Drying module and clothes drying equipment

Abstract

The utility model belongs to the technical field of electrical equipment, and particularly relates to a drying module and clothes drying equipment. The drying module comprises a compressor, a first throttling device and a first heat exchanger, a second heat exchanger and a third heat exchanger which are sequentially connected, the compressor is provided with an output part and an input part, the first heat exchanger is connected with the output part of the compressor, and the third heat exchanger is connected with the input part of the compressor; the first throttling device is connected between the first heat exchanger and the second heat exchanger, and the opening degree of the first throttling device is adjustable. The technical problem that the temperature rise of the clothes drying equipment is slow in the starting operation period can be solved to a certain degree, the drying efficiency of the clothes drying equipment can be effectively improved, the drying time is shortened, and the practicability is good.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electrical equipment, and particularly relates to a drying module and a clothes drying device. BACKGROUND

[0002] In the related art, the clothes drying device such as a clothes dryer or a washing-drying integrated machine has the technical problems of slow temperature rise and long drying time, and has room for improvement. SUMMARY

[0003] The present application provides a drying module and a clothes drying device, which aims to at least partly solve the technical problems of slow temperature rise and long drying time of the clothes drying device, so as to improve the drying efficiency of the clothes drying device.

[0004] In a first aspect of the present application, a drying module is provided, comprising: a compressor having an output and an input; a first heat exchanger, a second heat exchanger and a third heat exchanger connected in sequence, the first heat exchanger being connected to the output of the compressor, and the third heat exchanger being connected to the input of the compressor; and a first throttling device connected between the first heat exchanger and the second heat exchanger, the opening degree of the first throttling device being adjustable.

[0005] The drying module provided by the present application can change the function of the second heat exchanger in the middle by controlling the state of the first throttling device. In one working condition, the first throttling device is controlled to be fully open, the high-temperature and high-pressure refrigerant output by the compressor generates low-temperature and low-pressure refrigerant after heat exchange in the first heat exchanger and the second heat exchanger, and the low-temperature and low-pressure refrigerant generates gaseous refrigerant after heat exchange in the third heat exchanger. The gaseous refrigerant is then recycled and input into the compressor. Correspondingly, the airflow can release the moisture in the airflow through the third heat exchanger, and then be heated through the second heat exchanger and the first heat exchanger to rapidly rise in temperature, so as to solve the technical problem of slow temperature rise of the clothes drying device during initial operation. In another working condition, the opening degree of the first throttling device is reduced, the high-temperature and high-pressure refrigerant output by the compressor generates low-temperature and low-pressure refrigerant after heat exchange in the first heat exchanger, and the low-temperature and low-pressure refrigerant generates gaseous refrigerant after heat exchange in the second heat exchanger and the third heat exchanger. The gaseous refrigerant is then recycled and input into the compressor. Correspondingly, the airflow can release more moisture in the airflow through the third heat exchanger and the second heat exchanger, and then generate a dry airflow with less moisture after being heated through the first heat exchanger, which can effectively improve the drying efficiency of the clothes drying device, reduce the drying time, and has good practicability.

[0006] In some embodiments, the first throttling device is an electronic expansion valve.

[0007] In some embodiments, the drying module further comprises: a second throttling device connected between the second heat exchanger and the third heat exchanger.

[0008] In some embodiments, the second throttling device is adjustable.

[0009] In some embodiments, the second throttling device is an electronic expansion valve or a capillary tube.

[0010] In a second aspect of the present application, a clothes drying device is provided, comprising: a drum provided with an air outlet and an air inlet; an air duct, two ends of which are connected to the air outlet and the air inlet respectively; and the above-mentioned drying module, the third heat exchanger, the second heat exchanger and the first heat exchanger of the drying module being arranged in the air duct in sequence along the air flow direction.

[0011] In some embodiments, the compressor is arranged outside the air duct.

[0012] In some embodiments, the drum is provided with a temperature sensor.

[0013] In some embodiments, the clothes drying device further comprises: a processor connected to the first throttling device and the temperature sensor respectively.

[0014] In some embodiments, the clothes drying device is a clothes dryer or a washer-dryer. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0016] Figure 1 and Figure 2 Fig. 1 shows a structural schematic diagram of a clothes processing device according to an embodiment of the present application;

[0017] Figure 3 Fig. 2 shows a structural schematic diagram of a drying module in one or more embodiments of the present application;

[0018] Figure 4 Fig. 3 shows a logic control schematic diagram of a clothes drying device according to an embodiment of the present application;

[0019] Figure 5 Fig. 4 shows a flow schematic diagram of a control method of a clothes drying device in one or more embodiments of the present application.

[0020] Explanation of reference signs:

[0021] Housing-1, drop port-11, air inlet-12, air outlet passage-13, air inlet duct-14;

[0022] Door body-2;

[0023] Roller-3,

[0024] Drying module-4, compressor-41, first heat exchanger-42, second heat exchanger-43, third heat exchanger-44, first throttling device-45, second throttling device-46;

[0025] Air duct-5;

[0026] Temperature sensor-6;

[0027] Processor-7. DETAILED DESCRIPTION

[0028] In order for those skilled in the art to which the present application pertains to more clearly understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0029] In recent years, with the continuous enhancement of people's pursuit of life experience consciousness, clothes drying machines, washing and drying integrated machines and other clothes drying equipment are gradually favored by consumers in various regions due to their unique functionality. At present, the clothes drying mode mainly includes condensing type, exhaust type and heat pump type. Compared with the other two clothes drying methods, the heat pump type clothes drying mode can reduce the damage to clothes, improve the fluffiness of clothes, and can recover the latent heat and sensible heat of air flow, has low energy consumption, and is deeply loved by the public.

[0030] In the related art, the clothes drying equipment of the heat pump type clothes drying mode includes an evaporator, a condenser and an air blower arranged along the air flow direction. Under the action of the air blower, the moisture in the roller flows to the evaporator, is cooled and dehydrated by the evaporator, is heated by the condenser, forms dry air flow, and the dry air flow flows into the roller to dry the clothes in the roller. In the related art, the clothes drying equipment in the heat pump type clothes drying mode has slow heating and temperature rise at the beginning of operation, and generally needs ten or twenty minutes before the roller of the clothes drying equipment reaches the set temperature. During the clothes drying process of the clothes drying equipment, the drying efficiency is low.

[0031] The reason is that: at the initial stage of the operation of the clothes drying equipment, the heat exchange area of the condenser is insufficient, which causes slow heating and temperature rise inside the roller. After the temperature of the roller in the clothes drying equipment reaches the set temperature, the heat exchange area of the evaporator is insufficient, which causes the water in the air flow to be unable to be completely condensed, repeatedly circulates in the air duct, and causes too much water vapor to be mixed in the air flow, thereby prolonging the drying time. If the number of condensers and heat exchangers is increased to solve the above problems, the cost of the equipment will be increased.

[0032] In order to at least partially solve the problems of slow temperature rise and long drying time of the clothes drying device without increasing the cost of the device too much, the present application provides a drying module, a clothes drying device and a control method thereof, and a storage medium,

[0033] The design idea of the present application is to add a heat exchanger in the air duct. During the initial operation of the clothes drying device, the heat exchanger is controlled to be used as a condenser to quickly raise the temperature through at least two condensers, so that the temperature in the drum quickly reaches the set temperature. After the temperature in the drum quickly reaches the set temperature, the heat exchanger is controlled to be used as an evaporator to separate the moisture in the air flow, so as to output the dry air flow containing reduced moisture into the drum, thereby improving the drying efficiency and reducing the drying time.

[0034] The specific technical solutions will be described in detail with reference to the drawings, which are not necessarily drawn to scale. Similar or identical reference numerals can be used to designate similar or identical parts in different drawings. The use of similar or identical reference numerals in different drawings does not mean that all drawings including similar or identical reference numerals constitute a single or same embodiment. The drawings generally illustrate various embodiments discussed in the present application in an exemplary and non-limiting manner.

[0035] Figure 1 and Figure 2 The structure of the clothes treating device according to an embodiment of the present application is shown. As shown in Figure 1 and Figure 2 The clothes treating device, which can be a clothes dryer or a washer-dryer, includes a housing 1, a door body 2, a drum 3, and a drying module 4. The front side of the housing 1 is provided with a drop opening 11, which allows a user to put clothes into the drum 3 or take clothes out of the drum 3. The door body 2 is rotatably connected to the front side of the housing 1 to open and close the drop opening 11. The drum 3 is rotatably installed inside the housing 1 to accommodate clothes.

[0036] As shown in 1 and Figure 2 In an embodiment of the present application, the drop opening 11 is provided below the air inlet 12 of the air outlet passage 13, the drum 3 is provided below the air outlet passage 13, and the drum 3 is provided with an air inlet duct 14 at the back. The drum 3, the air outlet passage 13, and the air inlet duct 14 are sequentially communicated to form an air duct for air circulation. The drying module 4 is arranged in the air outlet passage 13. The wet air discharged from the drum 3 enters the air outlet passage 13 from the air inlet 12 and is dried by the drying module 4 to form clean dry air flow. The air inlet duct 14 introduces the dry air flow into the drum 3 to dry the clothes in the drum 3.

[0037] It should be noted that Figure 1 and Figure 2The layout method of the drying module 4, the air outlet channel 13, the air inlet 12 of the air outlet channel 13, and the air inlet channel 14 in the clothes treatment device is exemplified for the reader to understand, and does not limit the positions and relative relationships of the devices / components. For example, another embodiment of the present application is that the drying module 4 is arranged above the drum 3, or the drying module 4 is arranged above and below the drum 3 to process the moisture flow from the drum 3 into dry air flow, respectively. Correspondingly, the air outlet channel 13 or the air inlet channel 14 can be arranged above, below, or behind the drum 3. The above is not exhaustive, and is not listed one by one here.

[0038] In the first aspect of the present application, the present application provides a drying module. Figure 3 The structural schematic diagram of the drying module in one or more embodiments of the present application is shown. In combination with the above description of the layout method of the drying module 4, the air outlet channel 13, the air inlet 12 of the air outlet channel 13, and the air inlet channel 14 in the clothes treatment device, the drying module 4 of the present application includes a compressor 41, a first heat exchanger 42, a second heat exchanger 43, a third heat exchanger 44, and a first throttling device 45. The compressor 41 has an output and an input. The first heat exchanger 42, the second heat exchanger 43, and the third heat exchanger 44 are connected in sequence. The first heat exchanger 42 is connected to the output of the compressor 41. The third heat exchanger 44 is connected to the input of the compressor 41. The first throttling device 45 is connected between the first heat exchanger 42 and the second heat exchanger 43. The opening degree of the first throttling device 45 is adjustable. Figure 3

[0039] The drying module 4 provided by the present application can change the function of the second heat exchanger 43 in the middle by controlling the opening degree of the first throttling device 45. In the first working condition, the first throttling device 45 is controlled to be fully open. The high-temperature and high-pressure refrigerant output by the compressor 41 generates low-temperature and low-pressure refrigerant after heat exchange through the first heat exchanger 42 and the second heat exchanger 43. The low-temperature and low-pressure refrigerant generates gaseous refrigerant after heat exchange through the third heat exchanger 44. The gaseous refrigerant is recycled and input into the compressor 41. Correspondingly, the airflow can precipitate the moisture in the airflow through the third heat exchanger 44, and then the airflow is heated through the second heat exchanger 43 and the first heat exchanger 42 to rapidly increase the temperature, so as to solve the technical problem that the drying device has a slow temperature rise during the initial operation. In the second working condition, the opening degree of the first throttling device 45 is reduced. The high-temperature and high-pressure refrigerant output by the compressor 41 generates low-temperature and low-pressure refrigerant after heat exchange through the first heat exchanger 42. The low-temperature and low-pressure refrigerant generates gaseous refrigerant after heat exchange through the second heat exchanger 43 and the third heat exchanger 44. The gaseous refrigerant is recycled and input into the compressor 41. Correspondingly, the airflow can precipitate more moisture in the airflow through the third heat exchanger 44 and the second heat exchanger 43, and then the airflow is heated through the first heat exchanger 42 to generate a dry airflow with less moisture, which can effectively improve the drying efficiency of the drying device, reduce the drying time, and has good practicability.

[0040] ​Specifically, in the first working condition, the third heat exchanger 44 is used as an evaporator, the first heat exchanger 42 and the second heat exchanger 43 are used as two condensers, under the action of the induced draft fan, the moisture in the drum 2 flows to the third heat exchanger 44 as an evaporator, is cooled and dehydrated through the third heat exchanger 44, is heated by the first heat exchanger 42 and the second heat exchanger 43 as two condensers, and forms a dry air flow. Since the dehydrated air flow is heated through two heat exchangers, the air flow can be quickly heated to reduce the heating time. In the second working condition, the third heat exchanger 44 and the second heat exchanger 43 are used as two evaporators, and the first heat exchanger 42 is used as a condenser. Under the action of the induced draft fan, the moisture in the drum 2 flows to the third heat exchanger 44 and the second heat exchanger 43 as evaporators, is cooled and dehydrated through the third heat exchanger 44 and the second heat exchanger 43, is heated by the first heat exchanger 42 as a condenser, and forms a dry air flow. Since the moisture flow is cooled and dehydrated through two heat exchangers, more water in the air flow can be precipitated, and then a dry air flow with less water can be generated, which can effectively improve the drying efficiency of the clothes drying device and reduce the drying time.

[0041] The present application only switches through one heat exchanger (the second heat exchanger 43), so that the second heat exchanger 43 is used as a condenser or an evaporator in different working conditions. By only adding one heat exchanger, the heating time and the drying time are reduced, which has good practicability.

[0042] According to an embodiment of the present application, the first throttling device 45 can be an electronic expansion valve, which can receive instructions to switch between full opening and half opening. In the first working condition, the electronic expansion valve is fully opened and does not have a throttling effect, and the second heat exchanger 43 is used as a condenser. In the second working condition, the electronic expansion valve is half opened, and the second heat exchanger 43 is used as an evaporator. In other embodiments, the first throttling device 45 can also be other types of control valves, which are not limited in the present application.

[0043] In combination Figure 3 , according to an embodiment of the present application, the drying module 4 further includes a second throttling device 46 connected between the second heat exchanger 43 and the third heat exchanger 44. The second throttling device 46 has a throttling effect during use, and does not have to switch between full opening and half opening. The second throttling device 46 can use an electronic expansion valve or a capillary tube, which is not limited in the present application. In another embodiment, the opening degree of the second throttling device 46 is adjustable, and the third heat exchanger 44 can be used as an evaporator in the first working condition or the second working condition, which is not limited in the present application.

[0044] Based on the same design idea, in a second aspect of the present application, the present application also provides a clothes drying device, which comprises a drum 2, an air duct 5 and the above-mentioned drying module 4. The air duct 5 is connected with an air outlet and an air inlet at two ends respectively, and the third heat exchanger 44, the second heat exchanger 43 and the first heat exchanger 42 of the above-mentioned drying module 4 are arranged in the air duct 5 in sequence along the airflow direction of the air duct 5.

[0045] The clothes drying device with the above-mentioned drying module 4 can solve the technical problem of slow temperature rise of the clothes drying device during the initial operation to a certain extent, and can effectively improve the drying efficiency of the clothes drying device, reduce the drying time and has good practicability.

[0046] In an embodiment, the compressor 41 is arranged outside the air duct 5, so that the resistance of the compressor 41 to the airflow can be reduced, and the airflow can circulate smoothly. In another embodiment, the compressor 41 can also be recessed in the bottom or top of the air duct 5, which can also reduce the resistance to the airflow to a certain extent, so that the airflow can circulate smoothly.

[0047] Figure 4 The logical control schematic diagram of the clothes drying device of the present application is shown. In combination with Figure 4 According to an embodiment of the present application, the clothes drying device can be the above-mentioned drying machine or the drying and washing integrated machine. The drum 2 of the clothes drying device is provided with a temperature sensor 6 for acquiring the real-time temperature in the drum 2 of the clothes drying device in real time.

[0048] In combination with Figure 4 The clothes drying device shown in the present application also comprises a processor 7 connected with the first throttling device 45 and the temperature sensor 6 respectively. The temperature sensor 6 sends the real-time temperature in the drum 2 to the processor 7. The processor 7 controls the first throttling device 45 according to the acquired real-time temperature in the drum 2 of the clothes drying device, so that the temperature in the drum 2 of the clothes drying device is in a suitable range. The specific control mode can be referred to the description below.

[0049] Based on the same design idea, in a third aspect of the present application, the present application also provides a control method of a clothes drying device. Figure 5 The flow schematic diagram of the control method of the clothes drying device in one or more embodiments of the present application is shown. In combination with Figure 5 The control method comprises:

[0050] Acquiring the real-time temperature in the drum 2 by means of the above-mentioned temperature sensor;

[0051] Judging whether the real-time temperature in the drum 2 of the clothes drying device exceeds the set temperature by means of the processor 7;

[0052] When the real-time temperature is less than the set temperature, the first instruction is executed by the drying module 4 under the control of the processor 7, and the first instruction includes controlling the first throttling device 45 to be fully opened.

[0053] When the real-time temperature is not less than the set temperature, the second instruction is executed by the drying module 4 under the control of the processor 7, and the second instruction includes controlling the opening degree of the first throttling device 45 to be reduced.

[0054] The control method of the clothes drying device shown in the present application can control the drying module 4 to execute the first instruction when the real-time temperature is less than the set temperature. In the first working condition, the third heat exchanger 44 can be used as an evaporator, the first heat exchanger 42 and the second heat exchanger 43 can be used as two condensers, and the moisture in the drum 2 can flow to the third heat exchanger 44 under the action of the induced draft fan, and the moisture can be cooled and dehydrated by the third heat exchanger 44, heated by the first heat exchanger 42 and the second heat exchanger 43 which are used as two condensers, and form a dry gas flow. Since the dehydrated gas flow is heated by two heat exchangers, the temperature can be quickly raised to reduce the heating time. When the real-time temperature is not less than the set temperature, the processor 7 controls the drying module 4 to execute the second instruction, that is, in the second working condition, the third heat exchanger 44 and the second heat exchanger 43 are used as two evaporators, and the first heat exchanger 42 is used as a condenser. Under the action of the induced draft fan, the moisture in the drum 2 flows to the third heat exchanger 44 and the second heat exchanger 43 which are used as evaporators, and the moisture is cooled and dehydrated by the third heat exchanger 44 and the second heat exchanger 43, and then heated by the first heat exchanger 42 which is used as a condenser to form a dry gas flow. Since the moisture flow is cooled and dehydrated by two heat exchangers, more water can be separated from the gas flow, and then a dry gas flow with less water can be generated, which can effectively improve the drying efficiency of the clothes drying device and reduce the drying time.

[0055] It should be noted that the above control method is not only suitable for the initial stage of the operation of the clothes drying device, but also suitable for other stages of the operation of the clothes drying device, so as to ensure that the clothes drying device is always at a suitable set temperature during the drying process and improve the drying efficiency.

[0056] Based on the same design idea, in the third aspect of the present application, a storage medium is also provided, which stores a computer program. When the computer program is executed by the processor 7, the above control method can be realized.

[0057] The clothes drying device, the control method thereof and the storage medium provided by the present application can solve the technical problem of slow temperature rise of the clothes drying device during the initial operation to a certain extent, and can ensure that the clothes drying device is always at a suitable set temperature during the drying process, which can effectively improve the drying efficiency of the clothes drying device and reduce the drying time, and has good practicability.

[0058] In the present application, unless specifically defined and limited otherwise, the "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "on", "above" and "under" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The "under", "below" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0059] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0060] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be broadly understood, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium, can be internal connection of two elements or 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.

[0061] In addition, in the present application, the description such as "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically defined.

[0062] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A drying module, characterized in that, The dryer comprises: a compressor having an output and an input; a first heat exchanger, a second heat exchanger and a third heat exchanger connected in sequence along the airflow direction, the first heat exchanger being connected to the output of the compressor, and the third heat exchanger being connected to the input of the compressor; a first throttling device connected between the first heat exchanger and the second heat exchanger, the opening degree of the first throttling device being adjustable.

2. The drying module according to claim 1, characterized in that, The first throttling device is an electronic expansion valve.

3. The drying module according to claim 1, characterized in that, The dryer further comprises: a second throttling device connected between the second heat exchanger and the third heat exchanger.

4. The drying module according to claim 3, characterized in that, The opening degree of the second throttling device is adjustable.

5. The drying module according to claim 3 or 4, characterized in that, The second throttling device is an electronic expansion valve or a capillary tube.

6. A clothes drying apparatus, characterized by, The dryer comprises: a drum provided with an air outlet and an air inlet; an air duct having two ends connected to the air outlet and the air inlet respectively; The third heat exchanger, the second heat exchanger and the first heat exchanger of the drying module according to any one of claims 1-5 are arranged in the air duct in sequence along the airflow direction of the air duct. 7.The laundry drying apparatus of claim 6, wherein, The compressor is arranged outside the air duct. 8.The laundry drying apparatus of claim 6, wherein, The drum is provided with a temperature sensor. 9.The clothes drying apparatus of claim 8, wherein, The dryer further comprises: a processor connected to the first throttling device and the temperature sensor respectively.

10. The laundry drying apparatus according to any of claims 6-9, characterized in that, The dryer is a clothes dryer or a washer-dryer.

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