Drying structure of air supply unit
By using a double-layer structure of inner and outer shells and a thermally conductive sealant layer, the problem of sealing leakage in vehicle air supply systems in cold environments is solved, improving sealing performance and desiccant regeneration, extending service life and reducing costs.
Patent Information
- Application Number
- CN202422776639.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-11-13
AI Technical Summary
Existing vehicle-mounted air supply systems lose their sealing performance due to thermal expansion and contraction in harsh, cold environments, leading to gas leakage and affecting the drying effect.
The drying structure adopts a double-layer structure with inner and outer shells. The shell is fixedly connected to the distribution valve assembly, and an adhesive layer is formed between the inner and outer shells. Combined with a thermally conductive sealing layer and a sealing ring, the sealing performance is enhanced. The heat generated by the motor shell is used to heat the desiccant to achieve recycling.
It improves the sealing performance of the drying structure in harsh, cold environments, extends its service life, reduces costs, simplifies the assembly process, and enables the regeneration and reuse of the desiccant.
Smart Images
Figure CN223716790U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to a gas drying structure of a gas supply unit. BACKGROUND
[0002] At present, the drying of the existing vehicle-mounted gas supply system is often realized by connecting a drying tank to one side of the gas supply unit, and the gas inlet and outlet of the drying tank are opposite to and communicate with the exhaust port and the gas return port of the gas supply unit, so that the gas flowing in the gas supply unit is dried. The gas inlet and outlet of the drying tank are sealed by a sealing ring between the valve block of the distribution valve on the gas supply unit.
[0003] According to the above technical scheme, in a severe cold environment, the sealing ring often loses the original sealing performance due to thermal expansion and cold contraction. After the sealing performance is damaged, the gas is prone to leak at the gas inlet or the exhaust port of the drying tank. CONTENT OF THE UTILITY MODEL
[0004] The application aims to provide a gas supply unit drying structure with excellent sealing performance and applicable to severe cold environments.
[0005] The application provides a gas supply unit drying structure adopting the following technical scheme:
[0006] A gas supply unit drying structure comprises a shell mounted on one side of a distribution valve assembly, the shell is sealed and fixed between the shell and the distribution valve assembly, the shell has a drying agent therein, the distribution valve assembly is provided with a gas inlet hole and a gas outlet hole in communication with the interior of the shell, and the shell comprises an inner shell and an outer shell covered on the inner shell, and a first adhesive layer is filled between the inner shell and the outer shell.
[0007] By adopting the above technical scheme, the shell of the drying structure is sealed and fixed on the distribution valve assembly, instead of the pipeline connection between the drying tank and the valve block of the distribution valve in the prior art. In the application, the gas inlet hole and the gas outlet hole required by the drying agent are arranged on the distribution valve assembly. The gas enters the shell through the gas inlet hole, is dried by the drying agent, and is then discharged to the outside of the drying structure through the gas outlet hole. In addition, the shell is sealed between the shell and the distribution valve assembly. The shell adopts a double-layer structure design of the inner shell and the outer shell, and the first adhesive layer is formed by injecting glue between the inner shell and the outer shell, replacing the sealing ring sealing technology in the prior art, and improving the sealing performance of the drying structure. Therefore, the drying mechanism can be applied to various severe cold environments, has excellent low-temperature resistance, and has a long service life.
[0008] Optionally, the shell is provided with a gas inlet hole in communication with the gas inlet hole and a gas outlet hole in communication with the gas outlet hole, and a first sealing ring is sleeved on the gas inlet hole and the gas outlet hole.
[0009] By adopting the technical scheme, the first adhesive layer is usually injected between the inner shell and the outer shell by injection, the air inlet and the air outlet on the shell are respectively connected to the air inlet hole and the air outlet hole on the distribution valve assembly, and the connection is sealed by the first sealing ring, so that the first adhesive layer can be prevented from flowing into the air inlet hole and the air outlet hole during the unformed stage of injection, the air inlet and the air outlet of the shell dry structure are ensured to be unobstructed, and are not affected by the injection process of the first adhesive layer.
[0010] Optionally, the dry structure further comprises a second adhesive layer, the second adhesive layer seals the gap between the shell and the distribution valve assembly, and the second adhesive layer is a heat-conducting sealing adhesive layer.
[0011] By adopting the technical scheme, the second adhesive layer not only seals the gap between the shell and the distribution valve assembly, but further, the second adhesive layer is a heat-conducting sealing adhesive layer, can conduct heat generated by the elements in the distribution valve assembly to the shell, and heat the desiccant in the shell, thereby facilitating the desorption and regeneration of the desiccant in the shell, and realizing the regeneration and utilization of the desiccant.
[0012] Optionally, one side of the distribution valve assembly is provided with a motor shell, the motor shell is located in the shell, a third adhesive layer is arranged between the desiccant and the motor shell, and the third adhesive layer is a heat-conducting sealing adhesive layer.
[0013] By adopting the technical scheme, the motor is installed in the motor shell, and the motor generates a large amount of heat during operation. Correspondingly, part of the heat energy can be transferred to the desiccant through the heat-conducting effect of the third adhesive layer, the desiccant is heated, and the desorption and regeneration of the desiccant are facilitated, and the regeneration and utilization of the desiccant are realized.
[0014] Optionally, a second sealing ring is arranged between the motor shell and the distribution valve assembly.
[0015] By adopting the technical scheme, the second sealing ring is used to seal the gap between the motor shell and the distribution valve assembly, so that the glue in the first adhesive layer can be prevented from seeping into the gap between the motor shell and the distribution valve assembly during the injection process, and the motor can be effectively protected.
[0016] Optionally, a third sealing ring is arranged between the outer shell and the distribution valve assembly.
[0017] By adopting the technical scheme, the third sealing ring seals the gap at the connection between the outer shell and the distribution valve assembly, strengthens the sealing between the dry structure and the distribution valve assembly, and also prevents the glue in the first adhesive layer from seeping out of the shell during the injection process.
[0018] Optionally, a fourth sealing ring is arranged between the inner shell and the distribution valve assembly.
[0019] By adopting the above technical solution, the fourth sealing ring is used to seal the gap at the connection between the inner shell and the distribution valve assembly. In addition, it also prevents the glue from seeping into the inner shell from the gap during the glue injection process.
[0020] In summary, this application includes at least one of the following beneficial technical effects:
[0021] 1. Improved sealing connection between the drying structure and the distribution valve assembly results in better sealing performance, making it suitable for various harsh and cold environments. It also exhibits excellent low-temperature resistance and extends the service life of the drying structure.
[0022] 2. Compared with the existing method of fixing the dryer and the distribution valve assembly with bolts, this application uses adhesive bonding to reduce the risk of loosening or leakage of the seal ring caused by long-term failure of the threaded connection.
[0023] 3. The shell adopts a double-layer structure design with inner and outer shells, and glue is injected between the inner and outer shells to form the first adhesive layer, which plays a role in protecting the desiccant and has good temperature resistance. Compared with the existing drying tank structure, the shell structure of this application is simplified, the cost requirement is low, and the assembly process is simple.
[0024] 4. The motor housing is encased within the drying structure, and a third adhesive layer is provided between the motor housing and the desiccant. This significantly reduces the requirements for the corrosion resistance of the motor housing, lowers costs, and also significantly reduces the radiated noise of the motor. Attached Figure Description
[0025] Figure 1 This is an exploded illustration of an embodiment of this application. Figure 1 ;
[0026] Figure 2 This is a cross-sectional schematic diagram of an embodiment of this application, used to illustrate the internal structure of the shell;
[0027] Figure 3 This is an exploded illustration of an embodiment of this application. Figure 2 It is used to demonstrate the structural shape of the fourth sealing ring, the third sealing ring, and the second adhesive layer.
[0028] In the diagram, 1 is the housing; 101 is the inner housing; 102 is the outer housing; 2 is the first adhesive layer; 3 is the air inlet; 4 is the air outlet; 5 is the first sealing ring; 7 is the air inlet hole; 8 is the air outlet hole; 9 is the distribution valve assembly; 901 is the distribution valve block; 902 is the motor; 10 is the motor housing; 11 is the bolt; 12 is the third adhesive layer; 13 is the second sealing ring; 14 is the second adhesive layer; 15 is the fourth sealing ring; 16 is the third sealing ring; 17 is the desiccant; 18 is the drying chamber; 19 is the fastening screw; 20 is the through hole; and 21 is the threaded hole. DETAILED DESCRIPTION
[0029] The application will be further described in detail below with reference to the accompanying drawings. Figure 1 - The accompanying drawings Figure 3 , which are intended to further explain the application.
[0030] Embodiment: A drying structure of a gas supply unit, referring to Figure 1 and Figure 2 , the housing 1 is installed on one side of the distribution valve assembly 9, in this application, the distribution valve assembly 9 includes a distribution valve block 901 and a motor 902 installed on one side of the distribution valve block 901, a motor shell 10 is covered on the motor 902, and the housing 1 is covered on the motor shell 10; the housing 1 includes a drying cavity 18, which is filled with a drying agent 17, and the drying agent 17 is selected from a molecular sieve, the distribution valve block 901 is made of cast iron, steel or aluminum alloy, and the distribution valve block 901 is provided with an air inlet hole 7 and an air outlet hole 8, the side of the housing 1 facing the distribution valve block 901 is provided with an air inlet 3 communicating with the air inlet hole 7 and an air outlet 4 communicating with the air outlet hole 8, and the air inlet 3 and the air outlet 4 both communicate with the drying cavity 18, when the gas supply unit is working, the air source enters the drying cavity 18 from the air inlet hole 7 and the air inlet 3, is dried by the drying agent 17, and is discharged from the air outlet 4 to enter the valve path inside the distribution valve block 901 through the air outlet hole 8 on the distribution valve block 901.
[0031] Referring to Figure 1 and Figure 2 , the air inlet 3 and the air outlet 4 on the housing 1 are both cylindrical structures and are inserted and fixed with the air inlet hole 7 and the air outlet hole 8 on the distribution valve block 901; the air inlet 3 and the air outlet 4 are both sleeved with a first sealing ring 5, the first sealing ring 5 is an O-shaped ring, and is used to seal the gap between the air inlet 3 and the air inlet hole 7 and the gap between the air outlet 4 and the air outlet hole 8.
[0032] Referring to Figure 1 and Figure 3 , the motor shell 10 is covered on the motor 902, and is fixed and installed on the side of the distribution valve block 901 by means of bolts 11, and the motor shell 10 protrudes from the side of the distribution valve block 901; a second sealing ring 13 is arranged between the motor shell 10 and the distribution valve block 901, the second sealing ring 13 is an O-shaped ring, and is used to seal the assembly gap between the motor shell 10 and the distribution valve block 901, so as to realize the sealing cooperation between the motor shell 10 and the distribution valve block 901.
[0033] Referring to Figure 2The desiccant 17 in the shell 1 is arranged around the motor shell 10 and covers the motor shell 10, and a third adhesive layer 12 is arranged between the desiccant 17 and the motor shell 10. The third adhesive layer 12 is a heat-conducting sealing adhesive layer. The third adhesive layer 12 is formed by injecting glue with polyurethane or epoxy resin as the glue onto the surface of the motor shell 10. Since the polyurethane or epoxy resin has good heat conductivity, the heat generated by the motor 902 in the motor shell 10 can be conducted to the desiccant 17 to heat the desiccant 17, thereby facilitating the desorption and regeneration of the desiccant 17 and further facilitating the regeneration and utilization of the desiccant 17.
[0034] With reference to Figure 1 and Figure 3 A second adhesive layer 14 is arranged between the shell 1 and the distribution valve block 901. The second adhesive layer 14 is a heat-conducting sealing adhesive layer. The second adhesive layer 14 is formed by injecting glue with polyurethane or epoxy resin as the glue into the gap between the shell 1 and the distribution valve block 901. The second adhesive layer 14 is used to fix the connection between the shell 1 and the distribution valve block 901 and can seal the gap between the shell 1 and the distribution valve block 901. In addition, the distribution valve block 901 is provided with mechanical elements and electronic elements. The mechanical elements can be a compressor or a valve core, and the electronic elements can be an electromagnetic coil. The mechanical and electronic elements in the distribution valve assembly 9 generate heat when working. The second adhesive layer 14 has a certain heat conductivity, and the heat generated by the distribution valve block 901 can be conducted to the shell 1. The shell 1 is made of plastic, which can transmit heat to the desiccant 17 to heat the desiccant 17, thereby facilitating the desorption and regeneration of the desiccant 17 and further facilitating the regeneration and utilization of the desiccant 17.
[0035] With reference to Figure 3 Further, the shell 1 and the distribution valve block 901 can be fixedly connected by fastening screws 19. The shell 1 is provided with through holes 20, and the distribution valve block 901 is provided with threaded holes 21. The threaded holes 21 can be distributed on the side of the distribution valve block 901 facing the shell 1. The fastening screws 19 are screwed into the threaded holes 21 of the distribution valve block 901 after passing through the through holes 20, thereby achieving the locking and fixing of the shell 1 and the distribution valve block 901.
[0036] With reference to Figure 1 and Figure 3, the shell 1 includes an inner shell 101 and an outer shell 102, the inner shell 101 is a box body structure, the outer shell 102 is a square solid structure with both ends through, the outer shell 102 is sleeved on the inner shell 101, and the outer shell 102 and the inner shell 101 are filled with a first adhesive layer 2, the first adhesive layer 2 is formed by using polyurethane or epoxy resin as glue to be injected into the gap between the inner shell 101 and the outer shell 102, and the first adhesive layer 2 realizes the fixation and sealing between the inner shell 101 and the outer shell 102.
[0037] Referring to Figure 1 and Figure 3 Further, a third sealing ring 16 is arranged between the inner edge of the outer shell 102 and the side surface of the distribution valve block 901, the third sealing ring 16 is used for sealing the gap between the outer shell 102 and the distribution valve block 901, and also prevents the glue from leaking out of the shell 1 during the injection process of the first adhesive layer 2;
[0038] Similarly, a fourth sealing ring 15 is arranged between the inner edge of the inner shell 101 and the side surface of the distribution valve block 901, the fourth sealing ring 15 is used for sealing the gap between the inner shell 101 and the distribution valve block 901, and also prevents the glue from leaking into the drying cavity 18 during the injection process of the first adhesive layer 2.
[0039] The implementation principle of the embodiment of the application is that the shell 1 of the drying structure is installed on one side of the distribution valve assembly 9 and covers the motor shell 10, the airflow enters the drying cavity 18 from the air inlet hole 7 and the air inlet 3, the molecular sieve desiccant 17 filters and adsorbs the water vapor in the airflow, and the airflow after the molecular sieve drying enters the distribution valve assembly 9 from the air outlet 4 and the air outlet hole 8, in the process of working of the distribution valve assembly 9 of the supply unit, the heat generated by the element and the heat energy generated by the motor 902 respectively pass through the heat transfer of the second adhesive layer 14 and the third adhesive layer 12 and enter the drying cavity 18, which plays a heating role on the desiccant 17 in the drying cavity 18, thereby being beneficial to the desorption and regeneration of the desiccant 17, and realizing the regeneration and utilization of the desiccant 17.
[0040] The embodiments of the specific embodiment are the preferred embodiments of the application, and are not limited to the protection scope of the application, wherein the same parts are indicated by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.
Claims
1. A drying structure for an air supply unit, comprising a housing (1) mounted on one side of a distribution valve assembly (9), characterized in that: The housing (1) is sealed and fixed to the distribution valve assembly (9). The housing (1) contains a desiccant (17). The distribution valve assembly (9) is provided with an air inlet (7) and an air outlet (8) communicating with the interior of the housing (1). The housing (1) includes an inner shell (101) and an outer shell (102) covering the inner shell (101). A first adhesive layer (2) is filled between the inner shell (101) and the outer shell (102).
2. The drying structure of a gas supply unit according to claim 1, characterized in that: The housing (1) is provided with an air inlet (3) communicating with the air inlet (7) and an air outlet (4) communicating with the air outlet (8). A first sealing ring (5) is fitted on both the air inlet (3) and the air outlet (4).
3. The drying structure of the gas supply unit according to claim 1, characterized in that: The drying structure also includes a second adhesive layer (14), which seals the gap between the housing (1) and the distribution valve assembly (9). The second adhesive layer (14) is a thermally conductive sealing layer.
4. The drying structure of a gas supply unit according to claim 1, characterized in that: The distribution valve assembly (9) has a motor housing (10) on one side, the motor housing (10) is located inside the housing (1), and a third adhesive layer (12) is provided between the desiccant (17) and the motor housing (10), the third adhesive layer (12) being a thermally conductive sealing adhesive layer.
5. The drying structure of an air supply unit according to claim 4, characterized in that: A second sealing ring (13) is provided between the motor housing (10) and the distribution valve assembly (9).
6. The drying structure of a gas supply unit according to claim 1, characterized in that: A third sealing ring (16) is provided between the housing (102) and the distribution valve assembly (9).
7. The drying structure of a gas supply unit according to claim 1 or 6, characterized in that: A fourth sealing ring (15) is provided between the inner shell (101) and the distribution valve assembly (9).