Clothes drying apparatus and control method thereof

Abstract

The present application relates to the technical field of clothes airing equipment, and particularly provides a clothes airing equipment and a control method thereof, aiming to solve the problem of low clothes airing efficiency of the existing clothes airing equipment. To this end, the clothes airing equipment comprises a heat pump drying device and a dehumidifying fan, the heat pump drying device comprises a compressor, a throttle valve and an evaporator, and the dehumidifying fan is arranged near the evaporator. The dehumidifying fan can improve the dehumidifying effect of the evaporator. The opening degree of the throttle valve is adjusted according to the ambient temperature of the clothes airing equipment, so that the heat pump device can be stabilized as soon as possible. After the heat pump device is stabilized, the opening degree of the throttle valve is further adjusted according to the exhaust temperature of the compressor, so as to ensure the clothes drying effect of the heat pump device at all times. The operating state of the dehumidifying fan is controlled according to the exhaust temperature of the compressor, so as to effectively assist the evaporator in condensing the moisture in the air in time, ensure a good airing environment, avoid the clothes repeatedly being in a relatively humid environment, and improve the airing efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of clothes airing equipment, and particularly provides a clothes airing equipment and a control method thereof. BACKGROUND

[0002] More and more families will choose intelligent clothes airing equipment, such as clothes airing racks or clothes airing machines, when decorating. For example, a user can control a clothes airing rack to lower to hang clothes when using the clothes airing rack, and the clothes airing rack can rise when not in use, so that the space above the balcony can be effectively utilized, clothes can be hung more conveniently, and the space utilization rate is better than that of a floor type clothes airing rack. However, the efficiency of the clothes airing rack in drying clothes is closely related to the surrounding environment, especially in rainy weather, clothes on the balcony are difficult to dry. Therefore, a heating device is arranged on the clothes airing rack, and although some heating devices can improve the drying efficiency, most of the hot air blown by the heating device remains in the balcony environment, and the water vapor evaporated from the clothes also remains in the balcony environment, so that the balcony environment is hot and humid, and the user experience is poor. Therefore, some clothes airing racks are provided with a heat pump device to use the condenser of the heat pump device to assist in drying clothes and use the evaporator of the heat pump device to condense water in the air to create a good environment. However, the heat pump device starts slowly, which reduces the efficiency of clothes airing and drying, and further reduces the user experience.

[0003] At present, a clothes airing rack that can be lifted is selected, and the clothes airing rack can be lowered to hang clothes when in use,

[0004] Therefore, there is a need for a new clothes airing equipment and a control method thereof to solve the above technical problems. SUMMARY

[0005] The present application aims to solve the above technical problems, that is, to solve the problem of low clothes airing efficiency of the existing clothes airing equipment.

[0006] In a first aspect, the present application provides a control method of a clothes airing equipment, the clothes airing equipment comprising a heat pump drying device and a dehumidifying fan, the heat pump drying device comprising a compressor, a throttling valve and an evaporator, the dehumidifying fan being arranged near the evaporator, the control method comprising: obtaining an ambient temperature where the clothes airing equipment is located; adjusting an opening degree of the throttling valve according to the ambient temperature; obtaining an exhaust temperature of the compressor after the step of adjusting the opening degree of the throttling valve; and adjusting the opening degree of the throttling valve and controlling an operating state of the dehumidifying fan again according to the exhaust temperature.

[0007] In the preferred technical solution of the above control method, the step of "adjusting the opening degree of the throttling valve according to the ambient temperature" specifically comprises:

[0008] If the ambient temperature is less than a first preset ambient temperature, the opening degree of the throttle valve is adjusted to a first preset opening degree.

[0009] If the ambient temperature is greater than or equal to the first preset ambient temperature and less than a second preset ambient temperature, the opening degree of the throttle valve is adjusted to a second preset opening degree.

[0010] If the ambient temperature is greater than or equal to the second preset ambient temperature, the opening degree of the throttle valve is adjusted to a third preset opening degree.

[0011] Wherein, the first preset opening degree is less than the second preset opening degree which is less than the third preset opening degree.

[0012] In the preferred technical solutions of the above control method, the step of "adjusting the opening degree of the throttle valve and controlling the running state of the dehumidification fan again according to the exhaust temperature" specifically includes:

[0013] If the exhaust temperature falls within a preset exhaust temperature range, the opening degree of the throttle valve is adjusted to a standard preset opening degree and the dehumidification fan is controlled to run.

[0014] In the preferred technical solutions of the above control method, in the case where the dehumidification fan runs, the control method further includes:

[0015] Obtaining an evaporation temperature of the evaporator and a dew point temperature of an environment where the clothes drying equipment is located;

[0016] Controlling the running state of the dehumidification fan according to the evaporation temperature and the dew point temperature.

[0017] In the preferred technical solutions of the above control method, the step of "controlling the running state of the dehumidification fan according to the evaporation temperature and the dew point temperature" specifically includes:

[0018] Comparing the evaporation temperature and the dew point temperature;

[0019] Controlling the running state of the dehumidification fan according to the comparison result of the evaporation temperature and the dew point temperature.

[0020] In the preferred technical solutions of the above control method, the step of "controlling the running state of the dehumidification fan according to the comparison result of the evaporation temperature and the dew point temperature" includes:

[0021] If the evaporation temperature is less than or equal to the dew point temperature, the dehumidification fan is controlled to continue running.

[0022] In the preferred technical solution of the control method, the step of "controlling the operation state of the dehumidification fan according to the comparison result of the evaporation temperature and the dew point temperature" comprises:

[0023] If the evaporation temperature is greater than the dew point temperature, the dehumidification fan is controlled to stop running.

[0024] In the preferred technical solution of the control method, after the step of "controlling the dehumidification fan to stop running if the evaporation temperature is greater than the dew point temperature", the control method further comprises:

[0025] The evaporation temperature of the evaporator is obtained again;

[0026] If the evaporation temperature obtained again is less than or equal to the difference between the dew point temperature and the preset temperature, the dehumidification fan is controlled to start running again.

[0027] In the preferred technical solution of the control method, the control method further comprises:

[0028] The ambient humidity of the clothes drying equipment and / or the humidity of clothes on the clothes drying equipment is obtained;

[0029] The on-off state of the heat pump device is controlled according to the ambient humidity and / or the humidity of clothes.

[0030] In another aspect, the present application also provides a clothes drying equipment, which comprises a controller capable of executing the control method in any of the preferred technical solutions described above.

[0031] In the case of using the above technical solution, the clothes drying equipment of the present application comprises a heat pump drying device and a dehumidification fan, the heat pump drying device comprises a compressor, a throttling valve and an evaporator, and the dehumidification fan is arranged near the evaporator. The condenser assists in drying clothes, and the evaporator condenses water in the air to create a good environment, avoiding the clothes being repeatedly in a relatively humid environment and reducing the drying efficiency. In addition, the dehumidification fan can improve the dehumidification effect of the evaporator. The present application adjusts the opening degree of the throttling valve according to the ambient temperature of the clothes drying equipment, so that the heat pump device reaches a stable running state as soon as possible. After the heat pump device is in a stable running state, the opening degree of the throttling valve is further adjusted according to the discharge temperature of the compressor, so as to always ensure the clothes drying effect of the heat pump device. In addition, the present application also controls the operation state of the dehumidification fan according to the discharge temperature of the compressor, so as to effectively assist the evaporator in condensing water in the air, ensure a good drying environment, and improve the drying efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0032] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0033] Figure 1 is a main step flow chart of the control method of the present application;

[0034] Figure 2 is a specific step flow chart of the preferred embodiment of the control method of the present application. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these 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. Those skilled in the art can make adjustments as needed to adapt to specific application occasions. For example, the drying equipment described in the present application can be a drying rack or a drying machine, which is not limited. Those skilled in the art can set the application object of the control method of the present application according to the actual use requirements. Such changes related to the application object do not deviate from the basic principles of the present application and are within the protection scope of the present application.

[0036] It should be noted that in the description of the preferred embodiments, unless otherwise explicitly specified and limited, the term "connected" should be understood broadly, for example, it can be mechanical connection, electrical connection, direct connection or indirect connection through an intermediate medium, and it can also be the connection inside two elements, so it should not be understood as a limitation of the present application. In addition, the terms "first" and "second" are only for descriptive purposes, and those skilled in the art can understand the specific meanings of the above terms in the present application according to specific circumstances.

[0037] In addition, it should be noted that in the description of the present application, although the steps of the control method of the present application are described in a specific order in the present application, these orders are not limited. Those skilled in the art can perform the steps in different orders without deviating from the basic principles of the present application.

[0038] Specifically, the drying equipment of the present application comprises a heat pump drying device and a dehumidifying fan, the heat pump drying device comprises a compressor, a condenser, a throttling valve and an evaporator, the dehumidifying fan is arranged near the evaporator, the compressor, the condenser, the throttling valve and the evaporator are connected through a refrigerant circulation loop, and a water pan is arranged below the evaporator. The condenser can release heat to dry the clothes on the drying rod of the drying equipment, and the evaporator can absorb heat to condense the moisture in the air, reduce the environmental humidity of the balcony, create a good drying environment for the clothes, avoid the clothes being placed in an environment with high humidity, and thus effectively improve the drying effect. In addition, the dehumidifying fan is used to assist the evaporator to condense the moisture in the air and improve the dehumidifying effect of the evaporator.

[0039] It should be noted that the present application does not make any limitation on the specific structure of the compressor, the condenser, the throttle valve, the evaporator and the dehumidification fan, nor does it make any limitation on the specific structure of the clothes drying equipment, for example, the clothes drying equipment can also include a telescopic assembly, the telescopic assembly includes a telescopic rod, a driving member and a limiting member, the driving member is connected with the telescopic rod, the telescopic rod is connected with the clothes drying rod to control the lifting of the clothes drying rod, and the limiting member is arranged to limit the clothes drying rod at a certain preset position; of course, this is not restrictive, and those skilled in the art can set it according to actual use requirements. In addition, it should be noted that the present application also does not make any limitation on the specific setting position of the heat pump device on the clothes drying equipment, for example, the heat pump device can be arranged near the clothes drying rod, or can be arranged below the clothes drying equipment, which is not restrictive, and those skilled in the art can set it according to actual use requirements.

[0040] Further, the clothes drying equipment further includes a temperature sensor, a humidity sensor and a controller, the temperature sensor is used to obtain the ambient temperature of the clothes drying equipment, the exhaust temperature of the compressor and the like, the humidity sensor is used to obtain the ambient humidity or the clothes humidity of the clothes drying equipment, of course, the specific type, structure, setting quantity or setting position of the temperature sensor and the humidity sensor are not restrictive. The controller can obtain the detection results of the temperature sensor and the humidity sensor, and the controller can also control the operating state of the heat pump device, for example, control the on-off state of the compressor, the opening degree of the throttle valve and the like, which is not restrictive. Those skilled in the art can understand that the present application does not make any limitation on the specific structure and model of the controller, and the controller can be the original controller of the clothes drying equipment, or a controller separately arranged for executing the control method of the present application, and those skilled in the art can set the structure and model of the controller according to actual use requirements.

[0041] Firstly refer to Figure 1 , Figure 1 is the main step flow chart of the control method of the present application. As Figure 1 shown, based on the clothes drying equipment described in the above embodiment, the control method of the present application mainly includes the following steps:

[0042] S1: obtaining the ambient temperature of the clothes drying equipment;

[0043] S2: adjusting the opening degree of the throttle valve according to the ambient temperature;

[0044] S3: obtaining the exhaust temperature of the compressor after the step of adjusting the opening degree of the throttle valve;

[0045] S4: Adjusting the opening degree of the throttle valve and controlling the operation state of the dehumidification fan according to the exhaust temperature.

[0046] Firstly, in step S1, the controller acquires the ambient temperature where the clothes drying apparatus is located. Of course, the specific acquisition method of the ambient temperature is not limited, for example, the controller can acquire the ambient temperature according to the temperature sensor arranged near the clothes drying apparatus, or compare the exhaust temperature of the compressor and the outlet temperature of the condenser, and then determine the ambient temperature according to the comparison result, which is not limited by the present application.

[0047] Then, in step S2, the controller adjusts the opening degree of the throttle valve according to the ambient temperature. For example, the controller can determine whether the acquired ambient temperature falls within the preset ambient temperature range according to the ambient temperature and the preset ambient temperature range, and can increase or decrease the opening degree of the throttle valve according to the determination result.

[0048] Further, in steps S3 and S4, after adjusting the opening degree of the throttle valve, the controller further acquires the exhaust temperature of the compressor, and then adjusts the opening degree of the throttle valve again according to the exhaust temperature, so as to ensure that the clothes drying apparatus can continue to operate stably after operating for a period of time, and ensure the drying effect of the clothes. In addition, the controller also controls the operation state of the dehumidification fan according to the exhaust temperature. The controller can control the rotation speed of the dehumidification fan, or control the on-off state of the dehumidification fan, which is not limited, and those skilled in the art can set it according to the actual situation.

[0049] Next, refer to Figure 2 , Figure 2 is the specific step flow chart of the preferred embodiment of the control method of the present application. As Figure 2 shown, based on the clothes drying apparatus described in the above embodiment, the control method of the preferred embodiment of the present application comprises the following steps:

[0050] S101: Acquiring the ambient temperature where the clothes drying apparatus is located;

[0051] S102: If the ambient temperature is less than the first preset ambient temperature, adjusting the opening degree of the throttle valve to the first preset opening degree;

[0052] S103: If the ambient temperature is greater than or equal to the first preset ambient temperature and less than the second preset ambient temperature, adjusting the opening degree of the throttle valve to the second preset opening degree;

[0053] S104: If the ambient temperature is greater than or equal to the second preset ambient temperature, adjusting the opening degree of the throttle valve to the third preset opening degree;

[0054] S105: If the exhaust temperature falls within the preset exhaust temperature range, the opening degree of the throttle valve is adjusted to a standard preset opening degree and the dehumidification fan is controlled to operate;

[0055] S106: The evaporation temperature of the evaporator and the dew point temperature of the environment where the clothes drying apparatus is located are obtained;

[0056] S107: The evaporation temperature and the dew point temperature are compared;

[0057] S108: It is determined whether the evaporation temperature is less than or equal to the dew point temperature; if the determination result is yes, step S109 is performed; if the determination result is no, step S110 is performed;

[0058] S109: The dehumidification fan is controlled to continue operating;

[0059] S110: The dehumidification fan is controlled to stop operating;

[0060] S111: The evaporation temperature of the evaporator is obtained again;

[0061] S112: If the evaporation temperature obtained again is less than or equal to the difference between the dew point temperature and the preset temperature, the dehumidification fan is controlled to start again.

[0062] First, in step S101, the controller obtains the ambient temperature where the clothes drying apparatus is located. Of course, the specific manner of obtaining the ambient temperature is not limited, for example, the controller can obtain it according to the temperature sensor arranged near the clothes drying apparatus, or compare the exhaust temperature of the compressor and the outlet temperature of the condenser, and then determine the ambient temperature according to the size comparison result, which is not limited by the present application.

[0063] In addition, it should be noted that the present application does not make any limitation on the specific start-stop timing of the heat pump device. As a specific embodiment, in the preferred embodiment, the controller first obtains the ambient humidity where the clothes drying apparatus is located and / or the humidity of the clothes on the clothes drying apparatus, and then controls the start-stop state of the heat pump device according to the ambient humidity and / or the clothes humidity. For example, if the ambient humidity is greater than a preset ambient humidity and / or the clothes humidity is greater than a preset ambient humidity, the heat pump device is controlled to start; on the contrary, if the ambient humidity is less than or equal to the preset ambient humidity and / or the clothes humidity is less than or equal to the preset ambient humidity, the heat pump device is controlled to stop operating.

[0064] Then, the controller adjusts the opening degree of the throttle valve according to the ambient temperature. Specifically, in steps S102-S104, if the ambient temperature is less than a first preset ambient temperature, the controller adjusts the opening degree of the throttle valve to a first preset opening degree; if the ambient temperature is greater than or equal to the first preset ambient temperature and less than a second preset ambient temperature, the controller adjusts the opening degree of the throttle valve to a second preset opening degree; and if the ambient temperature is greater than or equal to the second preset ambient temperature, the controller adjusts the opening degree of the throttle valve to a third preset opening degree; wherein the first preset opening degree is less than the second preset opening degree, and the second preset opening degree is less than the third preset opening degree. Based on the above setting mode, the opening degree of the throttle valve is gradually controlled as the operation time of the heat pump device is prolonged, which can ensure stable operation of the heat pump device and make the heat pump device operate to a normal state as soon as possible.

[0065] It should be noted that the present application does not limit the specific values of the first preset opening degree, the second preset opening degree, the third preset opening degree, the first preset ambient temperature, the second preset ambient temperature, and the third preset ambient temperature, and a person skilled in the art can set them according to the actual drying needs of the user and the actual operation state of the heat pump device, which is not limited by the present application.

[0066] Further, after the step of adjusting the opening degree of the throttle valve, the controller further acquires the discharge temperature of the compressor, and then adjusts the opening degree of the throttle valve again according to the discharge temperature, so as to ensure that the heat pump device can continue to operate stably and ensure the drying effect of the clothes after a period of operation. In addition, the controller also controls the operation state of the dehumidifying fan according to the discharge temperature.

[0067] In the present embodiment, the step of "adjusting the opening degree of the throttle valve again according to the discharge temperature and controlling the operation state of the dehumidifying fan" includes step S105, i.e., if the discharge temperature falls within a preset discharge temperature range, the controller adjusts the opening degree of the throttle valve to a standard preset opening degree and controls the dehumidifying fan to operate. For the preset discharge temperature range, a person skilled in the art can understand that the preset discharge temperature range can be a numerical range or a single value, which is not limited; in addition, the standard preset opening degree can be understood as the opening degree of the throttle valve when the heat pump device operates most suitably in the current environment.

[0068] Further, in step S106, in the case that the dehumidification fan is running, the controller acquires the evaporation temperature of the evaporator and the dew point temperature of the environment where the clothes drying apparatus is located. The specific acquisition method of the evaporation temperature and the dew point temperature is not limited, and those skilled in the art can acquire them according to the prior art.

[0069] Then, the controller controls the running state of the dehumidification fan according to the evaporation temperature and the dew point temperature.

[0070] Specifically, the step of "controlling the running state of the dehumidification fan according to the evaporation temperature and the dew point temperature" includes step S107, that is, comparing the evaporation temperature and the dew point temperature, and then controlling the running state of the dehumidification fan according to the comparison result of the evaporation temperature and the dew point temperature.

[0071] Further, the step of "controlling the running state of the dehumidification fan according to the comparison result of the evaporation temperature and the dew point temperature" includes steps S108 to S110: the controller determines whether the evaporation temperature is less than or equal to the dew point temperature. If the evaporation temperature is less than or equal to the dew point temperature, it means that the moisture in the environment where the clothes drying apparatus is located is still large, so the controller controls the dehumidification fan to continue running to continue assisting the evaporator in dehumidification, ensuring the dehumidification effect and effectively ensuring the clothes drying efficiency. In addition, if the evaporation temperature is greater than the dew point temperature, it means that the moisture in the environment where the clothes drying apparatus is located is low, and even if the dehumidification fan is not started, the clothes drying demand can be met, so the controller controls the dehumidification fan to stop running to reduce the running energy consumption of the clothes drying apparatus.

[0072] Further, in steps S111 and S112, after the step of "controlling the dehumidification fan to stop running if the evaporation temperature is greater than the dew point temperature", the controller acquires the evaporation temperature of the evaporator again to determine the timing of starting the dehumidification fan again to effectively ensure the dehumidification effect of the evaporator; if the evaporation temperature acquired again is less than or equal to the difference between the dew point temperature and a preset temperature, the controller controls the dehumidification fan to start again to continue assisting the evaporator in dehumidifying the environment where the clothes drying apparatus is located. The above setting method of starting the dehumidification fan again when the evaporation temperature is set to be lower than the dew point temperature by a certain degree can effectively avoid the dehumidification fan from being repeatedly started and stopped, thereby avoiding damage to the dehumidification fan due to repeated start and stop.

[0073] The technical scheme of the present application has been described in combination with the preferred embodiments shown in the drawings, but it is easy for those skilled in the art to 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 schemes after the changes or replacements will all fall within the protection scope of the present application.

Claims

1. A control method for a clothes drying device, characterized in that, The clothes drying equipment includes a heat pump drying unit and a dehumidifying fan. The heat pump drying unit includes a compressor, a throttling valve, and an evaporator. The dehumidifying fan is located near the evaporator. The control method includes: Obtain the ambient temperature of the clothes drying equipment; Adjust the opening degree of the throttle valve according to the ambient temperature; After adjusting the opening of the throttle valve, the discharge temperature of the compressor is obtained; Based on the exhaust temperature, the opening of the throttle valve is adjusted again, and the operating status of the dehumidifier is controlled. When the dehumidifying fan is operating, the control method further includes: The evaporation temperature of the evaporator and the dew point temperature of the environment in which the clothes drying equipment is located are obtained; The steps for controlling the operating status of the dehumidifying fan based on the evaporation temperature and the dew point temperature include: Compare the magnitudes of the evaporation temperature and the dew point temperature; Based on the comparison between the evaporation temperature and the dew point temperature, the operating status of the dehumidifying fan is controlled, and the steps include: If the evaporation temperature is less than or equal to the dew point temperature, the dehumidifying fan is controlled to continue operating; If the evaporation temperature is higher than the dew point temperature, the dehumidifying fan is controlled to stop operating.

2. The control method according to claim 1, characterized in that, The step of "adjusting the opening of the throttle valve according to the ambient temperature" specifically includes: If the ambient temperature is lower than the first preset ambient temperature, the opening of the throttle valve is adjusted to the first preset opening. If the ambient temperature is greater than or equal to the first preset ambient temperature and less than the second preset ambient temperature, then the opening of the throttle valve is adjusted to the second preset opening. If the ambient temperature is greater than or equal to the second preset ambient temperature, the opening of the throttle valve is adjusted to the third preset opening. Wherein, the first preset opening degree is less than the second preset opening degree, which is less than the third preset opening degree.

3. The control method according to claim 1, characterized in that, The steps of "adjusting the opening of the throttle valve and controlling the operating status of the dehumidifier fan according to the exhaust temperature" specifically include: If the exhaust temperature falls within the preset exhaust temperature range, the opening of the throttle valve is adjusted to the standard preset opening and the dehumidifying fan is controlled to operate.

4. The control method according to claim 1, characterized in that, Following the step of "if the evaporation temperature is greater than the dew point temperature, then control the dehumidifying fan to stop operating", the control method further includes: The evaporation temperature of the evaporator is obtained again; If the evaporation temperature obtained again is less than or equal to the difference between the dew point temperature and the preset temperature, the dehumidifying fan is controlled to start again.

5. The control method according to any one of claims 1 to 4, characterized in that, The control method further includes: Obtain the ambient humidity of the clothes drying device and / or the humidity of the clothes on the clothes drying device; The on / off state of the heat pump drying device is controlled according to the ambient humidity and / or the humidity of the clothing.

6. A clothes drying device, characterized in that, The clothes drying device includes a controller, which is capable of executing the control method according to any one of claims 1 to 5.

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