Air conditioning system and control method thereof

Abstract

The application relates to the air conditioning technical field, and particularly provides an air conditioning system and a control method thereof, and aims to solve the problem of how to ensure the heating effect of the air conditioner under the condition of air conditioner frequency reduction operation. For the purpose, the air conditioning system is provided with a phase change material, and a heat storage channel and a heat exchange channel which are not communicated with each other in a heat storage device, the heat storage channel and the heat exchange device form a heat storage loop, so that the first refrigerant in the heat exchange device can exchange heat with the first refrigerant in the heat storage channel, and then the heat generated by the driving mechanism can be stored in the phase change material. The two ends of the heat exchange channel are arranged on the inlet side of the evaporator, thereby forming a heat exchange branch, so that the second refrigerant enters the heat exchange branch before entering the evaporator, the second refrigerant in the heat exchange branch can absorb the heat released by the phase change material, the temperature of the second refrigerant is increased, thereby the evaporation temperature of the evaporator is increased, so that the air conditioner can still ensure the heating effect under the condition of frequency reduction operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioners, and specifically provides an air conditioning system and a control method thereof. BACKGROUND

[0002] When an air conditioner operates in a heating mode, the air conditioner will operate at a reduced frequency when the indoor temperature approaches the set temperature, so as to achieve the purpose of reducing consumption and saving energy. However, after the air conditioner operates at a reduced frequency, the heating effect of the air conditioner is reduced, which reduces the outlet air temperature of the indoor unit and affects the user experience.

[0003] Therefore, there is a need in the art for a new technical solution to solve the above problems. SUMMARY

[0004] In order to solve at least one problem in the prior art, i.e., to solve the problem of how to ensure the heating effect of the air conditioner when the air conditioner operates at a reduced frequency, the present application provides an air conditioning system, which comprises an evaporator, a driving mechanism, a heat exchange device, a heat storage device and a first valve body;

[0005] The heat exchange device is arranged on the driving mechanism;

[0006] The heat storage device comprises a device body, a phase change material arranged in the device body, and a heat storage channel and a heat exchange channel which are not in communication with each other, the heat storage channel and the heat exchange device form a heat storage loop, and a second valve body is arranged on the heat storage loop, so that when the second valve body is in an open state, the first refrigerant in the heat exchange device can exchange heat with the first refrigerant in the heat storage channel, and heat is stored in the phase change material;

[0007] Both ends of the heat exchange channel are arranged on the inlet side of the evaporator to form a heat exchange branch;

[0008] The first valve body is arranged to change the flow path of the second refrigerant flowing into the evaporator, so that when the second refrigerant flows into the heat exchange branch, the heat stored in the phase change material can exchange heat with the second refrigerant in the heat exchange channel.

[0009] In the preferred technical solution of the above air conditioning system, the outer sides of the heat storage channel and the heat exchange channel are filled with the phase change material.

[0010] In the preferred technical solution of the above air conditioning system, the heat storage channel and the heat exchange channel have a double helix structure.

[0011] In the preferred technical solution of the above air conditioning system, the outer side of the device body is wrapped with a heat preservation material; and / or

[0012] The inner side of the device body is provided with a heat-conducting material.

[0013] In the preferred technical scheme of the air conditioning system, the heat exchange device comprises heat exchange pipes arranged on the outer wall of the driving mechanism, a first end of the heat exchange pipes is communicated with a first end of the heat storage channel, and a second end of the heat exchange pipes is communicated with a second end of the heat storage channel.

[0014] In the preferred technical scheme of the air conditioning system, the heat exchange pipes are wound on the outer wall of the driving mechanism.

[0015] In the preferred technical scheme of the air conditioning system, the first valve body is arranged on the inlet side of the evaporator, the inlet side of the first valve body is communicated with the first end of the heat exchange branch, and the outlet side is communicated with the second end of the heat exchange branch; and / or

[0016] The first valve body is arranged on the heat exchange branch.

[0017] In the preferred technical scheme of the air conditioning system, the air conditioning system further comprises a compressor, a throttling device and a condenser, and the compressor, the evaporator, the throttling device and the condenser are sequentially connected to form a refrigerant circuit.

[0018] In the preferred technical scheme of the air conditioning system, the first valve body is a first electromagnetic valve or a first electric valve; and / or

[0019] The second valve body is a second electromagnetic valve or a second electric valve; and / or

[0020] The driving mechanism is an electric motor.

[0021] The application also provides a control method of an air conditioning system, the air conditioning system being the air conditioning system of any of the preferred technical schemes, and the control method comprises the following steps:

[0022] When the air conditioner is running, the evaporator coil temperature Tm is obtained;

[0023] The evaporator coil temperature Tm and a first preset temperature T1 are compared;

[0024] According to the comparison result, the second valve body and the first valve body are selectively controlled to be opened.

[0025] In the preferred technical scheme of the control method of the air conditioning system, when the first valve body is arranged on the inlet side of the evaporator, the step of "selectively controlling the second valve body and the first valve body to be opened according to the comparison result" specifically comprises the following steps:

[0026] When Tm≤T1, the first valve body is controlled to be closed, and the second valve body is controlled to be opened;

[0027] When Tm>T1, compare the evaporator coil temperature T with a second preset temperature T2;

[0028] When T1

[0029] When Tm>T2, control the first valve body to open and the second valve body to close.

[0030] In the preferred technical scheme of the control method of the air conditioning system, after the step of "when Tm≤T1, control the second valve body to open and the first valve body to close", further comprising:

[0031] Continue to acquire the evaporator coil temperature Tm;

[0032] Compare the evaporator coil temperature Tm with a second preset temperature T2;

[0033] When Tm>T2, acquire the duration tc that Tm>T2;

[0034] Compare the duration tc with a preset time t1,

[0035] When tc≥t1, control the first valve body to open and the second valve body to keep the original operating state.

[0036] In the preferred technical scheme of the control method of the air conditioning system, when the first valve body is arranged on the heat exchange branch, the step of "selectively control the second valve body and the first valve body to open according to the comparison result" specifically comprises:

[0037] When Tm≤T1, control the second valve body and the first valve body to open;

[0038] When Tm>T1, compare the evaporator coil temperature T with a second preset temperature T2;

[0039] When T1

[0040] When Tm>T2, control the first valve body and the second valve body to close.

[0041] In the preferred technical scheme of the control method of the air conditioning system, after the step of "when Tm≤T1, control the second valve body and the first valve body to open", further comprising:

[0042] Continue to acquire the evaporator coil temperature Tm;

[0043] Compare the evaporator coil temperature Tm with a second preset temperature T2;

[0044] acquiring a duration tc when Tm>T2;

[0045] comparing the duration tc with a preset time t1,

[0046] when tc≥t1, controlling the first valve body to be closed while controlling the second valve body to remain in the original operating state.

[0047] In the preferred technical scheme of the control method of the air conditioning system, when the first valve body is arranged at the inlet side of the evaporator and the heat exchange branch respectively, the step of "selectively controlling the second valve body and the first valve body to be opened according to the comparison result" specifically comprises:

[0048] when Tm≤T1, controlling the first valve body at the inlet side of the evaporator to be closed while controlling the second valve body and the first valve body at the heat exchange branch to be opened;

[0049] when Tm>T1, comparing the evaporator coil temperature T with a second preset temperature T2;

[0050] when T1

[0051] when Tm>T2, controlling the first valve body at the inlet side of the evaporator to be opened while the second valve body and the first valve body at the heat exchange branch are closed.

[0052] In the preferred technical scheme of the control method of the air conditioning system, after the step of "when Tm≤T1, controlling the first valve body at the inlet side of the evaporator to be closed while controlling the second valve body and the first valve body at the heat exchange branch to be opened", the method further comprises:

[0053] continuing to acquire the evaporator coil temperature Tm;

[0054] comparing the evaporator coil temperature Tm with a second preset temperature T2;

[0055] acquiring a duration tc when Tm>T2;

[0056] comparing the duration tc with a preset time t1,

[0057] when tc≥t1, controlling the first valve body at the inlet side of the evaporator to be opened while the second valve body and the first valve body at the heat exchange branch are closed.

[0058] Option 1. An air conditioning system, characterized in that the air conditioning system includes an evaporator, a drive mechanism, a heat exchange device, a heat storage device, and a first valve body;

[0059] The heat exchange device is mounted on the drive mechanism;

[0060] The heat storage device includes a device body, in which a phase change material and a heat storage channel and a heat exchange channel that are not connected to each other are disposed. The heat storage channel and the heat exchange device form a heat storage circuit. A second valve body is disposed on the heat storage circuit so that when the second valve body is in the open state, the first refrigerant in the heat exchange device can exchange heat with the first refrigerant in the heat storage channel, so that heat is stored in the phase change material.

[0061] Both ends of the heat exchange channel are located on the inlet side of the evaporator to form a heat exchange branch;

[0062] The first valve body is configured to change the flow path of the second refrigerant flowing into the evaporator, so that when the second refrigerant flows into the heat exchange branch, the heat stored in the phase change material can exchange heat with the second refrigerant in the heat exchange channel.

[0063] Option 2. The air conditioning system according to Option 1, characterized in that the outer sides of both the heat storage channel and the heat exchange channel are filled with the phase change material.

[0064] Option 3. The air conditioning system according to Option 2, characterized in that the heat storage channel and the heat exchange channel have a double helix structure.

[0065] Option 4. The air conditioning system according to Option 1, characterized in that the outer side of the device body is wrapped with thermal insulation material; and / or

[0066] The inner side of the device body is provided with a heat-conducting material.

[0067] Option 5. The air conditioning system according to Option 1, characterized in that the heat exchange device includes a heat exchange tube disposed on the outer wall of the drive mechanism, the first end of the heat exchange tube being connected to the first end of the heat storage channel, and the second end of the heat exchange tube being connected to the second end of the heat storage channel.

[0068] Option 6. The air conditioning system according to Option 5, characterized in that the heat exchange tube is wound around the outer wall of the drive mechanism.

[0069] Solution 7. The air conditioning system according to Solution 1, characterized in that the first valve body is disposed on the inlet side of the evaporator, the inlet side of the first valve body is connected to the first end of the heat exchange branch, and the outlet side is connected to the second end of the heat exchange branch; and / or

[0070] The first valve body is arranged on the heat exchange branch.

[0071] Scheme 8. The air conditioning system according to scheme 1, further comprising a compressor, a throttling device and a condenser, wherein the compressor, the evaporator, the throttling device and the condenser are connected in sequence to form a refrigerant circuit.

[0072] Scheme 9. The air conditioning system according to scheme 1, wherein the first valve body is a first electromagnetic valve or a first electric valve; and / or

[0073] the second valve body is a second electromagnetic valve or a second electric valve; and / or

[0074] the driving mechanism is an electric motor.

[0075] Scheme 10. A control method of an air conditioning system, wherein the air conditioning system is any one of the air conditioning systems according to schemes 1-9, and the control method comprises:

[0076] acquiring an evaporator coil temperature Tm when the air conditioner is running;

[0077] comparing the evaporator coil temperature Tm with a first preset temperature T1;

[0078] selectively controlling the second valve body and the first valve body to be opened or closed according to the comparison result.

[0079] Scheme 11. The control method according to scheme 10, wherein when the first valve body is arranged on the inlet side of the evaporator, the step of “selectively controlling the second valve body and the first valve body to be opened or closed according to the comparison result” specifically comprises:

[0080] when Tm≤T1, controlling the first valve body to be closed and the second valve body to be opened;

[0081] when Tm>T1, comparing the evaporator coil temperature Tm with a second preset temperature T2;

[0082] when T1

[0083] when Tm>T2, controlling the first valve body to be opened and the second valve body to be closed.

[0084] Scheme 12. The control method according to scheme 11, further comprising, after the step of “when Tm≤T1, controlling the first valve body to be closed and the second valve body to be opened”:

[0085] continuously acquiring the evaporator coil temperature Tm;

[0086] comparing the evaporator coil temperature Tm with a second preset temperature T2;

[0087] when Tm>T2, acquiring a duration tc of Tm>T2;

[0088] comparing the duration tc with a preset time t1,

[0089] when tc≥t1, controlling the first valve body to open while controlling the second valve body to keep the original operation state.

[0090] Scheme 13. The control method according to Scheme 10, characterized in that when the first valve body is arranged on the heat exchange branch, the step of "selectively controlling the second valve body and the first valve body to open or close according to the comparison result" specifically comprises:

[0091] when Tm≤T1, controlling the second valve body and the first valve body to open;

[0092] when Tm>T1, comparing the evaporator coil temperature Tm with a second preset temperature T2;

[0093] when T1

[0094] when Tm>T2, controlling the first valve body and the second valve body to close.

[0095] Scheme 14. The control method according to Scheme 13, characterized in that after the step of "when Tm≤T1, controlling the second valve body and the first valve body to open", further comprising:

[0096] continuously acquiring the evaporator coil temperature Tm;

[0097] comparing the evaporator coil temperature Tm with a second preset temperature T2;

[0098] when Tm>T2, acquiring a duration tc of Tm>T2;

[0099] comparing the duration tc with a preset time t1,

[0100] when tc≥t1, controlling the first valve body to close while controlling the second valve body to keep the original operation state.

[0101] Scheme 15. The control method according to scheme 10, characterized in that when the first valve body is arranged at the inlet side of the evaporator and the heat exchange branch respectively, the step of "selectively controlling the second valve body and the first valve body to open or close according to the comparison result" specifically comprises:

[0102] when Tm≤T1, controlling the first valve body at the inlet side of the evaporator to close, while controlling the second valve body and the first valve body at the heat exchange branch to open;

[0103] when Tm>T1, comparing the size of the evaporator coil temperature T and the second preset temperature T2;

[0104] when T1

[0105] when Tm>T2, controlling the first valve body at the inlet side of the evaporator to open, while the second valve body and the first valve body at the heat exchange branch to close.

[0106] Scheme 16. The control method according to scheme 15, characterized in that after the step of "when Tm≤T1, controlling the first valve body at the inlet side of the evaporator to close, while controlling the second valve body and the first valve body at the heat exchange branch to open", further comprising:

[0107] continuously acquiring the evaporator coil temperature Tm;

[0108] comparing the size of the evaporator coil temperature Tm and the second preset temperature T2;

[0109] when Tm>T2, acquiring the duration tc of Tm>T2;

[0110] comparing the duration tc and the preset time t1,

[0111] when tc≥t1, controlling the first valve body at the inlet side of the evaporator to open, while the second valve body and the first valve body at the heat exchange branch to close.

[0112] The skilled in the art can understand that the air conditioning system of the application comprises an evaporator, a driving mechanism, a heat exchange device and a heat storage device, wherein the heat exchange device is arranged on the driving mechanism, the heat storage device is provided with a phase change material, a heat storage channel and a heat exchange channel which are not communicated with each other, the heat storage channel forms a heat storage loop with the heat exchange device, so that the first refrigerant in the heat exchange device can exchange heat with the first refrigerant in the heat storage channel, and the heat generated by the driving mechanism can be stored in the phase change material. The two ends of the heat exchange channel are arranged on the inlet side of the evaporator, thereby forming a heat exchange branch, so that the second refrigerant enters the heat exchange branch before entering the evaporator, the second refrigerant in the heat exchange branch can absorb the heat released by the phase change material, increase the temperature of the second refrigerant, thereby increasing the evaporation temperature of the evaporator, and further increasing the outlet air temperature of the indoor unit, so that the air conditioner can still ensure the heating effect of the air conditioner under the condition of frequency reduction operation.

[0113] Further, by arranging the phase change material outside the heat storage channel and the heat exchange channel, the phase change material can absorb the heat in the heat storage channel, and also release heat to the second refrigerant in the heat exchange channel.

[0114] Further, by arranging the heat preservation material outside the device body, the heat preservation can be achieved, and the heat stored by the phase change material can be prevented from being lost.

[0115] Further, the heat exchange device comprises a heat exchange pipe arranged on the outer wall of the driving mechanism, which facilitates the heat exchange between the driving mechanism and the first refrigerant in the heat exchange pipe, increases the temperature of the first refrigerant in the heat exchange pipe, and also cools the driving mechanism.

[0116] The skilled in the art can understand that the control method of the air conditioning system of the application comprises: when the air conditioner is running, acquiring the evaporator coil temperature, comparing the evaporator coil temperature with the first preset temperature, and selectively controlling the second valve body and the first valve body to open or close according to the comparison result, so that the heat exchange device can store the heat generated by the driving mechanism in the phase change material, and the second refrigerant enters the heat exchange branch before entering the evaporator, the second refrigerant in the heat exchange branch can absorb the heat released by the phase change material, increase the temperature of the second refrigerant, thereby increase the evaporation temperature of the evaporator, and further increase the outlet air temperature of the indoor unit, so that the air conditioner can still ensure the heating effect of the air conditioner under the condition of frequency reduction operation.

[0117] Further, in the case that the inlet side of the evaporator is provided with the first valve body, in the case that the evaporator coil temperature is less than or equal to the first preset temperature, the first valve body is controlled to be closed, and the second valve body is controlled to be opened, so that the heat exchange device can store the heat generated by the driving mechanism in the phase change material, and the second refrigerant enters the heat exchange branch before entering the evaporator, and the second refrigerant in the heat exchange branch can absorb the heat released by the phase change material to increase the temperature of the second refrigerant, thereby increasing the evaporation temperature of the evaporator and the outlet air temperature of the indoor unit, so that the air conditioner can still ensure the heating effect of the air conditioner in the case of frequency reduction operation. In the case that the evaporator coil temperature is greater than the first preset temperature, the evaporator coil temperature is compared with the second preset temperature, and in the case that the evaporator coil temperature is greater than the first preset temperature and less than or equal to the second preset temperature, the first valve body and the second valve body are controlled to be opened, so that the heat exchange device can store the heat generated by the driving mechanism in the phase change material, and since the evaporator coil temperature is high, the second refrigerant no longer passes through the heat exchange branch, but directly enters the evaporator, so that the air conditioner can still ensure the heating effect of the air conditioner in the case of frequency reduction operation. When the evaporator coil temperature is greater than the second preset temperature, the evaporator temperature is high, the second valve body and the first valve body are controlled to be closed, and the air conditioner is normally operated and has good heating effect.

[0118] Further, in the case that the inlet side of the evaporator is provided with the first valve body, in the case that the evaporator coil temperature is less than or equal to the first preset temperature, the first valve body is controlled to be closed, and the second valve body is controlled to be opened, so that the heat exchange device can store the heat generated by the driving mechanism in the phase change material, and the second refrigerant enters the heat exchange branch before entering the evaporator, and the second refrigerant in the heat exchange branch can absorb the heat released by the phase change material to increase the temperature of the second refrigerant, thereby increasing the evaporation temperature of the evaporator and the outlet air temperature of the indoor unit, so that the air conditioner can still ensure the heating effect of the air conditioner in the case of frequency reduction operation. In the case that the evaporator coil temperature is greater than the first preset temperature, the evaporator coil temperature is compared with the second preset temperature, and in the case that the evaporator coil temperature is greater than the first preset temperature and less than or equal to the second preset temperature, the first valve body and the second valve body are controlled to be opened, so that the heat exchange device can store the heat generated by the driving mechanism in the phase change material, and since the evaporator coil temperature is high, the second refrigerant no longer passes through the heat exchange branch, but directly enters the evaporator, so that the air conditioner can still ensure the heating effect of the air conditioner in the case of frequency reduction operation. When the evaporator coil temperature is greater than the second preset temperature, the evaporator temperature is high, the second valve body and the first valve body are controlled to be closed, and the air conditioner is normally operated and has good heating effect.

[0119] Further, in the case that the first valve body is arranged on the heat exchange branch, in the case that the evaporator coil temperature is less than or equal to the first preset temperature, the second valve body is controlled to be opened together with the first valve body, so that the heat exchange device can store the heat generated by the driving mechanism in the phase change material, and the second refrigerant enters the heat exchange branch before entering the evaporator, and the second refrigerant in the heat exchange branch can absorb the heat released by the phase change material to increase the temperature of the second refrigerant, thereby increasing the evaporation temperature of the evaporator and the outlet air temperature of the indoor unit, so that the air conditioner can still ensure the heating effect of the air conditioner in the case of frequency reduction operation. In the case that the evaporator coil temperature is greater than the first preset temperature, the evaporator coil temperature is compared with the second preset temperature, and in the case that the evaporator coil temperature is greater than the first preset temperature and less than or equal to the second preset temperature, the first valve body is controlled to be closed and the second valve body is controlled to be opened, so that the heat exchange device can store the heat generated by the driving mechanism in the phase change material, and since the evaporator coil temperature is high, the second refrigerant no longer passes through the heat exchange branch but directly enters the evaporator, so that the air conditioner can still ensure the heating effect of the air conditioner in the case of frequency reduction operation. When the evaporator coil temperature is greater than the second preset temperature, the evaporator temperature is high, and the second valve body and the first valve body are controlled to be closed, and the air conditioner is normally operated and has good heating effect.

[0120] Further, after the first valve body is controlled to be closed and the second valve body is controlled to be opened in the case that the evaporator coil temperature is less than or equal to the first preset temperature, the evaporator coil temperature is continuously acquired, and the evaporator coil temperature is compared with the second preset temperature, and in the case that the evaporator coil temperature is greater than the second preset temperature, the duration that the evaporator coil temperature is greater than the second preset temperature is acquired, and in the case that the duration is greater than or equal to the preset time, the first valve body is controlled to be closed, and the second valve body is controlled to remain in the original operating state, so that the heat exchange device can store the heat generated by the driving mechanism in the phase change material, and since the evaporator coil temperature is high, the second refrigerant no longer passes through the heat exchange branch but directly enters the evaporator, so that the air conditioner can still ensure the heating effect of the air conditioner in the case of frequency reduction operation.

[0121] Further, when the evaporator coil temperature is less than or equal to the first preset temperature, the first valve body at the inlet side of the evaporator is controlled to be opened, and the second valve body and the first valve body on the heat exchange branch are controlled to be closed. Then, the evaporator coil temperature is continuously acquired, and a comparison is made between the evaporator coil temperature and the second preset temperature. When the evaporator coil temperature is greater than the second preset temperature, the duration for which the evaporator coil temperature is greater than the second preset temperature is acquired. When the duration is greater than or equal to a preset time, the first valve body is controlled to be closed, and the second valve body is controlled to remain in the original operating state. In this way, the heat exchange device can store the heat generated by the driving mechanism in the phase change material, and the second refrigerant no longer passes through the heat exchange branch but directly enters the evaporator due to the high evaporator coil temperature, so that the air conditioner can still guarantee the heating effect in the case of frequency reduction operation.

[0122] Further, when the evaporator coil temperature is less than or equal to the first preset temperature, the first valve body at the inlet side of the evaporator is controlled to be opened, and the second valve body and the first valve body on the heat exchange branch are controlled to be closed. Then, the evaporator coil temperature is continuously acquired, and a comparison is made between the evaporator coil temperature and the second preset temperature. When the evaporator coil temperature is greater than the second preset temperature, the duration for which the evaporator coil temperature is greater than the second preset temperature is acquired. When the duration is greater than or equal to a preset time, the first valve body is controlled to be closed, and the second valve body is controlled to remain in the original operating state. In this way, the heat exchange device can store the heat generated by the driving mechanism in the phase change material, and the second refrigerant no longer passes through the heat exchange branch but directly enters the evaporator due to the high evaporator coil temperature, so that the air conditioner can still guarantee the heating effect in the case of frequency reduction operation. BRIEF DESCRIPTION OF DRAWINGS

[0123] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0124] Figure 1 is a flowchart of the air conditioning system of the present application;

[0125] Figure 2 is a flowchart of the control method of the air conditioning system of the present application;

[0126] Figure 3 is a logic diagram of one possible implementation of the control method of the air conditioning system of the present application.

[0127] List of reference signs:

[0128] 1 evaporator; 2 compressor; 3 condenser; 4 electronic expansion valve; 5 four-way valve; 6 motor; 7 heat storage device; 8 heat storage circuit; 81 second electromagnetic valve; 9 heat exchange branch; 91 first electromagnetic valve. DETAILED DESCRIPTION

[0129] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that the embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application. For example, although the present embodiments are introduced in combination with the air conditioner suitable for household use, this is not intended to limit the protection scope of the present application, and those skilled in the art can apply the present application to other application scenarios without deviating from the principles of the present application. For example, the air conditioning system of the present application can obviously also be applied to other types of occasions, such as air conditioners suitable for motor homes, etc.

[0130] It should be noted that in the description of the present application, the terms "upper", "lower", "inner", "bottom", "end" and other terms indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0131] In addition, it should also be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "provided", "connected", "communicated" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0132] Firstly, referring to Figure 1 The air conditioning system of the present application is described. Among them, Figure 1 is Figure 1 is a flow chart of the air conditioning system of the present application.

[0133] As Figure 1As shown, in order to solve the problem of how to ensure the heating effect of the air conditioner in the case of air conditioner frequency reduction operation, the air conditioner system of the application comprises an evaporator 1, a driving mechanism, a heat exchange device and a heat storage device 7. The heat exchange device is arranged on the driving mechanism. The heat storage device 7 comprises a device body, a phase change material, and a heat storage channel and a heat exchange channel which are not communicated with each other, the heat storage channel and the heat exchange device form a heat storage loop 8, and a second valve body is arranged on the heat storage loop 8, so that when the second valve body is in an open state, the first refrigerant in the heat exchange device can exchange heat with the first refrigerant in the heat storage channel, and the heat is stored in the phase change material. Both ends of the heat exchange channel are arranged on the inlet side of the evaporator 1 to form a heat exchange branch 9. The first valve body is arranged to change the flow path of the second refrigerant flowing into the evaporator 1, so that when the second refrigerant flows into the heat exchange branch 9, the heat stored in the phase change material can exchange heat with the second refrigerant in the heat exchange channel.

[0134] In the application, the heat exchange device is arranged on the driving mechanism, the heat storage device 7 is provided with a phase change material and a heat storage channel and a heat exchange channel which are not communicated with each other, the heat storage channel and the heat exchange device form a heat storage loop 8, so that the first refrigerant in the heat exchange device can exchange heat with the first refrigerant in the heat storage channel, and the heat generated by the driving mechanism can be stored in the phase change material. Both ends of the heat exchange channel are arranged on the inlet side of the evaporator 1, thereby forming a heat exchange branch 9, so that the second refrigerant enters the heat exchange branch 9 before entering the evaporator 1, the second refrigerant in the heat exchange branch 9 can absorb the heat released by the phase change material, increase the temperature of the second refrigerant, thereby increasing the evaporation temperature of the evaporator 1, and further increasing the outlet air temperature of the indoor unit, so that the air conditioner can still ensure the heating effect of the air conditioner in the case of frequency reduction operation.

[0135] Further reference will be made below Figure 1 A preferred embodiment of the air conditioner system of the application is introduced. Those skilled in the art can understand that the following embodiments are only used to illustrate the principles of the application, and are not intended to limit the protection scope of the application. Under the premise of meeting the air conditioner system comprising at least an evaporator 1, a driving mechanism, a heat exchange device and a heat storage device 7, those skilled in the art can adjust the following arrangement to adapt the application to more specific application scenarios.

[0136] Referring to Figure 1 , the air conditioner system comprises an evaporator 1, a motor 6, a heat exchange device, a heat storage device 7, an electronic expansion valve 4, a condenser 3, a four-way valve 5 and a compressor 2.

[0137] Next, refer to Figure 1, evaporator 1, electronic expansion valve 4, first electromagnetic valve 91, condenser 3, four-way valve 5 and compressor 2 form a refrigerant circulation loop. Among them, the four-way valve 5 has a terminal, b terminal, c terminal and d terminal. The evaporator 1 inlet side is provided with a first electromagnetic valve 91. The flow path of the second refrigerant in the refrigerant circulation loop is compressor 2→four-way valve 5 a terminal→four-way valve 5 d terminal→first electromagnetic valve 91→evaporator 1→electronic expansion valve 4→condenser 3→evaporator 1→four-way valve 5 b terminal→electronic expansion valve 4 c terminal→compressor 2, which can meet the heating demand of the air conditioning system.

[0138] Of course, the specific form of the first valve body at the inlet side of the evaporator 1 is not fixed in the present application, and those skilled in the art can adjust it according to the setting needs. For example, the first valve body can also be a first electric valve. It should be noted that the setting of the first valve body at the inlet side of the evaporator 1 is not necessary, and those skilled in the art can choose according to the setting needs. When the first valve body is not set at the inlet side of the evaporator 1, the flow path of the second refrigerant in the refrigerant circulation loop is compressor 2→electronic expansion valve 4 a terminal→four-way valve 5 d terminal→evaporator 1→electronic expansion valve 4→condenser 3→evaporator 1→four-way valve 5 b terminal→electronic expansion valve 4 c terminal→compressor 2.

[0139] Next, referring to Figure 1 , the heat storage device 7 comprises a device body, the device body is provided with a heat storage channel, a heat exchange channel and a phase change material, and the outer side of the heat storage channel and the heat exchange channel is filled with the phase change material. Among them, the heat storage channel and the heat exchange channel are double helix structure, the outer side of the device body is wrapped with heat preservation material, and the inner side of the device body is provided with heat conducting material.

[0140] Of course, the setting form of the heat storage channel and the heat exchange channel is not fixed in the present application, and those skilled in the art can adjust it according to the setting needs. For example, the heat storage channel and the heat exchange channel can be arranged side by side. It should be noted that the material of the heat storage channel and the heat exchange channel has no limitation, as long as the first refrigerant in the heat storage channel and the second refrigerant in the heat exchange channel can exchange heat with the phase change material. For example, the material of the heat storage channel and the heat exchange channel can be copper.

[0141] Next, referring to Figure 1The air conditioning system of the present application comprises, in addition to the evaporator 1, the electronic expansion valve 4, the condenser 3, the four-way valve 5 and the compressor 2 forming a refrigerant circulation loop, a heat exchange branch 9 and a heat storage loop 8. The heat exchange branch 9 is provided with a heat exchange channel. The heat storage loop 8 is provided with a heat storage channel, a heat exchange device and a second electromagnetic valve 81. The heat exchange device is arranged on the driving mechanism and can absorb the heat generated by the driving mechanism and store the heat in the phase change material. The second refrigerant in the heat exchange channel can absorb the heat released by the phase change material, thereby heating the second refrigerant in the heat exchange channel, increasing the temperature of the second refrigerant, thereby increasing the evaporation temperature of the evaporator 1, and further increasing the outlet air temperature of the indoor unit, so that the air conditioner can still ensure the heating effect under the condition of frequency reduction operation.

[0142] Of course, the specific form of the second valve body is not fixed, and those skilled in the art can adjust it according to the setting needs. For example, the second valve body can also be a second electric valve.

[0143] Next, referring to Figure 1 The inlet side of the first electromagnetic valve 91 arranged at the inlet side of the evaporator 1 is in communication with the first end of the heat exchange branch 9, and the outlet side of the first electromagnetic valve 91 is in communication with the second end of the heat exchange branch 9, so as to form the heat exchange branch 9, which is provided with a heat exchange channel. By opening or closing the first electromagnetic valve 91, the flow path of the second refrigerant can be changed. When the first electromagnetic valve 91 is closed, the flow path of the second refrigerant is d end of the four-way valve 5→ heat exchange channel→ evaporator 1, and the second refrigerant flowing out of the compressor 2 enters the evaporator 1 after passing through the heat exchange branch 9. When the second refrigerant flows through the heat exchange branch 9, the second refrigerant in the heat exchange channel can absorb the heat released by the phase change material, thereby increasing the temperature of the second refrigerant, thereby increasing the evaporation temperature of the evaporator 1, and further increasing the outlet air temperature of the indoor unit, so that the air conditioner can still ensure the heating effect under the condition of frequency reduction operation. When the first electromagnetic valve 91 is opened, the flow path of the second refrigerant is d end of the four-way valve 5→ merging part→ evaporator 1, wherein the merging part is the part where the second refrigerant flowing out of the d end of the four-way valve 5 merges after passing through the heat exchange branch 9 and the first electromagnetic valve 91.

[0144] Of course, the application of the first electromagnetic valve 91 is not fixed, and those skilled in the art can change it according to the setting needs. For example, the first electromagnetic valve 91 can also be arranged on the heat exchange branch 9. Alternatively, the first electromagnetic valve 91 is arranged on the heat exchange branch 9. When the first electromagnetic valve 91 is opened, the second refrigerant flow path is four-way valve 5 d end→first electromagnetic valve 91→heat exchange channel→evaporator 1. When the first electromagnetic valve 91 is closed, the second refrigerant flow path is four-way valve 5 d end→evaporator 1. When the first electromagnetic valve 91 is arranged on the heat exchange branch 9, when the first electromagnetic valve 91 on the heat exchange branch 9 is opened and the second electromagnetic valve 81 on the inlet side of the evaporator 1 is closed, the second refrigerant flow path is four-way valve 5 d end→heat exchange channel→evaporator 1. When the first electromagnetic valve 91 on the heat exchange branch 9 is closed and the second electromagnetic valve 81 on the inlet side of the evaporator 1 is opened, the second refrigerant flow path is four-way valve 5 d end→first electromagnetic valve 91 on the inlet side of the evaporator 1→heat exchange channel→evaporator 1. In addition, when the first electromagnetic valve 91 is arranged on the heat exchange branch 9, the number of the first electromagnetic valve 91 can also be 2, that is, in addition to the second electromagnetic valve 81 arranged on the pipeline communicating the outlet end of the heat exchange channel with the outlet side of the first electromagnetic valve 91, the second electromagnetic valve 81 can also be arranged on the pipeline communicating the inlet end of the heat exchange channel with the inlet side of the first electromagnetic valve 91.

[0145] Next, referring to Figure 1 The heat exchange device comprises a heat exchange pipe arranged on the outer wall of the motor 6, the first end of the heat exchange pipe communicates with the first end of the heat storage channel, and the second end of the heat exchange pipe communicates with the second end of the heat storage channel. The second electromagnetic valve 81 is arranged on the pipeline communicating the first end of the heat exchange pipe with the first end of the heat storage channel. When the second electromagnetic valve 81 is opened, the first refrigerant in the heat storage channel and the first refrigerant in the heat exchange pipe can exchange heat, so that the temperature of the first refrigerant in the heat storage channel increases, and the phase change material exchanges heat with the second refrigerant through the heat storage channel, so that the phase change material can store the heat generated by the driving mechanism.

[0146] Of course, the number of the second electromagnetic valve 81 is not fixed, and those skilled in the art can adjust it according to the setting needs. For example, the number of the second electromagnetic valve 81 can be 2, that is, in addition to the second electromagnetic valve 81 arranged on the pipeline communicating the first end of the heat exchange pipe with the first end of the heat storage channel, the second electromagnetic valve 81 can also be arranged on the pipeline communicating the second end of the heat exchange pipe with the second end of the heat storage channel.

[0147] It should be noted that the material of the heat exchange pipe is not limited in the present application, as long as the first refrigerant in the heat exchange pipe is beneficial to absorbing the heat generated by the motor 6. For example, the material of the heat exchange pipe can be copper. In addition, the first refrigerant and the second refrigerant are not limited in the present application, as long as they are beneficial to heat exchange. For example, the first refrigerant can be water, and the second refrigerant can be freon. The driving mechanism of the present application is used to drive the fan in the indoor unit to rotate.

[0148] Next, the control method of the air conditioning system of the present application is introduced. Among them, Figure 2 is a flow chart of the control method of the air conditioning system of the present application. The first valve body is taken as an example to introduce the first electromagnetic valve 91, and the second valve body is taken as an example to introduce the second electromagnetic valve 81.

[0149] The present application provides a control method of an air conditioning system, which is the air conditioning system of any specific embodiment described above. The control method comprises:

[0150] S91, when the air conditioner is running, the evaporator coil temperature Tm is obtained. For example, a temperature sensor can be arranged on the evaporator 1 coil to obtain the evaporator coil temperature through the temperature sensor.

[0151] S102, compare the evaporator coil temperature Tm with the first preset temperature T1. For example, after obtaining the evaporator 1 coil temperature, the difference between the evaporator 1 coil temperature and the first preset temperature is compared to determine whether it is greater than 0, or the ratio between the two is compared to determine whether it is greater than 1.

[0152] S103, according to the comparison result, selectively control the opening or closing of the second electromagnetic valve 81 and the first electromagnetic valve 91. For example, after obtaining the comparison result of the evaporator 1 coil temperature and the first preset temperature, the second electromagnetic valve 81 and the first electromagnetic valve 91 are selectively controlled to open or close, so that the phase change material can store the heat generated by the driving mechanism through the heat storage circuit 8, and the second refrigerant can enter the heat exchange branch 9 and exchange heat with the phase change material, thereby increasing the evaporation temperature of the evaporator 1.

[0153] The present application obtains the evaporator coil temperature when the air conditioner is running, compares the evaporator coil temperature with the first preset temperature, and selectively controls the opening or closing of the second electromagnetic valve 81 and the first electromagnetic valve 91 according to the comparison result, so that the heat exchange device can store the heat generated by the driving mechanism in the phase change material, and the second refrigerant enters the heat exchange branch 9 before entering the evaporator 1. The second refrigerant in the heat exchange branch 9 can absorb the heat released by the phase change material, increase the temperature of the second refrigerant, thereby increasing the evaporation temperature of the evaporator 1, and further increasing the outlet air temperature of the indoor unit, so that the air conditioner can still ensure the heating effect of the air conditioner under the condition of frequency reduction operation.

[0154] In a specific embodiment, when the control system further comprises a first electromagnetic valve 91, and the first electromagnetic valve 91 is arranged at the inlet side of the evaporator 1, the step of "selectively controlling the second electromagnetic valve 81 and the first electromagnetic valve 91 to open or close according to the comparison result" specifically comprises:

[0155] When Tm≤T1, the first electromagnetic valve 91 is controlled to close, and the second electromagnetic valve 81 is controlled to open;

[0156] When Tm>T1, the evaporator coil temperature T is compared with the second preset temperature T2;

[0157] When T1

[0158] When Tm>T2, the first electromagnetic valve 91 is controlled to open, and the second electromagnetic valve 81 is controlled to close.

[0159] For example, taking 30℃ as the first preset temperature, when Tm≤30℃, it indicates that the evaporator coil temperature is relatively low, at this time, in order to improve the heating effect of the air conditioner, the first electromagnetic valve 91 is controlled to close, and the second electromagnetic valve 81 is controlled to open, so that the first refrigerant in the heat storage passage of the heat storage circuit 8 can exchange heat with the first refrigerant in the heat exchange pipe, and the heat generated by the driving mechanism can be stored in the phase change material. The second refrigerant flowing out of the compressor 2 enters the heat exchange branch 9 completely and exchanges heat with the phase change material, thereby improving the temperature of the second refrigerant and the heating effect of the air conditioner, so that the air conditioner can still ensure the heating effect under the condition of frequency reduction. When Tm>30℃, the evaporator coil temperature is compared with the second preset temperature, when 30℃

[0160] Further, after the step of "when Tm≤T1, the first electromagnetic valve 91 is controlled to close, and the second electromagnetic valve 81 is controlled to open", it further comprises:

[0161] The evaporator coil temperature Tm is continuously acquired;

[0162] The evaporator coil temperature Tm is compared with the second preset temperature T2;

[0163] When Tm>T2, the duration tc that Tm>T2 is acquired;

[0164] Compare the duration tc with the preset time t1.

[0165] When tc≥t1, the first solenoid valve 91 is opened, while the second solenoid valve 81 is kept in its original operating state.

[0166] For example, let's take a first preset temperature T1 of 30℃, a second preset temperature T2 of 35℃, and a preset time t1 of 3 minutes as an example. When Tm ≤ 30℃, the first solenoid valve 91 is closed, and the second solenoid valve 81 is opened, causing the evaporation temperature of evaporator 1 to increase. At this time, the evaporator coil temperature Tm is continuously acquired and compared with the second preset temperature T2. When Tm > 35℃, the duration tc of Tm > 35℃ is acquired. When tc ≥ 3 minutes, it indicates that the evaporator coil temperature is stable and maintains a high temperature. At this time, the first solenoid valve 91 is opened, and the second solenoid valve 81 is kept in its original operating state, so that the phase change material continues to absorb the heat generated by the drive mechanism through the first refrigerant, and the second refrigerant flowing out of compressor 2 no longer enters the heat exchange branch 9, but directly enters the evaporator 1.

[0167] In another alternative embodiment, when the first solenoid valve 91 is installed on the heat exchange branch 9, the step of "selectively controlling the second solenoid valve 81 and the first solenoid valve 91 to open or close according to the comparison result" specifically includes:

[0168] When Tm≤T1, control the second solenoid valve 81 and the first solenoid valve 91 to open;

[0169] When Tm>T1, compare the evaporator coil temperature T with the second preset temperature T2;

[0170] When T1 < Tm ≤ T2, control the first solenoid valve 91 to close and the second solenoid valve 81 to open;

[0171] When Tm>T2, control the first solenoid valve 91 and the second solenoid valve 81 to close.

[0172] For example, taking 30℃ as the first preset temperature. When Tm≤30℃, it indicates that the evaporator coil temperature is relatively low. At this time, in order to improve the heating effect of the air conditioner, the second electromagnetic valve 81 and the first electromagnetic valve 91 are opened, so that the first refrigerant in the heat storage passage of the heat storage circuit 8 can exchange heat with the first refrigerant in the heat exchange pipe, and the heat generated by the driving mechanism can be stored in the phase change material. The second refrigerant flowing out of the compressor 2 enters the heat exchange branch 9 completely, and exchanges heat with the phase change material, thereby improving the temperature of the second refrigerant, and further improving the heating effect of the air conditioner, so that the air conditioner can still guarantee the heating effect of the air conditioner under the condition of frequency reduction. When Tm>30℃, compare the evaporator coil temperature with the second preset temperature, when 30℃

[0173] Further, after the step of "when Tm≤T1, control the second electromagnetic valve 81 and the first electromagnetic valve 91 to open", it further includes:

[0174] Continue to obtain the evaporator coil temperature Tm;

[0175] Compare the evaporator coil temperature Tm with the second preset temperature T2;

[0176] When Tm>T2, obtain the duration tc that Tm>T2;

[0177] Compare the duration tc with the preset time t1,

[0178] When tc≥t1, control the first electromagnetic valve 91 to close, and control the second electromagnetic valve 81 to remain in the original operating state.

[0179] For example, the first preset temperature T1 is 30°C, the second preset temperature T2 is 35°C, and the preset time t1 is 3 minutes. When Tm≤30°C, the second electromagnetic valve 81 and the first electromagnetic valve 91 are controlled to be opened after the evaporator 1 evaporates at a high temperature, and the evaporator coil temperature Tm is continuously obtained. When Tm>35°C, the duration tc of Tm>35°C is obtained. When tc≥3min, it is indicated that the evaporator coil temperature is stable and remains at a high temperature. At this time, the first electromagnetic valve 91 is controlled to be closed, and the second electromagnetic valve 81 is controlled to remain in the original operating state, so that the phase change material continues to absorb the heat generated by the first refrigerant suction driving mechanism, and the second refrigerant flowing out of the compressor 2 no longer enters the heat exchange branch 9, but directly enters the evaporator 1.

[0180] In other alternative embodiments, when the first electromagnetic valve 91 is arranged at the inlet side of the evaporator 1 and the heat exchange branch 9, the step of "selectively controlling the second electromagnetic valve 81 and the first electromagnetic valve 91 to be opened or closed according to the comparison result" specifically includes:

[0181] When Tm≤T1, the first electromagnetic valve 91 at the inlet side of the evaporator 1 is controlled to be closed, and the second electromagnetic valve 81 and the first electromagnetic valve 91 on the heat exchange branch 9 are controlled to be opened;

[0182] When Tm>T1, the evaporator coil temperature Tm and the second preset temperature T2 are compared;

[0183] When T1

[0184] When Tm>T2, the first electromagnetic valve 91 at the inlet side of the evaporator 1 is controlled to be opened, and the second electromagnetic valve 81 and the first electromagnetic valve 91 on the heat exchange branch 9 are controlled to be closed.

[0185] For example, taking 30 °C as the first preset temperature, when Tm≤30 °C, it indicates that the evaporator coil temperature is relatively low, at this time, in order to improve the heating effect of the air conditioner, the first electromagnetic valve 91 at the inlet side of the evaporator 1 is controlled to be closed, and the second electromagnetic valve 81 and the first electromagnetic valve 91 on the heat exchange branch 9 are controlled to be opened, so that the first refrigerant in the heat storage channel in the heat storage circuit 8 can exchange heat with the first refrigerant in the heat exchange pipe, and the heat generated by the driving mechanism can be stored in the phase change material. The second refrigerant flowing out of the compressor 2 enters the heat exchange branch 9 completely, and exchanges heat with the phase change material, thereby improving the temperature of the second refrigerant, and further improving the heating effect of the air conditioner, so that the air conditioner can still ensure the heating effect of the air conditioner under the condition of frequency reduction. When Tm>30 °C, compare the evaporator coil temperature with the second preset temperature, when 30 °C

[0186] Further, after the step of "when Tm≤T1, the first electromagnetic valve 91 at the inlet side of the evaporator 1 is controlled to be closed, and the second electromagnetic valve 81 and the first electromagnetic valve 91 on the heat exchange branch 9 are controlled to be opened", further comprising:

[0187] Continue to obtain the evaporator coil temperature Tm;

[0188] Compare the evaporator coil temperature Tm with the second preset temperature T2;

[0189] When Tm>T2, obtain the duration tc that Tm>T2;

[0190] Compare the duration tc with the preset time t1,

[0191] When tc≥t1, the first electromagnetic valve 91 at the inlet side of the evaporator 1 is controlled to be opened, and the second electromagnetic valve 81 and the first electromagnetic valve 91 on the heat exchange branch 9 are controlled to be closed.

[0192] For example, the first preset temperature T1 is 30℃, the second preset temperature T2 is 35℃, and the preset time t1 is 3min. When Tm≤30℃, the first electromagnetic valve 91 at the inlet side of the evaporator 1 is controlled to be closed, and the second electromagnetic valve 81 and the first electromagnetic valve 91 on the heat exchange branch 9 are controlled to be opened, so that the evaporation temperature of the evaporator 1 is increased, and then the evaporator coil temperature Tm is continuously obtained, and the evaporator coil temperature Tm and the second preset temperature T2 are compared. When Tm>35℃, the duration tc of Tm>35℃ is obtained. When tc≥3min, it is indicated that the evaporator coil temperature is stable and maintains a high temperature, and the first electromagnetic valve 91 at the inlet side of the evaporator 1 is controlled to be opened, and the second electromagnetic valve 81 and the first electromagnetic valve 91 on the heat exchange branch 9 are controlled to be closed, so that the phase change material continues to absorb the heat generated by the first refrigerant absorption driving mechanism, and the second refrigerant flowing out of the compressor 2 no longer enters the heat exchange branch 9, but directly enters the evaporator 1.

[0193] The following will be described in combination with Figure 3 A possible operation process of the air conditioning system of the present application will be briefly described. Figure 3 A possible implementation of the control method of the air conditioning system of the present application.

[0194] The first electromagnetic valve 91 is arranged at the inlet side of the evaporator 1.

[0195] S201, when the air conditioner is running, the evaporator coil temperature Tm is obtained, and then S202 is executed.

[0196] S202, it is judged whether Tm≤30℃ is true. If true, S203 is executed, otherwise S209 is executed.

[0197] S203, the first electromagnetic valve 91 is controlled to be closed, and the second electromagnetic valve 81 is controlled to be opened, and then S204 is executed.

[0198] S204, the evaporator coil temperature Tm is continuously obtained, and then S205 is executed.

[0199] S205, it is judged whether Tm>35℃ is true. If true, S206 is executed, otherwise S204 is executed.

[0200] S206, the duration tc of Tm>35℃ is obtained, and then S207 is executed.

[0201] S207, it is judged whether tc≥3min is true. If true, S208 is executed, otherwise S206 is executed.

[0202] S208, the first electromagnetic valve 91 is controlled to be opened, and the second electromagnetic valve 81 is controlled to maintain the original operation state.

[0203] S209, it is judged whether 30°C < Tm≤ 35°C is satisfied. If satisfied, S210 is executed, otherwise S211 is executed.

[0204] S210, the first electromagnetic valve 91 and the second electromagnetic valve 81 are controlled to be opened.

[0205] S211, the first electromagnetic valve 91 is controlled to be opened and the second electromagnetic valve 81 is controlled to be closed.

[0206] Those skilled in the art will appreciate that a combination of features of different embodiments means within the scope of the application and forms different embodiments, although some embodiments described herein include certain features rather than others included in other embodiments. For example, in the claims of the present application, any one of the claimed embodiments can be used in any combination.

[0207] So far, the technical solution of the present application has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after these changes or replacements will fall within the protection scope of the present application.

Claims

1. A control method of an air conditioning system, characterized by, The air conditioning system comprises an evaporator, a driving mechanism, a heat exchange device, a heat storage device and a first valve body; the heat exchange device is arranged on the driving mechanism; the heat storage device comprises a device body, a phase change material arranged in the device body, and a heat storage channel and a heat exchange channel which are not communicated with each other; the heat storage channel and the heat exchange device form a heat storage loop; a second valve body is arranged on the heat storage loop, so that when the second valve body is in an open state, the first refrigerant in the heat exchange device can exchange heat with the first refrigerant in the heat storage channel, and heat is stored in the phase change material; the two ends of the heat exchange channel are arranged on the inlet side of the evaporator to form a heat exchange branch; the first valve body is arranged on the inlet side of the evaporator; the inlet side of the first valve body is communicated with the first end of the heat exchange branch, and the outlet side is communicated with the second end of the heat exchange branch; the first valve body is arranged to change the flow path of the second refrigerant flowing into the evaporator, so that when the second refrigerant flows into the heat exchange branch, the heat stored in the phase change material can exchange heat with the second refrigerant in the heat exchange channel. The control method comprises: When the air conditioner is running, the evaporator coil temperature Tm is obtained; The evaporator coil temperature Tm and the first preset temperature T1 are compared; When Tm≤T1, the first valve body is controlled to be closed, and the second valve body is controlled to be opened; When Tm>T1, the evaporator coil temperature T and the second preset temperature T2 are compared; When T1 When Tm>T2, the duration tc that Tm>T2 is obtained; 2. The control method according to claim 1, characterized by, The duration tc and the preset time t1 are compared, 3. The control method according to claim 2, characterized by, When tc≥t1, the first valve body is controlled to be opened, and the second valve body is controlled to remain in the original operating state.

4. The control method according to claim 1, characterized by, The outside of the heat storage channel and the heat exchange channel is filled with the phase change material. The heat storage channel and the heat exchange channel have a double helix structure.

5. The control method according to claim 1, characterized by, The outside of the device body is wrapped with a heat preservation material; and / or 6. The control method according to claim 5, characterized by The inside of the device body is provided with a heat conducting material.

7. The control method according to claim 1, characterized by, The heat exchange device comprises a heat exchange pipe arranged on the outer wall of the driving mechanism; the first end of the heat exchange pipe is communicated with the first end of the heat storage channel; and the second end of the heat exchange pipe is communicated with the second end of the heat storage channel.

8. The control method according to claim 1, characterized by, The heat exchange pipe is wound on the outer wall of the driving mechanism. The air conditioning system further comprises a compressor, a throttling component and a condenser; the compressor, the evaporator, the throttling component and the condenser are connected in sequence to form a refrigerant loop. The first valve body is a first electromagnetic valve or a first electric valve; and / or 9. The control method according to claim 1, characterized by, The second valve body is a second electromagnetic valve or a second electric valve; and / or The driving mechanism is an electric motor. After the step of "when Tm≤T1, the first valve body is controlled to be closed, and the second valve body is controlled to be opened", the method further comprises: The evaporator coil temperature Tm is continuously obtained; The evaporator coil temperature Tm and the second preset temperature T2 are compared; When Tm>T2, the duration tc that Tm>T2 is obtained; The duration tc and the preset time t1 are compared, When tc≥t1, the first valve body is controlled to be opened, and the second valve body is controlled to remain in the original operating state.

10. A control method of an air conditioning system, characterized by, The air conditioning system includes an evaporator, a drive mechanism, a heat exchange device, a heat storage device, and a first valve body. The heat exchange device is mounted on the drive mechanism. The heat storage device includes a device body containing a phase change material and non-communicating heat storage and heat exchange channels. The heat storage channels and the heat exchange device form a heat storage circuit. A second valve body is mounted on the heat storage circuit so that when the second valve body is open, the first refrigerant in the heat exchange device can exchange heat with the first refrigerant in the heat storage channel, allowing heat to be stored in the phase change material. Both ends of the heat exchange channel are located at the inlet side of the evaporator to form a heat exchange branch. The first valve body is mounted on the heat exchange branch. The first valve body is configured to change the flow path of the second refrigerant flowing into the evaporator, so that when the second refrigerant flows into the heat exchange branch, the heat stored in the phase change material can exchange heat with the second refrigerant in the heat exchange channel. The control method includes: When the air conditioner is running, obtain the evaporator coil temperature Tm; Compare the evaporator coil temperature Tm with the first preset temperature T1; When Tm≤T1, the second valve body and the first valve body are opened. When Tm>T1, compare the evaporator coil temperature T with the second preset temperature T2; When T1 < Tm ≤ T2, control the first valve body to close and the second valve body to open; When Tm>T2, the first valve body and the second valve body are closed.

11. The control method according to claim 10, characterized by, The outer sides of both the heat storage channel and the heat exchange channel are filled with the phase change material.

12. The control method according to claim 11, characterized by, The heat storage channel and the heat exchange channel have a double helix structure.

13. The control method according to claim 10, characterized by, The outer side of the device body is wrapped with thermal insulation material; and / or The inner side of the device body is provided with a heat-conducting material.

14. The control method according to claim 10, characterized by, The heat exchange device includes a heat exchange tube disposed on the outer wall of the drive mechanism, the first end of the heat exchange tube being connected to the first end of the heat storage channel, and the second end of the heat exchange tube being connected to the second end of the heat storage channel.

15. The control method according to claim 14, characterized by, The heat exchange tube is wound around the outer wall of the drive mechanism.

16. The control method according to claim 10, characterized by, The air conditioning system also includes a compressor, a throttling device, and a condenser, which are connected in sequence to form a refrigerant circuit.

17. The control method according to claim 10, characterized by, The first valve body is a first solenoid valve or a first electric valve; and / or The second valve body is a second solenoid valve or a second electric valve; and / or The drive mechanism is a motor.

18. The control method according to claim 10, wherein The step of "controlling the second valve body and the first valve body to open when Tm≤T1" further includes: Continue to obtain the evaporator coil temperature Tm; Compare the evaporator coil temperature Tm with the second preset temperature T2; When Tm > T2, obtain the duration tc of Tm > T2; Compare the duration tc with the preset time t1. When tc≥t1, the first valve body is closed, while the second valve body is kept in its original operating state.

19. A control method of an air conditioning system, characterized by, The air conditioning system comprises an evaporator, a driving mechanism, a heat exchange device, a heat storage device and a first valve body; the heat exchange device is arranged on the driving mechanism; the heat storage device comprises a device body, a phase change material arranged in the device body, and a heat storage channel and a heat exchange channel which are not communicated with each other; the heat storage channel and the heat exchange device form a heat storage loop; a second valve body is arranged on the heat storage loop, so that when the second valve body is in an open state, the first refrigerant in the heat exchange device can exchange heat with the first refrigerant in the heat storage channel, and heat is stored in the phase change material; both ends of the heat exchange channel are arranged on the inlet side of the evaporator to form a heat exchange branch; the first valve body is arranged on the inlet side of the evaporator and the heat exchange branch; the inlet side of the first valve body on the inlet side of the evaporator is communicated with the first end of the heat exchange branch, and the outlet side is communicated with the second end of the heat exchange branch; the first valve body is arranged to change the flow path of the second refrigerant flowing into the evaporator, so that when the second refrigerant flows into the heat exchange branch, the heat stored in the phase change material can exchange heat with the second refrigerant in the heat exchange channel. The control method comprises: When the air conditioner is running, the evaporator coil temperature Tm is obtained; The evaporator coil temperature Tm and the first preset temperature T1 are compared; When Tm≤T1, the first valve body on the inlet side of the evaporator is controlled to be closed, and the second valve body and the first valve body on the heat exchange branch are controlled to be opened; When Tm>T1, the evaporator coil temperature T and the second preset temperature T2 are compared; When T1 When Tm>T2, the first valve body on the inlet side of the evaporator is controlled to be opened, and the second valve body and the first valve body on the heat exchange branch are controlled to be closed.

20. The control method according to claim 19, wherein The outside of the heat storage channel and the heat exchange channel is filled with the phase change material.

21. The control method according to claim 20, wherein The heat storage channel and the heat exchange channel are in a double helix structure.

22. The control method according to claim 19, wherein The outside of the device body is wrapped with thermal insulation material; and / or The inside of the device body is provided with heat-conducting material.

23. The control method according to claim 19, wherein The heat exchange device comprises a heat exchange pipe arranged on the outer wall of the driving mechanism; the first end of the heat exchange pipe is communicated with the first end of the heat storage channel, and the second end of the heat exchange pipe is communicated with the second end of the heat storage channel.

24. The control method according to claim 23, characterized by, The heat exchange pipe is wound on the outer wall of the driving mechanism.

25. The control method according to claim 19, wherein The air conditioning system further comprises a compressor, a throttling device and a condenser; the compressor, the evaporator, the throttling device and the condenser are connected in sequence to form a refrigerant loop.

26. The control method according to claim 19, wherein The first valve body is a first electromagnetic valve or a first electric valve; and / or The second valve body is a second electromagnetic valve or a second electric valve; and / or The driving mechanism is an electric motor.

27. The control method according to claim 19, wherein After the step of "when Tm≤T1, controlling the first valve body on the inlet side of the evaporator to be closed, and controlling the second valve body and the first valve body on the heat exchange branch to be opened", further comprising: continuously acquiring the evaporator coil temperature Tm; comparing the evaporator coil temperature Tm with a second preset temperature T2; when Tm>T2, acquiring the duration tc that Tm>T2; comparing the duration tc with a preset time t1, when tc≥t1, controlling the first valve body on the inlet side of the evaporator to be opened, and the second valve body and the first valve body on the heat exchange branch to be closed.

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