KR102723814B1 - Heat pump system for vehicle - Google Patents

Abstract

The present invention relates to a vehicle heat pump system that integrates a main air conditioning unit and an auxiliary air conditioning unit, has a compact structure, and a shortened refrigerant path, and comprises a main air conditioning unit equipped with an indoor heat exchanger that radiates heat of a high-temperature refrigerant to heat a interior, and an evaporator that absorbs heat of outside air into condensed low-temperature refrigerant to cool a interior; and an auxiliary air conditioning unit equipped with an outdoor heat exchanger that is detachably connected to the main air conditioning unit and takes in vehicle engine room air when heating, or takes in vehicle outside air when cooling.

Description

Heat pump system for vehicle

The present invention relates to a heat pump system for a vehicle.

An air conditioning system for a vehicle typically includes a cooling system for cooling the interior of the vehicle and a heating system for heating the interior of the vehicle.

The above cooling system is configured to cool the interior of a vehicle by exchanging heat between air passing through the exterior of the evaporator on the evaporator side of the refrigerant cycle and the refrigerant flowing inside the evaporator to convert it into cold air, and the above heating system is configured to heat the interior of a vehicle by exchanging heat between air passing through the exterior of the heater core on the heater core side of the coolant cycle and the coolant flowing inside the heater core to convert it into warm air.

Meanwhile, a heat pump system is being applied that can selectively perform cooling and heating by switching the flow direction of the refrigerant using one refrigerant cycle, which is different from the above-mentioned vehicle air conditioning device, and for example, it has two heat exchangers (i.e., an indoor heat exchanger installed inside the air conditioning case for heat exchange with air blown into the vehicle interior, and an outdoor heat exchanger for heat exchange outside the air conditioning case) and a direction changing valve that can switch the flow direction of the refrigerant.

Accordingly, when the cooling mode is operated according to the flow direction of the refrigerant by the direction changing valve, the indoor heat exchanger functions as a cooling heat exchanger, and when the heating mode is operated, the indoor heat exchanger functions as a heating heat exchanger.

Various types of vehicle heat pump systems have been proposed, and a representative example is shown in Fig. 1.

The vehicle heat pump system illustrated in Fig. 1 comprises a compressor (30) that compresses and discharges refrigerant, an indoor heat exchanger (32) that dissipates heat from the refrigerant discharged from the compressor (30), a first expansion valve (34) and a first bypass valve (36) that are installed in a parallel structure to selectively pass the refrigerant that has passed through the indoor heat exchanger (32), an outdoor heat exchanger (48) that exchanges heat with the refrigerant that has passed through the first expansion valve (34) or the first bypass valve (36) outdoors, an evaporator (60) that evaporates the refrigerant that has passed through the outdoor heat exchanger (48), an accumulator (62) that separates the refrigerant that has passed through the evaporator (60) into gaseous and liquid refrigerants, a second expansion valve (56) that selectively expands the refrigerant supplied to the evaporator (60), and the It comprises a second bypass valve (58) installed in parallel with the second expansion valve (56) and selectively connecting the outlet side of the outdoor heat exchanger (48) and the inlet side of the accumulator (62).

In Fig. 1, drawing symbol 10 represents an air conditioning case in which the indoor heat exchanger (32) and the evaporator (60) are built in, drawing symbol 12 represents a temperature control door for controlling the amount of cold air and hot air mixed together, and drawing symbol 20 represents a blower installed at the inlet of the air conditioning case.

According to the conventional vehicle heat pump system configured as described above, when the heat pump mode (heating mode) is operated, the first bypass valve (36) and the second expansion valve (56) are closed, and the first expansion valve (34) and the second bypass valve (58) are opened. In addition, the temperature control door (12) operates as in Fig. 1. Accordingly, the refrigerant discharged from the compressor (30) passes through the indoor heat exchanger (32), the first expansion valve (34), the outdoor heat exchanger (48), the second bypass valve (58), and the accumulator (62) in that order and then returns to the compressor (30). That is, the indoor heat exchanger (32) functions as a heater, and the outdoor heat exchanger (48) functions as an evaporator.

When the air conditioner mode (cooling mode) is operated, the first bypass valve (36) and the second expansion valve (56) are opened, and the first expansion valve (34) and the second bypass valve (58) are closed. In addition, the temperature control door (12) closes the passage of the indoor heat exchanger (32). Accordingly, the refrigerant discharged from the compressor (30) sequentially passes through the indoor heat exchanger (32), the first bypass valve (36), the outdoor heat exchanger (48), the second expansion valve (56), the evaporator (60), and the accumulator (62) and then returns to the compressor (30). That is, the evaporator (60) functions as an evaporator, and the indoor heat exchanger (32) closed by the temperature control door (12) functions as a heater in the same manner as in the heat pump mode.

In conventional heat pump systems, the outdoor heat exchanger is located on the bumper side of the vehicle, and there is the inconvenience of having to remove the bumper of the vehicle to maintain the outdoor heat exchanger. In addition, there is a problem of the pressure drop of the refrigerant occurring as the distance between the outdoor heat exchanger and the air conditioning case (with indoor heat exchanger and evaporator) increases.

Japanese Patent Publication No. 2011-001869 (published on January 6, 2011)

The present invention has been devised to solve the problems described above, and the purpose is to provide a vehicle heat pump system in which the arrangement structure of an outdoor heat exchanger is improved to increase the accessibility of the outdoor heat exchanger and the circulation structure of the refrigerant is simplified.

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

According to one aspect of the present invention for achieving the above-mentioned purpose, a vehicle heat pump system includes a main air conditioner having an indoor heat exchanger for radiating heat of a high-temperature refrigerant to heat a room, an evaporator for cooling a room by absorbing heat of outside air into condensed low-temperature refrigerant, and an auxiliary air conditioner having an outdoor heat exchanger detachably connected to the main air conditioner and for taking in vehicle engine room air during heating or taking in vehicle outside air during cooling.

According to an embodiment, a first coupling part may be formed in the main air conditioner, and a second coupling part coupled with the first coupling part may be formed in the auxiliary air conditioner.

According to an embodiment, the vehicle heat pump system may further include a coupling means for removably coupling the first coupling portion and the second coupling portion.

According to an embodiment, the coupling means may include a mounting pin that penetrates and couples the first coupling portion and the second coupling portion.

According to an embodiment, the coupling means may include a clamp member that fastens and couples the first coupling portion and the second coupling portion.

According to an embodiment, the first coupling portion includes one of a groove or a projection, and the second coupling portion includes the other of a groove or a projection corresponding to a shape of the first coupling portion, so that the first coupling portion and the second coupling portion can be fit-fitted.

According to an embodiment, the main air conditioner includes a main air conditioner housing having an air intake port and an air outlet port and forming an air path, and the main air conditioner housing may include: an intake port formed with the air intake port and guiding air sucked through the air intake port to the indoor heat exchanger and the evaporator; an air conditioning unit in which the indoor heat exchanger and the evaporator are arranged; and an exhaust port formed with the air outlet port and guiding air passing through the main air conditioner module to the air outlet port.

According to an embodiment, the air conditioning unit may have the first coupling unit formed on one surface facing the main air conditioning unit.

According to an embodiment, the suction unit can suck in outside air of the vehicle.

According to an embodiment, the main air conditioning housing may further include an outside air delivery unit branched from the suction unit and delivering a portion of the outside air sucked into the suction unit to the auxiliary air conditioning unit.

According to an embodiment, the auxiliary air conditioning device includes an auxiliary air conditioning housing including an inlet portion into which outside air or inside air of the vehicle is introduced, and a body portion in which the outdoor heat exchanger is arranged, and the inlet portion can have outside air of the vehicle introduced to one side and inside air of the vehicle introduced to the other side and transmitted to the body portion.

According to an embodiment, the inlet portion is formed in a shape that branches into two sides, and one side can be connected to the outside air transmission portion.

In some embodiments, the outdoor heat exchanger may be positioned lower than the evaporator.

The vehicle heat pump system according to the present invention integrates a main air conditioning unit and an auxiliary air conditioning unit, thereby enabling a compact structure of the vehicle heat pump system, and shortening the path of the refrigerant to alleviate the pressure drop phenomenon of the refrigerant.

According to the vehicle heat pump system according to the present invention, the outdoor heat exchanger can be placed near the main air conditioner where it is relatively easy to access, thereby increasing the convenience of maintenance work.

The vehicle heat pump system according to the present invention can improve the heat dissipation performance of the outdoor heat exchanger and enhance the cooling efficiency by arranging the outdoor heat exchanger below the evaporator and inducing heat dissipation of the outdoor heat exchanger using the condensate of the evaporator.

Figure 1 is a schematic diagram showing a conventional vehicle heat pump system.
FIG. 2 is a configuration diagram showing a vehicle heat pump system according to one embodiment of the present invention;
Figure 3 is a configuration diagram showing the operating state during cooling of a vehicle heat pump system according to one embodiment of the present invention.
Figure 4 is a configuration diagram showing the operating state of a vehicle heat pump system during heating in one embodiment of the present invention.
Figure 5 is a perspective view showing a combined state of a main air conditioning unit and an auxiliary air conditioning unit in a vehicle heat pump system according to the present invention.
Figure 6 is an exploded perspective view showing the main air conditioning unit and the auxiliary air conditioning unit separated in a vehicle heat pump system according to the present invention.
Figure 7 is a perspective view showing the main air conditioning unit in a vehicle heat pump system according to the present invention.
Fig. 8 is an enlarged drawing of the first joint portion in Fig. 7.
Figure 9 is a perspective view showing an auxiliary air conditioning device in a vehicle heat pump system according to the present invention.

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

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

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention can be interpreted as having a meaning that can be generally understood by a person of ordinary skill in the technical field to which the present invention belongs, unless explicitly and specifically defined and described, and terms that are commonly used, such as terms defined in a dictionary, can be interpreted in consideration of the contextual meaning of the relevant technology.

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

In this specification, the singular may also include the plural unless specifically stated otherwise in the phrase, and when it is described as "A and (or at least one) of B, C", it may include one or more of all combinations that can be combined with A, B, C.

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

These terms are only intended to distinguish one component from another, and are not intended to limit the nature, order, or sequence of the component.

And, when a component is described as being 'connected', 'coupled' or 'connected' to another component, it may include not only cases where the component is directly connected, coupled or connected to the other component, but also cases where the component is 'connected', 'coupled' or 'connected' by another component between the component and the other component.

In addition, when described as being formed or arranged "above or below" each component, above or below includes not only the case where the two components are in direct contact with each other, but also the case where one or more other components are formed or arranged between the two components. In addition, when expressed as "above or below", it can include the meaning of the downward direction as well as the upward direction based on one component.

Hereinafter, a vehicle heat pump system according to one embodiment of the present invention will be described with reference to FIG. 2.

Figure 2 is a configuration diagram of a vehicle heat pump system according to the present invention.

Referring to FIG. 2, the vehicle heat pump system includes a compressor (100), an indoor heat exchanger (110), a first expansion valve (120), an outdoor heat exchanger (130), a second expansion valve (140), a third expansion valve (150), an evaporator (160), and a chiller (190) that are sequentially connected on a refrigerant circulation line (R).

In addition, the vehicle heat pump system may include a main air conditioning unit (1000) in which the indoor heat exchanger (110) and the evaporator (160) are installed, and an auxiliary air conditioning unit (2000) in which the outdoor heat exchanger (130) is installed.

The above compressor (100) is installed on a refrigerant circulation line (R) through which refrigerant circulates and compresses the refrigerant. At this time, the compressor (100) discharges high-temperature, high-pressure refrigerant.

The indoor heat exchanger (110) exchanges heat with the refrigerant discharged from the compressor (100). The indoor heat exchanger (110) is placed inside the main air conditioner (1000) and is provided at the rear side of the evaporator (160) to heat the air discharged into the vehicle interior. That is, the indoor heat exchanger (110) performs heating. At this time, the air flow passing through the indoor heat exchanger (1110) can be controlled by adjusting the temp door (100d) installed inside the main air conditioner (1000).

The first expansion valve (120) is installed in the refrigerant circulation line (R) on the outlet side of the indoor heat exchanger (110). The first expansion valve (120) is operated so that the refrigerant discharged from the indoor heat exchanger (110) is condensed during heating and the refrigerant is evaporated in the indoor heat exchanger (110), thereby reducing the refrigerant to a low temperature and low pressure state. Meanwhile, the first expansion valve (120) does not reduce the refrigerant during cooling but bypasses it.

The outdoor heat exchanger (130) performs a heat-radiating role like a condenser during cooling, and performs a heat-absorbing role like an evaporator during heating. At this time, the outdoor heat exchanger (130) can receive outdoor air having a lower temperature than indoor air during cooling. In addition, the outdoor heat exchanger (130) can operate by receiving engine room air or indoor air having a higher temperature than the outdoors during heating. In this way, the outdoor heat exchanger (130) can improve condensing performance and evaporation performance by condensing air having a relatively low temperature during cooling, and evaporating air having a relatively high temperature during heating. At this time, the outdoor heat exchanger (130) operates depending on whether the first expansion valve (120) is throttled.

In addition, a fan (210) may be installed on one side of the outdoor heat exchanger (130). The fan (210) increases the heat dissipation efficiency of the surface of the outdoor heat exchanger (130) and, as a result, further promotes the cooling efficiency of the cooling water. The fan (210) improves the heat dissipation performance by forcibly passing the air around the outdoor heat exchanger (130), and may be composed of a fan, a motor that drives the fan, and a shroud that fixes the motor and protects the fan.

The second expansion valve (140) is installed on the inlet side of the evaporator (160). The second expansion valve (140) throttles the refrigerant supplied to the evaporator (160) during cooling to a low temperature and low pressure state. Meanwhile, the second expansion valve (140) bypasses the refrigerant without throttle during heating.

The third expansion valve (150) throttles the refrigerant supplied to the vehicle electrical component (200) to a low-temperature, low-pressure state when the vehicle electrical component (200) is overheated. On the other hand, when the vehicle electrical component (200) is not cooled, the refrigerant is bypassed without throttled. Here, examples of the vehicle electrical component (200) include a motor and an inverter. In addition, the chiller (190) may include an accumulator (170).

The above evaporator (160) is installed inside the main air conditioner (1000) and heat-exchanges the air inside the main air conditioner (1000) and the refrigerant supplied to the compressor (100). At this time, the evaporator (160) heats the air by evaporating the low-pressure liquid refrigerant and performs cooling.

The chiller (190) cools the cooling water by exchanging heat between the refrigerant reduced by the third expansion valve (150) and the cooling water for cooling the electrical components (200). The chiller (190) is a part where the cooling water flows and heat exchanges during cooling, and can condense the refrigerant supplied to the evaporator (160) according to the cooling setting together with the indoor heat exchanger (110).

The above accumulator (170) separates the liquid refrigerant when the refrigerant is condensed by the chiller (190) and delivers the gaseous refrigerant to the compressor (100).

Below, the operating principle of the vehicle heat pump system for cooling and heating will be described.

FIG. 3 is a configuration diagram showing the driving state of a vehicle heat pump system according to the present invention during cooling, and FIG. 4 is a configuration diagram showing the driving state of a vehicle heat pump system according to the present invention during heating.

Referring to FIG. 3, in the vehicle heat pump system, when cooling, the refrigerant compressed in the compressor (100) sequentially circulates through the indoor heat exchanger (110), the outdoor heat exchanger (130), the second expansion valve (140), the evaporator (160), and the accumulator (170). Alternatively, the compressed refrigerant sequentially circulates through the indoor heat exchanger (110), the outdoor heat exchanger (130), the third expansion valve (150), the chiller (190), and the accumulator (170).

First, the refrigerant compressed in the compressor (100) passes through the indoor heat exchanger (110). At this time, the compressed refrigerant passes through the indoor heat exchanger (110) without heat exchange. Meanwhile, the temp door (110d) of the main air conditioner (1000) blocks the flow of air passing through the indoor heat exchanger (110). Then, the refrigerant passing through the indoor heat exchanger (110) bypasses the first expansion valve (120) and is supplied to the outdoor heat exchanger (130). At this time, the outdoor heat exchanger (130) performs a heat dissipation function like a condenser by exchanging heat with the supplied refrigerant and air. At this time, the outdoor heat exchanger (130) can increase the condensation performance by receiving the outside air of the vehicle and performing heat exchange. And the refrigerant that has passed through the outdoor heat exchanger (130) is throttled in the second and third expansion valves (140) (150), respectively. And the throttled refrigerant is supplied to the evaporator (160) and the chiller (190) and evaporated. At this time, the refrigerant supplied to the evaporator (160) can cool the interior while evaporating, and the refrigerant supplied to the chiller (190) can cool the vehicle electrical components (200) while evaporating. And, the refrigerant that has passed through the evaporator (160) and the chiller (190) moves to the accumulator (170) and is then supplied to the compressor (100) and compressed.

Referring to FIG. 4, in the vehicle heat pump system, when in heating mode, the refrigerant discharged from the compressor (100) sequentially circulates through the indoor heat exchanger (110), the first expansion valve (120), and the outdoor heat exchanger (130).

First, the refrigerant compressed in the compressor (100) exchanges heat with air while passing through the indoor heat exchanger (110). At this time, the refrigerant passing through the indoor heat exchanger (110) heats the air discharged into the room through the heat dissipation effect due to condensation. At this time, the tamp door (100d) of the main air conditioner (1000) operates so that the air passing through the indoor heat exchanger (110) is introduced into the room. Meanwhile, the PTC heater (H) in the main air conditioner (1000) operates to additionally heat the indoor air.

And, the refrigerant that has passed through the indoor heat exchanger (110) is supplied to the first expansion valve (120) and throttled. And, the throttled refrigerant is supplied to the outdoor heat exchanger (130) and evaporated. And, the evaporated refrigerant is supplied to the compressor (100) without passing through the second expansion valve (140) and the evaporator (160).

The above vehicle heat pump system includes a main air conditioner (1000) and an auxiliary air conditioner (2000). At this time, the indoor heat exchanger (110) and the evaporator (160) may be installed inside the main air conditioner (1000), and the outdoor heat exchanger (130) and the fan (210) may be installed inside the auxiliary air conditioner (2000).

Hereinafter, the main air conditioning unit (2000) and the auxiliary air conditioning unit (2000) in the vehicle heat pump system of the present invention will be described with reference to FIGS. 5 to 9.

FIG. 5 is a perspective view illustrating a combined state of a main air conditioner and an auxiliary air conditioner in a vehicle heat pump system according to the present invention, FIG. 6 is an exploded perspective view illustrating a separated state of a main air conditioner and an auxiliary air conditioner in a vehicle heat pump system according to the present invention, FIG. 7 is a perspective view illustrating a main air conditioner in a vehicle heat pump system according to the present invention, FIG. 8 is an enlarged view illustrating a first joint portion in FIG. 7, and FIG. 9 is a perspective view illustrating an auxiliary air conditioner in a vehicle heat pump system according to the present invention.

The above main air conditioner (1000) air-conditions the outside air or the inside air of the vehicle and discharges it into the interior of the vehicle. The main air conditioner (1000) may be placed in the engine room of the vehicle. At this time, the main air conditioner (1000) may suck in the outside air of the vehicle or the inside air of the engine room, air-condition it through the indoor heat exchanger (110) and the evaporator (160), and then discharge it into the interior of the vehicle. In addition, a first coupling part (1100) coupled with the auxiliary air conditioner (2000) may be formed on one side of the main air conditioner (1000).

The above main air conditioner (1000) may include a main air conditioner housing (1200) and an indoor heat exchanger (110) and an evaporator (160) built into the main air conditioner housing (1200).

The above main air conditioning housing (1200) is equipped with an air intake (1201) and an air discharge port, and an air path can be formed inside. In addition, an indoor heat exchanger (110) and an evaporator (160) are arranged in the air path.

Referring to Fig. 7, the main air conditioning housing (1200) may be composed of an intake section (1210), an air conditioning section (1220), and an exhaust section (1230). The intake section (1210) intakes external air and guides it to the main air conditioning module. At this time, the intake section (1210) may intake external air of the vehicle.

More specifically, an air intake port (1201) connected to the outside of the vehicle may be formed in the intake port (1210). The air intake port (1201) may be connected to the outside through a cowl of a front panel portion connected to a window. At this time, the intake port (1210) may guide air sucked through the air intake port (1201) toward the air conditioning unit (1220). In addition, the intake port (1210) may be connected to an outside air delivery unit (1211) connected to the inside of the auxiliary air conditioning unit (2000). The outside air delivery unit (1211) may be branched from the intake port (1210) and may deliver some of the outside air sucked through the intake port (1210) to the auxiliary air conditioning unit (2000).

The above air conditioning unit (1220) has an air path formed inside. The indoor heat exchanger (110) and the evaporator (160) placed in the air path exchange heat with the air sucked in through the suction unit (1210) to generate cold air or warm air.

The above discharge unit (1230) is formed with an air discharge port. At this time, the discharge unit (1230) can guide air that has passed through the evaporator (160) and the indoor heat exchanger (110) in the air conditioning unit (1220) to the air discharge port.

The above auxiliary plant device (2000) is detachably connected to the main air conditioning device (1000).

The above auxiliary air conditioner (2000) heat-exchanges the refrigerant passing through the main air conditioner (1000) or flowing into the main air conditioner (1000). At this time, the auxiliary air conditioner (2000) may be formed with a second coupling part (2100) coupled with the first coupling part (1100).

The above auxiliary air conditioning device (2000) may include an auxiliary air conditioning housing (2200) and an outdoor heat exchanger (130) and a fan (210) mounted in the auxiliary air conditioning housing (2200).

The above auxiliary air conditioning housing (2000) may include an inlet portion (2210) and a body portion (2220).

The above inlet (2210) may have a shape that branches to both sides. At this time, the outside air of the vehicle may be introduced into one side of the inlet (2210), and the inside air may be introduced into the other side. At this time, the inlet (2210) may include a first air inlet (2201) and a second air inlet (2202).

The first air inlet (2201) can allow outside air of the vehicle to be introduced. At this time, the first air inlet (2201) can be connected to the outside air transmission unit (1211). In addition, the second air inlet (2202) can allow air from inside the vehicle, i.e., the engine room, to be introduced.

The body part (2220) may be connected to the lower part of the inlet part (2210). At this time, the body part (2220) is positioned lower than the inlet part (2210), so that air can be introduced from the upper side. In addition, the outdoor heat exchanger (130) and the fan (210) may be mounted on the body part (2220). At this time, the outdoor heat exchanger (130) is positioned lower than the evaporator (160), so that heat dissipation can be induced by the condensate of the evaporator (160) during cooling. This vehicle heat pump system can induce heat dissipation of the outdoor heat exchanger by using the condensate of the evaporator (160), thereby increasing the cooling performance of the outdoor heat exchanger (130).

Referring to Fig. 6, the auxiliary air conditioner (2000) can receive air from the first air path (A) and air from the first air path (B). At this time, the first air path (A) receives outside air of the vehicle and passes through the outdoor heat exchanger (130) and the fan (210), and the second air path (B) receives air from the interior or engine room of the vehicle and passes through the outdoor heat exchanger (130) and the fan (210).

At this time, the air of the first air path (A) is sucked in through the air intake (1201) of the main air conditioner (1000) and supplied to the auxiliary air conditioner (2000). The air sucked in through the air intake (1201) passes through the intake section (1210) and is delivered to the first air inlet (2201) through the outdoor air delivery section (1211) branched from the intake section (1210). Then, the air passing through the air inlet (2201) moves to the body section (2220) and passes through the outdoor heat exchanger (130) and the fan (210).

And, the air of the second air path (B) is introduced through the second air inlet (2202) of the auxiliary air conditioner (2000). And, the air passing through the second air inlet (2202) moves to the body part (2220) and passes through the outdoor heat exchanger (130) and the fan (210).

The above coupling means (3000) couples the main air conditioning unit (1000) and the auxiliary air conditioning unit (2000). At this time, the coupling means (3000) can detachably couple the first coupling part (1100) and the second coupling part (2100).

The first coupling portion (1100) and the second coupling portion (2100) may each have a through hole formed therein, and the coupling means (3000) may include a mounting pin (P) that penetrates and couples the first coupling portion (1100) and the second coupling portion (2100).

Meanwhile, although not shown in the drawing, the coupling means (3000) may include a clamp member (not shown) that fastens and couples the first coupling portion (1100) and the second coupling portion (2100). In addition, if the coupling means (3000) is omitted, and the first coupling portion includes one of a groove or a projection, and the second coupling portion includes the other of a groove or a projection corresponding to the shape of the first coupling portion, the first coupling portion and the second coupling portion may be fitted and coupled. At this time, the coupling means (3000) may be applied in various modified examples that detachably couple the main air conditioner (1000) and the auxiliary air conditioner (2000).

The vehicle heat pump system according to the present invention can implement a compact structure of the vehicle heat pump system by integrating the main air conditioning unit and the auxiliary air conditioning unit, can shorten the path of the refrigerant, alleviate the pressure drop phenomenon of the refrigerant, and simplify the piping structure.

According to the vehicle heat pump system according to the present invention, the outdoor heat exchanger can be placed near the main air conditioning unit, which is relatively easy to access, thereby increasing the convenience of maintenance work.

Although the present invention has been described above with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various modifications and changes may be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below.

100: Compressor
110: Indoor heat exchanger
120: 1st expansion valve
130: Outdoor heat exchanger
140: Second expansion valve
150: 3rd expansion valve
210: Fan
1000: Main air conditioner
1100: 1st joint
2000: Auxiliary air conditioning unit
2100: Second Junction
2201: 1st Euro
2202: 2nd Euro
3000: Combination means

Claims (13)

A main air conditioning unit equipped with an indoor heat exchanger that heats the interior by dissipating the heat of high-temperature refrigerant, and an evaporator that cools the interior by absorbing the heat of the outside air into the condensed low-temperature refrigerant; and
An auxiliary air conditioner is detachably connected to the main air conditioner and includes an outdoor heat exchanger that takes in air from the engine room of the vehicle when heating or takes in air outside the vehicle when cooling.
The above main air conditioner includes an air intake port formed therein and an intake port that guides air intaked through the air intake port to the indoor heat exchanger and the evaporator.
A vehicle heat pump system wherein the main air conditioner further includes an outside air delivery unit branched from the suction unit and delivering a portion of the outside air sucked in to the auxiliary air conditioner. In the first paragraph,
The above main air conditioner has a first joint formed therein,
A vehicle heat pump system, wherein the auxiliary air conditioning device has a second coupling portion formed therein, the second coupling portion being coupled with the first coupling portion. In the second paragraph,
A vehicle heat pump system further comprising a coupling means for detachably coupling the first coupling portion and the second coupling portion. In the third paragraph,
The above-mentioned combining means
A vehicle heat pump system comprising a mounting pin that penetrates and connects the first coupling portion and the second coupling portion. In the third paragraph,
The above-mentioned combining means
A vehicle heat pump system comprising a clamp member that securely connects the first coupling portion and the second coupling portion. In the second paragraph,
The first connecting portion includes one of a groove or a projection,
The second connecting portion includes another one of a groove or a protrusion corresponding to the shape of the first connecting portion,
A vehicle heat pump system in which the first coupling portion and the second coupling portion are fittedly coupled. In the second paragraph,
The above main air conditioning unit includes a main air conditioning housing,
The above main air conditioning housing is,
The above suction part;
An air conditioning unit in which the indoor heat exchanger and the evaporator are arranged; and
A vehicle heat pump system including an exhaust port formed with an air outlet and guiding air passing through the indoor heat exchanger and the evaporator to the air outlet. In Article 7,
A vehicle heat pump system in which the first coupling part is formed on one surface of the above air conditioning unit facing the auxiliary air conditioning unit. In Article 7,
A vehicle heat pump system, characterized in that the above suction unit sucks in outside air of the vehicle. In Article 9,
A vehicle heat pump system wherein the above main air conditioning housing further includes the above outside air transmission unit. In Article 10,
The above auxiliary air conditioning device includes an auxiliary air conditioning housing,
The above auxiliary air conditioning housing is,
An inlet section through which the outside air of the vehicle is introduced on one side and the inside air of the vehicle is introduced on the other side.
A vehicle heat pump system comprising a body part disposed below the inlet part and in which the outdoor heat exchanger is mounted. In Article 11,
The above inlet is formed in a shape that branches out to both sides,
A vehicle heat pump system having one end connected to the above-mentioned outside air transfer unit. In Article 11,
A vehicle heat pump system wherein the outdoor heat exchanger is positioned lower than the evaporator.

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