CN117284044A - Air conditioner and air conditioning system with integrated heat exchanger - Google Patents

Abstract

The present disclosure relates to an air conditioner and an air conditioning system having an integrated heat exchanger. The integrated heat exchanger enables heat exchange between cooling water and air-conditioning air and generates heating air or cooling air, thereby improving cooling/heating efficiency. Further, since the temperature of the cooling water circulating in the integrated heat exchanger is adjusted, there is no temperature adjusting door for adjusting the temperature of the air-conditioning air, and thus the number of components is reduced. Further, since the integrated heat exchanger is applied, the components are optimally arranged, and the size of the entire package is reduced.

Description

Air conditioner and air conditioning system with integrated heat exchanger

Technical Field

The present disclosure relates to an air conditioner having an integrated heat exchanger to improve cooling/heating efficiency and an air conditioning system using the same.

Background

The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

Recently, as a social problem related to an electric vehicle, solutions to problems such as implementation of environmental technologies and energy consumption are being developed. The electric vehicle is driven by an electric motor, which is powered by a battery and outputs electric power. Accordingly, the electric vehicle has advantages in that carbon dioxide is not discharged, a small amount of noise is generated, and the energy efficiency of the motor is higher than that of the engine, and thus the electric vehicle has been attracting attention as an environmentally friendly vehicle.

The core technology for realizing such an electric vehicle is technology related to a battery module, and recently, research for reducing the weight and size of a battery and shortening the charging time has been actively conducted. The battery module cannot maintain optimal performance and long service life unless used in an optimal temperature environment. However, it has been found that it is very difficult to use the battery module in an optimal temperature environment due to heat generated in operation and variation in external temperature.

Further, the electric vehicle does not have a waste heat source generated during combustion in a conventional engine such as an internal combustion engine, and thus the interior of the electric vehicle is heated by an electric heater in winter. Further, in the severe cold period, preheating is required to improve charge/discharge performance of the battery, and thus a separate cooling water heating type electric heater is used. In other words, a technology for controlling the temperature of the battery module to maintain the optimal temperature environment of the battery module, which is operated separately from the heating/cooling system for the interior air conditioning of the vehicle, is used.

In this case, a heat pump technology for minimizing heat energy consumption is applied to an air conditioning system of an interior air conditioning of a vehicle to increase endurance, thereby minimizing energy consumption. The air conditioning system has a temperature adjusting door for selectively adjusting the supply of the cooling air and the heating air, and components of the air conditioning system including the evaporator and the heater are spaced apart from each other, thus increasing the overall size. Further, when air conditioning is performed only by circulation of the refrigerant, the volume of the components for circulating the refrigerant increases, and thus the size of the entire package of the air conditioning system increases.

Disclosure of Invention

The present disclosure has been made in an effort to solve the above-mentioned problems, and provides an integrated heat exchanger having improved cooling/heating efficiency, an air conditioner using fewer doors to adjust the temperature of air-conditioned air of each mode, and thus having a compact overall package due to the application of the integrated heat exchanger and the use of cooling water. The present disclosure also provides an air conditioning system using such an integrated heat exchanger.

In one embodiment of the present disclosure, an air conditioner with an integrated heat exchanger includes: an indoor heat exchanger provided in the air-conditioning case and configured to generate heating air or cooling air by selectively passing cooling water for heating and cooling water for cooling; and a heater spaced apart from the indoor heat exchanger in the air conditioner case and configured to selectively discharge heat. In particular, an exhaust path (bleed path) is formed around the heater, and a door unit (door unit) is installed in the air conditioner case to adjust opening and closing of the exhaust path.

In one embodiment, the indoor heat exchanger and the heater may be disposed such that upper portions thereof are close to each other and lower portions thereof are distant from each other.

In one embodiment, in the air conditioning case, the exhaust path may be formed above the heater, and the bypass path may be formed below the heater.

In one embodiment, the exhaust path may pass air at a flow rate of 25% or less of the air flow rate through the heater.

The air conditioning case may have an air inlet and a plurality of air outlets including at least a defrost vent and one or more front vents; and the door unit may include a first door configured to adjust opening and closing of the exhaust path and a second door configured to adjust opening and closing of the front vent.

The air conditioner case may have a third door configured to adjust opening and closing of the defrost vent.

The first door and the second door may be respectively installed at the air conditioner case to be rotatable about the rotation axis, and may have moving pins at end portions, respectively. The door unit may further include a cam (cam) having a plurality of guide grooves into which the moving pins of the doors are inserted, and thus the cam is configured to change rotational positions of the first door and the second door by the moving pins moving along the guide grooves, respectively.

The guide groove of the cam may extend in the rotation direction while being bent inward and outward, and may have different shapes, so that opening or closing timings of the exhaust path, the defrost vent, and the front vent may be differently set.

The air-conditioning case may have at least one or more rear vent holes at a lower portion, and the rear door may be installed at the rear vent holes.

The rear door may include a fourth door configured to selectively flow air passing through the heater to the rear vent. The rear door may further include a fifth door configured to selectively flow the air passing through the indoor heat exchanger to the rear vent through a bypass path below the heater without passing through the heater.

In another embodiment, the gate unit may include: an opening/closing door configured to operate upward and downward in the exhaust path to adjust opening and closing of the exhaust path; and an actuator configured to control a position of the opening/closing door.

In another embodiment of the present disclosure, an air conditioning system with an integrated heat exchanger includes a refrigerant circuit in which a refrigerant circulates, the refrigerant circuit including a compressor, a condenser, an expander, and an evaporator. The air conditioning system further includes: a first cooling water circuit in which cooling water circulates to exchange heat with a condenser of the refrigerant circuit for heating; a second cooling water circuit in which cooling water circulates to exchange heat with an evaporator of the refrigerant circuit for cooling; and a valve module to which the first cooling water circuit and the second cooling water circuit are connected, and which changes a flow direction of cooling water for heating or cooling. The air conditioning system further includes: an indoor heat exchanger provided in the air conditioner case, to which the first and second cooling water circuits are connected, and which receives cooling water for heating or cooling water for cooling and generates heating air or cooling air. In another embodiment, a heater spaced apart from the indoor heat exchanger and configured to selectively generate heat is provided in the air conditioning case, an exhaust path is formed around the heater, and a door unit configured to adjust opening and closing of the exhaust path is provided in the air conditioning case.

The indoor heat exchanger may include: a first heat exchange member connected to the first cooling water circuit and configured to discharge heat through cooling water for heating; and a second heat exchange member connected to the second cooling water circuit and configured to absorb heat by cooling water for cooling.

The first cooling water circuit may include a first water pump, and the second cooling water circuit may include a second water pump.

The cooling water in the first cooling water circuit and the cooling water in the second cooling water circuit may be selectively shared by a plurality of shared valves.

According to the air conditioner having the integrated heat exchanger and the air conditioning system using the integrated heat exchanger constructed as described above, since the heating air and the cooling air are generated by the integrated heat exchanger enabling heat exchange between the cooling water and the air-conditioning air, the cooling/heating efficiency is improved.

Further, since the temperature of the cooling water circulating in the integrated heat exchanger is adjusted, there is no temperature adjusting door for adjusting the temperature of the air-conditioning air, thereby reducing the number of components.

Further, since the integrated heat exchanger is applied, the components are optimally arranged, so that the size of the entire package is reduced.

Drawings

The above and other objects, features and other advantages of the present disclosure will be more clearly understood from the following detailed description when taken in conjunction with the accompanying drawings, in which:

fig. 1 is a view illustrating an air conditioner having an integrated heat exchanger according to an embodiment of the present disclosure;

fig. 2 is a view showing an exhaust path and a door unit in the air conditioner with the integrated heat exchanger shown in fig. 1;

fig. 3 is a view showing the results of airflow analysis for explaining the effects of the present disclosure;

fig. 4 is a view showing a door and a cam of a door unit in an air conditioner having an integrated heat exchanger according to an embodiment of the present disclosure;

fig. 5 is a view showing a first door of a door unit in an embodiment of the present disclosure;

fig. 6 is a view showing a connection structure of an air conditioner case and a first door of a door unit in an embodiment of the present disclosure;

fig. 7 is a view showing a connection structure of a cam and a first door of a door unit in an embodiment of the present disclosure;

fig. 8 is a view illustrating internal cooling by an air conditioner having an integrated heat exchanger in an embodiment of the present disclosure;

fig. 9 is a view illustrating internal cooling by an air conditioner having an integrated heat exchanger in an embodiment of the present disclosure;

fig. 10 is a view illustrating defrosting by an air conditioner having an integrated heat exchanger in an embodiment of the present disclosure;

fig. 11 is a view showing a bi-level structure of an air conditioner having an integrated heat exchanger in an embodiment of the present disclosure;

fig. 12 is a view illustrating an air conditioner having an integrated heat exchanger according to another embodiment of the present disclosure; and

fig. 13 is a circuit diagram of an air conditioning system using an integrated heat exchanger according to an embodiment of the present disclosure.

Detailed Description

Hereinafter, embodiments of the present disclosure are described in detail with reference to the drawings, and the same or similar components are given the same reference numerals regardless of the reference numerals of the drawings, and repeated descriptions of the same or similar components are omitted.

The component terms "module" and "unit" used in the following description are used for descriptive convenience only and do not have a distinguishing meaning or function.

In the following description, when it is determined that detailed description of known techniques related to the present disclosure will obscure the gist of the embodiments described herein, the detailed description is omitted. Further, the drawings are provided only for easy understanding of the embodiments disclosed in the specification, and therefore the technical ideas disclosed in the specification are not limited by the drawings, and it should be understood that all modifications, equivalents and alternatives are included in the spirit and scope of the present disclosure.

Although the terms first, second, etc. may be used herein to describe various components, these components should not be limited by these terms. These terms are only used to distinguish one element from another element.

It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or be connected or coupled to the other element in the presence of other elements interposed therebetween. In contrast, when an element is referred to as being "directly connected to" or "directly coupled to" another element, it can be connected or coupled to the other element without the other element intervening therebetween.

The singular forms shall include the plural forms unless the context clearly indicates otherwise.

It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.

When a component, device, element, etc. of the present disclosure is described as having an object or performing an operation, function, etc., the component, device, or element should be taken as "configured to" satisfy the object or perform the operation or function.

Hereinafter, an air conditioner having an integrated heat exchanger and an air conditioning system having an integrated heat exchanger according to embodiments of the present disclosure will be described with reference to the accompanying drawings.

Fig. 1 is a view illustrating an air conditioner having an integrated heat exchanger according to an embodiment of the present disclosure, and fig. 2 is a view illustrating an exhaust path and a door unit in the air conditioner having the integrated heat exchanger illustrated in fig. 1.

Fig. 3 is a view showing the results of airflow analysis for explaining the effects of the present disclosure.

Fig. 4 is a view showing a door and a cam of a door unit in an air conditioner with integrated heat according to the present disclosure, fig. 5 is a view showing a first door for explaining the door unit of the present disclosure, fig. 6 is a view showing a connection structure of an air conditioner case and the first door for explaining the door unit of the present disclosure, and fig. 7 is a view showing a connection structure of a cam and the first door for explaining the door unit of the present disclosure.

Fig. 8 is a view showing internal cooling by an air conditioner having an integrated heat exchanger of the present disclosure, fig. 9 is a view showing internal cooling by an air conditioner having an integrated heat exchanger of the present disclosure, fig. 10 is a view showing defrosting by an air conditioner having an integrated heat exchanger of the present disclosure, and fig. 11 is a view showing a double-layer structure of an air conditioner having an integrated heat exchanger of the present disclosure.

Fig. 12 is a view illustrating an air conditioner having an integrated heat exchanger according to another embodiment of the present disclosure.

Further, fig. 13 is a circuit diagram of an air conditioning system with an integrated heat exchanger according to the present disclosure.

As shown in fig. 1 and 2, an air conditioner with an integrated heat exchanger according to the present disclosure includes: an indoor heat exchanger 200 provided in the air-conditioning case 100 and generating heating air or cooling air by selectively passing cooling water for heating or cooling water for cooling; and a heater 300 spaced apart from the indoor heat exchanger 200 in the air-conditioning case 100 and selectively discharging heat.

In one embodiment of the present disclosure, the indoor heat exchanger 200 and the heater 300 are provided in the air conditioning case 100.

In this configuration, the cooling water for heating and the cooling water for cooling selectively flow through the indoor heat exchanger 200, so that the air-conditioning air conforming to the desired internal temperature can be supplied through the indoor heat exchanger. In other words, the temperature of the cooling water flowing through the indoor heat exchanger 200 may be managed by heat exchange with another heat exchange medium. In an embodiment of the present disclosure, the cooling water and the refrigerant may exchange heat with each other, thereby adjusting the temperature of the cooling water. For example, the cooling water flowing through the indoor heat exchanger 200 may be heated by exchanging heat with the high-temperature refrigerant through the condenser 12 and then cooled as the cooling water for heating through the indoor heat exchanger 200, or may be cooled by exchanging heat with the low-temperature refrigerant through the evaporator 14 and then cooled as the cooling water for cooling through the indoor heat exchanger 200.

Accordingly, the heating air or the cooling air is generated by selectively flowing the cooling water for heating and the cooling water for cooling through one indoor heat exchanger 200, so that the temperature of the air-conditioning air can be adjusted without a specific temperature-adjusting door.

In one embodiment, the heater 300 is spaced apart from the indoor heat exchanger 200 in the air conditioning case 100. When the use of the indoor heat exchanger 200 alone is insufficient for heating, the heater 300 may be a PTC heater for supplementary heating.

In particular, according to the present disclosure, the exhaust path 101 is formed around the heater 300, and the door unit 400 that opens or closes the exhaust path 101 is installed in the air conditioning case 100.

Since the exhaust path 101 is formed around the heater 300 in the air conditioning case 100, a part of the air passing through the indoor heat exchanger 200 bypasses the heater 300 through the exhaust path 101, thereby securing the flow rate of the air.

Further, a door unit 400 that opens or closes the exhaust path 101 is installed in the air conditioner case 100, and according to the open and closed positions of the door unit 400, air may be allowed or blocked to flow through the exhaust path 101, and the flow direction of the air may be changed.

The door unit 400 may have a plate-shaped door to be able to close the exhaust path 101, and the door may be completely opened or closed based on a rotational position of the door. Further, when the door is positioned to open only a portion of the exhaust path 101, the door is positioned at an angle in the exhaust path 101, and thus air is guided to the heater 300 through the exhaust path 101 so that the air can be mixed with the air passing through the heater 300.

Therefore, according to the present disclosure, it is possible to improve air conditioning efficiency optimized for each air conditioning mode by adjusting the flow rate of air passing through the exhaust path 101 using the door unit 400 according to the indoor air conditioning mode.

The present disclosure having the above-described configuration is described in detail. The indoor heat exchanger 200 and the heater 300 each have an upper portion and a lower portion. In particular, the upper portions of the indoor heat exchanger 200 and the heater 300 are disposed close to each other, and the lower portions are disposed away from each other, so the indoor heat exchanger 200 and the heater 300 may be formed in an inverted V shape.

Since the indoor heat exchanger 200 and the heater 300 are disposed at an angle in this way, when condensed water is generated in the indoor heat exchanger 200, the condensed water is easily discharged and dispersed, and the heater 300 is not affected by the condensed water generated in the indoor heat exchanger 2, thereby ensuring the stability of the high voltage part.

Further, by the arrangement of the indoor heat exchanger 200 and the heater 300, resistance to the air flow in the air-conditioning case 100 is minimized, and thus the air quantity can be ensured.

Accordingly, as can be seen from the airflow analysis results shown in fig. 3, the flow resistance in the arrangement structure of the indoor heat exchanger 200 and the heater 300 according to the present disclosure is reduced as compared to the prior art and concept.

Further, according to the analysis results, as shown in table 1 below, it can be seen that the pressure value of the air flow in the air conditioning case 100 according to the outlet is reduced only by comparing the concept and the embodiments of the present disclosure.

TABLE 1

The analysis results were obtained in a state where the same air inflow condition, the same heater 300 condition, and the same outlet pipe resistance condition were satisfied.

In an embodiment, the exhaust path 101 may be formed to pass air at a flow rate of 25% or less of the flow rate of air passing through the heater 300.

When the exhaust path 101 is set so that air passes through more than 25% of the air flow rate passing through the heater 300, the air flow rate passing through the heater 300 is reduced when heating the inside, so that the heating performance is deteriorated. Accordingly, the exhaust path 101 allows the flow rate of the air passing through the exhaust path 101 to be set to 25% or less of the flow rate of the air passing through the heater 300, thereby improving the heating performance and reducing the internal pressure of the air conditioning case 100 by improving the air flow.

On the other hand, as shown in fig. 1, in the air conditioning case 100, the exhaust path 101 is formed above the heater 300, and the bypass path 102 is formed below the heater 300, so that some air passing through the indoor heat exchanger 200 flows through the exhaust path 101 and the bypass path 102 without passing through the heater 300.

In other words, the air-conditioning case 100 has a plurality of ventilation holes for discharging the air-conditioning air to various locations inside, and the ventilation holes are distributed at the upper and lower ends of the air-conditioning case 100. Accordingly, since the exhaust path 101 and the bypass path 102 are formed above and below the heater 300, respectively, in the air conditioning case 100, the flow rate of air flowing to the vent holes is ensured.

Further, since the exhaust path 101 and the bypass path 102 are formed around the heater 300 in the air conditioning case 100, flow resistance due to the arrangement of the heater 300 in the air conditioner is eliminated. In other words, since a part of the air passing through the indoor heat exchanger 200 in the air conditioning case 100 flows through the exhaust path 101 and the bypass path 102 without passing through the heater 300, it is possible to reduce the pressure inside the air conditioning case 100 and improve the flow in the air conditioning case 100.

According to this embodiment of the present disclosure, the air conditioning case 100 has an air inlet 110 and a plurality of air outlets 120, the plurality of air outlets 120 including at least one or more defrost vent 121 and front vent 122, and the door unit 400 may include a first door 410 adjusting the opening and closing of the exhaust path 101 and a second door 420 adjusting the opening and closing of the front vent 122.

A third door 430 that adjusts the opening and closing of the defrost vent 121 may be further provided in the air-conditioning case 100.

The second door 420 may be connected in a link structure according to the position of the front vent 122, so that the second door 420 may be opened and closed by rotation associated with the rotation of the cam 440.

Air flowing through the air inlet 110 in the air conditioning case 100 flows to the inner space through the air outlet 120. In particular, the air outlet 120 may include a defrost vent 121 and a front vent 122 such that air-conditioned air is provided to various locations in the interior space, and the air outlet 120 may further include a rear vent 123 to be described below. These vents may be added or may be dispersed so that air flows to various locations in the interior space.

In this configuration, the defrost vent 121 and the front vent 122 are provided at the upper portion of the air-conditioning case 100, and thus air passing through the indoor heat exchanger 200 and the heater 300 and air passing through the exhaust path 101 above the heater 300 flow to the defrost vent 121 and the front vent 122 while being mixed.

The air flowing in the air-conditioning case 100 in this manner may selectively flow to the front vent 122 according to the opened and closed positions of the second door 420, or may selectively flow to the defrost vent 121 according to the opened and closed positions of the third door 430. Further, air selectively flows through the exhaust path 101 according to the open and closed positions of the first door 410, so that an optimal air flow rate can be ensured according to the internal air conditioning mode.

The third door 430 may be included in the door unit 400, or may be separately constructed.

The gate unit 400 according to the embodiment of the present disclosure is described in detail. As shown in fig. 4 to 7, the first door 410 and the second door 420 are respectively installed at the air conditioning case 100 to be rotatable about the rotation shaft 401.

The door unit 400 further includes a cam 440 having a plurality of guide grooves 441 into which the moving pins 402 of the door are inserted, and the rotational positions of the doors are changed by the moving pins 402 moving along the guide grooves 441, respectively, so that the open and closed positions of the first door 410 and the second door 420 can be adjusted in association with the rotation of the cam 440. The cam 440 may be rotated by a motor provided in the air conditioning case 100, and the motor is controlled by a controller.

According to the present disclosure, as described above, the door unit 400 includes the cam 440 and the door, and the opening and closing of the door are adjusted in association with the cam 440.

Since the first door 410 and the second door 420 are disposed at the upper portion of the air-conditioning case 100, the doors may be disposed within the rotation range of the cam 440.

The first door 410 and the second door 420 each have a rotation axis 401, and thus the first door 410 and the second door 420 are installed in the air-conditioning case 100 to be rotatable about the rotation axis 401. The doors each have a moving pin 402 at an end of the door spaced apart from the rotation shaft 401, and thus the door is connected to the cam 440 by the moving pin 402. In the present disclosure, a door may be positioned in the air-conditioning case 100, the cam 440 may be positioned outside the air-conditioning case 100, and a plurality of through holes 130 may be formed at the air-conditioning case 100 such that the moving pins 402 of the door are disposed to pass through the through holes. The cam 440 is formed to include a range of the moving pin 402 of the door.

Accordingly, the moving pin 402 of the door is inserted into the guide groove 441 of the cam 440, and when the cam 440 rotates, the moving pin 402 moves along the path of the guide groove 441, so that the rotational position of the door having the moving pin 402 can be adjusted in association with the movement.

The guide groove 441 of the cam 440 extends in the rotation direction while being bent inward and outward, and the shape of the guide groove 441 is different, so the time point (i.e., timing) of opening or closing of the exhaust path 101 and the front vent 122 may be set differently.

As shown in fig. 4, the cam 440 has a plurality of guide grooves 441 into which the moving pins 402 of the door are respectively inserted, and the guide grooves 441 are bent inward and outward in the rotation direction, so that when the cam 440 rotates, the moving pins 402 are moved through the guide grooves 441, so that the door can be rotated.

In particular, since the extension shapes of the guide grooves 441 of the cam 440 are different, when the cam 440 rotates, the opening and closing timings of the first door 410 and the second door 420 may be differently set according to the movement of the moving pin 402 in the guide grooves 441. Accordingly, when the cam 440 rotates, not only the first door 410 and the second door 420 may be provided to be simultaneously opened or closed, but also any one or more of the first door 410 and the second door 420 may be selectively opened or closed, and thus the air flow may be optimized according to the air conditioning mode.

For example, according to an embodiment of the present disclosure, at the time of internal cooling, as shown in fig. 8, cooling water for cooling circulates through the indoor heat exchanger 200, and cooling air is generated in the air-conditioning case 100.

In this case, the door unit 400 opens the first door 410 and the second door 420 by the rotation of the cam 440, so that air flows through the exhaust path 101, thereby improving the air flow. Further, the front vent 122 is opened so that cooling air is supplied to the inside.

In heating the inside, as shown in fig. 9, cooling water for heating circulates through the indoor heat exchanger 200, and the heater 300 is operated so that heated air is generated in the air-conditioning case 100.

In this case, the door unit 400 opens the first door 410 and the second door 420 by the rotation of the cam 440, so that air flows through the exhaust path 101, thereby improving the air flow. Further, the front vent 122 is opened so that the heated air is supplied to the inside.

When a higher heating temperature is required, the first door 410 may be closed such that all air passing through the indoor heat exchanger 200 passes through the heater 300.

In such internal cooling or heating, the third door 430 may be opened or closed according to whether air flows to the defrost side.

On the other hand, at the time of defrosting, as shown in fig. 10, the door unit 400 opens only a portion of the first door 410 and closes the second door 420 by the rotation of the cam 440. Further, the third door 430 is opened.

Accordingly, the air passing through the indoor heat exchanger 200 and the heater 300 flows to the defrost vent 121, and the flow rate of the air is ensured through the exhaust path 101 formed above the heater 300, so that the air flow rate required for defrosting can be satisfied. Since the first door 410 is positioned to be only partially opened, the air passing through the air discharge path 101 is guided downward by the first door 410 and mixed with the air passing through the heater 300, and thus the air-conditioning air required for defrosting can be smoothly provided.

On the other hand, in the double structure for adjusting the temperature of the air-conditioning air, as shown in fig. 11, the door unit 400 opens only a portion of the first door 410 and opens the second door 420 by the rotation of the cam 440. In this case, the third door 430 may be closed or partially opened.

Accordingly, the temperature of the air is adjusted by the indoor heat exchanger 200 and the heater 300, and the air flow rate is ensured by the exhaust path 101 formed above the heater 300, so that the air flow rate flowing to the front vent 122 and the defrost vent 121 can be satisfied. Further, since the first door 410 is positioned to be only partially opened, the air flow is guided such that the air passing through the exhaust path 101 and the air passing through the heater 300 are mixed, and thus it is easy to adjust the temperature of the air-conditioned air.

In addition, at least one or more rear vent holes 123 are formed at a lower portion of the air-conditioning case 100, and a rear door 450 may be installed at the rear vent holes 123.

The rear door 450 may include: a fourth door 451 that selectively flows air passing through the heater to the rear vent 123; and a fifth door 452 that selectively flows the air passing through the indoor heat exchanger 200 to the rear vent 123 through the bypass path 102 below the heater 300 without passing through the heater 300.

Since the rear vent hole 123 is formed at the lower portion of the air-conditioning case 100, air passing through the indoor heat exchanger 200 and the heater 300 and air passing through the bypass path 102 under the heater flow to the rear vent hole 123 while being mixed.

Since the rear door 450 has the fourth door 451 and the fifth door 452, when cooling the inside, the cooling air passing through the indoor heat exchanger 200 flows to the inside through the opened fourth door 452 without passing through the heater 300, and thus the air flow rate to the rear space of the inside can be ensured.

Further, when heating the inside, the fourth door 451 is opened and the fifth door 452 is closed, so that air passing through the indoor heat exchanger 200 and the heater 300 may flow to the rear space of the inside.

The fourth and fifth doors 451 and 452 may be individually operated by providing motors, respectively, or the same structure as the cam 440 described above may be applied to the fourth and fifth doors, and rotational positions of the fourth and fifth doors may be adjusted.

On the other hand, the gate unit 400 according to another embodiment of the present disclosure may include: an opening/closing door 460 that operates upward and downward in the exhaust path 101 to adjust the opening and closing of the exhaust path 101; and an actuator 470 controlling the position of the opening/closing door 460.

As shown in fig. 12, the door unit 400 may include an opening/closing door 460 and an actuator 470, and the opening/closing door 460 may be installed to linearly move upward and downward, thereby being able to selectively open and close the exhaust path 101. The opening/closing door 460 may be bent downward such that the air passing through the exhaust path 101 is smoothly mixed with the air passing through the heater.

Since the opening/closing door 460 is linearly moved upward and downward, operational stability is ensured. The actuator 470 controlling the position of the opening/closing door 460 may be a motor or a solenoid, and may be configured to operate with another door by applying the structure of the cam 440 described above.

On the other hand, as shown in fig. 13, an air conditioning system using an integrated heat exchanger includes: a refrigerant circuit 10 in which a refrigerant circulates in the refrigerant circuit 10, the refrigerant circuit 10 including a compressor 11, a condenser 12, an expander 13, and an evaporator 14; a first cooling water circuit 20 in which cooling water for heating, which exchanges heat with the condenser 12 of the refrigerant circuit 10, circulates in the first cooling water circuit 20; a second cooling water circuit 30, cooling water for cooling exchanging heat with the evaporator 14 of the refrigerant circuit 10 being circulated in the second cooling water circuit 30; and a valve module 40, the first cooling water circuit 20 and the second cooling water circuit 30 being connected to the valve module 40, and the valve module 40 changing a flow direction of the cooling water for heating or the cooling water for cooling. The air conditioning system further includes: an indoor heat exchanger 200 disposed in the air-conditioning case 100, the first and second cooling water circuits 20 and 30 are connected to the indoor heat exchanger 200, and the indoor heat exchanger 200 receives cooling water for heating or cooling water for cooling and generates heating air or cooling air. In an embodiment, a heater 300 spaced apart from the indoor heat exchanger 200 and selectively generating heat is provided in the air conditioning case 100. In another embodiment, the exhaust path 101 is formed around the heater 300, and a door unit 400 that adjusts the opening and closing of the exhaust path 101 is provided in the air conditioning case 100.

In another embodiment, the first cooling water circuit 20 includes a first water pump 21 and an outdoor heat exchanger 22, and the second cooling water circuit 30 includes a second water pump 31. The outdoor heat exchanger 22 may be a radiator.

According to an embodiment of the present disclosure, a compressor 11, a condenser 12, an expander 13, and an evaporator 14 are included in the refrigerant circuit 10, and a refrigerant is circulated through the compressor 11, the condenser 12, the expander 13, and the evaporator 14 in this order.

The high-temperature and high-pressure refrigerant compressed by the compressor 11 flows into the condenser 12 in the refrigerant circuit 10, so that the cooling water circulating in the first cooling water circuit 20 connected to the condenser 12 is cooled by the heat from the condenser 12. Accordingly, the first cooling water circuit 20 includes the condenser 12, and the cooling water exchanges heat with the refrigerant through the condenser 12 and circulates as cooling water for heating.

Further, in the refrigerant circuit 10, the cooling water circulating in the second cooling water circuit 30 connected to the evaporator 14 is cooled by the heat absorbing effect of the evaporator 14. Accordingly, the second cooling water circuit 30 includes the evaporator 14, and the cooling water exchanges heat with the refrigerant through the evaporator 14 and circulates as cooling water for cooling.

The cooling water flowing in the first cooling water circuit 20 and the second cooling water circuit 30 exchanges heat through the condenser 12 and the evaporator 14, respectively, and the first cooling water circuit 20 and the second cooling water circuit 30 are connected to the indoor heat exchanger 200 provided in the air-conditioning case such that the cooling water flows to the indoor heat exchanger 200, whereby the cooling water exchanges heat with the air-conditioning air through the indoor heat exchanger 200. The first cooling water circuit 20 includes a first water pump 21 so that cooling water circulates in the first cooling water circuit 20, and the second cooling water circuit 30 includes a second water pump 31 so that cooling water circulates in the second cooling water circuit 30.

In particular, since the valve module 40 is connected to the first and second cooling water circuits 20 and 30, the cooling water for heating or the cooling water for cooling flowing to the indoor heat exchanger 200 is selectively passed or blocked, so that it is possible to determine whether the heating air or the cooling air is generated through the indoor heat exchanger. The valve module 40 as a multi-way valve may be constructed such that several four-way valves are modularized.

Thus, according to the present disclosure, the temperature of the cooling water circulated through the first cooling water circuit 20 and the second cooling water circuit 30 is adjusted by the circulation of the refrigerant in the refrigerant circuit 10. Further, since the cooling water flowing through the first and second cooling water circuits 20 and 30 selectively flows to the indoor heat exchanger 200 through the valve module 40, the air-conditioning air conforming to the desired internal temperature can be provided through the indoor heat exchanger 200. Further, since the temperature of the cooling water is adjusted by the circulation of the refrigerant and the heating air or the cooling air is generated in the air-conditioning case 100 using the cooling water, it is possible to simplify the construction of the refrigerant circuit 10 and reduce the packaging of the refrigerant circulation. Further, the cooling water of different temperatures circulated through the first cooling water circuit 20 and the second cooling water circuit 30 flows into one indoor heat exchanger 200 and adjusts the temperature of the air-conditioning air, so the temperature of the air-conditioning air can be adjusted by selectively passing the cooling water through the valve module without a temperature adjusting door.

Accordingly, the cooling water is heated by the condenser 12 while being circulated by the operation of the first water pump 21 in the first cooling water circuit 20, and is cooled by the indoor heat exchanger 200, so that the temperature of the cooling water can be managed. Further, in the second cooling water circuit 30, the cooling water may be cooled by the evaporator 14 while being circulated by the operation of the second water pump 31.

Further, the cooling water in the first cooling water circuit 20 and the cooling water in the second cooling water circuit 30 may be selectively shared by a plurality of shared valves V. The common valve V may be disposed before and after the condenser 12 in the first cooling water circuit 20 and before and after the evaporator 14 in the second cooling water circuit 30, and the common valve V in the first cooling water circuit 20 and the common valve V in the second cooling water circuit 30 may be connected to each other through the common line L. Therefore, the cooling water may be circulated in the first cooling water circuit 20 and the second cooling water circuit 30 separately, or the cooling water circulated in the first cooling water circuit 20 and the cooling water circulated in the second cooling water circuit 30 may be shared, regardless of whether the common valve V in the first cooling water circuit 20 and the second cooling water circuit 30 is opened or closed. Therefore, the temperature of the cooling water can be easily adjusted to meet the temperature required for the internal air conditioning, and the cooling water can be effectively used according to the surrounding situation and the external environment.

Therefore, regarding the distinction between the prior art and the present disclosure, in the prior art, a condenser for generating heated air and an evaporator for generating cooling water in an air conditioner case are spaced apart from each other, and the condenser is relatively miniaturized, so it is difficult to secure heat for heating air. However, in the embodiment of the present disclosure, since a single indoor heat exchanger is provided in the air-conditioning case 100, the entire package of the air-conditioning case 100 is reduced, and there is no temperature-adjusting door, so the number and weight of components are reduced. Further, since the indoor heat exchanger 200 exchanges heat with the air-conditioning air through the entire area of the indoor heat exchanger 200 regardless of whether the heating air or the cooling air is generated, heating and cooling performance is ensured.

In another aspect, the indoor heat exchanger 200 may include: a first heat exchange part 210 connected to the first cooling water circuit 20 and discharging heat through cooling water for heating; and a second heat exchanger part 220 connected with the second cooling water circuit 30 and absorbing heat by the cooling water for cooling.

In other words, the indoor heat exchanger 200 may have the first heat exchange part 210 and the second heat exchange part 220, and the second heat exchange part 220 through which the cooling water for cooling flows may be disposed in front of the first heat exchange part 210 through which the cooling water for heating flows in the air flow direction.

The first heat exchange part 210 and the second heat exchange part 220 may have the same area and each may have a plurality of pipes through which cooling water flows and fins (fin) connected to the pipes. In particular, when the first heat exchange part 210 and the second heat exchange part 220 are pipes, corrosion resistance may be ensured by applying folded pipes, and the plurality of fins may have the same fin pitch per decimeter (FPDM), wherein the FPDM may be in the range of 108 to 125. The indoor heat exchanger 200 including the first heat exchange part 210 and the second heat exchange part 220 may be configured such that cooling water flows at the same flow rate, thereby improving corrosion resistance, reducing resistance of water, and minimizing the generation of condensed water.

According to the air conditioner having the integrated heat exchanger and the air conditioning system using the integrated heat exchanger constructed in accordance with the above-described structure, since the heating air and the cooling air are generated by the integrated heat exchanger enabling heat exchange between the cooling water and the air-conditioning air, the cooling/heating efficiency is ensured.

Further, since the temperature of the cooling water circulating in the integrated heat exchanger is adjusted, there is no temperature adjusting door for adjusting the temperature of the air-conditioning air, and thus the number of components is reduced.

Further, since the integrated heat exchanger is applied, the components are optimally arranged, so that the size of the entire package is reduced.

While the disclosure has been presented above in connection with the particular embodiments illustrated in the drawings, it will be apparent to those skilled in the art that the disclosure may be varied and modified in various ways without departing from the scope of the disclosure.

Claims (15)

1. An air conditioner with an integrated heat exchanger, comprising:

an indoor heat exchanger provided in the air-conditioning case and generating heating air or cooling air by selectively passing first cooling water for heating and second cooling water for cooling;

a heater spaced apart from the indoor heat exchanger in the air conditioning case and selectively discharging heat, wherein an exhaust path is formed around the heater; and

and a door unit adjusting opening and closing of the exhaust path and installed in the air conditioner case.

2. The air conditioner of claim 1, wherein the indoor heat exchanger and the heater each include an upper portion and a lower portion, and the upper portions of the indoor heat exchanger and the heater are disposed close to each other and the lower portions are disposed distant from each other.

3. The air conditioner according to claim 1, wherein in the air conditioning case, the exhaust path is formed above the heater, and a bypass path is formed below the heater.

4. The air conditioner of claim 1, wherein the exhaust path passes air at a flow rate of 25% or less of an air flow rate through the heater.

5. The air conditioner of claim 1, wherein the air conditioner case includes an air inlet and a number of air outlets, and the number of air outlets includes a defrost vent and at least one front vent; and is also provided with

The door unit includes a first door that adjusts opening and closing of the exhaust path and a second door that adjusts opening and closing of the at least one front vent.

6. The air conditioner of claim 5, wherein the air conditioner case has a third door that adjusts opening and closing of the defrost vent.

7. The air conditioner of claim 5, wherein the first door and the second door are respectively installed at the air conditioner case, rotate around a rotation axis, and have moving pins at ends, respectively; and is also provided with

The door unit further includes a cam having a plurality of guide grooves into which the moving pins are inserted, and the cam changes rotational positions of the first door and the second door, respectively, by the moving pins moving along the plurality of guide grooves.

8. The air conditioner of claim 7, wherein the plurality of guide grooves of the cam extend in a rotation direction while being bent inward and outward and have different shapes such that timings of opening or closing the exhaust path and the at least one front vent hole are differently set.

9. The air conditioner of claim 5, wherein the air conditioner case includes at least one rear vent hole at a lower portion, and a rear door is installed at the at least one rear vent hole.

10. The air conditioner of claim 9, wherein the rear door comprises:

a fourth door that selectively flows air passing through the heater to the at least one rear vent; and

and a fifth door selectively flowing air passing through the indoor heat exchanger to the at least one rear vent through a bypass path below the heater without passing through the heater.

11. The air conditioner according to claim 1, wherein the door unit comprises: an opening/closing door operating upward and downward in the exhaust path to adjust opening and closing of the exhaust path; and an actuator controlling a position of the opening/closing door.

12. An air conditioning system with an integrated heat exchanger, comprising:

a refrigerant circuit in which a refrigerant circulates, and which includes a compressor, a condenser, an expander, and an evaporator;

a first cooling water circuit in which first cooling water circulates to exchange heat with a condenser of the refrigerant circuit for heating;

a second cooling water circuit in which second cooling water circulates to exchange heat with an evaporator of the refrigerant circuit for cooling;

a valve module to which the first cooling water circuit and the second cooling water circuit are connected, and which changes a flow direction of the first cooling water and the second cooling water; and

an indoor heat exchanger provided in the air-conditioning case, the first and second cooling water circuits being connected to the indoor heat exchanger, and the indoor heat exchanger receiving first cooling water for heating or second cooling water for cooling and generating heating air or cooling air,

wherein in the air conditioning case, a heater spaced apart from the indoor heat exchanger and selectively generating heat is provided, an exhaust path is formed around the heater, and a door unit adjusting opening and closing of the exhaust path is provided.

13. The air conditioning system of claim 12, wherein the indoor heat exchanger comprises: a first heat exchange part connected to the first cooling water circuit and discharging heat through first cooling water for heating; and a second heat exchanger part connected with the second cooling water circuit and absorbing heat by the second cooling water for cooling.

14. The air conditioning system of claim 12, wherein the first cooling water circuit comprises a first water pump and the second cooling water circuit comprises a second water pump.

15. The air conditioning system of claim 12, wherein the first cooling water in the first cooling water circuit and the second cooling water in the second cooling water circuit are selectively shared by a plurality of shared valves.