JP4234164B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner including a ventilator that supplies outside air into a room and discharges room air to the outside.

In general, there are ventilation devices of only supply air, exhaust only, and simultaneous supply and exhaust. The supply only or the exhaust only has only one of supply and exhaust, and the application is limited.
In addition, since both the air supply and the exhaust use two blowers, the configuration is complicated and the apparatus becomes large.
As an air conditioner equipped with a ventilation device for supplying and exhausting air using two of these blowers, there is one disclosed in, for example, Japanese Patent Application Laid-Open No. 10-47736. Although the specific configuration of the air conditioner is not clearly described in this, ventilation by air supply / exhaust that incorporates outdoor units, indoor units, and heat exchangers and suppresses fluctuations in the state quantity of the room is performed. An air conditioner having a heat exchanging ventilator capable of performing the above is disclosed.
Japanese Patent Laid-Open No. 10-47736 Japanese Patent Laid-Open No. 4-73531 Japanese Patent Laid-Open No. 10-73282 JP-A-1-300130 JP-A-10-274425 Japanese Utility Model Publication No. 61-75859 JP-A-2-287031 JP 11-37491 A Japanese Patent Laid-Open No. 10-103743 Japanese Patent Laid-Open No. 10-311590

However, as already described, the ventilation device for simultaneous supply and exhaust using two blowers has a problem that the configuration is complicated and the device becomes large.
If a ventilation device for simultaneous supply and exhaust using two such blowers is simply incorporated into an air conditioner, the air conditioner becomes complicated and large, and two air conditioner and ventilator devices are used. There was a problem that a wall hole for the air conditioner was necessary and the installation work was complicated.

  The present invention has been made to solve such problems, and an air conditioner equipped with a refrigeration cycle is provided with a ventilation fan capable of switching between supply and exhaust and means for detecting the indoor and outdoor environments. Based on the detection results, air supply or exhaust is efficiently performed to supply fresh outdoor air to reduce indoor polluted air.Furthermore, use of outdoor air cooling, exhaust heat of piping, etc. The purpose is to achieve energy saving with simple structure and low cost.

  An air conditioner according to the present invention includes an air conditioner main body having an indoor unit and an outdoor unit, and switching between supply of outdoor air and exhaust of indoor air driven by a single electric motor provided in the main body. A ventilating fan that can be connected to one end of the ventilating passage of this ventilating fan and connected to the refrigerant pipe of the refrigeration cycle through a wall hole provided in the wall of the room where the air conditioner is installed Provided in the ventilation duct of the ventilation fan, and an environment detection means for detecting condensation, and the environment detection means is provided during the air supply operation of the ventilation fan during the heating operation by the main body. When detected, the ventilation fan performs the exhaust operation.

  The air conditioner which concerns on this invention can suppress the dew condensation at the time of heating operation by the said structure.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
1 to 3 are diagrams showing Embodiment 1, FIG. 1 is an exploded perspective view of a ventilation fan, FIG. 2 is a perspective view of an indoor unit of an air conditioner equipped with a ventilation fan, and FIG. It is sectional drawing of the air blower part for ventilation.
In FIG. 1, 1 is a ventilation fan, 2 is a motor called a motor that drives a fan 5 in which a plurality of blades 3 are erected on both end surfaces of the main plate 4, 6 is an output shaft of the motor 2, and 7 is an output. A fixing nut for fixing the fan 5 to the shaft 6, 8 has an annular ventilation path 9, a casing for housing the fan 5, and 10 an exhaust operation of the ventilation blower 1 opened at the start end of the ventilation path 9 of the casing 8 Air supply port (exhaust port during air supply operation), 11 is an exhaust port during exhaust operation (air supply port during air supply operation) opened at the end, and 12 is a motor cover for fixing the motor 2 to the casing 8. , 13 is a filter provided in the middle of the ventilation path 9, and 14 is an environmental sensor used as an environment detection means for detecting the environment such as indoor and outdoor temperature, humidity, and air pollution degree.

  An example in which the ventilation fan 1 is incorporated in a separate air conditioner is shown in FIGS. In this example, the air blower 1 is attached to the side of the indoor unit of the air conditioner so that the axial direction of the ventilation fan 1 is the longitudinal direction of the indoor unit 15. Further, the air supply port 10 during the exhaust operation is located at the lower front portion of the indoor unit 15, and the exhaust port 11 during the exhaust operation is located at the lower rear portion of the indoor unit 15. A ventilation duct 21 is connected to the exhaust port 11.

In FIG. 3, reference numeral 20 denotes an electric shutter that can be automatically opened and closed, which is an example of an air blocking member provided in the vicinity of the filter 13 of the ventilation fan 1, 21 is a ventilation duct, 22 is a refrigerant pipe of a refrigeration cycle, 23 is a drain hose, and 24 is a sleeve attached to a wall hole for installation of the air conditioner.
Note that the air blocking member is not limited to the shutter 20 and may be any member as long as it blocks communication between air inside and outside the room.

  In the examples of FIGS. 2 and 3, the ventilation fan 1 is provided in the indoor unit of the air conditioner. However, the present invention is not limited to this, and the ventilation fan 1 is provided in the outdoor unit of the air conditioner. May be.

The fan 5 is composed of a vortex fan, and a plurality of blades 3 are erected on both end surfaces of the main plate 4 to form a thin fan.
During the indoor air exhaust operation, the fan 5 rotates by driving the motor 2, indoor air is supplied from the air supply port 10 and introduced into the ventilation path 9 of the casing 8, and ventilation between the blade 3 of the fan 5 and the ventilation is performed. The pressure is gradually increased by the passage 9 and discharged from the exhaust port 11 to the ventilation duct 21.

  The air conditioner according to the present embodiment performs air conditioning control in accordance with the environmental state detected by the environmental sensor 14 provided in the middle of the ventilation path 9 of the ventilation fan 1.

  An environmental sensor 14 provided in the middle of the ventilation path 9 of the ventilation blower 1 is a sensor that detects the environment such as indoor and outdoor temperature, humidity or condensation, miscellaneous gas, CO2 gas, and the like.

When the environmental sensor 14 is a temperature sensor, the temperature outside the room can be detected by providing the temperature sensor that detects the temperature outside the room in the middle of the air passage 9.
For example, when the outside air temperature falls below the room temperature during cooling, the operation of the ventilation fan 1 is switched to supply air to perform the energy saving operation. When the room temperature approaches the set temperature, the cooling operation is stopped and only the air supply operation of the ventilation fan 1 is switched to prevent the room from being overcooled.

  When going out, only the ventilation fan 1 with low power consumption is operated without performing the cooling operation using the refrigeration cycle. In that case, the ventilation fan 1 is exhausted when the outside air temperature is high during the daytime, and when the outside air temperature decreases in the evening, the ventilation fan 1 is automatically switched to the air supply operation, so that the operation is performed to some extent by the operation of the ventilation fan 1 alone. It is possible to suppress the rise in room temperature.

  Next, a case where a humidity sensor that detects indoor and outdoor humidity is provided as the environmental sensor 14 will be described. By providing a humidity sensor that detects indoor and outdoor humidity, for example, when the indoor humidity becomes 60% or more, the ventilation fan 1 is automatically set in the exhaust operation to exhaust indoor air to the outside. Further, when the outdoor humidity is 60% or more, the ventilation fan 1 is automatically ventilated, and the shutter 20 is closed to block the indoor and outdoor air flow.

  Further, a dew condensation sensor may be provided as the environmental sensor 14 instead of the humidity sensor. By using the dew condensation sensor, the dew condensation sensor detects when condensation is likely to occur during the air supply operation of the ventilation fan 1, especially in winter, and the exhaust fan 1 is automatically exhausted, and the ventilation duct 21 is exposed to dew. Can be suppressed. The dew condensation sensor is attached to the outside of the ventilation duct 21 in order to detect dew condensation outside the ventilation duct 21.

  Moreover, you may provide the miscellaneous gas sensor which detects the indoor and outdoor miscellaneous gas, especially the cigarette smoke in the middle of the ventilation path 9 of the ventilation fan 1 as the environmental sensor 14. By providing the miscellaneous gas sensor, when the cigarette smoke is detected, the ventilation fan 1 is automatically exhausted.

  This miscellaneous gas sensor also detects indoor and outdoor pollutants such as volatile organic compounds (VOC) generated from city gas, alcohol, gasoline, CO, building materials, and exhaust gas from vehicles (NOX) in addition to cigarette smoke. However, pollen, CO2, oil smoke, odor, sand and cotton dust are generally not detected.

The environmental sensor 14 may be a CO2 sensor that is a main indoor pollutant. The CO2 sensor detects the concentration of CO2 gas exhausted by human breathing. For example, when the indoor CO2 concentration becomes 1500 PPM or more, the ventilation fan 1 automatically performs an exhaust operation.
However, a general CO2 sensor does not change only with respect to the CO2 gas concentration, but is generally affected by disturbances such as temperature or humidity, and the resistance value fluctuates up and down over time. .

  Sensors that detect pollen, oil smoke, odors, sand, cotton dust, and other gases that are not detected by miscellaneous gas sensors and CO2 sensors. For example, dust sensors optically detect house dust (including allergens) and tobacco smoke that floats indoors and outdoors. Alternatively, a sensor that automatically detects light, that is, a sensor that detects the amount of light reflected by the particles may be used.

  The above-described sensors are described only for sensors having one function, but a plurality of sensors or a sensor in which a plurality of functions are combined may be provided. By using a plurality of sensors or a sensor in which a plurality of functions are combined, the air conditioner can be controlled based on a plurality of indoor and outdoor environmental information such as humidity and miscellaneous gas, for example, instead of detecting only temperature.

In addition, the air conditioner having a ventilation function according to the present embodiment includes a ventilation duct 21, a refrigerant pipe 22 of a refrigeration cycle, a drain hose 23, and electrical wiring (not shown) in one wall hole. Since all can be stored, it is excellent in recyclability when the air conditioner is discarded.
Further, since the sensors are installed in the ventilation duct 21, only one sensor is required for each indoor and outdoor, so that in this respect, the recyclability is excellent.

  An air conditioner according to an embodiment of the present invention is driven by an air conditioner main body having an indoor unit and an outdoor unit, and an electric motor provided in the main body and capable of switching between normal rotation and reverse rotation. Thus, a ventilation fan capable of switching between supply of outdoor air and exhaust of indoor air in one ventilation path is connected to one open end of the ventilation path of the ventilation fan, and refrigerant pipes for the refrigeration cycle, etc. In addition, a ventilation duct that is passed through a wall hole provided in a wall of a room in which the air conditioner is installed, and an environment detection unit that detects the indoor and outdoor environments.

  Moreover, the ventilation fan is provided in the indoor unit.

  Moreover, the ventilation fan is provided in the outdoor unit.

  One wall hole is provided.

  Further, the environment detection means is provided in the ventilation path or ventilation duct of the ventilation fan.

  Moreover, the environment detection means is provided in at least one of the indoor unit and the outdoor unit.

  Moreover, the environment detection means is provided in the ventilation path or ventilation duct of the ventilation fan and the indoor unit or the outdoor unit.

  Further, the environment detection means is constituted by a temperature sensor that detects the temperature of the air inside or outside the room.

  Also, during the cooling operation of the air conditioner, when the outdoor temperature detected by the temperature sensor falls below the indoor temperature, the ventilation fan is switched to supply air, and when the indoor temperature approaches the set value, the cooling operation by the refrigeration cycle is stopped. In addition, the control means for only the air supply operation of the ventilation fan is provided.

  Control means for operating only the ventilation fan when going out in a season where indoor cooling is required, and performing exhaust operation when the outside air temperature is higher than a predetermined value, and air supply operation when the outside air temperature is lower than the predetermined value It is equipped with.

  Further, the environment detecting means is constituted by a dew condensation sensor for detecting dew condensation.

  Further, the environment detecting means is constituted by a humidity sensor for detecting the humidity inside or outside the room.

  In addition, a humidity sensor is provided in the ventilation duct, and the ventilation fan is exhausted and the room air is exhausted to the outside according to the humidity value detected by the humidity sensor, or the ventilation fan is stopped and the ventilation fan is stopped. The control means which interrupts | blocks communication indoors and outdoors by the air blocking member provided in the air blower for ventilation or the duct for ventilation is provided.

  Further, the environment detection means is constituted by a miscellaneous gas sensor for detecting miscellaneous gases such as cigarettes.

  Further, the environment detection means is constituted by a CO2 sensor for detecting CO2.

  Further, the environment detection means is constituted by a dust sensor for detecting dust or the like.

  Further, the environment detection means is constituted by a plurality of sensors or a sensor in which a plurality of functions are combined.

  Further, a filter for air purification or deodorization is provided on the ventilation path or ventilation duct of the ventilation fan.

  The air conditioner according to the embodiment of the present invention is driven by a single electric motor capable of switching between normal rotation and reverse rotation, thereby switching between supply of outdoor air and exhaust of indoor air in one ventilation path. Because the ventilation fan that can be used is small, the air conditioner can be provided with a compact ventilation function without being increased in size even if the ventilation fan is incorporated, and it can be quickly provided by providing an environmental detection means. It is possible to switch between supply and exhaust of a simple ventilation fan, power saving, and suppression of indoor air contamination.

  Further, the ventilation fan can be attached to either the indoor unit or the outdoor unit, whichever is convenient.

  In addition, since the ventilation duct of the ventilation fan can be integrated into one, the ventilation duct and the refrigerant piping of the air conditioner can be passed through one wall hole, and there is no need to open another wall hole. The installation of the air conditioner with ventilation function is improved.

  Moreover, since the environment detection means is provided in the ventilation path or ventilation duct of the ventilation fan, the environment outside the room can be detected by one environment detection means.

  Also, during cooling operation, if the outdoor temperature falls below the room temperature, switch the ventilation fan operation to supply air.If the indoor temperature approaches the set value, the cooling operation by the refrigeration cycle is stopped and only the ventilation fan supply operation By doing so, power saving can be achieved.

  Also, when going out in a season where indoor cooling is required, only the ventilation fan is operated, and when the outside air temperature is higher than the predetermined value, the exhaust operation is performed, and when the outside air temperature is lower than the predetermined value, the air supply operation is performed. , Automatically suppress the rise in indoor temperature.

  In addition, a humidity sensor is provided in the ventilation duct, and the ventilation fan is exhausted and the room air is exhausted to the outside according to the humidity value detected by the humidity sensor, or the ventilation fan is stopped and the ventilation fan is stopped. Since the indoor and outdoor communication is blocked by the air blocking member provided in the air blower or the ventilation duct, the indoor humidity can be set to a predetermined value or less, and a comfortable living space can be obtained.

  Further, by providing a miscellaneous gas sensor for detecting miscellaneous gases such as cigarettes in the ventilation path or ventilation duct of the ventilation fan, it is possible to detect pollutants such as cigarettes and automatically perform an exhaust operation.

  Further, by providing a CO2 sensor for detecting CO2 in the ventilation path or ventilation duct of the ventilation fan, the indoor CO2 concentration can be reduced.

  Further, by configuring the environment detection means with a plurality of sensors or a sensor that combines a plurality of functions, for example, instead of detecting only the temperature, the air conditioner is based on a plurality of environmental information such as humidity and other gases inside and outside the room. Can be controlled.

  Moreover, if a plurality of ventilation ducts for the ventilation fan are provided and filters such as an air cleaning filter and a deodorizing filter are installed in the ventilation duct, the noise of the air conditioner can be kept low.

Embodiment 2. FIG.
FIG. 4 is a diagram showing the second embodiment, and is a perspective view showing a state where the indoor unit of the air conditioner is installed in a room. In the figure, 16 is an indoor unit of an air conditioner having a ventilation function and a dehumidifying function, 17 is a ventilation duct for exchanging indoor and outdoor air, a refrigerant pipe including a liquid pipe and a gas pipe, a drain hose, and an electrical wiring A pipe processing section 18 that is tape-finished so as to be integrated with each other is a wall hole dedicated to an air conditioner, which is a first wall hole for bringing the pipe processing section 17 out of the room.

  In FIG. 1 in the first embodiment, the environment sensor 14 is controlled only by ventilation using a humidity sensor. However, this embodiment can perform not only ventilation but also ventilation and dehumidification at the same time. By performing ventilation and dehumidification at the same time, dehumidification can be performed faster than with ventilation alone.

  In the first embodiment, the environmental sensor 14 is provided in the ventilation duct 21, but this sensor may be provided in the indoor unit 16. When this sensor is, for example, a humidity sensor, the exhaust fan 1 is automatically exhausted when the indoor humidity detected by the humidity sensor of the indoor unit 16 becomes 60% or more.

  Further, the environmental sensor 14 may be provided not in the indoor unit 16 but in an outdoor unit (not shown). When this sensor is, for example, a humidity sensor, when the outdoor humidity becomes 60% or more, the ventilation operation by the ventilation fan 1 is automatically stopped, and the shutter 20 is closed to block the indoor and outdoor air flow.

  Further, both the indoor unit 16 and the outdoor unit may have the environmental sensor 14, or the combination of the environmental sensor 14 of the ventilation duct 21, the environmental sensor 14 of the indoor unit 16, or the environmental sensor 14 of the outdoor unit with air. You may control a harmony machine.

  In the air conditioning according to the embodiment of the present invention, the main body has a dehumidifying function, the humidity sensor is provided in the ventilation duct, and the dehumidifying operation by the main body and the ventilation fan are performed according to the indoor and outdoor humidity values detected by the humidity sensor. Or a control means for shutting off indoor / outdoor communication by an air shut-off member provided on the ventilation fan or the ventilation duct by simultaneously performing the exhausting operation by the engine or stopping the dehumidifying operation and the ventilation fan by the main body. It is provided.

  In the air conditioning according to the embodiment of the present invention, the main body has a dehumidifying function, the humidity sensor is provided in the ventilation duct, and the dehumidifying operation by the main body and the ventilation fan are performed according to the indoor and outdoor humidity values detected by the humidity sensor. The exhaust operation is performed at the same time, or the dehumidification operation by the main body and the operation of the ventilation fan are stopped, and the indoor and outdoor communication is blocked by the air blocking member provided in the ventilation fan or the ventilation duct. It can dehumidify faster than only.

Embodiment 3 FIG.
FIG. 5 shows the third embodiment, and is a perspective view showing a state in which the indoor unit of the air conditioner is installed in a room. In the first embodiment, the ventilation duct 21 is housed in one wall hole provided when the air conditioner is installed. In the present embodiment, the first wall hole is formed as shown in FIG. In addition to the air conditioner dedicated wall hole, another second wall hole is provided, and the ventilation duct 21 is provided using the two wall holes so that the ventilation amount is doubled or more.

In FIG. 5, 25 is an air conditioner having a ventilation function, 17 is a ventilation duct for exchanging indoor and outdoor air, a refrigerant pipe including a liquid pipe and a gas pipe, a drain hose, and an electric wiring. Thus, the pipe processing section 18 finished with tape, 18 is an air conditioner wall hole, 19 is an added second wall hole, and the second wall hole 19 is also provided with a ventilation duct 21.
Specifically, for example, the ventilation duct 21 is provided in the second wall hole 19 and the other refrigerant pipes 22 and the like are provided in the air conditioner wall hole 18, or the ventilation duct 21 is branched from the middle and the main part is A method in which the second wall hole 19 is provided and the other part is provided in the air conditioner dedicated wall hole 18 together with the refrigerant pipe 22 or the like can be considered.

Although it is difficult to increase the ventilation rate with only one air conditioner wall hole 18 (for example, φ65 or φ75), if another second wall hole 19 is provided, the ventilation rate can be increased more than twice. As a result, the noise level has a margin, and even if a filter such as an air purifying filter or a deodorizing filter is installed in the ventilation duct 21, it can be suppressed to low noise.
Particularly in a large room of the LDK (living and dining kitchen) class or higher, ventilation amount and noise level are regarded as important, and those having two wall holes as in this embodiment are suitable for such use.

  The air purifying filter may be a low-pressure loss insect repellent filter, or may be an electrostatic filter, a deodorizing filter, a NOX filter that collects outdoor exhaust gas, or the like. As a result, contaminants such as dust, pollen, and NOX inside and outside the room can be removed.

  Moreover, the wall hole provided in the wall of the room when installing the air conditioner does not have to be two wall holes, and a plurality of wall holes may be used.

  The air conditioning according to the embodiment of the present invention is provided with a plurality of wall holes.

  Also, the wall hole has a first wall hole and a second wall hole, which are dedicated air conditioner wall holes, the refrigerant pipe or the like as the first wall hole, and the ventilation duct as the second wall hole or second wall hole. The first wall hole and the second wall hole are provided.

  In the air conditioning according to the embodiment of the present invention, since a plurality of ventilation ducts of the ventilation fan can be provided, the ventilation amount can be increased more than twice, and the noise level is also marginal.

It is a figure which shows Embodiment 1, and is an exploded perspective view of the air blower for ventilation. It is a figure which shows Embodiment 1, and is a perspective view of the indoor unit of the air conditioner provided with the air blower for ventilation. It is a figure which shows Embodiment 1, and is sectional drawing of the air blower part for ventilation of an indoor unit. It is a figure which shows Embodiment 2, and is a perspective view which shows the state by which the indoor unit of the air conditioner was installed in the room. It is a figure which shows Embodiment 3, and is a perspective view which shows the state by which the indoor unit of the air conditioner was installed in the room.

Explanation of symbols

  1 Blower for ventilation, 2 motor, 3 blades, 4 main plate, 5 fan, 6 output shaft, 7 fixing nut, 8 casing, 9 air passage, 10 air supply port, 11 exhaust port, 12 motor cover, 13 filter, 14 Environmental sensor, 15 indoor unit, 16 air conditioner indoor unit having ventilation function and dehumidifying function, 17 pipe processing unit, 18 air conditioner wall hole (first wall hole), 19 second wall hole.

Claims (3)

An air conditioner body having an indoor unit and an outdoor unit;
A ventilation fan provided in the main body and driven by a single electric motor and capable of switching between supply of outdoor air and exhaust of indoor air;
One opening end of the ventilation path of this ventilation blower is connected, and together with the refrigerant pipe of the refrigeration cycle, the ventilation duct passed through the wall hole provided in the wall of the room where the air conditioner is installed,
Provided in the ventilation duct of the ventilation fan, and includes an environment detection means for detecting condensation, and the environment detection means detects the air supply operation of the ventilation fan during the heating operation by the main body. The air conditioner characterized in that the ventilation fan performs an exhaust operation.   2. The air conditioner according to claim 1, wherein the environment detecting means is constituted by a temperature sensor for detecting indoor or outdoor air temperature, a humidity sensor for detecting indoor or outdoor humidity, or a dew condensation sensor. Indoor unit,
Built in this indoor unit and attached to its side so that the axial direction is the longitudinal direction of the indoor unit, and a ventilation fan having the following elements:
a) a fan in which a plurality of blades are erected on both ends of the main plate;
b) A casing for housing the fan in an annular ventilation passage having a start end and a termination end;
c) an air supply port at the time of exhaust operation which is located at the lower front of the indoor unit and opens at the start end of the ventilation path;
d) an exhaust port at the time of exhaust operation which is located at the lower back of the indoor unit and opens at the end of the ventilation path;
e) one motor that can switch between forward and reverse rotation to drive the fan;
f) Environment detection means for detecting the indoor or outdoor environment provided in the ventilation path of the casing;
g) a filter provided in the ventilation path of the casing;
h) an air blocking member provided in the vicinity of the filter;
The exhaust port of the ventilation fan at the time of exhaust operation was connected, and the refrigerant duct of the refrigeration cycle and the ventilation duct passed through the wall hole provided in the wall of the room where the air conditioner was installed Air conditioner characterized by.

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