A circulating hot air dehumidification and impurity removal device for a heat pump dryer

Abstract

The present invention relates to the technical field of heat pump dryers, and specifically discloses a circulating hot air dehumidification and impurity removal device in a heat pump dryer, comprising a water tank, a fin mounting casing, a condensing fin assembly and a hot air guide member, the upper half of the fin mounting casing is arc-shaped, and the lower half forms a cleaning tank, the front and rear sides of the fin mounting casing are both provided with sealed bearings, the condensing fin assembly comprises a ring body connected to the sealed bearing, a plurality of heat dissipation fins are arranged between the two ring bodies, and the fin mounting casing is provided with a driving device for driving the condensing fin assembly to rotate around the sealed bearing; the present dehumidification and impurity removal device changes the structural form of the traditional condenser, so that the condensing fin assembly rotates in the casing, and the fins will be immersed in the cleaning liquid in the cleaning tank as the rotation takes place, and the cleaning liquid can not only cool the fins, but also clean and remove impurities attached to the surface of the fins, thereby ensuring the continuous operation of the entire device.

Description

Technical Field

[0001] The invention relates to the technical field of heat pump dryers, and in particular discloses a circulating hot air dehumidification and impurity removal device in a heat pump dryer. Background Art

[0002] A heat pump dryer is a new type of energy-saving drying equipment. Combined with a drying room and drying box, it is now widely used in the drying process for products such as traditional Chinese medicine, agricultural and sideline products, tea, and preserved foods. To improve the energy efficiency of a heat pump dryer, it is often necessary to reintroduce the hot air from the drying room through a return air duct into the heat pump dryer for heat exchange. The heated air is then re-entered into the drying room to dry the product.

[0003] For example, the utility model patent with application number CN2020226705550 discloses a heat pump dryer with an air circulation structure, including a main box and a heat pump device. An air supply pipe is provided between the heat pump device and the side wall of the main box, and an air return pipe is provided between the top of the main box and the heat pump device. A filter is provided on the air return pipe. Two sets of plug-ins are plugged into the filter housing, one set of plug-ins is encapsulated with a filter cotton net in the middle, and the other set of plug-ins is encapsulated with a glass fiber filter paper in the middle. During the operation of the heat pump dryer disclosed in this utility model, the hot air generated by its heat pump device circulates throughout the device through the air supply pipe and the air return pipe, and the impurities in the hot air are filtered by the filter cotton net and glass fiber filter paper inside the filter, which has a certain hot air purification effect. However, after the filter in the heat pump dryer has been running for a period of time, the operator needs to climb to the top of the main box to replace the internal filter element to ensure the filtering effect, and its operation is complicated and cumbersome. Moreover, when drying some preserved foods, the grease mixed in the hot air is not easily removed by the filter and will re-enter the heat pump device and come into contact with the fins in the condenser, where it will liquefy and adhere to the condenser. After long-term operation, the fins on the condenser will absorb a large amount of unfiltered dust and impurities due to the presence of grease, which will lead to a decrease in the condensation, dehumidification and heat exchange effects of the entire heat pump device, requiring operators to regularly open the heat pump device for cleaning. Therefore, in response to the above-mentioned shortcomings of existing heat pump dryers, this application designs a device that can dehumidify and remove impurities from the circulating hot air in the heat pump dryer, so that it is not affected by grease and dust impurities in the hot air during use, ensuring the long-term stable operation of the entire heat pump dryer. Summary of the Invention

[0004] The present invention aims to provide a circulating hot air dehumidification and impurity removal device in a heat pump dryer, so as to solve the shortcomings of the existing heat pump dryer in processing the circulating hot air.

[0005] The present invention is achieved through the following technical solutions:

[0006] A circulating hot air dehumidification and impurity removal device in a heat pump dryer comprises a water tank, a fin mounting housing, a condensing fin assembly, and a hot air guide. The upper half of the fin mounting housing is arc-shaped, and the lower half forms a cleaning tank. Sealed bearings are provided on the front and rear sides of the fin mounting housing. A water supply assembly is provided between the water tank and the cleaning tank, and a drainage assembly is connected to the lower end of the cleaning tank.

[0007] The condensing fin assembly includes a ring body connected to a sealed bearing, a plurality of radially arranged heat dissipating fins are arranged in an annular array between the two ring bodies, and the outer ends of the heat exchange fins are in contact with the inner wall of the upper half of the fin mounting housing, and the fin mounting housing is provided with a driving device for driving the condensing fin assembly to rotate around the sealed bearing;

[0008] The hot air deflector includes a cylinder arranged to pass through the interior of the condensing fin assembly, one end of the cylinder is sealed, and the other end is connected to an exhaust pipe. An air inlet is provided at the upper end of the cylinder located inside the fin mounting housing, and a liquid discharge port connected to the cleaning tank is provided at the lower end of the cylinder.

[0009] As a specific configuration of the above solution, the fin mounting housing is fixedly mounted on the upper surface of the water tank, and support plates for fixing the cylinder are provided on the water tank at the front and rear sides of the fin mounting housing.

[0010] As a specific setting of the above scheme, one of the outer ends of the ring body extending out of the sealed bearing is connected to a gear ring, and the driving device includes a driving motor fixed to the outer surface of the fin mounting housing, and the output shaft of the driving motor is connected to a gear meshing with the gear ring.

[0011] As a specific setting of the above scheme, one end of the exhaust pipe is connected to a conical air guide cover connected to the cylinder, and the other end is provided with a plurality of exhaust nozzles arranged at intervals, and the exhaust nozzles are arranged facing the heat exchanger in the heat pump dryer.

[0012] As a specific setting of the above solution, the water delivery component includes a water delivery pump and a water delivery pipe, and the drainage component includes a drainage pipe and a control valve.

[0013] As a further configuration of the above solution, a temperature sensor is provided inside the cleaning tank, and a refrigerator is provided inside the water tank. Both the temperature sensor and the refrigerator are electrically connected to the control system of the heat pump dryer.

[0014] As a further configuration of the above solution, the fin mounting housing is provided with an ultrasonic cleaning probe extending into the cleaning tank.

[0015] The circulating hot air dehumidification and impurity removal device in the heat pump dryer disclosed by the present invention changes the structural form of the traditional condenser. The heat dissipation fins are connected between two ring bodies in a ring array, and the two ring bodies are connected to the sealed bearings on the front and rear sides of the fin mounting casing. Then, a driving device is provided on the fin mounting casing to drive the entire condensing fin assembly to rotate.

[0016] During the operation of this device, a driving device is used to continuously rotate the condensing fin assembly inside the fin mounting housing, so that the fins located in the upper half of the fin mounting housing are in contact with the circulating hot air. The low temperature effect of the fins is used to remove water vapor, grease, and dust impurities in the circulating hot air. The hot air treated by the fins will enter the cylinder and then be discharged along the exhaust pipe. After heat exchange and temperature increase, it will be reused. As the condensing fin assembly rotates, the fins that have previously treated the hot air will be immersed in the cleaning liquid. On the one hand, the cleaning liquid can be used to cool the fins to ensure the subsequent condensation effect. On the other hand, the fins can be cleaned by the cleaning liquid to ensure the cleanliness of their surfaces.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The dehumidification and impurity removal device disclosed in the present invention can effectively liquefy the water vapor and grease in the circulating hot air when treating the circulating hot air in the heat pump dryer. At the same time, the liquefied grease can adsorb the entrained dust, so that the treated hot air has a higher purity. It can be directly put into the drying room for reuse after heat exchange and temperature increase, thereby improving the energy saving effect of the entire heat pump dryer.

[0019] The dehumidification and impurity removal device disclosed in the present invention changes the structural form of the traditional condenser, so that the condensing fin assembly rotates continuously in the casing, and the hot air is processed when the condensing fin assembly is at the upper end of the casing. The processed fins will be immersed in the cleaning liquid in the cleaning tank as they rotate. The cleaning liquid can not only cool the fins, but also clean and remove impurities attached to the surface of the fins, thereby ensuring the continuous operation of the entire device. The structural design is novel and the use effect is excellent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention from a first angle;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure from a second angle of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal planar structure of the present invention from a side view;

[0024] Figure 4 This is a schematic diagram of the main internal planar structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the fin mounting housing in the present invention;

[0026] Figure 6 Schematic diagram of the three-dimensional structure of the hot air deflector in the present invention;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the condensing fin assembly in the present invention. Implementation Method

[0028] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Figures 1 to 7 , and describes the application in detail with reference to embodiments. Example

[0030] Example 1 discloses a circulating hot air dehumidification and impurity removal device in a heat pump dryer. The dehumidification and impurity removal device is arranged inside the heat pump dryer to replace the existing hot air condenser. Figure 1 and attached Figure 2 The main body of the device includes a water tank 1, a fin mounting housing 2, a condensing fin assembly 3, and a hot air deflector 4. A mounting base 5 is provided at the lower end of the fin mounting housing 2. Connecting bolts 6 are provided at each of the four corners of the mounting base 5. The four connecting bolts 6 secure the entire fin mounting housing 2 to the upper surface of the water tank 1.

[0031] Reference Attachment Figure 5The upper half of the fin-mounting housing 2 is arc-shaped, with a hot air duct 7 located at its top. This duct connects to the return air duct (not shown) in the drying room, allowing circulating hot air from the drying room to enter the upper end of the inner cavity of the fin-mounting housing 2 through the duct 7. Circular openings are provided on both the front and rear sides of the fin-mounting housing 2, each housing a large-diameter sealed bearing 8. A cleaning tank is formed within the inner cavity of the fin-mounting housing 2 below the sealed bearing 8, which contains a large amount of cleaning liquid.

[0032] Reference Attachment Figure 3 and attached Figure 6 The condensing fin assembly 3 includes two ring bodies 301, and the two ring bodies 301 are respectively connected to the sealed bearings 8 on the front and rear sides of the fin mounting housing 2. Then, a large number of radially arranged fins 302 are connected between the two ring bodies 301, and all the fins 302 are evenly arranged in a circular array with the central axis of the ring body 301 as the center, so that a fan-shaped hot air circulation gap is formed between two adjacent fins 302. Among them, the fins 302 in the upper half of the condensing fin assembly 3 are in contact with the inner wall of the upper half of the fin mounting housing 2 to prevent hot air from flowing through the gap between the outer end of the fin 302 and the inner wall of the fin mounting housing 2, and the fins 302 in the lower half can extend into the cleaning liquid in the cleaning tank. At the same time, a gear ring 303 is welded to the outer end of one of the ring bodies 301 extending out of the sealed bearing 8, and then a drive motor 9 is fixedly installed on the fin mounting housing 2, and a gear 901 meshing with the gear ring 303 is provided on the output shaft of the drive motor 9. Through the power input of the drive motor 9, and then under the meshing transmission of the gear 901 and the gear ring 303, the entire condensing fin assembly 3 can rotate around the sealed bearing 8 inside the condensing fin assembly 3.

[0033] Reference Attachment Figure 4 and attached Figure 7 The hot air deflector 4 includes a cylinder 401 that extends through the condensing fin assembly 3, with the outer surface of the cylinder 401 fitting against the inner ends of the fins 302. One end of the cylinder 401 is sealed, and the other end is connected to a conical deflector 402. An exhaust pipe 403 is connected to the conical deflector 402. Multiple exhaust nozzles 404 are spaced apart at the end of the exhaust pipe 403. These exhaust nozzles 404 are positioned directly opposite the heat exchanger within the heat pump dryer, allowing the hot air discharged from the exhaust nozzles 404 to be heated by the heat exchanger and then re-entered into the drying room for use.

[0034] In order to fix the guide member 4, a support frame plate 10 for fixing the cylinder 401 is also provided on the water tank 1 on the front and rear sides of the fin mounting casing 2, and then an air inlet 405 is opened at the upper end of the cylinder 401 located inside the condensing fin assembly 3, and a plurality of drain ports 406 are opened at the lower end of the cylinder 401 directly below the air inlet 405, so that the condensed water cooled by the condensing fin assembly 3 can drip into the cylinder 401, and then drip into the cleaning tank from the drain port 406.

[0035] Reference Attachment Figure 1 and attached Figure 2 Finally, a water pump 11 is fixedly mounted on water tank 1. The liquid inlet of water pump 11 is connected to the inner cavity of water tank 1. The liquid outlet of water pump 11 is connected to a water supply pipe 12, which is connected to the lower end of fin mounting housing 2. A drain pipe 13 is also connected to the lower end of fin mounting housing 2, and a corresponding control valve 14 is installed on drain pipe 13. When the cleaning liquid in the cleaning tank needs to be replaced, control valve 14 is opened to drain the cleaning liquid from the cleaning tank out of the heat pump dryer. Then, water pump 11 is started to deliver the spare cleaning liquid in water tank 1 to the cleaning tank.

[0036] When the dehumidification and impurity removal device disclosed in this embodiment 1 processes the circulating hot air in the heat pump dryer, it is connected to the return air duct on the drying room through the hot air channel 7, so that the circulating hot air in the drying room can enter the top of the fin mounting housing 2 through the hot air channel 7, and then the hot air mixed with water vapor, grease and a small amount of dust will pass through the gap between two adjacent fins 302, and under the action of the low temperature of the fins 302, the water vapor and grease will be liquefied and attached to the surface of the fin 302. At the same time, the dust will also be adsorbed due to the action of the grease.

[0037] After condensation, dehumidification, and impurities removal by fins 302, the hot air enters cylinder 401 through air inlet 405. It is then directed by exhaust pipe 403 and discharged from exhaust nozzle 404. The exhausted hot air is then heated by the heat exchanger inside the heat pump dryer. The heated air then re-enters the drying room to dry the goods. Simultaneously, most of the water and grease liquefied by fins 302 drips into cylinder 401 through air inlet 405 and then into the cleaning tank through drain port 406 at the bottom of cylinder 401.

[0038] Since the condensing fin assembly 3 in this device rotates continuously under the action of the driving motor 9, when impurities are attached to the surface of the top fin 302 or the temperature rises, it will enter the cleaning liquid in the cleaning tank during the rotation process. While the cleaning liquid cools the fin 302, the oil and impurities on the surface of the fin 302 can also be cleaned by the flushing effect of the cleaning liquid, ensuring that the entire condensing fin assembly 3 can always maintain a good dehumidification and impurity removal effect on the circulating hot air during operation. Example

[0039] Example 2 discloses a circulating hot air dehumidification and impurity removal device in a heat pump dryer further optimized based on Example 1. The similarities between Example 2 and Example 1 are not enough to be described again. The differences are as follows:

[0040] Reference Attachment Figure 3 and attached Figure 4 In this embodiment 2, a temperature sensor 15 is further provided in the cleaning tank, and an ultrasonic cleaning probe 16 extending into the cleaning tank is provided at the lower end of the outer surface of the fin mounting housing 2, and the temperature sensor 15 and the ultrasonic cleaning probe 16 are electrically connected to the control system of the heat pump dryer.

[0041] In addition, a refrigerator 17 is provided on the bottom wall of the water tank 1. The refrigerator 17 can be a semiconductor refrigerator. The refrigerator 17 is also electrically connected to the control system of the heat pump dryer.

[0042] In this second embodiment, the temperature of the water in the cleaning tank is controlled by a temperature sensor 15. When the temperature of the cleaning liquid exceeds the set temperature, the cleaning liquid needs to be replaced. At the same time, the cleaning liquid in the water tank 1 is cooled by a refrigerator 17, so that the cleaning liquid entering the cleaning tank has a lower temperature, ensuring a cooling effect on the fins 302. In addition, after the lower half of the condensing fin assembly 3 is inserted into the cleaning tank, the ultrasonic cleaning probe 16 can be activated to improve the cleaning effect of the cleaning liquid on the oil and impurities on the surface of the fins 302.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A circulating hot air dehumidification and impurity removal device in a heat pump dryer, characterized in that: The condenser comprises a water tank, a fin mounting housing, a condensing fin assembly, and a hot air deflector. The upper half of the fin mounting housing is arc-shaped, and the lower half forms a cleaning tank. The front and rear sides of the fin mounting housing are both provided with sealed bearings. A water supply assembly is provided between the water tank and the cleaning tank, and a drainage assembly is connected to the lower end of the cleaning tank. The condensing fin assembly includes a ring body connected to a sealed bearing, a plurality of radially arranged heat dissipating fins are arranged in an annular array between the two ring bodies, and the outer ends of the heat exchange fins are in contact with the inner wall of the upper half of the fin mounting housing, and the fin mounting housing is provided with a driving device for driving the condensing fin assembly to rotate around the sealed bearing; The hot air deflector includes a cylinder arranged to pass through the interior of the condensing fin assembly, one end of the cylinder is sealed, and the other end is connected to an exhaust pipe. An air inlet is provided at the upper end of the cylinder located inside the fin mounting housing, and a liquid discharge port connected to the cleaning tank is provided at the lower end of the cylinder.

2. The circulating hot air dehumidification and impurity removal device in the heat pump dryer according to claim 1, characterized in that: The fin mounting housing is fixedly mounted on the upper surface of the water tank, and support plates for fixing the cylinder are provided on the water tank at the front and rear sides of the fin mounting housing.

3. The circulating hot air dehumidification and impurity removal device in the heat pump dryer according to claim 1, characterized in that: The outer end of one of the ring bodies extending out of the sealed bearing is connected to a gear ring, and the driving device includes a driving motor fixed to the outer surface of the fin mounting housing, and the output shaft of the driving motor is connected to a gear meshing with the gear ring.

4. The circulating hot air dehumidification and impurity removal device in a heat pump dryer according to claim 1, characterized in that: One end of the exhaust pipe is connected to a conical air guide cover connected to the cylinder, and the other end is provided with a plurality of exhaust nozzles arranged at intervals, and the exhaust nozzles are arranged facing the heat exchanger in the heat pump dryer.

5. The circulating hot air dehumidification and impurity removal device in the heat pump dryer according to claim 1, characterized in that: The water delivery component includes a water delivery pump and a water delivery pipe, and the drainage component includes a drainage pipe and a control valve.

6. The circulating hot air dehumidification and impurity removal device in a heat pump dryer according to claim 1, characterized in that: A temperature sensor is provided inside the cleaning tank, a refrigerator is provided inside the water tank, and both the temperature sensor and the refrigerator are electrically connected to the control system of the heat pump dryer.

7. The circulating hot air dehumidification and impurity removal device in a heat pump dryer according to claim 1, characterized in that: The fin mounting housing is provided with an ultrasonic cleaning probe which extends into the cleaning tank.

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