A dryer with heating function

Abstract

This application relates to the technical field of moisture removal in dryers, and more particularly to a dryer with a heating function. The dryer includes a housing containing a desiccant, and a heating assembly for accelerating dehydration of the desiccant is fixedly installed outside the housing. The heating assembly includes a heating element covering the outer periphery of the housing. A clearance groove is formed between the first and second ends of the heating element to prevent short circuits. The first end of the heating element has a first connecting portion, and the second end has a second connecting portion. The first and second connecting portions engage with each other to form the clearance groove. This application, by incorporating a heating assembly, can accelerate the dehydration of the desiccant, solving the problem of low dehydration efficiency in existing drying technologies.

Description

Technical Field

[0001] This application relates to the technical field of moisture removal in dryers, and in particular to a dryer with a heating function. Background Technology

[0002] Automotive air suspension systems are widely used due to their excellent driving stability and comfort. The system adapts to different road conditions by adjusting the air pressure of the air springs. However, moisture in the air can cause the air springs to freeze at low temperatures, corrode parts, and cause solenoid valves to malfunction. Therefore, equipping the system with an efficient dryer to keep the air dry is the key to the stable operation of the air suspension system.

[0003] like Figure 1 As shown, the dryer 1 includes a housing 111 and a base 121 mounted on the housing 111. The housing 111 and the base 121 together form a first cavity 131 and a second cavity 141 for placing the desiccant. The first cavity 131 and the second cavity 141 are interconnected. The base 121 has an air inlet 122 communicating with the first cavity 131 and an exhaust 123 communicating with the second cavity 141. The desiccant is the core of the dryer 1. It has good adsorption performance at low temperatures, but its regeneration ability is stronger at high temperatures. When the desiccant reaches saturation and needs to be regenerated, the low temperature environment will severely limit its regeneration effect, causing the desiccant to fail to effectively dehydrate, which in turn affects the normal operation of the air suspension system and reduces its service life. Traditional dryers 1 mostly use backflushing to reduce the moisture in the desiccant and achieve the effect of desiccant regeneration, but this method is not effective in low temperature environments, and the desiccant cannot be effectively dehydrated.

[0004] Therefore, a dryer with heating function is needed to effectively improve the regeneration capacity of the desiccant and enhance the reliability and performance of the air suspension system. Utility Model Content

[0005] In order to increase the temperature of the desiccant inside the shell and expel moisture during backflushing, thereby achieving effective regeneration of the desiccant, this application provides a dryer with a heating function.

[0006] This application provides a dryer with a heating function, which adopts the following technical solution: A dryer with a heating function includes a housing containing a desiccant. A heating assembly for accelerating the dehydration of the desiccant is fixedly installed outside the housing. The heating assembly includes a heating element covering the outer periphery of the housing. A clearance groove is formed between the first end and the last end of the heating element to prevent short circuits. The first end of the heating element is provided with a first connecting portion, and the last end of the heating element is provided with a second connecting portion. The first connecting portion and the second connecting portion are engaged to form the clearance groove.

[0007] By adopting the above technical solution, the heating element covers the outer periphery of the shell, which can accelerate the dehydration of the desiccant. An avoidance groove is formed between the first and last ends of the heating element, which can avoid the overlap of the first and last ends of the heating element causing a short circuit. The first connecting part and the second connecting part are in concave-convex fit, which ensures the effective formation of the avoidance groove and improves the alignment of the connection points at both ends of the heating element.

[0008] Optionally, the surface of the housing is provided with positioning protrusions for positioning the heating element along the circumferential position of the housing, and the first and last ends of the heating element are provided with through holes that are adapted to the positioning protrusions.

[0009] By adopting the above technical solution, the positioning protrusions are adapted to the through holes at the front and rear ends of the heating element, respectively, which can position the heating element along the circumferential direction of the shell and ensure accurate installation of the heating element.

[0010] Optionally, the surface of the housing may also be provided with positioning protrusions to position the heating element along the axial position of the housing.

[0011] By adopting the above technical solution, the positioning protrusion is set to achieve the positioning of the heating element along the axial position of the shell.

[0012] Optionally, two positioning protrusions are provided, and they are respectively positioned and engaged with the upper and lower end surfaces of the heating element.

[0013] By adopting the above technical solution, the two positioning protrusions abut against the upper and lower end faces of the heating element, respectively, thereby further improving the accuracy of the heating element's position.

[0014] Optionally, the heating element is covered with an insulating shell for heat preservation.

[0015] By adopting the above technical solution, the heat insulation shell covers the heating body, effectively maintaining the temperature of the heating body and improving the stability of the heating body and the shell.

[0016] Optionally, the inner side of the insulation shell is provided with a clearance groove for the clearance positioning protrusion, and there are two clearance grooves, each corresponding to one of the positions of the two positioning protrusions.

[0017] By adopting the above technical solution and setting the avoidance groove, it is ensured that the insulation shell will not be interfered with by the positioning protrusion during installation, and the axial position of the insulation shell relative to the heating element and the shell can be accurately determined.

[0018] Optionally, the surface of the shell may also be provided with a positioning step that cooperates with the positioning of the insulation shell.

[0019] By adopting the above technical solution, the positioning step can position the axial position of the insulation shell, so that the insulation shell can be stably installed in the predetermined position, ensuring the positional accuracy of the overall heat dissipation structure.

[0020] Optionally, the transition portion of the insulation shell is provided with a thickened section.

[0021] By adopting the above technical solution, the thickened part of the transition section of the insulation shell can enhance the structural strength of the transition section and improve the durability of the insulation shell.

[0022] Optionally, the inner wall of the insulation shell is further provided with a mating groove that matches the positioning protrusion, and the mating groove is evenly distributed along the axial direction of the shell.

[0023] By adopting the above technical solution and with the setting of the groove, the axial position of the insulation shell is further positioned to avoid interference from the positioning protrusion.

[0024] Optionally, the heating element includes a polyimide heating film covering the outer periphery of the outer shell, and the heat-insulating shell includes an integrally injection-molded plastic shell.

[0025] By adopting the above technical solution, the heating element can quickly and evenly transfer heat to the shell, so that the shell is heated evenly, effectively heating the desiccant and accelerating its dehydration. The one-piece injection-molded plastic shell ensures the dehydration effect of the desiccant.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The heating element covers the outer periphery of the shell, which can better heat the desiccant and accelerate the desorption of moisture in the desiccant. The gaps are staggered and Z-shaped to avoid the heating elements overlapping. The positioning protrusions cooperate with the through holes at the front and rear ends of the heating element, thereby accurately positioning the heating element along the circumference of the shell. 2. The gaps of the heating elements are staggered and extend in a Z-shape, which can heat the desiccant more evenly, improve the desiccant desorption effect, and improve the desiccant regeneration effect; 3. The insulation shell covers the heating element, effectively maintaining the temperature of the heating element and enhancing the stability of the heating element and the shell. The top and bottom of the insulation shell extend beyond the heating element, further reducing heat loss. Attached Figure Description

[0027] Figure 1 This is an explosion illustration of an embodiment of this application. Figure 1 This is used to show the placement of the first and second cavities; Figure 2 This is a structural schematic diagram of an embodiment of the present application, used to illustrate the overall structure of the dryer; Figure 3 This is an explosion illustration of an embodiment of this application. Figure 2 This is used to demonstrate the specific structure of the shell, heating element, and insulation shell; Figure 4This is a partial structural diagram of an embodiment of the present application, used to illustrate the positional relationship between the positioning protrusion, the positioning strip, and the positioning step; Figure 5 This is a partial structural diagram of the heating element in an embodiment of this application, used to illustrate the positional relationship between the clearance groove and the through hole; Figure 6 This is a schematic diagram of the structure of the insulation shell in the embodiments of this application, used to show the positional relationship between the mating groove and the avoidance groove.

[0028] Reference numerals: 1. Dryer; 111. Shell; 112. Positioning protrusion; 113. Positioning strip; 121. Base; 122. Air inlet; 123. Exhaust outlet; 131. First cavity; 141. Second cavity; 2. Heating assembly; 211. Heating element; 2111. First connecting part; 2112. Second connecting part; 212. Clearance groove; 213. Through hole; 214. Insulation shell; 2141. Thickened part; 215. Clearance groove; 216. Positioning step; 217. Mating groove; 221. Conductive wire. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0030] Example: A dryer with heating function, reference Figure 1 and Figure 2 The system includes a housing 111 and a base 121. The base 121 is detachably mounted on the end of the housing 111, together forming a first cavity 131 and a second cavity 141. The base 121 has an air inlet 122 communicating with the first cavity 131 and an exhaust 123 communicating with the second cavity 141. A heating assembly 2 is fixedly mounted on the outer periphery of the housing 111. Figure 5The heating component 2 includes a heating element 211 and a conductive wire 221. One end of the conductive wire 221 is electrically connected to an external device, and the other end is electrically connected to the heating element 211. The heating element 211 is heated through the conductive wire 221. The heating element 211 covers the outer periphery of the housing 111 and is encased in a polyimide heating film. The heating element 211 has a composite copper foil conductive layer inside. When powered on, the heating element 211 covers the outer periphery of the housing 111. Through the polyimide heating film, the heating element 211 can evenly transfer heat to the housing 111. A clearance groove 212 is formed between the first and last ends of the heating element 211. The first end of the heating element 211 is provided with a first connecting part 2111, and the last end of the heating element 211 is provided with a second connecting part 2112. The first connecting part 2111 protrudes outward, and the second connecting part 2112 is recessed inward. The first connecting part 2111 and the second connecting part 2112 are in concave-convex fit to form the clearance groove 212. The clearance groove 212 is Z-shaped. The Z-shaped clearance groove 212 makes the first connecting part 2111 at the first end of the heating element 211 and the second connecting part 2112 at the last end staggered and overlapped instead of directly overlapping, which ensures that the heating element 211 covers the entire circumference and avoids short circuits.

[0031] refer to Figure 4 and Figure 5 The surface of the housing 111 has a protruding positioning protrusion 112. The first connecting part 2111 and the second connecting part 2112 of the heating body 211 are both provided with through holes 213. The diameter of the positioning protrusion 112 is slightly smaller than the inner diameter of the through hole 213. The circumferential rotation of the heating body 211 is restricted by the concave and convex positioning. The axial fixation is achieved in conjunction with the positioning protrusion 113 to ensure the positional stability of the heating body 211. The surface of the housing 111 also has a protruding positioning protrusion 113. The positioning protrusion 113 is annular in shape and integrally formed with the housing 111. There are two positioning protrusions 113, which are respectively positioned and cooperate with the upper end face and the lower end face of the heating body 211. The heating body 211 can be positioned from the upper and lower ends to prevent the heating body 211 from moving axially and further improve the positional stability of the heating body 211.

[0032] refer to Figure 2 and Figure 3 The heating element 211 is covered with an insulation shell 214. The insulation shell 214 is made of flame-retardant insulation plastic that is injection molded in one piece. It takes into account both insulation and heat preservation, reducing heat loss to the outside. The top of the insulation shell 214 extends beyond the top of the heating element 211, and the tail of the insulation shell 214 extends beyond the tail of the heating element 211, further reducing heat loss and improving heating efficiency.

[0033] refer to Figure 4 and Figure 6The inner side of the insulation shell 214 is provided with two clearance grooves 215, each corresponding to one of the positions of the two positioning protrusions 113. When the insulation shell 214 is installed, the positioning protrusions 113 are completely embedded in the clearance grooves 215, preventing interference between the insulation shell 214 and the positioning protrusions 113. Figure 3 This allows the insulation shell 214 to be smoothly installed on the outside of the heating element 211 without affecting the positioning function of the positioning protrusion 113 on the heating element 211.

[0034] refer to Figure 2 and Figure 4 The surface of the shell 111 also has a protruding positioning step 216. The positioning step 216 is integrally formed with the shell 111. The top of the positioning step 216 abuts against the bottom of the insulation shell 214. The positioning step 216 can accurately determine the position of the insulation shell 214 in the axial direction of the shell 111, preventing the insulation shell 214 from shifting in the axial direction.

[0035] refer to Figure 2 and Figure 6 The heat insulation shell 214 has a gourd-shaped cross-section to enhance the adhesion between the heating element 211 and the shell 111 and prevent the heating element 211 from shifting around the shell 111. The transition part of the heat insulation shell 214 is provided with a thickened part 2141 to enhance the strength of the transition part of the heat insulation shell 214.

[0036] refer to Figure 4 and Figure 6 The inner wall of the insulation shell 214 is also provided with a mating groove 217. The mating groove 217 is interference-fitted with the positioning protrusion 112, and multiple mating grooves 217 are evenly distributed along the axial direction of the shell 111, which restricts the circumferential rotation of the insulation shell 214, further fixes the position of the insulation shell 214, and enhances the firmness of the insulation shell 214.

[0037] The implementation principle of this application embodiment is as follows: When the dryer 1 is working, the gas is backflushed, the heating element 211 generates heat through the conductive wire 221, and the heat is evenly diffused to the outside of the shell 111, which increases the temperature of the backflushing airflow in the first cavity 131 and the second cavity 141, accelerates the dehydration of the desiccant, promotes the regeneration of the desiccant, and the heat insulation shell 214 covers the heating element 211 to reduce heat loss and further improve the moisture desorption effect of the desiccant.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dryer with a heating function comprising a housing (111) filled with a drying agent, characterized in that: A heating assembly (2) for accelerating the dehydration of the desiccant is fixedly installed on the outside of the housing (111). The heating assembly (2) includes a heating body (211) covering the outer periphery of the housing (111). A relief groove (212) is formed between the first end and the last end of the heating body (211) to prevent short circuit of the heating body (211). The first end of the heating body (211) is provided with a first connecting part (2111), and the last end of the heating body (211) is provided with a second connecting part (2112). The first connecting part (2111) and the second connecting part (2112) are in concave-convex cooperation to form the relief groove (212).

2. The dryer with a heating function according to claim 1, characterized in that: The surface of the housing (111) is provided with a positioning protrusion (112) of the positioning heating body (211) along the circumferential position of the housing (111), and the heating body (211) has through holes (213) at the first and last ends that are adapted to the positioning protrusion (112).

3. The dryer with a heating function according to claim 1, characterized in that: The surface of the housing (111) is also provided with a positioning protrusion (113) for positioning the heating element (211) along the axial position of the housing (111).

4. The dryer with a heating function according to claim 3, characterized in that: Two positioning protrusions (113) are provided and are respectively positioned and engaged with the upper and lower end faces of the heating element (211).

5. The dryer with a heating function according to claim 2, characterized in that: The heating element (211) is covered with an insulation shell (214) for heat preservation.

6. The dryer with a heating function according to claim 5, characterized in that: The inner side of the heat insulation shell (214) is provided with a relief groove (215) for the relief positioning protrusion (113). There are two relief grooves (215) and they correspond one-to-one with the positions of the two positioning protrusions (113).

7. The dryer with a heating function according to claim 5, characterized in that: The surface of the shell (111) is also provided with a positioning step (216) that is positioned to cooperate with the heat insulation shell (214).

8. A dryer with heating function according to claim 5, characterized in that: The transition portion of the insulation shell (214) is provided with a thickened portion (2141).

9. The dryer with a heating function according to claim 5, characterized in that: The inner wall of the heat insulation shell (214) is also provided with a mating groove (217) that is adapted to the positioning protrusion (112), and the mating groove (217) is evenly distributed along the axial direction of the shell (111).

10. The dryer with a heating function according to claim 5, characterized in that: The heating element (211) includes a polyimide heating film covering the outer periphery of the housing (111), and the heat-insulating shell (214) includes an integrally injection-molded plastic shell.

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