JP2005172299A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a controller capable of inhibiting the rise of inside temperature of a refrigerator equipped with a variable speed control type compressor. <P>SOLUTION: This refrigerator comprises a compressor rotational frequency control means 15 for variably controlling a rotational frequency of a motor for driving the compressor of the refrigerator, a door opening and closing angle detecting means 11 for detecting an opening and closing state and an opening and closing angle of a refrigerator door, a door opening and closing angle determining means 12 for comparing the opening and closing angle of the refrigerator door with a predetermined opening and closing angle, a door opening time counting timer 13 for integrating a lapsed time of the door opening state, and a door opening time determining means 14 for comparing the lapsed time of the door opening state with the predetermined lapsed time of the door opening state. The opening and closing angle of the refrigerator door and the lapsed time of the opening state are determined when the refrigerator door is opened and closed, and the compressor is forcibly operated for a specific time at the predetermined rotational frequency after the termination of the refrigerator door opening state, whereby the temperature rise inside of the refrigerator is inhibited, and the bad influence on the food in the refrigerator can be reduced. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a refrigerator provided with a compressor for variable speed control of the motor rotation number effective for internal temperature management.

In recent years, variable speed control of a compressor using an inverter has been studied as means for improving the operation efficiency of a refrigerator. (For example, see Patent Document 1)
Hereinafter, a conventional refrigerator control device will be described with reference to the drawings.

FIG. 3 is a block diagram of a conventional refrigerator control device. Reference numeral 1 denotes a compressor rotational speed control circuit. The compressor rotational speed control circuit 1 is composed of an AC power source 2, a rectifier circuit 3, and an inverter control circuit 5 including a switching element 4 including a switching transistor and a reflux diode. Yes. By changing the output frequency of the inverter control circuit 5, the motor of the compressor is controlled at a variable speed. The compressor variable speed control circuit 1 functions on the basis of detection signals from the internal temperature detection means 6 and the internal set temperature detection means 7 and allows the rotation speed of the compressor to be adjusted so that the internal temperature approaches the set temperature. Shift control is performed. 8 is a door opening / closing detection means provided independently of the compressor rotation speed control circuit 1, and 9 is an internal fan control means for rotating or stopping the internal fan 10 according to a signal from the door opening / closing detection means 8. is there.
Japanese Patent Application Laid-Open No. 60-140081

  However, in the compressor speed control as described above, particularly when the refrigerator door is opened and closed, warm air from outside the chamber flows in to increase the internal temperature, and the internal temperature is detected to detect the compressor. However, depending on the form and mounting position of the internal temperature detection means, it takes time until the internal temperature is uniformly stabilized at a predetermined temperature, which adversely affects foods being stored. There is a fear.

  The purpose of the present invention is to perform variable speed control of the compressor of the refrigerator by the inverter, particularly when the refrigerator door is opened and closed, according to the opening and closing angle and opening time of the refrigerator door at that time. To provide a control method that, after completion, forcibly operates the compressor at a predetermined number of revolutions for a certain period of time, thereby suppressing temperature rise in the refrigerator and reducing adverse effects on food in the refrigerator. is there.

  In order to solve the above-described problems, the refrigerator of the present invention includes a compressor rotation speed control means for variable speed control of the rotation speed of a compressor driving motor of the refrigerator, and a door opening / closing detection of an opening / closing state and an opening / closing angle of the refrigerator door. An angle detecting means, a door opening / closing angle determining means for comparing the opening / closing angle of the refrigerator door with a predetermined opening / closing angle, a door opening time integrating means for integrating the elapsed time of the door opening state, and the elapsed time of the door opening state. Comprising door opening time determining means for comparing with the elapsed time of a predetermined door open state, when the refrigerator door is opened and closed, determining the opening and closing angle and open state elapsed time of the refrigerator door at that time, After the refrigerator door is opened, the compressor is forcibly operated at a predetermined number of revolutions for a certain period of time, thereby suppressing temperature rise in the refrigerator and food in the refrigerator. Adverse effects Less to.

  According to the refrigerator of the present invention, a temperature rise due to opening and closing of the refrigerator door can be more reliably suppressed, and adverse effects on food in the warehouse can be reduced.

  The refrigerator invention according to claim 1 is a compressor rotation speed control means for variable speed control of the rotation speed of a compressor driving motor of the refrigerator, and a door opening / closing angle detection for detecting an opening / closing state and an opening / closing angle of the refrigerator door. Means, door opening / closing angle determining means for comparing the opening / closing angle of the refrigerator door with a predetermined opening / closing angle, door opening time integrating means for integrating the elapsed time of the door opening state, and the elapsed time of the door opening state are determined in advance. Door opening time determination means for comparing with the elapsed time of the opened door state, and when the refrigerator door is opened and closed, the opening angle of the refrigerator door and the opened state elapsed time at that time are determined, and the refrigerator door After the open state of the refrigerator, the compressor is forcibly operated at a predetermined rotation speed for a certain period of time, thereby suppressing the temperature rise in the refrigerator to food in the refrigerator Reduce the negative effects of .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, about the same structure as the past, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted. Further, the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a block diagram of a refrigerator according to an embodiment of the present invention. FIG. 2 is a flowchart showing the operation of the embodiment. In FIG. 1, reference numeral 11 denotes a door opening / closing angle detecting means, which is composed of, for example, a volume resistor linked with the rotation of the door hinge. 12 is a door opening / closing angle determination means for comparing the refrigerator door opening / closing angle with a predetermined door opening / closing angle. Reference numeral 13 denotes a door open time count timer that integrates the elapsed time of the refrigerator door open state. Reference numeral 14 denotes door opening time determination means for comparing the elapsed time in the refrigerator door open state with a predetermined elapsed time in the refrigerator door open state. Reference numeral 15 denotes compressor rotation speed control means, which is constituted by, for example, an inverter circuit.

  The operation of the embodiment of the present invention configured as described above will be described with reference to the flowchart of FIG.

  First, in step 1, the door opening / closing angle detection means detects the door opening / closing angle (= D), and in step 2, it is determined whether the door opening / closing angle D is 0 degrees to determine whether the door is opened. . At this time, if the door opening / closing angle D ≠ 0 degree, it is determined that the door has been opened, and the door opening time (= T) count timer is started in step 3. When the door opening / closing angle D is 0 degree, the normal operation is continued as it is, and the door opening / closing angle is continuously read. Next, in step 4, it is determined whether or not the door opening / closing angle D is larger than a predetermined door opening / closing angle D1, and the process branches when D> D1 and D <D1. Next, in step 5, it is determined whether or not the door opening / closing angle D is 0 degree. If the door opening / closing angle D = 0, it is determined that the door is closed. In step 6, the door opening time count timer is set. Stop. If the door opening / closing angle D is not 0, it is determined that the door remains open, and the counting of the door opening time is continued. Next, in step 7, it is determined whether or not the counted door opening time T is longer than a predetermined door opening time T1, and the process branches when T> T1 and T <T1. Next, in step 8, the compressor is forcibly operated for a certain period of time at a predetermined number of revolutions in each of T> T1 and T <T1. Next, in step 9, the door opening time count timer is reset, and the process returns to step 1. As for step 4, the same control is performed from step 5 onward in both cases of D> D1 and D <D1, and the compressor forced operation mode in step 8 is executed at a predetermined rotational speed.

  The refrigerator control device configured as described above can detect the opening / closing angle and opening time of the refrigerator door, thereby forcibly operating the compressor, thereby suppressing an increase in the internal temperature due to the door opening / closing. .

  As described above, the refrigerator according to the present invention can more reliably suppress the temperature rise due to opening and closing of the refrigerator door, and can reduce adverse effects on food in the refrigerator. This is useful for ensuring the cooling reliability of the refrigerator and other cooling devices provided.

The block diagram which shows the structure of the control apparatus of the refrigerator of Embodiment 1 by this invention. The flowchart which shows the control action of the refrigerator of the embodiment The block diagram which shows the structure of the control apparatus of the refrigerator of a prior art example

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Door opening / closing angle detection means 12 Door opening / closing angle determination means 13 Door opening time count timer 14 Door opening time determination means 15 Compressor rotation speed control means

Claims (1)

Compressor rotation speed control means for variable speed control of the rotation speed of the motor for driving the compressor of the refrigerator, door opening / closing angle detection means for detecting the opening / closing state and opening / closing angle of the refrigerator door, and the opening / closing angle of the refrigerator door are predetermined. A door opening / closing angle determining means for comparing with the opened / closed angle, a door opening time integrating means for integrating the elapsed time of the door open state, and comparing the elapsed time of the door open state with a predetermined elapsed time of the door open state. When the refrigerator door is opened / closed, the opening / closing angle of the refrigerator door and the open state elapsed time are determined, and after the refrigerator door is opened, the compressor rotation speed is provided. A refrigerator that is forcibly operated at a predetermined number of revolutions for a certain period of time.

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