Novel evaporator with cold storage module based on micro-channel heat exchanger

Abstract

A novel evaporator with a cold storage module based on a micro-channel heat exchanger comprises flat pipes, fins, a left collecting pipe, a right collecting pipe, a cold storage shell, a cold storage shell front cover and a cold storage shell rear cover. The micro-channel evaporator and the cold storage module are combined, a traditional cooling pipeline is replaced with a channel plate by avoiding welding spot coating and used for being connected with automobile heat management parts, meanwhile, all parts such as an electronic expansion valve, a stop valve, a one-way valve and a temperature and pressure sensor in a heat management system are integrated, the arrangement space is compact, and the heat management system is convenient to assemble and disassemble. The utilization efficiency of energy is improved, and energy loss is reduced. The integration of the heat management refrigerant side also reduces the risk of leakage and failure, and improves the stability of the heat management system.

Description

Technical Field

[0001] The present invention relates to the field of integrated design of automobile thermal management, and in particular to a novel evaporator with a cold storage module based on a microchannel heat exchanger. Background Art

[0002] With the rapid development of the new energy vehicle industry, the development and application of in-vehicle refrigerators has become a major indicator for enhancing the competitiveness of future automotive products in order to improve the user experience. As the core component of in-vehicle refrigerators, the cold storage module is one of the main research and development directions for heat exchangers built into in-vehicle refrigerators. This invention proposes a novel evaporator with a cold storage module based on a microchannel heat exchanger. The microchannel heat exchanger and the cold storage module are integrated into one unit. While rapidly cooling the refrigerator cavity, the unit can also store cold energy to maintain the temperature inside the refrigerator compartment when the compressor stops. This approach ensures the safe, orderly, and efficient operation of each cycle while also saving space and costs. Summary of the Invention

[0003] The purpose of the present invention is to propose a new evaporator with a cold storage module based on a microchannel heat exchanger. The microchannel evaporator is combined with the cold storage module, which greatly improves the cold storage efficiency inside the cold storage module while optimizing the wind field and increasing the overall external heat exchange area of ​​the cold storage module, making the cold storage module more effective when used alone for cooling.

[0004] The present invention is implemented through the following technical solutions, including flat tubes, fins, a left collecting tube, a right collecting tube, a cold storage shell, a front cover of the cold storage shell, and a rear cover of the cold storage shell. The flat tubes are welded together with the fins, the left collecting tube, and the right collecting tube. The front cover and the rear cover of the cold storage shell have holes through which the flat tubes are inserted. After assembly, the interior of the cold storage shell is filled with refrigerant. The evaporator fins are three-section fins, arranged sequentially on the left side of the cold storage shell, inside the cold storage shell, and on the right side of the cold storage shell. During assembly, the left collecting tube, flat tubes, the front cover of the cold storage shell, and the cold storage shell are first assembled. After the cold storage shell is installed, the fins inside the cold storage shell are inserted, followed by the rear cover of the cold storage shell and the right collecting tube. Finally, the fins on the left and right sides of the cold storage shell are sequentially inserted.

[0005] Furthermore, the novel evaporator with a cold storage module based on a microchannel heat exchanger is characterized in that flat tube holes that are consistent with the left and right collecting pipes are evenly distributed on the front cover and the rear cover of the cold storage shell, and the flat tube collecting pipe assembly that matches the left collecting pipe is inserted along the holes in the front cover of the cold storage shell, passes through the rear cover of the cold storage shell, and is finally combined with the right collecting pipe.

[0006] Furthermore, the novel evaporator with a cold storage module based on a microchannel heat exchanger is characterized in that there are two holes at the upper and lower diagonals of the cold storage module shell, which are used to add cold storage agent and place sensors. The holes below the cold storage module shell are reserved holes for vacuum filling. When the cold storage agent is vacuum filled, the lower holes are filled, and the upper holes are connected to a vacuum pump to draw vacuum, ensuring that there are no hidden small bubbles inside the cold storage agent when filling.

[0007] Compared with the prior art, the present invention has the following beneficial effects:

[0008] First, the integrated cold storage module and evaporator save space in the box, improving space utilization and simplifying vehicle installation. Second, the entire flat tube passes through the cold storage module, eliminating welds within the module and reducing the impact of the coolant's phase change within the housing on weld strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of a novel evaporator with a cold storage module based on a microchannel heat exchanger of the present invention, including 1-flat tube, 2-left collecting pipe, 3-fin, 4-front cover, 5-cold storage shell, 6-cold storage agent filling port, 7-rear cover, 8-right collecting pipe, and 9-vacuum filling reserved hole.

[0010] Figure 2 This is a schematic diagram of a novel evaporator flat tube with a cold storage module based on a microchannel heat exchanger of the present invention.

[0011] Figure 3 This is a schematic diagram of the left collecting pipe of an evaporator with a new type of cold storage module based on a microchannel heat exchanger of the present invention.

[0012] Figure 4 This is a schematic diagram of a novel evaporator fin with a cold storage module based on a microchannel heat exchanger of the present invention.

[0013] Figure 5 This is a schematic diagram of a new evaporator front cover with a cold storage module based on a microchannel heat exchanger of the present invention.

[0014] Figure 6 This is a schematic diagram of a novel evaporator cold storage shell with a cold storage module based on a microchannel heat exchanger of the present invention.

[0015] Figure 7 This is a schematic diagram of a new evaporator rear cover with a cold storage module based on a microchannel heat exchanger of the present invention.

[0016] Figure 8 This is a schematic diagram of the right collecting pipe of an evaporator with a new type of cold storage module based on a microchannel heat exchanger of the present invention. DETAILED DESCRIPTION

[0017] The following describes an embodiment of the present invention in detail with reference to the accompanying drawings. This embodiment is based on the technical solution of the present invention and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiment. Example

[0018] As shown in the schematic diagram of a novel evaporator with a cold storage module based on a microchannel heat exchanger of the present invention ( Figure 1 ), the present invention shows the assembly and working process of the evaporator as an embodiment of a new evaporator with a cold storage module based on a microchannel heat exchanger, including 1-flat tube, 2-left collecting pipe, 3-fin, 4-front cover, 5-cold storage shell, 6-cold storage agent filling port, 7-rear cover, 8-right collecting pipe, 9-vacuum filling reserved hole.

[0019] As shown in the schematic diagram of the left manifold of the evaporator with a new type of cold storage module based on a microchannel heat exchanger of the present invention ( Figure 3 ), the left collecting pipe (2) is evenly distributed with flat tube holes, and the specifications are the same as those of the evaporator flat tube ( Figure 2 ) are consistent. During assembly, the flat tube (1) is first inserted into the left collecting tube (2). In this embodiment, the number of flat tubes is 32.

[0020] As shown in the schematic diagram of the front cover of a novel evaporator with a cold storage module based on a microchannel heat exchanger of the present invention ( Figure 5 ), 32 flat tube holes are evenly distributed on the front cover, and the specifications are the same as those of the evaporator flat tube with a new type of cold storage module based on a microchannel heat exchanger of the present invention ( Figure 2 ) are consistent. After the left collecting pipe and the flat tube are installed, insert the front cover along the flat tube toward the hole of the flat tube and lock it at 1 / 3 of the length of the flat tube.

[0021] As shown in the schematic diagram of a novel evaporator fin with a cold storage module based on a microchannel heat exchanger of the present invention ( Figure 4 ), the fin in the novel evaporator with a cold storage module based on a microchannel heat exchanger of the present invention has three sections. After the left collecting pipe, flat tubes, and front cover are installed, the first section of the fin is inserted into the rear part of the front cover. This section of the fin is located in the middle section of the flat tube. After being clamped by the flat tube, the cold storage shell is installed, as shown in the schematic diagram of the cold storage shell of the novel evaporator with a cold storage module based on a microchannel heat exchanger of the present invention ( Figure 6 ), the cold storage shell is fitted with the front cover and sealed on one side.

[0022] After the left collecting pipe, flat tube, front cover, fin and cold storage shell are installed, the rear cover is installed. The rear cover is as shown in the schematic diagram of the rear cover of the evaporator with a new cold storage module based on a microchannel heat exchanger of the present invention ( Figure 7), the rear cover and the front cover are symmetrical parts, and also have 32 flat tube holes evenly distributed. After completing the above steps, insert the rear cover through the flat tube holes along the flat tubes, and finally buckle it on the edge of the cold storage shell. At this time, the entire cold storage shell is sealed on both sides.

[0023] Finally, the right collecting pipe is installed. The right collecting pipe is as shown in the schematic diagram of the right collecting pipe of the evaporator with a new type of cold storage module based on a microchannel heat exchanger of the present invention ( Figure 8 ), which is symmetrical with the left collecting pipe and has 32 flat tube holes evenly distributed. After the left collecting pipe, flat tubes, fins, front cover, cold storage shell, and rear cover are installed, the 32 flat tubes are aligned with the 32 flat tube holes on the right collecting pipe and inserted into the right collecting pipe. At this time, the two ends of the flat tubes are connected to the collecting pipe, as shown in the schematic diagram of a novel evaporator with cold storage module based on a microchannel heat exchanger of the present invention ( Figure 1 ), insert the other two fin sections between the left collecting pipe and the front cover, and between the rear cover and the right collecting pipe respectively to complete the assembly.

[0024] When the evaporator is in operation, the refrigerant is first injected from the refrigerant filling port (6). Before injection, the vacuum filling reserved hole (9) is sealed with a bolt. The refrigerant first flows into the left collecting pipe, flows through the flat tubes and the refrigerant module, and finally flows out of the right collecting pipe. The fins on the outside of the refrigerant module are used to assist the heat exchange between the air and the flat tubes, and the fins on the inside of the refrigerant module are used to assist the heat exchange between the refrigerant and the flat tubes.

[0025] The above embodiments are merely illustrative of the design principles and uses of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein shall be encompassed by the claims of the present invention.

Claims

1. A novel evaporator with a cold storage module based on a microchannel heat exchanger, comprising flat tubes, fins, a left collecting pipe, a right collecting pipe, a cold storage shell, a cold storage shell front cover, and a cold storage shell rear cover, wherein: The flat tubes are welded together with the fins, the left collecting pipe and the right collecting pipe. Holes are opened in the front cover and the rear cover of the cold storage shell, and the flat tubes are inserted from the holes. After assembly, the cold storage shell is filled with refrigerant. The evaporator fins are three-section fins, which are arranged in sequence on the left side of the cold storage shell, inside the cold storage shell, and right side of the cold storage shell. During assembly, the left collecting pipe, flat tubes, front cover of the cold storage shell, and cold storage shell are assembled first. After the cold storage shell is installed, the fins inside the cold storage shell are inserted, and then the rear cover of the cold storage shell and the right collecting pipe are installed. Finally, the fins on the left and right sides of the cold storage shell are inserted in sequence.

2. The novel evaporator with a cold storage module based on a microchannel heat exchanger according to claim 1, characterized in that: Flat tube holes that are consistent with the left and right collecting pipes are evenly distributed on the front cover and the rear cover of the cold storage shell. The flat tube collecting pipe assembly that matches the left collecting pipe is inserted along the holes in the front cover of the cold storage shell, passes through the rear cover of the cold storage shell, and is finally combined with the right collecting pipe.

3. The novel evaporator with a cold storage module based on a microchannel heat exchanger according to claim 1, characterized in that: There are two holes at the upper and lower diagonals of the cold storage module shell, which are used to add coolant and place sensors. The holes at the bottom of the cold storage module shell are reserved for vacuum filling. When the coolant is added under vacuum, the lower holes are filled and the upper holes are connected to the vacuum pump to draw vacuum, ensuring that there are no hidden small bubbles inside the coolant when filling.

Images