KR100751435B1 - Cooling apparatus for changing temperature in refrigerator, and method for controlling temperature thereof - Google Patents

Abstract

A cooling apparatus for changing temperature in a refrigerator and a temperature control method thereof are provided to control the temperature of a conversion room in a storage compartment by forced convection without influencing flow of cool air of the storage compartment, by controlling the temperature of the conversion according to opening and shutting of a damper and operation of a blower unit. A duct has a plurality of discharge ports(21) to discharge cool air into a storage compartment storing food. A conversion room(40) is formed in the storage compartment and connected with at least one of the discharge ports, and maintains the inside at a set temperature. A damper(70) controls the discharge amount of cool air supplied to the conversion room from the connected discharge port. A blower unit(80) circulates cool air supplied from the discharge port connected with the conversion room. An input key is formed at an outer surface of the conversion room to select the inner temperature of the conversion room. A temperature sensor(90) detects the inner temperature of the conversion room. A main blower unit is installed in the storage compartment. A control unit receives temperature information from the temperature sensor, compares the temperature set through the input key and outputs the result, and makes the inside of the conversion room maintain the set temperature by controlling on and off of the damper and the blower unit according to the on and off of the main blower unit.

Description

Cooling apparatus for changing temperature in refrigerator, and method for controlling temperature

1 is a front view of a typical double door refrigerator,

2 is a front view showing the position of the switching room in the temperature conversion cooling device for a refrigerator according to the present invention,

3 is a block diagram showing the principle of the temperature conversion cooling device for a refrigerator according to the present invention,

Figure 4 is a block diagram showing the electrical connection of the temperature conversion cooling device for a refrigerator according to the present invention,

5 is a flowchart illustrating a temperature control method of a temperature switching cooling device for a refrigerator according to the present invention,

FIG. 6 is a flowchart illustrating 'A' of FIG. 5.

Explanation of symbols on the main parts of the drawing

10; Main body 11; storeroom

20; Duct 21; Outlet

30; Main blower unit 40; Transition room

41; Inlet 42 of the conversion room; Outlet of the conversion room

50; Input key 51; Time setting key

60; A controller 70; Damper

80; Blower unit 90; Temperature sensor

The present invention relates to a temperature switching cooling device for a refrigerator and a temperature control method thereof.

In general, a refrigerator includes a main body in which a storage compartment such as a freezing compartment or a refrigerating compartment is formed, a refrigerating apparatus provided in the main body to generate cold air, and a door that opens and closes an opening of the storage compartment.

Conventional refrigeration equipment is to use a method for generating cold air mainly by a refrigeration cycle consisting of a compressor and an evaporator, where the refrigeration cycle is a compressor for compressing the refrigerant in the gas state at high temperature and high pressure, and the gas state compressed from the compressor A condenser that condenses the refrigerant into a liquid state, a capillary tube that converts the liquefied refrigerant into a low temperature low pressure state, and an evaporator that cools the surrounding air by absorbing latent heat of evaporation to vaporize the refrigerant liquefied from the capillary to low temperature low pressure. do.

1 is a scene diagram of a general double door refrigerator.

As shown in FIG. 1, the conventional double door refrigerator 101 includes a main body 110 forming the storage compartment 111, a door 102 rotating and opening and closing an opening provided in front of the storage compartment 111, and a main body ( A refrigeration apparatus (not shown) provided in the 110 to generate cold air, a duct 120 provided in the up and down direction in the main body 110 to supply cold air to the storage compartment 111, and provided in the upper portion of the duct 120 to freeze. It has a main blower unit 130 for sending the cool air generated from the device to the duct 120.

The duct 120 is provided in a vertical direction on the rear wall of the storage chamber 111 to serve as a transfer path of cold air generated from the freezing device, and provides a plurality of discharge holes 121 formed therethrough so that the cold air can be supplied to the storage chamber 111. Include.

The main blower unit 130 is provided on the upper portion of the duct 120 to deliver the cool air generated from the freezing device to the duct 120.

Accordingly, the conventional refrigerator 101 may send the cool air generated from the freezing device to the duct 120 by the main blower unit 130, and the cool air sent to the duct 120 may discharge the discharge port 121. It is supplied to the storage compartment 111 through.

However, the conventional refrigerator 101 is supplied to the storage compartment 111 through the discharge port 121, the cold air sent to the duct 120, so that the entire interior of the storage compartment 111 maintains almost the same temperature, the storage compartment 111 There is no separate space to accommodate storage that requires a much cooler temperature than the average temperature inside, so consumers are in desperate need of this space.

In particular, there is an urgent need for using a part of the refrigerating compartment in the storage compartment 111 of the refrigerator 101 as a use such as a freezing compartment or a space having a slightly lower temperature.

The present invention has been made to solve the above problems, and provided with a separate switching room that can maintain a cooler temperature than the inside of the refrigerating chamber in the storage compartment, and the set temperature of the switching room is damper, main blower unit, blower It is a first object of the present invention to provide a temperature conversion cooling device for a refrigerator, which allows control by forced convection through on / off of a unit.

In addition, a second object of the present invention is to provide a control method of controlling the temperature of the switching room by efficiently controlling whether the damper, the main blower unit, and the blower unit are turned on or off so as to efficiently operate the above-described refrigerator for temperature switching cooling device. .

According to an aspect of the present invention for achieving the above-mentioned first object, a duct having a plurality of discharge ports to discharge cold air into a storage chamber for storing a predetermined food; A switching room provided inside the storage compartment and provided to communicate with at least one of the outlets of the duct, the switching room configured to maintain the interior according to a predetermined temperature; A damper for adjusting a discharge amount of cold air supplied to the switching room from the discharge port communicated with the switching room; A blower unit for circulating cold air supplied from a discharge port communicated with the switching room; An input key provided on an outer surface of the switching room to select the temperature inside the switching room; A temperature sensor for detecting an internal temperature of the switching room; A main blower unit provided in the storage compartment; And receiving temperature information from the temperature sensor and comparing the temperature with a preset temperature set value through the input key to calculate a result, and turning on / off the damper and the blower unit according to whether the main blower unit is turned on or off. It provides a refrigerator temperature switching cooling apparatus including a control unit for controlling the on / off to maintain the inside of the switching room to a predetermined temperature.

The changeover room has an inlet to allow cold air discharged from the discharge port to be introduced into the damper according to whether the damper is opened or closed, and an outlet to be discharged to the storage chamber according to whether the blower unit is operated.

The switching room is made of a drawer type.

The damper is provided at the discharge port, or a damper is provided at the inlet.

A blower unit is provided at the outlet, or a blower unit is provided in the storage compartment adjacent to the outlet of the conversion room.

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When the temperature information is higher than the temperature set value, the controller controls to turn on the damper and turn on the blower unit when the main blower unit is in an on state, and when the main blower unit is in an off state. The blower unit is controlled to be turned on at the same time as the damper is turned on, and when the temperature information is lower than the temperature set value, the blower unit is controlled to be turned off at the same time as the damper is turned off.

The apparatus further includes a plurality of time setting keys provided on an outer surface of the switching room to select the internal temperature of the switching room, wherein the controller is further configured to control the damper and the blower when a signal corresponding to the medicine is input from the time setting key. The unit is controlled to be turned off at the same time, and when the signal corresponding to the medium or the river is input from the time setting key, the unit is controlled to turn on the damper and the blower unit at the same time. The damper and the blower unit may be turned off when the set time value is compared with each other and the signal corresponding to the middle or steel exceeds the predetermined time value.

According to an aspect of the present invention for achieving the second object, a temperature control method in a temperature switching cooling device for a refrigerator, comprising: a first step of determining whether an error of a temperature sensor; A second step of determining whether the temperature inside the switching room is equal to or greater than a preset temperature set value; Determining whether the main blower unit of the refrigerator storage room is in an on or off state; A fourth step of controlling on or off of the damper and the blower unit; A fifth step of determining whether an internal temperature of the switching room is equal to or less than a preset temperature set value; And a sixth step of controlling the damper and the blower unit to be turned off at the same time if the internal temperature of the switching room is equal to or less than a predetermined temperature setting value.

In the fifth step, if the internal temperature of the switching room is not lower than or equal to a predetermined temperature set value, it is again determined whether the main blower unit of the refrigerator storage room is on or off.

A seventh step of inputting a desired signal with a time setting key if it is determined that an error has occurred in the temperature sensor in the first step; An eighth step of controlling on or off of the damper and the blower unit; And comparing the signal corresponding to the time setting key with a preset time value to determine whether the corresponding signal exceeds a preset time value. If the corresponding signal exceeds the preset time value, the damper and blower unit are turned off. And a ninth step of controlling to make it.

In the eighth step, when the corresponding signal is weakly input from the time setting key, step 8-1 of controlling to turn off the damper and the blower unit at the same time; Or step 8-2 in which the damper and the blower unit are controlled to be turned on at the same time when the steel is inputted into the steel.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of a temperature switching cooling device for a refrigerator according to the present invention and a temperature control method thereof.

2 is a front view showing the position of the switching room in the temperature conversion cooling device for a refrigerator according to the present invention, Figure 3 is a block diagram showing the principle of the temperature conversion cooling device for a refrigerator according to the present invention, Figure 4 Block diagram showing the electrical connection of the temperature conversion cooling device for a refrigerator according to the invention.

2 and 3, the temperature conversion cooling apparatus for a refrigerator according to the present invention includes a duct 20, the switching room 40, a damper 70, and a blower unit 80.

First, the duct 20 has a plurality of discharge ports 21 to discharge cold air into the storage chamber 11 storing predetermined food. In the present invention, the storage chamber 11 is preferably a refrigerating chamber.

The duct 20 is provided in the main body 10 in the vertical direction to supply cold air to the storage chamber 11.

And the duct 20 is provided on the rear wall of the storage chamber 11 in the vertical direction to serve as a transfer path of the cold air generated from the freezing device, a plurality of discharge ports 21 formed through the cold air can be supplied to the storage chamber (11). Has

The changeover room 40 is provided inside the storage compartment 11.

In addition, the switching room 40 is provided to be in communication with at least one of the outlets 21 of the duct 20, so that the interior is maintained according to a predetermined temperature.

The discharge port 21 communicating with the switching room 40 is preferably located at the bottom of the storage chamber 11.

In the embodiment, the switching room 40 has an inlet 41 so that the cold air discharged from the discharge port 21 flows in according to whether the damper 70 is opened or closed, and the storage compartment according to whether the blower unit 80 is operated. It has the outlet 42 so that it may flow out to 11.

This switching room 40 is made of a drawer type.

However, the switching room 40 may apply another opening and closing method as needed.

The damper 70 adjusts the discharge amount of the cold air supplied to the switching room 40 from the discharge port 41 communicating with the switching room 40.

In an embodiment, the damper 70 is provided at the outlet 21 of the duct 20.

However, the damper 70 may be provided at the inlet 41 of the switching room 40 as needed.

It is preferable that this damper 70 is an electronic damper.

The interior of the switching room 40 may be maintained according to a predetermined temperature depending on whether the damper 70 is opened or closed.

The blower unit 80 circulates the cold air supplied from the discharge port 21 in communication with the switching room 40.

In an embodiment, the blower unit 80 is provided inside the storage compartment 11 adjacent to the outlet 42 of the conversion room 40.

However, if necessary, the blower unit 80 may be provided at the outlet 42 of the switching room 40.

The interior of the switching room 40 may be maintained according to a predetermined temperature depending on whether the blower unit 80 is operated.

The temperature switching cooling apparatus for a refrigerator according to the present invention further includes an input key 50, a temperature sensor 90, a main blower unit 30, and a controller 60.

First, an input key 50 is provided on the outer surface of the switching room 40 to select the temperature inside the switching room 40, and the temperature sensor 90 detects the internal temperature of the switching room 40.

This input key 50 is provided at the lower edge of the switching room 40 in FIG. 2 and is formed as one in the drawing, but may be formed in plural as necessary.

The main blower unit 30 is provided in the storage compartment 11.

This main blower unit 30 is provided in the upper part of the duct 20 in order to deliver the cool air generated from the freezer to the duct 20 in FIG.

Accordingly, the refrigerator 1 may send the cool air generated from the freezing device to the duct 20 by the main blower unit 30, and the cool air sent to the duct 20 is thus stored in the storage compartment through the discharge port 21. Supplied to (11).

The control unit 60 receives the temperature information from the temperature sensor 90 and calculates the result by comparing with the preset temperature set value through the input key 50, and the damper according to whether the main blower unit 30 is on or off The on / off of the 70 and the on / off of the blower unit 80 are controlled so that the inside of the switching room 40 maintains a preset temperature.

The controller 60 turns on the damper 70 when the main blower unit 30 is on when the temperature information provided from the temperature sensor 90 is higher than a preset temperature set value through the input key 50. At the same time, the blower unit 80 is controlled to be turned on.

If the main blower unit 30 is in the off state, the controller 60 controls the damper 70 to be turned on and the blower unit 80 to be turned off.

On the other hand, the controller 60 turns off the damper 70 and simultaneously turns off the blower unit 80 when the temperature information provided from the temperature sensor 90 is lower than the preset temperature set value through the input key 50. Control to turn off.

The present invention further includes a plurality of time setting keys 51 provided on the outer surface of the switching room 40 to select the temperature inside the switching room 40.

The time setting key 51 is composed of keys corresponding to weak, medium, and steel on the outer surface of the switching room 40.

The controller 60 controls the damper 70 and the blower unit 80 to be turned off at the same time when a signal corresponding to the medicine is input from the time setting key 51.

The control unit 60 controls the damper 70 and the blower unit 80 to be turned on at the same time when the signal corresponding to the middle or the river is input from the time setting key 51, but the signal corresponding to the middle or the river is controlled. And the predetermined time value is compared with each other to control the damper 70 and the blower unit 80 to be turned off if the signal corresponding to the medium or steel exceeds the predetermined time value.

However, the controller 60 controls the damper 70 and the blower unit 80 to be turned on if the signal corresponding to the medium or the river does not exceed a preset time value.

5 is a flowchart illustrating a temperature control method of a temperature conversion cooling apparatus for a refrigerator according to the present invention, and FIG. 6 is a flowchart illustrating 'A' of FIG. 5.

As shown in FIG. 5, the temperature control method in the temperature conversion cooling device for a refrigerator according to the present invention includes first to sixth steps.

That is, in the first step, it is determined whether an error of the temperature sensor is detected (S10). In the second step, it is determined whether the temperature inside the switching room is greater than or equal to a preset temperature set value (S20). It is determined whether the blower unit is in an on or off state (S30). In the fourth step, the damper and the blower unit are controlled on or off (S41 to S44). In the fifth step, the internal temperature of the switching room is a preset temperature set value. It is determined whether or not (S50), and in the sixth step, if the internal temperature of the switching room is less than the predetermined temperature set value, the damper and the blower unit are controlled to be turned off at the same time (S61, S62).

In the fifth step, if the internal temperature of the switching room is not lower than or equal to a predetermined temperature setting value, it is preferable to proceed to the third step of determining again whether the main blower unit of the refrigerator storage room is on or off (S30).

On the other hand, if it is determined that an error occurs in the temperature sensor in the first step (S10), as shown in Figure 6 further comprises a seventh to nineth step.

That is, in step 7, a desired time signal is input using the time setting key (S70), and in step 8, the damper and the blower unit are controlled on or off (S81 to S84).

This eighth step further includes steps 8-1 and 8-2 when a corresponding signal is input from the time setting key as weak (S71).

In step 8-1, the damper and blower unit are controlled to be turned off at the same time (S81, S82). In step 8-2, when the corresponding signal is input to medium or strong from the time setting key (S72, S73), The damper and the blower unit are controlled to be turned on at the same time (S83, S84).

In the ninth step, it is determined whether the corresponding signal exceeds the preset time value by comparing the signal corresponding to the time setting key with a preset time value. If the corresponding signal exceeds the preset time value, the damper and blower unit are determined. Control to turn off (S91 to S93).

That is, when the corresponding signal is input to medium or strong from the time setting key (S72, S73), the signal corresponding to medium or strong and the preset time value are compared with each other, and the time corresponding to the medium or strong is preset. Is exceeded (S91), it is controlled to turn off the damper and blower unit (S92, S93). However, if the signal corresponding to the medium or steel does not exceed the predetermined time value, the damper and the blower unit are controlled to be turned on (S83 and S84).

The temperature switching cooling device for a refrigerator according to the present invention and the temperature control method thereof further include a damper for adjusting the discharge amount of the cold air supplied to the switching room from the discharge port of the duct communicated with the switching room, the duct of the duct communicating with the switching room. A blower unit is further provided to circulate the cold air supplied from the discharge port, and the inside of the switching room is maintained according to a predetermined temperature according to whether the damper is opened and closed, and thus the temperature of the switching room is forced. By controlling convection, the inside of the switching ROM can be quickly cooled down to the set temperature, and even if the temperature of the switching room is controlled by convection, it hardly affects the cold air flow inside the storage compartment. In particular, there is an excellent effect that the temperature deviation does not occur.

Claims (12)

A duct having a plurality of discharge ports to discharge cold air into a storage chamber for storing predetermined foods; A switching room provided inside the storage compartment and provided to communicate with at least one of the outlets of the duct, the switching room configured to maintain the interior according to a predetermined temperature; A damper for adjusting a discharge amount of cold air supplied to the switching room from the discharge port communicated with the switching room; A blower unit for circulating cold air supplied from a discharge port communicated with the switching room; An input key provided on an outer surface of the switching room to select the temperature inside the switching room; A temperature sensor for detecting an internal temperature of the switching room; A main blower unit provided in the storage compartment; And The temperature information is received from the temperature sensor and the result is compared with a preset temperature set value through the input key, and a result is calculated. The damper is turned on and off and the blower unit is turned on depending on whether the main blower unit is turned on or off. And a control unit for controlling the on / off to maintain the inside of the switching room at a predetermined temperature. The method of claim 1, The conversion room, the temperature conversion for the refrigerator comprising an inlet port so that the cold air discharged from the discharge port is introduced into the interior according to the opening and closing of the damper, and has an outlet port to flow out to the storage chamber according to whether the blower unit is operated. Cooling device. The method of claim 2, The switching room is a temperature conversion cooling device for a refrigerator comprising a drawer type. The method of claim 2, The damper is provided in the discharge port, or a temperature conversion cooling device for a refrigerator comprising a damper provided in the inlet. The method of claim 2, And a blower unit is provided at the outlet, or a blower unit is provided inside the storage compartment adjacent to the outlet of the conversion room. delete The method of claim 1, The control unit, When the temperature information is higher than the temperature set value, if the main blower unit is in the on state, the damper is turned on and the blower unit is turned on at the same time, and if the main blower unit is in the off state, the damper is turned on. And control to turn off the blower unit at the same time, And when the temperature information is lower than the temperature set value, controlling to turn off the blower unit and to turn off the blower unit. The method of claim 1, And a plurality of time setting keys provided on an outer surface of the switching room to select the temperature inside the switching room. The control unit controls to turn off the damper and the blower unit simultaneously when a signal corresponding to the medicine is input from the time setting key. When a signal corresponding to medium or strong is inputted from the time setting key, the damper and the blower unit are controlled to be turned on at the same time, but the signal corresponding to the medium or strong is compared with a predetermined time value, and the medium or And turning off the damper and the blower unit if the signal corresponding to the river exceeds the predetermined time value. As a temperature control method in a temperature conversion cooling device for a refrigerator, A first step of determining whether an error of the temperature sensor; A second step of determining whether the temperature inside the switching room is equal to or greater than a preset temperature set value; Determining whether the main blower unit of the refrigerator storage room is in an on or off state; A fourth step of controlling on or off of the damper and the blower unit; A fifth step of determining whether an internal temperature of the switching room is equal to or less than a preset temperature set value; And And a sixth step of controlling the damper and the blower unit to be turned off at the same time if the internal temperature of the switching room is equal to or less than a predetermined temperature setting value. The method of claim 9, And determining whether the main blower unit of the refrigerator storage room is on or off again if the internal temperature of the switching room is not equal to or lower than a predetermined temperature setting value in the fifth step. The method of claim 9, If it is determined that an error occurs in the temperature sensor in the first step, A seventh step of inputting a desired signal with a time setting key; An eighth step of controlling on or off of the damper and the blower unit; And By comparing the signal corresponding to the time setting key with a predetermined time value, it is determined whether the corresponding signal exceeds a predetermined time value. The temperature control method of the temperature conversion cooling device for a refrigerator further comprising a ninth step of controlling. The method of claim 11, The eighth step, A step 8-1 of controlling the damper and the blower unit to be turned off at the same time when a corresponding signal is input from the time setting key as weak; And a step (8-2) of controlling the damper and the blower unit to be turned on at the same time when the corresponding signal is input to the medium or the strong from the time setting key.

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