Unlock instant, AI-driven research and patent intelligence for your innovation.

Cooling unit controller

A cooling unit and control device technology, which is applied in the direction of refrigerators, refrigeration components, refrigeration and liquefaction, and can solve problems such as cost increase

Inactive Publication Date: 2004-03-10
SANYO ELECTRIC CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, as far as the DC power supply 2 is concerned, it is necessary to have a capacity capable of withstanding all the starting currents of the compressor C, the condenser fan motor CF, and the evaporator fan motors EF1 and EF2, resulting in a problem of cost increase.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cooling unit controller
  • Cooling unit controller
  • Cooling unit controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0018] figure 1 It is the control circuit diagram of the cooling unit. figure 1 The symbols in correspond to Figure 4 . A voltage is applied to the condenser fan motor CF via a chopper circuit 3 , and the applied voltage at startup is increased stepwise.

[0019] That is, if figure 2 As shown, when the cooling unit is started, the relays R1, R3, and R4 are de-energized, and the compressor and evaporator fan motors EF1, EF2 are stopped, and the clipping circuit is also turned off, and the condenser fan motor CF is also stopped. Also, the output of the terminal P5 of the microcomputer 1 is on the low (L) side, and the terminal P6 is on the off (OFF) side.

[0020] In this state, at time T1, if the terminal P4 of the microcomputer 1 outputs an ON signal, the transistor Tr1 becomes non-conductive, and the clipping circuit 3 outputs a voltage of 12V, which...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A cooling unit control device which can reduce the cost by allowing a DC power source to be small-sized while saving the energy consumption. A DC motor with high energy efficiency is used as a condenser fan motor and evaporator fan motors in a cooling unit so that the energy consumption is reduced. A chopper circuit is arranged in the power source circuit of the condenser fan motor and a voltage to be applied to the condenser fan motor is increased stepwise at the time of starting the fan motor. A time lag is set between the operation start of the condenser fan motor and that of the evaporator fan motors. Moreover, a time lag is also set among the operation start of a compressor, the condenser fan motor and the evaporator fan motors.

Description

technical field [0001] The present invention relates to a cooling unit control device for controlling a cooling unit composed of a compressor, a condenser fan motor, and an evaporator fan motor in a cooling / heating device of an automatic vending machine. Background technique [0002] image 3 It is the control circuit diagram of the existing cooling unit. exist image 3 Among them, AC is the AC power supply, C is the compressor, CF is the condenser fan motor, and EF1 and EF2 are the evaporator fan motors. This cooling unit is shown as an example for cooling the merchandise storage of the vending machine, and the evaporator fan motor EF1 and the evaporator fan motor EF2 are respectively provided in the two cooling storages. [0003] The compressor C, the condenser fan motor CF and the evaporator fan motors EF1 and EF2 are controlled on and off by the microcomputer 1 through the relays R1, R2, R3 and R4. The relays R1 and R2 for the control of the c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G07F9/10F25B49/00F25B49/02
CPCF25B49/02F25B49/00
Inventor 菊山俊哉
Owner SANYO ELECTRIC CO LTD