Title:
ショーケースの除霜制御方法
Document Type and Number:
Japanese Patent JP7007153
Kind Code:
B2
Abstract:
To provide a defrosting control method for a show case that quickly defrosts an evaporator when necessary to prevent quality reduction of an article displayed in the case and enable elimination of wasteful power consumption caused by unnecessary defrosting.SOLUTION: A frost defrosting method for a show case includes: a step of calculating a frost formation amount of frost formed on an evaporator as a positive value using the product of a temperature adjustment ON time of a show case and a coefficient Kon varying depending on an environment around the show case; a step of calculating a frost melting amount of frost melted from the evaporator as a negative value using the product of a temperature adjustment OFF time of the show case and a coefficient Koff varying depending on the environment around the show case; a step of calculating an evaporator frost formation amount of frost formed on the evaporator by integrating the frost formation amount and the frost melting amount; a step of comparing the evaporator frost formation amount with a limit frost formation amount prescribed for ambient environment as the upper limit of a frost formation amount that can be defrosted; and a step of performing defrosting when the evaporator frost formation amount exceeds the limit frost formation amount.SELECTED DRAWING: Figure 2
Inventors:
Kenichi Shinozuka
Hideki Hanamura
Kengo Kashiwagi
Hideki Hanamura
Kengo Kashiwagi
Application Number:
JP2017204274A
Publication Date:
January 24, 2022
Filing Date:
October 23, 2017
Export Citation:
Assignee:
Nakano Cold Machinery Co., Ltd.
International Classes:
F25D21/06; A47F3/04; F25D11/00; F25D21/02; F25D21/08
Domestic Patent References:
| JP5118732A | ||||
| JP57019578A | ||||
| JP59108178U | ||||
| JP5288454A | ||||
| JP59133983U | ||||
| JP11063744A | ||||
| JP2015148351A | ||||
| JP60167989U | ||||
| JP54157360A |
Foreign References:
| US20130081416 |
Attorney, Agent or Firm:
Shinichi Ogawa
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