Heat pump clothes dryer

Abstract

The utility model belongs to the technical field of household appliances, and particularly relates to a heat pump clothes dryer. The heat pump clothes dryer comprises a clothes dryer body and a filtering assembly, and the clothes dryer body is internally provided with a circulating air duct and a mounting opening communicated with the circulating air duct; the filter assembly comprises a filter screen and a driving part, the filter screen is arranged in the circulating air duct in a winding mode, one end of the filter screen is wound on the driving part so that part of the filter screen can be unfolded to form filter screen parts arranged in the circulating air duct in a blocking mode, and the driving part is configured to periodically drive the filter screen to rotate so that the previous filter screen part can be wound on the driving part; and the coiled part of the filter screen is driven to unfold to form a next filter screen part. According to the heat pump clothes dryer, the replacement frequency of the filter screen is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of household appliances, and specifically relates to a heat pump clothes dryer. Background Art

[0002] A heat pump dryer is a clothing drying device that uses heat pump technology. A heat pump dryer usually includes a dryer drum, a circulating air duct, and a heat pump system. The heat pump system can heat and dry the air in the circulating air duct, and the air in the circulating air duct flows through the dryer drum and dries the clothes. The dryer drum has an air inlet and an air outlet connected to the circulating air duct. The heat pump system includes: an evaporator and a condenser arranged in the circulating air duct, and the condenser is close to the air inlet of the dryer drum. When working, the air from the air outlet flows through the evaporator and the condenser in sequence, and then enters the dryer drum through the air inlet; the evaporator is used to liquefy the water vapor in the air, and the condenser heats the air entering the dryer drum.

[0003] Heat pump dryers produce lint during the drying process. When the lint flows through the evaporator with the air, it will adhere to the evaporator and reduce the heat exchange efficiency of the evaporator. To prevent the lint from clogging the evaporator, a filter is usually installed in the air duct to filter the air.

[0004] However, as the running time increases, lint accumulates in the filter. The accumulated lint increases the airflow resistance and affects the normal operation of the equipment, so the filter needs to be replaced frequently. Utility Model Content

[0005] The present application provides a heat pump clothes dryer, which reduces the replacement frequency of the filter.

[0006] The heat pump dryer provided in the present application comprises a dryer body and a filter assembly. The dryer body is provided with a circulating air duct and a mounting port connected to the circulating air duct.

[0007] The filter assembly includes a filter screen and a driving member. The filter screen is arranged in a coiled state in the circulating air duct. One end of the filter screen is coiled on the driving member so that part of the filter screen is unfolded to form a filter screen portion blocked in the circulating air duct. The driving member is configured to periodically drive the filter screen to rotate so that the previous filter screen portion is wound on the driving member and drives the coiled part of the filter screen to unfold to form the next filter screen portion.

[0008] In one possible implementation, the heat pump dryer provided in the present application, the filter assembly includes a first reel and a second reel, the first reel is rotatably arranged in the circulating air duct, the second reel is coaxially connected to the driving shaft of the driving member, one end of the filter net is wound on the first reel, and the other end of the filter net is connected to the second reel.

[0009] In one possible implementation, the heat pump dryer provided in the present application, the dryer body also includes an air duct cover arranged on the mounting opening, the inner side wall of the mounting opening has at least two limit grooves, and at least two locking members are rotatably provided on the air duct cover, and the locking members rotate relative to the air duct cover to engage or disengage with the limit grooves.

[0010] In a possible implementation, in the heat pump dryer provided in the present application, the locking member includes an operating section and an action section arranged on one side of the operating section, the operating section is rotatably connected to the air duct cover, and the action section is engaged or disengaged from the limiting groove.

[0011] In a possible implementation, in the heat pump clothes dryer provided in the present application, the limiting groove is an arc groove, and the end of the action section away from the operating section is in an arc shape that matches the limiting groove.

[0012] In a possible implementation, in the heat pump clothes dryer provided in the present application, a side of the air duct cover facing the mounting opening has a guide plate, and the guide plate abuts against an inner side wall of the mounting opening.

[0013] In a possible implementation, in the heat pump dryer provided in the present application, the rotation axis of the first reel is parallel to the rotation axis of the second reel.

[0014] In a possible implementation, in the heat pump dryer provided in the present application, both ends of the first reel and the second reel have stoppers, and the stoppers are used to abut against the ends of the filter.

[0015] In a possible implementation, in the heat pump dryer provided in the present application, a condenser and an evaporator are arranged in the circulation air duct, and the filter is located on a side of the evaporator away from the condenser.

[0016] In a possible implementation, in the heat pump dryer provided in the present application, the driving member is located outside the circulating air duct, and a portion of the second reel connected to the driving member extends out of the circulating air duct.

[0017] The heat pump clothes dryer provided by the present application is provided with a clothes dryer body and a filter assembly, wherein the clothes dryer body has a circulating air duct and an installation port connected to the circulating air duct, and the installation port is convenient for replacing the filter. The filter and the drive are provided to form a filter assembly, and the filter is arranged in a coiled state in the circulating air duct, and one end of the filter is coiled on the drive so that part of the filter is unfolded to form a filter part blocked in the circulating air duct to filter the air in the circulating air duct. The drive periodically drives the filter to rotate so that the previous filter part is coiled on the drive, and drives the coiled part of the filter to unfold to form the next filter part, thereby reducing the replacement frequency of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0019] Figure 1 The heat pump dryer provided in this embodiment is a schematic diagram of the structure of the heat pump dryer Figure 1 ;

[0020] Figure 2 The heat pump dryer provided in this embodiment is a schematic diagram of the structure of the heat pump dryer Figure 2 ;

[0021] Figure 3 for Figure 2 A schematic diagram of the structure of part A in the middle;

[0022] Figure 4 A diagram showing the usage status of the filtering device provided in an embodiment of the present application.

[0023] Description of reference numerals:

[0024] 100-dryer body;

[0025] 110-circulating air duct; 120-installation opening; 121-limiting groove; 130-air duct cover; 131-locking member; 1311-operating section; 1312-action section; 132-guide plate; 140-condenser; 150-evaporator;

[0026] 200-filter component;

[0027] 210-filter; 211-filter part;

[0028] 220-driving member;

[0029] 230-first scroll; 231-stopper;

[0030] 240-Second Scroll.

[0031] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0034] In the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0035] As shown in the background technology, in the prior art, heat pump dryers produce lint in the process of drying clothes. When the lint flows through the evaporator with the air, it will adhere to the evaporator and reduce the heat exchange efficiency of the evaporator. In order to prevent the lint from clogging the evaporator, a filter is generally installed in the air duct to filter the air. However, as the running time increases, the lint accumulates in the filter. The accumulated lint increases the air flow resistance and affects the normal operation of the equipment, so the filter needs to be replaced frequently.

[0036] Based on this, the heat pump clothes dryer provided by the present application is provided with a clothes dryer body and a filter assembly, and the clothes dryer body has a circulating air duct and an installation port connected to the circulating air duct, and the installation port is convenient for replacing the filter. The filter and the drive are provided to form a filter assembly, and the filter is arranged in a coiled state in the circulating air duct, and one end of the filter is coiled on the drive so that part of the filter is unfolded to form a filter part blocked in the circulating air duct to filter the air in the circulating air duct. The drive periodically drives the filter to rotate so that the previous filter part is coiled on the drive, and drives the coiled part of the filter to unfold to form the next filter part, thereby reducing the replacement frequency of the filter.

[0037] The heat pump dryer provided in the present application will be described in detail below with reference to the accompanying drawings.

[0038] Reference Figures 1 to 4 As shown, the heat pump dryer provided in the present application includes a dryer body 100 and a filter assembly 200 . The dryer body 100 has a circulating air duct 110 and a mounting port 120 communicating with the circulating air duct 110 .

[0039] The filter assembly 200 includes a filter 210 and a driving member 220. The filter 210 is arranged in a coiled state in the circulating air duct 110. One end of the filter 210 is coiled on the driving member 220 so that part of the filter 210 is unfolded to form a filter portion 211 blocked in the circulating air duct 110. The driving member 220 is configured to periodically drive the filter 210 to rotate so that the previous filter portion 211 is wound on the driving member 220, and drive the partially wound filter 210 to unfold to form the next filter portion 211.

[0040] It is understandable that the circulating air duct 110 provided in the clothes dryer body 100 can transfer the heat energy generated in the heat pump system to the wet clothes by circulating air, thereby accelerating the evaporation of moisture and the drying of the clothes. At the same time, the circulating air duct 110 can also help to evenly distribute the heat, ensuring that the clothes are evenly heated during the drying process, and avoiding the situation of local overheating or overdrying.

[0041] Furthermore, the unfolded filter 210 forms a filter portion 211 that is blocked in the circulating air duct 110 , which can filter the air in the circulating air duct 110 and intercept lint in the air.

[0042] It should be noted that the filter 210 is wound on the driving member 220. On the one hand, the driving member 220 provides support for the filter 210 to unfold part of the filter 210 to form a filter portion 211; on the other hand, it provides driving force for the filter 210 to drive the filter 210 to rotate, so as to wind the previous filter portion 211 on the driving member 220 and form the next filter portion 211.

[0043] It should also be noted that the filter 210 is arranged in a winding shape in the circulating air duct 110, so that the filter 210 can form new filter parts 211 in sequence under the drive of the driving member 220. When the previous filter part 211 loses its filtering effect, the filter 210 is driven by the driving member 220 to rotate to form the next filter part 211, thereby reducing the replacement frequency of the filter 210.

[0044] Exemplarily, the heat pump dryer can count the cycles of the drying program. When the number of times to be cleaned is reached, the dryer controls the driving member 220 to rotate before the drying program ends to form the next filter portion 211. The driving cycle of the driving member 220 can be adjusted according to the frequency of use of the heat pump dryer. When the frequency of use of the heat pump dryer is high, the driving cycle of the driving member 220 is short, and when the frequency of use of the heat pump dryer is low, the driving cycle of the driving member 220 is long. This application does not impose too many restrictions on the driving cycle of the driving member 220.

[0045] Furthermore, a mounting opening 120 is provided on the dryer body 100 to facilitate replacement of the filter 210 .

[0046] It is understandable that the heat pump dryer in the prior art needs to frequently replace the filter. The heat pump dryer in this embodiment is provided with a dryer body 100 and a filter assembly 200. The dryer body 100 has a circulating air duct 110 and a mounting port 120 connected to the circulating air duct 110. The mounting port 120 facilitates the replacement of the filter 210. The filter assembly 200 is formed by providing a filter 210 and a drive member 220. The filter 210 is arranged in a winding shape in the circulating air duct 110. One end of the filter 210 is wound on the drive member 220 so that part of the filter 210 is unfolded to form a filter portion 211 blocked in the circulating air duct 110 to filter the air in the circulating air duct 110. The driving member 220 periodically drives the filter 210 to rotate, so that the previous filter portion 211 is wound on the driving member 220 , and drives the wound portion of the filter 210 to unfold to form the next filter portion 211 , thereby reducing the replacement frequency of the filter 210 .

[0047] In some embodiments, reference Figure 4 As shown, the filter assembly 200 includes a first reel 230 and a second reel 240. The first reel 230 is rotatably disposed in the circulating air duct 110, and the second reel 240 is coaxially connected to the driving shaft of the driving member 220. One end of the filter screen 210 is wound on the first reel 230, and the other end of the filter screen 210 is connected to the second reel 240.

[0048] Specifically, by providing the first reel 230 and the second reel 240 , support is provided for the filter 210 , so that the filter 210 is unfolded to form the filter portion 211 .

[0049] Furthermore, the second reel 240 is coaxially connected to the driving shaft of the driving member 220, and the driving shaft provides driving force for the second reel 240, driving the second reel 240 to drive the first reel 230 to rotate synchronously through the filter screen 210, thereby winding the previous filter screen portion 211 on the second reel 240, and at the same time driving the wound part of the filter screen 210 on the first reel 230 to unfold to form the next filter screen portion 211, thereby reducing the replacement frequency of the filter screen 210.

[0050] Exemplarily, the driving member 220 can be a motor, the second reel 240 is sleeved on the motor shaft, and the motor shaft drives the second reel 240 to rotate; the driving member 220 can also be other driving devices, as long as it can drive the second reel 240 to rotate, the present application does not impose too many restrictions on the type of the driving member 220.

[0051] In some embodiments, reference Figure 2 and Figure 3As shown, the dryer body 100 also includes an air duct cover 130 covered on the mounting opening 120, and the inner side wall of the mounting opening 120 has at least two limiting grooves 121. The air duct cover 130 is rotatably provided with at least two locking members 131, and the locking members 131 rotate relative to the air duct cover 130 to engage with or disengage from the limiting grooves 121.

[0052] It can be understood that, by providing the limiting groove 121 , a clamping position is provided for the locking member 131 of the air duct cover 130 , and the air duct cover 130 is fixed by clamping the locking member 131 with the limiting groove 121 .

[0053] Exemplarily, there may be two or more limiting grooves 121 and locking members 131, as long as the number of limiting grooves 121 and locking members 131 is consistent, and the present application does not impose too many restrictions on this.

[0054] Specifically, the locking member 131 is rotatably connected to the air duct cover 130 to realize the rotation of the locking member 131 relative to the air duct cover 130. By rotating the locking member 131, the locking member 131 is engaged with the limiting groove 121, thereby connecting the air duct cover 130 to the mounting opening 120. The locking member 131 is rotated in the reverse direction to disengage the locking member 131 from the limiting groove 121, thereby facilitating the detachment of the air duct cover 130 from the mounting opening 120, and the operation is simple.

[0055] In some embodiments, reference Figure 3 As shown, the locking member 131 includes an operating section 1311 and an action section 1312 disposed on one side of the operating section 1311 . The operating section 1311 is rotatably connected to the air duct cover 130 , and the action section 1312 is engaged with or disengaged from the limiting groove 121 .

[0056] It can be understood that the locking member 131 is formed by providing the operating section 1311 and the action section 1312 , and rotating the operating section 1311 can drive the action section 1312 to rotate synchronously.

[0057] Specifically, the operating section 1311 is rotated so that the action section 1312 is engaged with the limiting groove 121, thereby connecting the air duct cover 130 to the installation port 120; the operating section 1311 is rotated in the opposite direction so that the action section 1312 is disengaged from the limiting groove 121, thereby facilitating the removal of the air duct cover 130 from the installation port 120, which is easy to operate and improves the disassembly and assembly efficiency of the air duct cover 130.

[0058] Exemplarily, the operating section 1311 and the air duct cover 130 may be connected via a rotating shaft or in other ways, as long as the operating section 1311 can rotate relative to the air duct cover 130, and the present application does not impose too many restrictions on the specific connection method.

[0059] In some embodiments, reference Figure 3As shown, the limiting groove 121 is an arc-shaped groove, and the end of the action section 1312 away from the operating section 1311 is in an arc shape that matches the limiting groove 121 .

[0060] It can be understood that the end of the action section 1312 is in an arc shape that matches the limiting groove 121, which can reduce the friction between the action section 1312 and the limiting groove 121, so that the action section 1312 can rotate relative to the arc groove, thereby achieving the engagement or disengagement of the action section 1312 and the limiting groove 121.

[0061] In some embodiments, reference Figure 3 As shown, the air duct cover 130 has a guide plate 132 on one side facing the installation opening 120 , and the guide plate 132 abuts against the inner side wall of the installation opening 120 .

[0062] It can be understood that by providing the guide plate 132 on the air duct cover 130 , a positioning function is provided for the air duct cover 130 , thereby further improving the installation efficiency of the air duct cover 130 .

[0063] In some embodiments, reference Figure 4 As shown, the rotation axis of the first reel 230 is parallel to the rotation axis of the second reel 240 .

[0064] It should be noted that the rotation axis of the first reel 230 is parallel to the rotation axis of the second reel 240 , ensuring that the second reel 240 can drive the first reel 230 to rotate smoothly through the filter 210 , thereby improving the efficiency of the first reel 230 in releasing a new filter portion 211 .

[0065] In some embodiments, reference Figure 4 As shown, both ends of the first reel 230 and the second reel 240 have stoppers 231 , and the stoppers 231 are used to abut against the ends of the filter screen 210 .

[0066] Specifically, stoppers 231 are provided at both ends of the first reel 230 to prevent the filter screen 210 from being separated from the first reel 230 .

[0067] Furthermore, stoppers 231 are provided at both ends of the second reel 240 to prevent the filter screen 210 from being separated from the second reel 240 .

[0068] In some embodiments, reference Figure 4 As shown, a condenser 140 and an evaporator 150 are disposed in the circulation air duct 110 , and the filter 210 is located on a side of the evaporator 150 away from the condenser 140 .

[0069] It should be noted that an evaporator 150 and a condenser 140 are arranged in the circulating air duct 110, and the wet clothes are dried quickly by circulating and converting the water, thereby improving the drying efficiency and keeping the indoor air dry. Specifically, the evaporator 150 can evaporate the water in the humid air into water vapor. When the humid air passes through the evaporator 150, the water is absorbed and converted into water vapor, thereby making the air dry, which helps to evaporate the water from the wet clothes and dry the clothes faster. The condenser 140 can condense the water vapor into liquid water. The water vapor is cooled and condensed into water in the condenser 140, and then discharged into the dry air. In this way, the water evaporated from the wet clothes can be collected to prevent the water vapor from entering the indoor environment again.

[0070] It should also be noted that the filter 210 is located on the side of the evaporator 150 away from the condenser 140, that is, the filter 210 faces the air inlet of the evaporator 150, so that the air in the circulating air duct 110 is filtered by the filter 210 before entering the evaporator 150, thereby preventing the lint in the air from clogging the evaporator 150.

[0071] In some embodiments, reference Figure 4 As shown, the driving member 220 is located outside the circulating air duct 110 , and a portion of the second reel 240 connected to the driving member 220 extends out of the circulating air duct 110 .

[0072] It can be understood that part of the second reel 240 connected to the driving member 220 extends out of the circulating air duct 110, so that the partially unfolded filter part 211 extends out of the circulating air duct 110, thereby ensuring that the filter part 211 completely blocks the circulating air duct 110, thereby improving the filtering effect of the filter part 211.

[0073] It can be understood by those skilled in the art that the heat pump clothes dryer provided in the present application is provided with a clothes dryer body 100 and a filter assembly 200, and the clothes dryer body 100 has a circulating air duct 110 and an installation port 120 connected to the circulating air duct 110, and the installation port 120 is convenient for replacing the filter 210. The filter 210 and the driving member 220 are provided to form the filter assembly 200, and the filter 210 is arranged in a winding shape in the circulating air duct 110, and one end of the filter 210 is wound on the driving member 220, so that part of the filter 210 is unfolded to form a filter part 211 blocked in the circulating air duct 110, so as to filter the air in the circulating air duct 110. The driving member 220 periodically drives the filter 210 to rotate, so that the previous filter part 211 is wound on the driving member 220, and drives the part of the filter 210 in a winding shape to unfold to form the next filter part 211, thereby reducing the replacement frequency of the filter 210.

[0074] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, 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, and the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A heat pump clothes dryer, characterized in that: The invention comprises a clothes dryer body and a filter assembly, wherein the clothes dryer body has a circulating air duct and a mounting port communicating with the circulating air duct; The filter assembly includes a filter screen and a driving member. The filter screen is arranged in a coiled state in the circulating air duct. One end of the filter screen is coiled on the driving member so that a portion of the filter screen is unfolded to form a filter screen portion blocked in the circulating air duct. The driving member is configured to periodically drive the filter screen to rotate so that the previous filter screen portion is coiled on the driving member and drives the coiled portion of the filter screen to unfold to form the next filter screen portion.

2. The heat pump dryer according to claim 1, characterized in that: The filter assembly includes a first reel and a second reel, the first reel is rotatably disposed in the circulating air duct, the second reel is coaxially connected to the driving shaft of the driving member, one end of the filter is wound on the first reel, and the other end of the filter is connected to the second reel.

3. The heat pump dryer according to claim 1, characterized in that: The dryer body also includes an air duct cover arranged on the mounting opening, the inner side wall of the mounting opening having at least two limit grooves, the air duct cover is rotatably provided with at least two locking members, the locking members rotate relative to the air duct cover to engage with or disengage from the limit grooves.

4. The heat pump dryer according to claim 3, characterized in that: The locking member comprises an operating section and an action section arranged on one side of the operating section, the operating section is rotatably connected to the air duct cover, and the action section is engaged with or disengaged from the limiting groove.

5. The heat pump clothes dryer according to claim 4, characterized in that: The limiting groove is an arc-shaped groove, and the end of the action section away from the operating section is in an arc shape matching the limiting groove.

6. The heat pump dryer according to claim 3, characterized in that: The air duct cover has a guide plate on one side facing the installation opening, and the guide plate abuts against the inner side wall of the installation opening.

7. The heat pump clothes dryer according to claim 2, characterized in that: The rotation axis of the first reel is parallel to the rotation axis of the second reel.

8. The heat pump clothes dryer according to claim 2, characterized in that: Both ends of the first reel and the second reel have stoppers, and the stoppers are used to abut against the ends of the filter screen.

9. The heat pump dryer according to any one of claims 1 to 8, characterized in that: A condenser and an evaporator are arranged in the circulation air duct, and the filter screen is located on a side of the evaporator away from the condenser.

10. The heat pump clothes dryer according to claim 2, characterized in that: The driving member is located outside the circulating air duct, and a portion of the second reel connected to the driving member extends out of the circulating air duct.

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