Cooler capable of changing tube number, tube spacing and fin spacing and allowing air to enter and exit from same side

Abstract

A cooler with variable tube number, variable tube spacing and variable fin spacing and air entering and exiting from the same side is characterized in that a finned tube area of the cooler is divided into at least two areas in the vertical direction, the tube diameter of a heat exchange tube is changed from large to small, the adjacent tube spacing is also changed from large to small, and the fin spacing is also changed from large to small from top to bottom; the number of the heat exchange pipes arranged in the air flowing direction changes from large to small. In the air flowing direction, the fins are divided into at least two areas in the front-back direction, and the distance between the fins changes from large to small. The cooler with the air entering and exiting from the same side is high in heat exchange efficiency, even in frosting, variable in pipe number, variable in pipe distance and variable in fin distance, optimizes pipeline arrangement, is matched with a flow field of an air cooler, reduces unnecessary pipeline waste, or has higher energy efficiency under the same material consumption.

Description

Technical Field

[0001] The utility model belongs to an air cooler, in particular to a cooling heat exchanger with air entering and exiting from the same side. Background Art

[0002] The existing quick-freezing cold storage can be as low as -35℃, which is mainly used for low-temperature quick freezing of food, medicine, medicinal materials, chemical raw materials and other items. Food and materials can pass through the maximum ice crystal zone (-1~-5℃) in a very short time, so as to avoid the formation of large ice crystals between cells, reduce the externalization of water in cells, significantly shorten the time for concentrated solutes, food tissues, colloids and various components in the cell tissue to contact each other, and maximize the original nutritional value and color, aroma and taste of food, greatly improving the quality of frozen products. With the improvement of my country's economic level, the application of quick-freezing storage has become more and more extensive and important. However, the temperature of quick-freezing storage is low, the load is large, and the frosting problem is particularly prominent. In addition, the existing cold air blower flow field in and out of the quick-freezing storage on the same side is uneven, the upper air duct is short, the flow rate is fast, and the flow rate is large, while the lower part is the opposite. The pipe diameter, pipe spacing, and sheet spacing are arranged according to the same size of the upper and lower parts, resulting in insufficient heat exchange area in the upper part and insufficient heat exchange in the lower part, low overall heat exchange efficiency, uneven frosting and other prominent problems, which need to be optimized urgently. Summary of the invention

[0003] In order to overcome the shortcomings of existing coolers such as low heat exchange efficiency, waste of heat exchange pipelines, and uneven frosting, the utility model provides a cooler with higher heat exchange efficiency, more uniform frosting, and variable number of tubes, variable tube spacing, and variable wing spacing, with air entering and exiting on the same side. The pipeline layout is optimized, well matched to the flow field of the air cooler, and unnecessary pipeline waste is reduced, or in other words, with the same material consumption, it has higher energy efficiency.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A cooler with variable tube number, variable tube spacing and variable fin spacing, with air entering and exiting from the same side.

[0006] The cooler fin tube area is divided into at least two areas in the vertical direction. From top to bottom, the diameter of the heat exchange tube changes from large to small, the adjacent tube distance also changes from large to small, the fin spacing also changes from large to small, and the number of heat exchange tubes arranged along the air flow direction changes from large to small; along the air flow direction, the front and back are divided into at least two areas, and the fin spacing changes from large to small.

[0007] Furthermore, the cooler finned tube area is divided into three areas: upper, middle and lower in the vertical direction. The upper area adopts large-diameter heat exchange tubes, and the tube diameter range is 12 to 16 mm; a large tube spacing is adopted, and the available tube spacing range is 35 to 50 mm; a large fin spacing is adopted, and the available fin spacing range is 12 to 18 mm; a large number of heat exchange tubes are arranged along the air flow direction, and the number of available heat exchange tube rows is 9 to 16 rows; the middle area adopts medium-diameter heat exchange tubes, and the available tube diameter range is 10 to 14 mm; a medium tube spacing is adopted, The available tube spacing range is 24-40mm; the available fin spacing range is 6-14mm with medium fin spacing; a medium number of heat exchange tubes are arranged along the air flow direction, and the available number of heat exchange tube rows is 6-12 rows; small diameter heat exchange tubes are used in the lower area, and the available tube diameter range is 7 to 12mm; small tube spacing is used, and the available tube spacing range is 18-30mm; small fin spacing is used, and the available fin spacing range is 4-10mm; a small number of heat exchange tubes are arranged along the air flow direction, and the available number of heat exchange tube rows is 2-8 rows. This is a preferred implementation. Of course, there can also be 2 areas, 4 areas or more areas.

[0008] Furthermore, along with the air flow direction, the front and back are divided into three areas, namely the front area, the middle area and the rear area, the fin spacing in the middle area is 60-80% of the fin spacing in the front area, and the fin spacing in the rear area is 40-60% of the fin spacing in the front area. This is a preferred implementation scheme. Of course, there can also be 2 areas, 4 areas or more areas.

[0009] The beneficial effects of the utility model are mainly manifested in: optimizing the pipeline layout, matching the flow field of the air cooler, reducing unnecessary pipeline waste, or in other words, having higher energy efficiency under the same material consumption; higher heat exchange efficiency and more uniform frosting. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of a cooler with variable tube number, variable tube spacing and variable fin spacing, with air entering and exiting on the same side.

[0011] Figure 2 yes Figure 1 Side view of.

[0012] Figure 3 yes Figure 1 The CC section diagram, i.e. the vertical cross-section diagram of the cooler, is Figure 2 Detailed view of the area indicated by the dotted line.

[0013] Figure 4 yes Figure 1 Side view of the internal structure.

[0014] Figure 5 yes Figure 4 A-A cross-sectional view, where 1 is the fin.

[0015] Figure 6 yes Figure 4 B-B cross-sectional view, where 1 is the fin. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings.

[0017] Reference Figure 1 to Figure 6 A cooler with variable tube number, variable tube spacing and variable fin spacing, with air entering and exiting from the same side. The fin tube area of ​​the cooler is divided into at least two areas in the vertical direction. From top to bottom, the tube diameter of the heat exchange tube changes from large to small, the adjacent tube spacing also changes from large to small, the fin spacing also changes from large to small, and the number of heat exchange tubes arranged along the air flow direction changes from large to small; along the air flow direction, the front and back are divided into at least two areas, and the fin spacing changes from large to small.

[0018] Furthermore, the finned tube area of ​​the cooler is divided into three areas in the vertical direction: upper, middle and lower. The upper area adopts large-diameter heat exchange tubes, and the available diameter range is 12 to 16 mm; a large tube spacing is adopted, and the available tube spacing range is 35 to 50 mm; a large fin spacing is adopted, and the available fin spacing range is 12 to 18 mm; a large number of heat exchange tubes are arranged along the air flow direction, and the available number of heat exchange tube rows is 9 to 16 rows. The middle area adopts medium-diameter heat exchange tubes, and the available diameter range is 10 to 14 mm; a medium tube spacing is adopted, and the available tube spacing range is 24 to 40 mm; a medium fin spacing is adopted, and the available fin spacing range is 6 to 14 mm; a medium number of heat exchange tubes are arranged along the air flow direction, and the available number of heat exchange tube rows is 6 to 12 rows. The lower area uses small diameter heat exchange tubes, and the available tube diameter range is 7 to 12mm; a small tube spacing is used, and the available tube spacing range is 18 to 30mm; a small fin spacing is used, and the available fin spacing range is 4 to 10mm; a small number of heat exchange tubes are arranged along the air flow direction, and the available number of heat exchange tube rows is 2 to 8 rows.

[0019] As the air flows in the direction, it is also divided into three areas, and the fin spacing gradually decreases. The front area adopts the fin spacing mentioned above, the fin spacing in the middle area is 60-80% (rounded) of the fin spacing in the front area, and the fin spacing in the rear area is 40-60% (rounded) of the fin spacing in the front area.

[0020] Among the four parameters of the heat exchange tube diameter, heat exchange tube spacing, fin spacing, and number of heat exchange tube rows in the upper, middle, and lower areas divided above, only one or more of the parameters may be changed, and not all of them must be changed at the same time. However, the changing trends of the parameters along the upper, middle, and lower areas must be consistent with those described above.

[0021] The upper, middle, lower areas and the front, middle, and back areas mentioned above do not necessarily have to be three areas, but may also be two areas or four areas, etc., but the changing trends of the parameters involved remain unchanged.

[0022] Example: The finned tube area of ​​the air cooler is divided into three areas in the vertical direction: upper, middle and lower. The upper area uses large-diameter heat exchange tubes with a tube diameter of 14mm; a large tube spacing of 50mm; a large fin spacing of 16mm; and a large number of 8 rows of heat exchange tubes are arranged along the air flow direction. The middle area uses medium-diameter heat exchange tubes with a tube diameter of 12mm; a medium tube spacing of 35mm; a medium fin spacing of 14mm; and a medium number of 6 rows of heat exchange tubes are arranged along the air flow direction. The lower area uses small-diameter heat exchange tubes with a tube diameter of 10mm; a small tube spacing of 25mm; a small fin spacing of 10mm; and a small number of 4 rows of heat exchange tubes are arranged along the air flow direction.

[0023] As the air flows in the direction, it is also divided into three areas, and the sheet spacing gradually decreases. The sheet spacing in the front area adopts the sheet spacing mentioned above, the sheet spacing in the middle area is 75% (rounded) of the sheet spacing in the front area, and the sheet spacing in the rear area is 50% (rounded) of the sheet spacing in the front area.

[0024] The contents described in the embodiments of this specification are merely enumerations of implementation forms of the utility model concept and are for illustrative purposes only. The protection scope of the utility model should not be considered to be limited to the specific forms described in this embodiment, and the protection scope of the utility model also extends to equivalent technical means that ordinary technicians in this field can think of based on the concept of the utility model.

Claims

1. A cooler with variable tube number, variable tube spacing and variable fin spacing, with air entering and exiting from the same side, characterized in that: The cooler fin tube area is divided into at least two areas in the vertical direction. From top to bottom, the diameter of the heat exchange tube changes from large to small, the adjacent tube distance also changes from large to small, the fin spacing also changes from large to small, and the number of heat exchange tubes arranged along the air flow direction changes from large to small; along the air flow direction, the front and back are divided into at least two areas, and the fin spacing changes from large to small.

2. The cooler with variable tube number, variable tube spacing and variable fin spacing and air entering and exiting from the same side as claimed in claim 1, characterized in that: The finned tube area of ​​the cooler is divided into three areas: upper, middle and lower in the vertical direction. The upper area adopts large-diameter heat exchange tubes, and the diameter range is 12 to 16 mm; a large tube spacing is adopted, and the available tube spacing range is 35 to 50 mm; a large fin spacing is adopted, and the available fin spacing range is 12 to 18 mm; a large number of heat exchange tubes are arranged along the air flow direction, and the number of rows of heat exchange tubes available is 9 to 16 rows; the middle area adopts medium-diameter heat exchange tubes, and the diameter range is 10 to 14 mm; the medium tube spacing is adopted, and the available The tube spacing range is 24 to 40 mm; with medium fin spacing, the available fin spacing range is 6 to 14 mm; a medium number of heat exchange tubes are arranged along the air flow direction, and the available number of heat exchange tube rows is 6 to 12 rows; small diameter heat exchange tubes are used in the lower area, and the available tube diameter range is 7 to 12 mm; with small tube spacing, the available tube spacing range is 18 to 30 mm; with small fin spacing, the available fin spacing range is 4 to 10 mm; a small number of heat exchange tubes are arranged along the air flow direction, and the available number of heat exchange tube rows is 2 to 8 rows.

3. The cooler with variable tube number, variable tube spacing and variable fin spacing and air entering and exiting from the same side as claimed in claim 1 or 2, characterized in that: Along the air flow direction, the front and back are divided into three areas, namely the front area, the middle area and the rear area. The fin spacing in the middle area is 60-80% of the fin spacing in the front area, and the fin spacing in the rear area is 40-60% of the fin spacing in the front area.

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