Heat pump operation control method and clothes treating apparatus

Abstract

The application discloses a heat pump operation control method and a clothes processing device. The heat pump operation control method comprises the following steps: detecting a user input signal; when the user input signal is pause or stop, detecting a current compressor operation state parameter, and controlling compressor operation and door lock unlocking according to the current compressor operation state parameter. The heat pump operation control method detects the current compressor operation state parameter, controls compressor operation and door lock unlocking according to the current compressor operation state parameter, controls the door lock to open in the fastest way under the premise of ensuring safe operation of the heat pump system and meeting user safety, is beneficial to prolonging the service life of the heat pump system, and increases user experience.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of clothes processing equipment, and particularly relates to a washing machine with a heat pump system and a control method thereof. BACKGROUND

[0002] When the clothes processing device with the heat pump system is running, the time for the user to press the pause is random. When the user presses the pause during high-speed operation of the compressor, the current control mode is generally that the door lock is directly unlocked. The door lock switch is used to control the power supply of the heat pump system, and if the door lock is directly unlocked, the heat pump system is directly powered off, which causes the lubricating oil not to flow back, and the lubrication effect of the compressor is poor during the next operation, reducing the service life of the compressor. It also causes the magnetic field to weaken, reducing the service life of the compressor.

[0003] However, if the compressor slows down too slowly, the waiting time for the door lock to be unlocked is too long, which will cause poor user experience. SUMMARY

[0004] The present application aims at the technical problem that the heat pump system of the existing clothes processing device is powered off immediately after receiving a pause or stop instruction during operation, causing the lubricating oil not to flow back and reducing the service life of the compressor, and proposes a heat pump operation control method, which can solve the above problems.

[0005] To achieve the above-mentioned application purposes, the present application adopts the following technical solutions:

[0006] A heat pump operation control method, comprising:

[0007] detecting a user input signal, when the user input signal is pause or stop, detecting a running state parameter of the current compressor, and controlling the running of the compressor and the unlocking of the door lock according to the running state parameter of the current compressor.

[0008] Further, the running state parameter of the compressor at least includes the rotating speed of the compressor, when the rotating speed of the compressor is less than the oil return speed V1, the door lock is unlocked, and the compressor is powered off at the same time.

[0009] Further, when the rotating speed of the compressor is not less than the oil return speed V1, the deceleration of the compressor is determined, and the compressor is controlled to decelerate according to the deceleration.

[0010] Further, when the rotating speed of the compressor decreases to the oil return speed V1, the door lock is unlocked after maintaining the current rotating speed for a running time T, and the compressor is powered off at the same time.

[0011] Further, the determination method of the time T is to detect the winding temperature of the compressor, determine the time T according to the winding temperature of the compressor, and store the time T.

[0012] Further, the winding temperature of the compressor is positively correlated with time T, the higher the winding temperature of the compressor, the greater the time T, but the time T is not greater than time T1, the time T1 is the running time of the compressor at the oil return speed V1 when the compressor is started each time, and is a preset value.

[0013] Further, when the user input signal is a pause signal and is started again, the compressor rotates at the lubrication speed, and the lubrication rotating time T2 of the compressor is determined according to the stored time T before the pause and the time T1.

[0014] Further, the determination method of the lubrication rotating time T2 of the compressor is:

[0015] T2 = T1-T;

[0016] And T2 >= Tmin, Tmin is a preset minimum lubrication time.

[0017] Further, when the speed of the compressor is not less than the oil return speed V1, the step of starting the cooling fan is further included, and the control method of the cooling fan is:

[0018] Detecting the winding temperature Tc of the compressor, when Tc >= Tmax, the speed Vf of the cooling fan = Vmax;

[0019] When Tc < Tmax, Vf = Vmin + (Tc / Tmax) * Vmin;

[0020] Wherein, Tmax is the maximum temperature of the compressor winding shaft, Vmax is the maximum speed of the cooling fan, and Vmin is the minimum speed of the cooling fan.

[0021] The application also provides a clothes treatment device, which comprises a door body, a door lock and a heat pump system, and is characterized in that the heat pump operation control method described in any one of the preceding aspects is further included.

[0022] Compared with the prior art, the application has the following advantages and positive effects:

[0023] The heat pump operation control method can detect the running state parameters of the current compressor, control the running of the compressor and the unlocking of the door lock according to the running state parameters of the current compressor, control the opening of the door lock under the premise of ensuring the safe running of the heat pump system, prolong the service life of the heat pump system, and increase the user experience.

[0024] Other features and advantages of the application will become more apparent after reading the specific embodiments of the application in combination with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0026] Figure 1 An embodiment structure schematic diagram of the clothes treatment device is provided in the present application.

[0027] Figure 2 An embodiment principle diagram of the heat pump operation control system is provided in the present application. DETAILED DESCRIPTION

[0028] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present application.

[0029] It should be noted that, in the description of the present application, the terms indicating the direction or position relationship such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the direction or position 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. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0030] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between 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.

[0031] Embodiment one

[0032] At present, some clothes treatment devices use a heat pump system as a heat source for drying clothes. For example, Figure 1As shown, the clothes treating apparatus with heat pump comprises a housing, in which is arranged an outer drum 21, in the inside of the outer drum 21 is arranged a rotatable inner drum 20, the side of the inner drum 20 is arranged with some holes to facilitate the circulation of washing liquid and air, on the upper side of the rear end of the outer drum 21, i.e. the rear end opposite to the door 18 of the washing machine, and on the lower side of the front end of the outer drum 21, are arranged a hot air outlet 17 and a hot air inlet 23, the hot air outlet 17 and the hot air inlet 23 are connected by an air duct, in the air duct on the front side below the hot air outlet 17 is arranged a fan 7, on the side wall of the air duct above the fan 7 is arranged an openable and closable air vent 5.

[0033] The clothes treating apparatus mentioned in the embodiment is not limited to the drum type, but can also be of other structural forms such as the pulsator type.

[0034] In the air duct on the lower side is arranged a heat pump system, which comprises a condenser 15, an evaporator 8, a compressor 13 and is connected in the manner of the prior art, and of course, a capillary tube or similar device is also arranged therein.

[0035] On the lower side of the evaporator 8 of the air duct is arranged a bypass, i.e. a cold air passage 12, between the cold air passage 12 and the air duct is a passage, in which is arranged a valve 16, which can close the cold air passage 12 or the air duct, when the cold air passage 12 is closed, a drying circuit of the hot air outlet 17, the air duct and the hot air inlet 23 is formed; when the air duct is closed, the air vent 5 is opened, a circuit of the air vent 5 and the cold air passage 12 is formed.

[0036] When the clothes in the washing machine need to be dried, the refrigeration system is started, at this time, the evaporator 8 forms a low temperature, and the condenser 15 forms a high temperature, the cooling water in the condenser 15 is not supplied, the fan 7 is started, the air vent 5 is closed, the valve 16 closes the cold air passage 12, i.e. the position of the valve 16 is started from the C position to the C' position, at this time, the air is drawn out from the hot air outlet 17, flows through the evaporator 8 and the water-cooled air-cooled condenser 15, and then enters the inner drum of the washing machine through the hot air inlet 23.

[0037] The humid hot air after heat exchange flows through the evaporator 8, because the evaporator 8 is in a low temperature state, the moisture in the humid hot air is quickly taken out to form water droplets, which flow to the water pump 10 along the condensate water pipe, and can be discharged out of the washing machine by the water pump 10.

[0038] The dehumidified air continues to flow through the water-cooled air-cooled condenser 15 without cooling water, because the condenser 15 is in a high temperature state, the air is heated, and then flows into the washing machine to exchange heat and moisture with the clothes, and so on, until the clothes are finally dried.

[0039] If the cooling is needed, the refrigeration system is started, the valve 16 is closed to the air duct, i.e. is swung from the position C' to the position C in Fig. 1, the passage between the water-cooled air-cooled condenser 15 and the evaporator 8 is isolated, the air vent 5 and the cool air outlet are opened, and at this time, the circulation of the indoor air, the air vent 5, the cool air passage 12 and the indoor air is formed under the action of the fan 7, and the temperature of the indoor air can be reduced.

[0040] The compressor is a core component of the entire heat pump system. When the clothes treatment device with the heat pump system is running, the time at which the user presses the pause button is random. When the user presses the pause or stop button during high-speed operation of the compressor, the current control mode is generally that the door lock is directly unlocked. The door lock switch is used to control the power supply of the heat pump system. If the door lock is directly unlocked, the heat pump system is directly powered off, which causes the lubricating oil of the compressor to be unable to flow back, and the lubrication effect of the compressor is poor during the next operation, thereby reducing the service life of the compressor.

[0041] Based on the above, the embodiment provides a heat pump operation control method, which comprises the following steps:

[0042] The user input signal is detected. When the user input signal is pause or stop, the running state parameter of the current compressor is detected, and the running of the compressor and the unlocking of the door lock are controlled according to the running state parameter of the current compressor.

[0043] Since the time at which the user operates the button is random, the user input signal needs to be detected periodically. The input mode of the user input signal can be through an operation button, a touch screen or an operation knob of the clothes treatment device.

[0044] When it is detected that the user input signal is pause or stop, the door lock is not immediately unlocked, but the running state parameter of the current compressor is first detected, and the running of the compressor is controlled according to the running state parameter of the current compressor. The door lock can be opened under the premise of ensuring the safe operation of the heat pump system, which is beneficial to prolonging the service life of the heat pump system.

[0045] Specifically, the running state management module is used to detect the user input signal. When the running state management module detects that the machine needs to be paused or stopped due to user operation, the compressor processing module is informed through an interface function, and the compressor processing module performs corresponding control, and the control mode includes but is not limited to determining the deceleration of the compressor and controlling the compressor to work according to the deceleration.

[0046] The operating state parameter of the compressor at least includes a rotating speed of the compressor, when the rotating speed of the compressor is less than an oil return rotating speed V1, the door lock is unlocked, and the compressor is powered off, wherein the oil return rotating speed V1 is a constant greater than 0. When the rotating speed of the compressor is less than the oil return rotating speed V1, it is reflected that the current rotating speed of the compressor is low, and the oil return has been almost completed, at this time, the compressor is powered off, and the compressor is not greatly affected. In order to reduce the waiting time of the user to open the door, the door lock is unlocked, and the compressor is powered off.

[0047] When the rotating speed of the compressor is not less than the oil return rotating speed V1, the deceleration of the compressor is determined, and the compressor is controlled to decelerate according to the deceleration.

[0048] When the rotating speed of the compressor is not less than the oil return rotating speed V1, it is indicated that the compressor is in high-speed operation, if it is suddenly stopped at this time, the lubricating oil of the compressor cannot be returned, and the greater the current rotating speed of the compressor, the higher the risk that the lubricating oil cannot be returned. Therefore, the compressor is controlled to decelerate at a certain deceleration B, so that the lubricating oil is returned during the gradual deceleration process, and the normal return of the lubricating oil is ensured.

[0049] When the deceleration of the compressor is determined, the step of obtaining the maximum deceleration Bmax of the heat pump system from the system stored parameters is further included, and the maximum deceleration Bmax is used as the deceleration to control the compressor to decelerate. Bmax takes different values according to different heat pump systems, which not only ensures that the compressor will not demagnetize and increases the service life of the compressor, but also quickly reduces the frequency and quickly unlocks after pausing, and increases the user experience.

[0050] When the rotating speed of the compressor decreases to the oil return rotating speed V1, the door lock is unlocked after the current rotating speed is maintained for a running time T, and the compressor is powered off. The compressor is controlled to maintain the oil return rotating speed V1 for a running time T, so that the lubricating oil which is not returned during the deceleration process is fully returned.

[0051] The general system runs at the oil return rotating speed V1 during cold start, and the cold start refers to that the compressor is in a closed state before this time, and the current power-on start is the cold start. The compressor oil return rotating speed V1 is executed for a standard time T1, and the minimum time is Tmin. The execution time of the compressor is T1 each time, and the rotating speed is V1, which ensures the lubrication effect of the compressor compression cavity.

[0052] The winding temperature of the compressor can reflect how much the current compressor returns oil from the side, therefore, in the embodiment, the determination method of the time T is that the winding temperature of the compressor is detected, the time T is determined according to the winding temperature of the compressor, and the time T is stored. The greater the time T, the longer the time for which the compressor can return oil, and the better the oil return effect.

[0053] The winding temperature of the compressor in the embodiment is positively correlated with the time T. The higher the winding temperature of the compressor, the less the current oil return amount, and thus the greater the time T for providing oil return. However, the time T is not greater than the time T1. The time T1 is the operation time of the compressor at the oil return speed V1 after each cold start of the compressor, and is a preset value.

[0054] When the user input signal is a pause signal and the compressor is started again (i.e., a hot start as opposed to a cold start), the compressor rotates at the lubrication speed, and the lubrication rotation time T2 of the compressor is determined according to the time T before the pause and the time T1.

[0055] Since the compressor has been operated at the oil return speed V1 for the time T before the pause, part of the lubricating oil has returned to the compressor. When the compressor is started again, the oil return speed does not need to be executed for the time T1, so that the heat pump system can quickly enter the normal heating state. In the embodiment, the lubrication rotation time T2 of the compressor is preferably determined as follows:

[0056] T2 = T1-T.

[0057] And T2 >= Tmin, Tmin is a preset minimum lubrication time.

[0058] In this way, the lubrication effect is ensured while the execution time of the oil return speed of the compressor after the hot start of the heat pump system is reduced, which is beneficial to shorten the drying time.

[0059] When the speed of the compressor is not less than the oil return speed V1, the method further includes the step of starting a cooling fan. The control method of the cooling fan is as follows:

[0060] Detecting the winding temperature Tc of the compressor. When Tc >= Tmax, the speed Vf of the cooling fan is Vmax.

[0061] When Tc < Tmax, Vf = Vmin + (Tc / Tmax) * Vmin.

[0062] Wherein, Tmax is the maximum temperature of the winding shaft of the compressor, Vmax is the maximum speed of the cooling fan, and Vmin is the minimum speed of the cooling fan. The scheme can rapidly cool the compressor by controlling the cooling fan within the allowable noise range.

[0063] Embodiment Two

[0064] The embodiment provides a heat pump operation control system, which comprises a compressor, a temperature sensor, a speed sensor, a control system and a cooling fan. Figure 2As shown, the management module includes a running state management module, a compressor management module, and a door lock management module. The running state management module is configured to detect a user input signal and notify the compressor management module of the need to pause the machine when detecting the user input signal. The compressor management module is configured to determine a running state parameter of the compressor and control the compressor and the door lock according to the running state parameter of the compressor.

[0065] The adjustment method of the compressor management module includes:

[0066] The adjustment method of the compressor management module includes:

[0067] Since the time when the user operates the key is random, the user input signal needs to be detected periodically. The input mode of the user input signal can be through an operation key, a touch screen, or an operation knob of the clothes treatment device.

[0068] When detecting that the user input signal is pause or stop, the door lock is not immediately unlocked, but the running state parameter of the compressor is detected first, and the compressor is controlled according to the running state parameter of the compressor. The door lock can be opened under the premise of ensuring the safe operation of the heat pump system, which is beneficial to prolong the service life of the heat pump system.

[0069] Specifically, the running state management module is configured to detect a user input signal and notify the compressor management module of the need to pause or stop the machine when detecting the user input signal. The compressor management module is configured to perform corresponding control, including but not limited to determining the deceleration of the compressor and controlling the compressor according to the deceleration.

[0070] The running state parameter of the compressor includes at least the rotational speed of the compressor. When the rotational speed of the compressor is less than the oil return speed V1, the door lock is unlocked, and the compressor is powered off, where the oil return speed V1 is a constant greater than 0. When the rotational speed of the compressor is less than the oil return speed V1, it reflects that the current rotational speed of the compressor is low, and the oil return is almost complete. At this time, powering off the compressor will not have too much impact on the compressor. In order to reduce the waiting time for the user to open the door, the door lock can be unlocked, and the compressor can be powered off.

[0071] When the rotational speed of the compressor is not less than the oil return speed V1, the deceleration of the compressor is determined, and the compressor is controlled according to the deceleration.

[0072] When the compressor speed is not less than the oil return speed V1, it indicates that it is operating at high speed. If it suddenly stops at this time, the lubricating oil in the compressor will not be able to return, and the higher the current compressor speed, the higher the risk of the lubricating oil not being able to return. Therefore, by controlling the compressor to reduce its speed by a certain deceleration rate B, the lubricating oil is allowed to return during the gradual deceleration process, ensuring the normal return of the lubricating oil.

[0073] Other steps of the control method for this compressor management module can be found in Embodiment 1, and will not be repeated here.

[0074] Example 3

[0075] This invention also proposes a garment processing device, such as... Figure 1 As shown, the garment processing device includes a housing with a door, a door lock, and a heat pump system. An outer tub 21 is installed inside the housing, and a rotatable inner tub 20 is installed inside the outer tub 21. The inner tub 20 has some holes on its side to facilitate the circulation of washing liquid and air. A hot air outlet 17 and a hot air inlet 23 are provided on the upper rear side of the outer tub 21, that is, opposite to the rear end of the washing machine door 18, and on the lower front side of the outer tub 21. The hot air outlet 17 and the hot air inlet 23 are connected by an air duct. A fan 7 is installed in the hot air duct below the hot air outlet 17. An openable and closable vent 5 is provided on the side wall of the hot air duct above the fan 7.

[0076] The clothing handling device mentioned in this embodiment is not limited to the drum type, but can also be other structural forms such as the impeller type.

[0077] A heat pump system is installed in the lower air duct. The heat pump system includes a condenser 15, an evaporator 8, and a compressor 13, which are connected in a conventional manner. Of course, a capillary tube or similar device is also installed in it.

[0078] A bypass, namely a cold air passage 12, is provided below the evaporator 8 in the air duct. There is a passage between the cold air passage 12 and the air duct, and a valve 16 is provided on the passage. The valve 16 can close the cold air passage 12 or the air duct. When the cold air passage 12 is closed, a drying circuit is formed consisting of the hot air outlet 17, the air duct, and the hot air inlet 23. When the air duct is closed, the vent 5 is opened, forming a circuit consisting of the vent 5 and the cold air passage 12.

[0079] When the laundry in the washing machine needs to be dried, the refrigeration system is started, at this time, the evaporator 8 forms a low temperature, and the condenser 15 forms a high temperature, the cooling water in the condenser 15 is not supplied, the fan 7 is started, the air vent 5 is closed, and the valve 16 closes the cold air passage 12, that is, the valve 16 is started from the C position to the C' position, at this time, the air is extracted from the hot air outlet 17, flows through the evaporator 8 and the water-cooled air-cooled condenser 15, and then enters the washing machine inner barrel through the hot air inlet 23.

[0080] The heat-exchanged humid hot air flows through the evaporator 8, and because the evaporator 8 is in a low temperature state, the moisture in the humid hot air is quickly taken out to form water droplets, which flow to the water pump 10 along the condensate water pipe and can be discharged outside the washing machine through the water pump 10.

[0081] The dehumidified air continues to flow through the water-cooled air-cooled condenser 15 without cooling water, and because the condenser 15 is in a high temperature state, the air is heated and then flows into the washing machine to exchange heat and moisture with the laundry, and the cycle is repeated until the laundry is dried.

[0082] If cooling is needed, the refrigeration system is started, the valve 16 is closed to the air passage, that is, it is swung from the C' position to the C position in FIG. 1, the passage between the water-cooled air-cooled condenser 15 and the evaporator 8 is isolated, the air vent 5 and the cold air outlet are opened, at this time, under the action of the fan 7, the indoor air, the air vent 5, the cold air passage 12, and the indoor air form a circulation, which can reduce the temperature of the indoor air.

[0083] The compressor is the core component of the entire heat pump system, and when the clothes treatment device with the heat pump system is running, because the time when the user presses the pause button is random. When the user presses the pause or stop button during high-speed operation of the compressor, the current control mode is generally that the door lock is directly unlocked. The door lock switch is used to control the power supply of the heat pump system, if the door lock is directly unlocked, the heat pump system is directly powered off, which causes the lubricating oil of the compressor to be unable to return, and the lubrication effect of the compressor is poor during the next operation, reducing the service life of the compressor.

[0084] The heat pump operation control method of the clothes treatment device of the embodiment comprises:

[0085] Detecting a user input signal, when the user input signal is pause or stop, detecting a current operating state parameter of the compressor, and controlling the operation of the compressor and the unlocking of the door lock according to the current operating state parameter of the compressor.

[0086] Because the time when the user operates the button is random, the user input signal needs to be detected periodically, and the input mode of the user input signal can be through an operation button, a touch screen, or an operation knob of the clothes treatment device.

[0087] When the user input signal is detected as pause or stop, the door lock is not immediately unlocked, but the current compressor operating state parameter is detected first, and the compressor is controlled to operate according to the current compressor operating state parameter. The door lock can be opened under the premise of ensuring the safe operation of the heat pump system, which is beneficial to prolong the service life of the heat pump system.

[0088] As shown in Figure 2 The heat pump operation control system in the embodiment includes an operating state management module, a compressor management module, and a door lock management module. The operating state management module is used to detect a user input signal. When the operating state management module detects that the whole machine needs to be paused or stopped due to user operation, the compressor processing module is notified through an interface function, and the compressor processing module performs corresponding control. The control mode includes but is not limited to determining the deceleration of the compressor and controlling the compressor to work according to the deceleration.

[0089] The operating state parameter of the compressor at least includes the rotating speed of the compressor. When the rotating speed of the compressor is less than the oil return rotating speed V1, the door lock is unlocked, and the compressor is powered off, wherein the oil return rotating speed V1 is a constant greater than 0. When the rotating speed of the compressor is less than the oil return rotating speed V1, it reflects that the current rotating speed of the compressor is low, and the oil return is almost complete. At this time, the compressor is powered off, which will not cause too much impact on the compressor. In order to reduce the user's waiting time to open the door, the door lock can be unlocked, and the compressor can be powered off at the same time.

[0090] When the rotating speed of the compressor is not less than the oil return rotating speed V1, the deceleration of the compressor is determined, and the compressor is controlled to decelerate according to the deceleration.

[0091] When the rotating speed of the compressor is not less than the oil return rotating speed V1, it means that the compressor is running at high speed. If it is suddenly stopped at this time, the lubricating oil of the compressor cannot flow back, and the greater the current rotating speed of the compressor, the higher the risk that the lubricating oil cannot flow back. Therefore, by controlling the compressor to decelerate at a certain deceleration B, the lubricating oil is allowed to flow back during the gradual deceleration process, thereby ensuring the normal flow back of the lubricating oil. The other steps of the control method of the laundry treatment device can be specifically referred to the description in Embodiment 1, which will not be repeated here.

[0092] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacements to some technical features thereof. Such modifications or replacements do not change the essence of the corresponding technical solutions, and are within the spirit and scope of the technical solutions claimed by the present application.

Claims

1. A heat pump operation control method, characterized in that, include: The system detects user input signals. When the user input signal is pause or stop, it detects the current operating status parameters of the compressor and controls the compressor to run and the door lock to unlock based on the current operating status parameters. The compressor's operating status parameters include at least the compressor speed. When the compressor speed is less than the oil return speed V1, the door lock is unlocked and the compressor is powered off. When the compressor speed is not less than the oil return speed V1, determine the compressor deceleration and control the compressor to decelerate according to the deceleration. When the compressor speed drops to the oil return speed V1, the door lock is unlocked after the current speed is maintained for a running time T, and the compressor is powered off.

2. The heat pump operation control method according to claim 1, characterized in that, The method for determining time T is as follows: detect the winding temperature of the compressor, determine time T based on the winding temperature of the compressor, and store time T.

3. The heat pump operation control method according to claim 2, characterized in that, The compressor winding temperature is positively correlated with time T. The higher the compressor winding temperature, the longer the time T, but time T is not greater than time T1. Time T1 is the running time during each cold start of the compressor when the speed is maintained at the oil return speed V1, which is a preset value.

4. The heat pump operation control method according to claim 3, characterized in that, When the user input signal is a pause signal and the compressor restarts, it rotates at the lubrication speed. The lubrication rotation time T2 of the compressor is determined based on the time T stored before the pause and the time T1.

5. The heat pump operation control method according to claim 4, characterized in that, The method for determining the compressor lubrication rotation time T2 is as follows: T2 = T1 - T; And T2>= Tmin, where Tmin is the preset minimum lubrication time.

6. The heat pump operation control method according to claim 1, characterized in that, When the compressor speed is not less than the oil return speed V1, the process also includes starting the cooling fan. The cooling fan is controlled as follows: Detect the winding temperature Tc of the compressor. When Tc >= Tmax, the speed of the cooling fan Vf = Vmax. When Tc < Tmax, Vf = Vmin + (Tc / Tmax) * Vmin; Where Tmax is the maximum temperature of the compressor around its shaft, Vmax is the maximum speed of the cooling fan, and Vmin is the minimum speed of the cooling fan.

7. A garment handling device, comprising a door, a door lock, and a heat pump system, characterized in that, It also includes the heat pump operation control method according to any one of claims 1-6.

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