KR20210058378A - Air conditioner system for vehicle - Google Patents

Abstract

The present invention provides an air conditioning system for a vehicle, which comprises: a pair of evaporation units exchanging heat with a refrigerant and air and spaced from each other to discharge cold air to different directions; one expansion valve expanding the refrigerant with low temperature and high pressure to be supplied to the evaporation unit; an inlet pipe where the refrigerant of the expansion valve is moved to a first evaporation unit; a first moving pipe where the refrigerant circulating one area of the first evaporation unit is moved to the second evaporation unit; a second moving pipe where the refrigerant circulating a second evaporation unit is moved to the first evaporation unit; and a leakage pipe where the circulated refrigerant of the first evaporation unit is leaked.

Description

Air conditioner system for vehicle {Air conditioner system for vehicle}

The embodiment relates to an air conditioning system for a vehicle. More specifically, it relates to an air conditioning system for a vehicle that minimizes a temperature deviation of air discharged from each evaporator when one expansion valve and two evaporators are connected.

In general, as shown in FIG. 1, a general vehicle air conditioner system includes a compressor (1) that compresses and delivers a refrigerant, a condenser (2) that condenses a high-pressure refrigerant delivered from the compressor (1), For example, an expansion valve (3) that throttles the refrigerant condensed and liquefied in the condenser (2), and the low pressure liquid refrigerant throttled by the expansion valve (3) is heat-exchanged with air blown to the interior of the vehicle. The evaporator (4), which cools the air discharged into the room by the endothermic action by the latent heat of evaporation of the refrigerant by evaporation, is composed of a refrigeration cycle connected with a refrigerant pipe. To cool.

When the cooling switch (not shown) of the air conditioner system is turned on, the compressor 1 is driven by the power of an engine or motor and sucks and compresses the low-temperature, low-pressure gaseous refrigerant to form a high-temperature, high-pressure gaseous state. ), and the condenser 2 heats the gaseous refrigerant with outside air to condense it into a high-temperature and high-pressure liquid. Subsequently, the liquid refrigerant delivered from the condenser 2 at high temperature and high pressure is rapidly expanded due to the throttling action of the expansion valve 3 and sent to the evaporator 4 in a wet state of low temperature and low pressure, and the evaporator 4 The refrigerant is heat-exchanged with air blown into the vehicle interior by a blower (not shown). Accordingly, the refrigerant is evaporated in the evaporator 4, discharged in a low-temperature, low-pressure gaseous state, and is sucked back into the compressor 1 to recirculate the refrigeration cycle as described above.

In the above-described refrigerant circulation process, the cooling of the interior of the vehicle is cooled by the latent heat of evaporation of the liquid refrigerant circulating in the evaporator 4 while the air blown by the blower (not shown) passes through the evaporator 4 as described above. It is achieved by being discharged into the vehicle interior in a cold state.

In such a general vehicle air conditioning system, one expansion valve is used in one evaporator, and when a plurality of evaporators are used, the number of parts increases.

In addition, there is a problem in that a structure for connecting a plurality of evaporators and expansion valves is complicated.

The embodiment is to supply a refrigerant from one expansion valve to two evaporators, but to minimize the temperature deviation of the air discharged from each evaporator.

The problem to be solved by the present invention is not limited to the problems mentioned above, and other problems not mentioned herein will be clearly understood by those skilled in the art from the following description.

In an embodiment of the present invention, a pair of evaporation units that perform heat exchange between a refrigerant and air and are spaced apart from each other to discharge cool air in different directions; One expansion valve for expanding the low-temperature and high-pressure refrigerant and supplying the refrigerant to the evaporation unit; An inlet pipe through which the refrigerant from the expansion valve moves to the first evaporation unit; A first moving pipe through which the refrigerant circulating in a region of the first evaporation unit moves to a second evaporation unit; A second moving pipe through which the refrigerant circulating the second evaporation unit moves to the first evaporation unit; And an outlet pipe through which the refrigerant circulated in the first evaporation unit flows out.

Preferably, each of the first evaporation unit and the second evaporation unit may have a two-row structure.

Preferably, inflow and outflow from the first evaporation unit and the second evaporation unit may occur at different heat.

Preferably, the first row and the second row of the first evaporation unit are separated from each other, and the first row and the second row of the second evaporation unit are in communication with each other.

Preferably, in the first evaporation unit, the inlet pipe is in the second row, the first moving pipe is in the second row of the first evaporation unit and the second row in the second evaporation unit, and the second moving pipe is in the second row of the second evaporation unit. In the first row and the first row of the first evaporation unit, the outlet pipe may be connected to the first row of the first evaporation unit.

Preferably, the pair of evaporation units may be characterized in that they have an inclination.

Preferably, a blower may be disposed above the evaporation unit.

Preferably, the inlet and outlet of the evaporation unit may be arranged at an upper side based on an inclination.

In addition, the present invention is a pair of evaporation units having a two-row structure that performs heat exchange between the refrigerant and air and is spaced apart from each other to discharge cool air in different directions; A single expansion valve for expanding the low-temperature and high-pressure refrigerant and supplying the refrigerant to the evaporation unit, wherein the refrigerant discharged from the expansion valve passes through the second heat of the first evaporation unit and then sequentially circulates the second evaporation unit, It may be implemented as an air conditioning system for a vehicle, characterized in that it passes through the first heat of the first evaporation unit.

Preferably, the refrigerant flowing into the first evaporation unit and the second evaporation unit may be introduced into the second heat and discharged into the first heat.

According to the embodiment, there is an effect of minimizing a temperature deviation of discharged air by using one expansion valve in an air conditioning system having two or more evaporators.

In addition, cost can be reduced by reducing the number of expansion valves and evaporator connecting parts.

In addition, it is possible to simplify the configuration of the inlet side of the evaporator.

Various and beneficial advantages and effects of the present invention are not limited to the above description, and will be more easily understood in the course of describing specific embodiments of the present invention.

1 is a diagram showing the structure of a general vehicle air conditioning system,
2 is a schematic diagram of an air conditioning system for a vehicle according to an embodiment of the present invention,
3 is a view showing the structure of an evaporator that is a component of FIG. 2,
Figure 4 is an exploded perspective view of Figure 3,
5 is a structural diagram of an air conditioning system for a vehicle according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the technical idea of the present invention is not limited to some embodiments to be described, but may be implemented in various different forms, and within the scope of the technical idea of the present invention, one or more of the constituent elements may be selectively selected. It can be combined with and substituted for use.

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention are generally understood by those of ordinary skill in the art, unless explicitly defined and described. It can be interpreted as a meaning, and terms generally used, such as terms defined in a dictionary, may be interpreted in consideration of the meaning in the context of the related technology.

In addition, terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention.

In the present specification, the singular form may also include the plural form unless specifically stated in the phrase, and when described as “at least one (or more than one) of A and (and) B and C”, it is combined with A, B, and C. It may contain one or more of all possible combinations.

In addition, terms such as first, second, A, B, (a), and (b) may be used in describing the constituent elements of the embodiment of the present invention.

These terms are only for distinguishing the constituent element from other constituent elements, and are not limited to the nature, order, or order of the constituent element by the term.

And, when a component is described as being'connected','coupled' or'connected' to another component, the component is not only directly connected, coupled, or connected to the other component, but also with the component. It may also include the case of being'connected','coupled' or'connected' due to another element between the other elements.

In addition, when it is described as being formed or disposed on the “top (top) or bottom (bottom)” of each component, the top (top) or bottom (bottom) is one as well as when the two components are in direct contact with each other. It also includes the case where the above other component is formed or disposed between the two components. In addition, when expressed as "upper (upper) or lower (lower)", the meaning of not only an upward direction but also a downward direction based on one component may be included.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings, but the same reference numerals are assigned to the same or corresponding components regardless of the reference numerals, and redundant descriptions thereof will be omitted.

2 to 5, in order to clearly understand the present invention conceptually, only the main characteristic parts are clearly shown, and as a result, various modifications of the illustration are expected, and the scope of the present invention is limited by the specific shape shown in the drawings. It doesn't have to be.

2 is a schematic diagram of an air conditioning system for a vehicle according to an embodiment of the present invention.

Referring to FIG. 2, in the air conditioning system for a vehicle according to an embodiment of the present invention, a blower 800 is disposed in the center, and a first evaporation unit 100 and a second evaporation unit 200 are disposed on both sides of the blower 800. Can be.

The air discharged from the blower 800 may be connected to the first evaporating unit 100 through the first connecting unit 810 and connected to the second evaporating unit 200 through the second connecting unit 820. Air discharged from the blower 800 is supplied into the vehicle through the evaporation units 100 and 200.

3 is a view showing the structure of an evaporation unit that is a component of FIG. 2, and FIG. 4 is an exploded perspective view of FIG. 3.

The structure shown in FIGS. 3 and 4 is an embodiment of the structure of the first evaporation unit 100 and the second evaporation unit 200. The first evaporation unit 100 and the second evaporation unit 200 represent a configuration of an evaporation unit having a two-row structure, and each structure may be modified according to exemplary embodiments. Hereinafter, only the structure of the first evaporation unit will be described.

The first evaporation unit 100 is disposed so that the first header tank 10 and the second header tank 20 face each other, and a plurality of tubes ( 50) can be connected.

In addition, fins 60 are disposed between the plurality of tubes 50 to increase heat exchange efficiency.

The first header tank 10 and the second header tank 20 may have a two-row structure, and the inlet pipe 30 and the outlet pipe 40 may be connected to the first header tank 10.

The first header tank 10 and the second header tank 20 have a two-row structure, and a partition wall 11 for moving the refrigerant may be disposed in the longitudinal direction.

Each row may have a baffle 12 for forming a flow path. The baffles 12 may be disposed in the width direction of the first header tank 10 or the second header tank 20, and the number and position of the baffles 12 may vary depending on the number of passes.

In addition, the communication part 13 is installed in the partition 11 so that the refrigerant can move from the first row to the second row. The communication unit 13 may be disposed as necessary, and may vary according to a connection structure between the first evaporation unit 100 and the second evaporation unit 200.

The structure of the evaporation unit shown in FIGS. 3 and 4 is for explaining the basic structure of a two-row structure, and embodiments of the present invention are not limited thereto, and the structure of the evaporation unit may be variously modified using the basic structure. .

5 is a structural diagram of an air conditioning system for a vehicle according to an embodiment of the present invention.

5, a vehicle air conditioning system according to an embodiment of the present invention is a pair of evaporation units having a two-row structure that exchanges heat with refrigerant and air and is spaced apart from each other to discharge cool air in different directions, low temperature. It includes one expansion valve 300 that expands the high-pressure refrigerant and supplies it to the evaporation unit, and the refrigerant discharged from the expansion valve 300 passes through the second row 120 of the first evaporation unit 100, The second evaporation unit 200 may be sequentially circulated and may pass through the first row 110 of the first evaporation unit 100.

In the present invention, after circulating the refrigerant discharged from one expansion valve 300 through the second row 120 of the first evaporation unit 100, the entire second evaporation unit 200 is circulated, and then the first evaporation unit again. A structure for circulating the first row 110 of 100 may be provided.

In this case, the refrigerant flowing into the first evaporation unit 100 and the second evaporation unit 200 may be disposed to flow into the second rows 120 and 220 and outflow into the first rows 110 and 210.

When the refrigerant discharged from one expansion valve 300 moves the evaporation unit, heat loss occurs. In the present invention, it is an object of the present invention to minimize the temperature deviation of the discharged air in consideration of the temperature of the refrigerant and the location where the evaporation units 100 and 200 circulate.

An embodiment of the present invention may include an evaporation unit, an expansion valve 300, an inlet pipe 400, a first movable pipe 500, a second movable pipe 600, and an outlet pipe 700.

The evaporation units 100 and 200 are provided in a pair, and are spaced apart from each other, so that the refrigerant and air may exchange heat. The reason that the evaporation unit is provided in a pair is to allow cold air to be discharged in different directions. The location of the evaporation unit may be variously modified according to the direction in which the cold air is discharged or the structure of the duct.

In one embodiment, the evaporation unit may include a pair of header tanks and a plurality of tubes connecting the header tanks to move the refrigerant, and fins disposed between the tubes. The structure of the evaporation unit is not limited and can be variously modified.

In the present invention, the evaporation unit includes a first evaporation unit 100 and a second evaporation unit 200 spaced apart from each other, and each may be arranged in a two-row structure.

The first evaporation unit 100 may include a first row 110 disposed above and a second row 120 disposed below the first rows 110 and 210. However, the first evaporation units 100 arranged in two rows may have a structure in which the first row 110 and the second row 120 are separated. This means that the refrigerant does not move between the header tanks arranged in each row.

The second evaporation unit 200 may include a first row 210 disposed above and a second row 220 disposed below the first row 210. However, the second evaporation units 200 arranged in two rows may have a structure in which the first row 210 and the second row 220 communicate with each other so that the refrigerant moves. This means that the refrigerant moves between the header tanks arranged in each row.

That is, the refrigerant flowing into the second row 120 of the first evaporation unit 100 does not move to the first row 110 but moves to the second evaporation unit 200. Thereafter, the refrigerant flowing into the second row 220 of the second evaporation unit 200 is connected to the first row 210 through a header tank, and after circulating the first row 210, the first evaporation unit 100 ) Is moved to the first column 110. Through this, it is possible to increase the circulation efficiency of the refrigerant.

The first evaporation unit 100 and the second evaporation unit 200 may be disposed to have an inclination. This is to facilitate circulation of the cold air discharged through the first evaporation unit 100 and the second evaporation unit 200. The inclination angle of the first evaporation unit 100 and the second evaporation unit 200 is not limited, and may be variously modified according to the position of the duct through which the cool air is circulated.

A blower 800 is disposed above the evaporation units 100 and 200 to move the cool air heat-exchanged to the evaporation unit. The shape of the blower 800 is not limited, and may be disposed above a pair of evaporation units, or may be disposed so that each discharge port faces each evaporation unit in a structure having two discharge ports from one blower 800.

The expansion valve 300 may expand the low-temperature and high-pressure refrigerant to supply the refrigerant to the first evaporation unit 100.

As shown in FIG. 1, a general vehicle air conditioning system includes a system for circulating a compressor, a condenser, an expansion valve, and an evaporator for compressing and delivering refrigerant.

At this time, the expansion valve 300 may rapidly expand the liquid refrigerant delivered from the condenser in a high-temperature and high-pressure state due to the throttling action of the expansion valve 300 to supply the low-temperature, low-pressure, wet-saturated refrigerant to the evaporator. In the present invention, the structure of the expansion valve 300 is not limited, and may be modified in various structures.

The inlet pipe 400, the first moving pipe 500, the second moving pipe 600, and the outlet pipe 700 constitute a moving line of the refrigerant.

The inlet pipe 400 provides a passage through which the refrigerant discharged from the expansion valve 300 moves to the first evaporation unit 100.

The first moving pipe 500 provides a passage through which the refrigerant circulating in one region of the first evaporating unit 100 moves to the second evaporating unit 200.

The second moving pipe 600 provides a passage through which the refrigerant circulating through the second evaporating unit 200 moves to the first evaporating unit 100.

The outlet pipe 700 provides a passage through which the refrigerant circulating through another region of the first evaporation unit 100 flows out.

In one embodiment, in the first evaporation unit 100, the inlet pipe 400 is in the second row 120, the first moving pipe 500 is the second row 120 of the first evaporation unit 100 and In the second row 220 of the second evaporation unit 200, the second moving pipe 600 is the first row 210 of the second evaporation unit 200 and the first row of the first evaporation unit 100 At 110, the outflow pipe 700 may be connected to the first row 110 of the first evaporation unit 100 to provide a passage through which the refrigerant circulates.

In the present invention, the inlet pipe 400, the first movable pipe 500, the second movable pipe 600, and the outflow pipe 700 are provided in a tubular structure, and provide a passage through which the refrigerant can move. However, the arrangement structure can be variously modified. However, in order to prevent heat loss of the refrigerant, it is preferable to be disposed at the shortest distance.

In the present invention, the first evaporation unit 100 and the second evaporation unit 200 having a two-row structure may have inflow and outflow at different heats.

In one embodiment, in the first evaporation unit 100, the inlet pipe 400 is connected to the second row 120, and one side of the first moving pipe 500 is connected to the second row 120. In the second evaporation unit 200, the other side of the first moving pipe 500 is connected to the second row 220, and one side of the second moving pipe 600 is the second evaporating unit 200 and the first row 210 ), the other side is connected to the first row 110 of the first evaporation unit 100. Thereafter, the outflow pipe 700 may be connected to the first row 210 of the first evaporation unit 100.

The second row 120 of the first evaporation unit 100 and the second row 220 of the second evaporation unit 200 refer to heat disposed under each evaporation unit, and among the refrigerants flowing into each evaporation unit A refrigerant having a cooler temperature is introduced.

This is to increase cooling efficiency by causing heat loss generated when the refrigerant moves the evaporation unit and heat exchange of the refrigerant having a low temperature at a location close to the occupant.

In addition, the inlet and outlet of the evaporation unit may be disposed on the upper side based on the inclination.

In one embodiment, the moving lines of the refrigerant connected to the first evaporation unit 100 and the second evaporation unit 200 may be connected to the upper side based on the inclination.

In addition, the inlet and outlet to which the refrigerant moving line is connected may vary depending on the number of baffles disposed in the header tank of the evaporator to form the flow path of the evaporator.

In one embodiment, a pair of inlet and outlet provided in the first evaporation unit 100 may be formed to face each of the first row 110 and the second row 120, and the second evaporation through which the refrigerant circulates. In the unit 200, it may be disposed on one side of the first row 210 and the second row 220.

As described above, with reference to the accompanying drawings with respect to an embodiment of the present invention was looked at in detail.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the technical field to which the present invention belongs can make various modifications, changes, and substitutions within the scope not departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings. . The scope of protection of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10: first header tank 11: bulkhead
12: baffle 13: communication unit
20: second header tank 30: inlet pipe
40: outlet pipe 50: tube
60: pin 100: first evaporation unit
110,210: first column 120,220: second column
200: second evaporation unit 300: expansion valve
400: inlet pipe 500: first moving pipe
600: second moving pipe 700: outflow pipe
800: blower 810: first connection
820: second connection

Claims (10)

A pair of evaporation units that perform heat exchange between refrigerant and air and are spaced apart from each other to discharge cool air in different directions;
One expansion valve for expanding the low-temperature and high-pressure refrigerant and supplying the refrigerant to the evaporation unit;
An inlet pipe through which the refrigerant from the expansion valve moves to the first evaporation unit;
A first moving pipe through which the refrigerant circulating in a region of the first evaporation unit moves to a second evaporation unit;
A second moving pipe through which the refrigerant circulating the second evaporation unit moves to the first evaporation unit; And
An outlet pipe through which the refrigerant circulated in the first evaporation unit flows out;
Vehicle air conditioning system comprising a. The method of claim 1,
Each of the first evaporation unit and the second evaporation unit has a two-row structure. The method of claim 2,
An air conditioning system for a vehicle, characterized in that inflow and outflow from the first evaporation unit and the second evaporation unit occur in different heat. The method of claim 3,
The first row and the second row of the first evaporation unit are separated from each other,
The air conditioning system for a vehicle, characterized in that the first row and the second row of the second evaporation unit communicate with each other. The method of claim 4,
In the first evaporation unit, the inlet pipe is in a second row,
The first moving pipe is in the second row of the first evaporation unit and the second row of the second evaporation unit,
The second moving pipe is in the first row of the second evaporation unit and the first row of the first evaporation unit,
The outflow pipe is an air conditioning system for a vehicle, characterized in that connected to the first row of the first evaporation unit. The method of claim 2,
A vehicle air conditioning system, characterized in that the pair of evaporation units have an inclination. The method of claim 6,
An air conditioning system for a vehicle, characterized in that a blower is disposed above the evaporation unit. The method of claim 6,
The air conditioning system for a vehicle, characterized in that the inlet and outlet of the evaporation unit are disposed above the inclination. A pair of evaporation units having a two-row structure that performs heat exchange between the refrigerant and air and is spaced apart from each other to discharge cool air in different directions;
One expansion valve for expanding the low-temperature and high-pressure refrigerant and supplying it to the evaporation unit;
Including,
The refrigerant discharged from the expansion valve passes through the second row of the first evaporation unit, then sequentially circulates the second evaporation unit, and passes through the first row of the first evaporation unit. The method of claim 9,
A vehicle air conditioning system, characterized in that the refrigerant flowing into the first evaporation unit and the second evaporation unit is introduced as second heat and discharged as the first heat.

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