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Patent Searching and Data


Title:
EXPANSION VALVE CONTROL SENSOR, AND REFRIGERATION SYSTEM EMPLOYING SAME
Document Type and Number:
WIPO Patent Application WO/2019/111771
Kind Code:
A1
Abstract:
An expansion valve control sensor according to the present invention comprises a micro-resistor, an upstream temperature sensor which detects a pipeline temperature on an upstream side of the micro-resistor, and a downstream temperature sensor which detects a pipeline temperature on a downstream side of the micro-resistor. The expansion valve control sensor detects a temperature difference between the upstream temperature sensor and the downstream temperature sensor. A change of state in the flow rate or dryness, for example, of a refrigerant passing by the micro-resistor can thus be detected in a relative manner, and refrigeration system energy savings can be achieved.

Inventors:
SAKAI Hisakazu
HORIO Yoshimasa
Application Number:
JP2018/043672
Publication Date:
June 13, 2019
Filing Date:
November 28, 2018
Export Citation:
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Assignee:
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. (1-61, Shiromi 2-chome Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
International Classes:
F25B1/00; F25B41/06; F25B49/02
Attorney, Agent or Firm:
KAMATA Kenji et al. (1-61, Shiromi 2-chome, Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
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