Heat exchange system of double-air-duct pet drying box

Abstract

The utility model relates to a heat exchange system of a double-air-duct pet drying box, and belongs to the technical field of pet drying equipment. Comprising a box body and a refrigerating system, a front air supply device and a rear air supply device are arranged at the top of an inner cavity of the box body, the front air supply device comprises a front volute, a front cross-flow wind wheel and a first motor used for driving the front cross-flow wind wheel, and the rear air supply device comprises a rear volute, a rear cross-flow wind wheel and a second motor used for driving the rear cross-flow wind wheel. The front volute is provided with a front air outlet and a front air inlet, the rear volute is provided with a rear air outlet and a rear air inlet, an air guide plate is arranged at the position corresponding to the rear air inlet, the lower end of the air guide plate extends to the position above the inner bottom face of the box body, and an air inlet duct inner cavity is formed between the air guide plate and the back face of the box body. The system improves the drying efficiency and the heat energy utilization rate, avoids hair burning peculiar smell, and meets the efficient and safe requirements of pet drying.

Description

Technical Field

[0001] This utility model relates to the field of pet drying box technology, specifically to a heat exchange system for a dual-air duct pet drying box. Background Technology

[0002] A pet drying box is a device used to dry the fur of pets after bathing and grooming. Based on the type of fan, they can be divided into ordinary fan type, axial flow fan type, turbine fan type, direct exhaust fan type, and hybrid type. The purpose of using a pet drying box is twofold: firstly, to save labor, as the entire process of drying the pet's fur is completed by machine, eliminating the need for manual drying with a water dryer or hair dryer. This saves labor and reduces the noise of water dryers.

[0003] For example, the application number of an invention application is: CN202410106457.4. This invention relates to a pet drying box with air purification function in the field of pet supplies technology. It includes a casing, an air supply assembly and a heating plate. The air supply assembly is located at the rear end of the drying chamber, and the heating plate is located inside the heating chamber. The air supply assembly is connected to the drying chamber through the heating chamber. A purification exhaust port is provided above the air supply assembly. The air supply assembly includes a volute and a blower assembly located inside. A flow channel switching mechanism is provided on the side of the volute near the purification exhaust port. The first flow channel and the second flow channel are connected or blocked by the flow channel switching mechanism. The structure also has shortcomings: the air supply unit blows air from the bottom of the chassis and through the heating plate, which affects the air intake to some extent, thus affecting the drying effect; in addition, the air blower only targets the bottom of the pet, failing to dry the fur on the pet's back and head, reducing the overall drying effect; furthermore, after the pet is washed, there are still many water droplets on its body, and during the air blower process, the water vapor remains inside the chassis and is repeatedly blown back onto the pet, further reducing the drying effect.

[0004] For example, application number CN202311096801.8 discloses a pet drying box air outlet structure and a pet drying box. The pet drying box air outlet structure includes a drying box body, a volute fan, and a heating structure. The drying box body has a hot air outlet chamber, a guide chamber, and a pet holding chamber connected in sequence. The volute fan and the heating structure are both installed in the hot air outlet chamber, with the heating structure installed downstream of the volute fan. The guide chamber and the hot air outlet chamber are connected by a ventilation plate. After the volute fan generates air, the heating structure raises the air temperature, forming hot air. The hot air enters the guide chamber through the ventilation plate and flows to the pet holding chamber to dry the pet. However, this design has some drawbacks: the volute fan draws air from inside the drying box body, which can easily cause pet hair to fall onto the heating structure, potentially burning the hair and producing an odor; additionally, the close proximity of the volute and the volute fan can easily cause hair to clog the airflow, affecting air circulation. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a heat exchange system for a dual-airflow pet drying box, which can improve drying efficiency and prevent odor generation.

[0006] This utility model also provides a heat exchange system for a dual-air duct pet drying box, including a box body and a refrigeration system. The top of the inner cavity of the box body is provided with a front air supply device and a rear air supply device. The front air supply device includes a front volute, a front cross-flow impeller and a first motor for driving the front cross-flow impeller. The rear air supply device includes a rear volute, a rear cross-flow impeller and a second motor for driving the rear cross-flow impeller. The front volute is provided with a front exhaust port and a front air inlet. The rear volute is provided with a rear exhaust port and a rear air inlet. A guide plate is provided at the corresponding position of the rear air inlet. The lower end of the guide plate extends to the top of the bottom surface of the box body. An air inlet duct cavity is formed between the guide plate and the back of the box body.

[0007] The refrigeration system includes a compressor, a condenser, a throttling device, and an evaporative heat exchanger. The evaporative heat exchanger is located inside the air inlet duct and includes an evaporating plate and an evaporating tube, with the evaporating tube mounted on the evaporating plate.

[0008] It also includes a heating device, which is disposed above the evaporative heat exchange device.

[0009] Specifically, the heating device is a graphene heater or a PCT heating tube.

[0010] Specifically, the air guide plate and the rear air inlet are connected by an inclined plate.

[0011] Specifically, the air guide plate and the inclined plate are connected by an arc-shaped plate.

[0012] Specifically, the front air vent is equipped with a front air guide plate, and the rear air vent is equipped with a rear air guide plate.

[0013] Furthermore, the air inlet is also equipped with a grille, and a filter screen is installed inside the grille. The air guide plate is connected to the inner side wall of the housing via an angle bracket.

[0014] Specifically, the bottom surface of the box is provided with a bottom plate, and an air inlet gap is provided between the air guide plate and the bottom plate.

[0015] Specifically, the evaporation plate is provided with a plurality of evaporation plate bosses, and the evaporation plate bosses are provided with installation gaps for installing evaporation tubes.

[0016] Furthermore, an evaporator plate recess is provided between the evaporator plate boss and the adjacent evaporator plate boss.

[0017] The beneficial effects of this utility model are as follows.

[0018] 1. The grille and filter installed at the front air inlet effectively intercept pet hair, preventing it from entering the front volute and significantly reducing the impact of hair blockage on airflow.

[0019] 2. The air intake duct formed by the air guide plate and the back of the box, combined with the bottom-up airflow design, enhances airflow efficiency and increases air intake volume; the front and rear air vents work together with a movable hinge structure to achieve multi-angle air delivery, ensuring that hot air evenly covers the pet's entire body (including the back and head), improving drying uniformity and optimizing the airflow circulation path.

[0020] 3. The evaporator plate has a raised and recessed structure, which increases the contact area between the evaporator tube and the airflow.

[0021] Fourth, the evaporative heat exchanger is installed in the air inlet duct to quickly expel hot and humid air, preventing water vapor from circulating and lingering in the chamber and reducing stuffiness inside the chamber; at the same time, the heating element is designed in the air inlet duct and located above the evaporative heat exchanger to reduce the likelihood of hair adhering to the heating element, preventing hair from burning and producing odor, thus optimizing odor control and heat dissipation. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings.

[0023] Figure 1 This is a cross-sectional view of the structure of this utility model.

[0024] Figure 2 yes Figure 1 A magnified schematic diagram of the structure at point A.

[0025] Figure 3 This is a schematic diagram of the connection structure between the front volute, the rear volute, and the air guide plate.

[0026] Figure 4 yes Figure 3 A schematic diagram of the disassembled structure.

[0027] Figure 5 yes Figure 1 A schematic diagram of the disassembled structure.

[0028] Figure 6 yes Figure 5 Another structural diagram.

[0029] Figure 7 This is a schematic diagram of the connection between the evaporator tube and the evaporator plate.

[0030] Figure 8 This is a schematic diagram of the evaporator plate structure.

[0031] Figure 9 This is a schematic diagram of the connection structure of the compressor, condenser, throttling device, and evaporative heat exchanger.

[0032] Figure 10 This is a schematic diagram of the airflow of hot air received by the pet inside the enclosure in this embodiment.

[0033] As shown in the attached diagram, the components are labeled as follows: 1. Housing; 2. Front volute; 4. Front cross-flow fan; 401. First motor; 3. Rear volute; 5. Rear cross-flow fan; 501. Second motor; 101. Front exhaust vent; 103. Front exhaust vent; 102. Rear air inlet; 105. Air guide plate; 12. Inlet air duct cavity; 15. Compressor; 8. Condenser; 801. Throttling device; 13. Evaporation heat exchanger; 1301. Evaporation tube; 130. 2. Graphene heater 1101, PCT heating tube 1102, inclined plate 1002, arc plate 1001, front air guide plate 106, rear air guide plate 104, grille 901, filter screen 9, corner bracket 1003, base plate 14, air inlet gap 1401, evaporator plate boss 1303, installation gap 1305, evaporator plate recess 1304, exhaust gas cross-flow fan 6, exhaust gas cross-flow fan 601, exhaust volute 7. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0035] The following is for reference. Figures 1 to 9This invention describes a heat exchange system for a dual-air duct pet drying box according to an embodiment of the present invention, comprising a box body 1 and a refrigeration system. The top of the inner cavity of the box body 1 is respectively provided with a front air supply device and a rear air supply device. The front air supply device includes a front volute 2, a front cross-flow impeller 4, and a first motor 401 for driving the front cross-flow impeller 4. The rear air supply device includes a rear volute 3, a rear cross-flow impeller 5, and a second motor 501 for driving the rear cross-flow impeller 5. The front volute 2 is respectively provided with a front exhaust port 101 and a front air inlet 103. The rear volute 3 is respectively provided with a rear exhaust port 102 and a rear air inlet 105. A guide plate 10 is provided at the corresponding position of the rear air inlet 105. The lower end of the guide plate 10 extends above the inner bottom surface of the box body 1, and an air inlet duct cavity 12 is formed between the guide plate 10 and the back of the box body 1. The rear air inlet 105 communicates with the air inlet duct cavity 12. Figure 9 As shown, the refrigeration system includes a compressor 15, a condenser 8, a throttling device 801, and an evaporative heat exchanger 13. The evaporative heat exchanger 13 is disposed within the inner cavity 12 of the air inlet duct, as shown. Figure 7 and Figure 8 As shown, the evaporation heat exchange device 13 includes an evaporation plate 1302 and an evaporation tube 1301, with the evaporation tube 1301 mounted on the evaporation plate 1302;

[0036] It also includes a heating device, which is located above the evaporative heat exchange device 13. This design helps to reduce the likelihood of hair adhering to the heating device and prevents the hair from burning and producing an odor.

[0037] The working principle of this utility model is as follows: Figure 1 and Figure 10 As shown, air enters the air inlet duct through the air inlet gap 1401 between the base plate 14 and the air guide plate 10, flowing from bottom to top. It passes through the evaporative heat exchanger 13 for dehumidification and the heating device for heating. The second motor 501 drives the rear cross-flow fan 5 to circulate the air, blowing the heated air from the rear exhaust vent 102 into the housing 1. Most of the hot air dries the pet's upper body or the fur on one side of the pet. Figure 1 As shown, hot air from inside the enclosure enters the front volute 2 through the front air inlet 103. The first motor 401 inside the front volute 2 drives the front cross-flow fan 4 to circulate the air, expelling the hot air from the enclosure through the front exhaust vent 101, thus drying the fur on the other side of the pet. More specifically, this embodiment achieves a dual-channel airflow effect by combining the front cross-flow fan 4, the first motor 401, the rear cross-flow fan 5, and the second motor 501. That is, the hot air exhausted from the front exhaust vent 101 collides with the hot air exhausted from the rear exhaust vent 102, causing cross-flow of hot air inside the enclosure, especially the hot air exhausted from the front exhaust vent 101. Figure 1The diagram illustrates the airflow direction of the front exhaust vent 101. Part of the airflow blows onto the pet's upper body or the fur on one side, while another part blows onto the left side of the inner wall of the enclosure. The airflow directed towards the left side of the inner wall is blocked, and some of the airflow will then reach the pet's lower body and the fur under its four armpits, further drying the pet's fur. Similarly, the rear exhaust vent 102 discharges hot air... Figure 1 The rear air vent 102 shows the airflow direction of the hot air. Part of the air blows onto the pet's upper body or the fur on the other side of the pet, while another part blows onto the right side of the inner wall of the box. The air that blows onto the right side of the inner wall of the box is blocked back, and some of the air will blow onto the pet's lower body and the fur under the pet's four armpits, further drying the pet's fur and achieving a 360-degree drying effect for the pet's fur.

[0038] like Figure 1 As shown, hot air blows onto the pet inside the enclosure. Since the pet has just been bathed and its fur is still wet, if only the hot air dries the moisture, a large amount of water vapor will be generated, making the enclosure stuffy and humid. This "stuffy and humid" phenomenon should be understood as hot and humid air circulating inside the enclosure for a long time, which will make the pet restless. To solve this problem, this embodiment also adds a device that injects heated air into the enclosure while simultaneously dehumidifying it. That is, it adds a refrigeration system that dehumidifies the heated air. The hot and humid air is cooled at the evaporative heat exchanger 13, and the moisture condenses and is discharged, drying the moisture in the hot and humid air. It is then reheated by the heating device and reused. In addition, when the evaporative heat exchanger 13 is in cooling mode, water droplets form on the surface of the evaporative heat exchanger 13, which can carry away the hair and dust adhering to the evaporator tube 1301.

[0039] like Figure 4 As shown, the heating device is a graphene heater 1101, or as... Figure 5 The PCT heating element 1102 is shown. The graphene heater 1101 is a single-layer two-dimensional crystalline material composed of carbon atoms, which has extremely high electrical and thermal conductivity. It can quickly transfer heat to the surrounding environment, thereby achieving uniform heating. In other words, when the air in the box enters through the gap 1401 and is dehumidified by the evaporative heat exchange device 13, it can uniformly exchange heat with the heat emitted by the graphene heater 1101, effectively improving the heat exchange effect.

[0040] like Figure 1 and Figure 3 As shown, the air guide plate 10 and the rear air inlet 105 are connected by an inclined plate 1002. The air guide plate 10 and the inclined plate 1002 are connected by an arc-shaped plate 1001. The air guide plate 10, the inclined plate 1002 and the rear air inlet 105 are integrally formed, wherein the arc-shaped plate 1001 serves as a transition, forming a smooth airflow and further reducing noise.

[0041] The front air vent 103 is also equipped with a grille 901, and a filter 9 is installed inside the grille 901. The grille 901 is detachable, making it easy to clean the pet hair it traps. The filter 9 has a multi-layer metal mesh structure with a pore size of less than 1mm, which can effectively block fine hair and dust, preventing them from entering the front volute 2 and reducing airflow. However, this also causes pet hair to stick to the front cross-flow fan 4, increasing the difficulty of cleaning. The filter 9 is installed close to the inlet of the front air vent 103, ensuring that the airflow is filtered before entering the front volute 2 and implementing circulating airflow within the housing 1.

[0042] like Figure 1 , Figure 2 and Figure 3 As shown, the front exhaust vent 101 is equipped with a front air guide plate 106, and the rear exhaust vent 102 is equipped with a rear air guide plate 104. The front air guide plate 106 and the rear air guide plate 104 adjust the air delivery angle. In this embodiment, the front air guide plate 106 is tilted to the left, so that the hot air discharged from the front exhaust vent 101 can be blown to the left side or even the left inner wall of the box, so that the hot air is blown to the left side of the inner wall of the box, and the air blown to the left side of the inner wall of the box is blocked and flows back into the box; similarly. The rear air guide plate 104 is tilted to the right, which facilitates the hot air discharged from the rear exhaust port 102 to be blown to the right side and even the right side inner wall of the box. The hot air is blown to the right side of the inner wall of the box, and the air blown to the right side of the inner wall of the box is blocked and flows back into the box. Specifically, the rear air inlet 105 is connected to the inner cavity of the air inlet duct 12. Under the action of the rear cross-flow fan 5, the air in the box enters the inner cavity of the air inlet duct 12 from the air inlet gap 1401, and passes through the evaporation heat exchange device 13 and the heating element in sequence. The device has a rear air inlet 105 and a rear air outlet 102, forming an internal circulation. In this embodiment, after the pet is bathed, it enters the enclosure, the door is closed, and the rear air supply device is activated simultaneously with the heating device. When the air inside the enclosure is heated to 38-40 degrees Celsius and the relative humidity is greater than 60%, the cooling system is activated, and the front air supply device is activated to increase the airflow, so that the hot air is blown to different parts of the pet's body. In this embodiment, when the rear air supply device is activated, under the action of the rear air guide plate 104, some of the hot air is blown to the upper body or the fur on the right side of the pet, and some of the hot air is blown to the right side of the inner wall of the enclosure. The hot air blown to the right side of the inner wall of the enclosure is blocked and flows back into the enclosure. Some of the hot air will blow to the lower body and the fur under the four armpits of the pet, further drying the pet's fur. However, the drying effect on the other side (i.e., the left side) of the pet is not good. To solve the above shortcomings, after the front air supply device is turned on, if... Figure 1 and Figure 10As shown, the airflow direction of the hot air from the front air vent 101 is illustrated. Part of the hot air blows onto the pet's upper body or the fur on the left side of the pet's body, while another part of the hot air blows onto the left side of the inner wall of the box. The hot air that blows onto the left side of the inner wall of the box is blocked and flows back into the box. Some of the hot air will blow onto the pet's lower body and the fur under the pet's four armpits, further drying the pet's fur and achieving a 360-degree effect of drying the pet's fur without dead angles. Of course, for those skilled in the art, in order to achieve all-round coverage of hot air, increase the amount of hot air blown onto the pet, and further achieve a 360-degree hot air blowing pattern to further accelerate the drying of pet fur, the front air guide plate 106 is hinged to the front air outlet 101. That is, the front air guide plate 106 is driven by a stepper motor to swing left and right in front air outlet 101, thereby changing the direction of the hot air discharged from front air outlet 101. Similarly, the rear air guide plate 104 is hinged to the rear air outlet 102. That is, the rear air outlet 102 is driven by a stepper motor to swing left and right in rear air outlet 102, thereby changing the direction of the hot air discharged from rear air outlet 102.

[0043] like Figure 5 As shown, in order to strengthen the fixation of the air guide plate 10, the air guide plate 10 is connected to the inner side wall of the box 1 by a corner bracket 1003 to ensure structural stability.

[0044] like Figure 1 and Figure 2 As shown, a bottom plate 14 is provided on the bottom surface of the box 1, and an air inlet gap 1401 is provided between the air guide plate 10 and the bottom plate 14. More specifically, an air inlet gap 1401 is left between the lower end of the air guide plate 10 and the bottom plate 14 provided on the bottom surface of the box 1, which is used to allow air inside the box to enter the air inlet duct cavity 12 through the gap 1401. This design enhances the air intake efficiency through the airflow direction from bottom to top. Specifically, under the combined action of the front air supply device and the rear air supply device, hot air inside the box enters through the air inlet gap 1401.

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, the evaporator plate 1302 is provided with a plurality of evaporator plate bosses 1303, each evaporator plate boss 1303 having an installation gap 1305 for installing the evaporator tube 1301, and an evaporator plate recess 1304 being provided between each evaporator plate boss 1303 and an adjacent evaporator plate boss 1303. Figure 7 and Figure 8As shown, the surface of the evaporator plate 1302 is provided with a plurality of evaporator plate protrusions 1301 arranged at equal intervals. The evaporator plate protrusions 1303 are provided with mounting gaps 1305 for mounting the evaporator tubes 1301. The evaporator tubes 1301 are embedded in the mounting gaps 1305 and fixed on the mounting gaps 1305. Specifically, an evaporator tube 1301 with the same outer diameter as the mounting gap 1305 is embedded in the evaporator tube 1301, and then the evaporator tube 1301 is fixed to the mounting gap 1305 by welding. For those skilled in the art, it should be clear that the welding method is not limited to the above-described welding method. To enhance the heat exchange effect of the evaporative heat exchange device 13, an evaporative plate concave block 1304 is provided between the evaporative plate protrusion 1303 and the adjacent evaporative plate protrusion. The addition of the evaporative plate concave block 1304 effectively increases the heat exchange area of ​​the evaporative plate 1302. At the same time, the structure of the evaporative plate protrusion 1303 and the evaporative plate concave block 1304, which can disrupt the airflow, further increases the heat exchange time between the air in the inner cavity 12 of the air inlet duct and the evaporative heat exchange device 13, that is, further increases the heat exchange effect, that is, further dehumidifies the hot and humid air in the box, dries the circulating air in the box, and improves the effect of drying pet hair.

[0046] The refrigeration system described in this embodiment includes a compressor 15, a condenser 8, a throttling device 801, and an evaporative heat exchange device 13. To achieve a better heat exchange effect on the condenser 8, the condenser 8 is also provided with an exhaust volute 7, an exhaust gas cross-flow impeller 6, and an exhaust gas cross-flow fan 601 for driving the exhaust gas cross-flow impeller 6. The specific refrigeration principle is prior art and will not be described in detail in this specification.

Claims

1. A heat exchange system for a dual-airflow pet drying box, comprising a box body (1) and a refrigeration system, characterized in that, The top of the inner cavity of the housing (1) is provided with a front air supply device and a rear air supply device. The front air supply device includes a front volute (2), a front cross-flow impeller (4) and a first motor (401) for driving the front cross-flow impeller (4). The rear air supply device includes a rear volute (3), a rear cross-flow impeller (5) and a second motor (501) for driving the rear cross-flow impeller (5). The front volute (2) is provided with a front exhaust port (101) and a front air inlet (103). The rear volute (3) is provided with a rear exhaust port (102) and a rear air inlet (105). A guide plate (10) is provided at the corresponding position of the rear air inlet (105). The lower end of the guide plate (10) extends to the top of the inner bottom surface of the housing (1). An air inlet duct cavity (12) is formed between the guide plate (10) and the back of the housing (1). The refrigeration system includes a compressor (15), a condenser (8), a throttling device (801), and an evaporative heat exchange device (13). The evaporative heat exchange device (13) is located inside the air inlet duct cavity (12). The evaporative heat exchange device (13) includes an evaporating plate (1302) and an evaporating tube (1301). The evaporating tube (1301) is installed on the evaporating plate (1302). It also includes a heating device, which is disposed above the evaporative heat exchange device (13).

2. The heat exchange system of a dual-air duct pet drying oven according to claim 1, characterized in that, The heating device is a graphene heater (1101) or a PCT heating tube (1102).

3. The heat exchange system of a dual-air duct pet drying oven according to claim 1, characterized in that, The air guide plate (10) and the rear air inlet (105) are connected by an inclined plate (1002).

4. The heat exchange system of a dual-air duct pet drying oven according to claim 2, characterized in that, The air guide plate (10) and the inclined plate (1002) are connected by an arc plate (1001).

5. The heat exchange system of a dual-air duct pet drying oven according to claim 1, characterized in that, The front air vent (101) is provided with a front air guide plate (106), and the rear air vent (102) is provided with a rear air guide plate (104).

6. The heat exchange system of a dual-air duct pet drying oven according to claim 1, characterized in that, The front air inlet (103) is also provided with a grille (901), and a filter screen (9) is provided inside the grille (901). The air guide plate (10) is connected to the inner side wall of the box (1) by a corner bracket (1003).

7. The heat exchange system of a dual-air duct pet drying oven according to claim 1, characterized in that, The bottom surface of the box (1) is provided with a bottom plate (14), and an air inlet gap (1401) is provided between the air guide plate (10) and the bottom plate (14).

8. The heat exchange system of a dual-air duct pet drying oven according to claim 1, characterized in that, The evaporation plate (1302) is provided with a plurality of evaporation plate bosses (1303), and the evaporation plate bosses (1303) are provided with installation gaps (1305) for installing evaporation tubes (1301).

9. The heat exchange system of a dual-air duct pet drying oven according to claim 8, characterized in that, An evaporator plate recess (1304) is provided between the evaporator plate boss (1303) and the adjacent evaporator plate boss (1303).

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