KR20230174940A - Hybrid air conditioning method for small vehicle and system thereof - Google Patents

Abstract

The present invention relates to an air conditioning system, which includes a plurality of thermal sensors disposed at a plurality of positions within the air conditioning system, a PTC (Positive Temperature Coefficient) heater, a heat accumulator that heats the refrigerant, and a device that compresses the heated refrigerant to a specified pressure and liquefies it. It includes a compressor, an evaporator that evaporates the expanded low-temperature and low-pressure refrigerant, and an air conditioning controller, wherein the air conditioning controller controls the temperature to be measured through the plurality of thermal sensors, and when the measured temperature is below a specified value, the PTC Heating is performed using a heater, and when the measured temperature exceeds a specified value, cooling and heating are controlled using a heat pump method using the regenerator, the compressor, and the evaporator.

Description

Hybrid air conditioning method for small cars and corresponding air conditioning system {HYBRID AIR CONDITIONING METHOD FOR SMALL VEHICLE AND SYSTEM THEREOF}

The present invention relates to an air conditioning method and an air conditioning system, and more specifically, to an air conditioning system that operates a cooling or heating system based on a heat pump or PTC (Positive Temperature Coefficient) heater based on the temperature measured in a small car.

In general, an air conditioning system compresses refrigerant using engine driving power and drives each fan with generated power to cool the car interior while the refrigerant flows, creating a refreshing indoor environment while driving the car.

Since this air conditioning system ultimately uses engine driving power in the prior art, it was mainly used in cars equipped with an engine.

Recently, air conditioning systems for home or office use are not limited to being used only as air conditioning devices that cool the room using electric power, but are also used for heating by using an operating method that flows refrigerant in the reverse of the cooling operation, and are used for heating as well as oil or oil as before. Technology has been developed to enable cooling and heating using only electric power without using gas.

Accordingly, in the automobile field, cars using oil, diesel, or gas have been mainly used so far, but the use of cars using electricity as the main energy source is gradually increasing.

According to this trend, in addition to simply using the engine in the air conditioning system, a non-starting air conditioning system using car battery power is being applied.

However, in conventional air conditioning systems, such as air conditioners, they were mainly used in cases where electricity consumed a lot of energy, such as driving an engine or using household electricity.

In addition, in the case of electric vehicles, small cars such as single or two-seat vehicles are mainly used, but the air conditioning systems for these small cars are poor in overall technology, so due to problems such as reducing power consumption or narrow mounting space, these systems are used. There is a problem that makes it difficult to do this.

In addition, existing cooling and heating systems for small cars use a heat pump method, which has the problem that when operated in a low temperature environment below a certain temperature, external condensate freezes and the indoor temperature becomes very low, resulting in very low heating efficiency.

Registered Patent No. 10-1353147 (announced on January 22, 2014) Publication Patent No. 10-2018-0125640 (published on November 26, 2018)

The purpose of the present invention to solve the above problems is to optimally mount it on small cars with limited space so that even small cars can be driven coolly or warmly through cooling and heating.

Another object of the present invention is to maximize space utilization, especially by mounting it under the rear seat.

In addition, another object of the present invention is to enable the air conditioning system to be operated and used simply by supplying power without any additional devices because it contains all the components that function as a condenser and evaporator inside a single case body.

Another object of the present invention is to allow multiple cooling and heating methods to be used together depending on the measured temperature in order to prevent heating efficiency from being greatly reduced when the temperature falls below a certain level.

The present invention for achieving the above object, in an air conditioning system, includes a plurality of thermal sensors disposed at a plurality of positions inside the air conditioning system, a PTC (Positive Temperature Coefficient) heater, a regenerator for heating the refrigerant, and a heated refrigerant. It includes a compressor that compresses and liquefies the expanded low-temperature and low-pressure refrigerant, an evaporator that evaporates the expanded low-temperature and low-pressure refrigerant, and an air conditioning controller, wherein the air conditioning controller controls to measure the temperature through the plurality of thermal sensors, and the measured temperature. If is below the specified value, heating is performed using the PTC heater, and when the measured temperature exceeds the specified value, cooling and heating are performed using a heat pump method using the regenerator, the compressor, and the evaporator. You can.

The air conditioning method in the air conditioning system of the present invention includes the process of measuring temperature through a plurality of heat sensors, the process of performing heating using a PTC (Positive Temperature Coefficient) heater when the measured temperature is below a specified value, and the process of heating using a PTC (Positive Temperature Coefficient) heater. When the measured temperature exceeds a specified value, it includes a process of performing cooling and heating using a heat pump method, wherein the heat pump method heats the refrigerant with a regenerator and compresses the heated refrigerant with a compressor to a specified pressure. It can be heated by liquefying it, and cooling can be done by evaporating the low-temperature, low-pressure refrigerant expanded by the evaporator.

The air conditioning system of the present invention includes an internal heat exchange unit that receives refrigerant and exchanges heat with flowing heat exchange air, an exhaust heat exchange unit that exchanges heat with external exhaust air, a plurality of heat sensors disposed at a plurality of positions inside the air conditioning system, and a PTC. (Positive Temperature Coefficient) It includes a heater, a refrigerant that heats the refrigerant, a compressor that compresses the heated refrigerant to a specified pressure and liquefies it, an evaporator that evaporates the expanded low-temperature and low-pressure refrigerant, and an air conditioning controller. Controlling the temperature to be measured through a plurality of thermal sensors, performing heating using the PTC heater when the measured temperature is below a specified value, and performing heating using the PTC heater, and when the measured temperature exceeds a specified value, the heat storage device, Cooling and heating are performed using a heat pump method using the compressor and the evaporator, and air flowing into the room is delivered inside through the internal heat exchanger, and air discharged to the outside can be discharged to the outside through the exhaust heat exchanger.

The present invention, configured as described above, is optimally mounted on small cars with limited space, so that even small cars can be driven coolly or warmly through cooling and heating.

Another effect of the present invention is that it is possible to maximize space utilization, especially by mounting it under the rear seat.

Another effect of the present invention is that the air conditioning system can be operated and used simply by supplying power without any additional devices because it contains all the components that function as a condenser and evaporator inside a single case body.

In addition, another effect of the present invention is that the condenser space and the evaporator space are separated even in the space inside the air conditioning system, so the heat and cold air exchanged with each other do not interfere with each other, which has the effect of increasing cooling or heating efficiency. there is.

In addition, an effect according to another embodiment of the present invention is that a plurality of cooling and heating methods can be used interchangeably according to the measured temperature, thereby preventing heating efficiency from being greatly reduced even if the temperature falls below a certain level.

Figure 1 is an exemplary diagram showing an example of the air conditioning system according to the present invention being mounted on a small car.
Figure 2 is a perspective view of the front of the air conditioning system according to the present invention.
Figure 3 is a rear perspective view of the bellows type of the air conditioning system according to the present invention.
Figure 4 is an example diagram to explain that a condenser and an evaporator are installed in the bellows type air conditioning system according to the present invention.
Figure 5 is a rear perspective view of a square discharge embodiment of the air conditioning system according to the present invention.
Figure 6 is a front perspective view to explain the interior of the air conditioning system according to the present invention from the front.
Figure 7 is a rear illustration of an example of installing the indoor filter laterally in the air conditioning system according to the present invention.
Figure 8 is an exemplary rear view of an example of installing an indoor filter upward in the air conditioning system according to the present invention.
Figure 9 is a system configuration diagram of the air conditioning system according to the present invention.
Figure 10 is a front perspective view to explain the interior from the front of an air conditioning system according to another embodiment of the present invention.
Figure 11 is a diagram showing the internal structure of an air conditioning system according to another embodiment of the present invention.
Figure 12 is a flowchart showing the operation of controlling air conditioning in an air conditioning system according to another embodiment of the present invention.

Hereinafter, it will be described in detail with reference to the attached drawings.

That is, the low-power air conditioning system 10 for a small car according to the present invention relates to an air conditioning system for a small car to be driven at low power, as shown in the attached FIGS. 1 to 12, and is operated by receiving power, but compresses the refrigerant. It relates to an air conditioning system (10) that includes a compressor that compresses the condensed refrigerant, an expansion valve that condenses the condensed refrigerant, a condenser that condenses the compressed refrigerant, and an evaporator that evaporates the refrigerant.

Accordingly, the so-called no-start air conditioning system (no-start air conditioner) is constructed as an air conditioning system that is driven only by power sources such as batteries without engine driving force. This no-start air conditioning system consists of a compressor, expansion valve, condenser (condenser) for the flow of refrigerant, The main components are an evaporator, etc., and since the technology for this non-activating air conditioning system applies already known technology, detailed technical description of this non-activating air conditioning system will be omitted.

Hereinafter, it will be mainly explained that the low-power air conditioning system 10 for a small car according to the present invention is mounted and applied to a small car that uses low power. In the case of a small car, since it is driven only by battery power, the present invention is operated at low power. In the case of an air conditioning system according to , it will naturally be considered to be operated with low power.

And, as in the example of FIG. 9, this air conditioning system 10 includes a heat exchange system 16 including a compressor and an expansion valve, and is operated under the control of the air conditioning controller 20, and various blowers including a condenser and evaporator. Fans, etc. will be operated under the control of the air conditioning controller 20.

That is, an upper heat exchange indoor air supply configuration 30 is provided, which is located on one side of the air conditioning system 10 and discharges the heat exchanged air to the indoor side.

It also includes a lower heat exchange external air discharge member 40 located at the rear of the air conditioning system 10 to discharge external exhaust air.

Accordingly, the internal heat exchange unit 31 of the upper heat exchange indoor air supply configuration 30 and the discharge heat exchange unit 41 of the lower heat exchange external air discharge configuration 40 are used as condensers or evaporators depending on the installation or operation situation. Therefore, if the internal heat exchange unit 31 of the upper heat exchange indoor air supply configuration 30 is applied as a condenser, the air conditioning system will be used as a heater, and the internal heat exchanger of the upper heat exchange indoor air supply configuration 30 will be used as a heater. If unit 31 is applied as an evaporator, the air conditioning system will be used as a cooler. The use of such condensers, evaporators, etc. may be used while replacing the air conditioning system, but it may also be implemented while controlling the flow of refrigerant by controlling the air conditioning controller 20 for the circulator configuration of the refrigerant in the air conditioning system. In other words, the technology of a general office or home heating/cooling air conditioner can be applied, and since its technical configuration can be operated by applying already known matters, detailed technical description will be omitted.

Upper heat exchange indoor air supply configuration Bottom heat exchange external air discharge configuration heating condenser evaporator cooling evaporator condenser

(Example of application of air conditioner)

In the low-power air conditioning system (10) for a small vehicle according to the present invention provided as described above, the internal heat exchange unit (31) of the upper heat exchange indoor air supply component (30) supplies cold or hot heat exchange air to the interior. For this purpose, a porous internal heat exchange part (31) is provided to exchange heat with the heat exchange air that receives the refrigerant from the heat exchange system (16), and also allows the internal air to pass through the porous internal heat exchange part (31). An internal fan 32 is provided, and when the internal fan 32 operates, indoor air passes through the internal heat exchange unit 31 to exchange heat with the refrigerant.

In this way, an indoor supply port 33 is provided through which air heat-exchanged while passing through the internal heat exchanger 31 by the internal fan 32 is supplied into the room.

This indoor supply port 33 is provided with a direction control plate 331 that adjusts the direction of heat exchange air supplied into the room. More preferably, the direction control plate 331 is rotated to adjust the angle so that the user can It would be desirable to supply heat exchanged air in the direction in which it is located.

And the upper heat exchange indoor air supply configuration (30) includes a filtering configuration for the air sucked in by the internal fan (32), and is installed on the rear of the internal heat exchange unit (31) to supply the air to the internal heat exchange unit (31). It is provided with an indoor filter (34) that filters the flowing indoor air. In this way, indoor foreign substances are removed and supplied back into the room, and the indoor filter 34 will be able to provide a more comfortable indoor environment by applying an antibacterial filter in addition to simply removing foreign substances.

It also includes an indoor filter case 35 provided on the rear of the air conditioning system 10 and into which the indoor filter 34 is mounted.

The indoor filter case 35 may be provided with a lateral exchange case 351 for mounting the indoor filter 34 laterally as shown in FIG. 7 .

In addition, as shown in FIG. 8, the indoor filter 34 can be mounted upward by providing an upward exchange case 352 for mounting the indoor filter 34 upward.

Next, the lower heat exchange external air discharge configuration 40 is a configuration corresponding to the upper heat exchange indoor air supply configuration 30 described above, and the discharge heat exchange unit 41 of the lower heat exchange external air discharge configuration 40 is a condenser or evaporator. It can be used for things like this, and the air exhausted through heat exchange is discharged to the outside.

That is, it is provided with a porous exhaust heat exchange unit (41) that receives refrigerant from the heat exchange system (16) and exchanges heat with the discharged external exhaust air, and also has an exhaust unit that allows the external exhaust air to pass through the porous exhaust heat exchange unit (41). A fan 42 is provided.

In addition, it includes an external outlet 43 through which external exhaust air heat-exchanged while passing through the exhaust heat exchanger 41 by the exhaust fan 42 is discharged.

Accordingly, the external outlet 43 is composed of a square outlet 431 forming a square shape or a bellows outlet 432 to which the bellows 433 are combined, as in the examples of FIGS. 3 to 5. These external exhaust ports (43) discharge the heat-exchanged external exhaust air to the outside of the vehicle. Separate exhaust outlets or bellows (433) are combined with the square outlet (431) and bellows outlet (432) to discharge the heat-exchanged air to the outside. It is prepared so that it can be discharged.

In addition, a discharge inducing part 434 is provided to allow external exhaust air to flow through the bellows discharge port 432. As in the example of FIG. 3, the discharge guide 434 has a wide triangular side cross-sectional structure in the upward direction where the bellows 433 are attached. As a result, external exhaust air collects in the upward direction of the discharge guide 434. As it flows into the bellows outlet (432) on the side, it may eventually be discharged through the bellows (433).

The low-power air conditioning system 10 for a small vehicle according to the present invention prepared as described above includes an air conditioning case 11 forming the body of the air conditioning system 10, and a heat exchange system ( The configuration of 16) includes a compressor, expansion valve, etc., and the refrigerant flows and flows through the upper heat exchange indoor air supply configuration 12 and the lower heat exchange external air discharge configuration 14 connected to the heat exchange system 16 and the pipe. Together, through the operation of each blowing fan (internal fan 32, exhaust fan 42), the indoor air is heat exchanged and supplied into the room or discharged to the outside.

In addition, the air conditioning case 11 is equipped with a control panel 21 on the front, and a signal by operating the control panel 21 is transmitted to the air conditioning controller 20 to operate the overall air conditioning system 10. It comes true.

In addition, an external outlet 43 is provided on one side of the back to discharge external air discharged to the outside, and a heat exchange inlet hole 113 is formed on the other side of the back to introduce air supplied into the room, and a heat exchange inlet hole (113) is provided on the other side of the back. The air flowing into 113) is supplied to the internal heat exchange unit (31).

In addition, indoor supply ports 33 are provided on both sides to supply heat exchange air to the indoor space, thereby creating a comfortable indoor environment.

In addition, an inflow hole is formed to flow into the air conditioning case 11 so that the external exhaust air discharged to the outside is supplied to the exhaust heat exchanger 41, and the inflow hole is formed through a side inlet hole formed on the side of the air conditioning case 11 ( 111) and a front inlet hole 112 formed on the front, through which indoor air flows into the air conditioning case 11.

And in the middle of the air conditioning case 11, an upper and lower partition wall 115 is formed, which is a partition wall dividing the upper part and the lower part, as shown in FIG. 6. That is, the flow path through which heat-exchanged air is supplied from the upper side of the upper and lower partition walls 115 to the interior by these upper and lower partition walls 115, the flow path of external exhaust air discharged to the outside from the lower side of the upper and lower partition walls 115, etc. This can be distinguished.

In the low-power air conditioning system 10 for a small vehicle according to the present invention prepared in this way, the detailed configuration of the air conditioning case 11, which becomes the external case body, is summarized as follows. That is, the control panel 21 is located at the front, and a heat exchange system 16 including a compressor and expansion valve is provided inside, and an air conditioning controller 20 is also located inside.

In addition, the upper part is provided with an upper heat exchange indoor air supply structure 30 that exchanges heat with indoor air flowing in from the back and supplies the heat exchanged air back to the indoor space.

In addition, the lower part of the air conditioning case 11 is provided with a lower heat exchange external air discharge configuration 40 that exchanges heat with indoor air flowing in through one or more holes including both sides and discharges it to the outside.

In general, this upper heat exchange indoor air supply configuration 30 is located at the top, and the lower heat exchange external air discharge configuration 40 is located at the lower rear portion, and a heat exchange system such as a compressor and expansion valve for heat exchange operation toward the bottom and front ( 16) and an air conditioning controller 20 are provided.

In addition, there is a heat exchange inlet hole 113 through which indoor air is introduced into the upper rear part of the air conditioning case 11, and the introduced indoor air passes through the indoor filter 34 and enters the internal heat exchange unit 31 of the upper heat exchange indoor air supply configuration 30. ), and the heat exchanged air in the upper heat exchange indoor air supply configuration (30) is supplied to the room through the indoor supply ports (33) on both sides by the operation of the internal fans (32) on both sides through the upper heat exchange indoor supply air flow path. It is to form. Accordingly, the indoor air passes through the upper heat exchange indoor air supply unit 30 and forms a comfortable indoor condition through a filter, etc.

In addition, indoor air flows into the lower heat exchange external air discharge configuration (30) inside the air conditioning case (11) through the front inlet hole (112) under the front of the air conditioning case (11) and the side inlet hole (111) under both sides, The air introduced by the exhaust fan (42) passes through the exhaust heat exchanger (41), exchanges heat, and is then discharged to the outside through the external outlet (43) under the rear of the air conditioning case (11) through the lower heat exchange external exhaust air flow path. It is to form.

In this way, the air flow path through which heat exchange air is supplied to the interior and the flow path of external exhaust air discharged to the outside after relative heat exchange are formed separately from each other, so even though the air conditioning system 10 is operated with small size and low power, It also effectively improves operating efficiency by making the car interior more comfortable.

In addition, this minimizes the space occupied by the air conditioning system 10, making it possible to operate optimally in small cars with little interior space.

Figure 10 is a front perspective view to explain the interior from the front of an air conditioning system according to another embodiment of the present invention.

Referring to FIG. 10, the air conditioning system 1000 can perform cooling and heating operations using a heat pump method using an evaporator 1020 or a method using a Positive Temperature Coefficient (PTC) heater 1010.

According to another embodiment of the present invention, the heat pump method is a cooling and heating method that uses heat generated during the phase transition of the refrigerant, and can be operated at low power of 720W or less, but can be operated at low temperatures below a certain temperature (e.g., minus 7°C). When operating in an environmentally friendly environment, external condensate may freeze and the temperature discharged indoors may drop below 10°C, greatly reducing heating efficiency.

According to another embodiment of the present invention, the PTC heater 1010 can quickly increase the internal temperature by heating the air inside the vehicle using a semiconductor device whose electrical resistance changes rapidly depending on temperature.

According to another embodiment of the present invention, in order to enable rapid heating even in low-temperature environments, when the temperature is measured below the standard temperature, the air conditioning system 1000 converts the heat pump method to a method using the PTC heater 1010 to operate the cooling and heating system. It can be driven.

Figure 11 is a diagram showing the internal structure of an air conditioning system according to another embodiment of the present invention.

Referring to FIG. 11, the air conditioning system 100 includes an air conditioning controller (not shown), an internal heat exchanger 31, an exhaust heat exchanger 41, a PTC heater 1010, an evaporator 1020, and an HTR (heater) office. (1031), A/C (air conditioner) office (1032), compressor (1040), heat storage (1041), heat sensor (1051, 1052), two-way valve (1061), and three-way valve (1062). can do.

According to another embodiment of the present invention, the internal heat exchange unit 31 discharges heat exchanged heat exchange air to the indoor side, and the exhaust heat exchange unit 41 can perform heat exchange with external exhaust air that is supplied with refrigerant and discharged.

According to another embodiment of the present invention, the air conditioning system 100 may operate the cooling and heating system using a heat pump method. For example, the air conditioning controller can cause the evaporator 1020 to evaporate the expanded low-temperature, low-pressure refrigerant to produce a cooling effect. Meanwhile, for the heating effect, the air conditioning controller can allow the low-temperature, low-pressure refrigerant evaporated in the evaporator 1020 to be heated through the heat accumulator 1041 and compressed in the compressor 1040 to radiate heat through the internal heat exchange unit 31. there is.

According to another embodiment of the present invention, the regenerator 1041 heats the refrigerant using electricity, and the compressor 1040 compresses the refrigerant to a specified pressure and liquefies it.

According to another embodiment of the present invention, the air conditioning controller measures the temperature of the air using thermal sensors 1051 and 1052 disposed at various locations in the air conditioning system 1000, and sets the measured temperature to a set value (e.g. When the temperature is -7°C or lower, the refrigerant evaporated in the evaporator 1020 can be controlled to dissipate heat through the PTC heater 1010 without passing through the compressor 1040.

According to another embodiment of the present invention, the air conditioning system 1000 includes an HTR office 1031 that controls the flow of compressed heating refrigerant and A/A that controls the flow of evaporated cooling refrigerant in order to control the flow rate of the fluid. It may include C (air conditioner) office (1032).

According to another embodiment of the present invention, a plurality of thermal sensors 1051 and 1052 are disposed at various locations inside the air conditioning system 1000 and can measure the internal temperature at each location. The air conditioning controller checks the lowest temperature value or average temperature value among the temperature values measured from the plurality of heat sensors (1051, 1052), and selects the cooling/heating method based on the confirmed temperature value as a PTC heater (1010)-based method or a PTC heater (1010)-based method. It can be decided by heat pump method.

According to another embodiment of the present invention, the two-way valve 1061 and the three-way valve 1062 can control the flow of refrigerant. The two-way valve 1061 can control the cooled or heated refrigerant to be delivered to the internal heat exchange unit 31 or the exhaust heat exchange unit 41. The three-way valve 1062 can control heat exchange between the exhaust heat exchanger 41, the regenerator 1041, or the evaporator 1020.

Figure 12 is a flowchart showing the operation of controlling air conditioning in an air conditioning system according to another embodiment of the present invention.

Referring to FIG. 12, in operation S1210, the air conditioning controller can measure temperature using the thermal sensors 1051 and 1052.

Depending on the performance of the above-described operation S1210, the air conditioning controller may determine whether the measured temperature is below the specified temperature in operation S1220.

If the temperature measured as a result of performing the operation S1220 described above is below the specified temperature, the air conditioning controller may control heating and cooling based on the PTC heater 1010 in operation S1230.

According to another embodiment of the present invention, in order to prevent heating efficiency from decreasing as the indoor temperature of the air conditioning system 1000 is low, when the measured temperature value is below a specified temperature (e.g. -7°C), the electrical resistance is adjusted. Heating can be controlled using a PTC heater (1010), which can quickly control the temperature by rapidly changing it.

If the temperature measured as a result of performing the operation S1220 described above is greater than the specified temperature, the air conditioning controller may control heating and cooling based on the heat pump in operation S1240.

According to another embodiment of the present invention, the heat pump-based cooling and heating method implements cooling and heating using the heat generated during the phase transition process of the refrigerant, and is more efficient than the method using the PTC heater 1010, so it can be operated even at low power. Therefore, the air conditioning controller can control cooling and heating using a heat pump method in environments where the temperature exceeds a certain temperature.

The embodiments of the present invention have been described in detail above, but since this is an embodiment so that a person skilled in the art of the present invention can easily practice the present invention, the description of the embodiments The technical idea of the present invention should not be construed as limited.

10, 100: air conditioning system 16: heat exchange system
20: Air conditioning controller 30: Upper heat exchange indoor air supply configuration
34: Indoor filter 40: Lower heat exchange external air discharge configuration
433: Javara
31: Internal heat exchange unit
41: Exhaust heat exchange unit
1010: PTC heater
1020: Evaporator (1020
1031: HTR (heater) Officeless
1032: A/C (air conditioner) Officeless
1040: Compressor
1041: Heat storage device
1051, 1052: thermal sensor
1061: Two-way valve
1062: 3-way valve

Claims (6)

A plurality of heat sensors disposed at a plurality of locations within the air conditioning system;
Positive Temperature Coefficient (PTC) heater;
A regenerator that heats the refrigerant;
A compressor that compresses heated refrigerant to a specified pressure and liquefies it;
An evaporator that evaporates the expanded low-temperature and low-pressure refrigerant; and
Including an air conditioning controller,
The air conditioning controller is,
Controlling the temperature to be measured through the plurality of thermal sensors,
If the measured temperature is below the specified value, heating is performed using the PTC heater,
An air conditioning system characterized in that, when the measured temperature exceeds a specified value, control is performed to perform cooling and heating by a heat pump method using the regenerator, the compressor, and the evaporator. According to paragraph 1,
An air conditioning system, characterized in that the specified value is minus 7°C. In the air conditioning method in the air conditioning system,
A process of measuring temperature through a plurality of thermal sensors;
If the measured temperature is below a specified value, heating is performed using a PTC (Positive Temperature Coefficient) heater; and
If the measured temperature exceeds a specified value, performing cooling and heating using a heat pump method; including,
The heat pump method is an air conditioning method characterized by heating the refrigerant with a regenerator, compressing the heated refrigerant with a compressor to a specified pressure and liquefying it for heating, and cooling the low-temperature, low-pressure refrigerant expanded with an evaporator by evaporating it. According to paragraph 3,
An air conditioning method, characterized in that the specified value is minus 7°C. In the air conditioning system,
An internal heat exchange unit that receives refrigerant and exchanges heat with flowing heat exchange air;
An exhaust heat exchanger that exchanges heat with external exhaust air;
A plurality of heat sensors disposed at a plurality of locations within the air conditioning system;
Positive Temperature Coefficient (PTC) heater;
A regenerator that heats the refrigerant;
A compressor that compresses heated refrigerant to a specified pressure and liquefies it;
An evaporator that evaporates the expanded low-temperature and low-pressure refrigerant; and
Including an air conditioning controller,
The air conditioning controller is,
Controlling the temperature to be measured through the plurality of thermal sensors,
If the measured temperature is below the specified value, heating is performed using the PTC heater,
When the measured temperature exceeds the specified value, cooling and heating are performed using a heat pump method using the regenerator, the compressor, and the evaporator,
An air conditioning system characterized in that air flowing into the room is delivered inside through the internal heat exchanger, and air discharged to the outside is discharged to the outside through the exhaust heat exchanger. According to clause 5,
An air conditioning system, characterized in that the specified value is minus 7°C.