Drying equipment utilizing waste heat

Abstract

The invention provides drying equipment utilizing waste heat. The drying equipment comprises a machine body; the heating device is arranged in the machine body; the main control board is arranged at the upper part of the machine body; and the heat transfer device is used for conducting heat generated by the heating device at the operation stage to the main control board so as to heat air at the main control board. According to the drying equipment, heat generated during operation of the heating device is conducted to the main control board, so that damp and hot air is prevented from being condensed at the main control board; and on the other hand, heat conducted to the main control board can avoid condensation of the humid and hot air, and original air at the main control board can be heated to expand, so that external humid and hot air is prevented from entering.

Description

Technical Field

[0001] The invention belongs to the technical field of household appliances, and in particular relates to a drying device utilizing waste heat. Background Art

[0002] Although the drying equipment has high sealing performance, hot and humid air will leak into the body during the drying process. When the hot and humid air encounters the relatively low temperature plastic parts or metal plates on the drying equipment, condensation will occur, and when there is too much condensation, water droplets will form. If the hot and humid air condenses inside the main control board, condensation droplets will appear on the user-visible parts such as the display screen, reducing the user experience. These condensation droplets may also cause short circuit failure of electrical components, resulting in product quality problems and consumer complaints.

[0003] In the prior art, the sealing of the drying equipment is improved by adding a seal between the running part and the stationary part, but the seal is required to have properties such as wear resistance and high temperature resistance, and the seal increases the friction between the running part and the stationary part, increases the load of the drying equipment motor, and thus increases the energy consumption of the drying equipment. It is also possible to avoid the generation of condensed water droplets on the display screen by installing a fan on the main control board, and the fan can blow away the hot and humid air, but this form has a more complex structure and requires an additional control system.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a drying device for waste heat utilization, which prevents condensation of hot and humid air at the main control board by conducting the heat generated by the heating device during operation to the main control board.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A drying device for waste heat utilization, comprising:

[0008] Body;

[0009] A heating device, wherein the heating device is arranged inside the machine body;

[0010] A main control board, which is arranged on the upper part of the machine body;

[0011] The heat transfer device is used to transfer the heat generated by the heat generating device during the operation phase to the main control board to heat the air at the main control board.

[0012] Furthermore, the heating device is the refrigerant flowing out of the condenser, and the heat transfer device is the refrigerant pipeline connecting the condenser and the throttling device.

[0013] Furthermore, the heat transfer device is a heat pipe, and the heat pipe includes an evaporation section, a condensation section, and an insulation section arranged therebetween, the evaporation section is arranged on one side of the heating device, and the condensation section is arranged on one side of the main control board;

[0014] The heating device includes a compressor and / or a motor.

[0015] Furthermore, it also includes a heat dissipation fan for cooling the heating device, and the evaporation section of the heat pipe is arranged on one side of the air outlet of the heat dissipation fan.

[0016] Furthermore, the evaporation section includes a first bending section and a first connecting section connecting the heat-insulating section and the first bending section;

[0017] The first bending section is provided with a plurality of U-shaped bends.

[0018] Furthermore, the height of the starting section of the first bending section is consistent with the height of the bottom of the heating device;

[0019] The height of the terminal section of the first bending section is consistent with the height of the top of the heating device.

[0020] Furthermore, the condensing section includes a second bending section and a second connecting section connecting the thermal insulation section and the second bending section;

[0021] The second bending section is provided with a plurality of U-shaped bends.

[0022] Furthermore, the horizontal length of the second bending section is greater than or equal to 1 / 2 of the length of the main control board.

[0023] Furthermore, the distance between the U-shaped bends of the second bending section is 2%-5% of the length of the main control board, and the distance between the U-shaped bends of the first bending section is the same as the distance between the U-shaped bends of the second bending section.

[0024] Furthermore, the thermal insulation section is a straight line section.

[0025] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0026] The drying equipment of the present invention prevents condensation of hot and humid air at the main control board by conducting the heat generated by the heating device during operation to the main control board; on the other hand, the heat conducted to the main control board can not only prevent condensation of hot and humid air, but also cause the original air at the main control board to expand due to the heat, thereby isolating the entry of hot and humid air from the outside.

[0027] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0029] Figure 1 is a schematic side view of the heat pipe of the present invention;

[0030] Figure 2 It is a rear structural schematic diagram of the heat pipe of the present invention.

[0031] Description of the main components in the figure: 1. Compressor; 2. Main control board; 3. Heat pipe; 301. Evaporation section; 3011. First bending section; 3012. First connecting section; 302. Insulation section; 303. Condensation section; 3031. Second bending section; 3032. Second connecting section; 4. Machine body.

[0032] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0034] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In order to prevent the leaked hot and humid air from condensing on the main control board 2, the drying equipment in the prior art is additionally provided with a fan on the main control board 2, and the fan can blow the hot and humid air out of the main control board 2, but this form of structure is relatively complicated, and an additional control system is required to start and stop the fan.

[0037] The present invention provides a drying device for waste heat utilization, comprising:

[0038] Body 4;

[0039] A heating device, which is arranged inside the machine body;

[0040] A main control board 2, which is arranged on the upper part of the machine body 4;

[0041] The heat transfer device is used to transfer the heat generated by the heat generating device during the operation phase to the main control board 2 to heat the air at the main control board 2.

[0042] The drying device of the present invention prevents condensation of hot and humid air at the main control board 2 by conducting the heat generated by the heating device during operation to the main control board 2; on the other hand, the heat conducted to the main control board 2 can not only prevent condensation of hot and humid air, but also cause the original air at the main control board 2 to expand due to the heat, thereby isolating the entry of hot and humid air from the outside.

[0043] Furthermore, under the premise that the original layout of the main control board 2 remains unchanged, the present invention can transfer the waste heat to the main control board 2 through the heat transfer device, thereby saving the production cost of the enterprise and being more friendly to the enterprise.

[0044] In one embodiment of the present invention, the heating device is the refrigerant flowing out of the condenser. At this time, the refrigerant temperature is about 50°C, which can be used to heat the air at the main control board 2. Correspondingly, the heat transfer device is the refrigerant pipeline connecting the condenser and the throttling device. When the refrigerant flows out of the condenser and flows through the main control board 2 along the refrigerant pipeline, it exchanges heat with the air at the main control board 2, and then flows back to the throttling device along the refrigerant pipeline to circulate again.

[0045] In this embodiment, only one refrigerant pipeline may be provided between the condenser and the throttling device. At this time, all the refrigerants flow through the main control board 2, perform heat exchange with the air at the main control board 2, and then enter the throttling device.

[0046] Alternatively, to avoid affecting the turnover efficiency of the refrigerant, a main refrigerant pipeline and a branch refrigerant pipeline are provided between the condenser and the throttling device, wherein the branch refrigerant pipeline passes through the main control board 2. A part of the refrigerant flowing out of the condenser directly enters the throttling device through the main refrigerant pipeline, and the other part of the refrigerant passes through the branch refrigerant pipeline, exchanges heat with the air at the main control board 2, and then flows into the throttling device.

[0047] like Figure 1-2As shown, in another embodiment of the present invention, the heat transfer device is a heat pipe 3, and the heat pipe 3 is fixed to the body 4 through a plurality of fixing members, and the fixing members can fix the heat pipe 3 in the form of buckles or the like.

[0048] The heat pipe 3 includes an evaporation section 301 , a condensation section 303 and an insulation section 302 arranged therebetween. The evaporation section 301 is arranged on one side of the heating device, and the condensation section 303 is arranged on one side of the main control board 3 .

[0049] The heating device includes a compressor 1 and / or a motor. For ease of description, the following description takes the heating device as the compressor 1 as an example. However, it should be clear that the heat transfer device can also be a device that generates heat during the operation phase, such as a motor or a condenser. For example, the refrigerant releases heat when flowing through the condenser, and the heat pipe 3 can also conduct part of this heat to the main control board 2 to heat the air at the main control board 2. At this time, the condenser is a heating device.

[0050] During the operation of the compressor 1, the heat generated by it is absorbed by the evaporation section 301 of the heat pipe 3, and the medium in the heat pipe 3 is vaporized due to heat absorption. At this time, the pressure in the evaporation section 301 is greater than the pressure in the condensation section 303, and the medium vaporized into gas quickly diffuses from the evaporation section 301 to the condensation section 303, and the gaseous medium is liquefied from gas to liquid in the condensation section 303 and releases heat, and the liquid medium flows back to the evaporation section 301, and the heat released by its liquefaction is heat exchanged with the air at the main control board 2, and the temperature of the air at the main control board 2 rises. When the air temperature is greater than the dew point temperature of the humid hot air, the humid hot air will not condense at the main control board 2, thereby avoiding the occurrence of condensed water droplets at the display screen, fully ensuring the user experience.

[0051] In one embodiment of the present invention, a heat dissipation fan for cooling the compressor 1 is also provided at the compressor 1, and the evaporation section 301 of the heat pipe 3 is provided at one side of the air outlet of the heat dissipation fan. Under the action of the heat dissipation fan, the heat generated during the operation of the compressor 1 can be relatively quickly absorbed by the evaporation section 301 of the heat pipe 3 and conducted to the main control board 2, which can ensure that the operating temperature of the compressor 1 is not too high and that the air temperature at the main control board 2 is kept above the dew point temperature of the humid hot air.

[0052] As for the evaporation section 301 , the evaporation section 301 may be configured as a straight line section, or may be configured with a corner to change the extension direction of the evaporation section 301 .

[0053] When the evaporation section 301 is set as a straight section, since the distance between the starting point of the evaporation section 301 and the insulation section 302 is short, the length of the evaporation section 301 is small, so there is less medium in the evaporation section 301 for absorbing the heat of the compressor 1, the heat conducted in a single time is less, and the heat transfer efficiency of the heat pipe 3 is low.

[0054] When the evaporation section 301 is provided with a corner to change the extension direction, the length of the evaporation section 301 can be appropriately increased, thereby improving the heat transfer efficiency of the heat pipe 3 .

[0055] In order to ensure the heat transfer efficiency of the heat pipe 3, the evaporation section 301 of the heat pipe 3 of the present invention includes a first bending section 3011 and a first connecting section 3012 connecting the insulation section 302 and the first bending section 3011;

[0056] The first bending section 3011 is provided with a plurality of U-shaped bends, which fully utilizes the space at the lower part of the body 4 , increases the medium capacity in the evaporation section 301 by increasing the length of the evaporation section 301 , and further increases the heat transfer efficiency of the heat pipe 3 .

[0057] Furthermore, the height at the top of the first bending section 3011 is greater than or equal to the height at the top of the compressor 1 .

[0058] In one embodiment of the present invention, the starting section of the first bending section 3011 is arranged perpendicular to the ground, and the opening of the U-shaped bend in the first bending section 3011 faces upward or downward, and the first bending section 3011 extends in the horizontal direction.

[0059] In this embodiment, if the terminal section of the first bending section 3011 extends upward, the distance between the end point of the first bending section 3011 and the insulating section 302 is small, and the length of the first connecting section 3012 required when connected through the first connecting section 3012 is small; if the terminal section of the first bending section 3011 extends downward, the distance between the end point of the first bending section 3011 and the insulating section 302 is long, and the required first connecting section 3012 is longer, which is equivalent to an additional increase in the length of the evaporation section 301. At this time, the medium used to transfer heat in the heat pipe 3 may be relatively abundant relative to the heat generated during the operation of the compressor 1, resulting in waste of material.

[0060] To avoid waste of material, in another embodiment of the present invention, the starting section and the ending section of the first bending section 3011 are both arranged parallel to the ground. At this time, the opening of the U-shaped bend in the first bending section 3011 faces left or right, and the first bending section 3011 extends in a direction perpendicular to the ground, that is, the first bending section 3011 extends in a direction close to the insulation section 302.

[0061] In this embodiment, since the main body of the first bending section 3011 extends toward the direction close to the insulation section 302, no matter whether the terminal section of the first bending section 3011 extends to the left or right, the distance between the terminal section of the first bending section 3011 and the insulation section 302 is relatively close, and the length of the first connecting section 3012 required when connected through the first connecting section 3012 is relatively small, thereby avoiding material waste when the length of the first connecting section 3012 is too long.

[0062] Furthermore, in this embodiment, the height of the starting section of the first bending section 3011 is consistent with the height of the bottom of the compressor 1, and the height of the ending section of the first bending section 3011 is consistent with the height of the top of the compressor 1. The medium in the first bending section 3011 can absorb the heat generated by the compressor 1 during operation relatively quickly, and vaporize into gaseous state, and then the gaseous medium enters the insulation section 302 through the first connecting section 3012, and enters the condensation section 303 through the insulation section 302 to release heat.

[0063] When the spacing of the U-shaped bends in the first bending section 3011 is too large, due to the limited space in the lower part of the body 4, the length of the first bending section 3011 is correspondingly small, and the length of the evaporation section 301 is also correspondingly small. At this time, the medium in the evaporation section 301 may not be able to ensure the heat transfer efficiency, the heat of the compressor 1 cannot be dissipated in time, and the temperature at the main control board 2 cannot be continuously maintained above the dew point temperature of the humid hot air; when the spacing of the U-shaped bends in the first bending section 3011 is too small, the length of the first bending section 301 is correspondingly long, and the length of the evaporation section 301 is also correspondingly long. At this time, the medium in the evaporation section 301 may be relatively abundant relative to the heat generated by the compressor 1 during operation, resulting in waste of materials.

[0064] Therefore, in the present invention, the distance between the U-bends of the first bending section 3011 is preferably 2%-5% of the length of the main control board 2. At this time, the medium in the evaporation section 301 can ensure the heat transfer efficiency of the heat pipe 3 and avoid material waste.

[0065] For the condensation section 303 , the condensation section 303 disposed on the upper portion of the body 4 can be configured as a straight line section, or a corner can be configured to change the extension direction of the condensation section 303 .

[0066] When the condensation section 303 is set as a straight section, since the distance between the end point of the insulation section 302 and the condensation section 303 is short, the length of the condensation section 303 is small, the contact area between the condensation section 303 and the air at the main control board 2 is small, and the heat exchange efficiency is correspondingly small, and it is impossible to ensure that the temperature at the main control board 2 remains above the dew point temperature of the humid hot air.

[0067] When the condensing section 303 is provided with a corner to change the extension direction, the length of the condensing section 303 can be appropriately increased, thereby improving the heat exchange efficiency between the condensing section 303 and the air at the main control board 2 .

[0068] In order to ensure the heat exchange efficiency of the condensation section 303, the condensation section 303 of the heat pipe 3 of the present invention includes a second bending section 3031 and a second connecting section 3032 connecting the insulation section 302 and the second bending section 3031;

[0069] The second bending section 3031 is provided with a plurality of U-shaped bends, which fully utilizes the space on the upper part of the body 4, and ensures the efficiency of heat exchange between the condensation section 303 and the air at the main control board 2 by increasing the length of the condensation section 303, thereby ensuring that the temperature at the main control board 2 is maintained above the dew point temperature of the humid hot air, thereby preventing the humid hot air from condensing here.

[0070] In one embodiment of the present invention, the starting section of the second bending section 3031 is arranged parallel to the ground, and the opening of the U-shaped bend in the second bending section 3031 faces left or right, and the second bending section 3031 extends in the vertical direction.

[0071] In this embodiment, if the horizontal width of the second bending section 3031 is large, and the distance between the end of the second bending section 3031 and the display screen of the main control board 2 is small, the heat released by the condensation section 303 can ensure that the temperature at the display screen is above the dew point temperature of the humid hot air, thereby avoiding condensation of the humid hot air; if the horizontal width of the second bending section 3031 is small, and the distance between the end of the second bending section 3031 and the display screen of the main control board 2 is large, the heat released by the condensation section 303 can only ensure that the temperature at the current position is above the dew point temperature of the humid hot air, avoiding condensation of the humid hot air at the current position, thereby avoiding a short circuit at the current position due to condensed water droplets, but the heat released by the condensation section 303 cannot ensure that the temperature at the display screen is above the dew point temperature of the humid hot air, and condensed water droplets may still be generated at the display screen, reducing the user experience.

[0072] To avoid the situation of the above-mentioned embodiment, in another embodiment of the present invention, the starting section and the ending section of the second bending section 3031 are both arranged perpendicular to the ground. At this time, the opening of the U-shaped bend in the second bending section 3031 is facing upward or downward, and the second bending section 3031 extends in a horizontal direction, that is, extends in a direction close to the other end of the main control board 2.

[0073] In this embodiment, since the main body of the second bending section 3031 extends toward the other end of the main control board 2, no matter whether the terminal section of the second bending section 3031 extends upward or downward, the distance between the terminal section of the second bending section 3031 and the display screen is relatively close, and the heat released by the condensation section 303 can ensure that the temperature at the display screen is greater than the dew point temperature of the humid hot air, thereby avoiding the condensation of humid hot air at the display screen, fully ensuring the user experience.

[0074] Furthermore, in this embodiment, the horizontal length of the second bending section 3031 is greater than or equal to 1 / 2 of the length of the main control board 2. Since the condensation section 303 is longer and has a larger contact area with the air at the main control board 2, the heat exchange efficiency between the condensation section 303 and the air at the main control board 2 is higher, which can ensure that the temperature at the display screen is above the dew point temperature of the humid hot air and prevent the humid hot air from condensing on the display screen. On the other hand, the longer condensation section 303 can fully release the heat absorbed by the evaporation section 301, thereby ensuring that the overall temperature at the main control board 2 is maintained above the dew point temperature of the humid hot air, and preventing the humid hot air from condensing here and causing a short circuit.

[0075] When the spacing of the U-shaped bends in the second bending section 3031 is too large, due to the limited space at the main control board 2, the length of the second bending section 3031 is small, and the length of the condensing section 303 is also correspondingly small. At this time, the heat exchange efficiency between the condensing section 303 and the air at the main control board 2 is low, and it cannot be guaranteed that the air temperature at the main control board 2 is above the dew point temperature of the humid hot air, and the heat of the compressor 1 cannot be dissipated in time; when the spacing of the U-shaped bends in the second bending section 3031 is too small, the length of the second bending section 3031 is correspondingly long, and the length of the condensing section 303 is also correspondingly long. At this time, although the condensing section 303 can ensure that the temperature at the main control board 2 is above the dew point temperature of the humid hot air, an excessively long condensing section 303 may cause waste of materials.

[0076] Therefore, in the present invention, the distance between the U-bends of the second bending section 3031 is preferably 2%-5% of the length of the main control board 2. At this time, the length of the condensation section 303 can ensure the heat exchange efficiency with the air at the main control board 2 without causing waste of materials.

[0077] In one embodiment of the present invention, the U-bend spacing of the second bending section 3031 is the same as the U-bend spacing of the first bending section 3011 , so as to ensure the production efficiency of the heat pipe 3 .

[0078] The insulation section 302 provides a channel for the gaseous medium to diffuse from the evaporation section 301 to the condensation section 303. The medium liquefied in the condensation section 303 will also flow back to the evaporation section 301 through the insulation section 302. Therefore, the shorter the insulation section 302 is, the higher the heat transfer efficiency of the heat pipe 3 is.

[0079] In the present invention, the heat-insulating section 302 is set as a straight section, and the heat-insulating section 302 is perpendicular to the ground, so that the distance between the evaporation section 301 and the condensation section 303 is the shortest, thereby ensuring the heat transfer efficiency of the heat pipe 3.

[0080] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A drying device for waste heat utilization, characterized in that: include: Body; A heating device, wherein the heating device is arranged inside the machine body; A main control board, which is arranged on the upper part of the machine body; The heat transfer device is used to transfer the heat generated by the heat generating device during the operation phase to the main control board to heat the air at the main control board.

2. The drying equipment for waste heat utilization according to claim 1, characterized in that: The heating device is the refrigerant flowing out of the condenser, and the heat transfer device is the refrigerant pipeline connecting the condenser and the throttling device.

3. The drying equipment for waste heat utilization according to claim 1, characterized in that: The heat transfer device is a heat pipe, which includes an evaporation section, a condensation section and an insulation section arranged therebetween, wherein the evaporation section is arranged on one side of the heating device, and the condensation section is arranged on one side of the main control board; The heating device includes a compressor and / or a motor.

4. The drying equipment for waste heat utilization according to claim 3, characterized in that: It also includes a heat dissipation fan for cooling the heating device, and the evaporation section of the heat pipe is arranged on one side of the air outlet of the heat dissipation fan.

5. The drying equipment for waste heat utilization according to claim 3, characterized in that: The evaporation section includes a first bending section and a first connecting section connecting the insulation section and the first bending section; The first bending section is provided with a plurality of U-shaped bends.

6. The drying equipment for waste heat utilization according to claim 5, characterized in that: The height of the starting section of the first bending section is consistent with the height of the bottom of the heating device; The height of the terminal section of the first bending section is consistent with the height of the top of the heating device.

7. The drying equipment for waste heat utilization according to claim 5, characterized in that: The condensing section includes a second bending section and a second connecting section connecting the heat-insulating section and the second bending section; The second bending section is provided with a plurality of U-shaped bends.

8. The drying equipment for waste heat utilization according to claim 7, characterized in that: The horizontal length of the second bending section is greater than or equal to 1 / 2 of the length of the main control board.

9. The drying equipment for waste heat utilization according to claim 7, characterized in that: The distance between the U-shaped bends in the second bending section is 2%-5% of the length of the main control board, and the distance between the U-shaped bends in the first bending section is the same as the distance between the U-shaped bends in the second bending section.

10. A drying device for waste heat utilization according to any one of claims 1 to 9, characterized in that: The thermal insulation section is a straight line section.

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