KR101394329B1 - System for supply refrigerants using five way step valve - Google Patents

Abstract

A refrigerant supply system using a five-way step valve is disclosed. A refrigerant supply system using a five-way step valve is provided with a compressor for compressing a refrigerant which is provided in a main body and passed through a receiving tube at a high temperature and a high pressure, a condenser for negatively cooling the refrigerant transferred from the compressor at low temperature and high pressure, A fifth step step valve for introducing the refrigerant into the one inlet pipe and branching to the first, second, third, and fourth outlet pipes; and a first and second outlet valve for converting the refrigerant moving in the outlet pipe into low temperature and low pressure, Second, third, and fourth capillary tubes and first, second, third, and fourth capillary tubes through first, second, third, and fourth discharge tubes, 3, and a fourth storage chamber to supply cold air to the first, second, third, and fourth evaporators, respectively.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a refrigerant supply system using a five-

The present invention relates to a refrigerant supply system using a 5-step step valve, and more particularly, to a refrigerant supply system using a 5-step step valve, The present invention relates to a refrigerant supply system using a five-step valve that reduces material costs and simplifies parts to reduce process defects.

Generally, a Kimchi refrigerator is composed of a compressor, a condenser, an expansion device, and an evaporator as main components, constitutes a refrigeration cycle, and requires a storage item stored in a storage room through heat transfer between a heater and a storage room separately provided around the evaporator and storage room And is kept at a low temperature.

The kimchi refrigerator includes a direct cooling type (hereinafter referred to as "direct cooling type") cooling the storage compartment by using a pipe type evaporator arranged to surround the outer surface of the storage compartment according to a cooling system, an evaporator having a cooling fin on one side of the storage compartment, (Hereinafter referred to as "indirect cooling") in which cool air is supplied to the storage room by mounting a blower fan and driving the blower fan. Meanwhile, in recent years, a mixed type Kimchi refrigerator has been proposed in which a direct cooling type storage room and a hepatic cooling type storage room are mixedly applied.

As described above, a two-room type Kimchi refrigerator having two storage rooms, which is a storage room, is mainly applied. Recently, a four-room Kimchi refrigerator having four storage rooms has been proposed in order to meet the needs of users.

Each of the four storage rooms of the four-room Kimchi refrigerator is provided with respective evaporators, which are connected to four refrigerant pipes through two three-way step valves installed in a refrigerant pipe connected to the condenser So that the refrigerant is selectively supplied to each of the evaporators.

The conventional three-way step valve is configured to divide refrigerant flowing through one inlet pipe into two pipes. Therefore, when two three-way step valves are applied, refrigerant is supplied to four evaporators of a four-room type Kimchi refrigerator .

Japanese Patent Laid-Open No. 10-2010-0084715 has been proposed as an invention for a four-room type hybrid type Kimchi refrigerator having a conventional two-step valve.

In the conventional 4-chamber Kimchi refrigerator, refrigerant supplied by four evaporators is supplied by using two three-way step valves, so that the number of step valves and the length of the refrigerant tube connecting the step valves in multiple stages are increased There is a problem that the material cost increases.

In addition, the process of connecting and assembling two 3-step step valves and a refrigerant pipe branching into several stages is very cumbersome and difficult, and also causes an assembling failure due to an increase in process, resulting in a problem that product quality is deteriorated.

Therefore, there is a need to improve this.

The present invention has been made in view of the above needs, and it is an object of the present invention to reduce the material cost by separately controlling the supply of refrigerant to four rooms by using one five-way step valve having one inflow pipe and four discharge pipes, The present invention provides a refrigerant supply system using a five-step valve that reduces process defects.

According to the present invention, the first and second pads provided on the first and second driven gears side surfaces selectively open the first, second, third, and fourth outlets selectively according to the rotation angle of the drive gear, And to provide a refrigerant supply system using a five-way step valve that can be rapidly controlled.

According to an aspect of the present invention, there is provided a refrigerant supply system using a five-step valve, including: a compressor installed in a main body and compressing refrigerant having passed through a storage tube at a high temperature and a high pressure; A condenser for chucking the refrigerant transferred from the compressor at a low temperature and a high pressure; A five-way step valve that moves the condensed refrigerant in the condenser to flow into one inlet pipe, and branches to first, second, third, and fourth outlet pipes; First, second, third, and fourth capillary tubes for converting the refrigerant moving in the discharge pipe into low temperature and low pressure; And the refrigerant moving in the first, second, third, and fourth capillary tubes is supplied to the first, second, third, and fourth storage chambers through the first, second, third, and fourth discharge pipes First, second, third, and fourth evaporators for providing cold air.

In addition, the 5-step step valve may include an inlet hole to which the inlet pipe is connected, first, second, third, and fourth outlet holes to which the first, second, third, and fourth outlet pipes are connected, A housing in which refrigerant is stored in an internal storage chamber; A stepping motor installed at one side of the housing; A driving gear provided on a central portion of the housing and having a shaft coupled to the shaft; And an opening / closing part selectively driven by the driving gear to selectively block the first, second, third, and fourth exhaust holes.

The opening and closing part may include: a first driven gear meshing with one side of the driving gear; A second driven gear engaged with the other side of the driving gear; A first pad protruding in the shape of an irregular closed curve on the upper surface of the first driven gear and blocking or opening the first and second exhaust holes in accordance with rotation of the driving gear; And a second pad protruding in the shape of an irregular closed curve around the upper surface of the second driven gear and blocking or opening the third and fourth exhaust holes in accordance with rotation of the driving gear.

In addition, the first and second discharge holes opened and closed by the first pad are used for intercooling, and the third and fourth discharge holes opened and closed by the second pad are used for direct cooling.

The first evaporator is connected to the first storage room through the first discharge pipe, and the second evaporator is connected to the second storage room through the second discharge pipe.

The first storage chamber and the second storage chamber are used as an intercooling type in which cold air generated in the first evaporator and the second evaporator is blown into a first blower fan and a second blower fan, And the two storage rooms are disposed on the upper side of the main body, respectively.

In addition, the third evaporator is connected to the third storage chamber through the third discharge pipe, and the fourth evaporator is connected to the fourth storage chamber through the fourth discharge pipe.

The third evaporator and the fourth evaporator are installed in a direct cooling type in which an evaporation duct is wound on the outer surfaces of the third storage chamber and the fourth storage chamber, and the third storage chamber and the fourth storage chamber are provided on the lower side of the main body Respectively.

As described above, the refrigerant supply system using the five-way step valve according to the present invention can control the refrigerant supply to four rooms individually by using one five-step valve having one inlet pipe and four outlet pipes It is possible to reduce material costs and simplify parts, thereby reducing process defects.

According to the present invention, the first and second pads provided on the first and second driven gears side surfaces selectively open the first, second, third, and fourth outlets selectively according to the rotation angle of the drive gear, The control can be performed quickly.

1 is a perspective view showing a four-room kimchi refrigerator according to an embodiment of the present invention,
FIG. 2 is a schematic configuration diagram of a refrigerant supply system using a five-step valve according to an embodiment of the present invention;
3 is an enlarged plan view of a five-step step valve according to an embodiment of the present invention,
4 is a structural perspective view of a five-way step valve according to an embodiment of the present invention,
5 is a structural cross-sectional view of a five-way step valve according to an embodiment of the present invention.

Hereinafter, a refrigerant supply system using a five-step valve according to an embodiment of the present invention will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective view showing a four-room kimchi refrigerator according to an embodiment of the present invention, FIG. 2 is a schematic configuration view of a refrigerant supply system using a five-way step valve according to an embodiment of the present invention, 4 is a perspective view of a five-step valve according to an embodiment of the present invention. FIG. 5 is a cross-sectional view of a five-step valve according to an embodiment of the present invention. Sectional view of the step valve.

1 to 5, a refrigerant supply system using a five-step valve according to an embodiment of the present invention includes a compressor 20, a condenser 30, a five-step valve 50, Second, third, and fourth capillary tubes 80, 82, 84, 86, and first, second, third, and fourth evaporators 90, 92, 94,

The compressor 20 is provided in the main body 10 and compresses the refrigerant passing through the receiving tube 22 at high temperature and high pressure.

The main body 10 is configured to form the outer shape of a kimchi refrigerator or a general refrigerator, and stores the kimchi or the general food at a temperature of image or subzero.

The main body 10 has first, second, third, and fourth storage rooms 12, 14, 16, and 18. The first, second, third, and fourth storage rooms (12, 14, 16, 18) may be changed in position as occasion demands.

The first storage chamber 12 is provided on the upper left side of the main body 10 and the second storage chamber 14 is provided on the upper right side of the main body 10. The third storage chamber 16, And the fourth storage chamber 18 is located on the lower side of the lower portion of the main body 10. [

At this time, the first and second storage rooms 12 and 14 are applied as a cold-cooled room having a closed door, and the third and fourth storage rooms 16 and 18 are applied as a direct-cooled room made of a slide type drawer.

Of course, depending on the case, all four storage rooms can be used by direct cooling or all four storage rooms can be used as an indirect cooling type. In some cases, one of the storage rooms can be selected by direct cooling or indirect cooling.

The condenser (30) condenses the refrigerant transferred from the compressor (20) to a low temperature and a high pressure. That is, the condenser 30 moves the refrigerant through the pipeline and blows the cold air to the blowing fan to discharge the heat, thereby making the high-temperature, designed refrigerant low in temperature and high in pressure.

3 to 5, the five-way step valve 50 moves the condensed refrigerant in the condenser 30 to flow into one inlet pipe 32, and the first, second, third, and fourth Branch to the discharge pipes (40, 42, 44, 46).

The five-way step valve 50 includes a housing 52, a stepping motor 64, a drive gear 66 and an opening / closing part 70.

The housing 52 includes an inlet hole 54 to which the inlet pipe 32 is connected and first, second, third, and fourth outlet pipes 40, 42, 44, and 46 to which the first, Third, and fourth discharge holes 56, 58, 60, and 62 are formed, and the refrigerant is stored in the internal storage chamber 63.

The housing 52 is made of two or more detachable parts and can be assembled or disassembled, and the housing 52 having the first, second, third, and fourth exhaust holes 56, 58, 60, And the bottom portion may be recessed.

The stepping motor 64 is installed on one side of the housing 52.

The stepping motor 64 is supplied with electric power through a conductor (not shown) and senses the temperature of the temperature sensing units installed in the first, second, third, and fourth storage rooms 12, 14, Second, third, and fourth discharge holes 56, 58, 60, and 62 are selectively opened so that the first, second, third, and fourth discharge pipes 40, 44, and 46 to the first, second, third, and fourth evaporators 90, 92, 94, and 96, respectively.

Accordingly, the internal temperatures of the first, second, third, and fourth storage chambers 12, 14, 16, and 18 are controlled by one five-step valve 50.

The shaft of the stepping motor 64 is mounted on the central portion of the housing 52 and coupled to the shaft to rotate. The drive gear 66 is a pinion gear having gear teeth formed on its outer peripheral surface.

The opening and closing part 70 is configured to selectively block or open the first, second, third, and fourth exhaust holes 56, 58, 60, 62 by being driven by the driving gear 66.

The opening and closing part 70 includes a first driven gear 72 meshing with one side of the driving gear 66, a second driven gear 74 meshing with the other side of the driving gear 66, A first pad 76 for blocking or opening the first and second discharge holes 56 and 58 in accordance with the rotation of the driving gear 66, A second driven gear 74 having a circumferential shape in the shape of an irregular closed curve, and the second and fourth driven gears 60 and 62, And a pad 78.

As the first and second driven gears 72 and 74 are formed to be larger than the diameter of the drive gear 66, more gear teeth are formed on the circumferential surface than the gear teeth of the circumferential surface of the drive gear 66.

The first and second discharge holes 56 and 58 opened and closed by the first pad 76 are used for intercooling and the third and fourth discharge holes 60 and 62 which are opened and closed by the second pad 78, Is used for direct cooling. On the contrary, the first and second exhaust holes 56 and 58 are used for direct cooling and the third and fourth exhaust holes 60 and 62 can be used for indirect cooling.

The first driven gear 72 and the first pad 76 may be used for direct cooling and the second driven gear 74 and the second pad 78 may be used for intercooling.

The first pad 76 and the second pad 78 may be formed into a peripheral shape to open or shut off three or more discharge holes. If the first pads 76 and the second pads 78 block or open the three exhaust holes formed in the housing 52, they will be used as a seven-step valve.

Also, three or more pads may be provided on the driven gear engaged with the driving gear 66 and on the driven gear. If it is configured to open or shut off three or more vent holes, it can be used as a step valve with 9 or more chambers.

The first, second, third, and fourth capillary tubes 80, 82, 84, 86 are configured to cool the refrigerant moving in the first, second, third, and fourth discharge tubes 40, , And low pressure.

The first, second, third, and fourth evaporators 90, 92, 94, and 96 are configured to cool refrigerant flowing in the first, second, third, and fourth capillary tubes 80, 82, Second, third, and fourth storage rooms (12, 14, 16, 18) through the first, second, third, and fourth discharge pipes to provide cool air.

The first evaporator 90 is connected to the first storage chamber 12 through the first discharge pipe 40 and the second evaporator 92 is connected to the second storage chamber 14 through the second discharge pipe 42.

The first storage chamber 12 and the second storage chamber 14 blow the cool air generated in the first evaporator 90 and the second evaporator 92 to the first blowing fan 13 and the second blowing fan 15, The state is used for cold cooling.

The first blowing fan 13 and the second blowing fan 15 are disposed at appropriate positions around the first storage chamber 12 and the second storage chamber 14.

The first storage compartment 12 and the second storage compartment 14 are disposed on the upper side of the main body 10 so as to be laterally disposed on the upper side of the main body 10, .

The third evaporator 94 and the fourth evaporator 96 are installed in a direct cooling type in which evaporation ducts are wound on the outer surfaces of the third storage chamber 16 and the fourth storage chamber 18. For convenience, the third storage chamber 16 and the fourth storage chamber 18 are disposed at the lower portion of the main body 10, respectively.

Hereinafter, the operation of the refrigerant supply system using the five-way step valve according to one embodiment of the present invention will be described with reference to the accompanying drawings.

The refrigerant introduced into the compressor 20 through the storage tube 22 is compressed to a high temperature and a high pressure by the compressor 20 while being compressed by the compressor 20 at a high temperature and a high pressure in a state where the Kimchi refrigerator or the general refrigerator is operated, The refrigerant in the gaseous state passes through the condenser 30, becomes a refrigerant in a liquid state due to high pressure, and is in a state of low temperature and high pressure by losing heat.

Next, the temperature of each storage room is sensed using the respective temperature sensing units provided in the first, second, third, and fourth storage rooms 12, 14, 16, and 18 provided in the main body 10, The refrigerant is selectively supplied using the step valve (50).

When the driving gear 60 is rotated clockwise or counterclockwise by rotating the shaft of the stepping motor 64, the refrigerant is selectively supplied through the five-step valve 50, The first driven gear 72 and the second driven gear 74 rotate.

As the first and second driven gears 72 and 74 are rotated, the peripheries of the first and second pads 76 and 78 provided on the upper surfaces of the first and second driven gears 72 and 74 become irregular closed curves Second, third, and fourth discharge pipes 40, 42, and 44 through the first, second, third, and fourth discharge holes 56, 58, 60, Second, third, and fourth capillary tubes 80, 82, 84, 86 through the first, second, and third heat exchangers 46, 46 so that the refrigerant converts to low temperature and low pressure.

The refrigerant discharged from the first, second, third and fourth capillary tubes 80, 82, 84 and 86 is supplied to the first, second, third and fourth evaporators 90, 92, 94 and 96, So that the refrigerant is selectively supplied.

As the refrigerant supplied to the first, second, third, and fourth evaporators 90, 92, 94, and 96 evaporates, the first, second, third, and fourth storage rooms 12, 14, 16, The refrigerant expands in the heat exchanger 18 to lower the temperature of the interior of each storage compartment by the surrounding heat. When the set temperature is reached, the opening and closing of the five-step valve 50 is controlled or the cooling system is temporarily stopped.

By repeating this operation, the temperature of the four-room kimchi refrigerator can be controlled.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

Accordingly, the true scope of protection of the present invention should be defined by the following claims.

10: main body 12, 14, 16, 18: first, second, third,
20: compressor 22:
30: condenser 32: inlet pipe
40, 42, 44, 46: first, second, third,
50: 5 -step step valve 52: housing
64: stepping motor 66: drive gear
70: opening and closing part 72: first driven gear
74: second driven gear 76: first pad
78: second pad 80, 82, 84, 86: first, second, third and fourth capillaries
90, 92, 94 and 96: first, second, third and fourth evaporators

Claims (8)

A compressor provided in the main body and compressing the refrigerant that has passed through the storage tube at a high temperature and a high pressure;
A condenser for chucking the refrigerant transferred from the compressor at a low temperature and a high pressure;
A five-way step valve that moves the condensed refrigerant in the condenser to flow into one inlet pipe, and branches to first, second, third, and fourth outlet pipes;
First, second, third, and fourth capillary tubes for converting the refrigerant moving in the discharge tube; And
Third, and fourth capillary tubes through first, second, third, and fourth discharge tubes to the first, second, third, Second, third, and fourth evaporators,
Wherein the five-way step valve comprises:
A housing having first, second, third, and fourth discharge holes to which the first, second, third, and fourth discharge pipes are connected, the refrigerant being stored in the internal storage chamber;
A stepping motor installed at one side of the housing;
A driving gear provided on a central portion of the housing and having a shaft coupled to the shaft;
And an opening / closing part selectively driven by the driving gear to selectively block or open the first, second, third, and fourth exhaust holes,
Wherein the opening / closing portion includes: a first driven gear meshing with one side of the driving gear;
A second driven gear engaged with the other side of the driving gear;
A first pad protruding in the shape of an irregular closed curve on the upper surface of the first driven gear and blocking or opening the first and second exhaust holes in accordance with rotation of the driving gear; And
And a second pad protruding in the shape of an irregular closed curve on the upper side of the second driven gear and blocking or opening the third and fourth exhaust holes in accordance with rotation of the driving gear,
The first and second discharge holes opened and closed by the first pad are used for intercooling,
The third and fourth discharge holes opened and closed by the second pad are used for direct cooling,
Wherein the first evaporator is connected to the first storage chamber through the first discharge pipe and the second evaporator is connected to the second storage chamber through the second discharge pipe,
Wherein the first storage chamber and the second storage chamber are used as an intercooling type in which cold air generated in the first evaporator and the second evaporator is blown into a first blowing fan and a second blowing fan,
The first storage chamber and the second storage chamber are respectively disposed on the upper side of the main body,
The third evaporator is connected to the third storage chamber through the third discharge pipe, the fourth evaporator is connected to the fourth storage chamber through the fourth discharge pipe,
Wherein the third evaporator and the fourth evaporator are installed in a direct cooling type in which evaporation ducts are wound on outer surfaces of the third storage chamber and the fourth storage chamber,
Wherein the third storage chamber and the fourth storage chamber are disposed on upper and lower sides of a lower portion of the main body, respectively. delete delete delete delete delete delete delete

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