Heat pump system of heat pump clothes dryer and heat pump clothes dryer

Abstract

The utility model discloses a heat pump system of a heat pump clothes dryer and the heat pump clothes dryer, and the heat pump system comprises a heat exchange box body which is provided with a heat exchange cavity and a compressor cavity, and the heat exchange cavity and the compressor cavity are separated from each other; the heat exchange system is arranged in the heat exchange cavity; the compressor is arranged in the compressor cavity; the cooling fan is used for introducing cooling air into the compressor cavity to dissipate heat of the compressor; the compressor chamber is provided with an air inlet, an air outlet and an air duct communicating the air inlet and the air outlet, the compressor is arranged in the air duct, and the cooling fan and the compressor are mutually spaced in the height direction of the compressor, so that cooling air guided by the air duct flows through the peripheral surface of the compressor in the height direction of the compressor; the heat pump clothes dryer comprises the heat pump system. The cooling device is low in cost and good in cooling effect.

Description

Technical Field

[0001] This utility model relates to the field of heat pump dryer technology, and in particular to a heat pump system and a heat pump dryer. Background Technology

[0002] A heat pump dryer's heat pump system includes a heat exchanger and a compressor. The heat exchanger includes a condenser and an evaporator. Currently, existing heat pump dryers generally have two layouts for their heat pump systems. One layout involves the heat exchanger and compressor being built into the same heating hood, meaning they reside in the same chamber. The heating hood has an air inlet with a switching valve inside. This switching valve is normally closed. When cooling the compressor is needed, the valve opens, allowing cooling air driven by an external cooling fan to enter through the air inlet and cool the compressor. Because the heat exchanger and compressor are in the same chamber, the cooling air has a certain impact on the operation of the heat exchanger. In addition, the use of a switching valve increases costs, and an additional control system is needed to control the switching valve for better compressor cooling, resulting in a complex structure. Another option is to have the heat exchange system inside the heating shroud and the compressor outside the heating shroud. A cooling fan located outside the heating shroud is used to cool the compressor, but the cooling fan is located on the horizontal side of the vertically mounted compressor. In order for the cooling air to cover the entire compressor, there needs to be sufficient spacing between the cooling fan and the compressor. However, existing heat pump dryers lack the space to meet this spacing requirement, resulting in poor cooling performance. At the same time, the cooling effect is also poor on the side of the compressor away from the cooling fan. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a heat pump system and a heat pump dryer, which has the advantages of low cost and good cooling effect.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A heat pump system for a heat pump dryer includes:

[0006] The heat exchange chamber has a heat exchange cavity and a compressor cavity, which are separated from each other;

[0007] The heat exchange system is built into the heat exchange cavity;

[0008] The compressor is built into the compressor chamber;

[0009] A cooling fan is used to introduce cooling air into the compressor chamber to dissipate heat from the compressor.

[0010] The compressor chamber has an air inlet, an air outlet, and an air duct connecting the two. The compressor is placed in the air duct. The cooling fan and the compressor are spaced apart in the compressor height direction, so that the cooling air guided by the air duct flows along the compressor height direction and passes over the outer peripheral surface of the compressor.

[0011] By adopting the above technical solution, the compressor and heat exchange system are located in different cavities, thus eliminating the need for switching valves and reducing costs. In addition, the cooling fan is placed in the air duct, and the cooling fan and the compressor are spaced apart in the height direction of the compressor. In this way, the cooling air enters from the air inlet, flows through the air duct, and is discharged from the air outlet. The cooling air passes through the entire compressor along the height direction, which increases the contact area with the compressor in the heat dissipation air duct and results in a better cooling effect.

[0012] Optionally, the air duct includes a heat dissipation air duct surrounding the outer periphery of the compressor; the heat dissipation air duct may be continuous or discontinuous along the circumference of the compressor.

[0013] By adopting the above technical solutions, when the heat dissipation air duct is circumferentially continuous, the contact area between the cooling air and the compressor is the largest, resulting in better cooling effect; when the heat dissipation air duct is circumferentially discontinuous, the contact area between the cooling air and the compressor is relatively smaller than that of the circumferentially continuous type, but the compressor position is more stable, reducing the generation of vibration.

[0014] Optionally, the air outlet includes a plurality of side exhaust holes disposed on the side wall of the compressor cavity and distributed along the circumference of the compressor.

[0015] By adopting the above technical solution, a side exhaust port is provided on the side wall of the compressor cavity, and the bottom of the compressor cavity can be used to support the compressor. The compressor and the side wall of the compressor cavity do not need to be supported, so as not to reduce the cross-sectional area of ​​the heat dissipation air duct and affect cooling.

[0016] Optionally, the side exhaust port surrounds the lower part of the compressor.

[0017] By adopting the above technical solution, the side exhaust port is located around the lower part of the compressor, which allows the cooling air to leave the compressor cavity after completing the overall cooling of the compressor, which helps to improve cooling efficiency.

[0018] Optionally, the lower end of the side exhaust port is provided with an opening.

[0019] By adopting the above technical solution, the lower end of the side exhaust port is opened, which makes the cooling air flow out of the compressor cavity more smoothly, thereby improving the cooling efficiency.

[0020] Optionally, the compressor cavity has a cylindrical compressor mounting section and an extension section extending radially along the compressor mounting section, the extension direction of which is parallel to the length direction of the partition between the heat exchange cavity and the compressor cavity; the compressor mounting section is used to mount the compressor; a refrigerant flow pipe is connected between the heat exchange system and the compressor; the extension section is for arranging the refrigerant flow pipe; and a lower exhaust port is provided on the bottom wall of the extension section.

[0021] By adopting the above technical solution, a lower exhaust hole is provided on the bottom wall of the extension, which makes the cooling air entering the extension flow out of the compressor cavity more smoothly, thereby improving the cooling efficiency.

[0022] Optionally, the cooling fan is located at the air inlet.

[0023] By adopting the above technical solution, the cooling fan is located at the air inlet, which makes it easy to observe the cooling fan and facilitates the disassembly and assembly of the cooling fan for maintenance or replacement.

[0024] Optionally, the heat exchange chamber includes a chamber body and a cover; the chamber body and the cover are detachably connected.

[0025] By adopting the above technical solution, the box body and the box cover can be detachably connected, which facilitates the disassembly and assembly of internal components of the heat exchange box, and also benefits the processing and production of the box body and the box cover.

[0026] A heat pump dryer having the above-mentioned heat pump system.

[0027] By adopting the above technical solution, there is no need to switch valves, thus reducing costs; the cooling air passes through the entire compressor along the height direction, increasing the contact area with the compressor in the heat dissipation duct, resulting in excellent cooling effect. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of the heat pump clothes dryer of this utility model.

[0029] Figure 2 This is a schematic diagram of the heat pump dryer of this utility model, omitting the back panel.

[0030] Figure 3 This is a schematic diagram of the heat pump system of this utility model.

[0031] Figure 4 This is a schematic diagram of the heat pump system of this utility model.

[0032] Figure 5 This is a schematic diagram of the structure of the box body and the box cover when separated.

[0033] Figure 6 This is a cross-sectional structural diagram of the heat pump system of this utility model.

[0034] Figure 7 This is the utility model Figure 6 A magnified structural diagram of a portion of the structure.

[0035] Figure 8 This is a structural schematic diagram of the box body of this utility model.

[0036] Figure 9 This is a partial structural schematic diagram of the cross-section of this utility model.

[0037] Figure 10 This is a partial structural schematic diagram of the cross-section of this utility model.

[0038] Explanation of reference numerals in the attached figures:

[0039] 10. Outer casing; 100. Clothing inlet / outlet;

[0040] 20. Drum;

[0041] 30. Heat pump system;

[0042] 40. Heat exchange chamber; 400. Air inlet; 401. Side exhaust port; 402. Heat exchange cavity; 403. Compressor cavity; 404. Air inlet channel; 405. Heat dissipation duct; 406. Air outlet channel; 407. Lower exhaust port; 408. Compressor mounting section; 409. Extension section; 41. Cover; 410. Upper heat exchange tank; 411. Upper compressor tank; 42. Chamber; 420. Lower heat exchange tank; 421. Lower compressor tank; 43. Support feet; 44. Refrigerant flow pipe;

[0043] 50. Cooling fan;

[0044] 60. First side connecting plate;

[0045] 70. Second side connecting plate;

[0046] 80. Compressor;

[0047] 90. Heat exchange system. Detailed Implementation

[0048] The following is in conjunction with the appendix Figures 1-10 The present invention will be described in further detail below.

[0049] Example 1: A heat pump clothes dryer, reference Figure 1 and Figure 2 It includes a housing 10, a drum 20 and a heat pump system 30; the drum 20 and the heat pump system 30 are disposed inside the housing 10 and the drum 20 is located on the upper side of the heat pump system 30; the housing 10 is provided with a clothing loading port 100 facing the drum 20.

[0050] refer to Figures 3-6 The heat pump system 30 includes a heat exchange box 40, a heat exchange system 90, a compressor 80, and a cooling fan 50. The heat exchange box 40 includes a box body 42 and a cover 41. The cover 41 is fixed to the upper surface of the box body 42 with screws. To facilitate screw installation, one of the box body 42 and the cover 41 is provided with a pre-positioning post, and the other is provided with a pre-positioning groove that mates with the pre-positioning post. When the pre-positioning post is inserted into the pre-positioning groove, the holes for screw installation on the box body 42 and the cover 41 are aligned. A lower compressor groove 421 and a lower heat exchange groove 420 are formed on the upper surface of the box body 42. The lower compressor groove 421 and the lower heat exchange groove 420 are separated by a lower partition 422. An upper compressor groove 411 and an upper heat exchange groove 410 are formed on the lower surface of the cover 41. The upper compressor groove 411... The upper heat exchange slot 410 is separated from the lower heat exchange slot 421 by an upper partition 412. When the cover 41 is installed on the housing 42, the upper compressor slot 411 and the lower compressor slot 421 form the compressor cavity 403, the upper heat exchange slot 410 and the lower heat exchange slot 420 form the heat exchange cavity 402, and the lower partition 422 and the upper partition 412 form a partition. The heat exchange cavity 402 and the compressor cavity 403 are separated from each other by the partition. The heat exchange system 90 includes a condenser and an evaporator. The condenser and the evaporator are installed in the heat exchange cavity 402. The compressor 80 is installed vertically in the compressor cavity 403. The bottom of the compressor 80 is fixed with a support frame, which is fixed to the bottom surface of the lower compressor slot 421 by bolts. The cooling fan 50 is installed on the cover 41 and close to the back plate of the outer casing 10. Several ventilation holes are formed on the back plate.

[0051] To increase the installation stability of the heat pump system 30, refer to Figure 4 The bottom surface of the housing 42 is fixed with a first side connecting plate 60 and a second side connecting plate 70 by bolts. The first side connecting plate 60 and the second side connecting plate 70 are respectively fixedly connected to two opposite side walls of the outer shell 10 by bolts. The first side connecting plate 60 and the second side connecting plate 70 are made of stainless steel plate, which has high strength and is not easy to rust. Several support feet 43 are also fixed on the bottom surface of the housing 42. The support feet 43 abut against the inner side wall of the outer shell 10, so that there is a gap between the bottom of the heat pump system 30 and the inner side wall of the outer shell 10 to facilitate better air circulation.

[0052] refer to Figures 5-7An air inlet 400 is formed on the side wall of the cover 41 away from the heat exchange chamber 402, and an air outlet is provided at the bottom of the compressor chamber 403; an air duct is formed between the air inlet 400 and the air outlet; the cooling fan 50 is installed inside the air inlet 400, so that the exposed installation position of the cooling fan 50 makes it easier to install and remove the cooling fan 50, and also makes it easier to observe the cooling fan 50; the air duct includes a heat dissipation air duct 405 surrounding the outer periphery of the compressor; the upper end of the heat dissipation air duct 405 is higher than the compressor 80 and the lower end is lower than the compressor 80, so that the entire compressor 80 is located inside the heat dissipation air duct 405; in this way, the cooling fan 50 and the compressor 80 are spaced apart from each other in the height direction of the compressor 80, so that the cooling air guided by the air duct flows along the height direction of the compressor 80 and passes through the outer periphery of the compressor 80.

[0053] Working principle of Example 1: When the cooling fan 50 is working, the cooling air enters the compressor cavity 403 from the air inlet 400, and then flows from top to bottom to the air outlet. During the flow, it passes vertically through the heat dissipation duct 405 and cools the compressor 80 located in the heat dissipation duct 405. During this process, the cooling air comes into contact with the entire outer surface of the compressor 80, so the cooling effect is good; at the same time, this layout requires less space.

[0054] Example 2: The difference between Example 2 and Example 1 is that the cooling fan 50 may not be installed inside the air inlet 400; see reference. Figure 7 The air duct includes an air inlet 404 extending from the air inlet 400 to the upper end of the cooling duct 405, and an air outlet 406 extending from the air outlet to the lower end of the cooling duct 405. To ensure the cooling air contacts the entire outer surface of the compressor 80, the cooling fan 50 can be installed in either the air inlet duct 404 or the air outlet duct 406. This allows the cooling air generated by the cooling fan 50 to flow sequentially along the air inlet duct 404, the cooling duct 405, and the air outlet duct 406, thus contacting the entire outer surface of the vertically positioned compressor 80 and improving cooling efficiency. This design requires less installation space compared to the configuration where the cooling fan 50 is positioned on one side of the vertically positioned compressor 80 in the horizontal direction, i.e., the cooling airflow direction generated by the cooling fan 50 is perpendicular to the axis of the compressor 80.

[0055] Example 3: The difference between Example 3 and Example 1 is that: several side support frames are formed on the side wall of the lower compressor slot 421; the side support frames are located inside the heat dissipation air duct 405 and the side support frames make the heat dissipation air duct 405 discontinuous along the circumference of the compressor. Compared with Example 1, where no side support frames are set so that the heat dissipation air duct 405 is continuous along the circumference of the compressor, the side support frames increase the support of the compressor 80 in the horizontal direction. Although the horizontal cross-sectional area of ​​the heat dissipation air duct 405 is smaller, it reduces the swaying and vibration of the compressor 80 due to airflow, and the installation stability of the compressor 80 is stronger.

[0056] Example 4: The difference between Example 4 and Example 1 is as follows: (Refer to...) Figures 7-10 The air outlet includes several side exhaust holes 401 formed on the side wall of the lower compressor slot 421; the side exhaust holes 401 are distributed along the circumference of the compressor 80.

[0057] In order to increase the contact area between the cooling air and the outer surface of the compressor 80, the side exhaust port 401 is arranged around the lower part of the compressor 80. During operation, the cooling air completes the overall cooling of the compressor before leaving the compressor cavity 403, which helps to improve the cooling efficiency.

[0058] To improve the smoothness of the cooling airflow from the side exhaust port 401, the lower end of the side exhaust port 401 is open, so that the direction of the cooling airflow from the compressor cavity 403 is vertical, which is roughly the same as the flow direction of the cooling air in the compressor cavity 403, making it easier for the cooling air to flow out. However, when the lower end of the side exhaust port 401 is not open, the direction of the cooling airflow from the compressor cavity 403 is horizontal, which is perpendicular to the flow direction of the cooling air in the compressor cavity 403, and the cooling airflow is relatively less smooth.

[0059] To form this side exhaust port 401 structure, a disc-shaped base is formed at the bottom of the lower compressor slot 421. The lower end of the inner circumferential surface of the side wall of the lower compressor slot 421 where the side exhaust port 401 is located is connected to the outer circumferential surface of the base, so that the lower opening of the side exhaust port 401 is located around the base.

[0060] refer to Figure 5 , Figures 8-10 A refrigerant flow pipe 44 is provided between the compressor 80 and the condenser and evaporator. To accommodate the refrigerant flow pipe 44, the compressor cavity 403 is divided into a cylindrical compressor mounting section 408 for mounting the compressor 80 and an extension section 409 extending radially along the compressor mounting section. The extension direction of the extension section 409 is parallel to the length direction of the partition between the heat exchange cavity 402 and the compressor cavity 403. The extension section 409 is used to accommodate the refrigerant flow pipe 44, thereby avoiding the refrigerant flow pipe 44 from concentrating and affecting the cooling airflow. Therefore, some cooling air will enter the extension section 409. To increase the flow rate within the extension section 409, a lower exhaust port 407 is provided on the bottom wall of the extension section 409. The lower exhaust port 407 can be elongated, with its length direction along the extension direction of the extension section 409. For better exhaust, multiple lower exhaust ports 407 can be provided, and all lower exhaust ports 407 are arranged parallel to each other.

[0061] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A heat pump system for a heat pump dryer, comprising: The heat exchange chamber has a heat exchange cavity and a compressor cavity, which are separated from each other; The heat exchange system is built into the heat exchange cavity; The compressor is built into the compressor chamber; A cooling fan is used to introduce cooling air into the compressor chamber to dissipate heat from the compressor. The compressor chamber is characterized by having an air inlet, an air outlet, and a duct connecting the two. The compressor is placed in the duct, and the cooling fan is spaced apart from the compressor in the compressor height direction, so that the cooling air guided by the duct flows along the compressor height direction and passes over the outer peripheral surface of the compressor.

2. The heat pump system of a heat pump dryer according to claim 1, characterized in that: The air duct includes a heat dissipation air duct surrounding the outer periphery of the compressor; the heat dissipation air duct may be continuous or discontinuous along the circumference of the compressor.

3. The heat pump system of a heat pump dryer according to claim 1, characterized in that: The air outlet includes several side exhaust holes disposed on the side wall of the compressor cavity and distributed along the circumference of the compressor.

4. The heat pump system of a heat pump dryer according to claim 3, characterized in that: The side exhaust port surrounds the lower part of the compressor.

5. The heat pump system of a heat pump dryer according to claim 3, characterized in that: The lower end of the side exhaust port is provided with an opening.

6. The heat pump system of a heat pump dryer according to claim 1, characterized in that: The compressor cavity has a cylindrical compressor mounting section and an extension section extending radially along the compressor mounting section. The extension direction of the extension section is parallel to the length direction of the partition between the heat exchange cavity and the compressor cavity. The compressor mounting section is used to mount the compressor. A refrigerant flow pipe is connected between the heat exchange system and the compressor. The extension section is for arranging the refrigerant flow pipe. A lower exhaust port is provided on the bottom wall of the extension section.

7. The heat pump system of a heat pump dryer according to claim 1, characterized in that: The cooling fan is located at the air inlet.

8. The heat pump system of a heat pump dryer according to claim 1, characterized in that: The heat exchange box includes a box body and a box cover; the box body and the box cover are detachably connected.

9. A heat pump clothes dryer, characterized in that: The heat pump system having any one of claims 1-8.

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