Vehicle air conditioner evaporator shell capable of preventing shell joint from shrinking and deforming
By setting a bend and a reinforcement plate in the shell structure, the shrinkage deformation problem caused by temperature difference at the shell connection is solved, and the low-cost and easy-to-promote anti-deformation effect is achieved.
Patent Information
- Application Number
- CN202422356134.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-26
AI Technical Summary
The existing automotive air-conditioning evaporator shells are flange shrinking and deformation due to temperature differences during the mold release and cooling process, which affects the sealing performance. The traditional fixed tooling is costly and difficult to promote.
The bent portion and reinforcement plate are provided in the shell structure to increase the strength of the flange of the long horizontal strip by injection molding to avoid deformation.
Effectively prevent shrinkage and deformation at the shell connection, reduce costs, and facilitate large-scale application.
Smart Images
Figure CN223064110U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of automotive air conditioners, and particularly relates to an evaporator housing for a vehicle air conditioner that can prevent shrinkage and deformation at the housing connection. Background Art
[0002] The automotive air conditioner evaporator assembly (referred to as NBM1) is a crucial component in the automotive air conditioning system and has a significant impact on the refrigeration effect of the air conditioner. It utilizes the fact that liquid low-temperature refrigerant is easy to evaporate under low pressure, transforms into vapor, and absorbs the heat of the medium to be cooled, thereby achieving the refrigeration purpose. The front evaporator assembly includes an air inlet box housing and left and right housing components connected in sequence. The air inlet box housing is composed of an upper housing and a lower housing connected together. A blower is assembled on one side of the air inlet box housing, and a heat exchange device is assembled on the other side. After the blower is started, cold air enters one side of the heat exchange device, and cold or hot air is blown out from the air outlets on the left and right housing components and enters the cab. The left and right housings are correspondingly assembled on the side of the air inlet box housing where the heat exchange device is installed. A U-shaped flanging for connecting with the left and right housing components is provided at the upper end of the lower housing of the air inlet box housing. The U-shaped flanging is composed of side flangings on the left and right sides and a long horizontal bar flanging located between the two side flangings. A bayonet matching with the U-shaped flanging is provided at the position of the left and right housing components corresponding to the long horizontal bar flanging. A plurality of connecting seats are also provided on the outer side of the lower housing near the long horizontal bar flanging. Internal threaded columns corresponding to the connecting seats one by one are provided on the guest housing components. The two corresponding internal threaded columns and the connecting seats are connected and fixed through fasteners (as Figure 1 shown).
[0003] The existing air inlet box housing and left and right housing components are both injection molded parts. During the injection molding process, a cooling water circuit is provided on the injection mold to cool the injection molded parts. After injection molding is completed, the injection molded parts are demolded from the mold and cooled. Since the length of the long horizontal bar flanging of the lower housing is relatively long, and the injection molded parts still have a high temperature of seventy degrees after demolding, with a large temperature difference from the indoor and outdoor temperatures, the flanging position is prone to shrinkage and deformation inward during demolding and cooling, resulting in the inability of the flanging to be correspondingly connected with the bayonet, seriously affecting the sealing performance of the connection between the left and right housing components and the air inlet box housing. To solve the above problems, usually, a shaping tooling is directly arranged inside the injection molded parts of the air inlet box housing when the injection molded parts of the air inlet box housing are cooled. After the injection molded parts are maintained in the current state for a certain period of time, the shaping tooling is taken out from the inside. The means of preventing the flanging of the injection molded parts from deforming in this way is time-consuming and laborious, and a large number of shaping toolings need to be manufactured, increasing the manufacturing cost and cannot be widely promoted and applied. Summary of the Invention
[0004] In view of the above deficiencies in the prior art, the purpose of the present utility model is to provide a vehicle air conditioner evaporator housing that can prevent shrinkage deformation at the connection of the housing, and solve the problem that the flanging at the connection of the existing air inlet box housing injection molded parts is prone to shrinkage deformation due to the environmental temperature difference during the demolding and cooling process.
[0005] To solve the above technical problems, the present utility model adopts the following technical solutions:
[0006] A vehicle air conditioner evaporator housing that can prevent shrinkage deformation at the connection of the housing, including an air inlet box housing and left and right housing components. The air inlet box housing is composed of an upper housing and a lower housing connected together. The left and right housing components are composed of a left housing and a right housing. At the upper end of the lower housing, there is a U-shaped flanging connected to the left and right housing components. The U-shaped flanging consists of side flangings on the left and right sides and a long horizontal bar flanging located between the two side flangings. There is a bending portion near the long horizontal bar flanging of the lower housing. The bending portion is arranged along the length direction of the long horizontal bar flanging. On the outer end face of the bending portion, there is a reinforcing plate integrally formed with it and arranged along its length direction. Along the length direction of the reinforcing plate, a plurality of reinforcing rib plates and connecting seats integrally formed with it are arranged at intervals. The reinforcing rib plates extend towards the long horizontal bar flanging. In this way, by setting a bending portion near the long horizontal bar flanging that is prone to shrinkage deformation and setting a reinforcing plate at the bending portion, the bending portion can decompose part of the deformation, and the reinforcing plate can further increase the strength of the long horizontal bar flanging position, forming a reverse pulling force to support the bending portion and the long horizontal bar flanging, so as to avoid deformation at the long horizontal bar flanging position even under a large temperature difference. This way of realizing the prevention of shrinkage deformation through structural improvement has a lower cost compared with the traditional method of using a sizing tooling to prevent deformation, and can be integrally formed by injection molding, which is convenient for popularization and application.
[0007] Further, the bending portion is an arc-shaped bend. In this way, the bending portion is an arc-shaped bend, which has a more beautiful shape. At the same time, the arc-shaped bend makes the transition between it and the lower part of the housing more natural and is not prone to water accumulation.
[0008] Further, the reinforcing plate is composed of multiple U-shaped connecting plates and connecting lugs connected between two adjacent U-shaped connecting plates. Reinforcing ribs are arranged on the connecting lugs. The connecting lugs and the reinforcing ribs form the connecting seats. In this way, the main body part of the connecting seat and the U-shaped connecting plates together form the reinforcing plate, with a compact structure and no interference between the reinforcing plate and the connecting seats.
[0009] Further, the reinforcing plate is perpendicular to the lower housing and has a thickness greater than or equal to the thickness of the air inlet box housing. In this way, the reinforcing plate has a proper thickness and good strength, and can form sufficient reverse pulling force during the shrinkage deformation of the lower housing injection molded part to avoid shrinkage deformation of the long horizontal bar flanging. Description of the Drawings
[0010] Figure 1 It is a schematic assembly structure diagram of an automotive air conditioner evaporator housing (removing the right housing) in the prior art;
[0011] Figure 2 It is a three-dimensional structure diagram of an automotive air conditioner evaporator housing in the embodiment;
[0012] Figure 3 It is a three-dimensional structure diagram of an air inlet box housing in the embodiment;
[0013] Figure 4 It is a side structure diagram of an air inlet box housing in the embodiment. Detailed implementation manners
[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the present invention claimed, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0015] It should be noted that like reference numerals and letters refer to like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance. In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0016] Such as Figures 2 - 4As shown in the figure, this embodiment provides a vehicle air conditioner evaporator housing that can prevent shrinkage deformation at the connection of the housing, including an air inlet box housing 1 and left and right housing assemblies 2. The air inlet box housing 1 is composed of an upper housing 11 and a lower housing 12 connected together. The left and right housing assemblies 2 are composed of a left housing and a right housing (the right housing is hidden in the figure). At the upper end of the lower housing 12, there is a U-shaped flange 13 connected to the left and right housing assemblies 2. The U-shaped flange 13 consists of side flanges on the left and right sides and a long horizontal bar flange 131 located between the two side flanges. There is a bending portion 121 near the long horizontal bar flange 131 of the lower housing 12. The bending portion 121 is arranged along the length direction of the long horizontal bar flange 131. On the outer end face of the bending portion 121, there is a reinforcing plate 14 integrally formed with it and arranged along its length direction. Along the length direction of the reinforcing plate 14, a plurality of reinforcing rib plates 15 and connecting seats 16 integrally formed with it are arranged at intervals. The reinforcing rib plates 15 extend towards the long horizontal bar flange 131, and the side ends of the reinforcing rib plates 15 are connected to the reinforcing plate 14 and the bending portion 121. In this way, by setting the bending portion 121 near the long horizontal bar flange 131 where shrinkage deformation is likely to occur and setting the reinforcing plate 14 at the bending portion 121, the bending portion 121 can decompose part of the deformation, and the reinforcing plate 14 can further increase the strength of the position of the long horizontal bar flange 131, forming a reverse pulling force to support the bending portion 121 and the long horizontal bar flange 131, so that the deformation of the position of the long horizontal bar flange 131 can be avoided even under a large temperature difference. This way of realizing the prevention of shrinkage deformation through structural improvement has a lower cost compared with the traditional method of using a sizing tooling to prevent deformation, and can be integrally formed by injection molding, which is convenient for popularization and application.
[0017] Further, the bending portion 121 is an arc-shaped bend. In this way, the bending portion 121 is an arc-shaped bend, which has a more beautiful shape. At the same time, the arc-shaped bend makes the transition between it and the part of the lower housing more natural, and it is not easy to accumulate water.
[0018] As Figure 4 shown in the figure, the reinforcing plate 14 in this embodiment is composed of multiple U-shaped connecting plates and connecting lugs connected between two adjacent U-shaped connecting plates. There are reinforcing ribs on the connecting lugs, and the connecting lugs and the reinforcing ribs form the connecting seats 16. In this way, the main part of the connecting seat 16 and the U-shaped connecting plates together form the reinforcing plate 14, with a compact structure, and there will be no interference between the reinforcing plate 14 and the connecting seats 16.
[0019] Further, the reinforcing plate 14 is perpendicular to the lower housing 12, and its thickness is greater than or equal to the thickness of the air inlet box housing 1. In this way, the reinforcing plate 14 has a proper thickness and good strength, and can form enough reverse pulling force during the shrinkage deformation of the injection molded part of the lower housing 12 to avoid the shrinkage deformation of the long horizontal bar flange 131.
[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than limiting them. Those of ordinary skill in the art should understand that any modifications or equivalent replacements made to the technical solutions of the present utility model without departing from the purpose and scope of the technical solutions should be covered within the scope of the claims of the present utility model.
Claims
1. An automotive air conditioner evaporator housing capable of preventing shrinkage deformation at the housing connection, comprising an air inlet box housing and left and right housing assemblies. The air inlet box housing is formed by connecting an upper housing and a lower housing. The left and right housing assemblies are composed of a left housing and a right housing. A U-shaped flanging for connecting with the left and right housing assemblies is provided at the upper end of the lower housing. The U-shaped flanging consists of side flangings on the left and right sides and a long horizontal bar flanging located between the two side flangings. It is characterized in that, The lower housing has a bent portion near the flange of the long horizontal strip. The length of the bent portion is arranged along the length direction of the flange of the long horizontal strip. An integrally formed reinforcing plate is provided on the outer end surface of the bent portion and arranged along its length direction. A plurality of integrally formed reinforcing rib plates and connecting seats are spaced along the length direction of the reinforcing plate. The reinforcing rib plates extend towards the flange of the long horizontal strip.
2. The vehicle air conditioner evaporator housing capable of preventing shrinkage deformation at the housing connection according to claim 1, characterized in that, The bent portion is an arc-shaped bend.
3. The vehicle air conditioner evaporator housing capable of preventing shrinkage deformation at the housing connection according to claim 1 or 2, characterized in that, The reinforcing plate is composed of multiple U-shaped connecting plates and connecting lugs connected between two adjacent U-shaped connecting plates. Reinforcing ribs are provided on the connecting lugs, and the connecting lugs and the reinforcing ribs form the connecting seats.
4. The vehicle air conditioner evaporator housing capable of preventing shrinkage deformation at the housing connection according to claim 3, characterized in that, The reinforcing plate is perpendicular to the lower housing and has a thickness greater than or equal to the thickness of the air inlet box housing.