CN103791683A - Liquid nitrogen control system of food freezer - Google Patents

Liquid nitrogen control system of food freezer Download PDF

Info

Publication number
CN103791683A
CN103791683A CN201210433573.4A CN201210433573A CN103791683A CN 103791683 A CN103791683 A CN 103791683A CN 201210433573 A CN201210433573 A CN 201210433573A CN 103791683 A CN103791683 A CN 103791683A
Authority
CN
China
Prior art keywords
liquid nitrogen
mcu
output
control system
valve switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201210433573.4A
Other languages
Chinese (zh)
Inventor
田边
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Jiaotong University Jingsheng Technology Development Co Ltd
Original Assignee
Xian Jiaotong University Jingsheng Technology Development Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xian Jiaotong University Jingsheng Technology Development Co Ltd filed Critical Xian Jiaotong University Jingsheng Technology Development Co Ltd
Priority to CN201210433573.4A priority Critical patent/CN103791683A/en
Publication of CN103791683A publication Critical patent/CN103791683A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

Disclosed is a liquid nitrogen control system of a food freezer. A temperature sensor is arranged in a liquid nitrogen container, the output of the temperature sensor is connected with an MCU (micro control unit), an output control signal of the MCU is connected with a relay controlling an electronic valve switch, the electronic valve switch controls a motor to perform heating or cooling, and the MCU is connected with a display module and a warning module. The liquid nitrogen control system is characterized by further comprising a liquid level sensor with the output connected with the MCU. Liquid nitrogen capacity in the container can be monitored in real time while temperature control is performed, and a warning can be given out.

Description

The liquid nitrogen control system of foodstuffs refrigerator
Technical field
The present invention relates to refrigeration technology field, particularly a kind of liquid nitrogen control system of foodstuffs refrigerator.
Background technology
At present very ripe to the cold storing and fresh-keeping technology of food, wherein utilize liquid nitrogen refrigerating can reach subzero 50 degree, and liquid nitrogen is nontoxic, originates wider, mechanical refrigeration relatively, cost is lower, has obtained more application.But, in liquid nitrogen refrigerating process, owing to lowering the temperature sharply, therefore need refrigerated storage temperature strictly to control, in order to avoid excessively cooling, and due to when refrigeration liquid nitrogen amount ratio larger, so also will strictly control the consumption of liquid nitrogen, cause refrigerating capacity deficiency in order to avoid amount of liquid nitrogen is not enough.In existing technology, mostly be to pay close attention to temperature, and ignore the control of amount of liquid nitrogen, because liquid nitrogen container seals completely, in refrigerating environment, cannot obtain its surplus, can only be that this mode has very large hysteresis quality according to keeping the situation of low temperature to judge whether to also have enough liquid nitrogen, give the food refrigerated inconvenience that brought.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of liquid nitrogen control system of foodstuffs refrigerator.
To achieve these goals, the technical solution used in the present invention is:
A kind of liquid nitrogen control system of foodstuffs refrigerator, set temperature sensor in liquid nitrogen container, the output of temperature sensor meets MCU, MCU output control signal connects the relay of controlling electronic valve switch, electronic valve switch control motor heats up or lowers the temperature, and described MCU is connected to display module and alarm module, it is characterized in that, also comprise liquid level sensor, the output of liquid level sensor meets MCU.
Compared with prior art, the present invention can carry out the temperature controlled while, liquid nitrogen capacity in real time monitoring container, and send alarm prompt.
Accompanying drawing explanation
Accompanying drawing is structural representation of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is carried out to more detailed explanation.
As shown in the figure, the present invention is a kind of liquid nitrogen control system of foodstuffs refrigerator, set temperature sensor in liquid nitrogen container, the output of temperature sensor meets MCU, and MCU output control signal connects the relay of controlling electronic valve switch, and electronic valve switch control motor heats up or lowers the temperature, described MCU is connected to display module and alarm module, it is characterized in that, also comprise liquid level sensor, the output of liquid level sensor meets MCU.
The present invention utilizes liquid level sensor, when liquid level is lower than setting value time, will send alarm, and prompting liquid nitrogen deficiency, reminds staff to change liquid nitrogen container, or add nitrogen.

Claims (1)

1. the liquid nitrogen control system of a foodstuffs refrigerator, set temperature sensor in liquid nitrogen container, the output of temperature sensor meets MCU, MCU output control signal connects the relay of controlling electronic valve switch, electronic valve switch control motor heats up or lowers the temperature, and described MCU is connected to display module and alarm module, it is characterized in that, also comprise liquid level sensor, the output of liquid level sensor meets MCU.
CN201210433573.4A 2012-11-02 2012-11-02 Liquid nitrogen control system of food freezer Pending CN103791683A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210433573.4A CN103791683A (en) 2012-11-02 2012-11-02 Liquid nitrogen control system of food freezer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210433573.4A CN103791683A (en) 2012-11-02 2012-11-02 Liquid nitrogen control system of food freezer

Publications (1)

Publication Number Publication Date
CN103791683A true CN103791683A (en) 2014-05-14

Family

ID=50667582

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210433573.4A Pending CN103791683A (en) 2012-11-02 2012-11-02 Liquid nitrogen control system of food freezer

Country Status (1)

Country Link
CN (1) CN103791683A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104197574A (en) * 2014-08-27 2014-12-10 严佳乐 Frozen dessert refrigerating device and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104197574A (en) * 2014-08-27 2014-12-10 严佳乐 Frozen dessert refrigerating device and method
CN104197574B (en) * 2014-08-27 2016-08-31 严佳乐 The refrigeration plant of frozen dessert and method

Similar Documents

Publication Publication Date Title
CN201917169U (en) Refrigerator capable of monitoring freshness preservation degree of food
CN102435042B (en) Control method of draught fan of refrigerator compartment
CN202393167U (en) Three-door refrigerator
CN105492844B (en) Power consumption output device
CN203024533U (en) Networking refrigerator with function for remotely controlling thawing and identifying freshness of food
CN201392070Y (en) Intelligent full-automatic cold-hot dual purpose heat insulation cabinet
EP2743622A3 (en) Refrigerator
CN102506557B (en) Refrigeration equipment and switching unit control method in defrosting process of refrigeration equipment
WO2009128647A3 (en) Ice-full state detecting apparatus and refrigerator having the same
WO2015025236A1 (en) Refrigerator and control method therefor
CN103017479B (en) Water dispenser and refrigerating plant thereof
CN103388955B (en) Refrigerator and control method thereof
CN202993746U (en) Water dispenser and refrigeration apparatus thereof
CN103363759B (en) Refrigerator defrosting method and system
CN103791683A (en) Liquid nitrogen control system of food freezer
EP2738484A3 (en) Refrigerator with thermoelectric device control process for an icemaker
CN108981267B (en) Fresh-keeping refrigerator and control method thereof
CN103438631B (en) There is the refrigeration plant of the frequency conversion type of low startup noise
CN209042851U (en) A kind of freeze preservation refrigerator
JP5747144B2 (en) refrigerator
CN104329903A (en) Single system refrigerator
CN204478695U (en) For refrigeration plant wine frame and there is its refrigerator
CN107894129A (en) A kind of commercial refrigerator intelligence control system
CN113280564A (en) Intelligent control ware based on commercial freezer
CN204006952U (en) Single system refrigerator

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20140514