Anti-winding evaporator for heat pump clothes dryer

Abstract

This utility model discloses an anti-tangling evaporator for a heat pump dryer, including a return air box, an air outlet box connected to the return air box and communicating with its inner cavity, an evaporator installed in the inner cavity of the return air box, a return air frame on the top of the return air box, a detachable mounting frame on the top of the return air frame, a U-shaped frame inserted into the inner cavity of the return air frame connected to the bottom of the mounting frame, first connecting strips connected to the front and rear sides of the U-shaped frame, a lint filter screen rotatably connected to the first connecting strips, a second connecting strip connected to one side of the lint filter screen, a limiting mechanism for limiting the second connecting strip on the side wall of the U-shaped frame, and a through hole communicating with its inner cavity on the top of the mounting frame. This utility model, by connecting the mounting frame to the return air box and installing a lint filter screen on the U-shaped frame at the bottom of the mounting frame, can filter the airflow entering the return air box, preventing lint contained in the airflow from tangling on the evaporator.

Description

Technical Field

[0001] This utility model relates to the field of heat pump dryer technology, specifically to an anti-winding evaporator for heat pump dryers. Background Technology

[0002] A heat pump dryer is a new type of clothing drying equipment that uses heat pump technology. A heat pump dryer typically includes a drying drum, a circulating air duct, and a heat pump system. The heat pump system heats and dries the air in the circulating air duct. The air in the circulating air duct flows through the drying drum and dries the clothes. The working principle of a heat pump dryer is as follows: the circulating air is heated by the condenser into dry hot air. The hot air is blown into the drying drum. The dry hot air passes through the wet clothes, taking away the moisture and becoming warm and humid air. The warm and humid air enters the evaporator, where it is cooled and moisture is released, becoming dry cold air. The dry cold air is then heated back into dry hot air and enters the drying drum again. This cycle continues to dry the clothes.

[0003] A heat pump dryer with publication number CN115491879A includes a housing, an evaporator, and a cleaning system. The housing has a water tank at its bottom, and the evaporator is positioned above the water tank. The cleaning system includes a drive unit, a rotating shaft, and an impeller mounted on the shaft. The shaft is rotatably connected to the housing and is driven by the drive unit. The impeller is located inside the water tank and is used to spray water from the tank onto the evaporator during rotation. With this configuration, when the impeller rotates, condensate from the water tank enters the impeller axially and is then radially ejected onto the evaporator. As the condensate flows downwards, it washes away accumulated lint from the evaporator into the water tank, reducing lint buildup. However, condensate easily adheres to the evaporator surface, forming a water film, increasing thermal resistance, reducing heat transfer efficiency, and long-term condensate adhesion can also corrode the evaporator. Utility Model Content

[0004] The purpose of this invention is to provide an anti-winding evaporator for heat pump dryers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-winding evaporator for a heat pump dryer, comprising a return air box, an air outlet box connected to the return air box and communicating with its inner cavity, an evaporator installed in the inner cavity of the return air box, a return air frame on the top of the return air box, a mounting frame detachably provided on the top of the return air frame, a U-shaped frame inserted into the inner cavity of the return air frame connected to the bottom of the mounting frame, first connecting strips connected to the front and rear sides of the U-shaped frame, a lint filter rotatably connected to the first connecting strips, a second connecting strip connected to one side of the lint filter, a limiting mechanism for limiting the second connecting strip on the side wall of the U-shaped frame, and a through hole communicating with its inner cavity on the top of the mounting frame.

[0006] Preferably, the limiting mechanism includes a U-shaped groove, a U-shaped rod, and a pressure block. The side wall of the return air box is provided with a U-shaped groove, and the U-shaped rod is movably connected in the U-shaped groove. Both arms of the U-shaped rod are connected to pressure blocks that extend out of the U-shaped groove. The pressure blocks press the second connecting strip onto the return frame.

[0007] Preferably, both arms of the U-shaped rod are equipped with pins that are rotatably connected to the inner wall of the U-shaped groove, and the U-shaped rod is also connected to a spring that is connected to the inner wall of the U-shaped groove.

[0008] Preferably, the second connecting strip has at least one positioning hole, and the U-shaped frame is equipped with a positioning block that can extend into the positioning hole.

[0009] Preferably, a magnet is installed on the second connecting strip, and an iron sheet that is magnetically connected to the magnet is embedded in the U-shaped frame.

[0010] Preferably, a guide groove is provided at the bottom front side of the mounting frame, and a guide block that can be inserted into the guide groove is fixedly connected to the top of the return air frame.

[0011] Preferably, the mounting frame has operating grooves on both sides and a sealing gasket is connected to the bottom of the mounting frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model connects an installation frame to the return air frame, and a lint filter is set on the U-shaped frame at the bottom of the installation frame. The lint filter can filter the airflow entering the return air box and prevent the lint contained in the airflow from getting tangled on the evaporator.

[0014] 2. This utility model connects a first connecting strip and a second connecting strip to both ends of the lint filter screen. The first connecting strip is installed at one end of the return air frame, and its other end is detachably installed at the other end of the return air frame via the second connecting strip. This allows the second connecting strip to be easily removed from the return air frame, enabling the lint filter screen to unfold and facilitating user cleaning of the lint filter screen. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the return air box of this utility model;

[0017] Figure 3 This is a schematic diagram of the mounting frame of this utility model;

[0018] Figure 4 This utility model Figure 3 Enlarged diagram of point A in the diagram;

[0019] Figure 5 This is a schematic diagram of the structure of the rotary frame of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the fluff filter screen of this utility model;

[0021] Figure 7 This is a schematic diagram of the U-shaped rod of this utility model.

[0022] In the diagram: 1. Return air box; 2. Outlet air box; 3. Return air frame; 4. Evaporator; 5. Mounting frame; 6. U-shaped bracket; 7. Through hole; 8. Fluff filter; 9. First connecting strip; 10. Second connecting strip; 11. U-shaped groove; 12. U-shaped rod; 13. Pressure block; 14. Spring; 15. Pin; 16. Positioning hole; 17. Positioning block; 18. Magnet; 19. Guide groove; 20. Guide block; 21. Operation groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-7This utility model provides a technical solution: an anti-winding evaporator for a heat pump dryer, comprising a return air box 1, an air outlet box 2 connected to the return air box 1 and communicating with its inner cavity, an evaporator 4 installed in the inner cavity of the return air box 1, a return air frame 3 on the top of the return air box 1, a mounting frame 5 detachably provided on the top of the return air frame 3, a U-shaped frame 6 inserted into the inner cavity of the return air frame 3 connected to the bottom of the mounting frame 5, first connecting strips 9 connected to the front and rear sides of the U-shaped frame 6, a lint filter 8 rotatably connected to the first connecting strips 9, a second connecting strip 10 connected to one side of the lint filter 8, a limiting mechanism for limiting the second connecting strip 10 provided on the side wall of the U-shaped frame 6, and a through hole 7 communicating with its inner cavity on the top of the mounting frame 5.

[0025] Lint filters 8 are installed on both the front and rear sides of the return frame 6. A condenser is installed inside the air outlet box 2. The mounting frame 5 at the top of the return air frame 3 is located at the inlet of the dryer drum. A corresponding fan is installed between the air outlet box 2 and the return air box 1. Before the air in the dryer drum enters the evaporator 4, the air is filtered by the lint filters 8, so that lint, dander and other foreign objects are filtered out, and lint, dander and other foreign objects are prevented from adhering to the surface of the evaporator 4.

[0026] The limiting mechanism includes a U-shaped groove 11, a U-shaped rod 12, and a pressure block 13. The side wall of the return air box 1 is provided with a U-shaped groove 11. The U-shaped rod 12 is movably connected in the U-shaped groove 11. Both arms of the U-shaped rod 12 are connected to pressure blocks 13 that extend out of the U-shaped groove 11. The pressure blocks 13 press the second connecting strip 10 onto the return frame 6.

[0027] Both arms of the U-shaped rod 12 are equipped with pins that are rotatably connected to the inner wall of the U-shaped groove 11. The U-shaped rod 12 is also connected to a spring 14 that is connected to the inner wall of the U-shaped groove 11.

[0028] The U-shaped rod 12 can rotate relative to the pin so that the pressure block 13 moves away from or close to the second connecting strip 10. When the second connecting strip 10 is attached to the loop frame 6, the lint filter 8 covers the opening of the loop frame 6. The pressure block 13 can press the second connecting strip 10 onto the surface of the loop frame 6 to prevent the second connecting strip 10 from loosening, thus ensuring the stability of the lint filter 8.

[0029] Spring 14 is installed on the end of U-shaped rod 12 away from pressure block 13. When the mounting frame 5 is removed from the return air frame 3, pressing the end of U-shaped rod 12 away from pressure block 13 can compress spring 14. At the same time, pressure block 13 will move away from the second connecting strip 10. At this time, the second connecting strip 10 can be pulled to unfold the lint filter screen 8, so that the lint attached to the surface of the lint filter screen 8 can be cleaned easily. The side of pressure block 13 facing the return air frame 3 is inclined.

[0030] The second connecting strip 10 has at least one positioning hole 16, and the U-shaped frame 6 is equipped with a positioning block 17 that can extend into the positioning hole 16.

[0031] When the second connecting strip 10 is attached to the U-shaped frame 6, the cooperation between the positioning hole 16 and the positioning block 17 can perform preliminary positioning and limiting of the installation of the second connecting strip 10.

[0032] A magnet 18 is installed on the second connecting strip 10, and an iron sheet that is magnetically connected to the magnet 18 is embedded in the U-shaped frame 6.

[0033] When the second connecting strip 10 is attached to the ring frame 6, the magnet 18 can magnetically connect to the iron sheet on the ring frame 6, which can further stabilize the second connecting strip 10 and prevent it from falling off, thereby ensuring that the lint filter 8 is in a stable state and can effectively filter foreign objects such as lint and fluff in the air.

[0034] The bottom front side of the mounting frame 5 is provided with a guide groove 19, and the top of the return air frame 3 is fixedly connected with a guide block 20 that can be inserted into the guide groove 19.

[0035] When placing the mounting frame 5, aligning the guide groove 19 on the mounting frame 5 with the guide block 20 can position the mounting frame 5 and prevent improper placement or misalignment of the mounting frame 5.

[0036] The mounting frame 5 has operating slots 21 on both sides, and a sealing gasket is connected to the bottom of the mounting frame 5.

[0037] The operating slots 21 on both sides of the mounting frame 5 allow the user's fingers to pass through easily, allowing the user to lift the mounting frame 5 and cause the loop frame 6 and the lint filter 8 on it to detach from the return air frame 3. The sealing gasket at the bottom of the mounting frame 5 is in the shape of a rectangular ring and is passed through by the loop frame 6. When the mounting frame 5 is placed on top of the return air frame 3, the bottom of the sealing gasket contacts the top of the return air frame 3.

[0038] In summary, by connecting the mounting frame 5 to the return air frame 3, and setting the lint filter 8 on the U-shaped frame 6 at the bottom of the mounting frame 5, the lint filter 8 can filter the airflow entering the return air box 1, preventing the lint contained in the airflow from getting tangled on the evaporator 4.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-winding evaporator for a heat pump dryer, comprising a return air housing (1), characterized in that: The return air box (1) is connected to the air outlet box (2) which communicates with its inner cavity. An evaporator (4) is installed in the inner cavity of the return air box (1). The top of the return air box (1) has a return air frame (3). The top of the return air frame (3) is detachably provided with an installation frame (5). The bottom of the installation frame (5) is connected to a U-shaped frame (6) that is inserted into the inner cavity of the return air frame (3). The front and rear sides of the U-shaped frame (6) are connected to first connecting strips (9). The first connecting strips (9) are rotatably connected to a fluff filter screen (8). One side of the fluff filter screen (8) is connected to a second connecting strip (10). The side wall of the U-shaped frame (6) is provided with a limiting mechanism for limiting the second connecting strip (10). The top of the installation frame (5) is provided with a through hole (7) that communicates with its inner cavity.

2. The anti-winding evaporator for a heat pump dryer according to claim 1, characterized in that: The limiting mechanism includes a U-shaped groove (11), a U-shaped rod (12), and a pressure block (13). The side wall of the return air box (1) is provided with a U-shaped groove (11). The U-shaped rod (12) is movably connected in the U-shaped groove (11). Both arms of the U-shaped rod (12) are connected to pressure blocks (13) that extend out of the U-shaped groove (11). The pressure blocks (13) press the second connecting strip (10) onto the return frame (6).

3. An anti-winding evaporator for a heat pump dryer according to claim 2, characterized in that: Both arms of the U-shaped rod (12) are equipped with pins that are rotatably connected to the inner wall of the U-shaped groove (11), and the U-shaped rod (12) is also connected to a spring (14) that is connected to the inner wall of the U-shaped groove (11).

4. An anti-winding evaporator for a heat pump dryer according to claim 1, characterized in that: The second connecting strip (10) has at least one positioning hole (16), and the shaped frame (6) is equipped with a positioning block (17) that can extend into the positioning hole (16).

5. An anti-winding evaporator for a heat pump dryer according to claim 1, characterized in that: A magnet (18) is installed on the second connecting strip (10), and an iron piece is embedded in the U-shaped frame (6) and magnetically connected to the magnet (18).

6. An anti-winding evaporator for a heat pump dryer according to claim 1, characterized in that: The mounting frame (5) has a guide groove (19) at the bottom front side, and the top of the return air frame (3) is fixedly connected to a guide block (20) that can be inserted into the guide groove (19).

7. An anti-winding evaporator for a heat pump dryer according to claim 1, characterized in that: The mounting frame (5) has operation slots (21) on both sides, and a sealing gasket is connected to the bottom of the mounting frame (5).

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