KR20090071242A - Micro wave oven having refrigeration cycle - Google Patents

Abstract

A microwave oven with cooling cycle is provided to guarantee safety of a user who takes out the food because the temperature of the food whereof cooking is completed can be lowered to the appropriate temperature. A microwave oven with cooling cycle comprises a cavity(112) and an electric field chamber(104) which are formed in a cabinet(100) with an inner case(110), a magnetron(106) which is installed in the electric field chamber and irradiates microwave, a compressor(120) in which refrigerant is compacted at a high pressure and high temperature by the microwave irradiated from the magnetron, a condenser(130) wherein the refrigerant supplied from the compressor is transformed to the low-temperature high-pressure, an expansion valve(140) wherein the refrigerant supplied from the condenser is transformed to low temperature and low pressure, and an evaporator(150) wherein the refrigerant supplied from the expansion valve is heat-exchanged with the external air.

Description

Microwave oven with refrigeration cycle {MICRO WAVE OVEN HAVING REFRIGERATION CYCLE}

The present invention relates to a microwave oven, and more particularly, to a microwave oven having a refrigeration cycle capable of cooling food.

In general, a microwave oven is a cooking apparatus capable of cooking food using microwaves in a short time, and microwaves generated from a magnetron to which high voltage is applied are irradiated into the food inside the cooking chamber through a waveguide. By vibrating the water molecules contained in the food to generate thermal energy, the food is heated and cooked therein.

These microwave ovens can cook a variety of foods in a variety of ways by appropriately adjusting the microwave output and the time the microwaves are irradiated to the food, and also to heat the already cooked food or to melt frozen foods. Can be used.

1 is a perspective view showing a microwave oven according to the prior art, Figure 2 is a cross-sectional view showing a microwave oven according to the prior art.

Referring to FIG. 1, the microwave oven includes a cabinet 10 having a cooking chamber 10a having an open front in the inside thereof, an outer panel 20 and a cooking chamber 10a installed to surround the outside of the cabinet 10. The door 30 for opening and closing the open front of the, and the operation panel 40 for setting various cooking conditions and to operate or stop the microwave.

The tray 50 on which the cooked food is placed is placed on the bottom surface of the cabinet 10, and a motor (not shown) for rotating the tray 50 is provided below the tray 50.

In addition, the side of the cooking chamber 10a of the cabinet 10 includes a device chamber 10b, and a high voltage is applied to the magnetron 61 and a high voltage capacitor (not shown) that generate microwaves, and the magnetron 61 and the high voltage capacitor. Devices such as a high pressure transformer (not shown) and a cooling fan 64 are provided in the apparatus chamber 10b.

Referring to FIG. 2, the magnetron 61 generating microwaves is mounted on an upper sidewall of one side of the cooking chamber 10a of the cabinet 10 under the waveguide 65, and the cooking chamber 10a to which the waveguide 65 is attached. One side of the injection hole (11) for communicating the inside of the cooking chamber (10a) and the waveguide 65 is formed.

In this way, the food is placed in the tray 50 placed on the bottom surface of the cooking chamber 10a, and then the operation panel 40 is operated to set cooking conditions and operate the microwave oven. As a result, microwaves are generated in the magnetron 61, and the microwaves are guided into the cooking chamber 10a through the waveguide 65 and irradiated to the food placed in the tray 50, whereby the food is heated and cooked.

At this time, the tray 50 is rotated at a constant speed by the motor, the food placed in the tray 50 is evenly heated.

Here, the tray is driven by a motor 52 provided outside the inner case bottom surface, the roller guide 54 is rotatably disposed on the bottom surface of the tray 50, the roller guide 54 and the motor 52 A coupler 56 is installed between the rollers 52 so that the rotational force of the motor 52 is transmitted to the roller guide 54 and the tray 50.

The microwave oven according to the related art has a problem in that a user may be burned when taking out food which has been cooked because only an apparatus for heating food is installed.

Therefore, there is a need for improvement.

The present invention has been made to improve the above problems, and an object thereof is to provide a microwave oven having a refrigeration cycle to cool food.

In order to achieve the above object, the present invention, the inner case is installed inside the cabinet to form a cooking chamber and electrical equipment room; A magnetron installed in the electric room to irradiate microwaves; A compressor in which the refrigerant is compressed to high temperature and high pressure by microwaves irradiated from the magnetron; A condenser for converting the refrigerant supplied from the compressor into low temperature and high pressure; An expansion valve for converting the refrigerant supplied from the condenser into low temperature and low pressure; And it provides a microwave oven having a refrigeration cycle characterized in that the refrigerant supplied from the expansion valve and the outside air is heat exchanged to perform a cooling operation.

In addition, the wave guide pipe installed between the magnetron and the cooking chamber of the present invention is provided with a branch pipe communicating with the compressor, a valve for selectively opening and closing the wave guide pipe and the branch pipe is installed. It provides a microwave oven provided.

In addition, an exhaust fan provided between the condenser and the inner case of the present invention; And it provides a microwave oven having a refrigeration cycle further comprising a blowing fan provided between the evaporator and the cabinet.

Microwave oven having a refrigeration cycle according to the present invention is provided with a refrigeration cycle that can cool the inside of the cooking chamber, it is possible to lower the temperature of the finished food to a suitable temperature can maintain the safety of the user to take out food, eating There is an advantage that can achieve a food of a suitable temperature to facilitate the user's convenience.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a microwave oven having a refrigeration cycle according to the present invention.

For convenience of explanation, a microwave oven having a refrigeration cycle will be described as an example.

In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom.

Therefore, the definitions of these terms should be made based on the contents throughout the specification.

3 is a block diagram showing a microwave oven having a refrigeration cycle according to an embodiment of the present invention.

Referring to Figure 3, the microwave oven having a refrigeration cycle according to an embodiment of the present invention, the inner case 110 is installed inside the cabinet 100 to form a cooking chamber 112 and the electrical equipment room 104, The refrigerant supplied from the magnetron 106 installed in the electrical equipment room 104 to irradiate microwaves and the compressor 120 compressed to a high temperature and a high pressure by the microwaves irradiated from the magnetron 106 and the refrigerant supplied from the compressor 120 have a low temperature. , The condenser 130 converted to high pressure, the refrigerant supplied from the condenser 130 is low temperature, the expansion valve 140 is converted to low pressure, and the refrigerant and external air supplied from the expansion valve 140 is heat-exchanged cooling operation It includes an evaporator 150 to perform.

Thus, when the microwaves irradiated from the magnetron 106 are supplied to the compressor 120, the refrigerant is compressed to high temperature and high pressure to drive a refrigeration cycle.

The refrigerant extruded at a high temperature and high pressure from the compressor 120 is condensed into a low temperature and high pressure refrigerant while passing through the condenser 130, and converted into a low temperature and low pressure refrigerant through the expansion valve 140.

The low temperature and low pressure refrigerant passes through the evaporator 150 and performs heat exchange with the outside air of the cabinet 100. The refrigerant absorbs heat in the air to form air below a predetermined temperature.

As the temperature is lowered into the cooking chamber 112, the temperature of the food stored in the cooking chamber 112 can be lowered.

In order to achieve the operation as described above, the branch pipe 122 communicating with the compressor 120 is installed in the waveguide 108 installed between the magnetron 106 and the cooking chamber 112, and the waveguide 108 and the branch pipe ( A valve 160 for selectively opening and closing 122 is provided.

Here, the valve 160 includes a first valve 162 installed in the waveguide 108, and a second valve 164 installed in the branch pipe 122.

Thus, when heating the food stored in the cooking chamber 112, the first valve 162 is opened so that microwaves irradiated from the magnetron 106 are irradiated into the cooking chamber 112, and when the food is cooled, the second valve ( 164 is opened to compress the refrigerant of the compressor 120 to a high temperature, high pressure to drive the refrigeration cycle.

In addition, the microwave oven having a refrigeration cycle according to an embodiment of the present invention, the exhaust fan 134 provided between the condenser 130 and the inner case 110, and between the evaporator 150 and the cabinet 100. It further includes a blowing fan 152 provided in.

As a result, when the air blowing fan 134 and the air blowing fan 152 are driven when the refrigeration cycle is driven, the air inside the cooking chamber 112 is discharged to the outside of the cabinet 100 along the air blowing fan 134 to open the condenser 130. Absorption of heat from the refrigerant passing through to achieve a low temperature, high pressure refrigerant.

In addition, the air flowing into the cooking chamber 112 through the evaporator 150 by the blower fan 152 is discharged to the refrigerant passing through the evaporator 150, so that air having a predetermined temperature or less is supplied to the cooking chamber 112. ) It can be supplied inside to perform cooling operation.

Looking at the operation of the microwave oven having a refrigeration cycle according to an embodiment of the present invention configured as described above are as follows.

First, when the heating operation is started by the user's operation, the first valve 162 is opened and the microwaves irradiated from the magnetron 106 are supplied into the cooking chamber 112 along the waveguide 108 so that the inside of the cooking chamber 112 can be used. The food to be stored is heated to proceed with cooking.

When the cooking is completed, the user can start the cooling operation by pressing an operation unit (not shown) installed on the outer wall of the electrical equipment room 104. When the cooling operation is started, the first valve 162 is closed and the second valve 164 is closed. The microwave is irradiated from the magnetron 106 is supplied to the compressor 120 along the branch pipe 122 with the opening.

When the microwave is supplied to the compressor 120, the refrigerant is compressed to high temperature and high pressure to pass through the condenser 130.

At this time, the air inside the cooking chamber 112 is discharged to the outside of the cabinet 100 by the driving of the air blowing fan 134, where the heat of the refrigerant is discharged to the outside of the cabinet 100. The refrigerant is transferred to low temperature and high pressure.

The low temperature and high pressure refrigerant is converted into the low temperature and low pressure refrigerant while passing through the expansion valve 140 and passes through the evaporator 150. The blower fan 152 moves from the outside of the cabinet 100 to the inside of the cooking chamber 112. The supplied air transfers heat to the refrigerant to lower the temperature below a predetermined temperature.

As a result, since the cold air is supplied to the food stored in the cooking chamber 112, the cooling operation is performed.

Reference numeral 102, which is not shown in the figure, is a partition wall that partitions the cooking chamber and the electrical equipment chamber.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand.

In addition, although a microwave oven having a refrigeration cycle has been described as an example, this is merely exemplary, and a refrigeration cycle driven by the magnetron of the present invention may be used in other products other than the refrigeration cycle used in the microwave oven.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is a perspective view showing a microwave oven according to the prior art.

2 is a cross-sectional view showing a microwave oven according to the prior art.

3 is a block diagram showing a microwave oven having a refrigeration cycle according to an embodiment of the present invention.

<Explanation of symbols on main parts of the drawings>

100: cabinet 110: inner case

120: compressor 130: condenser

140: expansion valve 150: evaporator

Claims (3)

An inner case installed in the cabinet to form a cooking chamber and an electrical cabinet; A magnetron installed in the electric room to irradiate microwaves; A compressor in which the refrigerant is compressed to high temperature and high pressure by microwaves irradiated from the magnetron; A condenser for converting the refrigerant supplied from the compressor into low temperature and high pressure; An expansion valve for converting the refrigerant supplied from the condenser into low temperature and low pressure; And And an evaporator configured to perform a cooling operation by exchanging heat from the refrigerant supplied from the expansion valve to the outside air. The method of claim 1, A waveguide provided between the magnetron and the cooking chamber is provided with a branch pipe communicating with the compressor, and a valve for selectively opening and closing the waveguide and the branch pipe is provided with a refrigeration cycle. The method of claim 1, An exhaust fan provided between the condenser and the inner case; And And a blower fan provided between the evaporator and the cabinet.

Images