CN202382513U

CN202382513U - Variable-frequency refrigerator

Info

Publication number: CN202382513U
Application number: CN2011205299647U
Authority: CN
Inventors: 白连社; 魏邦福; 李子胜
Original assignee: Hefei Meiling Co ltd
Current assignee: Changhong Meiling Co Ltd
Priority date: 2011-12-16
Filing date: 2011-12-16
Publication date: 2012-08-15
Anticipated expiration: 2021-12-16

Abstract

The utility model discloses a variable-frequency refrigerator, which comprises a master control board, a refrigeration sensor, a freezing sensor, an environment temperature sensor and a variable speed fan. The refrigeration sensor, the freezing sensor, the environment temperature sensor and the variable speed fan are connected with the master control board; a variable-frequency compressor drive plate is connected with the master control board and a power source; and a variable-frequency compressor is connected with the variable-frequency compressor drive plate. The variable-frequency compressor and the variable speed fan are controlled to enter different operation modes according to the detected temperature of each sensor and instructions sent by a display panel after comprehensive analysis and calculation by the master control board, so as to effectively ensure that the refrigerator can quickly reach an optimal operation state under various working conditions.

Description

A kind of frequency conversion refrigerator

Technical field:

The utility model relates to a kind of frequency conversion refrigerator.

Background technology:

Existing frequency conversion refrigerator is mainly considered the rotating speed control of frequency-changeable compressor; Progressively begin to have used simultaneously variable speed fan and frequency-changeable compressor on the now refrigerator; Also do not take all factors into consideration under the different condition a kind of concrete control method of variable speed fan and frequency-changeable compressor rotating speed at present.

Summary of the invention:

For overcoming the defective of prior art; The purpose of the utility model is to provide a kind of frequency conversion refrigerator; Master control borad is according to the instruction of detected each sensor temperature and display board transmission; After analysis-by-synthesis was calculated, control frequency-changeable compressor, variable speed fan got into different running mode, have guaranteed that effectively refrigerator can both reach optimal operational condition apace under various working conditions.

The utility model technical solution problem adopts following technical scheme:

A kind of frequency conversion refrigerator; Comprise master control borad; The refrigeration sensor that is connected with master control borad, freezing sensor, ring temperature sensor and variable speed fan, the frequency-changeable compressor drive plate is connected with said master control borad and power supply, and frequency-changeable compressor is connected with said frequency-changeable compressor drive plate.

Be connected with display board on the said master control borad.

The said frequency-changeable compressor range of speeds is S1～S2, and wherein S1 is a minimum speed, and S2 is a maximum speed; The said variable speed fan range of speeds is S3～S4, and wherein S3 is a minimum speed, and S4 is a maximum speed, and it is T1～T2 that said ring temperature sensor detects the ambient temperature scope.

Compared with present technology, the beneficial effect of the utility model is embodied in:

Master control borad is according to the instruction of detected each sensor temperature and display board transmission; After analysis-by-synthesis is calculated; Control frequency-changeable compressor, variable speed fan get into different running mode, have guaranteed that effectively refrigerator can both reach optimal operational condition apace under various working conditions.

Description of drawings:

Fig. 1 is the electrical schematic diagram of the related part of the utility model.

Fig. 2 is the utility model control method FB(flow block).

Below pass through the specific embodiment, and in conjunction with the accompanying drawings the utility model is described further.

The specific embodiment:

Embodiment: referring to Fig. 1,2; The frequency conversion refrigerator of present embodiment; Refrigerator display panel and master control borad adopt the mode of agreement to carry out communication, and the refrigerator master control borad is gathered each chamber, environment temperature through a plurality of temperature sensors (refrigeration sensor, freezing sensor, ring temperature sensor); The refrigerator master control borad directly drives variable speed fan through hardware circuit, software and moves with different rotating speed; The refrigerator master control borad is passed to the frequency-changeable compressor drive plate with the rotary speed information of needs through communications protocol, and frequency-changeable compressor drive plate Driven Compressor is by specifying the rotating speed operation.

Setting the frequency-changeable compressor range of speeds is S1～S2, and wherein S1 is a minimum speed, and S2 is a maximum speed; The said variable speed fan range of speeds is S3～S4, and wherein S3 is a minimum speed, and S4 is a maximum speed, and it is T1～T2 that said ring temperature sensor detects the ambient temperature scope.

The control method of the utility model frequency conversion refrigerator comprises the steps:

1) the refrigerator energising starts;

2) judge whether refrigeration, freezing sensor temperature satisfy compressor start condition,

If do not satisfy, then return step 2);

If satisfy, then get into next step;

3) master control borad sends instruction according to display board, whether judges current set condition at quick-frozen or fast cold state,

If then the drive variable frequency compressor moves with the S4 rotating speed with S2 rotating speed, variable speed fan;

If not, get into next step 4);

4) master control borad control method:

1. at first divide the fan rotating speed to be divided into n five equilibrium, i.e. compressor rotary speed compressor rotary speed, speed change:

{S 1, S 1 + \frac{S 2 - S 1}{n},

S 1 + \frac{2 (S 2 - S 1)}{n}, S 1 + \frac{3 (S 2 - S 1)}{n}, \cdot \cdot \cdot \cdot \cdot \cdot, S 2};

The variable speed fan rotating speed:

{S 3, S 3 + \frac{S 4 - S 3}{n},

S 3 + \frac{2 (S 4 - S 3)}{n}, S 3 + \frac{3 (S 4 - S 3)}{n}, \cdot \cdot \cdot \cdot \cdot \cdot, S 4};

To encircle temperature sensor detected temperatures scope T1～T2 and carry out segmentation with temperature T 0, T1＜T0＜T2 wherein, being segmented into is T1～T0 and two stages of T0～T2, is divided into the n five equilibrium in T0～T2 scope:

{T 0, T 0 + \frac{T 2 - T 0}{n}, T 0 + \frac{2 (T 2 - T 0)}{n}, T 0 + \frac{3 (T 2 - T 0)}{n}, \cdot \cdot \cdot \cdot \cdot \cdot, T 2};

2. judge that current ambient temperature Th drops on the interval of T1～T2:

In the interval T1 ~ T0, variable speed compressor, the fan speed by default S1, S3 speed operation t1 minutes; if T0 ~ T2 interval T0 ~ T2 falls under Th aliquots of n range, select the corresponding inverter compressor speed Sx, variable speed fan speed Sy run t1 minutes, take the right boundary of the corresponding interval speed; eg:

the inverter compressor

variable speed fans to

speed operation t1 minutes;

3. after moving t1 minute with mode in 2.; Judge the degree of approach of refrigeration sensor temperature Tc, freezing sensor temperature Td and target temperature refrigeration break point Tcoff, freezing break point Tdoff; With the value of Tc-Tcoff, Td-Tdoff divided by N; Wherein N gets positive integer; The result keeps integer part N1 and N2; Get the greater among N1, the N2; Suppose N2＞N1, revise rotating speed on the rotating speed basis of then frequency-changeable compressor, variable speed fan being confirmed for

but maximum is no more than S2, S4 in 2.; After this if not having to detect satisfies condition in the step 3), then after t2 minute, repeat 3. to detect by revised rotating speed operation; Revised once in the every interval t2 of rotating speed minute, operation is up to compressor shutdown;

4. return step 2).

Claims

1. frequency conversion refrigerator; Comprise master control borad, the refrigeration sensor that is connected with master control borad, freezing sensor, ring temperature sensor and variable speed fan is characterized in that; The frequency-changeable compressor drive plate is connected with said master control borad and power supply, and frequency-changeable compressor is connected with said frequency-changeable compressor drive plate.

2. a kind of frequency conversion refrigerator according to claim 1 is characterized in that, is connected with display board on the said master control borad.

3. a kind of frequency conversion refrigerator according to claim 1 is characterized in that, the said frequency-changeable compressor range of speeds is S1～S2, and wherein S1 is a minimum speed, and S2 is a maximum speed; The said variable speed fan range of speeds is S3～S4, and wherein S3 is a minimum speed, and S4 is a maximum speed, and it is T1～T2 that said ring temperature sensor detects the ambient temperature scope.