KR100981122B1 - Indoor air conditioner - Google Patents

Abstract

PURPOSE: An indoor air conditioning device is provided to save energy by selectively operating an air conditioner, an air intake/discharge unit and a heat exchanger depending on indoor and outdoor conditions. CONSTITUTION: An indoor air conditioning device comprises a sensor unit(100), an air conditioner(300), an air intake/discharge unit(400), a heat exchanger(500), and a controller(200). The sensor unit comprises an outdoor temperature sensor(110), an indoor temperature sensor(120), and an outdoor humidity sensor(130) and an indoor humidity sensor(140). The air conditioner circulates and cools the indoor air. The air intake/discharge unit discharges the indoor air to outside and supplies the outdoor air to inside. The heat exchanger heat-exchanges the outdoor air flowing into inside with the indoor air discharged to outside. The controller receives a sensing signal of the sensors to select and operate at least one of the air conditioner, the air intake/discharge unit and the heat exchanger. The air conditioner starts operation if the condition sensed by the sensors corresponds to a summer condition, the air intake/discharge unit starts operation if the condition corresponds to a in-between season condition and the heat exchanger starts operation if the condition corresponds a winter condition.

Description

Indoor air conditioner {INDOOR AIR CONDITIONER}

The present invention relates to an indoor air conditioner, and more particularly, to an indoor air conditioner for comfortably maintaining indoor air having high temperature and humidity, such as a kitchen.

In general, the inside of the kitchen for cooking food is a high temperature and humidity due to the high heat generated from the cooker and moisture generated from the food. Especially in places where a large amount of food is cooked, such as schools, buildings, and public institutions, a large number of combustors are generated to generate high heat, and thus the inside of the kitchen is maintained at a high temperature. Therefore, the cooks have to cook food in an uncomfortable environment. There is discomfort.

In order to lower the temperature inside the kitchen and ventilate the air, an air conditioner and a ventilator were installed. However, if the air conditioner is operated in a hot summer and the room temperature is lowered and the ventilation system is operated together to discharge the polluted indoor air to the outside, the indoor air cooled by the air conditioner is released to the outside, which wastes energy. Becomes

In addition, the inside of the kitchen has a particularly high temperature around the combustor, since the heat generated from the combustor is moved to another space inside the kitchen (the space without the combustor), there is a problem that does not significantly effect the effect of the room temperature drop even when the air conditioner is operated.

On the other hand, even in the winter, even if there is heat generated from the combustor, the inside of the kitchen may need to be heated. In this case, when the ventilator is operated for indoor ventilation, cold outdoor air is introduced as it is, thereby lowering the indoor temperature, thereby requiring additional heating.

Therefore, even if the temperature and humidity are high, such as a kitchen, even if the air conditioner and the ventilation system are operated, the energy of the cooled air or the heated air cannot be used efficiently, which results in a large cost for indoor air conditioning. The necessity of operating the system is raised.

The present invention has been made to solve the above-mentioned problems, an object of the present invention is to provide an indoor air conditioner that can save energy by efficiently utilizing the energy of the indoor air.

Another object of the present invention is to provide an indoor air conditioner that can effectively lower the room temperature.

Indoor air conditioner of the present invention for achieving the above object, the outdoor temperature sensor 110 for measuring the outdoor temperature and the indoor temperature sensor 120 for measuring the indoor temperature and the outdoor humidity sensor 130 for measuring the outdoor humidity and A sensor unit 100 including an indoor humidity sensor 140 for measuring indoor humidity; An air conditioner 300 circulating and cooling indoor air; An air supply / exhaust system 400 for discharging indoor air to the outside and supplying the outdoor air to the interior; A heat exchanger 500 in which heat exchange is performed between the outdoor air introduced into the room and the indoor air discharged to the outside; Receiving a detection signal of the sensor unit 100 includes a control unit 200 for controlling to drive any one or more of the air conditioner 300, the supply and exhaust device 400 and the heat exchanger 500.

According to the present invention, energy can be saved by selectively operating the air conditioner, the air supply / exhaust system, and the heat exchanger according to indoor / outdoor conditions. In addition, by installing an air supply unit to serve as an air curtain outside the heat generating region where heat is generated, it is possible to block the diffusion of heat from the heat generating region to the non-heating region, thereby creating a pleasant environment. In addition, by installing the excess heat exhaust to quickly discharge the contaminants and excess heat generated during cooking has the effect that can provide a pleasant working environment by preventing a comfortable room conditions and room temperature rise. In addition, it is possible to efficiently use energy by varying the rotational speed of the air supply fan and the exhaust fan according to indoor / outdoor conditions.

Hereinafter, the configuration and operation of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an air conditioner according to the present invention.

The present invention, the sensor unit 100 for measuring indoor and outdoor temperature and humidity, the control unit 200 is connected to the sensor unit 100 receives a signal and sends a drive signal, the air conditioner to circulate cooling the indoor air ( 300), the air supply and exhaust device 400 for discharging the indoor air to the outside while supplying the outdoor air to the indoor, and a heat exchanger 500 that performs heat exchange between the outdoor air introduced into the room and the indoor air discharged to the outdoor do.

The sensor unit 100 includes an outdoor temperature sensor 110 for detecting an outdoor temperature, an indoor temperature sensor 120 for detecting an indoor temperature, an outdoor humidity sensor 130 for detecting an outdoor humidity, and an indoor humidity for detecting an indoor temperature. Humidity sensor 140 is included. Although not shown in Figure 1, the sensor unit 100 may further include a carbon dioxide sensor (not shown in the figure) for measuring the indoor pollution degree by carbon dioxide.

The controller 200 uses the indoor / outdoor temperature and humidity information received from the sensor unit 100 to determine the condition of the air conditioner 300, the exhaust / air supply unit 400, and the heat exchanger 500 according to a preset condition. It will control the driving.

The air conditioner 300 may be provided separately from a heating device (not shown in the figure), but may be integrally provided with a cooling and heating unit that combines cooling and heating.

The air supply and exhaust device 400 includes an exhaust unit for discharging indoor contaminated air to the outside, and an air supply unit for introducing fresh outdoor air into the room. The exhaust part includes an exhaust fan that rotates by a motor and an exhaust pipe through which air exhausted to the outside flows. In addition, the air supply unit is composed of a supply fan that is a passage through which the air supplied to the fan (fan) rotated by the motor and the room flows.

The heat exchanger 500 includes an exhaust unit for discharging indoor contaminated air to the outside, an air supply unit for introducing fresh outdoor air into the room, and a heat exchange unit for performing heat exchange between the exhausted air and the air supplied to the air Equipped. The exhaust part and the air supply part of the heat exchanger 500 include a motor, an exhaust pipe, and an air supply pipe, and include the same configuration as the exhaust part and the air supply part of the air supply and exhaust device 400. The heat exchanger 500 may lower the temperature of the outdoor air introduced into the room by mutual heat exchange in the process of discharging / inflowing the cold indoor air and the high temperature outdoor air, and the high temperature indoor air and the cold outdoor air are discharged / inflowed. By heat exchange with each other during the process, the temperature of outdoor air flowing into the room can be increased. Therefore, it is possible to save energy by recovering waste heat from the exhausted air.

Figure 2 is a plan view showing an air conditioner according to an embodiment of the present invention.

2 shows a kitchen that cooks and feeds in a school or the like. The indoor unit may be divided into a heat generating area in which heat is generated for cooking food and a non-heating area in which utensils for cooking preparation (a dishwasher, a sink, etc.) are provided. The heat generating region and the non-heating region are divided by a dotted line.

The supply / exhaust system 400 supplies the primary exhaust unit 410, the excess heat exhaust unit 420 for exhausting excess heat that is not exhausted from the primary exhaust unit 410, and outdoor fresh air to the room. And air supply units 430 and 430 '.

The primary exhaust unit 410 may include an exhaust fan 411 that is rotated by driving of a motor, an exhaust pipe 412 through which air exhausted in connection with the exhaust fan 411 flows, a combustor 11, 12, 13, The exhaust hood 413 is installed at the upper portion of the exhaust pipe 14 to direct high temperature air generated by the combustors 11, 12, 13, and 14 to the exhaust pipe 412.

The air containing excess heat, humidity, and odor that is not exhausted through the exhaust hood 413 of the primary exhaust unit 410 and raised to the upper portion of the kitchen is further exhausted through the excess heat exhaust unit 420. The kitchen was kept clean and the workers were able to work comfortably.

The excess heat exhaust unit 420 is connected to the exhaust fan 421 which is rotated by the driving of the motor, the exhaust fan 421 is connected to the exhaust pipe 422 through which air containing excess heat flows, the ceiling to communicate with the room It is provided in the exhaust port 423 to guide the air into the exhaust pipe 422.

In the present embodiment, the exhaust port 423 is installed at a position adjacent to the exhaust hood 413 installed directly above the combustor 15, but is not limited thereto. If it is a position that can block the other may be installed in the vicinity of the combustor (15).

The air supply units 430 and 430 'are connected to air supply fans 431 and 431' which are rotated by driving of the motor, air supply pipes 432 and 432 'which connect outdoor air to the indoor air, and indoor ceilings. It is installed and consists of the air supply port (433, 433 ') for discharging the air introduced through the air supply pipe (432,432') to the room.

The air supply unit 430 is installed to supply air to a boundary point between the heating region and the non-heating region. That is, the air discharged to the room from the air supply 433, 433 'is formed in the flow direction from the ceiling to the floor to act as an air curtain (air curtain) can prevent the heat transfer from the heat generating area to the non-heating area. Will be. Therefore, the non-heating area where the worker works can block the heat transfer to maintain a comfortable indoor environment.

Figure 3 is a side schematic view showing an air conditioner according to another embodiment of the present invention.

Referring to FIG. 3, a primary exhaust unit 410, an excess heat exhaust unit 420, and an air supply unit 430 are provided. In this embodiment, the excess heat exhaust portion 420 is installed on the ceiling between two exhaust hoods 413 and 413 '. The exhaust hoods 413 and 413 'are installed directly above the combustor. In this case, the air supply unit 430 is provided on the side of the non-heating region that is outside the two exhaust hoods 413 and 413 '.

Due to this structure, the excess heat which is not exhausted through the two exhaust hoods 413 and 413 'is exhausted through the excess heat exhaust unit 420, in which case, the air is discharged downward through the air supply 433 of the air supply unit 430. Since the discharged air acts as an air curtain, it is possible to prevent excess heat that has not been exhausted through the exhaust hood 413 'installed on the outer side toward the non-heating region and at the same time to the exhaust port 423 side of the excess heat exhaust unit 420. Will lead to. Therefore, it is possible to more smoothly discharge the excess heat.

The air supply unit 430 is provided with a filter (not shown) to purify the air supplied to the room.

In the present embodiment, the exhaust hoods 413 and 413 'are two cases, but three or more exhaust hoods 413 and 413' are obvious to those skilled in the art.

Figure 4 is a plan view showing an air conditioner according to another embodiment of the present invention.

Referring to Fig. 4, three exhaust hoods 413 and 413'413 " are connected to the exhaust pipe 412, and air supply ports 433 and 433 'are provided between the exhaust hoods 413 and 413'413 " Exhaust ports 423, 423 '423 "of the base 420 are provided in the ceiling of the non-heat generating area.

According to this structure, the excess heat that is not exhausted through the exhaust hoods 413 and 413 '413 " cannot be moved laterally by the air discharged from the air supply ports 433 and 433', and the exhaust ports 423 and 423 of the excess heat exhaust unit 420. '423') flow is induced to the exhaust side of the excess heat is made smoothly.

5 is a view schematically showing an air conditioner according to another embodiment of the present invention.

Referring to FIG. 5, a heat exchanger 500 is additionally provided in addition to the supply / exhaust apparatus 400. The air supply and exhaust device 400 includes a primary exhaust unit 410, an excess heat exhaust unit 420, and an air supply unit 430. The heat exchanger 500 includes a heat exchanger 510 in which heat exchange is performed between air supplied and exhaust air. In this case, the exhaust pipes 412 and 422 and the air supply pipe 432 of the air supply and exhaust device 400 and the exhaust pipe 522 and the air supply pipe 532 of the heat exchanger 500 are formed of separate pipes. When the heat exchange is made through the heat exchanger 500, energy of indoor air discharged to the outside may be recovered, thereby saving energy.

6 is a view schematically showing an air conditioner according to another embodiment of the present invention.

Referring to FIG. 6, the air supply pipe 532 connected to the heat exchanger 500 is connected to the air supply pipe 432 connected to the air supply unit 430, and a direction switching valve for changing the flow path of air at a point connected thereto. 600) is installed. In addition, the exhaust pipe 522 connected to the heat exchanger 500 is connected to the exhaust pipes 412 and 422 connected to the exhaust parts 410 and 420, and a direction change valve 600 ′ for changing an air flow path is installed at the connection point.

When the air supply and exhaust device 400 is operated, the two direction switching valves 600 and 600 'are opened to the air supply pipe 432 and the exhaust pipes 412 and 422, respectively, and when the heat exchanger 500 is operated, the two direction changeovers are performed. The valves 600 and 600 'are opened to the air supply pipe 532 and the exhaust pipe 522 of the heat exchanger 500, respectively.

According to this structure, it is possible to simplify the configuration of the air supply pipe and the exhaust pipe installed above the indoor ceiling compared to the structure shown in FIG.

7 is a flowchart illustrating an operation process of the air conditioner of the present invention.

Referring to FIG. 7, the control unit 200 receives a detection signal from the sensor unit 100 and controls to select and drive one or more of the air conditioner 300, the air supply / exhaust apparatus 400, and the heat exchanger 500. The process is shown.

First, the controller 200 determines whether it is a summer, a season or a winter condition from the outdoor temperature / humidity detected by the sensor unit 100 (S1001, S1002, S1003). Herein, the summer conditions may be set to be equal to or greater than the first reference temperature indicating the outdoor temperature during summer. The season period condition may be set such that the measured outdoor temperature is between the second reference temperature and the first reference temperature representing the spring / autumn outdoor temperature. The winter conditions may be set such that the measured outdoor temperature is less than the second reference temperature representing the winter outdoor temperature. In this case, it is preferable to further consider the humidity conditions together with the temperature conditions.

When it is determined that the summer condition is determined from the outdoor temperature / humidity detected by the sensor unit 100, the air conditioner 300 is operated for indoor cooling (S1001 and S1101). In this case, if it is determined that indoor ventilation is a condition to be ventilated from the indoor / humidity and other carbon dioxide concentration detected by the sensor unit (S1102), the air supply / exhaust apparatus 400 may be further operated or the heat exchange apparatus 500 may be used. Can be operated additionally. When operating the air supply and exhaust device 400, the indoor air cooled by the air conditioner 300 is discharged to the outside as it is, wastes energy. Therefore, when the indoor cooling is performed by the air conditioner 300 and the room temperature becomes lower than the preset temperature, it is preferable to additionally operate the heat exchanger 500 for indoor ventilation (S1301). In this case, heat exchange is performed between the cold air in the room and the hot air in the outdoor in the heat exchanger 500, thereby lowering the temperature of the air introduced into the room, thereby reducing the operating time of the air conditioner 300. Therefore, there is an energy saving effect.

When it is determined that the intermittent condition is determined from the outdoor temperature / humidity detected by the sensor unit 100, only the air supply / exhaust apparatus 400 may be operated (S1002 and S1201). That is, in the case of the interseason condition, even if the air conditioner 300 is not operated, the indoor air can be comforted only by the outdoor air. Therefore, it is possible to prevent energy waste due to the operation of the air conditioner 300.

In this case, it is preferable to divide the indoor temperature and humidity information sensed by the sensor unit into a range of steps to adjust the air volume of the air introduced into the room or discharged to the outside through the supply / exhaust device 400 in each step. (S1202, S1203). For example, if the room temperature rises above 28 degrees, the air volume is automatically adjusted to lower the kitchen temperature. Here, the air volume control is performed by adjusting the rotation speed of the motor for driving the air supply fan and the exhaust fan. In this way, by controlling the ventilation amount by varying the optimal ventilation amount to save energy. In general, the power required to drive the fan is known to be proportional to the third power of the rotation speed, so if the rotation speed is reduced to 1/2, the power is reduced to 1/8.

When it is determined that the winter condition is determined from the outdoor temperature / humidity detected by the sensor unit 100, only the heat exchanger 500 may be operated (S1003 and S1301). That is, in the case of winter conditions, when the outdoor temperature is too low and only the air supply and exhaust apparatus 400 is operated, the indoor temperature may be excessively lowered due to the cold air of the outdoor. Therefore, in this case, it is possible to prevent the excessive drop of the room temperature by transferring the heat of the air discharged to the outside to the air flowing into the room through the heat exchanger 500.

In this case, it is preferable to divide the room temperature and humidity information sensed by the sensor unit 100 into a range of steps to adjust the air volume of the air introduced into the room or discharged to the outside through the heat exchanger 500 at each step ( S1302, S1303).

On the other hand, the amount of air introduced into the room through the air supply and exhaust device 400 and the heat exchanger 500 controls the rotation speed of the air supply fan and the exhaust fan so that the volume is 20% to 30% more than the amount of air discharged to the outside. desirable. Therefore, it is possible to keep the room in a positive pressure state to prevent the uncontaminated outside contaminated air from entering the room.

1 is a configuration diagram of an air conditioner according to the present invention;

Figure 2 is a plan view showing an air conditioner according to an embodiment of the present invention,

Figure 3 is a side schematic view showing an air conditioner according to another embodiment of the present invention,

4 is a schematic plan view showing an air conditioner according to another embodiment of the present invention;

5 is a view schematically showing an air conditioner according to another embodiment of the present invention;

6 is a view schematically showing an air conditioner according to another embodiment of the present invention;

7 is a flow chart showing the operation of the air conditioner of the present invention;

Explanation of symbols on the main parts of the drawings

100 sensor unit 200 control unit

300: air conditioner 400: air supply and exhaust device

410: primary exhaust unit 420: excess heat exhaust unit

430: air supply unit 500: heat exchanger

600, 600 ': Directional valve

Claims (10)

It includes an outdoor temperature sensor 110 for measuring the outdoor temperature, an indoor temperature sensor 120 for measuring the indoor temperature, an outdoor humidity sensor 130 for measuring the outdoor humidity, and an indoor humidity sensor 140 for measuring the indoor humidity. Sensor unit 100; An air conditioner 300 circulating and cooling indoor air; An air supply / exhaust system 400 for discharging indoor air to the outside and supplying the outdoor air to the interior; A heat exchanger 500 in which heat exchange is performed between the outdoor air introduced into the room and the indoor air discharged to the outside; A control unit (200) which receives the detection signal of the sensor unit (100) and controls to select and drive any one or more of the air conditioner (300), the supply / exhaust device (400) and the heat exchange device (500); Including, When the condition detected by the sensor unit 100 is a summer condition, the air conditioner 300 is operated, in the case of a seasonal condition, the air supply and exhaust device 400 is operated, and in the case of a winter condition, the heat exchanger 500 is operated. Indoor air conditioner, characterized in that. delete The method of claim 1, The summer, summer and winter conditions are temperature conditions; Operating the air conditioner 300 when the outdoor temperature is equal to or greater than a preset first reference temperature; Operating the supply / exhaust device 400 when the outdoor temperature is lower than the first reference temperature and is equal to or greater than a preset second reference temperature; When the outdoor temperature is lower than the second reference temperature, the indoor air conditioner, characterized in that for operating the heat exchange device (500). The method of claim 1, A condition sensed by the sensor unit 100 is a summer condition; When the indoor air meets a preset ventilation condition, the indoor air conditioner, characterized in that for further operating the heat exchange device (500). The method of claim 1, The air supply / exhaust device (400) or the heat exchanger (500) is an indoor air conditioner, characterized in that the air volume of the air supply and exhaust is controlled to be automatically changed when the temperature and humidity are out of a predetermined range. The method of claim 1, The room is composed of a heat generating region in which a combustor for generating food to generate heat and a non-heating region provided with a cooking preparation mechanism for preparing the food; The air supply and exhaust device 400 is installed directly above the combustor to exhaust the heat generated by the combustor and exhaust gas that has not been exhausted through the primary exhaust part 410 and the primary exhaust part 410. An indoor air conditioner including an excess heat exhaust unit 420 and an air supply unit 430 configured to supply air downward from the ceiling to prevent heat from being diffused from the heat generating region to the non-heat generating region. . The method of claim 6, The primary exhaust unit 410 includes a plurality of exhaust hoods 413 and 413 'installed directly above the combustor, and the excess heat exhaust unit 420 is installed between the plurality of exhaust hoods 413 and 413'. The air supply unit 430 is an indoor air conditioner, characterized in that installed on the non-heating region side outside the plurality of exhaust hood (413,413 '). The method of claim 6, The plurality of combustors are disposed adjacent to each other adjacent to each other, and the air supply unit (433, 433 ') is disposed between the plurality of combustors. The method of claim 6, The heat exchanger 500 includes a common air supply pipe and an exhaust pipe common to the air supply and exhaust device 400, and the air supply pipe and the exhaust pipe are connected to the air supply and exhaust device 400 and the heat exchanger by a direction switching valve 600, 600 ′. Indoor air conditioner, characterized in that the passage is connected to any one of (500). The method of claim 6, Indoor air conditioner characterized in that the volume of air introduced into the room through the air supply and exhaust unit 400 and the heat exchanger 500 is 20% to 30% more volume than the amount of air discharged to the outside.

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