Expansion water tank suitable for vehicle air conditioner

Abstract

The utility model discloses an expansion water tank suitable for a vehicle air conditioner, which relates to the technical field of air conditioning equipment and comprises a water tank body formed by splicing a plurality of rectangular plates made of metal. Wherein for two adjacent and mutually vertical rectangular plates, the edge of one rectangular plate is vertically bent towards the outer side to form a bent part, and the edge of the bent part is aligned with the edge of the other rectangular plate and is fixedly connected with the edge of the other rectangular plate; the top of the water tank body is provided with a refrigerating fluid filling port and a water tank plug cover connected in a matched mode. The water supplementing pipeline and the ventilation pipeline are detachably connected, the water supplementing pipeline communicates to the bottom of the water tank body, and the ventilation pipeline communicates to the top of the water tank body; one end of the air leakage pipeline is communicated to the side edge of the refrigerating fluid filling port to form a through hole, and the other end of the air leakage pipeline is communicated with air; and the through hole is sealed by the bottom of the water tank plug cover. Compared with the prior art, the sealing structure has the advantages of being high in universality, good in structural strength and excellent in sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning equipment, in particular to an expansion water tank suitable for a vehicle air-conditioning. Background Art

[0002] With the continuous advancement of new energy technology, the cruising range and performance of new energy vehicles have been significantly improved. In recent years, the market demand for new energy buses has also continued to increase. However, compared with conventional small electric vehicles, new energy buses usually need to carry more passengers and goods and travel longer distances, so the battery load and usage frequency will be higher, which also puts higher requirements on the battery life and safe and stable operation. Domestic automotive air-conditioning manufacturers are vigorously developing and producing new energy air-conditioning with plate replacement systems or dedicated thermal management control systems to achieve precise control of battery operating temperature.

[0003] In common automotive air conditioning systems, plate exchange modules are usually used. Refrigerant is injected into the plate exchange module and used as a heat carrier to achieve heat exchange management for the battery. However, the refrigerant will be lost and produce gas during the heat exchange process. Therefore, an expansion tank is required to replenish the refrigerant in the plate exchange module and discharge the excess gas to maintain the air pressure in the system.

[0004] In actual production, expansion water tanks provided by multiple companies were used, and some common problems were found. On the one hand, the versatility of water tanks is very poor: for orders related to air-conditioning systems for buses, there are usually small batches, urgent delivery, and many specifications and varieties. Common water tanks are assembled by mold injection molding (plastic material) or stamping (metal material), and the molds are difficult to meet the requirements of multiple specifications and customization, and the versatility is poor; for example, the patent with announcement number CN108825351B provides a pressure-bearing expansion water tank, the expansion water tank body includes an expansion water tank upper body and an expansion water tank lower body, and the corresponding upper body and lower body are injection molded by a composite material of PP, glass fiber and modified glass fiber. On the other hand, the structural strength of the water tank is insufficient, and it is easy to burst and leak, which can easily cause safety accidents.

[0005] Therefore, there is an urgent need to provide an expansion water tank suitable for vehicle air conditioning to solve the above technical problems. Summary of the invention

[0006] In view of the problems in the related art, the utility model proposes an expansion water tank suitable for a vehicle air conditioner, which has the characteristics of high versatility, good structural strength and excellent sealing performance.

[0007] The utility model is achieved in this way:

[0008] An expansion water tank suitable for a vehicle air conditioner comprises a water tank body; the water tank body is formed by splicing a plurality of rectangular plates made of metal; wherein, for two adjacent and mutually perpendicular rectangular plates, the edge of one of the rectangular plates is vertically bent outward to form a bending portion, and the edge of the bending portion is aligned with the edge of the other rectangular plate and fixedly connected;

[0009] The top of the water tank body is provided with a refrigerant filling port formed by an annular protrusion, and a water tank plug cover is also adapted to be connected to the refrigerant filling port; it also includes a detachably connected water supply pipe and a ventilation pipe, and the water supply pipe and the ventilation pipe are both connected to the air conditioner plate and the water tank body; wherein the water supply pipe is connected to the bottom of the water tank body, and the ventilation pipe is connected to the top of the water tank body;

[0010] It also includes an air leakage pipe, one end of which is connected to the side of the refrigerant filling port to form a through hole, and the other end is connected to the air; the bottom of the water tank plug cover seals the through hole.

[0011] The rectangular plates made of metal are easy to cut, can easily meet customized needs, and have high structural strength. The bending parts are provided to connect with adjacent rectangular plates to increase the contact area. The connection is fixed by welding, industrial glue bonding or fasteners, and the connection has high fastening strength and sealing.

[0012] The water supply pipe is used to add coolant to the plate heat exchanger; the ventilation pipe is used to receive excess gas generated in the plate heat exchanger; when the air pressure in the water tank is too high, the water tank plug cover will be propped up until the through hole is connected to the outside air.

[0013] Furthermore, the refrigerant filling port extends 5 to 10 mm into the water tank body to form an extension portion; the extension portion can enhance the structural strength of the refrigerant filling port; the extension portion should not be too long to prevent affecting exhaust.

[0014] As a further optimization of the above solution, the inner side surface of the water tank body is provided with reinforcing ribs, and the reinforcing ribs are rectangular sheet structures and are perpendicular to the inner side surface.

[0015] Providing reinforcing ribs can further improve the supporting strength of the expansion water tank.

[0016] As a further optimization of the above solution, the inner side surface of the water tank body is provided with reinforcing ribs, which are formed by bending a metal sheet structure and include a connecting portion and a reinforcing portion that are perpendicular to each other; the connecting portion is fitted and fixed to the inner side surface.

[0017] Providing the connection part can increase the contact area between the reinforcing rib and the inner side of the expansion water tank, thereby improving the tightness of the connection, while the reinforcing part perpendicular to the connection part can increase the supporting strength of the surface where the rectangular plate is located, making it less likely to bend.

[0018] As a further optimization of the above solution, adjacent rectangular plates are connected by welding.

[0019] Welding can achieve sealing performance after the water tank body is spliced, and the connection strength is high.

[0020] As a further optimization of the above solution, the edge of the bent portion of one of the rectangular plates is connected to the edge of another of the rectangular plates by self-melting welding.

[0021] Autogenous welding is to melt the metal at high temperature, and after cooling, the molten metal will solidify again. The expansion tank connected by autogenous welding has high sealing performance and does not require welding rods, saving costs.

[0022] As a further optimization of the above solution, the surface where the bending portion of one rectangular plate is located is butt-welded to the surface where another rectangular plate is located, and the butt-welding points are evenly distributed on the bending portion.

[0023] Butt welding can further strengthen the connection stability between adjacent rectangular plates. When the self-melting weld cannot support a large pressure, the butt welding point can hold the water tank to prevent the weld from bursting.

[0024] As a further optimization of the above solution, there are multiple water supply pipes and ventilation pipes, wherein the end openings of the water supply pipes or ventilation pipes that are not connected to the plate exchanger are connected with rubber sleeves.

[0025] Multiple water supply pipes and ventilation pipes are set up to form common pipes and spare pipes; the spare pipes can also be connected to other plate exchangers.

[0026] As a further optimization of the above solution, a mounting opening is provided at the bottom of the water tank body, and a detachable water level sensor is provided at the mounting opening.

[0027] The water level sensor is used to monitor the amount of water in the refrigerant.

[0028] As a further optimization of the above solution, a transparent sight liquid tube is also included, which is vertically arranged on the outer side of the water tank body and is connected to the water tank body.

[0029] The transparent sight tube is used to observe the water level of the refrigerant.

[0030] As a further optimization of the above solution, a mounting assembly is connected to the peripheral side of the water tank body for fixing the expansion water tank.

[0031] The beneficial effects are as follows:

[0032] The utility model provides an expansion water tank suitable for a vehicle air conditioner, wherein the water tank body is formed by splicing metal rectangular plates cut according to required sizes. Compared with the prior art, the utility model is convenient for production and has better versatility and structural strength. The edges of the rectangular plates are vertically bent to form a bending portion, which can increase the contact area with the adjacent plates and facilitate improving the fixing strength of the connection. The metal rectangular plates are then welded together, which can simultaneously ensure the sealing and pressure resistance of the water tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the explosion structure of the expansion water tank provided in the embodiment of the utility model;

[0034] Figure 2 A schematic diagram of the connection of an expansion water tank provided in an embodiment of the utility model;

[0035] Figure 3 A schematic diagram of the connection of a transparent sight glass tube provided in an embodiment of the utility model;

[0036] Figure 4 A schematic diagram of connecting adjacent rectangular panels provided in an embodiment of the utility model.

[0037] Reference numerals:

[0038] 1. Water tank body;

[0039] 11. rectangular plate; 111. bending part; 112. welding point;

[0040] 12. reinforcing rib; 121. connecting portion; 122. reinforcing portion;

[0041] 2. Refrigerant filling port; 3. Water tank plug cover; 4. Water supply pipe;

[0042] 5. Ventilation pipe; 6. Rubber sleeve; 7. Air release pipe;

[0043] 8. Water level sensor; 9. Transparent sight tube; 10. Installation components. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] like Figures 1 to 4 As shown, this embodiment provides an expansion water tank suitable for a vehicle air conditioner, comprising a water tank body 1; the water tank body 1 is formed by splicing a plurality of rectangular plates 11 made of metal, and in this embodiment, SUS304 2B stainless steel with a thickness of 1.2 is used; wherein, for two adjacent and mutually perpendicular rectangular plates 11, the edge of one of the rectangular plates 11 is vertically bent outward to form a bending portion 111, and the edge of the bending portion 111 is aligned with the edge of the other rectangular plate 11 and fixedly connected;

[0046] In this embodiment, the adjacent rectangular plates 11 are connected by welding. The edge of the bent portion 111 of one rectangular plate 11 is connected by self-melting welding to seal the gap between them; meanwhile, the surface where the bent portion 111 of one rectangular plate 11 is located is connected by butt welding to the surface where the other rectangular plate 11 is located, and the butt welding points 112 are evenly distributed on the bent portion 111.

[0047] Autogenous welding is to melt the metal at high temperature, and after cooling, the molten metal will solidify again. The expansion water tank connected by autogenous welding has high sealing performance, and no welding rod is required, which saves costs. Butt welding can further strengthen the connection stability between adjacent rectangular plates 11. When the autogenous weld cannot support a large pressure, the butt welding point 112 can pull the water tank to prevent the weld from bursting. Welding can achieve the sealing performance of the water tank body 1 after splicing, and the connection strength is high.

[0048] In this embodiment, the inner side surface of the water tank body 1 is provided with a reinforcing rib 12, which is formed by bending a metal sheet structure and includes a connecting portion 121 and a reinforcing portion 122 which are perpendicular to each other; the connecting portion 121 is fitted and fixed to the inner side surface. In this embodiment, the metal sheet structure corresponding to the reinforcing rib 12 is made of SUS304 2B stainless steel with a thickness of 1.2;

[0049] The connection portion 121 can increase the contact area between the reinforcing rib 12 and the inner side surface of the expansion water tank and improve the tightness of the connection, while the reinforcing portion 122 perpendicular to the connection portion 121 can increase the support strength of the surface where the rectangular plate 11 is located, making it less likely to bend; the connection portion 121 and the inner side surface, that is, the rectangular plate 11 are connected by welding.

[0050] The top of the water tank body 1 is provided with a refrigerant filling port 2 formed by an annular protrusion, and the refrigerant filling port 2 is also adapted to be connected with a water tank plug cover 3; in this embodiment, the refrigerant filling port 2 extends about 9 mm into the inside of the water tank body 1;

[0051] It also includes a detachably connected water supply pipe 4 and a ventilation pipe 5, both of which are connected to the plate changer of the air conditioner and the water tank body 1; wherein the water supply pipe 4 is connected to the bottom of the water tank body 1, and the ventilation pipe 5 is connected to the top of the water tank body 1; in this embodiment, there are multiple water supply pipes 4 and ventilation pipes 5, wherein the end openings of the water supply pipe 4 or the ventilation pipe 5 that are not connected to the plate changer are connected and provided with a rubber sleeve 6.

[0052] A plurality of water supply pipes 4 and ventilation pipes 5 are provided to form common pipes and spare pipes; the spare pipes can also be connected to other plate exchangers.

[0053] It also includes an air leakage pipe 7, one end of which is connected to the side of the refrigerant filling port 2 to form a through hole, and the other end is connected to the air; the bottom of the water tank plug cover 3 seals the through hole.

[0054] The water supply pipe 4 is used to add coolant to the plate heat exchanger; the ventilation pipe 5 is used to receive the excess gas generated in the plate heat exchanger; when the air pressure in the water tank is too high, the water tank plug cover 3 will be propped up until the through hole is connected to the outside air.

[0055] In this embodiment, a mounting opening is provided at the bottom of the water tank body 1, and a detachable water level sensor 8 is provided at the mounting opening. The mounting opening is a stainless steel stud M14*1.5, and sensors of different specifications can be flexibly used, which is convenient for disassembly and assembly.

[0056] The water level sensor 8 is used to monitor the water volume of the refrigerant.

[0057] In this embodiment, a transparent sight tube 9 is further included. The transparent sight tube 9 is vertically arranged on the outer side of the water tank body 1 and is communicated with the water tank body 1 .

[0058] The transparent sight glass 9 is used to observe the water level of the freezing liquid.

[0059] In this embodiment, a mounting assembly 10 is connected to the peripheral side of the water tank body 1, and a hole is opened on the mounting assembly 10 for fixing the expansion water tank.

[0060] The rectangular plate 11 made of metal is easy to cut, can easily meet customized needs, and has high structural strength; the bending portion 111 is provided to connect with the adjacent rectangular plate 11, which can increase the contact area, and the connection is fixed by welding, industrial glue bonding or setting fasteners, and the fastening strength and sealing of the connection are high.

[0061] According to the disclosure and teaching of the above specification, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. An expansion water tank suitable for a vehicle air conditioner, comprising a water tank body; characterized in that: The water tank body is formed by splicing a plurality of rectangular plates made of metal; wherein, for two adjacent and mutually perpendicular rectangular plates, the edge of one of the rectangular plates is vertically bent outward to form a bending portion, and the edge of the bending portion is aligned with the edge of the other rectangular plate and fixedly connected; The top of the water tank body is provided with a refrigerant filling port formed by an annular protrusion, and a water tank plug cover is also adapted to be connected to the refrigerant filling port; it also includes a detachably connected water supply pipe and a ventilation pipe, and the water supply pipe and the ventilation pipe are both connected to the air conditioner plate and the water tank body; wherein the water supply pipe is connected to the bottom of the water tank body, and the ventilation pipe is connected to the top of the water tank body; It also includes an air leakage pipe, one end of which is connected to the side of the refrigerant filling port to form a through hole, and the other end is connected to the air; the bottom of the water tank plug cover seals the through hole.

2. The expansion water tank suitable for a vehicle air conditioner according to claim 1, characterized in that: The inner side surface of the water tank body is provided with reinforcing ribs, which are rectangular sheet structures and are perpendicular to the inner side surface.

3. The expansion water tank suitable for a vehicle air conditioner according to claim 1, characterized in that: The inner side surface of the water tank body is provided with reinforcing ribs, which are formed by bending a metal sheet structure and include a connecting portion and a reinforcing portion that are perpendicular to each other; the connecting portion is fitted and fixed to the inner side surface.

4. The expansion water tank suitable for a vehicle air conditioner according to claim 1, characterized in that: Adjacent rectangular plates are connected by welding.

5. The expansion water tank suitable for vehicle air conditioning according to claim 4, characterized in that: The edge of the bent portion of one rectangular plate is connected to the edge of another rectangular plate by self-melting welding.

6. The expansion water tank suitable for a vehicle air conditioner according to claim 5, characterized in that: The surface where the bending portion of one rectangular plate is located is butt-welded to the surface where another rectangular plate is located, and the butt-welding points are evenly distributed on the bending portion.

7. The expansion water tank suitable for a vehicle air conditioner according to claim 1, characterized in that: There are multiple water supply pipes and ventilation pipes, wherein the end openings of the water supply pipes or ventilation pipes that are not connected to the plate exchanger are connected with rubber sleeves.

8. The expansion water tank suitable for a vehicle air conditioner according to claim 1, characterized in that: The bottom of the water tank body is provided with an installation opening, and a detachable water level sensor is arranged at the installation opening.

9. The expansion water tank suitable for a vehicle air conditioner according to claim 1, characterized in that: It also includes a transparent sight liquid tube, which is vertically arranged on the outer side of the water tank body and is communicated with the water tank body.

10. The expansion water tank suitable for a vehicle air conditioner according to claim 1, characterized in that: The peripheral side of the water tank body is connected with a mounting assembly.

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