JP2005201517A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control device for suppressing the rise of a temperature in a refrigerator particularly in the open state of a refrigerator door which requires a cooling load in mounting the control device for a refrigerator internal fan to the refrigerator. <P>SOLUTION: This refrigerator comprises a refrigerator internal fan rotating speed control means 16 for performing the variable speed control of the rotating speed of a refrigerator internal fan motor 17 of the refrigerator; a door opening/closing angle detecting means 11 for detecting the opening/closing state and the opening/closing angle of the refrigerator door; and a door opening/closing angle determining means 12 for comparing the opening/closing angle of the refrigerator door with a predetermined opening/closing angle. When the refrigerator door is opened/closed, the opening/closing angle of the refrigerator at that time is determined, and after the open state of the refrigerator door is completed, the refrigerator internal fan is forcibly operated at the predetermined rotating speed for a predetermined time. A temperature rise in the refrigerator is thereby suppressed to reduce a harmful effect on food or the like in the refrigerator. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a refrigerator provided with an internal fan that controls the rotational speed of a fan motor effective for internal temperature management at a variable speed.

In recent years, refrigerator fans have been controlled in accordance with the opening / closing of the refrigerator door in order to suppress an increase in the internal temperature due to the opening / closing of the refrigerator door. (For example, see Patent Document 1)
Hereinafter, a conventional refrigerator control device will be described with reference to the drawings.

FIG. 5 is a block diagram of a conventional refrigerator control device. The compressor rotational speed control circuit 201 includes an AC power source 202, a rectifier circuit 203, and an inverter control circuit 205 including a switching element 204 including a switching transistor and a reflux diode. By changing the output frequency of the inverter control circuit 205, the motor of the compressor is controlled at a variable speed. The compressor variable speed control circuit 201 functions based on the detection signals of the internal temperature detection means 206 and the internal set temperature detection means 207, and allows the compressor speed to be adjusted so that the internal temperature approaches the set temperature. Shift control is performed. Door opening / closing detection means 208 is means for detecting opening / closing of the refrigerator door. The internal fan control means 209 is an internal fan control means for rotating or stopping the internal fan 210 in response to a signal from the door opening / closing detection means 8.
Japanese Patent Laid-Open No. 9-4959

  However, in the above-described conventional configuration, in the control of the internal fan 210, particularly when the refrigerator door is opened, warm air from the outside flows in and raises the internal temperature. The internal fan 210 is controlled so as to quickly return the internal temperature, but since the input signal to the internal fan control means 209 is the door open / close detection means 208, it matches the inflow amount of warm air according to the door open / close angle. The internal fan 210 could not be controlled, and it took time to recover the internal temperature, which could adversely affect the food being stored.

  The object of the present invention is to control the fan in the refrigerator, particularly when the refrigerator door is opened and closed, depending on the opening angle of the refrigerator door and the opening time at that time, after the refrigerator door is opened, A control method that suppresses the temperature rise in the refrigerator and reduces adverse effects on food in the refrigerator by forcibly operating the fan motor at a predetermined speed for a predetermined time. It is to provide.

  In order to solve the above-described problems, the refrigerator of the present invention includes an internal fan rotational speed control means for variable speed control of the rotational speed of the internal fan motor, and a door open / close angle detection means for detecting the open / close state and open / close angle of the refrigerator door. And a door opening / closing angle determining means for comparing the opening / closing angle of the refrigerator door with a predetermined opening / closing angle. When the refrigerator door is opened / closed, the opening / closing angle of the refrigerator door at that time is determined, After the door is opened, the refrigerator is configured to forcibly operate at a predetermined number of rotations of the internal fan for a predetermined time, thereby suppressing temperature rise in the refrigerator. Reduce adverse effects on food in the storage.

  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 invention of the refrigerator according to claim 1, the internal fan rotational speed control means for variable speed control of the rotational speed of the internal fan motor, the door open / close angle detection means for detecting the open / close state and open / close angle of the refrigerator door, It comprises door opening / closing angle determination means for comparing the opening / closing angle of the refrigerator door with a predetermined opening / closing angle, and when the opening / closing of the refrigerator door is performed, the opening / closing angle of the refrigerator door at that time is determined, After the open state, the refrigerator is configured to forcibly operate at a predetermined rotation speed for a predetermined time after the rotation of the internal fan, thereby suppressing the temperature rise in the refrigerator. Reduce adverse effects on food.

  The invention according to claim 2 is the invention according to claim 1, further comprising door opening time integration means for adding up the elapsed time of the door open state, and the door open state elapsed time in a predetermined door open state. A door opening time determining means for comparing with an elapsed time is provided, and when the refrigerator door is opened and closed, an opening angle of the refrigerator door and an opening state elapsed time at that time are determined, and the refrigerator door is opened. After completion, the compressor is forcibly operated at a predetermined number of revolutions for a certain period of time, thereby suppressing the temperature rise in the refrigerator and adversely affecting foods in the refrigerator. Reduce.

  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 internal fan control means according to Embodiment 1 of the present invention. FIG. 2 is a flowchart showing the operation of the embodiment. In FIG. 1, the door opening / closing angle detection means 11 is constituted by, for example, a volume resistor linked with the rotation of the door hinge. The door opening / closing angle determination means 12 compares the refrigerator door opening / closing angle with a predetermined door opening / closing angle, and is configured by software of the refrigerator control microcomputer 13, for example. The internal fan rotational speed control means 14 controls the rotational speed of the internal fan, and is composed of, for example, a variable voltage power supply circuit. Reference numeral 15 denotes an internal fan, which is constituted by a DC motor, for example.

  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 101, the door opening / closing angle detection means 11 detects the door opening / closing angle (= D), and in step 102, it is determined whether the door opening / closing angle D is 0 degrees to determine whether the door has been opened. To do. At this time, if the door opening / closing angle D ≠ 0 degrees, it is determined that the door has been opened. 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 103, 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 104, 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 105, D> D1 and D <In each case of D1, the internal fan motor 17 is forcibly operated at a predetermined rotation speed for a predetermined time. Next, the process returns to step 101.

  In the refrigerator control device configured as described above, the opening / closing angle of the refrigerator door is detected, and the internal fan 17 is forcibly operated, thereby suppressing the increase in the internal temperature due to the door opening / closing.

(Embodiment 2)
FIG. 3 is a block diagram of the refrigerator internal fan control means according to the second embodiment of the present invention. FIG. 4 is a flowchart showing the operation of the embodiment. In FIG. 3, the door opening time count timer 16 accumulates the elapsed time of the refrigerator door open state, and is configured by software of the refrigerator control microcomputer 13, for example. The door opening time determination means 17 compares the elapsed time in the refrigerator door open state with a predetermined elapsed time in the refrigerator door open state, and is configured by software of the refrigerator control microcomputer 13, for example.

  In the present embodiment, the refrigerator according to the first embodiment is further provided with a door opening time count timer 16 and a door opening time determination means 17.

  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 101, the door opening / closing angle detection means 11 detects the door opening / closing angle (= D), and in step 102, it is determined whether the door opening / closing angle D is 0 degrees to determine whether the door has been opened. To do. 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 111. 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 103, 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 104, 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 112, 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 113, 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 114, the internal fan motor 17 is forcibly operated at a predetermined rotational speed for a predetermined time in each of T> T1 and T <T1. Next, in step 106, the door opening time count timer 14 is cleared, and the process returns to step 1. In step 103, the same control is performed from step 104 onward in both cases of D> D1 and D <D1, and the internal fan operation mode in step 114 is set to a predetermined number of revolutions and a predetermined time. Is executed.

  The refrigerator control device configured as described above detects the opening / closing angle and opening time of the refrigerator door, thereby forcibly operating the internal fan 17 to suppress an increase in the internal temperature due to the door opening / closing. Can do.

  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 be widely applied to forced convection cooling type cooling devices.

The block diagram which shows the structure of the control apparatus of the refrigerator internal fan of Embodiment 1 by this invention. The flowchart which shows the control operation of the fan in the refrigerator of the same embodiment The block diagram which shows the structure of the control apparatus of the refrigerator internal fan of Embodiment 2 by this invention. The flowchart which shows the control operation of the fan in the refrigerator of the same 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 Refrigerator control microcomputer 14 Door opening time count timer 15 Door opening time determination means 16 Inner fan rotation speed control means 17 Inner fan (motor)

Claims (2)

The internal fan rotation speed control means for variable speed control of the internal fan motor speed of the refrigerator, the door open / close angle detection means for detecting the open / close state and open / close angle of the refrigerator door, and the open / close angle of the refrigerator door are predetermined. Door opening / closing angle determination means for comparing with the opening / closing angle, and when the refrigerator door is opened / closed, the opening / closing angle of the refrigerator door at that time is determined, and after the refrigerator door is opened, the internal fan motor A refrigerator that is forcibly operated for a predetermined time at a predetermined rotation number. A door opening time integrating means for adding up the elapsed time of the door open state of the refrigerator door; and a door opening time determining means for comparing the elapsed time of the door open state with a predetermined elapsed time of the door open state. When the opening / closing of the refrigerator door is performed, the opening / closing angle of the refrigerator door and the opening state elapsed time are determined, and after the opening state of the refrigerator door, the number of rotations of the internal fan motor is set in advance at a predetermined number of rotations. The refrigerator according to claim 1, wherein the refrigerator is forcibly operated for a predetermined time.

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