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Refrigeration equipment and control method of air-cooled refrigeration workbench

A refrigeration equipment and air-cooled technology, which is used in the temperature stability control of air-cooled refrigeration workbenches, and the field of refrigeration equipment, can solve the problems of insufficient heat insulation, low temperature storage box temperature rise, leakage, etc., and achieve universal equipment. Strong performance, fast defrosting speed and high efficiency

Active Publication Date: 2020-11-03
HENAN AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the defrosting process, the refrigeration equipment needs to be shut down, which causes the cooling capacity in the supporting low-temperature storage box to "leak" to the refrigeration equipment, causing the temperature of the low-temperature storage box to rise
In this regard, the prior art (CN205332642U) relates to a low-temperature defrosting structure of a surface-cooled evaporator in a -60°C cold storage, which teaches that the air inlet and outlet are reversibly closed by shutters during defrosting, but the evaporator should be installed with ample volume In the low-temperature cold storage, the air inlet and outlet are located on the opposite side of the evaporator, while the refrigeration equipment of the air-cooled refrigeration workbench requires a compact structure (the equipment installation space is limited), and the air inlet and outlet are located on the same side of the refrigeration equipment; in addition, the existing technology adopts It is a defrosting spray device, and no extra heat is generated during the defrosting process, so the shutters can be used to achieve effective heat insulation. hot sex is not enough

Method used

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  • Refrigeration equipment and control method of air-cooled refrigeration workbench
  • Refrigeration equipment and control method of air-cooled refrigeration workbench
  • Refrigeration equipment and control method of air-cooled refrigeration workbench

Examples

Experimental program
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Effect test

Embodiment 1

[0033] figure 1 A schematic diagram of a commercially available air-cooled freezing workbench is shown, in which the left side is the low-temperature storage box A, and the right side is the refrigeration equipment B. The improved refrigerating equipment B proposed by the present invention has a side view of the low-temperature storage box A refrigerating equipment B as figure 2 As shown, the low-temperature storage box A is shown opposite to the refrigeration equipment B, that is, the ventilation side panel 1-1. In general, the refrigeration equipment B of this embodiment includes an equipment box 1 and a refrigeration unit. The equipment box 1 has a ventilation side panel 1-1, and the ventilation side panel 1-1 is provided with an air inlet 2 and an air outlet 3 for refrigeration. The unit includes a compressor, an evaporator 4 and a defrosting heating device 5 installed on the evaporator 4 . A plurality of movable thermal insulation panels 6 are installed on the ventilat...

Embodiment 2

[0037] On the basis of Example 1, in order to further prevent the heat of the refrigeration equipment B from leaking to the low-temperature storage box A during defrosting, the inside and / or outside of the ventilation side panel 1-1 are covered with thermal insulation materials 1-2 . As a preferred solution, considering factors such as service life, movable thermal insulation board 6 easy installation, such as image 3 As shown, the thermal insulation material 1-2 is preferably laid on the inner side of the ventilation side panel 1-1. The thickness of the thermal insulation material 1-2 is 5-35mm, preferably 8-20mm. After many experiments, a variety of thermal insulation materials within this thickness range can have greater thermal insulation capabilities, avoiding the waste of materials caused by over-thick paving and the compression of refrigeration unit space. As a specific product, for example, a 10 mm thick EPS foam board can be used.

Embodiment 3

[0039] This embodiment shows an air-cooled freezing workbench using the refrigeration equipment B of the foregoing Embodiment 1 and / or 2. In this embodiment, the low-temperature storage box A and the refrigeration equipment B are arranged side by side, the ventilation side plate 1-1 of the refrigeration equipment B faces the low-temperature storage box A, and the air inlet 2 and the air outlet 3 communicate with the low-temperature storage box A. Such placement is the same as that of corresponding equipment in the prior art, such as figure 1 shown. That is to say, the refrigerating device B of the present invention can be used in conjunction with the commercially available low-temperature storage box A, and has extremely high flexibility and convenience.

[0040] In a more specific situation, the low-temperature storage box A is not provided with a vertical panel corresponding to the refrigeration equipment B, that is, the low-temperature storage box A is an incompletely clos...

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Abstract

The invention belongs to the field of cryogenic equipment and specifically relates to an air-cooled refrigeration workbench refrigerating device. The air-cooled refrigeration workbench refrigerating device comprises a plurality of movable heat insulation plates and a driving device in force transmission connection with the movable heat insulation plates. The movable heat insulation plates are driven by the driving device to reversibly close an air inlet and an air outlet. The air-cooled refrigeration workbench refrigerating device provided by the invention is small in size, convenient to install, capable of being matched with various types of air-cooled refrigeration workbench low-temperature storage cabinets for use and high in universality. The air-cooled refrigeration workbench refrigerating device adopts electric heating defrosting, is high in defrosting speed and efficiency, effectively prevents cold energy dissipation of a low-temperature storage cabinet through the special design of the movable heat insulation plates and a heat insulation material and saves energy. The invention further provides a control method for supporting the use of the air-cooled refrigeration workbench refrigerating device. Accordingly, the advantages of energy saving and high efficiency of the air-cooled refrigeration workbench refrigerating device are given full play to.

Description

technical field [0001] The invention belongs to the field of cryogenic equipment, and in particular relates to an air-cooled refrigerated workbench, refrigeration equipment used for the air-cooled refrigerated workbench, and further relates to a temperature stabilization control method for the air-cooled refrigerated workbench. Background technique [0002] Freezing benches have become widely used low-temperature equipment in scientific research laboratories and commercial catering. According to different cooling methods, there are two types of freezing benches: direct cooling and air cooling. The direct-cooling freezer has a large box, poor cooling effect and easy frosting in the low-temperature storage box, so the air-cooled freezer is gradually popularized. [0003] The air-cooled freezer generally includes a low-temperature storage box and refrigeration equipment. Refrigeration equipment includes refrigeration equipment cabinets and refrigeration units, and refrigerati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25D17/04F25D23/06F25D29/00F25D21/08
CPCF25D17/045F25D21/08F25D23/066F25D29/00F25D2201/12F25D2700/12
Inventor 艾志录贺宇舵李慧品邢小龙
Owner HENAN AGRICULTURAL UNIVERSITY
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