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

Abstract

The invention 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] The present invention relates to the technical field of pet drying boxes, and particularly relates to a heat exchange system of a double-air duct pet drying box. Background Art

[0002] A pet drying box is a device for drying the hair of pets after bathing and grooming. Classified by the type of fan, it can be divided into ordinary fan blade type, axial flow fan type, turbo fan type, direct exhaust fan type, and hybrid type. The purpose of using a pet drying box is, on the one hand, to save manpower. The entire process of drying the pet's fur is completed by the machine, saving the process of using a water blower or a hair dryer to dry the pet's fur. It not only saves labor but also reduces the noise during the operation of the water blower.

[0003] For example: The application number of an invention application is: CN202410106457.4. The present invention relates to a pet drying box with an air purification function in the technical field of pet supplies, including a chassis, a air supply assembly, and a heating plate. The air supply assembly is arranged at the rear end of the drying chamber, and the heating plate is arranged inside the heating chamber. The air supply assembly is conductively 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 arranged inside. A flow channel switching mechanism is provided on one side of the volute close to the purification exhaust port. A conductive or blocking structure is formed between the first flow channel and the second flow channel through the flow channel switching mechanism. This structure still has deficiencies: The blowing direction of the air supply assembly enters from the bottom surface of the chassis and passes through the heating plate, which to a certain extent affects the air intake volume and thus the drying effect; in addition, the blowing only targets the lower part of the pet and cannot take into account the hair on the back and head of the pet for drying, reducing the overall drying effect. Moreover, after the pet is washed, there are still a lot of water droplets on the body. During the blowing process, water vapor still stays in the chassis and is blown back to the pet repeatedly, further reducing the drying effect.

[0004] For another example, the application number of an invention application is: CN202311096801.8. The present invention provides an air outlet structure for a pet drying box and a pet drying box. The air outlet structure of the pet drying box includes a drying box main body, a volute fan, and a heating structure; the drying box main body is provided with a hot air outlet cavity, a wind guiding cavity, and a pet accommodation cavity that are connected in sequence; the volute fan and the heating structure are both installed in the hot air outlet cavity, and the heating structure is installed downstream of the volute fan; the wind guiding cavity is communicated with the hot air outlet cavity through a ventilation plate; after the volute fan generates wind, the heating structure is used to raise the temperature of the wind to form hot air. After the hot air enters the wind guiding cavity from the ventilation plate, through the guiding action of the wind guiding plate, it flows to the pet accommodation cavity to dry the pet. There are deficiencies in use: the volute fan sucks the air in the drying box main body, and it is easy to drop the pet's hair on the heating structure, which is easy to cause the hair to burn and produce peculiar smell; in addition, the distance between the volute and the volute fan is very close, and it is easy to be blocked by hair and affect the air flow. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the present invention is to provide a heat exchange system for a double-air duct pet drying box, which can improve the drying effect and avoid the generation of peculiar smell.

[0006] The present invention also provides a heat exchange system for a double-air duct pet drying box, which includes a box body and a refrigeration system. The inner cavity top of the box body is respectively 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 air wheel, and a first motor for driving the front cross-flow air wheel. The rear air supply device includes a rear volute, a rear cross-flow air wheel, and a second motor for driving the rear cross-flow air wheel. The front volute is respectively provided with a front air outlet and a front air inlet. The rear volute is respectively provided with a rear air outlet and a rear air inlet. A wind guiding plate is provided at the corresponding position of the rear air inlet. The lower end of the wind guiding plate extends above the inner bottom surface of the box body. An air inlet duct inner cavity is formed between the wind guiding plate and the back surface of the box body; The refrigeration system includes a compressor, a condenser, a throttling device, and an evaporation heat exchange device. The evaporation heat exchange device is arranged in the air inlet duct inner cavity. The evaporation heat exchange device includes an evaporation plate and evaporation tubes. The evaporation tubes are installed on the evaporation plate; It also includes a heating device, and the heating device is arranged above the evaporation heat exchange device.

[0007] Specifically further, the heating device is a graphene heater or a PCT heating tube.

[0008] Specifically further, the wind guiding plate and the rear air inlet are connected by an inclined plate.

[0009] Specifically further, the wind guiding plate and the inclined plate are connected by an arc-shaped plate.

[0010] Specifically further, a front guide vane is provided at the front air outlet, and a rear guide vane is provided at the rear air outlet.

[0011] Specifically further, a grille is also provided on the front air inlet, a filter screen is provided inside the grille, and the guide vane is connected to the inner side wall of the box body through an angle code.

[0012] Specifically further, a bottom plate is provided on the bottom surface of the box body, and an air inlet gap is provided between the guide vane and the bottom plate.

[0013] Specifically further, 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 pipes.

[0014] Specifically further, an evaporation plate recess is provided between the evaporation plate bosses and adjacent evaporation plate bosses.

[0015] The beneficial effects of the present invention are as follows.

[0016] First, through the grille and filter screen provided at the front air inlet, pet hair is effectively intercepted to prevent it from entering the front volute, significantly reducing the exhaust effect caused by hair blockage.

[0017] Second, the air inlet duct formed by the guide vane and the back of the box body, combined with the design of the air flow direction from bottom to top, enhances the air flow efficiency and increases the air inlet volume; the front air outlet and the rear air outlet cooperate with the movable hinge structure to achieve multi-angle air supply, ensuring that the hot air evenly covers the whole body of the pet (including the back and head), improving the drying uniformity, and optimizing the air flow circulation path.

[0018] Third, the evaporation plate bosses and recess structures provided on the evaporation plate increase the contact area between the evaporation pipes and the air flow.

[0019] Fourth, the evaporation heat exchange device is arranged in the air inlet duct to quickly discharge the humid and hot air, avoiding the circulation and retention of water vapor in the box body, reducing the stuffy and humid phenomenon in the box; at the same time, the heating device is designed in the air inlet duct and above the evaporation heat exchange device, reducing the possibility of hair attaching to the heating device, preventing the hair from burning and generating peculiar smell, and controlling the peculiar smell and optimizing the heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings.

[0021] Figure 1 It is a schematic cross-sectional view of the structure of the present invention.

[0022] Figure 2 It is Figure 1 a partial enlarged structural schematic view of part A of

[0023] Figure 3It is a schematic structural diagram of the connection of the front volute, rear volute and air deflector.

[0024] Figure 4 It is Figure 3 schematic structural diagram of the disassembled state.

[0025] Figure 5 It is Figure 1 schematic structural diagram of the disassembled state.

[0026] Figure 6 It is Figure 5 another schematic structural diagram.

[0027] Figure 7 It is a schematic structural diagram of the connection of the evaporation tube and the evaporation plate.

[0028] Figure 8 It is a schematic structural diagram of the evaporation plate.

[0029] Figure 9 It is a schematic structural diagram of the connection of the compressor, condenser, throttling device and evaporation heat exchange device.

[0030] Figure 10 It is a schematic diagram of the air flow of the hot air received by the pet when it is in the box of this embodiment.

[0031] As shown in the attached drawing reference numerals are as follows: box body 1, front volute 2, front cross-flow fan 4, first motor 401, rear volute 3, rear cross-flow fan 5, second motor 501, front air outlet 101, front air inlet 103, rear air outlet 102, rear air inlet 105, air deflector 10, inner cavity of the air inlet duct 12, compressor 15, condenser 8, throttling device 801, evaporation heat exchange device 13, evaporation tube 1301, evaporation plate 1302, graphene heater 1101, PCT heating tube 1102, inclined plate 1002, arc plate 1001, front air deflector 106, rear air deflector 104, grille 901, filter screen 9, angle code 1003, bottom plate 14, air inlet gap 1401, evaporation plate boss 1303, installation gap 1305, evaporation plate concave block 1304, exhaust hot air cross-flow fan 6, exhaust hot air cross-flow fan 601, exhaust volute 7. Detailed implementation manners

[0032] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the 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 drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0033] Below with reference to Figures 1 to 9Describe a heat exchange system of a double-duct pet drying box according to an embodiment of the present invention, including a box body 1 and a refrigeration system. A front air supply device and a rear air supply device are respectively provided at the top of the inner cavity of the box body 1. The front air supply device includes a front volute 2, a front cross-flow fan 4 and a first motor 401 for driving the front cross-flow fan 4. The rear air supply device includes a rear volute 3, a rear cross-flow fan 5 and a second motor 501 for driving the rear cross-flow fan 5. The front volute 2 is respectively provided with a front air outlet 101 and a front air inlet 103. The rear volute 3 is respectively provided with a rear air outlet 102 and a rear air inlet 105. A guide vane 10 is provided at the corresponding position of the rear air inlet 105. The lower end of the guide vane 10 extends above the inner bottom surface of the box body 1. An air inlet duct inner cavity 12 is formed between the guide vane 10 and the back surface of the box body 1. The rear air inlet 105 is communicated with the air inlet duct inner cavity 12; as Figure 9 shown, the refrigeration system includes a compressor 15, a condenser 8, a throttling device 801 and an evaporation heat exchange device 13. The evaporation heat exchange device 13 is arranged in the air inlet duct inner cavity 12, as Figure 7 and Figure 8 shown, the evaporation heat exchange device 13 includes an evaporation plate 1302 and evaporation tubes 1301. The evaporation tubes 1301 are installed on the evaporation plate 1302; It further includes a heating device. The heating device is arranged above the evaporation heat exchange device 13. This design is beneficial to reducing the hair from easily attaching to the heating device and preventing the hair from burning and generating peculiar smell.

[0034] The working principle of the present invention is as follows: as Figure 1 shown in Figure 10 and Figure 1 shown, air enters the air inlet duct from the air inlet gap 1401 between the bottom plate 14 and the guide vane 10, flows in the direction from bottom to top, successively passes through the evaporation heat exchange device 13 to implement dehumidification and the heating device to heat the air, and the second motor 501 drives the rear cross-flow fan 5 to implement air circulation, and blows the heated air into the box body 1 from the rear air outlet 102. Most of the hot air dries the hair on the upper body of the pet or on one side of the pet. As Figure 1Schematic diagram of the air outlet direction of the hot air from the front air outlet 101. Part of the air blows onto the upper body of the pet or the hair on one side of the pet, and the other part blows onto the left inner wall of the box. The air that blows onto the left inner wall of the box is blocked back, and part of the air will blow onto the lower body of the pet and the hair under the four armpits of the pet, further drying the pet's hair. Similarly, the rear air outlet 102 discharges hot air. As Figure 1 Schematic diagram of the air outlet direction of the hot air from the rear air outlet 102. Part of the air blows onto the upper body of the pet or the hair on the other side of the pet, and the other part blows onto the right inner wall of the box. The air that blows onto the right inner wall of the box is blocked back, and part of the air will blow onto the lower body of the pet and the hair under the four armpits of the pet, further drying the pet's hair, achieving the effect of drying the pet's hair without dead angles in 360 degrees.

[0035] As Figure 1 shown, the hot air in the box blows on the pet. Since the pet has just finished bathing and the hair on its body is wet, when only hot air is used to dry the moisture on the pet's body, a large amount of water vapor will be generated, making the box stuffy and humid. The physical phenomenon of "stuffy and humid" should be understood as hot and humid air. The hot and humid air circulates in the box for a long time, and the pet will become restless. To solve this phenomenon, this embodiment also adds a device for injecting heated air into the box and dehumidifying the heated air, that is, a refrigeration system for dehumidifying the heated air. The hot and humid air is cooled at the evaporation heat exchange device 13, the moisture condenses and is discharged, the moisture in the dry hot and humid air is removed, and then it is reheated by the heating device and recycled. In addition, when the evaporation heat exchange device 13 is in the refrigeration state, water droplets are formed on the surface of the evaporation heat exchange device 13, which can take away the hair and dust adhering to part of the evaporation pipe 1301.

[0036] As Figure 4 shown, the heating device is a graphene heater 1101, or as Figure 5 shown, the PCT heating pipe 1102. The graphene heater 1101 is a single-layer two-dimensional crystal material composed of carbon atoms, with extremely high electrical conductivity and heat conduction performance. It can quickly transfer heat to the surrounding environment, thus achieving uniform heating. In other words, when the air in the box enters from the gap 1401 and is dehumidified by the evaporation heat exchange device 13, it can uniformly exchange heat with the heat emitted by the graphene heater 1101, effectively improving the heat exchange effect.

[0037] As Figure 1 and Figure 3 shown, the air guide plate 10 is connected to the rear air inlet 105 through an inclined plate 1002. The air guide plate 10 is connected to the inclined plate 1002 through an arc plate 1001. The air guide plate 10, the inclined plate 1002 and the rear air inlet 105 are integrally formed. Among them, the arc plate 1001 is used for transition, forming a smooth air flow and further achieving a noise reduction effect.

[0038] The front air inlet 103 is also provided with a grille 901, and a filter screen 9 is arranged inside the grille 901. Specifically, the grille 901 is installed at the front air inlet 103, and the filter screen 9 is embedded inside it. The grille 901 is designed to be detachable, which is convenient for regularly cleaning the intercepted pet hair. The filter screen 9 adopts a multi-layer metal mesh structure with a pore diameter less than 1 mm, which can effectively block fine hair and dust, preventing them from entering the front volute 2 and reducing the air volume. At the same time, it will also cause pet hair to stick to the front cross-flow impeller 4, increasing the cleaning difficulty. The installation position of the filter screen 9 is close to the entrance of the front air inlet 103 to ensure that the air flow is filtered before entering the front volute 2, and the circulating air flow is implemented inside the housing 1.

[0039] As Figure 1 , Figure 2 and Figure 3 shown, the front row air outlet 101 is provided with a front air deflector 106, and the rear row air outlet 102 is provided with a rear air deflector 104. The front air deflector 106 and the rear air deflector 104 are used to adjust the air supply angle. For this embodiment, the front air deflector 106 is inclined to the left, facilitating the hot air discharged from the front row air outlet 101 to blow to the left and even the inner wall of the left side of the box, so that the hot air blows to the left inner wall of the box, and the wind blowing to the left inner wall of the box is blocked and reversed back into the box; similarly, the rear air deflector 104 is inclined to the right, facilitating the hot air discharged from the rear row air outlet 102 to blow to the right and even the inner wall of the right side of the box, so that the hot air blows to the right inner wall of the box, and the wind blowing to the right inner wall of the box is blocked and reversed back into the box. Specifically, the rear air inlet 105 is communicated with the inner cavity 12 of the air inlet duct. Under the action of the rear cross-flow impeller 5, the air inside the box enters the inner cavity 12 of the air inlet duct from the air inlet gap 1401, and is discharged in sequence through the evaporation heat exchange device 13, the heating device, the rear air inlet 105, and the rear row air outlet 102 to form an internal circulation. For this embodiment, after the pet takes a bath, it enters the box, closes the door, first starts the rear air supply device and at the same time starts the heating device. When the air inside the box is heated to a temperature of 38 °C to 40 °C and the relative humidity of the air is greater than 60% at this time, the refrigeration system is started, and at the same time the front air supply device is started to increase the air volume, so that the hot air blows to different positions of the pet. For this embodiment, when the rear air supply device is started, under the action of the rear air deflector 104, a part of the hot air blows to the hair on the upper body or the right side of the pet, and another part of the hot air blows to the right inner wall of the box, and the hot air blowing to the right inner wall of the box is blocked and reversed back into the box. Some of the hot air will blow to the lower body of the pet and the hair under the four limbs of the pet to further dry the pet's hair, but the drying effect on the other side (i.e., the left side) of the pet is not good. To solve the above deficiencies, after the front air supply device is turned on, as Figure 1 and Figure 10As shown in the figure, the schematic diagram of the air outlet direction of the hot air from the front air outlet 101 is as follows: a part of the hot air blows onto the upper body or the hair on the left side of the pet, and another part of the hot air blows onto the left inner wall of the box. The hot air that blows onto the left inner wall of the box is blocked and returns to the inside of the box, and some of the hot air will blow onto the lower body of the pet and the hair under the four armpits of the pet, further drying the pet's hair, achieving the effect of drying the pet's hair without dead angles in 360 degrees. Of course, for those skilled in the art, in order to make the hot air achieve full coverage, increase the hot air blowing onto the pet, further achieve the form of blowing hot air without dead angles in 360 degrees, and further accelerate the technical effect of drying the pet's hair, 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 at the front air outlet 101, so as to change the direction of the hot air discharged from the front air outlet 101; similarly, the rear air guide plate 104 is hinged to the rear air outlet 102, that is, the rear air guide plate 104 is driven by a stepper motor to swing left and right at the rear air outlet 102, so as to change the direction of the hot air discharged from the rear air outlet 102.

[0040] As Figure 5 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 body 1 through an angle code 1003 to ensure the structural stability.

[0041] As Figure 1 and Figure 2 shown, a bottom plate 14 is provided on the bottom surface of the box body 1, and an air inlet gap 1401 is provided between the air guide plate 10 and the bottom plate 14. More specifically: there is an air inlet gap 1401 between the lower end of the air guide plate 10 and the bottom plate 14 provided on the bottom surface of the box body 1, which is used to allow the air in the box to enter the inner cavity 12 of the air inlet duct from the gap 1401. This design enhances the air inlet efficiency through the air flow direction from bottom to top. Specifically, under the combined action of the front air supply device and the rear air supply device, the hot air in the box enters from the air inlet gap 1401.

[0042] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 7 and Figure 8 shown, the evaporation plate 1302 is provided with a plurality of evaporation plate bosses 1303. The evaporation plate bosses 1303 are provided with installation gaps 1305 for installing evaporation pipes 1301, and evaporation plate recesses 1304 are provided between adjacent evaporation plate bosses 1303. As Figure 7 and Figure 8As shown, multiple evaporator plate bosses 1301 are arranged on the surface of the evaporator plate 1302 at equal distance intervals. The evaporator plate boss 1303 is provided with an installation gap 1305 for installing the evaporator tube 1301. The evaporator tube 1301 is embedded in the installation gap 1305 and fixed on the installation gap 1305. Specifically, an evaporator tube 1301 with the same outer diameter as the installation gap 1305 is embedded into the evaporator tube 1301, and then the evaporator tube 1301 is fixedly installed in the installation gap 1305 by welding. For those skilled in the art, it should be clear that it is not limited to the above welding method. In order to increase the heat exchange effect of the evaporation heat exchange device 13, an evaporator plate recess 1304 is provided between the evaporator plate boss 1303 and the adjacent evaporator plate boss. Adding the evaporator plate recess 1304 effectively increases the heat exchange area of the evaporator plate 1302. At the same time, the structure of the evaporator plate boss 1303 and the evaporator plate recess 1304 is set. Through the evaporator plate boss 1303 and the evaporator plate recess 1304 that can disrupt the air flow with the "concave" and "convex" shapes, the heat exchange time between the air in the air inlet duct cavity 12 and the evaporation heat exchange device 13 is further increased, that is, the heat exchange effect is further increased, that is, the humid air in the box is further dehumidified, making the air circulating in the box dry, and improving the effect of drying pet hair.

[0043] In the refrigeration system of this embodiment, the refrigeration system includes a compressor 15, a condenser 8, a throttling device 801, and an evaporation heat exchange device 13. In order to achieve a better heat exchange effect for the condenser 8, an exhaust volute 7, an exhaust heat cross-flow fan 6, and an exhaust heat cross-flow fan 601 for driving the exhaust heat cross-flow fan 6 are further provided on the condenser 8. The specific refrigeration principle belongs to the prior art and will not be elaborated in this specification.

Claims

1. A heat exchange system for a double-duct pet drying box, comprising a box body (1) and a refrigeration system, characterized in that, At the top of the inner cavity of the box body (1), there are respectively 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 air wheel (4), and a first motor (401) for driving the front cross-flow air wheel (4). The rear air supply device includes a rear volute (3), a rear cross-flow air wheel (5), and a second motor (501) for driving the rear cross-flow air wheel (5). The front volute (2) is respectively provided with a front air outlet (101) and a front air inlet (103). The rear volute (3) is respectively provided with a rear air outlet (102) and a rear air inlet (105). At the corresponding position of the rear air inlet (105), there is a guide vane (10). The lower end of the guide vane (10) extends above the inner bottom surface of the box body (1). An air inlet duct inner cavity (12) is formed between the guide vane (10) and the back surface of the box body (1). The refrigeration system includes a compressor (15), a condenser (8), a throttling device (801), and an evaporation heat exchange device (13). The evaporation heat exchange device (13) is arranged in the air inlet duct inner cavity (12). The evaporation heat exchange device (13) includes an evaporation plate (1302) and evaporation tubes (1301). The evaporation tubes (1301) are installed on the evaporation plate (1302). It further includes a heating device, and the heating device is arranged above the evaporation heat exchange device (13).

2. The heat exchange system of a double-air duct pet drying box 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 double-air duct pet drying box according to claim 1, characterized in that, The guide vane (10) is connected to the rear air inlet (105) through an inclined plate (1002).

4. The heat exchange system of a double-air duct pet drying box according to claim 2, characterized in that, The guide vane (10) is connected to the inclined plate (1002) through an arc-shaped plate (1001).

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

6. The heat exchange system of a double-air duct pet drying box according to claim 1, characterized in that, The front air inlet (103) is further provided with a grille (901). A filter screen (9) is arranged inside the grille (901). The guide vane (10) is connected to the inner side wall of the box body (1) through an angle code (1003).

7. The heat exchange system of a double-air duct pet drying box according to claim 1, characterized in that, A bottom plate (14) is arranged on the bottom surface of the box body (1). An air inlet gap (1401) is arranged between the guide vane (10) and the bottom plate (14).

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

9. The heat exchange system of a double-air duct pet drying box according to claim 8, characterized in that An evaporation plate recess (1304) is arranged between the evaporation plate bosses (1303) and adjacent evaporation plate bosses (1303).

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