CN219693653U

CN219693653U - Heat exchange tube structure of cold storage air cooler

Info

Publication number: CN219693653U
Application number: CN202320525510.5U
Authority: CN
Inventors: 李云兵; 杨广山
Original assignee: Qingdao Keling Refrigeration Equipment Co ltd
Current assignee: Qingdao Keling Refrigeration Equipment Co ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-09-15
Anticipated expiration: 2033-03-17

Abstract

The utility model discloses a heat exchange tube structure of a cold air cooler, wherein a tube evaporator is arranged in a cold air cooler shell, two ends of the tube evaporator are respectively connected with an expansion valve and one interface of a compressor, the tube evaporator comprises fins, a plurality of tube bodies arranged in the fins and a plurality of U-shaped joint tubes which are used for connecting the tube bodies in series, wherein the tube bodies are three layers of hollow sleeves, an inner layer tube, an intermediate layer tube and an outer layer tube are connected through connecting sheets, the U-shaped joint tubes are hollow tubes, and the U-shaped joint tubes are welded with the outer layer tubes. The utility model adopts the single-sided air cooler with three layers of sleeves, and the energy-saving effect can reach 20%; under the condition that the equipment is suddenly powered off or the temperature reaches a set value and stops, the cold energy storage guarantee time is 10% longer than that of the existing structure.

Description

Heat exchange tube structure of cold storage air cooler

Technical Field

The utility model relates to a heat exchange tube structure of a cold storage air cooler, and belongs to the technical field of heat exchangers.

Background

The cold storage air cooler is a type of cold storage evaporator (the cold storage air cooler is commonly known in the industry), and the cold storage air cooler has the function of heat exchange with a cooled medium, gasifying saturated refrigeration and taking away heat in the cold storage. The cold storage air cooler mainly comprises 5 important parts such as a cooling heat exchange calandria, an axial flow fan, a liquid distributor, a defrosting assembly, a water receiving disc and the like. The high-pressure normal-temperature liquid refrigerant from the condenser is throttled by the thermal expansion valve and then directly enters the liquid separator of the cold air blower of the refrigeration house to be evenly separated, and then is sent into the heat exchange calandria to be gasified and absorbed. The axial flow fan is responsible for carrying out forced convection circulation on the cold air cooler of the cold storage and the air in the cold storage so as to achieve the purpose of refrigeration. The defrosting assembly is used for defrosting the cold air cooler of the refrigerator, and the water receiving tray is used for receiving the defrosted water. The cooling heat exchange calandria of the single-sided refrigeration house air cooler is formed by arranging a plurality of heat exchange single pipes after two ends of the heat exchange single pipes are connected by U-shaped joint pipes, and the pipe body of each heat exchange single pipe is a hollow pipe.

In application number 201810315158.6, a high-efficiency heat exchange tube, a heat exchanger with the heat exchange tube and an air conditioner are disclosed, as shown in fig. 7-9, in order to enhance heat exchange efficiency, a partition 3 is arranged in a vertical tube body of a main tube 11, the partition is made of a metal partition plate 31, preferably made of a copper material or an aluminum material, and the partition plate 31 is distributed along the length direction of the main tube, so that the vertical tube body of the main tube 11 can be partitioned into a plurality of channels 32 for medium circulation by the partition plate 31. For the refrigeration house, when the equipment is suddenly powered off or the temperature reaches a set value and stops, the cold energy storage guarantee time is an index reflecting the performance of the refrigeration house, and the shorter the time is, the larger the power consumption is. In the prior art, no matter the structure of the split pipe body is proposed in a single pipe or a patent, the split pipe body has no great help to the cold energy storage guarantee time, and a structure with good energy saving effect needs to be researched.

Disclosure of Invention

In order to overcome the difficulty, the company organizes and develops a heat exchange tube structure of the cold air cooler of the refrigeration house, the energy saving capacity can reach 20%, and the cold energy holding time is 10% longer than that of the original single-sided cold air cooler.

In order to achieve the above purpose, the utility model adopts the technical means that: a heat exchange tube structure of a cold air cooler of a refrigeration house is characterized in that a tube type evaporator is arranged in a cold air machine shell, two ends of the tube type evaporator are respectively connected with an expansion valve and one connector of a compressor, the tube type evaporator comprises fins and a plurality of tube bodies arranged in the fins, and a plurality of U-shaped joint tubes connected with the tube bodies in series, wherein the tube bodies are three layers of hollow sleeves, an inner layer tube, a middle layer tube and an outer layer tube are connected through connecting sheets, the U-shaped joint tubes are hollow tubes, and the U-shaped joint tubes are connected with the outer layer tube in a welded mode.

Further, the pipe diameter ratio of the inner layer pipe, the middle layer pipe and the outer layer pipe is 1:1.5-2:2.5-4.

Further, the connecting pieces are arranged at two ends of the pipe body.

Further, the connecting piece connected among the inner layer tube, the middle layer tube and the outer layer tube is in a shape of a straight line or a cross.

The utility model has the beneficial effects that: the energy-saving effect can reach 20% by adopting a single-sided air cooler with three layers of sleeves; under the condition that the equipment is suddenly powered off or the temperature reaches a set value and stops, the cold energy storage guarantee time is 10% longer than that of the existing structure.

Drawings

The utility model is further illustrated in the following figures and examples.

FIG. 1 is a schematic view of a pipe body structure of the present utility model;

fig. 2 is a schematic diagram of an application structure of the utility model in a single-sided refrigeration house air cooler.

In the figure: 1. the shell, 2, the fan, 3, the tubular evaporator, 31, inlayer pipe, 32, intermediate layer pipe, 33, inlayer pipe, 4, expansion valve, 5, compressor, 6, condenser, 7, electrical apparatus control box.

Detailed Description

Example 1

The application of the heat exchange tube structure of the refrigeration house air cooler in the single-sided refrigeration house air cooler shown in figure 2 comprises a shell 1 with an opening on one side, a fan 2 is arranged on the opposite side of the opening surface of the shell 1, a tube evaporator 3 is arranged in the shell 1, two ends of the tube evaporator 3 are respectively connected with one interface of an expansion valve 4 and a compressor 5, and an inlet and an outlet of a condenser 6 are respectively connected with the other interface of the expansion valve 4 and the compressor 5. Wherein the fans 2 are typically provided in two. The electric control box 7 is arranged on a panel of one surface of the shell, the control circuit and the switch are arranged in the electric control box, and the control circuit is electrically connected with the compressor 5 and the condenser 6. A temperature sensor is arranged in the shell 1, and a control circuit is connected with the temperature sensor and the fan.

The tube evaporator 3 includes fins and a plurality of tube bodies installed in the fins, and a plurality of U-shaped joint tubes connecting the tube bodies in series, as shown in FIG. 1, the tube bodies are three-layer hollow sleeves, the inner tube 31, the middle tube 32 and the outer tube 33 are connected through connecting pieces, the U-shaped joint tubes are hollow tubes, and the U-shaped joint tubes are welded with the outer tube.

Under the condition that the equipment is suddenly powered off or the temperature reaches a set value and stops, the refrigerant stays in the tubular evaporator 3, and the three-layer structure ensures that the cold energy storage guarantee time is longer than that of the existing structure. During normal operation, the refrigerant flows in the multilayer of the pipe body and the single-layer pipe of the U-shaped joint pipe, and the three-layer pipe also plays a role in throttling.

Example 2

As a preferable design of the tube evaporator 3 structure in example 1, the pipe diameter ratio of the inner layer pipe 31, the intermediate layer pipe 32 and the outer layer pipe 33 is 1:2:4. The connecting piece sets up at the both ends of body. The connecting piece connected among the inner layer tube, the middle layer tube and the outer layer tube is in a straight shape or a cross shape. The connecting piece welding not only needs to ensure the strength, but also can not obstruct the flow of the refrigerant, and has the best effect of selecting the straight shape in the drawing, and the connecting piece is arranged at the two ends of the pipe orifice, thereby being convenient to process and not influencing the flow of the refrigerant. The tube diameter of the three-layer tube is optimal as in this example for the tube radius. In consideration of the refrigerant evaporation refrigeration effect, the refrigerant quantity in the middle layer pipe and the inner layer pipe is controlled.

For the test of the embodiment 2, the energy-saving effect can reach 20% by adopting the single-sided air cooler with the pipe diameter; under the condition of sudden power failure of equipment, the cold energy storage guarantee time is 10% longer than that of the existing structure.

While the utility model has been described and illustrated in detail in the foregoing description with reference to specific embodiments thereof, it should be noted that various equivalent changes and modifications could be made to the above described embodiments without departing from the spirit of the utility model as defined by the appended claims.

Claims

1. A heat exchange tube structure of a cold storage air cooler is characterized in that a tube evaporator is arranged in a cold air cooler shell, two ends of the tube evaporator are respectively connected with an expansion valve and one interface of a compressor, and the heat exchange tube structure is characterized in that: the tubular evaporator comprises fins, a plurality of tube bodies arranged in the fins and a plurality of U-shaped joint tubes connected with the tube bodies in series, wherein the tube bodies are three layers of hollow sleeves, an inner layer tube, an intermediate layer tube and an outer layer tube are connected through connecting sheets, the U-shaped joint tubes are hollow tubes, and the U-shaped joint tubes are connected with the outer layer tube in a welded mode.

2. The heat exchange tube structure of a refrigerator cooler according to claim 1, wherein: the pipe diameter ratio of the inner layer pipe, the middle layer pipe and the outer layer pipe is 1:1.5-2:2.5-4.

3. The heat exchange tube structure of a refrigerator cooler according to claim 1, wherein: the connecting pieces are arranged at two ends of the pipe body.

4. A heat exchange tube structure of a refrigeration chiller according to claim 3 and characterized in that: the connecting piece connected among the inner layer tube, the middle layer tube and the outer layer tube is in a straight shape or a cross shape.