JPH1038439A - Operation control device for refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a user from feeling uncomfortable during the use of a refrigerator by reducing the generation of vibration of a refrigerator and prevent the occurrence of breakage of a piping since vibration is transmitted to a refrigerator body due to resonance of a piping, a user feels an uncomfortable feeling or a problem on breakage of a piping due to resonance of the piping arises. SOLUTION: An operation control device for a refrigerator comprises a refrigerator back part vibration detecting means 12 to detect vibration of the back part of a refrigerator; a comparing circuit 13 to compare an input value from the refrigerator back part vibration detecting means 12 and a threshold with each other; and an inverter circuit output frequency correction circuit 14 to correct an inverter circuit output frequency outputted from an inverter circuit output deciding circuit 5 by means of the output of the comparing circuit 13. This constitution reduces the generation of vibration of the refrigerator and prevents a user from feeling uncomfortable during the use of the refrigerator.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to operation control of a refrigerator having an inverter circuit for performing variable speed control of a compressor.

[0002]

2. Description of the Related Art A conventional refrigerator operation control device is disclosed in Japanese Patent Application Laid-Open No. 6-273029. FIG. 9 is a block diagram of a conventional operation control device for a refrigerator, and FIG. 10 is a flowchart showing the operation.

[0005] In FIG. 9, reference numeral 1 denotes an internal temperature detecting means for detecting the internal temperature of the refrigerator, and 2 denotes a set temperature detecting means for detecting a set temperature. Reference numeral 3 denotes a control device that controls the output frequency of the inverter circuit. Reference numeral 4 denotes a silent mode setting switch for setting a silent mode. Reference numeral 5 denotes an inverter circuit output frequency determination circuit,
The set temperature detecting means 2 is connected to the silent mode setting switch 4.

This inverter circuit output frequency determination circuit 5
Are the inside temperature detecting means 1 and the set temperature detecting means 2
, The output frequency of the inverter circuit is determined by the magnitude of the temperature difference between the two, and when the silent mode setting switch 4 is turned on, the output frequency of the inverter circuit is determined at a frequency lower than that of the commercial power supply.

Reference numeral 6 denotes compressor vibration detecting means for detecting vibration of the compressor. Reference numeral 7 denotes a resonance frequency detection circuit for detecting a resonance frequency based on the output of the compressor vibration detection means 6, and reference numeral 8 denotes an output frequency correction circuit for correcting the output frequency.

The resonance frequency circuit 7 outputs a resonance frequency based on the output of the compressor vibration detecting means 6, and outputs the resonance frequency and the inverter circuit output frequency determination circuit 5
Is output to the output frequency correction circuit 8, it is determined whether or not the output frequency is the same in the output frequency correction circuit 8. The output is slightly shifted in frequency.

The control device 3 comprises the inverter circuit output frequency determination circuit 5, the resonance frequency detection circuit 7, and the output frequency correction circuit 8.

Reference numeral 9 denotes an inverter circuit, and 10 denotes a compressor. The compressor 10 is operated by the inverter circuit 9 at the frequency output by the control device 3.

The operation of the operation control device for a refrigerator configured as described above will be described below with reference to FIG.

In step 1, the internal temperature output from the internal temperature detecting means 1 is compared with the set temperature output from the set temperature detecting means 2.

Next, if the silent mode is set by the output of the silent mode setting switch 4 in step 2, the process proceeds to step 3, the output frequency is set lower than the commercial power supply frequency, and in step 4, the temporary output frequency is determined. If the silent mode has not been set, the tentative output frequency is determined in step 4 based on the output from the inverter circuit output frequency determination circuit 5 based on the comparison in step 1.

Next, at step 5, if the compressor vibration resonance frequency detected by the resonance frequency detection circuit 7 from the output of the compressor vibration detection means 6 and the provisional output frequency determined at step 4 are the same, at step 6 The output frequency correction circuit 8 corrects the output frequency at a slightly shifted frequency. If the compressor vibration resonance frequency is not the same as the temporary output frequency, a signal is output to the inverter circuit 9 at the temporary output frequency determined in step 4 to operate the compressor 10.

[0013]

However, in the above-described conventional configuration, the operation is performed only when the silent mode is set. Even if the resonance frequency of the vibration of the compressor can be shifted, the resonance frequency of the piping is shifted. When the refrigerator cannot be used, there is a problem in that vibrations are transmitted to the cabinet of the refrigerator due to the resonance of the pipes, thereby giving an unpleasant feeling when using the refrigerator, and also causing pipe breakage due to the resonance of the pipes.

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems, and provides a refrigerator operation control device for suppressing vibration of a refrigerator so as not to cause discomfort when the refrigerator is always used and to prevent pipe breakage. is there.

[0015]

SUMMARY OF THE INVENTION In order to solve this problem, an operation control device for a refrigerator according to the present invention comprises a refrigerator rear vibration detecting means for detecting vibration of a refrigerator rear and a refrigerator flat vibration detecting means. And a control device for controlling the output frequency of the inverter circuit by comparing the output with a certain threshold value.

With this arrangement, the vibration transmission to the refrigerator rear is detected, and when the vibration of the refrigerator rear exceeds a certain threshold, the output frequency of the inverter circuit is changed to suppress the vibration of the refrigerator rear. Therefore, when the refrigerator is used, it does not give an unpleasant sensation such as chattering noise from the wall.

A refrigerator door vibration detecting means for detecting the vibration of the refrigerator door, and a control device for controlling the output frequency of the inverter circuit by comparing the output from the refrigerator door vibration detecting means with a certain threshold value. Is provided.

Thus, the vibration transmission to the refrigerator door is detected, and when the vibration of the refrigerator door exceeds a certain threshold, the output frequency of the inverter circuit is changed to control the vibration of the refrigerator door. Therefore, when the refrigerator is used, it does not cause discomfort such as chattering at the door.

Further, the apparatus comprises a refrigerator bottom vibration detecting means for detecting the vibration of the refrigerator bottom, and a control device for controlling the output frequency of the inverter circuit by comparing the output from the refrigerator bottom vibration detecting means with a certain threshold value. It has a configuration.

Thus, the vibration transmission to the refrigerator bottom is detected, and when the vibration of the refrigerator bottom exceeds a certain threshold value, the output frequency of the inverter opening R is changed to control the vibration of the refrigerator bottom. In addition, the transmission of vibration to the floor is suppressed to a low level so as not to cause discomfort such as chattering noise with the floor when the refrigerator is used.

Further, there is provided a refrigerator piping stress detecting means for detecting the piping stress of the refrigerator, and a control device for controlling the output frequency of the inverter circuit by comparing the output from the refrigerator piping stress detecting means with a certain threshold value. It has a configuration.

Thus, the piping stress of the refrigerator is detected,
When the piping stress of the refrigerator exceeds a certain threshold value, the output frequency of the inverter circuit is changed to control the refrigerator's piping stress to be small, so that the piping is not broken due to piping fatigue. .

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a refrigerator internal temperature detecting means for detecting the refrigerator internal temperature,
Set temperature detecting means for detecting the set temperature, refrigerator back vibration detecting means for detecting the vibration of the refrigerator back, an inverter for determining the output frequency of the inverter circuit based on the inputs of the inside temperature detecting means and the set temperature detecting means. A circuit output frequency determination circuit, a comparison circuit for comparing an input value from the refrigerator back surface vibration detection means with a certain threshold value, and an inverter circuit output output from the inverter circuit output determination circuit based on an output of the comparison circuit. An inverter circuit for correcting the frequency, comprising an output frequency correction circuit, which is a refrigerator operation control device for controlling the output frequency of the inverter circuit to change when the vibration of the back of the refrigerator exceeds a certain threshold value; If the vibration of the unit exceeds a certain threshold, the output frequency of the inverter circuit is changed and the vibration on the back of the refrigerator is changed. To control such that suppress, an effect that it is possible to avoid giving discomfort such as chattering noise of the wall when the refrigerator used.

According to a second aspect of the present invention, when the refrigerator door vibration exceeds a certain threshold value, the output frequency of the inverter circuit is increased when the refrigerator door vibration exceeds a threshold value. It is a refrigerator operation control device that controls so as to change the output frequency of the inverter circuit when the vibration of the refrigerator door exceeds a certain threshold to control the vibration of the refrigerator door, It has an effect that it is possible to prevent discomfort such as chatter of a door when using a refrigerator.

According to a third aspect of the present invention, when the vibration of the refrigerator bottom exceeds a certain threshold value, the output frequency of the inverter circuit is changed when the refrigerator bottom vibration is detected by detecting the vibration of the refrigerator bottom. When the vibration of the bottom of the refrigerator exceeds a certain threshold, the frequency of the inverter circuit is changed to control the vibration of the bottom of the refrigerator. It has an effect that it is possible to suppress the discomfort such as chattering noise from the floor when the refrigerator is used.

According to a fourth aspect of the present invention, there is provided a refrigerator piping stress detecting means for detecting a piping stress of the refrigerator, so that when the piping stress of the refrigerator exceeds a certain threshold value, the output frequency of the inverter circuit is changed. This is a refrigerator operation control device that controls the refrigerator to reduce the piping stress of the refrigerator by changing the output frequency of the inverter circuit when the piping stress exceeds a certain threshold value. This has the effect that pipe breakage can be prevented.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is a configuration diagram of a refrigerator operation control device according to a first embodiment of the present invention. FIG. 2 is a flowchart showing the operation of the refrigerator operation control device according to the embodiment. For the same configuration as the conventional one,
The same reference numerals are given and the detailed description is omitted.

In FIG. 1, reference numeral 12 denotes a refrigerator back surface vibration detecting means for detecting vibrations at the back and side portions of the refrigerator.
A comparison circuit 13 is connected to the inverter circuit output frequency determination circuit 5 and the refrigerator back surface vibration detecting means 12. Reference numeral 14 denotes an inverter circuit output frequency correction circuit.
If the input from 2 exceeds a certain threshold, the output frequency to the inverter circuit is corrected so as to be below a certain threshold. Reference numeral 11 denotes a control device, which includes the inverter circuit output frequency determination circuit 5, the comparison circuit 13, and the inverter circuit output frequency correction circuit 14. Fifteen
Is an inverter circuit frequency output device that outputs the frequency input from the control device 11 to the inverter circuit 9 to operate the compressor 10.

The operation of the operation control device for a refrigerator configured as described above will be described with reference to FIG.

In FIG. 2, the output of the inside temperature detecting means 1 is inputted in step 101, and the output of the set temperature detecting means 2 is inputted in step 102. Next, in step 103, the internal temperature input in step 101 and step 102 is compared with the set temperature, and in step 104
Determines the output frequency of the temporary inverter circuit. Next, in step 105, the output of the refrigerator back vibration detecting means 12 is input, and in step 106,
And compares the refrigerator back vibration value input with a certain threshold value. If the vibration value at the back of the refrigerator is larger than a certain threshold value, the process proceeds to step 107, where the inverter output frequency correction circuit 14 corrects the output frequency of the inverter circuit. Proceeding to 108, the inverter circuit frequency is output to the inverter circuit frequency output device 15.

In this embodiment, if the place where the vibration of the refrigerator rear is detected is a place where it may come into contact with a wall or the like when the refrigerator is used and chattering noise is generated, such as a refrigerator side, for example, is not.

(Embodiment 2) FIG. 3 shows a configuration diagram of a refrigerator operation control device according to a second embodiment of the present invention. FIG. 4 is a flowchart showing the operation of the refrigerator operation control device according to the embodiment. In addition, the first of the present invention
The same reference numerals are given to the same configurations as those of the embodiment, and the detailed description is omitted.

In FIG. 3, reference numeral 17 denotes a refrigerator door vibration detecting means for detecting the vibration of the refrigerator door. A comparison circuit 18 is connected to the inverter circuit output frequency determination circuit 5 and the refrigerator door vibration detecting means 17. 1
Reference numeral 4 denotes an inverter circuit output frequency correction circuit. When the input from the refrigerator door vibration detecting means 17 exceeds a certain threshold in the comparison circuit 18, the output frequency to the inverter circuit is set to be below a certain threshold. Is corrected. Reference numeral 16 denotes a control device which includes the inverter circuit output frequency determination circuit 5, the comparison circuit 18, and the inverter circuit output frequency correction circuit 14.

The operation of the operation control device for a refrigerator configured as described above will be described with reference to the drawings.

From the start to step 104, the operation proceeds in the same manner as in the first embodiment of FIG. 2. In FIG. 4, the output of the refrigerator door vibration detecting means 17 is inputted in step a, and in step b, the output of the refrigerator door vibration detecting means 17 is inputted. The input refrigerator door vibration value is compared with a certain threshold value. Step 1 if the refrigerator door vibration value is larger than a certain threshold
In step 07, the same operation as in the first embodiment shown in FIG. 2 is performed. If the refrigerator door vibration value is smaller than a certain threshold value, the process proceeds to step 108.
The same operation as that of the embodiment is performed.

The location where the vibration of the refrigerator door is detected is not limited to the present embodiment as long as it is a location where the refrigerator may come into contact with the refrigerator and cause discomfort such as chatter.

(Embodiment 3) FIG. 5 shows a configuration diagram of a refrigerator operation control device according to a third embodiment of the present invention. FIG. 6 is a flowchart showing the operation of the refrigerator operation control device according to the embodiment. In addition, the first of the present invention
The same reference numerals are given to the same configurations as those of the embodiment, and the detailed description is omitted.

In FIG. 5, reference numeral 20 denotes a refrigerator bottom vibration detecting means for detecting the vibration of the bottom of the refrigerator. A comparison circuit 21 is connected to the inverter circuit output frequency determination circuit 5 and the refrigerator bottom vibration detection means 20. Numeral 14 denotes an inverter circuit output frequency correction circuit. When the input from the refrigerator bottom vibration detecting means 20 exceeds a certain threshold value in the comparison circuit 21, the output frequency to the inverter circuit is reduced to a certain threshold value or less. to correct. 19 is a control device, which is the inverter circuit output frequency determination circuit 5,
It comprises the comparison circuit 21 and the inverter circuit output frequency correction circuit 14.

The operation of the operation control device for a refrigerator configured as described above will be described with reference to FIG.

From the start to step 104, the operation proceeds in the same manner as in the first embodiment of FIG. 2. In FIG. 6, the output of the refrigerator bottom vibration detecting means 20 is input in step c, and in step d, the input is performed in step c. The obtained refrigerator bottom vibration value is compared with a certain threshold value. If the refrigerator bottom vibration value is larger than a certain threshold value, the process proceeds to step 107, and the following operation is the same as that of the first embodiment shown in FIG. If the refrigerator bottom vibration value is smaller than a certain threshold value, the process proceeds to step 108, and the same operation as that of the first embodiment shown in FIG.

Note that the place where the vibration at the bottom of the refrigerator is detected is a place where there is a possibility that chattering noise such as a floor may be generated by transmitting vibration to the floor or the like in a state where the refrigerator is installed. Absent.

(Embodiment 4) FIG. 7 is a configuration diagram of a refrigerator operation control device according to a fourth embodiment of the present invention. FIG. 8 is a flowchart showing the operation of the refrigerator operation control device according to the embodiment. In addition, the first of the present invention
The same reference numerals are given to the same configurations as those of the embodiment, and the detailed description is omitted.

In FIG. 7, reference numeral 23 denotes refrigerator piping stress detecting means for detecting the piping stress of the refrigerator. A comparison circuit 24 is connected to the inverter circuit output frequency determination circuit 5 and the refrigerator piping stress detection means 23. Numeral 14 denotes an inverter circuit output frequency correction circuit. In the comparison circuit 24, when the input from the refrigerator piping stress detecting means 23 exceeds a certain threshold value, the output frequency to the inverter circuit is reduced to a certain threshold value or less. to correct. A control device 22 includes the inverter circuit output frequency determination circuit 5, the comparison circuit 24, and the inverter circuit output frequency correction circuit 14.

The operation of the operation control device for a refrigerator configured as described above will be described with reference to FIG.

From the start to step 104, the operation proceeds in the same manner as in the first embodiment shown in FIG. 2. In FIG. 8, the output of the refrigerator piping stress detecting means 23 is inputted in step e, and the output is inputted in step e in step f. The obtained refrigerator piping stress value is compared with a certain threshold value. If the refrigerator piping stress value is larger than a certain threshold value, the process proceeds to step 107, and the following operation is the same as that of the first embodiment shown in FIG. On the other hand, if the refrigerator piping stress value is smaller than a certain threshold value, the process proceeds to step 108, and the following operation is the same as that of the first embodiment shown in FIG.

The location where the piping stress of the refrigerator is detected is not limited to the present embodiment as long as the location where the piping may be broken due to piping fatigue during the operation of the refrigerator.

[0047]

As described above, the present invention relates to a refrigerator internal temperature detecting means for detecting a refrigerator internal temperature, a set temperature detecting means for detecting a set temperature, and a refrigerator rear face for detecting vibration of a refrigerator rear portion. Part vibration detection means, an inverter circuit output frequency determination circuit that determines an inverter circuit output frequency based on the inputs of the internal temperature detection means and the set temperature detection means, and an input value from the refrigerator back part vibration detection means. A comparison circuit for comparing the threshold value with a threshold value; and an inverter circuit output frequency correction circuit for correcting the inverter circuit output frequency output from the inverter circuit output determination circuit based on the output of the comparison circuit. A refrigerator operation control device that controls the output frequency of the inverter circuit to change when the threshold value is exceeded. If the vibration exceeds a certain threshold, the output frequency of the inverter circuit is changed to control the vibration of the refrigerator flat part, so that when using the refrigerator, the discomfort such as chatter noise with the wall is not given. can do.

Further, the refrigerator is provided with a refrigerator door vibration detecting means for detecting the vibration of the refrigerator door, so that when the vibration of the refrigerator door exceeds a certain threshold value, the refrigerator is controlled to change the output frequency of the inverter circuit. When the refrigerator door vibrates above a certain threshold, it changes the output frequency of the inverter circuit and controls the refrigerator door to suppress vibration. Such discomfort can be prevented.

Further, a refrigerator bottom vibration detecting means for detecting the vibration of the bottom of the refrigerator is provided, so that when the vibration of the bottom of the refrigerator exceeds a certain threshold value, the operation control of the refrigerator is controlled so as to change the output frequency of the inverter circuit. It is a device that controls the output frequency of the inverter circuit when the vibration at the bottom of the refrigerator exceeds a certain threshold to control the vibration at the bottom of the refrigerator. It is possible to avoid giving an unpleasant feeling such as chatter sound.

Further, the refrigerator has a refrigerator piping stress detecting means for detecting the piping stress of the refrigerator, so that when the piping stress of the refrigerator exceeds a certain threshold value, the operation control of the refrigerator is controlled to change the output frequency of the inverter circuit. It is a device that controls the output frequency of the inverter circuit to reduce the piping stress of the refrigerator when the piping stress of the refrigerator exceeds a certain threshold, so that the piping does not break due to piping fatigue. can do.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an operation control device according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the operation control device according to the first embodiment of the present invention.

FIG. 3 is a configuration diagram showing an operation control device according to a second embodiment of the present invention.

FIG. 4 is a flowchart showing the operation of the operation control device according to the second embodiment of the present invention.

FIG. 5 is a configuration diagram showing an operation control device according to a third embodiment of the present invention.

FIG. 6 is a flowchart showing the operation of the operation control device according to the third embodiment of the present invention.

FIG. 7 is a configuration diagram showing an operation control device according to a fourth embodiment of the present invention.

FIG. 8 is a flowchart showing the operation of the operation control device according to the fourth embodiment of the present invention.

FIG. 9 is a configuration diagram showing a conventional operation control device.

FIG. 10 is a flowchart showing the operation of a conventional operation control device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Internal temperature detection means 2 Set temperature detection means 5 Inverter circuit output frequency determination circuit 12 Refrigerator back vibration detection means 13 Comparison circuit 14 Inverter circuit output frequency correction circuit 17 Refrigerator door vibration detection means 20 Refrigerator bottom vibration detection means 23 Refrigerator Piping stress detection means

Claims (4)

[Claims] 1. A refrigerator internal temperature detecting means for detecting a refrigerator internal temperature, a set temperature detecting means for detecting a set temperature, a refrigerator back part vibration detecting means for detecting a vibration of a refrigerator back part, An inverter circuit output frequency determination circuit that determines an inverter circuit output frequency based on the input of the temperature detection unit and the set temperature detection unit, and a comparison circuit that compares an input value from the refrigerator back surface vibration detection unit with a certain threshold value. An inverter circuit output frequency correction circuit for correcting the inverter circuit output frequency output from the inverter circuit output determination circuit by the output of the comparison circuit, when the vibration of the refrigerator back exceeds a certain threshold,
An operation control device for a refrigerator that controls to change the output frequency of the inverter circuit. 2. A refrigerator door vibration detecting means for detecting a vibration of a refrigerator door, wherein when the vibration of the refrigerator door exceeds a certain threshold, the output frequency of the inverter circuit is controlled to be changed. 2. The operation control device for a refrigerator according to claim 1. 3. The refrigerator according to claim 1, further comprising a refrigerator bottom vibration detecting means for detecting the vibration of the refrigerator bottom, and controlling the output frequency of the inverter circuit to change when the vibration of the refrigerator bottom exceeds a certain threshold value. Operation control device for refrigerator. 4. The refrigerator according to claim 1, further comprising a refrigerator piping stress detecting means for detecting a piping stress of the refrigerator, wherein the output frequency of the inverter circuit is changed when the piping stress of the refrigerator exceeds a certain threshold. Operation control device for refrigerator.