Cold storage type evaporator for vehicle

Abstract

The invention relates to the technical field of automotive evaporators, in particular to an automotive cold storage type evaporator which comprises an L-shaped shell plate, side plates are fixedly connected to the tops of the two ends of the L-shaped shell plate, a plurality of harmonica-shaped pipes are fixedly connected to the top face of the L-shaped shell plate at equal intervals, and each harmonica-shaped pipe comprises a plurality of heat exchange pipe pieces which are fixedly communicated with one another. Each heat exchange pipe piece is internally provided with a U-shaped groove hole, a plugging assembly is fixedly installed between every two adjacent harmonica-shaped pipes, each plugging assembly comprises a supporting cylinder, and two plugging cylinders are rotationally connected to the interior of each supporting cylinder. According to the invention, the plugging assemblies are arranged among a plurality of traditional harmonica-shaped tubes, the plugging assemblies can control whether the tops and the bottoms of the adjacent harmonica-shaped tubes are communicated or not, when a refrigerant flows and evaporates among the harmonica-shaped tubes at the same time, the effect of efficient refrigeration of the refrigerant can be achieved, and when the refrigerant flows and evaporates only among the harmonica-shaped tubes at local positions, the effect of efficient refrigeration of the refrigerant can be achieved. And the refrigeration degree of the refrigerant is indirectly reduced due to incomplete vaporization of the refrigerant.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle evaporators, in particular to a vehicle cold storage evaporator. Background Art

[0002] A vehicle cold storage evaporator is a component that combines an air conditioner evaporator and a cold storage unit. The air conditioner refrigerant passes through the expansion valve and enters the evaporator's harmonica tube (also called the evaporation tube), where it evaporates and absorbs heat, lowering the ambient temperature around the evaporator. The cold storage phase change material inside the cold storage unit absorbs the cold energy, transforming from liquid to solid to store the cold energy. When the vehicle needs to be cooled, the refrigeration equipment stops working, while the blower continues to run. The phase change material in the cold storage unit changes from solid to liquid, releasing the stored cold energy, thereby achieving a cooling effect. The multiple harmonica tubes on the evaporator are generally connected to form a long tortuous pipeline. The long tortuous pipeline allows the refrigerant enough time and space to vaporize, thereby improving the refrigeration efficiency. However, after the evaporator's efficient refrigeration makes the cold storage device saturated with cold, the evaporator itself is difficult to control to reduce the degree of heat exchange of the refrigerant, which can easily cause the evaporator to overcool and frost on the surface. In addition, most evaporators themselves do not have a structure for drying the refrigerant, resulting in the refrigerant having to rely on the liquid storage dryer in the refrigeration system to dry it. Summary of the Invention

[0003] The object of the present invention is to provide a cold storage evaporator for a vehicle to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A cold storage evaporator for a vehicle, comprising: An L-shaped shell plate, with side plates fixed to both ends of the L-shaped shell plate; A plurality of harmonica tubes are fixedly connected to the L-shaped shell plate, wherein the harmonica tubes include a plurality of connected and fixed heat exchange tube sheets, and the heat exchange tube sheets are provided with U-shaped slots for the refrigerant to flow and evaporate; Multiple blocking components are respectively fixed between two harmonica tubes at corresponding positions. The blocking components include a support tube, two blocking tubes are rotatably connected inside the support tube, a non-woven filter element is fixed inside one of the blocking tubes, and the bottom of the support tube is rotatably connected to a connecting shaft that can drive the two blocking tubes to rotate; The drive assembly is arranged on the top of the L-shaped shell plate and is used to drive multiple connecting shafts to rotate in sequence. The drive assembly includes a transmission column that engages with the connecting shaft for transmission. A screw rod is screwed inside the transmission column and can drive the transmission column to slide linearly on the L-shaped shell plate.

[0005] Furthermore, round holes one are formed through the top and bottom of the support cylinder, and round holes two are formed through the outside of the plugging cylinder. The round holes two are the same size as the round holes one.

[0006] Furthermore, a connecting pipe is fixed between the two plugging cylinders, and both ends of the plugging cylinder at the lower position inside the support cylinder are closed.

[0007] Furthermore, the connecting shaft is fixedly connected to the corresponding plugging cylinder, and a gear is fixed to the bottom of the connecting shaft.

[0008] Furthermore, the driving component further includes a motor capable of driving the rotation of the screw rod. A plurality of racks are fixed to the outside of the transmission column, and the racks are meshed and transmitted with the corresponding gears.

[0009] Furthermore, a sealing block is installed at the open end of the plugging cylinder at the upper position inside the support cylinder, and the sealing block is detachably and sealingly fixed to the plugging cylinder.

[0010] Furthermore, a non-woven filter element is placed inside the plugging cylinder at the upper position inside the support cylinder.

[0011] Furthermore, two interface pipes are fixed to the top and bottom of the heat exchange tube sheet. The interface pipes are communicated with the U-shaped slot holes, and adjacent two interface pipes are communicated and fixed.

[0012] Furthermore, a liquid inlet pipe and a liquid outlet pipe are respectively fixed to the outside of the two side plates. The liquid inlet pipe and the liquid outlet pipe are respectively communicated with the interface pipes on the corresponding mouth organ pipes.

[0013] Furthermore, the support cylinder is fixed between the interface pipes on the two corresponding mouth organ pipes, and a sealing cover is detachably fixed to the top of the support cylinder.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By arranging a plurality of plugging components (refer to Figure 3 and Figure 4 between multiple mouth organ pipes, the multiple plugging components are sequentially recorded as plugging member one, plugging member two, and plugging member three from right to left). In the initial state, both plugging member one and plugging member two are in the state where the round hole one at the top is closed and the round hole one at the bottom is open, and plugging member two is in the state where the round hole one at the top is open and the round hole one at the bottom is closed. Thus, the refrigerant entering from the liquid inlet end can sequentially pass through the U-shaped slot holes inside the multiple mouth organ pipes from right to left, realizing the evaporation and heat absorption of the refrigerant flowing inside the long and winding pipeline, so that the refrigerant vaporizes more completely, achieving the effect of efficient refrigeration; By placing both the first and third blocking members in a state where the top circular hole is open and the bottom circular hole is closed, and placing the second blocking member in a state where the top circular hole is closed and the bottom circular hole is open, the refrigerant entering from the liquid inlet can only flow inside the U-shaped slots of the two middle harmonica tubes, shortening the path for the refrigerant to flow and evaporate, helping to reduce the degree of evaporative cooling of the refrigerant. This allows the degree of heat exchange of the refrigerant to be reduced after the cold storage device is saturated with cold, effectively preventing the evaporator from being overcooled and causing frost on the evaporator surface. 2. A transmission column is connected by sliding on the L-shaped shell plate. Three racks are fixed on one side of the transmission column. As the transmission column moves to the left along the guide rail, the right rack on the transmission column will rotate 90 degrees with the two sealing cylinders on the sealing piece 1, so that the sealing piece 1 is in a state of top hole - open and bottom hole - closed. At this time, the refrigerant entering the liquid inlet end will flow and evaporate between the two harmonica tubes on the left. The transmission column continues to move to the left, and the rack in the middle position on the transmission column rotates 90 degrees with the two sealing cylinders on the sealing piece 2, so that the sealing piece 2 is in a state of top hole - closed and bottom hole - open. State, at this time, the refrigerant entering the liquid inlet end will flow and evaporate between the two harmonica tubes at the leftmost and middle positions. The transmission column continues to move to the left, and the rack on the left side of the transmission column will drive the two sealing cylinders on the sealing piece three to rotate 90 degrees, so that the sealing piece three is in a state where the top circular hole is open and the bottom circular hole is closed. At this time, the refrigerant entering the liquid inlet end will flow and evaporate between the two harmonica tubes at the middle position, thereby achieving the goal of cooling different positions of the evaporator separately while reducing the degree of heat exchange of the refrigerant, weakening the cooling degree at different positions, and effectively preventing large local temperature differences in the evaporator.

[0015] 3. A mesh tube is installed inside the sealing tube, and a molecular sieve is contained inside the mesh tube. After the refrigerant enters the sealing tube through the second circular hole, it will come into contact with the molecular sieve through the mesh tube. The molecular sieve can absorb the moisture in the refrigerant, so that the evaporator itself has the function of drying the refrigerant, breaking the defect that traditional refrigerant drying is limited to the liquid storage dryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention and the cold storage device; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic structural diagram of the harmonica tube, drive assembly, and blocking assembly of the present invention; Figure 4 This is a schematic diagram of the structure of the L-shaped shell plate, the blocking assembly, and the driving assembly in the present invention; Figure 5 This is a schematic diagram of the heat exchange tube structure in the present invention; Figure 6 This is a schematic diagram of the heat exchange tube sheet in the present invention in a split three-dimensional state; Figure 7 It is a schematic diagram of the internal structure of the plugging component in the present invention; Figure 8 It is a schematic diagram of the plugging cylinder and non-woven fabric filter element structures in the present invention.

[0017] In the figure: 100, L-shaped shell plate; 110, side plate; 111, liquid inlet pipe; 112, liquid outlet pipe; 120, guide rail; 200, mouth organ tube; 210, heat exchange tube sheet; 211, U-shaped slot hole; 212, interface pipe; 300, plugging component; 310, support cylinder; 311, circular hole one; 312, sealing cover; 320, plugging cylinder; 321, circular hole two; 322, connecting pipe; 323, mesh cylinder; 324, sealing block; 325, non-woven fabric filter element; 330, connecting shaft; 331, gear; 400, driving component; 410, transmission column; 411, rack; 420, screw rod; 430, motor; 500, cold storage. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiment 1, please refer to Figure 1 - Figure 8 , in the embodiment of the present invention, a vehicle-mounted cold storage evaporator includes an L-shaped shell plate 100. The tops of both ends of the L-shaped shell plate 100 are fixedly connected with side plates 110. The top surface of the L-shaped shell plate 100 is fixedly connected with a plurality of mouth organ tubes 200 at equal intervals. The mouth organ tube 200 includes a plurality of heat exchange tube sheets 210 fixedly connected and communicated with each other. The heat exchange tube sheet 210 is internally provided with a U-shaped slot hole 211. A plugging component 300 is installed and fixed between two adjacent mouth organ tubes 200. The plugging component 300 includes a support cylinder 310. Two plugging cylinders 320 are rotatably connected inside the support cylinder 310. Among them, a mesh cylinder 323 is installed and fixed inside one plugging cylinder 320. Molecular sieves capable of adsorbing moisture are contained inside the mesh cylinder 323. A connecting shaft 330 capable of driving the two plugging cylinders 320 to rotate is rotatably connected to the bottom of the support cylinder 310. A driving component 400 is arranged on the top of the L-shaped shell plate 100. The driving component 400 includes a transmission column 410 meshing and driving with the connecting shaft 330. A screw rod 420 capable of driving the transmission column 410 to linearly slide on the L-shaped shell plate 100 is screwed inside the transmission column 410.

[0020] Specifically, by arranging the sealing assembly 300 between the traditional multiple harmonica tubes 200, the sealing assembly 300 can control whether the top and bottom of the adjacent harmonica tubes 200 are connected, thereby realizing the use of the sealing assembly 300 to control the flow and evaporation path of the refrigerant between the multiple harmonica tubes 200. When the refrigerant flows and evaporates between the multiple harmonica tubes 200 at the same time, the refrigerant can achieve an efficient cooling effect. When the refrigerant only flows and evaporates between the harmonica tubes 200 in a local position, the refrigerant will be incompletely vaporized due to the shortened flow and evaporation path, thereby indirectly reducing the cooling degree of the refrigerant and realizing the regulation of the heat exchange cooling degree of the evaporator. By installing a molecular sieve inside the sealing assembly 300, the molecular sieve can absorb moisture when the refrigerant passes through the molecular sieve, thereby facilitating the drying of the refrigerant during the operation of the evaporator.

[0021] like Figure 4 and Figure 7 As shown, in this embodiment, a circular hole 1 311 is provided on the top and bottom of the support tube 310, and a circular hole 2 321 is provided on the outer side of the sealing tube 320. The circular hole 2 321 has the same size as the circular hole 1 311. When the circular hole 2 321 on the sealing tube 320 is connected with the circular hole 1 311 on the support tube 310, the refrigerant will flow between the support tube 310 and the sealing tube 320, and the two heat exchange tube sheets 210 arranged on both sides of the support tube 310 are in a connected state.

[0022] In this embodiment, the circular holes 2 321 on the two sealing cylinders 320 inside the same support cylinder 310 are distributed vertically, so that there is always a group of circular holes 1 311 and circular holes 2 321 at the top and bottom of the sealing component 300 in a connected state, so that the refrigerant can always pass through the sealing component 300.

[0023] like Figure 7 As shown, in this embodiment, a connecting tube 322 is fixed between the two sealing tubes 320, and both ends of the sealing tube 320 at the lower position inside the support tube 310 are closed, so that when the connecting shaft 330 rotates with the bottom sealing tube 320, the bottom sealing tube 320 rotates with the top sealing tube 320 through the connecting tube 322 to the same angle, so that the two sealing tubes 320 cooperate with the support tube 310 and there is always one sealing tube 320 in the state of opening the support tube 310, and the other sealing tube 320 is in the state of closing the support tube 310.

[0024] like Figure 4 and Figure 7As shown, in this embodiment, the connecting shaft 330 is fixedly connected to the sealing cylinder 320 at the corresponding position, a gear 331 is fixed to the bottom of the connecting shaft 330, and the driving assembly 400 also includes a motor 430 capable of driving the screw rod 420 to rotate. The motor 430 is fixedly connected to the L-shaped shell plate 100, and a plurality of racks 411 are fixed to the outer side of the transmission column 410, and the racks 411 are engaged with the gears 331 at the corresponding position for transmission.

[0025] In this embodiment, the length of the rack 411 is sufficient to drive the gear 331 to rotate 45 degrees, so that after the transmission column 410 carries the rack 411 through the gear 331, the gear 331 can drive the two sealing cylinders 320 to rotate 90 degrees through the connecting shaft 330, thereby adjusting the sealing cylinder 320 to open and close different positions on the support cylinder 310, wherein the bottom end of the connecting shaft 330 is rotatably connected to the L-shaped shell plate 100.

[0026] In this embodiment, when it is necessary to drive multiple blocking components 300 to operate through the driving component 400, the output end of the motor 430 rotates with the screw rod 420, and the transmission column 410 screwed together with the screw rod 420 slides to the left along the guide rail 120, so that the racks 411 at different positions on the transmission column 410 can rub the gears 331 at different positions to rotate in turn, and the gear 331 drives the blocking tube 320 to rotate through the connecting shaft 330, so as to achieve the effect of using the blocking tube 320 to block the circular hole 1311 on the support tube 310 or to open the circular hole 1311 of the support tube 310. The output end of the motor 430 can also rotate in the opposite direction with the screw rod 420 to return the transmission column 410 to its initial position. The initial position refers to Figure 4 At this time, the multiple sealing components 300 can satisfy the flow and evaporation of the refrigerant between all the harmonica tubes 200.

[0027] like Figure 8 As shown, in this embodiment, a sealing block 324 is installed at the open end of the blocking tube 320 at the upper position inside the support tube 310. The sealing block 324 is detachably sealed and fixed to the blocking tube 320. Figure 4 , opening the sealing block 324 can put the mesh tube 323 into the inside of the sealing tube 320. The molecular sieve contained in the mesh tube 323 can absorb moisture in the refrigerant, which helps to keep the refrigerant dry. The sealing block 324 and the sealing tube 320 can be installed to the opening of the sealing tube 320 by using a screw-on connection position relationship.

[0028] like Figure 3 、 Figure 5 and Figure 6As shown, in this embodiment, two interface pipes 212 are fixed to both the top and bottom of the heat exchange fin 210. The interface pipe 212 is connected to the U-shaped slot hole 211, and adjacent two interface pipes 212 are connected and fixed. One corrugated tube 200 includes a plurality of heat exchange fins 210 fixed side by side. The top and bottom of the plurality of heat exchange fins 210 are conducted through the U-shaped slot holes 211, so that the refrigerant flowing into the corrugated tube 200 can be subdivided into multiple strands and flow and evaporate dispersedly, which is beneficial to improving the vaporization effect of the refrigerant.

[0029] As Figure 1 - Figure 3 shown, in this embodiment, a liquid inlet pipe 111 and a liquid outlet pipe 112 are respectively fixed to the outer sides of the two side plates 110. The liquid inlet pipe 111 and the liquid outlet pipe 112 are respectively connected to the interface pipes 212 on the corresponding corrugated tubes 200, so that the refrigerant is transported to the inside of the liquid inlet pipe 111 through an external expansion valve, and then flows into the interface pipe 212 and the heat exchange fin 210 from the Figure 3 liquid inlet end in it, and the heat-exchanged refrigerant then flows from the liquid outlet end to the liquid outlet pipe 112.

[0030] As Figure 3 and Figure 5 shown, in this embodiment, the support cylinder 310 is fixed between the interface pipes 212 on two corresponding corrugated tubes 200. When the circular hole 311 on the support cylinder 310 is in an open state, the support cylinder 310 is in a connected state with the interface pipe 212, which is convenient for the refrigerant to flow between adjacent two corrugated tubes 200 through the support cylinder 310.

[0031] As Figure 7 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 to the support cylinder 310. During the process of replacing the mesh cylinder 323, an external drill bit can be inserted into the hexagonal groove on the surface of the sealing cover 312, so that the drill bit rotates the sealing cover 312 to open or close it.

[0032] Embodiment 2, on the basis of Embodiment 1, in order to filter impurities in the refrigerant and effectively prevent problems such as system blockage and component wear caused by impurities.

[0033] As Figure 8 shown, in this embodiment, a non-woven fabric filter element 325 can be placed in the plugging cylinder 320 at the upper position inside the support cylinder 310. The non-woven fabric is a material formed by combining fibers through mechanical or chemical methods, and has good air permeability and filtering performance, and can effectively remove minute 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, which is convenient for being processed into the cylindrical structure shown in the figure.

[0034] In this embodiment, the sealing component 300 of the present application mainly has three sealing cylinders 320 inside which non-woven filter elements 325 or molecular sieves can be placed. Therefore, non-woven filter elements 325 can be placed inside an appropriate number of sealing cylinders 320 as needed, and molecular sieves can be placed inside an appropriate number of sealing cylinders 320. This can not only dry the refrigerant but also purify the refrigerant.

[0035] In the present invention, reference is made to Figure 1 The cold storage device 500 can be installed between multiple harmonica tubes 200, which makes it easier for cold energy to be transferred to the cold storage device 500. The cold storage device 500 is a component of the prior art, and its specific working principle and installation principle will not be described in detail here.

[0036] 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 embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0037] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A cold storage evaporator for a vehicle, characterized in that: Comprising: An L-shaped shell plate (100), with side plates (110) fixed at both ends of the L-shaped shell plate (100); Multiple harmonica tubes (200), all fixedly connected to the L-shaped shell plate (100). The harmonica tube (200) includes multiple heat exchange tube sheets (210) connected and fixed. A U-shaped slot hole (211) for refrigerant flow and evaporation is provided inside the heat exchange tube sheet (210); Multiple plugging components (300), respectively fixed between two corresponding harmonica tubes (200). The plugging component (300) includes a support cylinder (310). Two plugging cylinders (320) are rotatably connected inside the support cylinder (310). A mesh cylinder (323) is installed and fixed inside one plugging cylinder (320), and molecular sieve is contained inside the mesh cylinder (323). A connecting shaft (330) capable of driving the two plugging cylinders (320) to rotate is rotatably connected to the bottom of the support cylinder (310); A driving component (400), arranged on the top of the L-shaped shell plate (100), for driving the multiple connecting shafts (330) to rotate successively one after another. The driving component (400) includes a transmission column (410) meshing and driving with the connecting shaft (330), and a screw rod (420) is screwed inside the transmission column (410).

2. The vehicle cold storage evaporator according to claim 1, characterized in that: Round holes one (311) are penetrated and opened at both the top and bottom of the support cylinder (310). Round holes two (321) are penetrated and opened on the outer side of the plugging cylinder (320), and the round hole two (321) has the same size as the round hole one (311).

3. The cold storage evaporator for a vehicle according to claim 1, characterized in that: A connecting pipe (322) is fixed between the two plugging cylinders (320), and both ends of the plugging cylinder (320) at the lower position inside the support cylinder (3) are closed.

4. The cold storage evaporator for a vehicle according to claim 1, characterized in that: The connecting shaft (330) is fixedly connected to the corresponding plugging cylinder (320), and a gear (331) is fixed at the bottom of the connecting shaft (330).

5. The cold storage evaporator for a vehicle according to claim 4, characterized in that: The driving component (400) further includes a motor (430) capable of driving the screw rod (420) to rotate. Multiple racks (411) are fixed on the outer side of the transmission column (410), and the rack (411) meshes and drives with the corresponding gear (331).

6. The cold storage evaporator for a vehicle according to claim 1, characterized in that: A sealing block (324) is installed at the open end of the plugging cylinder (320) at the upper position inside the support cylinder (310), and the sealing block (324) is detachably and sealingly fixed to the plugging cylinder (320).

7. The cold storage evaporator for a vehicle according to claim 1 or 6, characterized in that: A non-woven fabric filter element (325) is placed inside the plugging cylinder (320) at the upper position inside the support cylinder (310).

8. The cold storage evaporator for a vehicle according to claim 1, characterized in that: Two interface pipes (212) are fixed at both the top and bottom of the heat exchange tube sheet (210). The interface pipe (212) is communicated with the U-shaped slot hole (211), and adjacent two interface pipes (212) are connected and fixed.

9. The cold storage evaporator for a vehicle according to claim 8, characterized in that: A liquid inlet pipe (111) and a liquid outlet pipe (112) are respectively fixed on the outer sides of the two side plates (110). The liquid inlet pipe (111) and the liquid outlet pipe (112) are respectively communicated with the interface pipes (212) on the corresponding harmonica tubes (200).

10. The cold storage evaporator for a vehicle according to claim 9, characterized in that: The support cylinder (310) is fixed between the interface pipes (212) on the two corresponding harmonica tubes (200), and a sealing cover (312) is detachably fixed to the top of the support cylinder (310).

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