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Refrigeration cycle device

A circulation device and control circuit technology, applied to output power conversion devices, refrigerators, refrigeration components, etc.

Inactive Publication Date: 2018-03-06
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In refrigeration cycle devices powered by solar cells, expensive batteries are required to maintain cooling capacity day and night

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0018] figure 1 It is a block diagram of the refrigeration cycle apparatus 100 of Embodiment 1.

[0019] The refrigeration cycle apparatus 100 includes a power supply unit 2 and a refrigeration stocker 3 . The power supply device 2 converts the DC power of the solar cell (solar panel) 1 into AC power, and supplies it to the compressor 31 included in the freezer stocker 3 . The compressor 31 cools the cooling agent 32 stored in the freezing stocker 3 and freezes it, thereby cooling the interior of the freezing stocker 3 . At night when the solar battery 1 cannot generate direct current power, the cooling state inside the room of the frozen stocker 3 is maintained by the frozen cooling agent 32 .

[0020] The solar cell 1 has a rated output capability of 24V as an example.

[0021] The power supply device 2 has a DC / DC converter (DC / DC converter) 21 , an inverter 22 and a control circuit 23 . The DC / DC converter 21 boosts the voltage Vo generated by the solar cell to generat...

Embodiment approach 2

[0065] Figure 5 It is a block diagram of the refrigeration cycle apparatus 101 of Embodiment 2.

[0066] exist Figure 5 , marked with and figure 1 Components with the same reference numerals have the same structure, and the above-mentioned repeated descriptions are omitted.

[0067] Refrigeration cycle unit 101 is in figure 1 In the shown refrigeration cycle apparatus 100, an AC adapter (AC / DC conversion adapter) 4, a protection diode D51, and a protection diode D52 are added. The AC adapter 4 is an auxiliary power supply that converts household AC power supplied through the plug 6 into a DC voltage set to a desired voltage value, and outputs it. The AC adapter 4 supplies a DC voltage to the power supply unit 2 instead of the solar cell 1 when rain continues.

[0068]The DC / DC converter 21 has a power detection unit not shown. When the power detection unit detects that the power generation voltage Vo of the solar cell 1 is lower than the power switching determination v...

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PUM

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Abstract

An expensive storage battery is necessary in order to maintain cooling capacity day and night in a refrigeration cycle device that employs a solar battery as a power source. This refrigeration cycle device (100) comprises: a power source circuit unit (2) that boosts the voltage (Vo) generated by a solar battery (1), and that generates an alternating voltage (Vac) having a predetermined frequency; and a refrigeration stocker (3) in which the internal temperature is controlled by a compressor (31). The power source circuit unit controls the frequency of the alternating voltage to be supplied to a motor (M) of the compressor so as to maintain the voltage (Vo) generated by the solar battery at an input voltage setting value.

Description

technical field [0001] The present invention relates to a refrigerating cycle device using a refrigerating cycle, and more particularly to a refrigerating cycle device supplied with electric power generated by a solar cell. Background technique [0002] In areas with no power supply or unstable power supply, solar cells and storage batteries are used as power sources for refrigeration cycle devices such as freezers that utilize the refrigeration cycle. During the day, the DC power generated by the solar cell is stored in the battery, and at night, the compressor is operated with the power from the battery, so that the freezer can be kept cold day and night. However, expensive storage batteries are an obstacle to popularization of such refrigeration cycle devices. [0003] Japanese Patent Laid-Open Publication No. 2010-133427 (Patent Document 1) discloses a thermoelectric supply system that can be driven according to changes in power demand and heat demand, and can generate ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/28
CPCF24F5/0046F24F2005/0064F25B49/025F25B2600/021H02M7/4807Y02B30/70Y02E10/56
Inventor 村上治彦
Owner SHARP KK