A vehicle evaporator with cold storage

Abstract

The application relates to the technical field of vehicle evaporators, in particular to a vehicle cold accumulation type evaporator which comprises an L-shaped shell plate, side plates are fixedly connected to the top of both ends of the L-shaped shell plate, a plurality of harmonica tubes are fixedly connected to the top surface of the L-shaped shell plate at equal intervals, the harmonica tube comprises a plurality of heat exchange pipe pieces which are fixedly connected to each other, a D-shaped groove hole is arranged in the heat exchange pipe piece, a plugging assembly is fixedly arranged between two adjacent harmonica tubes, the plugging assembly comprises a supporting cylinder, and two plugging cylinders are rotatably connected in the supporting cylinder. In the application, the plugging assembly is arranged between the traditional harmonica tubes, the plugging assembly can control whether the top and the bottom of the adjacent harmonica tubes are communicated, when the refrigerant flows and evaporates among the harmonica tubes at the same time, the high-efficiency refrigeration effect of the refrigerant can be achieved, and when the refrigerant only flows and evaporates among the harmonica tubes at a local position, the refrigeration degree of the refrigerant is indirectly reduced due to incomplete vaporization of the refrigerant.

Description

Technical Field

[0001] This invention relates to the field of automotive evaporator technology, specifically a vehicle-mounted cold storage evaporator. Background Technology

[0002] A vehicle-mounted cold storage evaporator is a component that combines an air conditioning evaporator and a cold storage unit. The air conditioning refrigerant enters the evaporator's harmonica tube (also called the evaporator pipe) through the expansion valve, where it evaporates and absorbs heat, lowering the ambient temperature around the evaporator. The cold storage phase change material inside the cold storage unit receives the cold energy and changes from a liquid state to a solid state to store the cold energy. When the vehicle needs cooling, the cooling equipment stops working, but the blower continues to run. The phase change material in the cold storage unit changes from a solid state back to a liquid state, releasing the stored cold energy, thereby achieving the cooling effect.

[0003] The multiple harmonica tubes on the evaporator are usually connected and arranged into a long, winding pipe. The long, winding pipe allows the refrigerant enough time and space to vaporize, improving refrigeration efficiency. However, after the evaporator's efficient refrigeration saturates the cold storage tank, the evaporator itself is not easy to regulate and reduce the heat exchange of the refrigerant, which can easily cause the evaporator to overcool and frost to form on its surface. In addition, most evaporators do not have a structure to dry the refrigerant, so the refrigerant can only be dried by the liquid receiver dryer in the refrigeration system. Summary of the Invention

[0004] The purpose of this invention is to provide a vehicle-mounted cold storage evaporator to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A vehicle-mounted cold storage evaporator includes:

[0007] L-shaped shell plate, with side plates fixed at both ends;

[0008] Multiple harmonica tubes are fixedly connected to an L-shaped shell plate. Each harmonica tube includes multiple connected and fixed heat exchange tubes. The heat exchange tubes have C-shaped slots inside for refrigerant to flow and evaporate.

[0009] Multiple sealing components are fixed between two harmonica tubes at corresponding positions. Each sealing component includes a support cylinder, and two sealing cylinders are rotatably connected inside the support cylinder. A non-woven filter element is installed and fixed inside one of the sealing cylinders. A connecting shaft capable of driving the two sealing cylinders to rotate is rotatably connected to the bottom of the support cylinder.

[0010] A drive assembly, arranged on the top of an L-shaped shell plate, is used to drive multiple connecting shafts to rotate sequentially. The drive assembly includes a transmission column that meshes with the connecting shafts, and a lead screw that is screwed inside the transmission column to drive the transmission column to slide linearly on the L-shaped shell plate.

[0011] Furthermore, the support cylinder has a through hole 1 at both the top and bottom, and the sealing cylinder has a through hole 2 on its outer side, with the two holes having the same size as the first hole.

[0012] Furthermore, a connecting pipe is fixed between the two sealing cylinders, and both ends of the sealing cylinder at the lower part of the support cylinder are sealed.

[0013] Furthermore, the connecting shaft is fixedly connected to the corresponding sealing cylinder, and a gear is fixed to the bottom of the connecting shaft.

[0014] Furthermore, the drive assembly also includes a motor capable of driving the lead screw to rotate, and multiple racks are fixed on the outer side of the transmission column, the racks meshing with gears at corresponding positions for transmission.

[0015] Furthermore, a sealing block is installed at the opening of the sealing cylinder at the upper part of the inside of the support cylinder, and the sealing block is detachably and sealed to the sealing cylinder.

[0016] Furthermore, a non-woven filter element is placed inside the sealing cylinder located at the upper part of the support cylinder.

[0017] Furthermore, two interface pipes are fixed at the top and bottom of the heat exchange tube plate, and the interface pipes are connected to the C-shaped slot holes, with adjacent interface pipes connected and fixed.

[0018] Furthermore, an inlet pipe and an outlet pipe are fixed to the outer sides of the two side plates respectively, and the inlet pipe and the outlet pipe are respectively connected to the interface pipe on the harmonica tube at the corresponding position.

[0019] Furthermore, the support cylinder is fixed between the interface tubes on the two harmonica tubes at corresponding positions, and a sealing cap is detachably fixed to the top of the support cylinder.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. By arranging multiple sealing components between multiple harmonica tubes (refer to...) Figure 3 and Figure 4 From right to left, the multiple sealing components are referred to as sealing component one, sealing component two, and sealing component three. In the initial state, sealing component one and sealing component two are in the state where the top round hole is closed and the bottom round hole is open, while sealing component two is in the state where the top round hole is open and the bottom round hole is closed. This allows the refrigerant entering from the liquid inlet to pass through the inclined grooves inside the multiple harmonica tubes from right to left, enabling the refrigerant to flow, evaporate, and absorb heat inside the long and winding pipe. This results in more complete vaporization of the refrigerant and achieves a highly efficient cooling effect.

[0022] By positioning both sealing component one and sealing component three in the state where the top circular hole one is open and the bottom circular hole one is closed, and sealing component two in the state where the top circular hole one is closed and the bottom circular hole one is open, the refrigerant entering from the liquid inlet end can only flow inside the incline grooves of the two middle harmonica tubes. This shortens the refrigerant flow and evaporation path, helps to reduce the degree of refrigerant evaporation and cooling, and enables the refrigerant heat exchange degree to be reduced after the cold storage accumulator is saturated, effectively preventing the evaporator from being over-cooled and causing frost to form on the evaporator surface.

[0023] 2. A drive column is slidably connected to the L-shaped shell plate. Three racks are fixed on one side of the drive column. As the drive column moves to the left along the guide rail, the rack on the right side of the drive column will rotate the two sealing cylinders on the first sealing component by 90 degrees, so that the first sealing component is in the state of top hole one open and bottom hole one closed. At this time, the refrigerant entering the liquid inlet will flow and evaporate between the two harmonica tubes on the left. The drive column continues to move to the left, and the rack in the middle position of the drive column will rotate the two sealing cylinders on the second sealing component by 90 degrees, so that the second sealing component is in the state of top hole one closed and bottom hole one open. In this state, the refrigerant entering the liquid inlet will flow and evaporate between the two harmonica tubes at the far left and middle positions. The drive column continues to move to the left, and the rack on the left side of the drive column will rotate the two sealing cylinders on the sealing component three by 90 degrees, so that the sealing component three is in the state of opening the top round hole and closing the bottom round hole. At this time, the refrigerant entering the liquid inlet will flow and evaporate between the two harmonica tubes at the middle position. This achieves the goal of reducing the degree of refrigerant heat exchange while allowing different positions of the evaporator to be cooled individually, reducing the degree of cooling at different positions, and effectively preventing large local temperature differences in the evaporator.

[0024] 3. By installing a mesh cylinder inside the sealing cylinder, which contains molecular sieves, after the refrigerant enters the sealing cylinder through the second round hole, it will come into contact with the molecular sieve through the mesh cylinder. The molecular sieve can adsorb the moisture in the refrigerant, enabling the evaporator itself to dry the refrigerant, thus overcoming the shortcomings of traditional refrigerant drying which is limited to liquid receiver dryers. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the invention and the cold storage device;

[0026] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the harmonica tube, drive assembly, and sealing assembly in this invention;

[0028] Figure 4 This is a schematic diagram of the L-shaped shell plate, sealing assembly, and driving assembly in this invention;

[0029] Figure 5 This is a schematic diagram of the heat exchanger tube structure in this invention;

[0030] Figure 6 This is a schematic diagram of the three-dimensional structure of the heat exchanger tube segments in this invention.

[0031] Figure 7 This is a schematic diagram of the internal structure of the sealing component in this invention;

[0032] Figure 8 This is a schematic diagram of the sealing cylinder and non-woven filter element structure in this invention.

[0033] In the diagram: 100, L-shaped shell plate; 110, side plate; 111, inlet pipe; 112, outlet pipe; 120, guide rail; 200, harmonica tube; 210, heat exchange tube plate; 211, C-shaped groove; 212, interface pipe; 300, sealing assembly; 310, support cylinder; 311, round hole one; 312, sealing cover; 320, sealing cylinder; 321, round hole two; 322, connecting pipe; 323, mesh cylinder; 324, sealing block; 325, non-woven filter element; 330, connecting shaft; 331, gear; 400, drive assembly; 410, transmission column; 411, rack; 420, lead screw; 430, motor; 500, cold accumulator. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1, please refer to Figure 1 - Figure 8In this embodiment of the invention, a vehicle-mounted cold storage evaporator includes an L-shaped shell plate 100. Side plates 110 are fixedly connected to the top of both ends of the L-shaped shell plate 100. Multiple harmonica tubes 200 are fixedly connected at equal intervals to the top surface of the L-shaped shell plate 100. Each harmonica tube 200 includes multiple interconnected and fixed heat exchange tubes 210. The heat exchange tubes 210 have U-shaped slots 211 inside. A sealing assembly 300 is installed and fixed between adjacent harmonica tubes 200. The sealing assembly 300 includes a support cylinder 310, and two... Each sealing cylinder 320 has a mesh cylinder 323 fixedly installed inside, and the mesh cylinder 323 contains a molecular sieve that can absorb moisture. The bottom of the support cylinder 310 is rotatably connected to a connecting shaft 330 that can drive the two sealing cylinders 320 to rotate. The top of the L-shaped shell plate 100 is provided with a drive assembly 400, which includes a drive column 410 that meshes with the connecting shaft 330. The drive column 410 is internally screwed with a lead screw 420 that can drive the drive column 410 to slide linearly on the L-shaped shell plate 100.

[0036] Specifically, by arranging a sealing component 300 between multiple harmonica tubes 200, the sealing component 300 can control whether the top and bottom of adjacent harmonica tubes 200 are connected. This allows the sealing component 300 to control the flow and evaporation path of the refrigerant between the multiple harmonica tubes 200. When the refrigerant flows and evaporates simultaneously between multiple harmonica tubes 200, it can achieve a highly efficient cooling effect. When the refrigerant only flows and evaporates between harmonica tubes 200 in a localized area, the shortened flow and evaporation path will cause incomplete vaporization of the refrigerant, thereby indirectly reducing the cooling capacity of the refrigerant. This allows for the regulation of the heat exchange cooling capacity of the evaporator. By installing a molecular sieve inside the sealing component 300, the molecular sieve can adsorb moisture during the refrigerant's passage, facilitating the drying of the refrigerant during the operation of the evaporator.

[0037] like Figure 4 and Figure 7 As shown, in this embodiment, the top and bottom of the support cylinder 310 are both provided with a circular hole 311, and the outer side of the sealing cylinder 320 is provided with a circular hole 321. The circular hole 321 and the circular hole 311 are the same size. When the circular hole 321 on the sealing cylinder 320 is connected to the circular hole 311 on the support cylinder 310, the refrigerant will flow between the support cylinder 310 and the sealing cylinder 320, and the two heat exchange tubes 210 arranged on both sides of the support cylinder 310 are in a connected state.

[0038] In this embodiment, the two round holes 321 on the two sealing cylinders 320 inside the same support cylinder 310 are vertically distributed, so that the top and bottom of the sealing assembly 300 always have a set of round holes 311 and round holes 321 in communication, so that the refrigerant can always pass through the sealing assembly 300.

[0039] like Figure 7 As shown, in this embodiment, a connecting pipe 322 is fixed between the two sealing cylinders 320. The sealing cylinder 320 at the lower position inside the support cylinder 310 is closed at both ends, so that when the connecting shaft 330 rotates with the bottom sealing cylinder 320, the bottom sealing cylinder 320 rotates with the top sealing cylinder 320 through the connecting pipe 322 at the same angle. This ensures that when the two sealing cylinders 320 cooperate with the support cylinder 310, one sealing cylinder 320 is always in the state of opening the support cylinder 310, and the other sealing cylinder 320 is in the state of closing the support cylinder 310.

[0040] like Figure 4 and Figure 7 As shown, in this embodiment, the connecting shaft 330 is fixedly connected to the corresponding sealing cylinder 320, and a gear 331 is fixedly fixed at the bottom of the connecting shaft 330. The drive assembly 400 also includes a motor 430 that can drive the lead screw 420 to rotate. The motor 430 is fixedly connected to the L-shaped shell plate 100. Multiple racks 411 are fixedly fixed on the outside of the transmission column 410, and the racks 411 mesh with the corresponding gears 331 for transmission.

[0041] In this embodiment, the length of the rack 411 is sufficient to drive the gear 331 to rotate at a 45-degree angle, so that the transmission column 410 carries the rack 411 through the gear 331. The gear 331 can then drive the two sealing cylinders 320 to rotate at a 90-degree angle through the connecting shaft 330, thereby adjusting the opening of the sealing cylinder 320 and the different positions on the sealing support cylinder 310. The bottom end of the connecting shaft 330 is rotatably connected to the L-shaped shell plate 100.

[0042] In this embodiment, when multiple sealing components 300 need to be operated by the drive component 400, the output end of the motor 430 drives the lead screw 420 to rotate. The transmission column 410, which is screwed to the lead screw 420, slides to the left along the guide rail 120, so that the racks 411 at different positions on the transmission column 410 can successively rotate the gears 331 at different positions. The gears 331 drive the sealing cylinder 320 to rotate through the connecting shaft 330, so as to achieve the effect of sealing or opening the circular hole 311 on the support cylinder 310 by the sealing cylinder 320. The output end of the motor 430 can also drive the lead screw 420 to rotate in the opposite direction, so that the transmission column 410 returns to the initial position. The initial position is referenced to... Figure 4 At this time, multiple sealing components 300 can meet the requirement that the refrigerant flows and evaporates between all the harmonica tubes 200.

[0043] like Figure 8 As shown, in this embodiment, a sealing block 324 is installed at the opening of the sealing cylinder 320 located at the upper part of the support cylinder 310. The sealing block 324 is detachably and sealingly fixed to the sealing cylinder 320. Figure 4The sealing block 324 can put the mesh cylinder 323 into the sealing cylinder 320. The molecular sieve inside the mesh cylinder 323 can adsorb the moisture in the refrigerant, which helps the refrigerant to stay dry. The sealing block 324 and the sealing cylinder 320 can be installed in the opening of the sealing cylinder 320 by screwing them together.

[0044] like Figure 3 , Figure 5 and Figure 6 As shown, in this embodiment, two interface pipes 212 are fixed at the top and bottom of the heat exchange tube 210. The interface pipes 212 are connected to the incised groove 211. Two adjacent interface pipes 212 are connected and fixed. A harmonica tube 200 includes multiple heat exchange tubes 210 fixed in parallel. The top and bottom of the multiple heat exchange tubes 210 are connected through the incised groove 211, so that the refrigerant flowing into the harmonica tube 200 can be divided into multiple dispersed flow evaporation, which is beneficial to improving the refrigerant vaporization effect.

[0045] like Figure 1 - Figure 3 As shown, in this embodiment, an inlet pipe 111 and an outlet pipe 112 are respectively fixed to the outer sides of the two side plates 110. The inlet pipe 111 and the outlet pipe 112 are respectively connected to the interface pipe 212 on the corresponding harmonica pipe 200, so that the refrigerant is delivered into the inlet pipe 111 through the external expansion valve, and then from... Figure 3 The liquid inlet flows into the interface pipe 212 and the heat exchange tube 210, and the refrigerant after heat exchange flows from the liquid outlet to the liquid outlet pipe 112.

[0046] like Figure 3 and Figure 5 As shown, in this embodiment, the support cylinder 310 is fixed between the interface pipes 212 on the two harmonica tubes 200 at the corresponding positions. When the circular hole 311 on the support cylinder 310 is in the open state, the support cylinder 310 and the interface pipe 212 are in a connected state, which facilitates the refrigerant to flow between the two adjacent harmonica tubes 200 through the support cylinder 310.

[0047] like Figure 7 As shown, in this embodiment, a sealing cover 312 is detachably fixed to the top of the support cylinder 310. The sealing cover 312 is screwed into the support cylinder 310. During the replacement of the mesh cylinder 323, an external drill bit can be inserted into the hexagonal groove on the surface of the sealing cover 312 to make the drill bit rotate to open or close the sealing cover 312.

[0048] Example 2, based on Example 1, aims to filter impurities in the refrigerant and effectively prevent impurities from causing system blockage, component wear, and other problems.

[0049] like Figure 8As shown, in this embodiment, a non-woven fabric filter element 325 can be placed inside the sealing cylinder 320 located above the support cylinder 310. Non-woven fabric is a material made of fibers bonded by mechanical or chemical methods. It has good air permeability and filtration performance, and can effectively remove tiny impurities in the refrigerant, such as dust and fibers. At the same time, the non-woven fabric filter element 325 has good flexibility and plasticity, making it easy to process into the cylindrical structure shown in the figure.

[0050] In this embodiment, the sealing assembly 300 of this application mainly has three sealing cylinders 320, inside which non-woven fabric filter elements 325 or molecular sieves can be placed. Therefore, as needed, non-woven fabric filter elements 325 can be placed inside an appropriate number of sealing cylinders 320, and molecular sieves can be placed inside an appropriate number of sealing cylinders 320. This not only dries the refrigerant but also purifies the refrigerant.

[0051] In this invention, reference is made to Figure 1 The cold storage unit 500 can be installed between multiple harmonica tubes 200, which facilitates the transfer of cold energy to the cold storage unit 500. The cold storage unit 500 is an existing technology component, and its specific working principle and installation principle will not be described in detail here.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vehicle-mounted cold storage evaporator, characterized in that, include: L-shaped shell plate (100), with side plates (110) fixed at both ends of the L-shaped shell plate (100). Multiple harmonica tubes (200) are fixedly connected to an L-shaped shell plate (100). Each harmonica tube (200) includes multiple connected and fixed heat exchange tubes (210). The heat exchange tubes (210) have C-shaped slots (211) inside for refrigerant to flow and evaporate. Multiple sealing components (300) are fixed between two harmonica tubes (200) at corresponding positions. The sealing component (300) includes a support cylinder (310). Two sealing cylinders (320) are rotatably connected inside the support cylinder (310). The top and bottom of the support cylinder (310) are provided with a circular hole 1 (311). The outer side of the sealing cylinder (320) is provided with a circular hole 2 (321). The circular hole 2 (321) is the same size as the circular hole 1 (311). The circular holes 2 (321) on the two sealing cylinders (320) inside the same support cylinder (310) are vertically distributed. A mesh cylinder (323) is installed and fixed inside one sealing cylinder (320). The mesh cylinder (323) contains molecular sieves. The bottom of the support cylinder (310) is rotatably connected to a connecting shaft (330) that can drive the two sealing cylinders (320) to rotate. A drive assembly (400) is arranged on the top of an L-shaped shell plate (100) for driving multiple connecting shafts (330) to rotate sequentially. The drive assembly (400) includes a drive column (410) that meshes with the connecting shafts (330). Inside the drive column (410) is a lead screw (420) that can drive the drive column (410) to slide linearly on the L-shaped shell plate (100).

2. The automotive regenerative evaporator according to claim 1, characterized in that, A connecting pipe (322) is fixed between the two sealing cylinders (320), and both ends of the sealing cylinder (320) at the lower position inside the support cylinder (310) are closed.

3. The automotive regenerative evaporator according to claim 1, characterized in that, The connecting shaft (330) is fixedly connected to the corresponding sealing cylinder (320), and a gear (331) is fixed at the bottom of the connecting shaft (330).

4. The automotive regenerative evaporator according to claim 3, characterized in that, The drive assembly (400) also includes a motor (430) capable of driving the lead screw (420) to rotate, and multiple racks (411) are fixed on the outside of the transmission column (410), which mesh with the corresponding gears (331) for transmission.

5. The automotive regenerative evaporator according to claim 1, characterized in that, A sealing block (324) is installed at the opening of the sealing cylinder (320) at the upper part of the support cylinder (310). The sealing block (324) and the sealing cylinder (320) are detachably sealed and fixed.

6. The automotive regenerative evaporator according to claim 1 or 5, characterized in that, A non-woven filter element (325) is placed inside the sealing cylinder (320) located at the upper part of the support cylinder (310).

7. The automotive regenerative evaporator according to claim 1, characterized in that, Two interface pipes (212) are fixed at the top and bottom of the heat exchange tube plate (210). The interface pipes (212) are connected to the C-shaped slot (211), and two adjacent interface pipes (212) are connected and fixed.

8. The automotive regenerative evaporator according to claim 7, characterized in that, Two side plates (110) are respectively fixed with an inlet pipe (111) and an outlet pipe (112). The inlet pipe (111) and the outlet pipe (112) are respectively connected to the interface pipe (212) on the harmonica tube (200) at the corresponding position.

9. The automotive regenerative evaporator according to claim 8, characterized in that, The support tube (310) is fixed between the interface tubes (212) on the two harmonica tubes (200) at the corresponding positions, and the top of the support tube (310) is detachably fixed with a sealing cap (312).

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