KR20210090004A - Refrigerant System Module of Automotive Heat Pump - Google Patents

Abstract

The present invention provides a refrigerant system module for a vehicle heat pump using a refrigerant circulating in a compressor, a condenser, an evaporator, a chiller, and an accumulator, wherein the refrigerant system module includes a first area where an outlet side of the compressor exists and an inlet side of the compressor It is partitioned into a second region in which the present invention exists, the condenser and the accumulator are disposed in the first region, and the chiller and the evaporator are disposed in the second region. Provide a refrigerant system module for a vehicle heat pump do.

Description

Refrigerant System Module of Automotive Heat Pump

The embodiment relates to a refrigerant system module of a vehicle heat pump. More particularly, it relates to a refrigerant system module of a vehicle heat pump for minimizing heat transfer loss in a refrigerant system of a vehicle heat pump.

Under the trend of environment-friendly industrial development and the development of energy sources that replace fossil raw materials, electric vehicles and hybrid vehicles have recently received the most attention in the automobile industry. These electric and hybrid vehicles are equipped with batteries to provide driving power, and the batteries are used not only for driving, but also for heating and cooling.

In a vehicle that provides driving power using a battery, the fact that the battery is used as a heat source during heating and cooling means that the mileage is reduced as much as that. A method for applying it has been proposed.

For reference, a heat pump absorbs low-temperature heat and moves the absorbed heat to high-temperature. As an example, a heat pump has a cycle in which a liquid refrigerant evaporates in an evaporator, takes heat from the surroundings, becomes gas, and then liquefies while releasing heat to the surroundings by a condenser. When this is applied to an electric vehicle or a hybrid vehicle, there is an advantage in that it is possible to secure a heat source insufficient in a conventional air conditioning case.

1 is a view showing a circulation structure of a coolant in a conventional vehicle heat pump system.

Referring to FIG. 1 , in a conventional vehicle heat pump system, a refrigerant circulation line in which refrigerant circulates through a compressor 2 , a condenser 3 , an expansion valve 4 and a chiller 5 , and a cooling water exchanging heat with the refrigerant circulates. Cooling is carried out using a cooling water circulation line.

However, when applying such a secondary loop cooling system, there is a problem that the performance is lower than that of the direct cooling system. This is disadvantageous in terms of efficiency because it is a system that does not directly cool the air, but primarily cools the coolant and then cools the air with the coolant secondarily.

Therefore, various efforts are being made to minimize heat transfer loss.

The embodiment aims to make the arrangement of components efficient in order to prevent heat exchange between high-temperature and low-temperature components.

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

In an embodiment of the present invention, in a refrigerant system module of a vehicle heat pump using a refrigerant circulating in a compressor, a condenser, an evaporator, a chiller, and an accumulator, the refrigerant system module includes a first area where the outlet side of the compressor exists and the Refrigerant of a vehicle heat pump, characterized in that it is partitioned into a second area where the inlet side of the compressor exists, the condenser and the accumulator are disposed in the first area, and the chiller and the evaporator are disposed in the second area Provides system modules.

Preferably, the accumulator may be disposed between the condenser and the compressor.

Preferably, a third pipe through which the refrigerant flows and a fourth pipe through which the refrigerant flows are connected to the accumulator, and the fourth pipe is disposed closer to the compressor than the third pipe.

Preferably, the evaporator may be disposed between the chiller and the compressor.

Preferably, it may be characterized in that an internal heat exchanger is disposed inside the evaporator.

Preferably, the condenser, the evaporator and the chiller may be characterized in that the cooling water is arranged to move vertically.

Preferably, the evaporator includes a first coolant inlet and a first coolant outlet, a first coolant inlet and a first coolant outlet, wherein the first coolant inlet and the first coolant outlet face the inside of the coolant system module To do so, the first coolant inlet and the first coolant outlet may be disposed to face the outside of the refrigerant system module.

Preferably, the evaporator includes a 1-1 refrigerant inlet and a 1-1 refrigerant outlet through which the refrigerant flows into the internal heat exchanger, and the 1-1 refrigerant inlet and the 1-1 refrigerant outlet are It may be characterized in that the first refrigerant inlet and the first refrigerant outlet are disposed on the same surface.

Preferably, the refrigerant moving through the first refrigerant inlet and the first refrigerant outlet and the refrigerant moving through the 1-1 refrigerant inlet and the 1-1 refrigerant outlet are characterized in that they move in opposite directions. can

Preferably, a first expansion valve disposed in a longitudinal direction of the evaporator may be connected to the first refrigerant inlet of the evaporator.

Preferably, the chiller includes a second coolant inlet and a second coolant outlet, a second coolant inlet and a second coolant outlet, wherein the second coolant inlet and the second coolant outlet face the inside of the coolant system module To do so, the second coolant inlet and the second coolant outlet may be disposed to face the outside of the refrigerant system module.

Preferably, the second refrigerant inlet may be provided with a second expansion valve disposed in a longitudinal direction of the chiller.

According to the embodiment, there is an effect that the yaw loss can be prevented by rearranging the parts in which the high temperature refrigerant moves and the parts in which the low temperature refrigerant moves.

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

1 is a view showing a circulation structure of a coolant in a conventional vehicle heat pump system;
2 is a perspective view showing a configuration of a refrigerant system module of a vehicle heat pump according to an embodiment of the present invention;
Figure 3 is a view seen from the front of Figure 2,
4 is a view showing the structure of the chiller, which is a component of FIG. 2,
5 is a view showing the structure of the evaporator, which is a component of FIG. 2,
6 is a structural diagram of a vehicle heat pump system using the refrigerant system module of FIG.
7 is a view showing the operating state of the vehicle heat pump system in the cooling mode of FIG. 6;
8 is a view showing an operating state of the vehicle heat pump system in the heating mode of FIG. 6 .

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

However, the technical spirit of the present invention is not limited to some embodiments described, but may be implemented in various different forms, and within the scope of the technical spirit of the present invention, one or more of the components may be selected among the embodiments. It can be used by combining and substituted.

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention may be generally understood by those of ordinary skill in the art to which the present invention pertains, unless specifically defined and described explicitly. It may be interpreted as a meaning, and generally used terms such as terms defined in advance may be interpreted in consideration of the contextual meaning of the related art.

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

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

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

These terms are only used to distinguish the component from other components, and are not limited to the essence, order, or order of the component by the term.

And, when it is described that a component is '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 a case of 'connected', 'coupled' or 'connected' due to another element between the other elements.

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

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

2 to 8, 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 perspective view showing a configuration of a refrigerant system module of a vehicle heat pump according to an embodiment of the present invention, FIG. 3 is a view viewed from the front of FIG. 2, and FIG. 4 is a view showing the structure of a chiller that is a component of FIG. FIG. 5 is a diagram showing the structure of an evaporator, which is a component of FIG. 2 .

2 to 5 , the refrigerant system module 1 of the vehicle heat pump according to the embodiment of the present invention includes a compressor 110 , a condenser 120 , an evaporator 151 , a chiller 161 and an accumulator 170 . It relates to a refrigerant system for a vehicle heat pump using a circulating refrigerant, and has a characteristic in its arrangement structure.

A compressor 110 , a condenser 120 , an evaporator 151 , a chiller 161 , and an accumulator 170 may be disposed on the base plate 50 . The base plate 50 has components constituting the refrigerant system 1 disposed therein, and may be provided in a plate shape for stable support.

The compressor 110 is driven by receiving power from an engine (internal combustion engine) or a motor, sucking a refrigerant, compressing it, and then discharging it to the condenser 120 in a high-temperature and high-pressure gas state.

The refrigerant flowing through the condenser 120 moves to the first expansion valve 150 after heat exchange with the cooling water on the cooling water circulation line to be described later. As such, the cooling water heated by the refrigerant of the condenser 120 may be supplied to the indoor heat exchanger through the cooling water circulation line. In an embodiment, the condenser 120 may be a water-cooled condenser 120 .

The evaporator 151 is supplied with the refrigerant discharged from the first expansion valve 150, and air flowing through the air conditioning case through the blower passes through the evaporator 151 at low temperature and low pressure inside the evaporator 151. After heat exchange with the refrigerant is converted into cold air, it is discharged into the vehicle interior to cool the vehicle interior.

The chiller 161 is supplied with the low-temperature and low-pressure refrigerant discharged from the second expansion valve 160 and exchanges heat with the cooling water moving in the cooling water circulation line.

The accumulator 170 joins the refrigerant passing through the evaporator 151 and/or the chiller 161 , and separates the liquid refrigerant and the vapor refrigerant among the refrigerants so that only the vapor refrigerant can be supplied to the compressor 110 .

The compressor 110 may be divided into a first area S1 in which the outlet 111 side exists and a second area S2 in which the inlet 112 side of the compressor 110 exists. The first region S1 and the second region S2 shown in FIG. 3 separate a region in which a relatively high-temperature refrigerant moves and a region in which a low-temperature refrigerant moves, and does not mean an exact region.

A high-temperature refrigerant is discharged from the first region S1 in which the outlet 111 side of the compressor 110 exists, and in the second region S2 in which the inlet 112 side of the compressor 110 exists. Low-temperature refrigerant flows in (suction).

In this case, the condenser 120 and the accumulator 170 may be disposed in the first area S1 , and the chiller 161 and the evaporator 151 may be disposed in the second area S2 . Such a module structure can prevent heat exchange between parts through which high-temperature and low-temperature refrigerants move.

In one embodiment, the outlet of the compressor 110 and the inlet of the condenser 120 may be connected to the first pipe 10 , and the refrigerant derived from the condenser 120 is the chiller 161 through the second pipe 20 . ) and the evaporator 151 may be branched and introduced. The refrigerant flowing out from the chiller 161 and the refrigerant flowing out of the evaporator 151 are merged through the third pipe 30 and introduced into the accumulator 170 , and the refrigerant passing through the accumulator 170 is transferred to the fourth pipe 40 . ) through the inlet of the compressor 110 may be introduced.

The accumulator 170 may be disposed between the condenser 120 and the compressor 110 , and the fourth pipe 40 may be disposed to be adjacent to the compressor 110 rather than the third pipe 30 . This may increase the degree of superheat of the refrigerant moving toward the inlet of the compressor 110 , thereby increasing the degree of superheat of the refrigerant flowing into the compressor 110 .

Heat loss can be prevented by configuring the first pipe 10 and the condenser 120 through which the high-temperature refrigerant flows adjacent to each other, and the high-temperature refrigerant flows through the chiller 161 and the evaporator 151 through which the low-temperature refrigerant flows. Heat loss can be minimized by placing it on the opposite side of the

In addition, the evaporator 151 and the chiller 161 through which the low-temperature refrigerant moves may be disposed in the second region S2, and in this case, the evaporator 151 may be disposed between the chiller 161 and the compressor 110. have.

In the present invention, the condenser 120 , the evaporator 151 , and the chiller 161 are arranged so that the cooling water and the refrigerant move vertically to reduce the installation area.

The evaporator 151 may have an internal heat exchanger disposed therein to increase heat exchange efficiency between refrigerants. Since the internal heat exchanger 152 is integrally configured inside the evaporator 151 , pipes and parts necessary for connecting the internal heat exchanger 152 and the evaporator 151 in the related art can be omitted.

In one embodiment, the evaporator 151 includes a first coolant outlet 151f, a first coolant inlet 151e, a first coolant outlet 151a, a first coolant inlet 151b, and a 1-1 coolant inlet 151c. ) and a 1-1 refrigerant outlet (151d).

The 1-1 refrigerant inlet 151c and the 1-1 refrigerant outlet 151d through which the refrigerant flows into the internal heat exchanger 152 where heat exchange between the refrigerants occurs is a first refrigerant inlet 151b and the first refrigerant outlet 151a ) and the evaporator 151 may be disposed on the same side. At this time, the refrigerant moving through the first refrigerant inlet 151b and the first refrigerant outlet 151a and the refrigerant moving through the 1-1 refrigerant inlet 151c and the 1-1 refrigerant outlet 151d are opposite to each other. It is arranged to move in the direction to increase the heat exchange efficiency.

Cooling water flowing into the evaporator 151 for heat exchange may include a first coolant outlet 151f and a first coolant inlet 151e, and the first coolant outlet 151f and the first coolant inlet 151e are The coolant inlet 151b and the first coolant outlet 151a may be disposed in a direction opposite to the surface on which they are disposed.

In one embodiment, when the first refrigerant inlet 151b is disposed at the lower portion and the first refrigerant outlet 151a is disposed at the upper portion, the first coolant inlet 151e is disposed at the upper portion and the first coolant outlet 151f may be disposed at the bottom. This is to increase heat exchange efficiency while moving in opposite directions.

At this time, the first coolant inlet 151b and the first coolant outlet 151a face the inside of the coolant system module 1, and the first coolant inlet 151e and the first coolant outlet 151f are connected to the coolant system It may be arranged to face the outside of the module (1).

In addition, a first expansion valve 150 may be disposed at the first refrigerant inlet 151b.

In an embodiment, the first expansion valve 150 may be disposed in the longitudinal direction of the evaporator 151 . The first expansion valve 150 uses an electronic expansion valve, so that the opening/closing rate can be adjusted according to the heating/cooling driving mode without a check valve. The first expansion valve 150 may be directly connected to the evaporator 151 to minimize heat loss occurring when moving along the pipe.

The chiller 161 may include a second coolant inlet 161c, a second coolant outlet 161d, a second coolant inlet 161b, and a second coolant outlet 161a.

At this time, the second coolant inlet 161c and the second coolant outlet 161d are disposed on one side of the chiller 161 , and the second coolant inlet 161b and the second coolant outlet 161a are disposed on the other side of the chiller 161 . can

In one embodiment, when the second coolant inlet 161b is disposed on the lower side and the second coolant outlet 161a is disposed on the upper side, the second coolant inlet 161c is disposed on the upper side, and the second coolant outlet 161d is disposed on the upper side It can be arranged on the lower side to increase the heat exchange efficiency.

In addition, the second coolant inlet 161c and the second coolant outlet 161d are formed such that the second coolant inlet 161b and the second coolant outlet 161a face the inside of the coolant system module 1 , and the second coolant inlet 161c and the second coolant outlet 161d are It may be disposed to face the outside of the refrigerant system module (1).

A second expansion valve 160 may be disposed at the second refrigerant inlet 161b.

In an embodiment, the second expansion valve 160 may be disposed in the longitudinal direction of the evaporator 151 . The second expansion valve 160 uses an electronic expansion valve, so that the opening and closing rate can be adjusted according to the heating/cooling driving mode without a check valve. The second expansion valve 160 is directly connected to the evaporator 151 to minimize heat loss that occurs when moving along the pipe.

In addition, in the present invention, the first coolant inlet 151e and the first coolant outlet 151f are formed so that the first coolant inlet 151b and the first coolant outlet 151a face the inside of the coolant system module 1 . The second coolant inlet 161c is disposed to face the outside of the coolant system module 1, and the second coolant inlet 161b and the second coolant outlet 161a face the inside of the coolant system module 1 and the second coolant outlet 161d may be disposed to face the outside of the refrigerant system module 1 . Through this, it is possible to reduce the length of the refrigerant pipe when the cooling system module 1 is configured.

6 is a structural diagram of a vehicle heat pump system using the refrigerant system module of FIG. 2 , FIG. 7 is a view showing an operating state of the vehicle heat pump system in the cooling mode of FIG. 6 , and FIG. 8 is a vehicle heat pump system in the heating mode of FIG. It is a diagram showing the operating state of the heat pump system.

6 to 8 , a vehicle heat pump system using a refrigerant system module according to an embodiment of the present invention will be described.

Referring to FIG. 6 , in the vehicle heat pump system using the refrigerant system module according to the embodiment of the present invention, a refrigerant circulation line 100 in which a refrigerant circulates to cool a room and a coolant is circulated to heat the room and cool the parts. It may be composed of a cooling water circulation line 200 . In addition, the cooling water circulation line 200 may include a heating line 210 for indoor heating and a cooling line 230 for cooling the electric component 231 and the battery 237 .

The refrigerant circulation line 100 is branched to one side from the compressor 100, the condenser 120, the refrigerant branch 101, and the refrigerant branch 101 and passes through the first expansion valve 150 and the evaporator 151. The first refrigerant line 100a and the second refrigerant line 100b, which branch to the other side from the refrigerant branch 101 and pass through the second expansion valve 160 and the chiller 161, the first refrigerant line 100a and The second refrigerant line 100b may include an accumulator 170 through which the refrigerant passes. The refrigerant that has passed through the accumulator 170 is re-introduced into the compressor 100 to cause refrigerant circulation.

At this time, an internal heat exchanger 152 is disposed in the first refrigerant line 100a , and the refrigerant heat exchanger is disposed between the refrigerant branch 101 and the first expansion valve 150 , and is introduced into the first expansion valve 150 . The refrigerant to be used and the refrigerant that has passed through the evaporator 151 may exchange heat.

The compressor 100 is driven by receiving power from an engine (internal combustion engine) or a motor, sucking a refrigerant, compressing it, and then discharging it to the condenser 120 in a high-temperature and high-pressure gas state.

The condenser 120 serves as the condenser 120 in both the cooling mode and the heating mode. The refrigerant flowing through the condenser 120 exchanges heat with the cooling water on the cooling water circulation line 200 to be described later, and then moves to the first expansion valve 150 . As such, the cooling water heated by the refrigerant of the condenser 120 may be supplied to the indoor heat exchanger through the cooling water circulation line 200 . In an embodiment, the condenser 120 may be a water-cooled condenser 120 .

The refrigerant branching unit 101 branches the refrigerant into the first refrigerant line 100a and the second refrigerant line 100b.

A first expansion valve 150 and an evaporator 151 may be disposed in the first refrigerant line 100a.

The first expansion valve 150 may serve to throttle or bypass the refrigerant flowing in from the first refrigerant line 100a or block the flow of the refrigerant, and the inlet of the evaporator 151 in the refrigerant flow direction. can be placed on the side.

The evaporator 151 is installed inside the air conditioning case, is disposed in the first refrigerant line 100a, the refrigerant discharged from the first expansion valve 150 is supplied, and air flowing through the air conditioning case through the blower In the process of passing through the evaporator 151 , heat exchange with the low-temperature and low-pressure refrigerant inside the evaporator 151 is changed to cool air, and then it is discharged into the vehicle interior to cool the vehicle interior.

A second expansion valve and a chiller 161 may be disposed in the second refrigerant line 100b.

The second expansion valve 160 may serve to throttle or bypass the refrigerant flowing in from the second refrigerant line 100b or block the flow of the refrigerant, and the inlet of the chiller 161 in the refrigerant flow direction. can be placed on the side.

The chiller 161 is supplied with the low-temperature and low-pressure refrigerant discharged from the second expansion valve 160 and exchanges heat with the cooling water moving in the cooling water circulation line 200 . The cold coolant heat-exchanged in the chiller 161 may be circulated through the coolant circulation line 200 to exchange heat with the high-temperature battery 237 . That is, the battery 237 is not heat-exchanged with the refrigerant but heat-exchanged with the coolant.

The accumulator 170 is installed on the inlet side of the compressor 100 so that the refrigerant passing through the evaporator 151 and/or the chiller 161 joins, and separates the liquid refrigerant and the vapor refrigerant among the refrigerants to separate the vapor refrigerant from the compressor 100 ) to be supplied.

The internal heat exchanger 152 serves to heat-exchange the refrigerant flowing into the first expansion valve 150 and the refrigerant discharged from the evaporator 151 to improve cooling performance. Here, the internal heat exchanger 152 passes through an inlet refrigerant line through which the refrigerant flows into the evaporator 151 connecting the refrigerant branch 101 and the first expansion valve 150 , and the evaporator 151 and the accumulator 170 . ), the discharge-side refrigerant line through which the refrigerant is discharged from the evaporator 151 connecting the evaporator 151 passes, and heat exchange may occur between the refrigerants passing through the inlet-side refrigerant line and the discharge-side refrigerant line.

Thus, the refrigerant may be further cooled before being introduced into the first expansion valve 150 by the internal heat exchanger 152 , and the cooling performance through the evaporator 151 may be improved and the efficiency of the cooling system may be improved. In particular, the internal heat exchanger 152 is connected in parallel with the chiller 161 .

That is, the internal heat exchanger 152 is not arranged in series in the refrigerant line between the condenser 120 and the chiller 161, but is arranged adjacent to the evaporator 151 so that the internal heat exchanger 152 and the evaporator 151 are arranged in series. and can be connected. If the refrigerant heat exchanger is disposed in series between the water-cooled condenser 120 and the chiller 161 , it acts as a pressure drop on the low pressure side in the heating mode, thereby reducing heating performance. Conversely, when the refrigerant heat exchangers are connected in parallel, the cooling performance as well as the heating performance are increased because there is no refrigerant heat exchanger between the condenser 120 and the chiller 161 in the refrigerant flow in the heating mode.

In one embodiment, the internal heat exchanger 152 may be inserted and disposed inside the evaporator 151 to be provided integrally with the evaporator 151 .

The cooling water circulation line 200 may include a heating line 210 for indoor heating, a cooling line 230 for cooling the electronic components 231 and the battery 237 , and a second cooling line.

Here, the secondary cooling line 250 may include an evaporator 151 , a cabin cooler 252 , and a fourth pump 251 . Here, the coolant line connected to the evaporator 151 , the cabin cooler 252 , and the fourth pump 251 may form a closed loop.

As described above, the evaporator 151 may exchange heat with each other while passing the refrigerant and the coolant.

The cabin cooler 252 serves as the air-cooled evaporator 151 , and the cooled coolant passes through heat exchange with the refrigerant passing through the evaporator 151 . In addition, the cabin cooler 252 is disposed inside the air conditioner 180, and the air flowing by the blower of the air conditioner 180 is cooled through the cabin cooler 252 and supplied to the interior of the vehicle, thereby cooling the interior of the vehicle. can be used for

The fourth pump 251 serves to pressurize the cooling water so that the cooling water is circulated along the secondary cooling line 250 . In addition, the fourth pump 251 may be installed on the coolant line between the evaporator 151 and the cabin cooler 252 to circulate the coolant by the operation of the fourth pump 251 .

Thus, in the vehicle heat pump system of the present invention, as the secondary cooling line 250 using coolant is applied for cooling the vehicle interior, the refrigerant circulation line 100 through which the refrigerant is circulated is not arranged inside the vehicle but outdoors. As a result, the length of the refrigerant pipe is reduced to reduce the amount of refrigerant, and there is an advantage in that the components of the refrigerant circulation line 100 can be modularized. In addition, since a high-efficiency natural refrigerant can be used as the refrigerant used in the refrigerant circulation line 100 , the efficiency of the thermal management system is improved.

The heating line 210 may include a condenser 120 , a first pump 211 , a coolant heater 212 , a heater core 213 , and a first direction switching valve 214 .

As described above, the condenser 120 may exchange heat with each other while passing the refrigerant and the coolant.

The first pump 211 is a means for pumping cooling water so that the cooling water is circulated along the heating line 210 , and the first pump 211 is disposed at the rear of the condenser 120 in the flow direction of the cooling water and is on the cooling water line. can be installed.

The coolant heater 212 is a device for heating coolant, and may be disposed and connected to the rear of the first pump 211 and the front of the heater core 213 in the coolant flow direction. In addition, the coolant heater 212 may be operated when the temperature of the coolant is below a specific temperature, and various configurations such as an induction heater, a sheath heater, a PTC heater, and a film heater that can generate heat using electric power may be used.

The heater core 213 may be disposed in the air conditioner 180 of the vehicle, and the air flowing by the blower is heated through the heater core 213 and supplied to the interior of the vehicle to be used for indoor heating of the vehicle. . In addition, the heater core 213 may be disposed and connected to the rear of the coolant heater 212 in the coolant flow direction.

The first direction switching valve 214 may be installed between the heater core 213 and the condenser 120 , and selectively connects or blocks the heating line 210 and the cooling line 230 to be described later. can be configured to

In more detail, the first directional switching valve 214 is installed on the heating line 210 so that two cooling water line pipes are connected to the first directional switching valve 214 , and one branched from one side of the cooling line 230 . One first connection line 221 may be connected to the first directional selector valve 214 , and one second connecting line branched from the other side of the cooling line 230 may be connected to the first directional selector valve 214 . . That is, in the first directional switching valve 214 , the four coolant lines are connected to meet, and the first directional switching valve 214 is a four-way directional change that can control the state in which the four coolant lines are connected or blocked. It could be a valve.

The cooling line 230 includes a radiator 233 , a second directional selector valve 238 , a second pump 239 , a first directional selector valve 214 , an electrical component 231 , a first coolant joint 235 , It may include a second coolant joint 232 , a third pump 236 , a battery 237 , a chiller 161 , and a third direction switching valve 234 .

The radiator 233 cools the coolant heat-exchanged with the electric component 231 or the battery 237 , and the radiator 233 may be cooled by air cooling by the cooling fan 233a.

The second directional switching valve 238 is installed on the cooling line 230 so that two cooling water pipes are connected to the second directional switching valve 238 and the heating line 210 and the cooling line 230 are connected. The first direction selector valve 214 and the second direction selector valve 238 may be connected to each other through the first connection line 221 .

That is, the second directional switching valve 238 is connected so that three coolant lines meet, and the second directional switching valve 238 is a three-way switching valve that can control the state in which the three coolant lines are connected or blocked. It could be a valve.

The second pump 239 is a means for pressurizing the cooling water so that the cooling water is circulated along the cooling line 230 . And the second pump 239 is installed on the first connection line 221 between the first directional selector valve 214 and the second directional selector valve 238, by the operation of the second pump 239 Cooling water may flow from the second directional selector valve 238 toward the first directional selector valve 214 .

The first direction switching valve 214 is the same as described in the heating line 210 described above.

The electrical component 231 is disposed on the second connection line 222 connecting the first direction switching valve 214 and the second cooling water joint 232 , so that the electrical component 231 can be cooled by the cooling water. . In addition, the electronic component 231 may be a driving motor, an inverter, an on-board charger (OBC), or the like.

The third pump 236 is a means for pressurizing the cooling water so that the cooling water is circulated along the cooling line 230 . In addition, the third pump 236 is installed in the coolant line between the first coolant joint 235 and the battery 237 so that coolant can flow from the third pump 236 to the battery 237 .

The battery 237 is a power source of the vehicle, and may be a driving source of various electronic components 231 in the vehicle. In addition, the battery 237 may serve to store electricity by being connected to the fuel cell, or may serve to store electricity supplied from the outside. And the battery 237 may be disposed on the coolant line between the third pump 236 and the third direction switching valve 234 . Thus, the battery 237 may be cooled or heated by heat exchange with the flowing coolant.

The first coolant joint 235 is installed in the coolant line at the rear of the second directional switching valve 238 in the coolant flow direction, and the first coolant joint 235 is connected so that three coolant lines meet. That is, the first cooling water joint 235 may be installed so that both sides are connected to the cooling line 230 , and the third connection line 223 may be connected to the lower side thereof. Here, the third connection line 223 may be connected to pass through the chiller 161 .

The second coolant joint 232 may be installed at a point where the rear end of the second connection line 222 meets the cooling line 230 , and is connected so that three coolant lines meet at the second coolant joint 232 . That is, the second cooling water joint 232 may be installed so that both sides are connected to the cooling line 230 , and the second connection line 222 may be connected to the upper side thereof.

The chiller 161 is the same as described in the heating line 210 described above.

The third directional valve 234 is installed on the coolant line between the battery 237 and the second coolant joint 232 , and two coolant pipes are connected to the third directional valve 234 , and the third direction The third connection line 223 is connected to the upper side of the switching valve 234 so that the battery 237 and the third connection line 223 are connected in parallel. In this case, the second direction switching valve 238 may be a three-way switching valve capable of controlling a state in which the three coolant lines are connected to each other or blocked.

In addition, a blower is installed on one side of the air conditioner 180 to blow air, and a temperature control door may be installed inside the air conditioner 180 . In addition, the evaporator 151 and the heater core 213 disposed in the air conditioner 180 allow the air discharged from the blower to pass through the evaporator 151 only and then flow into the room according to the operation of the temperature control door, or the evaporator 151 ), it may be disposed and configured to pass through the heater core 213 and be introduced into the room.

7 is a view showing an operating state of the vehicle heat pump system in the cooling mode of FIG. 6 .

Referring to FIG. 7 , in the refrigerant circulation line 100 , the compressor 100 operates to discharge the high-temperature and high-pressure refrigerant from the compressor 100 . And the refrigerant discharged from the compressor 100 is cooled by heat exchange with the cooling water in the condenser 120 . Subsequently, the refrigerant cooled and condensed in the water-cooled condenser 120 is then throttled while passing through the first expansion valve 150 in the refrigerant branch 101 to expand the refrigerant, and then the expanded refrigerant passes through the evaporator 151 . It exchanges heat with the cooling water of the secondary cooling line 250 , and the cooling water of the secondary cooling line 250 is cooled by the refrigerant.

In addition, the refrigerant evaporated in the evaporator 151 passes through the internal heat exchanger 152 , exchanges heat with the refrigerant before flowing into the first expansion valve 150 , and then flows back into the compressor 100 through the accumulator 170 .

At this time, in the second refrigerant line 100b branched from the refrigerant branching unit 101 , the second expansion valve 160 may be closed so that the refrigerant may not move.

In addition, in the secondary cooling line 250 , the cooling water is circulated by the operation of the fourth pump 251 . In addition, as the cooling water passes through the cabin cooler 252 , the air is cooled while exchanging heat with the air blown by the blower of the air conditioner 180 , and the cooled air is supplied to the interior of the vehicle to perform indoor cooling.

Meanwhile, the cooling water of the cooling water circulation line 200 is circulated by the operation of the first pump 211 , the second pump 239 , and the third pump 236 . And the refrigerant passing through the condenser 120, the electric component 231, and the battery 237 can be cooled by the cooling water, and the heated cooling water is external by the operation of the cooling fan 233a in the electric radiator 233. It can be cooled by heat exchange with air.

In this case, the first directional switching valve 214 and the second directional switching valve 238 may be adjusted in a direction connecting the heating line 210 and the cooling line 230 . In more detail, the upper side and the left side of the first directional switching valve 214 may be connected to each other to flow cooling water, and the lower side and the right side may be connected to each other to flow the cooling water. And the second direction switching valve 238 may have a left side and a lower side connected to each other so that coolant flows and the right side may be disconnected. In addition, the third direction switching valve 234 may have an upper side and a right side connected to each other, and the left side may be blocked.

Thus, the coolant is discharged from the electric radiator 233, the second directional valve 238, the second pump 239, the first directional valve 214, the condenser 120, the first pump 211, the coolant heater ( 212), the heater core 213, the first directional switching valve 214, the electrical components 231, and the second coolant joint 232 in order, and the cycle is repeated by flowing into the electrical radiator 233 again. do.

Cooling water does not flow from the second directional selector valve 238 to the first cooling water joint 235 by the second directional selector valve 238 , and the third directional selector valve 234 by the third directional selector valve 234 ) to the second coolant joint 232 , the coolant may not flow.

8 is a view showing an operating state of the vehicle heat pump system in the heating mode of FIG. 6 .

Referring to FIG. 8 , in the heating mode, the compressor 100 operates in the refrigerant circulation line 100 to discharge the high-temperature and high-pressure refrigerant from the compressor 100 . And the refrigerant discharged from the compressor 100 is cooled by heat exchange with the cooling water in the condenser 120 .

The first expansion valve 150 is closed so that the refrigerant does not pass through the first refrigerant line 100a in which the internal heat exchanger 152 and the evaporator 151 are disposed, and the refrigerant passes through the refrigerant branch unit 101 to expand the third It flows into the chiller 161 through the valve, and in the chiller 161, the refrigerant and the cooling water exchange heat to heat the refrigerant.

The refrigerant that has passed through the chiller 161 flows back into the compressor 100 through the accumulator 170 .

In addition, since the fourth pump 251 is not operated in the secondary cooling line 250 , the cooling water may not flow in the secondary cooling line 250 .

Meanwhile, the cooling water of the cooling water circulation line 200 is circulated by the operation of the first pump 211 , the second pump 239 , and the third pump 236 . And the cooling water may be heated while passing through the condenser 120 , heated by the cooling water heater 212 , heated by the heat of the electric component 231 and the battery 237 , and cooled while passing through the chiller 161 . have.

In this case, the first directional switching valve 214 and the second directional switching valve 238 may be adjusted in a direction to separate the heating line 210 and the cooling line 230 . In more detail, the upper and right sides of the first directional switching valve 214 may be connected to each other to flow coolant, and the lower and left sides may be connected to each other to flow coolant. And the second direction switching valve 238 may have a right side and a lower side connected to each other so that coolant flows and the left side may be disconnected.

Thus, the cooling water of the heating line 210 passes through the first pump 211, the cooling water heater 212, the heater core 213, the first directional switching valve 214, and the condenser 120 in order, and then back to the first pump ( 211) and the cycle is repeated.

And the cooling water of the cooling line 230 separated from the heating line 210 is from the second pump 239 to the first direction switching valve 214 , the electrical components 231 , the second cooling water joint 232 , and the third direction. It moves to the selector valve 234, and the third direction selector valve 234 may be connected to both the upper side and the left and right sides.

The refrigerant circulated through the third pump 236 moves to the third direction switching valve 234 through the battery 237 , joins with the refrigerant that has passed through the electrical component 231 and moves toward the chiller 161 . . The coolant cooled by the chiller 161 is branched and moved at the first coolant joint 235 .

As described above, the embodiments of the present invention have been described in detail with reference to the accompanying drawings.

The above description is merely illustrative of the technical idea of the present invention, and various modifications, changes, and substitutions are possible within the range that does not depart from the essential characteristics of the present invention by those of ordinary skill in the art to which the present invention pertains. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are for explaining, not limiting, the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments and the accompanying drawings. . The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

1: refrigerant system module 10: first pipe
20: second pipe 30: third pipe
40: fourth pipe 50: base plate
100: refrigerant circulation line 100a: first refrigerant line
100b: second refrigerant line 101: refrigerant branch
110: compressor 111: outlet
112: inlet 120: condenser
150: first expansion valve 151: evaporator
151a: first refrigerant outlet 151b: first refrigerant inlet
151c: 1-1 refrigerant inlet 151d: 1-1 refrigerant outlet
151e: first coolant inlet 151f: first coolant outlet
152: internal heat exchanger 160: second expansion valve
161: chiller 161a: second refrigerant outlet
161b: second coolant inlet 161c: second coolant inlet
161d: second coolant outlet
170: accumulator 180: air conditioner
200: cooling water circulation line 210: heating line
211: first pump 212: coolant heater
213: heater core 214: first directional switching valve
221: first connection line 222: second connection line
223: third connection line 230: cooling line
231: electronic parts 232; 2nd coolant joint
233: radiator 233a: cooling fan
234: third direction switching valve 235: first cooling water joint
236: third pump 237: battery
238: second directional valve 239: second pump
250: secondary cooling line 251: fourth pump
252: cabin cooler S1: first area
S2: second area

Claims (12)

In the refrigerant system module of a vehicle heat pump using a refrigerant circulating in a compressor, a condenser, an evaporator, a chiller, and an accumulator,
The refrigerant system module is
It is divided into a first area where the outlet side of the compressor exists and a second area where the inlet side of the compressor exists,
The condenser and the accumulator are disposed in the first area,
The refrigerant system module of the vehicle heat pump, characterized in that the chiller and the evaporator are disposed in the second area. According to claim 1,
The accumulator is a refrigerant system module for a vehicle heat pump, characterized in that it is disposed between the condenser and the compressor. 3. The method of claim 2,
A third pipe through which the refrigerant flows and a fourth pipe through which the refrigerant flows are connected to the accumulator, and the fourth pipe is disposed closer to the compressor than the third pipe. . According to claim 1,
The evaporator is a refrigerant system module for a vehicle heat pump, characterized in that disposed between the chiller and the compressor. 5. The method of claim 4,
A refrigerant system module for a vehicle heat pump, characterized in that an internal heat exchanger is disposed inside the evaporator. 6. The method according to any one of claims 1 to 5,
The refrigerant system module of the vehicle heat pump, characterized in that the condenser, the evaporator, and the chiller are arranged to vertically move the coolant. 6. The method of claim 5,
The evaporator includes a first coolant inlet, a first coolant outlet, a first coolant inlet and a first coolant outlet,
The first coolant inlet and the first coolant outlet are disposed to face the inside of the coolant system module, and the first coolant inlet and the first coolant outlet are disposed to face the outside of the coolant system module. Refrigerant system module of heat pump. 8. The method of claim 7,
The evaporator has a 1-1 refrigerant inlet and a 1-1 refrigerant outlet through which the refrigerant flows into the internal heat exchanger,
The refrigerant system module of the vehicle heat pump, characterized in that the 1-1 refrigerant inlet and the 1-1 refrigerant outlet are disposed on the same surface as the first refrigerant inlet and the first refrigerant outlet. 9. The method of claim 8,
The refrigerant moving through the first refrigerant inlet and the first refrigerant outlet and the refrigerant moving through the 1-1 refrigerant inlet and the 1-1 refrigerant outlet move in opposite directions to each other. Refrigerant system module. 8. The method of claim 7,
A refrigerant system module for a vehicle heat pump, characterized in that a first expansion valve disposed in a longitudinal direction of the evaporator is connected to the first refrigerant inlet of the evaporator. 7. The method of claim 6,
The chiller includes a second coolant inlet, a second coolant outlet, a second coolant inlet and a second coolant outlet,
The second coolant inlet and the second coolant outlet are disposed to face the inside of the coolant system module, and the second coolant inlet and the second coolant outlet are disposed to face the outside of the coolant system module. Refrigerant system module of heat pump. 12. The method of claim 11,
The refrigerant system module of the vehicle heat pump, characterized in that the second refrigerant inlet is provided with a second expansion valve disposed in the longitudinal direction of the chiller.

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