KR20210079741A - Automotive air conditioning system - Google Patents

Abstract

The present invention provides a cooling and heating system for a vehicle, which comprises a compressor, indoor condenser, a water cooling type condenser, an outdoor condenser, an evaporator, an accumulator, a first electronic expansion valve, a battery chiller, a first cooling water line, a second cooling water line, a second electromagnetic expansion valve, and an opening and closing valve unit, wherein the opening and closing valve unit uses a two-way valve.

Description

Automotive air conditioning system

The present invention relates to a cooling/heating system for a vehicle, and more particularly, to a cooling/cooling system for a vehicle that performs heating and cooling of a vehicle using a refrigerant that exchanges heat with cooling water in a water-cooled condenser.

In general, in electric vehicles, a driving motor or high voltage junction box (HV J/BOX) for driving a vehicle, a motor controller including an inverter (MCU: Motor Control Unit), an electric power converter (LDC: Low Voltage DC/DC Converter), etc. Electrical components such as various controllers and high voltage components are cooled to prevent thermal damage and maintain durability, but water cooling using cooling water is usually applied.

In this water cooling type, the heat of the coolant circulated through each electrical component is emitted through a radiator (hereinafter referred to as an electrical radiator). The electrical radiator of an electric vehicle is an air-cooled type similar to the engine radiator used in a general engine (internal combustion engine) vehicle. The coolant is dissipating heat.

In the case of electric vehicles, electric vehicle parts must be cooled by water cooling instead of the engine, so an electric radiator is installed instead of the existing engine radiator, and the external air or driving wind sucked by the cooling fan passes through the electric radiator to release the heat of the coolant. .

In general, the cooling system of an electric vehicle consists of a cooling water line passing through electronic components (VSD100, MCU, LDC, HV J/BOX, Motor), an air-cooled radiator for dissipating the heat of the cooling water, a cooling water pump, and a cooling fan. At this time, the electric radiator is disposed behind the condenser for the air conditioner.

The air-conditioner condenser and electric radiator are arranged in front and rear and are commonly cooled by the intake air of the cooling fan or the running wind. However, the condenser forms an independent refrigeration system together with the expansion valve, evaporator and compressor and heats the refrigerant. air-cooled, and the electric radiator serves to cool the cooling water that is heat-exchanged from various high-voltage electric components.

However, the biggest problem with conventional cooling modules such as electric radiators and condensers is that even when trying to increase the thickness of electric radiators considering the lack of heat dissipation performance and capacity of electric radiators for cooling electric parts, there is a limit due to the limited installation space. point.

In case of increasing the thickness of the full-length radiator, since the thickness of the condenser has to be reduced in a limited installation space, the cooling performance of the vehicle is disadvantageous due to the reduction of the condenser. As the thickness of the product increases, it becomes difficult to secure an installation space.

In addition, since the capacitor is disposed in front of the electric radiator, the resistance of the external air flowing in from the front of the vehicle, that is, the ventilation resistance, is increased in the electric radiator, and thus the cooling performance of the electric parts is deteriorated.

As a prior art, reference may be made to Korean Patent Publication No. 10-2012-0059730 (June 11, 2012).

In order to solve the problems caused by the prior art, a water-cooled condenser is applied together with an air-cooled condenser, so that heat exchange is performed on the refrigerant side through two different cooling water passages.

This water-cooled condenser acts as a condenser for cooling and as an evaporator for heating, but has a refrigerant flow path with optimized cooling performance, and heat exchange on the refrigerant side (heat dissipation during cooling, absorbing heat during heating) is provided by two different coolants. This is done through the line (HTR/LTR).

During cooling, heat exchange is performed with both coolant lines, but during heating, heat exchange (endothermic heat) is made only with one coolant line (HTR, hereinafter, the first coolant line), and a relatively wide area of the LTR line (hereinafter, the second coolant line) is used. line) does not flow, so it adversely affects the formation of superheat on the refrigerant side during heating, which leads to an increase in the passage resistance of the refrigerant due to an increase in the amount of liquid state of the refrigerant. A lowering problem occurred.

The present invention was created to solve the above problems, and while using a plurality of refrigerant directional switching valves, heat exchange with the first cooling water line through which the refrigerant can absorb heat in the heating mode is made, and then the cooling water does not flow through the second cooling water line can be bypassed in the water-cooled condenser so that the refrigerant does not pass through, and by bypassing the refrigerant so that it does not pass through the second cooling water line through which the cooling water does not flow, the passage resistance of the refrigerant is reduced, thereby improving the deterioration of heating performance due to the decrease in saturation pressure. An object of the present invention is to provide a heating and cooling system for a vehicle that can be used.

In order to achieve the above object, the present invention is a compressor that compresses the introduced refrigerant and discharges it in a gaseous state of high temperature and high pressure; an indoor condenser connected to the compressor by a first flow path, into which a high-temperature refrigerant discharged from the compressor flows in, and heats the room in a heating mode by exchanging the refrigerant with air flowing in the air conditioning case; a water-cooled condenser connected to the indoor condenser by a second flow path and condensing the refrigerant through heat exchange with the cooling water by introducing the refrigerant discharged from the indoor condenser; an outdoor condenser connected to the water-cooled condenser by a third flow path and condensing the refrigerant through heat exchange with external air by introducing the refrigerant discharged from the water-cooled condenser; an evaporator connected to the outdoor condenser by a fourth flow path and cooling the room by heat exchange with air supplied to the vehicle interior through the air conditioning case while introducing the refrigerant discharged from the outdoor condenser to vaporize the refrigerant; An accumulator disposed adjacent to the compressor and connected to the evaporator by a fifth flow path, temporarily storing the refrigerant supplied from the evaporator, separating the incoming refrigerant into a liquid refrigerant and a gaseous refrigerant, and supplying the gaseous refrigerant to the compressor ; a first electromagnetic expansion valve disposed on the second flow path adjacent to the water-cooled condenser, depressurizing the refrigerant passing through the indoor condenser in a heating mode, and fully opening the valve during cooling to supply the refrigerant to the water-cooled condenser; a battery chiller provided on a first bypass line branched from the fourth flow path and connected to the fifth flow path; a first coolant line connecting a radiator disposed adjacent to the outdoor condenser and the water-cooled condenser to circulate cooling water; a second coolant line for circulating coolant by connecting the radiator unit, the water-cooled condenser, and the battery chiller to a vehicle battery; a second electronic expansion valve provided on the first bypass line adjacent to the battery chiller and decompressing the refrigerant that has passed through the outdoor condenser in a cooling battery cooperative mode; and a sixth flow path connecting the water-cooled condenser and the accumulator, a second bypass line branched from the second flow path and connected to a solenoid expansion valve on the fourth flow path, and an on/off valve provided on the third flow path. Including, the on/off valve unit provides a heating and cooling system for a vehicle, characterized in that a 2-way valve is used.

In the heating and cooling system for a vehicle according to the present invention, the first coolant line includes a first reservoir tank in which coolant circulated to the first coolant line is stored, and is provided on the first coolant line and circulated to the first coolant line. a first directional selector valve for switching the flow of the cooling water, a first coolant bypass line connecting the first reservoir tank and the first directional selector valve, and the coolant stored in the first reservoir tank is transferred to the first coolant It may include a first pump circulating in the line.

The first reservoir tank may be located at a rear end of the first radiator of the radiator unit, and the first direction switching valve may be located at a front end of the first rider.

The second coolant line includes a 2-1 coolant line connecting the second radiator of the radiator and the water-cooled capacitor, and a second coolant line connected to the 2-1 coolant line and connecting the battery chiller and the battery of the vehicle. A 2-2 coolant line may be included, and a second direction switching valve may be provided at a point where the 2-1 coolant line and the 2-2 coolant line are connected.

A 2-1 pump may be provided on the 2-1 coolant line to circulate the coolant stored in the second reservoir tank to the 2-1 coolant line, and the second-second pump may be provided on the 2-2 coolant line. A 2-2 pump for circulating the second cooling water line may be provided.

The opening/closing valve part is provided on the third flow path and includes a first opening/closing valve for selectively opening and closing a third flow path connecting the water-cooled condenser and the outdoor condenser, and provided on the sixth flow path, the water cooling condenser and the accumulator a second opening/closing valve for selectively opening and closing a sixth flow path connecting the , and a second bypass line branched from the second flow path and connected to the fourth flow path and selectively opening and closing the second bypass line A third on-off valve may be included.

The heating and cooling system for a vehicle according to the present invention is provided on the fourth flow path adjacent to the evaporator and includes a solenoid expansion valve for expanding the refrigerant to the evaporator, a first flow path connecting the compressor and the indoor condenser, and the accumulator and the compressor It is provided in the flow path connecting the PT sensor for measuring pressure and temperature at the same time may be further included.

In the cooling mode, the first opening/closing valve of the opening/closing valve part provided on the third flow path may be opened, the expansion valve provided on the fourth flow path may be expanded, and the opening/closing valve provided on the sixth flow path may be opened. The second on-off valve of the on-off valve part, the second electromagnetic expansion valve provided on the first bypass line, and the third on-off valve part of the on-off valve part provided on the second bypass line may be closed, and the cooling water may be The first coolant line and the second coolant line may circulate, and the first bypass coolant line of the first coolant line may be sealed.

In the heating mode, the first opening/closing valve of the opening/closing valve unit provided on the third flow path and the third opening/closing valve of the opening/closing valve unit provided on the second bypass line may be closed, and The second opening/closing valve of the on-off valve unit provided may be opened, the expansion valve provided on the fourth flow path may be closed, the cooling water may be circulated to the first cooling water line, and the second opening/closing valve of the first cooling water line may be closed. One bypass coolant line may be opened so that coolant may not circulate to the first radiator of the radiator unit.

In the heating and dehumidification mode, the first opening/closing valve of the opening/closing valve part provided on the third flow path may be closed, the expansion valve provided on the fourth flow path may be closed, and the above-mentioned opening/closing valve provided on the sixth flow path may be closed. The second on-off valve of the on-off valve part and the third on-off valve of the on-off valve part provided on the second bypass line may be opened, and the coolant may be circulated to the first coolant line, and The first bypass coolant line may be opened so that coolant may not circulate to the first radiator of the radiator unit.

In the cooling battery cooperative mode, the first on/off valve of the on/off valve part provided on the third flow path and the second electronic expansion valve provided on the first bypass may be opened, and provided on the fourth flow path. the expansion valve can be expanded, the second on-off valve of the on-off valve part provided on the sixth flow path and the third on-off valve part of the on-off valve part provided on the second bypass line can be closed, and the cooling water may circulate to the first coolant line and the second coolant line, and the first bypass coolant line of the first coolant line may be sealed.

The heating and cooling system for a vehicle according to the present invention has the following effects.

First, the second coolant line that cannot exchange heat with the refrigerant while allowing heat exchange with the refrigerant only through the first coolant line in the heating mode using the on/off valve unit and the water-cooled condenser provided on the plurality of flow passages and bypass lines can be bypassed.

Second, by bypassing the refrigerant to be heat-exchanged with the second cooling water line through which the cooling water does not flow, the decrease in passage resistance can be minimized, thereby improving the deterioration of heating performance due to the decrease in the saturation pressure.

1 is a block diagram showing a heating and cooling system for a vehicle according to an embodiment of the present invention.
2 is a diagram illustrating a state in which a refrigerant and coolant are circulated in a cooling mode of the cooling/heating system for a vehicle according to the present invention.
3 is a view illustrating a state in which a refrigerant and coolant are circulated in a heating mode of the heating/cooling system for a vehicle according to the present invention.
4 is a diagram illustrating a state in which a refrigerant and coolant are circulated in a heating/dehumidifying mode of the heating/cooling system for a vehicle according to the present invention.
5 is a diagram illustrating a state in which a refrigerant and a coolant are circulated in the cooling battery cooperative mode of the cooling/heating system for a vehicle according to the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, and the inventor should properly understand the concept of the term in order to best describe his invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept consistent with the technical idea of the present invention.

1 to 5, the vehicle air conditioning system 100 according to an embodiment of the present invention includes a compressor 1100, an indoor condenser 1200, a water-cooled condenser 1300, an outdoor condenser 1400, The evaporator 1500, the accumulator 1600, the first electromagnetic expansion valve 1700, the battery chiller 1800, the first coolant line 1900, the second coolant line 2000, the second electronic type It includes an expansion valve 2100 and an on/off valve unit 2200 , and may further include a solenoid expansion valve 2300 .

Referring to FIG. 1 , a vehicle heating/cooling system 100 according to the present invention includes a compressor 1100, an indoor condenser 1200, a water-cooled condenser 1300, and an outdoor condenser 1400 on a refrigerant circulation line through which refrigerant circulates. And, the evaporator 1500 is connected, and is preferably applied to an electric vehicle or a hybrid vehicle.

The compressor 1100 is a so-called compressor, which draws in and compresses a refrigerant through an input terminal connected to a flow path through which the refrigerant flows, and then discharges the compressed refrigerant to the flow path through an output terminal. At this time, the discharged refrigerant is a high-temperature and high-pressure refrigerant (refrigerant gas; gas).

An output terminal of the compressor 1100 is connected to a first flow path R1, and an input terminal of the indoor condenser 1200 and an output terminal of the compressor 1100 are connected through the first flow passage R1, so that the compressor 1100 ), the compressed high-temperature and high-pressure refrigerant (gas) is output to the indoor condenser 1200 .

The indoor condenser 1200 is provided in an air conditioning case (not shown), and it introduces a high-temperature and high-pressure refrigerant (gas) discharged from the compressor 1100, and supplies a heat source to the room through heat radiation to the surrounding air during heating. .

The indoor condenser 1200 introduces a high-temperature and high-pressure refrigerant (gas) discharged from the compressor 1100 through a first flow path R1, and the indoor condenser 1200 is connected to the vehicle through an air conditioning case (not shown). While condensing the high-temperature and high-pressure refrigerant (gas) flowing through the heat exchange with the air supplied to the interior, the air is heated with the heat of condensation, so that the interior of the vehicle is heated. The structure of the air conditioning case (not shown) and the process of supplying heat-exchanged air to the interior of the vehicle after the air conditioning case (not shown) draws in air to be heated are well-known techniques, and detailed description thereof will be omitted. decide to do

An output terminal of the indoor condenser 1200 is connected to a second flow path R2 through which a refrigerant flows, and the second flow path R2 is connected to a water-cooled condenser 1300 . The water-cooled condenser 1300 introduces the refrigerant discharged from the indoor condenser 1200 and flows into a first coolant line 1900 or a first coolant line 1900 and a second coolant line 2000 to be described later. It serves to condense the refrigerant through heat exchange. It is preferable that a first electromagnetic expansion valve 1700 to be described later is provided on the second flow path R2 , and the first electromagnetic expansion valve 1700 is disposed adjacent to the water-cooled condenser 1300 .

An input terminal of the water-cooled condenser 1300 is connected to the second passage R2 , an output terminal is connected to a third passage R3 , and the third passage R3 is connected to the outdoor condenser 1400 . In the water-cooled condenser 1300, the input terminal and the output terminal are formed to correspond, and a bypass terminal is provided on one side of the water-cooled condenser 1300 provided with the input terminal to be spaced apart from the input terminal, and the bypass terminal is The sixth flow path R6 is connected, and the sixth flow path R6 is connected to an accumulator 1600 to be described later.

The water-cooled condenser 1300 and the input terminal of the outdoor condenser 1400 connected by a third flow path R3 are connected to the third flow path R3, and the outdoor condenser 1400 separates the incoming refrigerant with external air. After condensing the refrigerant through the heat exchange of It is supplied to the evaporator 1500 .

The outdoor condenser 1400 is connected to the water-cooled condenser 1300 by a third flow path R3, draws in refrigerant from the water-cooled condenser 1300, and condenses the refrigerant through heat exchange with external air, the outdoor condenser ( 1400) is disposed close to the radiator unit RAD provided in the vehicle driving unit (drive motor, not shown), the refrigerant introduced through the input side exchanges heat with external air to condense it and discharge it to the fourth flow path R4. .

The evaporator 1500 is connected to the accumulator 1600 by a fifth flow path R5, and the accumulator 1600 is provided between the evaporator 1500 and the compressor 1100 and is supplied to the compressor 1100. While temporarily storing the refrigerant used, the incoming refrigerant is separated into a liquid refrigerant and a gaseous refrigerant, and the separated gaseous refrigerant is supplied to the compressor 1100 .

The first electronic expansion valve 1700 provided on the second flow path R2 has an opening degree adjusted according to an electronic signal during heating to reduce the high-temperature and high-pressure refrigerant supplied through the indoor condenser 1200 to reduce the pressure to a low pressure. It serves to convert the refrigerant (liquid + gas), and during cooling, the valve is fully opened and supplied to the water-cooled condenser 1300 as it is.

A battery chiller 1800 is provided on the first bypass line BR1 branched from the fourth flow path R4 connecting the outdoor capacitor 1400 and the evaporator 1500 and connected to the fifth flow path R5. The battery chiller 1800 exchanges heat with the coolant flowing through the first bypass line BR1 and the coolant flowing through the second coolant line 2000 to be described later in the cooling battery cooperative mode.

In the cooling battery cooperative mode to be described later, the refrigerant flows to the first bypass line BR1, and at this time, the battery chiller 1800 operates the refrigerant of the first bypass line BR1 and the second coolant line 2000. The heat management of the battery B is possible by the second coolant line 2000 by heat-exchanging the coolant of the battery B to cool the coolant.

The first radiator RAD1 of the radiator unit RAD disposed adjacent to the outdoor condenser 1400 and the water-cooled condenser 1300 are connected by a first cooling water line 1900 to circulate the cooling water, and the radiator unit The second writer RAD2 of RAD, the water-cooled condenser 1300, the battery chiller 1800, and the battery B are connected by a second coolant line 2000 to circulate the coolant.

The first coolant line 1900 includes a first reservoir tank 1910 , a first direction switching valve 1920 , a first coolant bypass line 1930 , and a first pump 1940 . A first reservoir tank 1910 is installed in the first coolant line 1900, and coolant circulating in the first coolant line 1900 is stored in the first reservoir tank 1910, and the first coolant line ( 1900) is provided with the first direction switching valve 1920, the flow of the coolant circulating in one direction is switched.

The first reservoir tank 1910 and the first directional selector valve 1920 are connected by a first coolant bypass line 1930 , and the first reservoir tank by the first coolant bypass line 1930 . 1910 and the first directional selector valve 1920 are connected, so that the coolant circulates without passing through the first radiator RAD1, and the coolant stored in the first reservoir tank 1910 is transferred to the first pump 1940. After cooling the vehicle driving unit (drive motor, not shown) by the water-cooled condenser 1300 is circulated.

The first reservoir tank 1910 is located at the rear end of the first radiator RAD1 of the radiator unit RAD, and the first direction switching valve 1920 is located at the front end of the first rider RAD1. desirable.

The second coolant line 2000 includes a 2-1 coolant line 2010 and a 2-2 coolant line 2020, and the 2-1 coolant line 2010 is the radiator unit RAD. of the second write data (RAD2) and the water-cooled condenser 1300 are connected, the 2-2 coolant line 2020 is connected to the 2-1 coolant line 2010, and the battery chiller 1800 and Connect the battery (B) of the vehicle. The second-first coolant line 2010 and the second coolant line 2020 are connected, and the second coolant line 2020 is connected to the second-first coolant line 2010 and the second second coolant line 2020 is connected. It is preferable that a two-way switching valve 2030 is provided.

A 2-1 pump 2040 is provided on the 2-1 coolant line 2010 to circulate the coolant stored in the second reservoir tank 2060 to the 2-1 coolant line 2010, and the It is preferable that a 2-2 pump 2050 for circulating cooling water to the 2-2 coolant line 2020 is provided on the 2-2 coolant line 2020 .

2 and 5, in the cooling mode and the cooling battery cooperative mode, cooling water is circulated through the first coolant line 1900 and the second coolant line 2000, and the Cooling water is not circulated to the first coolant bypass line 1930 .

3 and 4 , in the heating mode and the heating and dehumidifying mode, the coolant does not circulate through the second coolant line 2000 and the coolant circulates only through the first coolant line 1900 , and the circulating coolant is circulated to the first coolant bypass line 1930 so as not to be circulated to the first radiator RAD1.

Referring to FIG. 1 , a second electromagnetic expansion valve 2100 is provided on the first bypass line BR1 adjacent to the battery chiller 1800 , and the second electronic expansion valve 2100 is connected to the first It serves to reduce the pressure of the refrigerant flowing to the bypass line (BR1). The structure and operation relationship of the second electromagnetic expansion valve 2100 are the same as those of the first electromagnetic expansion valve 1700, and a detailed description thereof will be omitted.

A sixth flow path R6 connecting the water-cooled condenser 1300 and the accumulator 1600, and a second bypass line BR2 branched from the second flow path R2 and connected to the fourth flow path R4 , and on the third flow path R3, an on/off valve part 2200 for selectively opening and closing the sixth flow path R6, the second bypass flow path BR2, and the third flow path R3 is provided, It is preferable that a two-way valve is used as the on-off valve part 2200 .

The on-off valve unit 2200 includes a first on-off valve 2210 , a second on-off valve 2220 , and a third on-off valve 2230 , and the first on-off valve 2210 includes the third flow path R3 . ) and selectively opens and closes a third passage (R3) connecting the water-cooled condenser 1300 and the outdoor condenser 1400, and the second on-off valve 2220 is on the sixth passage (R6) and selectively opens and closes a sixth flow path R6 connecting the water-cooled condenser 1300 and the accumulator 1600, and the third opening/closing valve 2230 is branched from the second flow path R2. It is provided on the second bypass line BR2 connected to the fourth flow path R4 and selectively opens and closes the second bypass line BR2 .

A solenoid expansion valve 2300 is provided on the fourth flow path R4 adjacent to the evaporator 1500, and the other end of the second bypass line BR2 is connected to the solenoid expansion valve 2300 and the evaporator 1500. is connected to the fourth flow path R4, and one end of the second bypass line BR2 is connected to the second flow path R2 between the first electromagnetic expansion valve 1700 and the water-cooled condenser 1300. It is preferable to connect with

A PT sensor (S2) for simultaneously measuring pressure and temperature in a first flow path R1 connecting the compressor 1100 and the indoor condenser 1200 and a flow path connecting the accumulator 1600 and the compressor 1100 is preferably provided.

2 is in the cooling mode, and the flow of the refrigerant in the cooling mode is the compressor 1100, the indoor condenser 1200, the water-cooled condenser 1300, the outdoor condenser 1400, the evaporator 1500, the accumulator 1600, the compressor ( 1100) to cool the interior of the vehicle. Looking at the flow of the coolant in the cooling mode, the coolant moving through the first coolant line 1900 and the second coolant line 2000 is heat-exchanged with the coolant in the water-cooled condenser 1300 and the coolant cooled is transferred to the first radiator RAD1, respectively. ) and the battery (B).

In the cooling mode, the refrigerant circulates in the order of the compressor 1100, the indoor condenser 1200, the water-cooled condenser 1300, the outdoor condenser 1400, the evaporator 1500, the accumulator 1600, and the compressor 1100, and the fourth flow path The solenoid expansion valve 2300 provided on (R4) expands the refrigerant of high temperature and high pressure to low temperature and low pressure, and provided on the sixth flow path (R6) connecting the water-cooled condenser 1300 and the accumulator 1600 The third on-off valve 2230 provided on the second bypass line BR2 connecting the second on-off valve 2220 and the second passage R2 and the fourth passage R4 is preferably closed, and the third on-off valve 2230 is preferably closed. The first opening/closing valve 2210 provided on the 3 flow path R3 is opened to supply the refrigerant heat-exchanged with the cooling water in the water-cooled condenser 1300 to the outdoor condenser 1400 . In the cooling mode, the coolant circulates through the first coolant line 1900 and the second coolant line 2000, and the first bypass coolant line 1930 of the first coolant line 1900 is connected to the first direction switching valve ( 1920) is closed as the first writer (RAD1) is opened in the direction.

3 is a heating mode, and the refrigerant flow in the heating mode circulates through the compressor 1100, the indoor condenser 1200, the water-cooled condenser 1300, the accumulator 1600, and the compressor 1100 to heat the vehicle interior. will do Looking at the flow of coolant in the heating mode, the coolant circulates only through the first coolant line 1900 and exchanges heat with the coolant in the water-cooled condenser 1300 , and the coolant is bypassed to the first coolant bypass line 1930 . There is no heat exchange with the radiator (RAD1).

In the heating mode, the solenoid expansion valve provided on the fourth flow path R4 to circulate the refrigerant in the order of the compressor 1100, the indoor condenser 1200, the water-cooled condenser 1300, the accumulator 1600, and the compressor 1100. 2300 is closed, and the first on/off valve 2210 provided on the third flow path R3 and the third on/off valve 2230 provided on the second bypass line BR2 are preferably closed, The second on-off valve 2220 provided on the sixth flow path R6 is opened to supply the refrigerant heat-exchanged with the cooling water in the water-cooled condenser 1300 to the accumulator 1600 .

4 is a heating and dehumidifying mode, and in the heating and dehumidifying mode, the flow of refrigerant moves in the order of the compressor 1100, the indoor condenser 1200, the water-cooled condenser 1300, and some refrigerants in the accumulator 1600, and the compressor 1100. and the other part of the refrigerant moves in the order of the evaporator 1500, the accumulator 1600, and the compressor 1100 through the second bypass line BR2 connecting the second flow path R2 and the fourth flow path R4. while heating and dehumidifying the interior of the vehicle. Looking at the flow of cooling water in the heating and dehumidifying mode, the cooling water circulates only through the first cooling water line 1900 and exchanges heat with the refrigerant in the water-cooled condenser 1300, and the cooling water is bypassed to the first cooling water bypass line 1930. 1 It does not exchange heat with the radiator (RAD1).

In the heating and dehumidifying mode, the refrigerant moves in the order of the compressor 1100, the indoor condenser 1200, the water-cooled condenser 1300, and some refrigerants move in the order of the accumulator 1600 and the compressor 1100, and some refrigerants move to the second flow path. The evaporator 1500, the accumulator 1600, and the compressor 1100 move in this order through the second bypass line BR2 connecting R2 and the fourth flow path R4, and are provided on the fourth flow path R4. The solenoid expansion valve 2300 to be used is closed, and the first on/off valve 2210 provided on the third flow path R3 is preferably closed, and the second on/off valve 2220 provided on the sixth flow path R6. ), the third on-off valve 2230 provided on the second bypass line BR2 is opened to supply the refrigerant heat-exchanged with the cooling water in the water-cooled condenser 1300 to the accumulator 1600 and the evaporator 1500 .

5 is in the cooling battery cooperative mode, and the refrigerant flow in the cooling battery cooperative mode is the compressor 1100, the indoor condenser 1200, the water cooling condenser 1300, the outdoor condenser 1400, and the outdoor condenser 1400. Some of the refrigerant moves in the order of the evaporator 1500, the accumulator 1600, and the compressor 1100, and the other refrigerant that has passed through the outdoor condenser 1400 is the battery chiller 1800, the accumulator 16000, and the compressor 1100 in that order. The battery is cooled while cooling the interior of the vehicle while in the cooling battery coordination mode, the coolant flowing through the first coolant line 1900 and the second coolant line 2000 is a water-cooled condenser 1300 ), the coolant cooled by heat exchange with the coolant cools the battery B by cooling the coolant through the expansion of the coolant while dissipating heat in the first radiator RAD1, respectively.

In the cooling battery cooperative mode, some refrigerant that has passed through the compressor (1100), indoor condenser (1200), water-cooled condenser (1300), outdoor condenser (1400), outdoor condenser (1400) is evaporator (1500), accumulator (1600) ), the compressor 1100, and the other part of the refrigerant that has passed through the outdoor condenser 1400 moves in the order of the battery chiller 1800, the accumulator 1600, and the compressor 1100, and the fourth flow path (R4) The solenoid expansion valve 2300 provided thereon expands, the second on/off valve 2220 provided on the sixth flow path R6, and the third on/off valve provided on the second bypass line BR2. 2230 is closed, the first on/off valve 2210 provided on the third flow path R3 and the second electromagnetic expansion valve 2100 provided on the first bypass line BR1 are opened to open the water-cooled condenser ( 1300 ), the refrigerant heat-exchanged with the cooling water is supplied to the battery chiller 1800 and the evaporator 1500 . In the cooling battery cooperative mode, the coolant circulates through the first coolant line 1900 and the second coolant line 2000, and the first bypass coolant line 1930 of the first coolant line 1900 changes the first direction As the valve 1920 is opened in the direction of the first radiator RAD1, it is sealed.

Although the present invention has been described with reference to the embodiment shown in the drawings, which is only exemplary, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

100: vehicle heating and cooling system 1100: compressor
1200: indoor condenser 1300: water-cooled condenser
1400: outdoor condenser 1500: evaporator
1600: accumulator 1700: first electronic expansion valve
1800: battery chiller 1900: first coolant line
2000: second coolant line 2100: second electromagnetic expansion valve
2200: on/off valve part 2300: solenoid expansion valve

Claims (11)

a compressor for compressing the introduced refrigerant and discharging it in a gaseous state of high temperature and high pressure;
an indoor condenser connected to the compressor by a first flow path, into which a high-temperature refrigerant discharged from the compressor flows in, and heats the room in a heating mode by exchanging the refrigerant with air flowing in the air conditioning case;
a water-cooled condenser connected to the indoor condenser by a second flow path and condensing the refrigerant through heat exchange with the cooling water by introducing the refrigerant discharged from the indoor condenser;
an outdoor condenser connected to the water-cooled condenser by a third flow path and condensing the refrigerant through heat exchange with external air by introducing the refrigerant discharged from the water-cooled condenser;
an evaporator connected to the outdoor condenser by a fourth flow path and cooling the room by heat exchange with air supplied to the vehicle interior through the air conditioning case while introducing the refrigerant discharged from the outdoor condenser to vaporize the refrigerant;
An accumulator disposed adjacent to the compressor and connected to the evaporator by a fifth flow path, temporarily storing the refrigerant supplied from the evaporator, separating the incoming refrigerant into a liquid refrigerant and a gaseous refrigerant, and supplying the gaseous refrigerant to the compressor ;
a first electromagnetic expansion valve disposed on the second flow path adjacent to the water-cooled condenser, depressurizing the refrigerant passing through the indoor condenser in a heating mode, and fully opening the valve during cooling to supply the refrigerant to the water-cooled condenser;
a battery chiller provided on a first bypass line branched from the fourth flow path and connected to the fifth flow path;
a first coolant line connecting a radiator disposed adjacent to the outdoor condenser and the water-cooled condenser to circulate cooling water;
a second coolant line for circulating coolant by connecting the radiator unit, the water-cooled condenser, and the battery chiller to a vehicle battery;
a second electromagnetic expansion valve provided on the first bypass line adjacent to the battery chiller and depressurizing the refrigerant that has passed through the outdoor condenser in a cooling battery cooperative mode; and
a sixth flow path connecting the water-cooled condenser and the accumulator, a second bypass line branched from the second flow path and connected to a solenoid expansion valve on the fourth flow path, and an on/off valve provided on the third flow path and
The on/off valve unit is a heating and cooling system for a vehicle, characterized in that a 2-way valve is used.
The method according to claim 1,
The first coolant line,
a first reservoir tank in which the coolant circulating in the first coolant line is stored;
a first directional switching valve provided on the first coolant line to switch the flow of coolant circulated to the first coolant line;
a first coolant bypass line connecting the first reservoir tank and the first direction switching valve;
and a first pump circulating the coolant stored in the first reservoir tank to the first coolant line.
3. The method according to claim 2,
The first reservoir tank is located at the rear end of the first radiator of the radiator unit, and the first direction switching valve is located at the front end of the first rider.
The method according to claim 1,
The second coolant line,
a 2-1 cooling water line connecting the second radiator of the radiator and the water-cooled condenser;
and a 2-2 coolant line connected to the 2-1 coolant line and connecting the battery chiller and a battery of the vehicle;
A second direction switching valve is provided at a point where the second-first coolant line and the second-second coolant line are connected.
5. The method according to claim 4,
A 2-1 pump for circulating the coolant stored in the second reservoir tank to the 2-1 coolant line is provided on the 2-1 coolant line;
and a 2-2 pump circulating on the 2-2 coolant line to the 2-2 coolant line.
The method according to claim 1,
The on-off valve unit,
a first opening/closing valve provided on the third flow path and selectively opening and closing a third flow path connecting the water-cooled condenser and the outdoor condenser;
a second opening/closing valve provided on the sixth flow path and selectively opening and closing a sixth flow path connecting the water-cooled condenser and the accumulator;
and a third on-off valve provided on a second bypass line branched from the second passage and connected to the fourth passage and selectively opening and closing the second bypass line.
The method according to claim 1,
a solenoid expansion valve provided on the fourth flow path adjacent to the evaporator and expanding the refrigerant to the evaporator;
The heating and cooling system for a vehicle further comprising a PT sensor provided in a first flow path connecting the compressor and the indoor condenser and a flow path connecting the accumulator and the compressor to simultaneously measure pressure and temperature.
8. The method of claim 7,
In the cooling mode, the first on-off valve of the on-off valve provided on the third passage is opened, the solenoid expansion valve provided on the fourth passage expands, and the on-off valve provided on the sixth passage is opened. The second on-off valve of the negative part, the second electromagnetic expansion valve provided on the first bypass line, and the third on-off valve of the on-off valve part provided on the second bypass line are closed;
The cooling water system for a vehicle, characterized in that the coolant circulates through the first coolant line and the second coolant line, and the first bypass coolant line of the first coolant line is sealed.
8. The method of claim 7,
In the heating mode, the first opening/closing valve of the opening/closing valve unit provided on the third flow path and the third opening/closing valve of the opening/closing valve unit provided on the second bypass line are closed and provided on the sixth flow path The second opening/closing valve of the opening/closing valve part is opened, and the solenoid expansion valve provided on the fourth flow path is closed,
The cooling water system for a vehicle, characterized in that the coolant is circulated to the first coolant line, and the first bypass coolant line of the first coolant line is opened and the coolant does not circulate to the first radiator of the radiator part.
8. The method of claim 7,
In the heating and dehumidification mode, the first opening/closing valve of the opening/closing valve provided on the third flow path is closed, the solenoid expansion valve provided on the fourth flow path is closed, and the opening/closing valve provided on the sixth flow path The second on-off valve of the part and the third on-off valve of the on-off valve part provided on the second bypass line are opened,
The cooling water system for a vehicle, characterized in that the coolant is circulated to the first coolant line, and the first bypass coolant line of the first coolant line is opened and the coolant does not circulate to the first radiator of the radiator part.
8. The method of claim 7,
In the cooling battery cooperative mode, the first on-off valve of the on-off valve provided on the third flow passage and the second electromagnetic expansion valve provided on the first bypass are opened, and a solenoid provided on the fourth flow passage the expansion valve expands, and the second on/off valve of the on/off valve unit provided on the sixth flow path and the third on/off valve of the on/off valve unit provided on the second bypass line are closed;
The cooling water system for a vehicle, characterized in that the coolant circulates through the first coolant line and the second coolant line, and the first bypass coolant line of the first coolant line is sealed.

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