the primary refrigeration circuit is: compressor 110 → first heat exchange section 130 → outdoor throttling device 311 → outdoor heat exchanger 120 → compressor 110; the refrigerant flow direction in the secondary refrigeration circuit is: compressor 110 → second heat exchange section 140 → outdoor throttling device 311 → outdoor heat exchanger 120 → compressor 110. Thus, the first heat exchange section 130 and the second heat exchange section 140 are arranged in parallel between the outlet 111 of the compressor 110 and the outlet of the outdoor throttling device 311, and both are used as condensers, thereby achieving conventional heating.

[0077] When the air conditioner 1 operates in defrost mode without stopping during defrost, the outdoor throttling device 311, the second throttling element 313, and the third throttling element 332 are all closed, while the first throttling element 312 and the indoor throttling device 322 are all open. Therefore, the refrigerant flow direction within the refrigeration circuit 150 is: compressor 110 → second heat exchange section 140 → indoor throttling device 322 → first heat exchange section 130 → outdoor heat exchanger 120 → compressor 110. This allows the first heat exchange section 130 and the second heat exchange section 140 to be connected in series between the outlet 111 of the compressor 110 and the inlet 122 of the first outdoor heat exchanger 120. The first heat exchange section 130 functions as an evaporator, and the second heat exchange section 140 functions as a condenser, thus enabling the second heat exchange section 140 to continue heating while defrosting continues without stopping, thereby reducing indoor temperature fluctuations.

[0078] It should be noted that the first heat exchange section 130 and the second heat exchange section 140 can be two parts of a whole heat exchanger or two independent heat exchangers.

[0079] Figure 4 This is a schematic diagram of a defrosting-uninterrupted air conditioner according to another embodiment of the present invention. Figure 4 As shown, the first heat exchange section 130 and the second heat exchange section 140 are two independent indoor heat exchangers.

[0080] Specifically, the defrosting-uninterrupted air conditioner 1 can be a vertical dual-column cabinet air conditioner. In this case, the first heat exchange section 130 and the second heat exchange section 140 can be heat exchangers in the left and right columns of the vertical dual-column cabinet air conditioner, respectively. The first heat exchange section 130 and the second heat exchange section 140 can be controlled separately to achieve independent control of the heating capacity on the left and the cooling capacity on the right, thus enabling temperature control under low cooling capacity demand.

[0081] Furthermore, the specific locations of the first indoor fan 210 and the second indoor fan 220 can be set according to actual needs. For example, in a specific embodiment where the defrosting non-stop air conditioner 1 is a vertical double-column cabinet air conditioner, the first indoor fan 210 and the second indoor fan 220 can be respectively located at the bottom of the first heat exchange section 130 and the second heat exchange section 140. In another specific embodiment, such as... Figure 4 As shown, the first indoor fan 210 and the second indoor fan 220 can also be respectively installed at the top of the first heat exchange section 130 and the second heat exchange section 140. Figure 4 The example only illustrates the case where the first indoor fan 210 and the second indoor fan 220 are respectively located at the top of the first heat exchange section 130 and the second heat exchange section 140, but it should not be regarded as a limitation on the specific location of the first indoor fan 210 and the second indoor fan 220.

[0082] Figure 5 This is a schematic block diagram of a defrosting-uninterrupted air conditioner according to an embodiment of the present invention. The defrosting-uninterrupted air conditioner 1 of the present invention may further include a processing module 40 and a storage module 50.

[0083] A collection of at least some functional modules in processing module 40 and storage module 50, used for storing data.

[0084] The storage module 50 and the processing module 40 can form part of the main control board of the defrosting non-stop air conditioner 1. The processing module 40 can be a central processing unit (CPU) or a digital processing unit (DSP), etc. The storage module 50 is used to store the program executed by the processing module 40. The storage module 50 stores a machine-executable program 51, which, when executed by the processing module 40, is used to implement the control method of the defrosting non-stop air conditioner 1 according to any of the following embodiments.

[0085] Figure 6This is a schematic diagram of a control method for an air conditioner that operates without stopping during defrosting, according to an embodiment of the present invention. The control method generally includes:

[0086] Step S602: Control the defrosting non-stop air conditioner 1 to operate in heating mode. When the defrosting non-stop air conditioner 1 is operating in heating mode, both the first heat exchange section 130 and the second heat exchange section 140 act as condensers for heating.

[0087] Step S604: Determine whether the outdoor heat exchanger 120 meets the preset defrosting conditions. If so, proceed to step S606.

[0088] Step S606: Control the air conditioner 1 to operate in defrost mode. When the air conditioner 1 operates in defrost mode, the first heat exchange section 130 acts as an evaporator to absorb heat and the second heat exchange section 140 acts as a condenser to maintain the temperature.

[0089] The control method of the air conditioner 1 that defrosts without stopping in this embodiment determines whether the outdoor heat exchanger 120 meets the preset defrosting conditions after controlling the air conditioner 1 to run in heating mode. If it is confirmed that the outdoor heat exchanger 120 meets the preset defrosting conditions, the air conditioner 1 is controlled to run in defrosting mode. The outdoor heat exchanger 120 can be defrosted without stopping or reversing. While achieving defrosting without stopping, indoor temperature fluctuations are reduced, and the user experience is improved.

[0090] In some embodiments, step S604 can be specifically executed as follows: detecting outdoor humidity; determining whether the outdoor humidity reaches a preset humidity threshold; if yes, determining that the outdoor heat exchanger 120 meets the preset defrosting conditions; if no, determining that the outdoor heat exchanger 120 does not meet the preset defrosting conditions. In other embodiments, step S604 can also be executed in other ways, and the present invention does not limit the preset defrosting conditions.

[0091] In some embodiments, after step S606 above, the control method of the present invention may further include the following step: if it is determined that the outdoor heat exchanger 120 does not meet the preset defrosting conditions, control the defrosting non-stop air conditioner 1 to maintain the heating mode.

[0092] The control method of the defrosting-uninterrupted air conditioner 1 in this embodiment ensures stable operation of the defrosting-uninterrupted air conditioner 1 in normal heating mode by controlling the defrosting-uninterrupted air conditioner 1 to continue operating in heating mode when it is determined that the outdoor heat exchanger 120 does not meet the preset defrosting conditions.

[0093] In some embodiments, after step S606 above, the control method of the present invention may further include the following steps: acquiring indoor temperature Tn and outdoor temperature Tw; adjusting the operating parameters of the defrosting non-stop air conditioner 1 according to the indoor temperature Tn and outdoor temperature Tw to control the cooling capacity of the first heat exchange section 130 and the heating capacity of the second heat exchange section 140. Indoor temperature Tn is the ambient temperature of the room where indoor unit 20 is located, and outdoor temperature Tw is the ambient temperature of the room where outdoor unit 30 is located. Both indoor temperature Tn and outdoor temperature Tw can be detected by temperature sensors.

[0094] The control method of the air conditioner 1 that operates continuously during defrosting according to the rate of change of indoor temperature Tn in defrosting mode adjusts the operating parameters of the air conditioner 1 to control the cooling capacity of the first heat exchange section 130 and the heating capacity of the second heat exchange section 140. This achieves accurate adjustment of the cooling capacity of the first heat exchange section 130 and the heating capacity of the second heat exchange section 140, thereby realizing temperature control in defrosting mode.

[0095] Furthermore, the operating parameters of the defrosting non-stop air conditioner 1 may include the on / off state of the electric heater, the opening degree of the indoor throttling device 322, the speed of the first indoor fan 210, and the speed of the second indoor fan 220.

[0096] Based on this, the steps for adjusting the operating parameters of the defrosting air conditioner 1 according to the indoor temperature Tn and the outdoor temperature Tw can include the following steps: determining whether the indoor temperature Tn is greater than a first preset temperature; if so, then the electric heater is not turned on, and the indoor throttling device 322 is controlled to increase its opening degree by a first increment, the first indoor fan 210 is operated at a first speed, and the second indoor fan 220 is controlled to decrease its speed by a first decrement value; if not, then it is sequentially determined whether the indoor temperature Tn is not greater than a second preset temperature and whether the outdoor temperature Tw is greater than a third preset temperature; based on the determination results, the operation of the defrosting air conditioner 1 is controlled. In other words, when the indoor temperature Tn is greater than the first preset temperature, there is no need to consider the outdoor temperature Tw, and the operation of the defrosting air conditioner 1 can be directly controlled according to the corresponding operating parameters, thereby simplifying the determination process and improving the execution efficiency.

[0097] It should be noted that the first preset temperature is greater than the second preset temperature. The first, second, and third preset temperatures can be set as needed. For example, the first preset temperature can be in the range of 24℃ to 28℃, the second preset temperature can be in the range of 20℃ to 24℃, and the third preset temperature can be in the range of -5℃ to 5℃. In a specific embodiment, the first preset temperature can be 26℃, the second preset temperature can be 22℃, and the third preset temperature can be 0℃.

[0098] In some embodiments, the step of controlling the operation of the defrosting air conditioner 1 based on the determination result may include the following steps:

[0099] When the indoor temperature Tn is greater than the second preset temperature and the outdoor temperature Tw is not greater than the third preset temperature, the electric heater is turned on, and the indoor throttling device 322 is controlled to increase the opening degree with the first increment, the first indoor fan 210 is run at the first speed, and the second indoor fan 220 is reduced in speed with the second deceleration value.

[0100] When the indoor temperature Tn is greater than the second preset temperature and the outdoor temperature Tw is greater than the third preset temperature, the electric heater is not turned on, and the indoor throttling device 322 is controlled to increase the opening degree with the second increment, the first indoor fan 210 is operated at the second speed and the second indoor fan 220 is maintained at the speed.

[0101] When the indoor temperature Tn is not greater than the second preset temperature and the outdoor temperature Tw is not greater than the third preset temperature, the electric heater is turned on, and the indoor throttling device 322 is controlled to maintain its opening, the first indoor fan 210 operates at the third speed, and the second indoor fan 220 reduces its speed by the second reduction value; and

[0102] When the indoor temperature Tn is not greater than the second preset temperature and the outdoor temperature Tw is greater than the third preset temperature, the electric heater is not turned on, and the indoor throttling device 322 is controlled to maintain its opening, the first indoor fan 210 is operated at the third speed and the second indoor fan 220 is maintained at its speed.

[0103] It should be noted that the first increment is greater than the second increment, the first deceleration is greater than the second deceleration, and the first rotational speed is greater than the second rotational speed, which in turn is greater than the third rotational speed. For example, the first increment can be in the range of 75 to 125 steps, the second increment can be in the range of 25 to 75 steps, the first deceleration can be in the range of 250 r / min to 350 r / min, the second deceleration can be in the range of 150 r / min to 250 r / min, the first rotational speed can be in the range of 250 r / min to 350 r / min, the second rotational speed can be in the range of 150 r / min to 250 r / min, and the third rotational speed can be in the range of 50 r / min to 150 r / min. In a specific embodiment, the first increment can be 100 steps, the second increment can be 50 steps, the first deceleration can be 300 r / min, the second deceleration can be 200 r / min, the first rotational speed can be 300 r / min, the second rotational speed can be 200 r / min, and the third rotational speed can be 100 r / min.

[0104] The defrosting-uninterrupted air conditioner 1 control method of the present invention, by pre-setting the correspondence between judgment results and operating parameters, realizes the rapid determination of suitable operating parameters of the defrosting-uninterrupted air conditioner 1 based on indoor temperature Tn and outdoor temperature Tw, thereby further ensuring the effect of outdoor defrosting and indoor heating.

[0105] In addition, the defrosting-uninterrupted air conditioner 1 also includes a first guide plate for adjusting the air volume of the first indoor fan 210 and a second guide plate for adjusting the air volume of the second indoor fan 220. The operating parameters of the defrosting-uninterrupted air conditioner 1 may also include the opening angle of the first guide plate and the opening angle of the second guide plate. Based on this, the steps for adjusting the operating parameters of the defrosting-uninterrupted air conditioner 1 may further include the following step: reducing the opening angle of the first guide plate to reduce the amount of cold air blown out.

[0106] Figure 7 This is a control flowchart of a defrosting-uninterrupted air conditioning control method according to an embodiment of the present invention. The control flowchart... Figure 1 Generally, it may include:

[0107] Step S702: Control the defrosting non-stop air conditioner 1 to operate in heating mode. When the defrosting non-stop air conditioner 1 operates in heating mode, both the first heat exchange section 130 and the second heat exchange section 140 act as condensers for heating, thereby achieving conventional heating.

[0108] Step S704: Determine whether the outdoor heat exchanger 120 meets the preset defrosting conditions. If yes, proceed to step S706; otherwise, proceed to step S728.

[0109] Step S706: Control the air conditioner 1 to operate in defrost mode. When the air conditioner 1 operates in defrost mode, the first heat exchange section 130 acts as an evaporator to absorb heat and the second heat exchange section 140 acts as a condenser to generate heat, thereby achieving uninterrupted defrosting.

[0110] Step S708: Obtain the indoor temperature Tn and the outdoor temperature Tw.

[0111] Step S710: Determine whether the indoor temperature Tn is greater than 26℃. If yes, proceed to step S712; otherwise, proceed to step S714.

[0112] In step S712, the electric heater is not turned on, and the opening of the indoor throttling device 322 is increased by 100 steps, the first indoor fan 210 runs at 300 r / min, and the speed of the second indoor fan 220 is reduced by 300 r / min. This completes the current process.

[0113] Step S714: Determine if the indoor temperature Tn is not greater than 22℃. If yes, proceed to step S716; otherwise, proceed to step S722. It should be noted that...

[0114] Step S716: Determine if the outdoor temperature Tw is greater than 0. If yes, proceed to step S718; otherwise, proceed to step S720.

[0115] In step S718, the electric heater is not turned on, and the indoor throttling device 322 is kept open, the first indoor fan 210 is running at 100 r / min, and the second indoor fan 220 is kept running at its speed. This completes the current process.

[0116] In step S720, the electric heater is turned on, and the indoor throttling device 322 is kept open, the first indoor fan 210 is running at 100 r / min, and the speed of the second indoor fan 220 is reduced by 200 r / min. This completes the process.

[0117] Step S722: Determine if the outdoor temperature Tw is greater than 0. If yes, proceed to step S724; otherwise, proceed to step S726.

[0118] In step S724, the electric heater is not turned on, and the opening of the indoor throttling device 322 is increased by 50 steps. The first indoor fan 210 runs at 200 r / min, and the second indoor fan 220 maintains its speed. This completes the current process.

[0119] Step S726: Turn on the electric heater, and increase the opening of the indoor throttling device 322 by 100 steps, run the first indoor fan 210 at 300 r / min, and reduce the speed of the second indoor fan 220 by 200 r / min. This completes the process.

[0120] Step S728: Control the defrosting air conditioner 1 to maintain heating mode. This concludes the process.

[0121] The control method of the air conditioner 1 that defrosts without stopping the air conditioner 1 of the present invention determines whether the outdoor heat exchanger 120 meets the preset defrosting conditions after controlling the air conditioner 1 to run in heating mode. If it is confirmed that the outdoor heat exchanger 120 meets the preset defrosting conditions, the air conditioner 1 is controlled to run in defrosting mode. The outdoor heat exchanger 120 can be defrosted without stopping or reversing the operation. While achieving defrosting without stopping the air conditioner 120, indoor temperature fluctuations are reduced, and the user experience is improved.

[0122] Furthermore, the control method of the defrosting-uninterrupted air conditioner 1 of the present invention adjusts the operating parameters of the defrosting-uninterrupted air conditioner 1 according to the rate of change of indoor temperature Tn in the defrosting mode to control the cooling capacity of the first heat exchange section 130 and the heating capacity of the second heat exchange section 140, thereby achieving accurate adjustment of the cooling capacity of the first heat exchange section 130 and the heating capacity of the second heat exchange section 140, and thus achieving temperature control in the defrosting mode.

[0123] In the description of the embodiments of the present invention, it should be understood that the terms "first," "second," "primary," and "secondary," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined as "first," "second," "primary," and "secondary" may explicitly or implicitly include at least one of those features, that is, include one or more of those features.

[0124] Unless otherwise expressly specified and limited, the terms "connection" and "communication," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0125] Those skilled in the art should also understand that the terms "upper," "lower," "front," "rear," "left," and "right" used in the embodiments of the present invention to indicate orientation or positional relationship are based on the actual usage state of the defrosting non-stop air conditioner 1. These terms are only for the convenience of describing and understanding the technical solution of the present invention, and are not intended to indicate or imply that the device or device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0126] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1. A defrosting-uninterrupted air conditioner, comprising: A refrigeration system includes a refrigeration component and a throttling component. The refrigeration component has a compressor for forming a refrigeration circuit, an outdoor heat exchanger, and an indoor heat exchanger. The indoor heat exchanger includes a first heat exchange section and a second heat exchange section arranged side by side. The refrigeration component is configured such that, when the defrosting air conditioner is in defrosting mode, the refrigerant discharged from the compressor flows sequentially through the second heat exchange section and the first heat exchange section before entering the outdoor heat exchanger. This allows the second heat exchange section to act as a condenser to heat the indoor space, and the first heat exchange section to act as an evaporator to absorb heat, thereby increasing the refrigerant temperature to defrost the outdoor heat exchanger. as well as An electric heater, installed at the first heat exchange section, is used to heat the refrigerant in the first heat exchange section when the defrosting air conditioner is operating in defrosting mode, thereby increasing the temperature of the refrigerant flowing into the outdoor heat exchanger; wherein The throttling component is connected to the refrigeration circuit and is used to switch the refrigerant flow direction within the refrigeration circuit, so that the first heat exchange section and the second heat exchange section are arranged in parallel or series between the compressor and the outdoor heat exchanger; and the throttling component includes: The first throttling component is disposed between the inlet end of the outdoor heat exchanger and the refrigerant outlets of the two heat exchange sections, for opening or closing the connection between the inlet end of the outdoor heat exchanger and the refrigerant outlets of the two heat exchange sections. The second throttling component is disposed between the refrigerant inlet of the first heat exchange section and the refrigerant outlet of the second heat exchange section, and is used to open or close the connection between the refrigerant inlet of the first heat exchange section and the refrigerant outlet of the second heat exchange section. as well as The third throttling assembly is disposed between the exhaust port of the compressor and the refrigerant inlets of the two heat exchange sections, and is used to open or close the connection between the exhaust port of the compressor and the refrigerant inlets of the two heat exchange sections.

2. The defrosting-uninterrupted air conditioner according to claim 1, wherein, The refrigeration system also includes: The air guiding assembly includes two indoor fans, which drive indoor air to exchange heat in the first heat exchange section and the second heat exchange section, respectively.

3. The defrosting-uninterrupted air conditioner according to claim 2, wherein, The air guide assembly also includes: Two guide plates are provided, which are used to adjust the air volume of the two indoor fans respectively. The guide plates include a first guide plate corresponding to the first heat exchange section and a second guide plate corresponding to the second heat exchange section. The first guide plate is configured to be closed when the defrosting air conditioner is running in the defrosting mode to reduce the amount of cold air blown out.

4. The defrosting-uninterrupted air conditioner according to claim 1, wherein, The first throttling component includes: An outdoor throttling device is installed between the inlet end of the outdoor heat exchanger and the refrigerant outlets of the two heat exchange sections, and is configured to open in the heating mode of the defrosting non-stop air conditioner to throttle the refrigerant flowing to the outdoor heat exchanger and close in the defrosting mode of the defrosting non-stop air conditioner. A first throttling element is connected in parallel with the outdoor throttling device and configured to open when the defrosting air conditioner is running in defrosting mode to open the connection between the inlet end of the outdoor heat exchanger and the refrigerant outlet of the first heat exchange section; and The second throttling element is disposed between the first throttling element and the refrigerant outlet of the second heat exchange section, and is configured to close when the defrosting non-stop air conditioner is operating in the defrosting mode to shut off the connection between the inlet end of the outdoor heat exchanger and the refrigerant outlet of the second heat exchange section.

5. The defrosting-uninterrupted air conditioner according to claim 4, wherein, The second throttling component includes: A bypass pipe is installed between the refrigerant inlet of the first heat exchange section and the refrigerant outlet of the second heat exchange section, and an indoor throttling device is installed on the bypass pipe. The indoor throttling device is configured to close when the defrosting non-stop air conditioner is in heating mode and open when the defrosting non-stop air conditioner is in defrosting mode to throttle the refrigerant flowing to the first heat exchange section.

6. The defrosting-uninterrupted air conditioner according to claim 4, wherein, The third throttling component includes: A first throttling branch is provided between the compressor's discharge port and the refrigerant inlet of the first heat exchange section, and a third throttling element is provided on the first throttling branch. The third throttling element is configured to close when the defrosting air conditioner is operating in defrosting mode, thereby cutting off the connection between the compressor's discharge port and the refrigerant inlet of the first heat exchange section; and The second throttling branch is located between the compressor's exhaust port and the refrigerant inlet of the second heat exchange section, and is used to connect the compressor's exhaust port and the refrigerant inlet of the second heat exchange section.

7. A control method for a defrosting-uninterrupted air conditioner, the defrosting-uninterrupted air conditioner comprising: A refrigeration system includes a refrigeration component and a throttling component. The refrigeration component has a compressor for forming a refrigeration circuit, an outdoor heat exchanger, and an indoor heat exchanger. The indoor heat exchanger includes a first heat exchange section and a second heat exchange section arranged side by side. The refrigeration component is configured such that, when the defrosting air conditioner is in defrosting mode, the refrigerant discharged from the compressor flows sequentially through the second heat exchange section and the first heat exchange section before entering the outdoor heat exchanger. This allows the second heat exchange section to act as a condenser to heat the indoor space, and the first heat exchange section to act as an evaporator to absorb heat, thereby increasing the refrigerant temperature to defrost the outdoor heat exchanger. as well as An electric heater, installed at the first heat exchange section, is used to heat the refrigerant in the first heat exchange section when the defrosting air conditioner is operating in defrosting mode, thereby increasing the temperature of the refrigerant flowing into the outdoor heat exchanger; wherein The throttling component is connected to the refrigeration circuit and is used to switch the refrigerant flow direction in the refrigeration circuit so that the first heat exchange section and the second heat exchange section are arranged in parallel or in series between the compressor and the outdoor heat exchanger. The throttling component includes: The first throttling component is disposed between the inlet end of the outdoor heat exchanger and the refrigerant outlets of the two heat exchange sections, for opening or closing the connection between the inlet end of the outdoor heat exchanger and the refrigerant outlets of the two heat exchange sections. A second throttling component is disposed between the refrigerant inlet of the first heat exchange section and the refrigerant outlet of the second heat exchange section, for opening or closing the connection between the refrigerant inlet of the first heat exchange section and the refrigerant outlet of the second heat exchange section; and A third throttling assembly is disposed between the compressor's discharge port and the refrigerant inlets of the two heat exchange sections, for opening or closing the connection between the compressor's discharge port and the refrigerant inlets of the two heat exchange sections; and The control method includes: Control the defrosting air conditioner to operate in heating mode; Determine whether the outdoor heat exchanger meets the preset defrosting conditions; If so, the defrosting air conditioner is controlled to operate in the defrosting mode.

8. The control method according to claim 7, wherein, After the step of controlling the defrosting air conditioner to operate in the defrosting mode, the control method further includes: Get indoor and outdoor temperatures; Based on the indoor temperature and the outdoor temperature, the operating parameters of the defrosting non-stop air conditioner are adjusted to control the cooling capacity of the first heat exchange section and the heating capacity of the second heat exchange section.

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