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Temperature control equipment of outdoor cabinet and temperature control method thereof

A temperature control method and technology of temperature control equipment, which are applied in the construction parts of electrical equipment, cooling/ventilation/heating transformation, electrical components, etc., can solve the problem that the display screen of electronic equipment cannot work normally, affect the reliability of the service life, and affect the operation Problems such as the oil return of the system, to achieve the effect of reducing the frequency of maintenance and replacement, compact structure, and reducing energy consumption

Active Publication Date: 2021-09-07
安徽中科新源半导体科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the compressor is started at a low temperature, the refrigerant dissolved in the oil will churn violently, which will easily cause a large amount of foam in the oil solution, resulting in thinning of the lubricating oil film. According to the mutual solubility characteristics of the refrigerant and the compressor oil, the composition of the two The solubility of a homogeneous solution is proportional to the temperature. When the temperature is lower than a certain critical temperature, the solution will be separated. The upper layer is mainly compressor oil, and the lower layer is mainly refrigerant. This phenomenon of different degrees of low-temperature separation not only exists The static state also exists in the running fluid state, not only in the compressor, but also in the heat exchanger and gas-liquid separator, affecting the oil return of the operating system
When the compressor works continuously, the problem of insufficient oil return can be effectively improved with the increase of the cycle period. However, when the compressor is on standby after a short period of operation, and starts and stops frequently in a short period, the internal movement mechanism and its surface are not stable. It can get enough lubrication and form an oil film thickness that can bear a certain load, which increases wear and affects its service life and operational reliability
[0006] Secondly, under extremely cold conditions, especially when the external ambient temperature is lower than -5°C, some electronic equipment inside the cabinet, such as LCD screens, cannot work normally.

Method used

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  • Temperature control equipment of outdoor cabinet and temperature control method thereof

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specific Embodiment approach

[0024] Such as figure 1 Be a kind of specific embodiment of the present invention, its structure comprises:

[0025] The semiconductor refrigeration module, the semiconductor refrigeration module includes a semiconductor chip 11, a first circulation pipeline 12 for cooling liquid, a second circulation circulation pipeline 13 for cooling fluid, and a second circuit for controlling the semiconductor chip 11 to be energized forwardly for cooling or reversely for heating or closed. A controller, the first circulation pipeline 12 is provided with the first circulation pump 14, the first heat exchanger 15 and the heat transfer end 16 in sequence, the second circulation pipeline 13 is provided with the second circulation pump 17, the second The heat exchanger 18 and the cold-conducting end 19, the heat-conducting end 16 is closely attached to the hot end surface of the semiconductor chip 11, and the cold-conducting end 19 is closely attached to the cold end surface of the semiconduct...

Embodiment 1

[0038] In this embodiment, the cabinet is in a low-temperature environment (the unsafe operating temperature of the compressor 22) as an example for illustration, that is, the selection method S1 for controlling the internal temperature of the cabinet is specifically described, wherein, t a The value is 22℃, t f The value is 25℃, t g The value is 5°C.

[0039] In method S1, when t c When ≤5°C, the first controller controls the semiconductor chip 11 to conduct reverse power heating and make the temperature inside the cabinet rise, 25°C≤t c , the first controller controls the semiconductor chip 11 to be energized and refrigerated to lower the temperature inside the cabinet, when 5°Cc When <25°C, the first controller controls the semiconductor chip 11 to be in a standby state.

[0040] In this embodiment, when the ambient temperature outside the cabinet is lower than 22°C, the external temperature environment itself is within the safe temperature range of the electronic compon...

Embodiment 2

[0046] In this embodiment, the cabinet is at a normal temperature (the safe operating temperature of the compressor 22) as an example for illustration, that is, the selection method S2 for controlling the internal temperature of the cabinet is specifically described, wherein, t a The value is 22℃, t f The value is 25℃, t j The value is 30°C,

[0047] In method S2, when 25℃≤t c ≤30°C, the first controller controls the semiconductor chip 11 to be energized for cooling and lowers the temperature inside the cabinet, and the second controller controls the compressor 22 to be in a standby state, when t c When >30°C, the first controller controls the semiconductor chip 11 to be energized to cool and reduce the temperature inside the cabinet, and the second controller synchronously controls the compressor 22 to turn on and cool the inside of the cabinet, and the compressor 22 cooperates with the semiconductor chip 11 To cool the inside of the cabinet, when t g c When <25°C, the fi...

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Abstract

The invention discloses a temperature control device of an outdoor cabinet and a temperature control method thereof. The structure of the temperature control device comprises a semiconductor refrigeration module and a compression refrigeration module. A second controller is arranged on a compressor. A first fan which blows air towards the outside air and a second fan which blows air towards the interior of the cabinet are arranged on a cabinet. An air path of the first fan passes through a condenser and a first heat exchanger at the same time; and an air path of the second fan passes through an evaporator and a second heat exchanger at the same time. A temperature monitoring module comprises an internal temperature sensor arranged in the cabinet and an external temperature sensor arranged outside the cabinet. The internal temperature sensor and the external temperature sensor are electrically connected with a first controller and the second controller respectively. Under the condition that the external environment temperature is not high, the compressor does not need to work, refrigeration of the interior of the cabinet is achieved only through a semiconductor chip, the situation that the compressor works under the condition of insufficient lubrication or local overheating is avoided, and the service life of the compressor is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of a novel air conditioner, in particular to a temperature control device for an outdoor cabinet and a temperature control method thereof. Background technique [0002] Electronic equipment cabinets, especially outdoor cabinets, in order to avoid the impact of moisture on the insulation performance of electronic equipment, usually waterproof and moisture-proof sealing design, but this sealing design is not conducive to the rapid transfer of heat generated by the electronic equipment inside the cabinet to the external environment. [0003] In the high temperature environment in summer, the heat generated by the outdoor cabinet absorbing solar radiation and the heat generated by the high-density electronic equipment inside the cabinet cannot be effectively transferred to the external environment, causing the internal temperature of the cabinet to rise sharply, and even exceed the rated operating temperature of ...

Claims

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Application Information

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IPC IPC(8): H05K7/20
CPCH05K7/20827H05K7/20836
Inventor 熊绎张安邦汪玉成刘峻
Owner 安徽中科新源半导体科技有限公司