CN201837195U - Control module of intelligent frequency-conversion freezer - Google Patents

Abstract

A control module of an intelligent frequency conversion refrigerator, the control module of the intelligent frequency conversion refrigerator mainly includes: a frequency conversion compressor, a compressor frequency conversion controller electrically connected to the frequency conversion compressor, and a refrigerator system controller communicatively connected to the compressor frequency conversion controller . Because of the frequency conversion compressor, the control mode of the freezer can automatically adapt to the actual working conditions of the freezer system, which not only increases the refrigeration capacity of the freezer system, but also reduces the energy consumption during the operation of the freezer system, which is convenient for users and improves the efficiency of the freezer system. The temperature control accuracy and display accuracy of the freezer.

Description

Control module of intelligent frequency conversion refrigerator

technical field

The utility model relates to the field of refrigerators, in particular to a control module of an intelligent frequency conversion refrigerator. the

Background technique

Refrigerators have already become an indispensable household appliance in daily life. The refrigerator relies on the operation of the compressor to achieve cooling through the heat exchange of the refrigerant in the evaporator and condenser. the

Existing refrigerators use fixed-frequency compressors. Due to the use of fixed-frequency compressors, the output cooling capacity of the system cannot be adjusted according to the load of the refrigerator system, and the refrigeration capacity of refrigerator products and the power consumption during operation cannot be taken into account at the same time. If it is necessary to meet the refrigeration capacity requirements, the refrigeration capacity of the compressor must be increased, and if it is necessary to meet the power consumption requirements of the refrigerator during operation, the refrigeration capacity of the compressor must be reduced. However, the refrigeration capacity of the current fixed-frequency compressor is not enough. able to adjust. the

The existing freezer adopts traditional mechanical temperature control, the temperature control accuracy is not high, and the user cannot know the actual temperature inside the box. the

Utility model content

The technical problem to be solved by the utility model is to provide a control module of an intelligent frequency conversion freezer, which can automatically adapt to various working conditions of the freezer system in actual use, which not only increases the freezing capacity of the freezer system, but also reduces the operating time of the freezer system. Low energy consumption, convenient for users to use, improve the temperature control accuracy and display accuracy of the freezer. the

The technical problem to be solved by the utility model can be realized through the following technical solutions: a control module of an intelligent frequency conversion refrigerator, characterized in that it includes: a frequency conversion compressor, a compressor frequency conversion controller electrically connected to the frequency conversion compressor, and The refrigerator system controller connected by communication with the frequency conversion controller of the compressor, this patent not only improves the refrigeration capacity of the current refrigerator, but also greatly reduces the power consumption during the operation of the refrigerator. the

The control module of the refrigerator further includes a fan, wherein the fan is electrically connected to the frequency conversion controller of the compressor, and the control module of the refrigerator further includes a box temperature detection sensor and an ambient temperature detection sensor, wherein the box temperature detection sensor and The ambient temperature detection sensors are respectively electrically connected to the refrigerator system controller. the

The electric control system of the freezer is divided into two parts: the frequency conversion controller of the compressor and the system controller of the freezer. the

The freezer system controller realizes the overall function control of the freezer, and the frequency conversion controller of the compressor receives the instructions from the host computer (refrigerator system controller), mainly controls the start and stop of the compressor, the speed and realizes various protection functions. The frequency conversion board is relatively independent in structure and function, and has strong versatility. It can be easily changed to other low-power electrical appliance controllers that need frequency conversion control. the

The rotating speed of the variable frequency compressor of the frequency conversion refrigerator can be adjusted according to the induction of the slight temperature change in the refrigerator. In the state of the highest operating efficiency, the internal temperature change of the refrigerator is controlled to the optimum, so as to maintain the most suitable temperature for fresh keeping. the

This patent can be used for the following:

1. The user can conveniently set the temperature of the control point of the freezer, and at the same time, the user can conveniently observe the actual temperature inside the freezer box. the

2. Detect the actual temperature in the freezer box, so that the cooling capacity of the system can be adjusted according to the temperature difference (actual temperature in the box-user-set temperature). the

3. Detect the ambient temperature when the freezer system is in use, so that the freezer can automatically adapt to the actual working conditions. the

4. Algorithm of detection point temperature value. Because the user is concerned about the temperature inside the box, however, the temperature detection point inside the box of the actual refrigerator product can only be installed on the inner wall of the box or in the foam layer of the box. In this way, a large temperature difference is generated due to different detection points. The controller of the freezer system can comprehensively estimate the actual temperature in the box by combining the running status of the freezer, such as: compressor running or stopping time, ambient temperature and other parameters. In this way, the dynamic response time requirement of the cabinet temperature is met, and at the same time, the steady-state display accuracy of the cabinet temperature can be guaranteed. the

The beneficial effects of the utility model are:

1. Compressor: It adopts brushless DC motor (BLDC), which has high efficiency, large starting torque and long service life. the

2. Improve the COP of the system and reduce the power consumption of the freezer. the

3. The temperature of the cabinet is constant: the computer temperature control is adopted, and the temperature control accuracy is ±0.3°C. the

4. Avoid frequent start and stop of the compressor: due to the use of the frequency conversion compressor, the output cooling capacity of the system can be adjusted, which can effectively avoid the frequent start and stop of the compressor under light load. the

5. Due to the use of frequency conversion controller, the freezer can work reliably even when the input voltage is low (170VAC), avoiding the fatal shortcoming that the current fixed frequency compressor cannot work at low voltage. the

The features of the utility model can be clearly understood by referring to the drawings of this case and the detailed description of the following preferred embodiments. the

Description of drawings

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. the

Fig. 1 is a schematic structural diagram of the electric control system of the present invention. the

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments. the

1 is the freezer system controller, 2 is the frequency conversion controller of the compressor, 3 is the frequency conversion compressor, 4 is the fan, 5 is the temperature detection sensor of the cabinet, and 6 is the ambient temperature detection sensor. the

Referring to Fig. 1, a control module of an intelligent frequency conversion refrigerator, the control block diagram is shown in Fig. 1 . the

The refrigerator system controller 1 can accept user instructions, such as: the working mode of the refrigerator, the set temperature point in the cabinet and other parameters. The refrigerator system controller 1 is connected with the cabinet temperature detection sensor 5 and the ambient temperature detection sensor 6, and detects the temperature inside the cabinet and the ambient temperature of the refrigerator through the cabinet temperature detection sensor 5 and the ambient temperature detection sensor 6. According to the input parameters and the current temperature of the refrigerator The state of the compressor communicates with the frequency conversion controller 2 of the compressor to issue instructions to control the working status of the frequency conversion controller of the compressor. The frequency conversion controller 2 of the compressor mainly controls the start-stop, rotation speed and various protection functions of the frequency conversion compressor 3 . Compressor frequency conversion controller is relatively independent in structure and function, and has strong versatility. It can be easily changed to other low-power electrical appliance controllers that need frequency conversion control. the

The three terminals W-V-U output by the frequency conversion controller 2 of the compressor are connected to the frequency conversion compressor 3, and the BLDC motor in the frequency conversion compressor 3 operates efficiently according to the drive signal of the frequency conversion board. the

The frequency conversion controller 2 of the compressor is electrically connected to the fan 4, and the fan 4 is controlled to start and stop by the frequency conversion controller 2 of the compressor. the

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents. the

Claims (3)

1. A control module of an intelligent frequency conversion refrigerator, characterized in that it comprises: a frequency conversion compressor, a compressor frequency conversion controller electrically connected to the frequency conversion compressor, and a refrigerator system controller communicatively connected to the compressor frequency conversion controller. 2. The control module of the refrigerator according to claim 1, characterized in that, the control module of the refrigerator further comprises a fan, wherein the fan is electrically connected to the frequency conversion controller of the compressor. 3. The control module of the refrigerator according to claim 2, wherein the control module of the refrigerator further comprises a cabinet temperature detection sensor and an ambient temperature detection sensor, wherein the cabinet temperature detection sensor and the ambient temperature detection sensor Respectively electrically connect the refrigerator system controller. the

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