Double-layer flat tube evaporator

Abstract

The utility model relates to a double-layer flat tube evaporator which comprises a left row of flat tube groups, a right row of flat tube groups and liquid collecting tubes arranged on the left sides and the right sides of the flat tube groups, the flat tube groups and the liquid collecting tubes form a core body, the left row of flat tube groups and the right row of flat tube groups are composed of a plurality of flat tubes which are arranged in parallel, and fins are arranged between every two adjacent flat tubes. The heat exchanger is characterized in that partition plates are arranged in the liquid collecting pipes on the left side and the right side, a plurality of back-and-forth flow channels are formed between the liquid collecting pipes on the left side and the right side and the flat pipes through the partition plates, a liquid inlet and a liquid outlet are formed in the upper portion of the liquid collecting pipe on one side, a liquid inlet assembly is installed outside the liquid inlet, and a liquid outlet assembly is installed outside the liquid outlet. The utility model has the advantages of compact overall structure, small floor area, multiple functions, firm fixation, convenient installation, disassembly and maintenance and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of evaporators and relates to a double-layer flat-tube evaporator. Background Art

[0002] An evaporator is a component of a refrigeration system and belongs to a type of heat exchanger. It can convert a gas or vapor into a liquid and transfer the heat in the tubes to the air near the tubes in a very fast manner. The working process of the evaporator is an exothermic process, so the temperature of the evaporator is relatively high. Especially for the evaporator used in an automobile, due to the long-term driving of the automobile, the following problems exist. First, the evaporator is prone to heat during long-term operation and has a high demand for heat dissipation, so the refrigeration effect of the evaporator is particularly important. Second, due to the vibration and shaking generated during the driving of the automobile itself, the stability of the evaporator after installation and the stability of the connection parts between the evaporator and other components are particularly important. Therefore, a double-layer flat-tube evaporator is designed to overcome the above problems. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies existing in the prior art and provide a double-layer flat-tube evaporator with a compact overall structure, small floor area, good refrigeration effect, firm fixation, and convenient installation, disassembly, and maintenance.

[0004] The utility model is realized by the following technical solutions: A double-layer flat-tube evaporator includes two rows of flat-tube groups on the left and right and liquid collecting pipes installed on the left and right sides of the flat-tube groups. The flat-tube groups and the liquid collecting pipes form a core. Among them, the two rows of flat-tube groups on the left and right are composed of multiple parallel flat tubes, and fins are installed between two adjacent flat tubes. Partition plates are arranged in the liquid collecting pipes on the left and right sides. The partition plates form multiple back-and-forth flow channels between the liquid collecting pipes on the left and right sides and the flat tubes, and a liquid inlet and a liquid outlet are installed above one of the liquid collecting pipes. A liquid inlet assembly is installed outside the liquid inlet, and a liquid outlet assembly is installed outside the liquid outlet.

[0005] Preferably: The liquid collecting pipes on the left and right sides are respectively a left liquid collecting pipe and a right liquid collecting pipe. Each liquid collecting pipe is a whole piece, and the opposite sides are connected to the two rows of flat tubes. Partition plates are installed inside the left liquid collecting pipe and the right liquid collecting pipe. The partition plates are a horizontal partition plate and a vertical partition plate. The horizontal partition plate and the vertical partition plate form multiple connected flow channels between the left liquid collecting pipe and the right liquid collecting pipe.

[0006] Preferably, a left vertical partition is provided on the left liquid collecting pipe. The left vertical partition is located in the middle of the left liquid collecting pipe, dividing the left liquid collecting pipe into two independent chambers on the left and right. The two independent chambers respectively correspond to a row of flat pipes. A left horizontal partition is also installed between the two independent chambers, dividing the two independent chambers on the left and right into 4 chambers. A right vertical partition is provided in the right liquid collecting pipe. The right vertical partition is located in the upper middle position of the right liquid collecting pipe, dividing the upper part of the right liquid collecting pipe into two chambers on the left and right. Each chamber corresponds to a row of flat pipes and is connected below. A right horizontal partition is provided at the right vertical partition, and the right horizontal partition is located below the left horizontal partition.

[0007] Preferably, an outer shell is also installed on the outer sides of the left liquid collecting pipe and the right liquid collecting pipe. The outer shell is integrally designed or two separate outer shells are spliced together. An outlet shell opening and an inlet shell opening are provided above the outer shell for placing the inlet and outlet ports.

[0008] Preferably, a liquid outlet assembly and a liquid inlet assembly are installed at the inlet and outlet ports. The liquid inlet assembly is composed of a liquid inlet pipe and a liquid inlet interface. The liquid outlet assembly is composed of a liquid outlet pipe and a liquid outlet joint. The diameter of the liquid outlet pipe is larger than that of the liquid inlet pipe, so as to generate a certain pressure during liquid inlet.

[0009] Preferably, a connecting piece is provided outside the outer shell, which is convenient for connecting and fixing with other devices.

[0010] The beneficial effects of the present utility model are as follows: By setting a "narrow-mouth" liquid inlet pipe (mouth) and a "wide-mouth" liquid outlet pipe (mouth), through the design of small inlet and large outlet, it can be ensured that when the coolant enters the "narrow-mouth" liquid inlet pipe, the inflow rate is increased due to the pressure effect, so as to ensure that the coolant quickly flows through and fills each flat pipe, thereby improving the overall working efficiency. The flat pipes are designed front and back, which can well increase the overall refrigeration area and thus ensure the refrigeration effect. The outer shell provided by the present utility model can not only ensure the overall aesthetics, but also well protect the connection part between the outlet shell opening (inlet shell opening) and the inlet (outlet port), greatly improving the overall strength and thus extending the service life of the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0012] Figure 2 It is Figure 1 a schematic view in the direction A of

[0013] Figure 3 It is Figure 1 a schematic view in the direction B of

[0014] Figure 4This is a schematic diagram of the internal structure of the present utility model. Specific embodiments

[0015] To enable those of ordinary skill in the art to more clearly understand the purpose, technical solutions, and advantages of the present utility model, the following further elaborates on the present utility model in conjunction with the accompanying drawings and embodiments.

[0016] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "lateral", "vertical", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and does not indicate or imply that the device or component referred to must have a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0017] The following will introduce the present utility model in detail with reference to the accompanying drawings: As Figure 1-2 shown, a double-layer flat tube evaporator includes two rows of flat tube groups 1 on the left and right and liquid collecting tubes 2 installed on the left and right sides of the flat tube groups 1. The flat tube groups 1 and the liquid collecting tubes 2 form a core. Among them, the two rows of flat tube groups 1 on the left and right are composed of multiple parallel flat tubes 3. Fins 4 are installed between two adjacent flat tubes 3. Partition plates are provided in the liquid collecting tubes 2 on both sides, and the partition plates form multiple back-and-forth flow channels between the liquid collecting tubes 2 on both sides and the flat tubes 3. An inlet 5 and an outlet 6 are installed above one of the liquid collecting tubes 2. A liquid inlet assembly 7 is installed outside the inlet 5, and a liquid outlet assembly 8 is installed outside the outlet 6. The liquid collecting tubes 2 on both sides are respectively a left liquid collecting tube 9 and a right liquid collecting tube 10. Each liquid collecting tube is a single integral one, and the opposite sides are connected to the two rows of flat tubes. Partition plates are installed inside the left liquid collecting tube 9 and the right liquid collecting tube 10. The partition plates are horizontal partition plates and vertical partition plates, and the horizontal partition plates and the vertical partition plates form multiple connected flow channels between the left liquid collecting tube 9 and the right liquid collecting tube 10.

[0018] In the present utility model, liquid collecting tubes and flat tubes are provided. The flat tubes are multiple and arranged front and back. Partition plates are provided on the liquid collecting tubes. Through the setting of the partition plates, the flow direction of the internal coolant can be well adjusted, so as to ensure that the coolant flows through each flat tube, thereby improving the overall refrigeration effect and the overall working efficiency.

[0019] A left vertical partition 13 is provided on the left liquid collecting pipe 9. The left vertical partition 13 is located at the middle position of the left liquid collecting pipe 9 and divides the left liquid collecting pipe 9 into two independent chambers on the left and right. The two independent chambers respectively correspond to a row of flat pipes. And a left horizontal partition 14 is also installed between the two independent chambers, dividing the two independent chambers on the left and right into 4 chambers. A right vertical partition 15 is provided in the right liquid collecting pipe 10. The right vertical partition 15 is located at the upper middle position of the right liquid collecting pipe 10 and divides the upper part of the right liquid collecting pipe 10 into two chambers on the left and right. Each chamber respectively corresponds to a row of flat pipes and their lower parts are communicated. And a right horizontal partition 16 is provided at the right vertical partition 15, and the right horizontal partition 16 is located below the left horizontal partition 14.

[0020] As Figure 3 shown, an outer shell 17 is also installed on the outer sides of the left liquid collecting pipe 9 and the right liquid collecting pipe 10. The outer shell 17 is integrally designed or two separate outer shells are spliced together. And a liquid outlet shell opening 18 and a liquid inlet shell opening 19 are provided above the outer shell 17 for placing the liquid inlet 5 and the liquid outlet 6.

[0021] The outer shell of the present utility model can not only make the whole more beautiful, but also well protect the connection part between the liquid outlet shell opening (liquid inlet shell opening) and the liquid inlet (liquid outlet), greatly improving the overall strength, thereby increasing the service life of the component.

[0022] Liquid outlet assemblies 8 and liquid inlet assemblies 7 are installed at the liquid inlet 5 and the liquid outlet 6 respectively. The liquid inlet assembly 7 is composed of a liquid inlet pipe 11 and a liquid inlet connector 21. The liquid outlet assembly 8 is composed of a liquid outlet pipe 12 and a liquid outlet joint 22. And the diameter of the liquid outlet pipe 12 is larger than that of the liquid inlet pipe 11 to generate a certain pressure during liquid inlet. A connector 20 is provided outside the outer shell 17 to facilitate connection and fixation with other devices.

[0023] By setting a "narrow-mouth" liquid inlet pipe (opening) and a "wide-mouth" liquid outlet pipe (opening) in the present utility model, through the design of small inlet and large outlet, it can be ensured that when the coolant enters the "narrow-mouth" liquid inlet pipe, the inflow speed is increased due to the pressure effect, so as to ensure that the coolant quickly flows through and fills each flat pipe, thereby improving the overall working efficiency. And the flat pipes are designed front and back, which can well increase the overall refrigeration area and thus ensure the refrigeration effect.

[0024] The liquid inlet assembly and the liquid outlet assembly provided in the present utility model are convenient for connection with other components through the liquid inlet connector and the liquid outlet joint, ensuring the practicability of the present utility model. And through the connector on the outer side of the outer shell, the stability of the evaporator of the present utility model after installation and fixation can be well ensured. The shape and position of the connector can be adjusted according to the actual situation without any limitation.

[0025] For the convenience of understanding, Figure 4This is a schematic diagram of the internal structure of the present utility model. The flow direction of the coolant in the flat tube of the present utility model is indicated by arrow directions. The coolant of the whole present utility model flows through each flat tube, greatly improving the overall refrigeration effect and thus enhancing the working efficiency.

[0026] The specific embodiments described herein are only illustrative of the principles and effects of the present utility model and are not intended to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A double-layer flat tube evaporator, comprising two left and right rows of flat tube groups and liquid collecting pipes installed on the left and right sides of the flat tube groups, the flat tube groups and the liquid collecting pipes constitute a core body, wherein the left and right rows of flat tube groups are composed of a plurality of flat tubes arranged in parallel, and fins are installed between two adjacent flat tubes, characterized in that: Partitions are provided in the liquid collecting pipes on the left and right sides, which form multiple back-and-forth flow channels between the liquid collecting pipes on the left and right sides and the flat tubes, and a liquid inlet and a liquid outlet are installed above the liquid collecting pipe on one side, a liquid inlet component is installed outside the liquid inlet, and a liquid outlet component is installed outside the liquid outlet.

2. The double-layer flat tube evaporator according to claim 1, characterized in that: The collecting pipes on the left and right sides are respectively a left collecting pipe and a right collecting pipe, each collecting pipe is a whole pipe, and is connected to two rows of flat tubes on two opposite sides, and partitions are installed inside the left collecting pipe and the right collecting pipe, and the partitions are horizontal partitions and vertical partitions. The horizontal partitions and the vertical partitions form a plurality of connected flow channels between the left collecting pipe and the right collecting pipe.

3. The double-layer flat tube evaporator according to claim 2, characterized in that: The left collecting pipe is provided with a left vertical partition, which is located in the middle of the left collecting pipe and divides the left collecting pipe into two independent left and right chambers. The two independent chambers correspond to a row of flat tubes respectively, and a left horizontal partition is also installed between the two independent chambers to divide the two independent left and right chambers into four chambers. The right collecting pipe is provided with a right vertical partition, which is located in the upper middle position of the right collecting pipe and divides the upper part of the right collecting pipe into two left and right chambers. Each chamber corresponds to a row of flat tubes respectively and is connected below. A right horizontal partition is provided at the right vertical partition, and the right horizontal partition is located below the left horizontal partition.

4. The double-layer flat tube evaporator according to claim 3, characterized in that: A shell is also installed outside the left and right liquid collecting pipes. The shell is an integrated design or two separate shells are spliced ​​together, and a liquid outlet shell port and a liquid inlet shell port are opened on the top of the shell for placing the liquid inlet and the liquid outlet.

5. The double-layer flat tube evaporator according to claim 4, characterized in that: The liquid inlet and the liquid outlet are both installed with a liquid outlet assembly and a liquid inlet assembly. The liquid inlet assembly consists of a liquid inlet pipe and a liquid inlet interface, and the liquid outlet assembly consists of a liquid outlet pipe and a liquid outlet joint. The diameter of the liquid outlet pipe is larger than the diameter of the liquid inlet pipe, so that pressure is generated when liquid is inhaled.

6. The double-layer flat tube evaporator according to claim 4, characterized in that: A connecting piece is provided outside the shell.

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