Air conditioner capable of automatically adjusting HP and HR modes and algorithm thereof

Abstract

The application discloses an air conditioner capable of automatically adjusting HP and HR modes and an algorithm thereof, an electric ball valve is additionally added on hardware, and a corresponding control algorithm is additionally added on software, so that the ECO HR product simultaneously has HP and HR functions, the mode of HP or HR is self-adapted according to the requirement of a user, and meanwhile, the operation mode is reduced, and the management cost is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioner capable of automatically adjusting HP and HR modes and an algorithm thereof. Background Art

[0002] In order to adapt to different application scenarios, existing air conditioners are designed, produced and manufactured separately as different products.

[0003] As a result, there are many operating models and high management costs; customers cannot switch applicable scenarios. Summary of the Invention

[0004] In view of this, the present invention provides an air conditioner and an algorithm thereof that can automatically adjust the HP and HR modes, so that the product has both HP and HR functions.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An air conditioner capable of automatically adjusting HP and HR modes comprises: an outdoor unit;

[0007] The outdoor unit includes: a compressor, a condenser, a four-way valve and a throttling device;

[0008] The air outlet of the compressor is connected to the first port of the four-way valve;

[0009] The second port of the four-way valve is connected to the high-pressure air pipe maintenance valve through a first pipeline; the first pipeline is provided with an electric ball valve;

[0010] The third port of the four-way valve is connected to the air inlet of the compressor and the low-pressure air pipe maintenance valve;

[0011] The fourth port of the four-way valve is connected to the first port of the condenser, and the second port of the condenser is connected to the liquid pipe maintenance valve; the fourth port of the four-way valve is also connected to the high-pressure gas pipe maintenance valve through a second pipeline; the second pipeline is provided with a main refrigeration one-way valve and a main refrigeration solenoid valve in series.

[0012] Preferably, when the user's demand is the HP function, the high-pressure gas pipe maintenance valve and the liquid pipe maintenance valve are connected to the indoor unit respectively;

[0013] During cooling, the high-pressure and high-temperature gas refrigerant passes through the four-way valve to condense in the outdoor condenser, and then the high-temperature and high-pressure liquid refrigerant passes through the throttling device to be intercepted and reduced in pressure, and then passes through the liquid pipe maintenance valve to the indoor unit for cooling. Finally, the low-pressure and low-temperature gas refrigerant passes through the high-pressure gas pipe maintenance valve and the four-way valve to flow back to the compressor to complete the refrigeration cycle;

[0014] During heating, the high-temperature and high-pressure gas refrigerant flows into the indoor unit through the reversed four-way valve and the high-pressure gas pipe maintenance valve for heating, and then the high-temperature and high-pressure liquid refrigerant is intercepted and reduced in pressure by the throttling device to the outdoor condenser to become a low-temperature and low-pressure gas and flows back to the compressor to complete the heating cycle.

[0015] Preferably, when the user's demand is the HR function, the high-pressure gas pipe maintenance valve, the low-pressure gas pipe maintenance valve, and the liquid pipe maintenance valve are connected to the indoor unit respectively;

[0016] During cooling operation, the high-pressure and high-temperature gas refrigerant passes through the four-way valve to condense in the outdoor condenser, and then the high-temperature and high-pressure liquid refrigerant passes through the throttling device to be intercepted and reduced in pressure, and then passes through the liquid pipe maintenance valve to the indoor unit for cooling. Finally, the low-pressure and low-temperature gas refrigerant passes through the low-pressure gas pipe maintenance valve and the four-way valve back to the compressor to complete the refrigeration cycle;

[0017] During heating operation, the electric ball valve opens, and the high-temperature and high-pressure gas refrigerant is directly distributed to each indoor unit through the high-pressure gas pipe maintenance valve via the MCU for heating. Then, the low-pressure and low-temperature gas refrigerant directly enters the compressor from the MCU via the low-pressure gas pipe maintenance valve, and the high-temperature and high-pressure liquid refrigerant flows back to the compressor through the liquid pipe maintenance valve, the throttling device, the condenser, and the four-way valve in sequence, completing the heating cycle.

[0018] Preferably, when the main refrigeration is running:

[0019] Most of the high-pressure and high-temperature gas refrigerant passes through the four-way valve to condense in the outdoor condenser, and then the high-temperature and high-pressure liquid refrigerant passes through the throttling device to be intercepted and reduced in pressure, and then passes through the liquid pipe maintenance valve to the indoor unit for cooling;

[0020] A small amount of high-pressure and high-temperature gas refrigerant flows into the indoor unit through the high-pressure gas pipe maintenance valve to perform heating;

[0021] The low-temperature, low-pressure refrigerant after heating passes through the MCU and merges with the low-temperature, low-pressure refrigerant after main refrigeration, and flows back to the compressor from the low-pressure gas pipe maintenance valve to complete the main refrigeration operation cycle.

[0022] Preferably, when the main heating mode is in operation, the electric ball valve is opened:

[0023] High-pressure and high-temperature gas refrigerant flows into the indoor unit through the high-pressure gas pipe maintenance valve, most of which is used for heating and a small part is used for cooling;

[0024] The low-temperature and low-pressure refrigerant after refrigeration directly enters the compressor from the low-pressure gas pipe maintenance valve; the high-temperature and high-pressure liquid refrigerant after main heating passes through the outdoor condenser, and then flows back to the compressor through the four-way valve to complete the main heating operation cycle.

[0025] Preferably, the first pipeline and the second pipeline are connected in parallel to the first node and then connected to the high-pressure gas pipe maintenance valve;

[0026] The fourth port of the four-way valve is also connected to the low-pressure air pipe maintenance valve through a second pipeline;

[0027] A third pipeline is further connected between the first node and the low-pressure gas pipe maintenance valve, and the third pipeline is provided with a second hot gas bypass valve.

[0028] An air conditioning algorithm capable of automatically adjusting HP and HR modes, using the air conditioning algorithm capable of automatically adjusting HP and HR modes as described above, wherein when a control command of the HP function is received, the feedback signal from the MCU is negative, the high-pressure gas pipe maintenance valve and the liquid pipe maintenance valve are connected to the indoor unit respectively, and the electric ball valve is opened;

[0029] When receiving the control instruction of the HR function, the feedback signal of the MCU is yes, and the high-pressure gas pipe maintenance valve, the low-pressure gas pipe maintenance valve and the liquid pipe maintenance valve are connected to the indoor unit respectively.

[0030] Preferably, when a cooling command of the HP function is received,

[0031] The high-pressure and high-temperature gas refrigerant passes through the four-way valve to condense in the outdoor condenser, and then the high-temperature and high-pressure liquid refrigerant passes through the throttling device to be intercepted and reduced in pressure, and passes through the liquid pipe maintenance valve to the indoor unit for refrigeration. Finally, the low-pressure and low-temperature gas refrigerant passes through the high-pressure gas pipe maintenance valve and the four-way valve to return to the compressor to complete the refrigeration cycle;

[0032] When the heating command of the HP function is received, the high-temperature and high-pressure gas refrigerant flows into the indoor unit through the reversed four-way valve and the high-pressure gas pipe maintenance valve for heating, and then the high-temperature and high-pressure liquid refrigerant is intercepted and reduced in pressure by the throttling device to the outdoor condenser to become a low-temperature and low-pressure gas and flows back to the compressor to complete the heating cycle.

[0033] Preferably, when a cooling operation instruction of the HR function is received, the high-pressure and high-temperature gas refrigerant is condensed in the outdoor condenser through the four-way valve, and then the high-temperature and high-pressure liquid refrigerant is intercepted and reduced in pressure by the throttling device, and flows through the liquid pipe maintenance valve to the indoor unit for cooling, and finally the low-pressure and low-temperature gas refrigerant flows back to the compressor through the low-pressure gas pipe maintenance valve and the four-way valve to complete the refrigeration cycle;

[0034] When the heating operation instruction of the HR function is received, the electric ball valve is opened, the high-temperature and high-pressure gas refrigerant is distributed to each indoor unit via the MCU through the high-pressure gas pipe maintenance valve for heating, then the low-temperature and low-pressure gas refrigerant directly enters the compressor from the MCU through the low-pressure gas pipe maintenance valve, the high-temperature and high-pressure liquid refrigerant flows back to the compressor in turn through the liquid pipe maintenance valve, the throttling device, the condenser and the four-way valve, and the heating cycle is completed.

[0035] Preferably, when the main refrigeration operation instruction of the HR function is received, most of the high-temperature and high-pressure gas refrigerant is condensed in the outdoor condenser through the four-way valve, then the high-temperature and high-pressure liquid refrigerant is throttled and depressurized through the throttling device, and is sent to the indoor unit through the liquid pipe maintenance valve for refrigeration; a small part of the high-temperature and high-pressure gas refrigerant flows into the indoor unit through the high-pressure gas pipe maintenance valve for heating, and the low-temperature and low-pressure refrigerant after heating and the low-temperature and low-pressure refrigerant after main refrigeration are combined to flow back to the compressor from the low-pressure gas pipe maintenance valve to complete the main refrigeration operation cycle.

[0036] When the main heating operation instruction of the HR function is received, the electric ball valve is opened: the high-temperature and high-pressure gas refrigerant flows into the indoor unit through the high-pressure gas pipe maintenance valve, most of which is used for heating and a small part of which is used for refrigeration; the refrigerant after refrigeration directly enters the compressor from the low-pressure gas pipe maintenance valve; the high-temperature and high-pressure liquid refrigerant after main heating flows back to the compressor through the outdoor condenser and the four-way valve to complete the main heating operation cycle.

[0037] As can be seen from the above technical solutions, the air conditioner and the algorithm thereof provided by the application can automatically adjust the HP and HR modes, an electric ball valve is additionally added to the hardware, and a corresponding control algorithm is additionally added to the software, so that the ECO HR product has both the HP and HR functions, and the mode of HP or HR is adapted according to the requirements of the user; meanwhile, the operation models are reduced, and the management cost is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0039] Figure 1 The cycle diagram of the air conditioner provided by the embodiments of the application which can automatically adjust the HP and HR modes;

[0040] Figure 2 Refrigeration cycle diagram of the HP model product system provided by an embodiment of the present invention;

[0041] Figure 3a This is a refrigeration cycle diagram of the HR mode product provided in an embodiment of the present invention;

[0042] Figure 3b This is a heating operation cycle diagram of the HR mode product provided in an embodiment of the present invention;

[0043] Figure 3c This is a main refrigeration operation cycle diagram of the HR mode product provided in an embodiment of the present invention;

[0044] Figure 3d This is the main heating operation cycle diagram of the HR mode product provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] An air conditioner capable of automatically adjusting HP and HR modes provided in an embodiment of the present invention includes: an outdoor unit;

[0047] The outdoor unit includes: a compressor INV, a condenser OHX, a four-way valve V_4W and a throttling device E_M;

[0048] The air outlet of the compressor INV is connected to the first port of the four-way valve V_4W; its structure can be referred to Figure 1 As shown, the bottom of the four-way valve V_4W is its first port, and the top of the valve from left to right is its second port, third port and fourth port respectively;

[0049] The second port of the four-way valve V_4W is connected to the high-pressure air pipe maintenance valve SV_HG through the first pipeline (main function: MCU high-pressure air pipe connection); the first pipeline is provided with an electric ball valve HP_V;

[0050] The third port of the four-way valve V_4W is connected to the air inlet of the compressor INV and the low-pressure air pipe maintenance valve SV_LG (main function: MCU low-pressure air pipe connection);

[0051] The fourth port of the four-way valve V_4W is connected to the first port of the condenser OHX, and the second port of the condenser OHX is connected to the liquid pipe maintenance valve SV_L (main function: MCU liquid pipe connection); the fourth port of the four-way valve V_4W is also connected to the high-pressure gas pipe maintenance valve SV_HG through the second pipeline; the second pipeline is equipped with a main refrigeration one-way valve CV_MC and a main refrigeration solenoid valve V_MC in series (main function: supplying refrigerant to the high-pressure pipe refrigerant during the main engine refrigeration operation).

[0052] As can be seen from the above technical solution, the air conditioner provided by the embodiment of the present invention, which can automatically adjust the HP and HR modes, has three service valves: the high-pressure gas pipe service valve SV_HG, the low-pressure gas pipe service valve SV_LG, and the liquid pipe service valve SV_L. In addition, a main cooling check valve CV_MC, a main cooling solenoid valve V_MC, and an electric ball valve HP_V are provided. Thus, the air conditioner can realize four functions: cooling, heating, main cooling, and main heating. This product is powerful and applicable to a wider range of occasions, while also being more energy-efficient.

[0053] This solution installs an electric ball valve HP_V at the second port of the four-way valve V_4W to replace the one-way valve CV_H in the existing HR structure. It can conduct in both directions and switch between HP and HR modes, so that the product has both HP and HR functions, achieving the goal of adaptively adapting to HP or HR mode according to user requirements; at the same time, it also reduces the number of operating models and greatly reduces management costs.

[0054] like Figure 2 As shown, when the user's demand is the HP function, the high-pressure gas pipe maintenance valve SV_HG and the liquid pipe maintenance valve SV_L are connected to the indoor unit respectively;

[0055] During cooling, the high-pressure, high-temperature gas refrigerant passes through the fourth port of the four-way valve V_4W and condenses in the outdoor condenser OHX. The high-temperature, high-pressure liquid refrigerant then passes through the throttling device E_M to be intercepted and reduced in pressure. It then passes through the liquid pipe service valve SV_L to the indoor unit for cooling. Finally, the low-pressure, low-temperature gas refrigerant passes through the high-pressure gas pipe service valve SV_HG and the second and third ports of the four-way valve V_4W, returning to the compressor INV to complete the refrigeration cycle.

[0056] During heating, the high-temperature, high-pressure gas refrigerant flows into the indoor unit through the reversed four-way valve V_4W and the high-pressure gas pipe maintenance valve SV_HG for heating. Then, the high-temperature, high-pressure liquid refrigerant is intercepted and reduced in pressure by the throttling device E_M to the outdoor condenser OHX, becoming a low-temperature, low-pressure gas and flowing back to the compressor INV to complete the heating cycle.

[0057] When the user requires the HR function, connect the high-pressure gas pipe maintenance valve SV_HG, the low-pressure gas pipe maintenance valve SV_LG, and the liquid pipe maintenance valve SV_L to the indoor unit respectively;

[0058] During cooling operation, if Figure 3a As shown, the high-pressure, high-temperature gas refrigerant (the upper path of the outdoor unit in the figure) passes through the four-way valve V_4W to condense in the outdoor condenser OHX. The high-temperature, high-pressure liquid refrigerant then passes through the throttling device E_M to be intercepted and reduced in pressure (latterly the lower path of the outdoor unit in the figure). It then passes through the liquid pipe service valve SV_L to the indoor unit for cooling. Finally, the low-pressure, low-temperature gas refrigerant (the middle path of the outdoor unit in the figure) passes through the low-pressure gas pipe service valve SV_LG and the four-way valve V_4W to return to the compressor INV, completing the refrigeration cycle.

[0059] During heating operation, if Figure 3b As shown, the electric ball valve HP_V is opened, and the high-temperature and high-pressure gas refrigerant (the uppermost route of the outdoor unit in the figure) is directly distributed to each indoor unit for heating through the high-pressure gas pipe maintenance valve SV_HG via the MCU, and then the low-pressure and low-temperature gas refrigerant (the middle route of the outdoor unit in the figure) enters the compressor INV directly from the MCU through the low-pressure gas pipe maintenance valve SV_LG, and the high-temperature and high-pressure liquid refrigerant (the lower route of the outdoor unit in the figure) flows back to the compressor INV through the liquid pipe maintenance valve SV_L, the throttling device E_M, the condenser OHX, and the four-way valve V_4W in sequence, completing the heating cycle.

[0060] When the main cooling is running, Figure 3c As shown:

[0061] Most of the high-pressure, high-temperature gas refrigerant (the second line from the top of the outdoor unit in the diagram) passes through the four-way valve V_4W to condense in the outdoor condenser OHX. The high-temperature, high-pressure liquid refrigerant then passes through the throttling device E_M to be intercepted and reduced in pressure (the latter is the lower line of the outdoor unit in the diagram) and flows through the liquid line service valve SV_L to the indoor units for cooling (the first, second, third, and fifth lines from the top of the indoor units in the diagram).

[0062] A small amount of high-pressure, high-temperature gas refrigerant (the topmost line of the outdoor unit in the figure) flows through the high-pressure gas pipe maintenance valve SV_HG into the indoor unit for heating (the fourth and sixth lines from the top of the indoor unit in the figure);

[0063] The low-temperature, low-pressure refrigerant after heating passes through the MCU and merges with the low-temperature, low-pressure refrigerant after main cooling (the middle path of the outdoor unit in the figure) and flows back to the compressor INV from the low-pressure gas pipe maintenance valve SV_LG to complete the main cooling operation cycle.

[0064] When the main heating is running, the electric ball valve HP_V opens. Figure 3d As shown:

[0065] High pressure and high temperature gas refrigerant (the uppermost path of the outdoor unit in the figure) flows into the indoor unit through the high pressure gas pipe service valve SV_HG, most of which performs heating (the first, second, third and fifth from the top of the indoor unit in the figure), and a small part performs refrigeration (the fourth and sixth from the top of the indoor unit in the figure);

[0066] The low temperature and low pressure refrigerant after refrigeration (the middle path of the outdoor unit in the figure) directly enters the compressor INV from the low pressure gas pipe service valve SV_LG; the high temperature and high pressure liquid refrigerant after main heating (the lower path of the outdoor unit in the figure) passes through the outdoor side condenser OHX, and then flows back to the compressor INV through the four-way valve V_4W to complete the main heating operation cycle.

[0067] In order to further optimize the above technical scheme, the first pipe and the second pipe are connected to the high pressure gas pipe service valve SV_HG after being connected in parallel at the first node;

[0068] The fourth port of the four-way valve V_4W is also connected to the low pressure gas pipe service valve SV_LG through the second pipe;

[0069] A third pipe is further connected between the first node and the low pressure gas pipe service valve SV_LG, and the third pipe is provided with a second hot gas bypass valve V_HG2, which mainly functions to maintain pressure balance when stopped.

[0070] The embodiment of the application further provides an air conditioning algorithm capable of automatically adjusting the HP and HR modes, and the air conditioner capable of automatically adjusting the HP and HR modes is used, when a control instruction of the HP function is received, the MCU is not required at this time, the feedback signal of the MCU is no, the high pressure gas pipe service valve SV_HG and the liquid pipe service valve SV_L are connected with the indoor unit respectively, and the electric ball valve HP_V is opened, so that the HP function is realized.

[0071] When a control instruction of the HR function is received, the MCU is connected at this time, the feedback signal of the MCU is yes, the high pressure gas pipe service valve SV_HG, the low pressure gas pipe service valve SV_LG and the liquid pipe service valve SV_L are connected with the indoor unit respectively.

[0072] The details and advantages of the algorithm can be referred to the foregoing description, and will not be described here.

[0073] The present scheme will be further described below in combination with specific embodiments:

[0074] Figure 2This is the refrigeration cycle diagram of the HP mode product system of the present invention, which connects the high-pressure gas pipe maintenance valve SV_HG and the liquid pipe maintenance valve SV_L, opens the electric ball valve HP_V, and realizes the conversion between cooling and heating through the four-way valve. During cooling, the four-way valve is as shown in the figure. The high-pressure and high-temperature gas refrigerant flows into the outdoor unit through the four-way valve, condenses on the outdoor side, and then is intercepted and reduced in pressure by the EEV to the indoor unit for cooling. Finally, the low-pressure and low-temperature refrigerant flows back to the compressor through the four-way valve to complete the refrigeration cycle. During heating, the four-way valve is reversed, and the high-temperature and high-pressure gas refrigerant flows into the indoor unit through the reversed four-way valve for heating. It is then intercepted and reduced in pressure by the EEV to the outdoor side and becomes a low-temperature and low-pressure gas that flows back to the compressor to complete the heating cycle.

[0075] Figure 3a This is the HR mode operating state 1: Flowchart cooling operation. The refrigerant is pumped out of the compressor, cooled by the condenser, and then enters each indoor unit for cooling operation before returning to the compressor to complete the cycle.

[0076] Figure 3b This is the second flow chart of the HR mode operating state: Heating operation. After the refrigerant is pumped out of the compressor and distributed to each indoor unit through the MCU for heating, some of it flows directly from the MCU into the compressor. The main circuit flows through the outdoor side and returns to the compressor through the four-way valve, completing the heating cycle.

[0077] Figure 3c This is a flow chart of the HR mode operating state: Main cooling operation. Refrigerant is pumped from the compressor through the main circuit for cooling operation. A small amount is also pumped into the indoor unit for heating. The heated refrigerant passes through the MCU and merges with the main cooling refrigerant before flowing back to the compressor through the central service valve to complete the main cooling cycle.

[0078] Figure 3d This is the fourth flow chart of the HR mode operating state: primary heating operation. Refrigerant is pumped from the compressor through the main circuit for heating operation, and a small amount is also pumped into the indoor unit for cooling. The cooled refrigerant enters the compressor directly through the central service valve. The main circuit refrigerant passes through the outdoor condenser and then flows back to the compressor through the four-way valve to complete the primary heating cycle.

[0079] This patent describes the application of this algorithm in DVM HR products. Other outdoor units with similar functions can also use this logic.

[0080] This patent introduces an automatic regulation algorithm for heat pump heat recovery of air source heat energy, which is also applicable to water and other heat sources.

[0081] In summary, the system circulation diagram of this patent adds an electric ball valve to the circulation diagram of DVM HR and eliminates the one-way valve of HR.

[0082] When the customer requires the HP function, the MCU is not needed and the MCU's feedback signal is negative. The HP function is selected in the program, and the high-pressure gas and liquid service valves are connected on-site. The electric ball valve is opened. This enables the HP function.

[0083] If the customer requires the HR function, the MCU is connected and the MCU feedback signal is active. The HR function is selected in the program, and the high-pressure gas pipe service valve, low-pressure gas pipe service valve, and liquid pipe service valve are connected on-site. Cooling operation follows the same logic as HR cooling operation. Heating operation follows the same logic as HR heating operation. Main cooling operation follows the same logic as HR main cooling operation. Main heating operation follows the same logic as HR main heating operation.

[0084] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0085] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air conditioner capable of automatically adjusting HP and HR modes, characterized in that: include: Outdoor unit; The outdoor unit includes: a compressor (INV), an outdoor condenser (OHX), a four-way valve (V_4W) and a throttling device (E_M); The air outlet of the compressor (INV) is connected to the first port of the four-way valve (V_4W); The second port of the four-way valve (V_4W) is connected to the high-pressure gas pipe maintenance valve (SV_HG) through a first pipeline; the first pipeline is provided with an electric ball valve (HP_V), which is bidirectional and reversible; The third port of the four-way valve (V_4W) is connected to the air inlet of the compressor (INV) and the low-pressure air pipe maintenance valve (SV_LG); The fourth port of the four-way valve (V_4W) is connected to the first port of the condenser (OHX), and the second port of the condenser (OHX) is connected to the liquid pipe maintenance valve (SV_L); the fourth port of the four-way valve (V_4W) is also connected to the high-pressure gas pipe maintenance valve (SV_HG) through a second pipeline; the second pipeline is provided with a main cooling check valve (CV_MC) and a main cooling solenoid valve (V_MC) in series.

2. The air conditioner capable of automatically adjusting HP and HR modes according to claim 1, characterized in that: When the user's demand is the HP function, the high-pressure gas pipe maintenance valve (SV_HG) and the liquid pipe maintenance valve (SV_L) are connected to the indoor unit respectively; During cooling, the high-pressure, high-temperature gas refrigerant passes through the four-way valve (V_4W) to condense in the outdoor condenser (OHX). The high-temperature, high-pressure liquid refrigerant then passes through the throttling device (E_M) to be intercepted and reduced in pressure, and then passes through the liquid pipe maintenance valve (SV_L) to the indoor unit for cooling. Finally, the low-pressure, low-temperature gas refrigerant passes through the high-pressure gas pipe maintenance valve (SV_HG) and the four-way valve (V_4W) to flow back to the compressor (INV), completing the refrigeration cycle. During heating, the high-temperature, high-pressure gas refrigerant flows through the reversed four-way valve (V_4W) and the high-pressure gas pipe maintenance valve (SV_HG) into the indoor unit for heating. The high-temperature, high-pressure liquid refrigerant then flows through the throttling device (E_M) for interception and pressure reduction before flowing to the outdoor condenser (OHX) as a low-temperature, low-pressure gas and flowing back to the compressor (INV) to complete the heating cycle.

3. The air conditioner capable of automatically adjusting HP and HR modes according to claim 1, characterized in that: When the user's demand is the HR function, the high-pressure gas pipe maintenance valve (SV_HG), the low-pressure gas pipe maintenance valve (SV_LG) and the liquid pipe maintenance valve (SV_L) are connected to the indoor unit respectively; During cooling operation, the high-pressure, high-temperature gas refrigerant passes through the four-way valve (V_4W) to condense in the outdoor condenser (OHX). The high-temperature, high-pressure liquid refrigerant then passes through the throttling device (E_M) to be intercepted and reduced in pressure, and then passes through the liquid pipe maintenance valve (SV_L) to the indoor unit for cooling. Finally, the low-pressure, low-temperature gas refrigerant passes through the low-pressure gas pipe maintenance valve (SV_LG) and the four-way valve (V_4W) to flow back to the compressor (INV), completing the refrigeration cycle. During heating operation, the electric ball valve (HP_V) opens, and the high-temperature, high-pressure gas refrigerant flows directly through the high-pressure gas pipe maintenance valve (SV_HG) and is distributed to each indoor unit via the MCU for heating. Then, the low-pressure, low-temperature gas refrigerant flows directly from the MCU via the low-pressure gas pipe maintenance valve (SV_LG) into the compressor (INV). The high-temperature, high-pressure liquid refrigerant flows sequentially through the liquid pipe maintenance valve (SV_L), the throttling device (E_M), the condenser (OHX), and the four-way valve (V_4W) and returns to the compressor (INV), completing the heating cycle.

4. The air conditioner capable of automatically adjusting HP and HR modes according to claim 3, characterized in that: During main cooling operation: Most of the high-pressure, high-temperature gas refrigerant passes through the four-way valve (V_4W) to condense in the outdoor condenser (OHX). Then, the high-temperature, high-pressure liquid refrigerant passes through the throttling device (E_M) to be intercepted and reduced in pressure, and then passes through the liquid pipe maintenance valve (SV_L) to the indoor unit for cooling. A small amount of high-pressure and high-temperature gas refrigerant flows into the indoor unit through the high-pressure gas pipe maintenance valve (SV_HG) to perform heating; The low-temperature, low-pressure refrigerant after heating passes through the MCU and merges with the low-temperature, low-pressure refrigerant after main cooling, and flows back to the compressor (INV) from the low-pressure gas pipe maintenance valve (SV_LG) to complete the main cooling operation cycle.

5. The air conditioner capable of automatically adjusting HP and HR modes according to claim 3, characterized in that: When the main heating mode is in operation, the electric ball valve (HP_V) opens: High-pressure, high-temperature gas refrigerant flows into the indoor unit through the high-pressure gas pipe maintenance valve (SV_HG), with most of it used for heating and a small part used for cooling; The low-temperature, low-pressure refrigerant after refrigeration flows directly into the compressor (INV) from the low-pressure gas pipe maintenance valve (SV_LG). The high-temperature, high-pressure liquid refrigerant after main heating passes through the outdoor condenser (OHX) and then flows back to the compressor (INV) through the four-way valve (V_4W) to complete the main heating operation cycle.

6. The air conditioner capable of automatically adjusting HP and HR modes according to any one of claims 1 to 5, characterized in that: The first pipeline and the second pipeline are connected in parallel at a first node and then connected to the high-pressure gas pipe maintenance valve (SV_HG); The fourth port of the four-way valve (V_4W) is also connected to the low-pressure air pipe maintenance valve (SV_LG) through a second pipeline; A third pipeline is further connected between the first node and the low-pressure gas pipe maintenance valve (SV_LG), and the third pipeline is provided with a second hot gas bypass valve (V_HG2).

7. An air conditioning algorithm capable of automatically adjusting HP and HR modes, using the air conditioning algorithm capable of automatically adjusting HP and HR modes according to any one of claims 1 to 6, characterized in that: When receiving the control command of the HP function, the feedback signal of the MCU is no, the high-pressure gas pipe maintenance valve (SV_HG) and the liquid pipe maintenance valve (SV_L) are connected to the indoor unit respectively, and the electric ball valve (HP_V) is opened; When receiving the control instruction of the HR function, the feedback signal of the MCU is yes, and the high-pressure gas pipe maintenance valve (SV_HG), the low-pressure gas pipe maintenance valve (SV_LG) and the liquid pipe maintenance valve (SV_L) are connected to the indoor unit respectively.

8. The air conditioning algorithm capable of automatically adjusting HP and HR modes according to claim 7, characterized in that: When receiving the cooling command of the HP function, The high-pressure, high-temperature gas refrigerant passes through the four-way valve (V_4W) to condense in the outdoor condenser (OHX). The high-temperature, high-pressure liquid refrigerant then passes through the throttling device (E_M) to be intercepted and reduced in pressure. It then passes through the liquid pipe service valve (SV_L) to the indoor unit for cooling. Finally, the low-pressure, low-temperature gas refrigerant passes through the high-pressure gas pipe service valve (SV_HG) and the four-way valve (V_4W) to flow back to the compressor (INV), completing the refrigeration cycle. When the HP function heating command is received, the high-temperature, high-pressure gas refrigerant flows into the indoor unit through the reversed four-way valve (V_4W) and the high-pressure gas pipe maintenance valve (SV_HG) to perform heating. Then, the high-temperature, high-pressure liquid refrigerant is intercepted and reduced in pressure by the throttling device (E_M) to the outdoor condenser (OHX), where it becomes low-temperature, low-pressure gas and flows back to the compressor (INV) to complete the heating cycle.

9. The air conditioning algorithm capable of automatically adjusting HP and HR modes according to claim 7, characterized in that: When the HR function receives a cooling operation command, the high-pressure and high-temperature gas refrigerant passes through the four-way valve (V_4W) to condense in the outdoor condenser (OHX). The high-temperature and high-pressure liquid refrigerant then passes through the throttling device (E_M) to be intercepted and reduced in pressure, and then passes through the liquid pipe maintenance valve (SV_L) to the indoor unit for cooling. Finally, the low-pressure and low-temperature gas refrigerant passes through the low-pressure gas pipe maintenance valve (SV_LG) and the four-way valve (V_4W) to flow back to the compressor (INV), completing the refrigeration cycle. When a heating operation command from the HR function is received, the electric ball valve (HP_V) opens, and the high-temperature, high-pressure gas refrigerant passes directly through the high-pressure gas pipe maintenance valve (SV_HG) and is distributed to each indoor unit via the MCU for heating. Then, the low-pressure, low-temperature gas refrigerant flows directly from the MCU via the low-pressure gas pipe maintenance valve (SV_LG) into the compressor (INV). The high-temperature, high-pressure liquid refrigerant flows sequentially through the liquid pipe maintenance valve (SV_L), the throttling device (E_M), the condenser (OHX), and the four-way valve (V_4W) and returns to the compressor (INV), completing the heating cycle.

10. The air conditioning algorithm capable of automatically adjusting HP and HR modes according to claim 7, characterized in that: When the main cooling operation command of the HR function is received, most of the high-pressure and high-temperature gas refrigerant is condensed in the outdoor condenser (OHX) through the four-way valve (V_4W). Then, the high-temperature and high-pressure liquid refrigerant is intercepted and reduced in pressure by the throttling device (E_M) and flows through the liquid pipe maintenance valve (SV_L) to the indoor unit for cooling. A small portion of the high-pressure and high-temperature gas refrigerant flows through the high-pressure gas pipe maintenance valve (SV_HG) into the indoor unit for heating. The low-temperature and low-pressure refrigerant after heating passes through the MCU and merges with the low-temperature and low-pressure refrigerant after the main cooling. From the low-pressure gas pipe maintenance valve (SV_LG), it flows back to the compressor (INV) to complete the main cooling operation cycle. When the main heating operation command of the HR function is received, the electric ball valve (HP_V) opens: high-pressure and high-temperature gas refrigerant flows into the indoor unit through the high-pressure gas pipe maintenance valve (SV_HG), most of which is used for heating and a small part is used for cooling; the low-temperature and low-pressure refrigerant after cooling directly enters the compressor (INV) through the low-pressure gas pipe maintenance valve (SV_LG); the high-temperature and high-pressure liquid refrigerant after main heating passes through the outdoor condenser (OHX) and then flows back to the compressor (INV) through the four-way valve (V_4W), completing the main heating operation cycle.

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