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Fuzzy control method of constant-temperature chamber

A technology of fuzzy control and constant temperature, which is used in household refrigeration devices, lighting and heating equipment, cooling fluid circulation devices, etc. It can solve the problems of slow response speed of temperature adjustment and inability to quickly reach constant temperature, shortening time and improving response speed. and the effect of accuracy

Active Publication Date: 2020-10-02
CHANGHONG MEILING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a fuzzy control method for a constant temperature compartment, by detecting the variation of the temperature in the constant temperature compartment, quickly judge the temperature type of the item put in, and improve the response speed of the temperature control and adjustment of the constant temperature compartment; solve the problem There is a problem that the temperature adjustment response speed of the constant temperature room is slow, and the constant temperature cannot be reached quickly

Method used

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  • Fuzzy control method of constant-temperature chamber
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Embodiment 1

[0034] see figure 1 Shown, the present invention is a kind of fuzzy control method of constant temperature compartment, comprises the following steps:

[0035] Step 1: When the system recognizes that the refrigerator door is open, record the temperature T0 of the constant temperature compartment when the refrigerator door is opened, and close the damper of the constant temperature compartment; the temperature of the constant temperature compartment is detected by the temperature sensor installed in the constant temperature compartment. If the damper of the thermostatic compartment is already in the closed state, it will remain in the closed state.

[0036] Wherein, if the constant temperature compartment is provided with a separate door switch sensor, the door switch sensor of the constant temperature compartment can be used instead of the refrigerator door switch sensor. More precise control can be realized, avoiding the situation that the user only opens the refrigerator do...

Embodiment 2

[0052] Step 1: When the user opens the refrigerator door, the system records the current sensor temperature T0 of the thermostatic compartment, for example, T0 is -3°C; close the damper of the thermostatic compartment.

[0053] At this time, the user puts 1 kg of fresh meat at room temperature in the constant temperature chamber.

[0054] Step 2: After the user closes the refrigerator door, the system turns on the refrigeration fan and the damper of the constant temperature compartment to cool the constant temperature compartment.

[0055] Due to the fresh meat at room temperature, the temperature in the constant temperature room rises. If the temperature detected by the sensor of the constant temperature room does not drop to T0=-3°C, and the cooling of the constant temperature room has reached the 2 minutes set by time1; then At this time, close the damper and refrigeration fan of the constant temperature compartment, stop cooling the constant temperature compartment, and re...

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Abstract

The invention discloses a fuzzy control method for a constant-temperature chamber, and relates to the technical field of refrigerators. The method comprises the steps of 1, recording the temperature T0 of a constant-temperature chamber when a refrigeration door is opened; 2, refrigerating the constant-temperature chamber when the refrigeration door is closed; when the room temperature is smaller than or equal to T0 or the refrigeration time reaches time1, stopping refrigeration, and recording the temperature as T1; 3, after stopping the refrigeration for time2, recording the temperature T2, and calculating a T2-T1 difference value; 4, setting temperature parameters Ta and Tb, wherein Ta is smaller than Tb, starting and stopping point temperature values are T3 and T4, refrigeration run timeare time3 and time4; comparing the T2-T1 difference value with the Ta and the Tb; and 5, after the running in the step 4 is finished, recovering the constant-temperature chamber and running at the original starting and stopping point temperature. By detecting the variation of the temperature in the constant-temperature chamber, the temperature of the placed article can be quickly judged, the response speed of temperature control of the constant-temperature chamber is increased, and the time for the placed article to reach the target constant-temperature temperature is effectively shortened.

Description

technical field [0001] The invention belongs to the technical field of refrigerators, in particular to a fuzzy control method for a constant temperature compartment. Background technique [0002] With the development of the times, the storage function of the refrigerator is becoming more and more perfect. It has been proved by experiments that the smaller the fluctuation of the room temperature, the better the storage of food. More and more new refrigerators begin to carry a constant temperature compartment. [0003] In a single-system refrigerator, the temperature range of the constant temperature compartment has exceeded the temperature control range of the refrigerator compartment, so most of the constant temperature compartments use the cooling capacity of the refrigerating evaporator to achieve temperature control, specifically, the refrigerating evaporator, refrigerating fan and The damper of the constant temperature compartment realizes the cooling of the constant te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D29/00
CPCF25D29/00F25D2500/06F25D2600/06F25D2600/02F25D2700/02F25D2700/12Y02B40/00
Inventor 刘宏宇程琳
Owner CHANGHONG MEILING CO LTD