Energy-conserving control device for food fresh keeping cabinet

A technology for energy-saving control and food preservation, applied in household refrigeration devices, electrical program control, program control in sequence/logic controllers, etc., can solve the problems of temperature rise, energy waste, and high power consumption of food preservation cabinets

Inactive Publication Date: 2009-03-18
彦旸科技股份有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] However, since the power consumption of food preservation cabinets is higher than that of general electrical appliances, in the current situation of power shortage, effective energy-saving methods should be sought. Therefore, the inventors found that when the defogging heaters of food preservation cabinets are in operation, the heat energy generated by them will be eliminated. In addition to increasing the temperature of the transparent glass, it will also increase the temperature in the cabinet, so that the compressor must continue to run in response to the temperature increase, resulting in unnecessary waste of energy

Method used

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  • Energy-conserving control device for food fresh keeping cabinet
  • Energy-conserving control device for food fresh keeping cabinet
  • Energy-conserving control device for food fresh keeping cabinet

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no. 1 example

[0043] And the first embodiment of the present invention comprises:

[0044] A temperature and humidity sensor (42) outside the cabinet is located outside the cabinet (11) of the refrigerator (10) to measure the temperature and humidity outside the cabinet;

[0045] A main controller (43), is located on the cabinet body (11) of this refrigerated cabinet (10), and connects this cabinet external temperature and humidity sensor (42) and this defogging heater (17), and this main controller (43) Memory has a dew point formula, a demist database, a preset dew point temperature calculation interval and a demist energy saving control program, wherein the dew point formula is

[0046] Dp=((0.6677-logEW)×237.3) / (logEW-8.16077),

[0047] logEW=0.66077+(7.5×temperature / (237.3+temperature))+log 10 (humidity)-2, for this main controller (43) calculates a dew point temperature by this cabinet external temperature and humidity, see also shown in Fig. 3, this defogging data storehouse has mu...

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Abstract

The invention relates to an energy-saving control device of a food preservation cabinet, which comprises a main controller and a cabinet-exterior temperature humidity sensor connected to the main controller, wherein the main connecter is further connected with a demisting heater inside the food preservation cabinet, and a dew-point formula and a demisting database containing multiple groups of dew-point temperature standard data and corresponding demisting heating time data thereof are stored in the main controller, thereby calculating the dew-point temperature through the cabinet-exterior temperature humidity sensor and the dew-point formula, further figuring out demisting heating time corresponding to the dew-point temperature, and finally operating the demisting heater accordingly. Therefore, the demisting heater can not be operated lastly, and can further be operated for a compressor which reduces the heat generated by the demisting heater, thereby achieving the efficacy of saving energy.

Description

technical field [0001] The invention relates to an energy-saving control device for a food fresh-keeping cabinet, especially an energy-saving control device that can effectively save electric energy consumed by food fresh-keeping cabinets such as open cabinets, refrigerators and freezers. Background technique [0002] Nowadays, general food sales places, such as supermarkets and convenience stores, are equipped with food preservation cabinets such as open cabinets, refrigerators and freezers. These food preservation cabinets can be divided into one cabinet and one compressor, or multiple cabinets share one compressor. These food preservation cabinets have the function of food preservation, so there are a uniform cooling fan, a condenser, an air inlet valve, a temperature sensor and a control unit in the cabinet, and the compressor and the air inlet The valve is controlled by the control unit, and the temperature sensor is used to obtain the temperature in the cabinet and sen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04F25D29/00
Inventor 朱光华
Owner 彦旸科技股份有限公司
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