JP3918243B2 - Air conditioner with air purifying function - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a technique for removing particulate matter and chemical substances in indoor air while controlling indoor temperature and humidity.
[0002]
[Prior art]
Conventionally, air conditioners that perform indoor air conditioning and are also intended for air purification have been found since 1990 in air conditioners, fan heaters, and the like. By adding an air purifying function to the air conditioner, it is possible to reduce the house dust in the room and to prevent the house dust from adhering to the heat source equipment, cold heat source equipment, heat exchanger, and blower. It was useful for securing and maintenance.
[0003]
On the other hand, indoor air pollution by volatile organic compounds (VOCs) has become a hot topic due to the use of new building materials and improved airtightness of houses. The measures include improvement of building materials, improvement of construction methods, ventilation, and a reduction technique called partial bake-out.
[0004]
Traditionally, several bake-out techniques have been found in foreign literature. For example, Girman (Building bakeout Studies. Proceedings of Indoor Air'90, 5th Int. Conf. On Indoor Air Quality and Climate 1990, Vol3, p349-354) and Francis (Indoor Contaminant Emission rates Before and After a building bake-out. Proceeding of Indoor Air * 93, 6th Int. Conf. On Indoor Air Quality and Climate 1993, Vol.6, p687-691). These bakeout papers first dealt with bakeouts in commercial buildings. The contents of the bakeout are as follows. By raising the temperature of the room over a period of one to several days using the existing heating system of the building, the VOCs in the building material can be increased quickly, and the VOCs in the building material can be quickly brought into the room. It was to dissipate.
[0005]
[Problems to be solved by the invention]
However, the conventional bakeout technique as described above does not clearly define how many times the room temperature or the building material temperature is set, nor does it indicate how long it needs to be maintained. For this reason, a technology for economically and effectively baking out without affecting building materials has not yet been established. In addition, only a ventilation method has been proposed as a method for removing VOCs generated by baking out.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a first filter that is provided in the vicinity of the first suction port and mainly captures particulate matter, a second filter that mainly adsorbs chemical substances, and downstream of the two filters. A blower provided in the air, a sensor for detecting a substance sucked from the first suction port, a sensor for detecting a room temperature, an air outlet provided downstream of the blower, and an air flow rate of the blower based on information from the sensor And a control circuit for controlling the operation time, an air purifying unit, the air purifying unit, and a heat source unit or a cold source unit provided via a heat insulating means, provided on the control circuit or the heat source unit side. The control circuit controls the operation of the air purifier, the heat source or the cold heat source based on the information from the sensor. If any temperature time reaches a temperature of 50 ° C. from 25 ° C., the air conditioner operation is stopped, in which so as to perform the operation of the air cleaning unit for a certain time.
[0007]
According to the present invention, VOCs of several hundred μg to several tens of thousands μg / m ³ generated in the room by baking out by the operation of the air conditioner can be removed by the air purifier without ventilation. In addition, the combination of the position and direction of the air-conditioning blowout and air cleansing blowout enables zone control of the room temperature. In addition, the combination of the position and direction of the air-conditioning blowout and air cleanup blowout allows the indoor temperature to be controlled. Temperature zone control is possible, thus contributing to economical air conditioner operation.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The present invention includes a first filter that is provided near the suction port and mainly captures particulate matter, a second filter that mainly adsorbs chemical substances, a first blower provided downstream of the two filters, and this A control circuit that controls the air volume and operating time of the blower, and the heat source includes an inorganic rectification zone provided in the air passage, and a second blower provided downstream of the rectification zone, A control circuit or a control circuit provided on the heat source device side controls the operation of the air purifier, the heat source device, or the cold heat source device based on information from the sensor. Therefore, when baking is performed by the operation of the air conditioner, it is possible to increase the purification efficiency of the air cleaning unit by providing the first air cleaning fan, although the pressure loss increases. In addition, the rectification zone enables chemical substances and biological particles to be decomposed. As a result, VOCs generated in the room due to the synergistic effect of both can be efficiently processed in a short time.
[0009]
In the present invention, the rectification zone is located at a position where the temperature in the air passage is between 150 ° C and 700 ° C. By placing a rectifying zone at this temperature, chemical substances and biological particles can be decomposed and burned out.
[0010]
The present invention also relates to the configuration of the rectification band. The fin has a plurality of ventilation paths and a plurality of fins arranged in parallel, and the fin surface is subjected to a surface treatment such as shot blasting. As a result, a large surface area can be obtained, and chemical substances and biological particles can be efficiently decomposed and burned out.
[0011]
Further, in the present invention, when either the indoor atmosphere temperature or the building material surface temperature reaches a temperature of 25 ° C. to 50 ° C., the output value of the sensor that detects the substance sucked from the first suction port is a constant value. The air purifier is operated until it becomes below. With this configuration, the air purifier can be operated only when high-concentration VOCs are generated in the room due to an increase in the room temperature, so that VOCs can be efficiently removed. Moreover, the lifetime of the filter can be extended.
[0012]
Further, in the present invention, when either the indoor atmosphere temperature or the building material surface temperature reaches a temperature of 25 ° C. to 50 ° C., the output value of the sensor that detects the substance sucked from the first suction port is a constant value. The operation of the air purifier is performed until it becomes below, and when the room temperature is within the above value even after the operation of the air purifier, the operation of the air purifier is performed after a certain time. With this configuration, the air purifier can be operated only when the air conditioner is operated and high-concentration VOCs are generated in the room by baking, so that VOCs can be efficiently removed. In addition, when the VOCs in the room are reduced after a certain period of operation, the air cleaning operation is stopped, so that the running cost can be reduced.
[0013]
Further, in the present invention, when either the indoor atmosphere temperature or the building material surface temperature reaches a temperature of 25 ° C. to 50 ° C., the output value of the sensor that detects the substance sucked from the first suction port is a constant value. The operation of the air purifier is performed until it becomes below, and when the room temperature is within the above value even after the operation of the air purifier, the operation of the air purifier decreases the air volume of the first blower. With this configuration, VOCs can be efficiently removed.
[0014]
In the present invention, when the air conditioner and the air purifier are operated at the same time, if the air conditioning capacity of the air conditioner main body of the air conditioner is decreased, the operation of the air cleaner is also decreased. Is. Only when high-concentration VOCs are generated in the room by operating the air conditioner and baking out, the air purifier can be operated, so that VOCs can be efficiently removed.
[0015]
Moreover, this invention controls the said air purifying part, the said heat source machine, or the said cooling-heat source based on the action | operation of the bakeout switch provided in the air conditioner main body or the air purifying part. As a result, only baking out can be performed.
[0016]
Further, the present invention is based on the operation of the bakeout switch, forcibly for a certain period of time, based on the operation of the bakeout switch provided in the air conditioner body or the air purifier of the air conditioner, The cold heat source is operated and controlled so that the capacity is maximized. As a result, baking can be effectively performed.
[0017]
In addition, the present invention forcibly operates the air conditioning capacity of the air conditioner at the maximum for a certain period of time based on the operation of the bakeout switch. To reduce the air conditioning capacity of the air conditioner. As a result, baking can be performed safely without adversely affecting the building materials.
[0018]
In the present invention, after the air conditioning capacity of the air conditioner is forcibly performed for a certain time at the maximum, the air purifier is operated at the maximum capacity. As a result, VOCs generated in the room can be efficiently processed in a short time.
[0019]
In the present invention, after the air conditioning capacity of the air conditioner is forcibly performed at a maximum for a certain period of time, the control for operating the air cleaning unit at the maximum capacity is cyclically performed. As a result, VOCs can be efficiently removed.
[0020]
【Example】
An embodiment of the present invention will be described below with reference to FIG.
[0021]
Example 1
1 is a longitudinal sectional view showing an air conditioner with an air cleaning function according to a first embodiment of the present invention. Reference numeral 1 denotes a first suction port. A charging filter 2 is provided immediately after the suction port 1 to remove particulate matter. It is processed into a pleated shape to suppress pressure loss and increase the contact area. Reference numeral 3 denotes a filter composed of activated carbon and a metal complex as a gaseous substance such as a chemical substance, and is provided downstream of the charging filter 2. 4 is a sirocco type blower. Since the charging filter 2 is processed into a pleated shape, the blower may be a cross flow type. Reference numeral 5 denotes a sensor that detects a particulate matter including a light emitting element and a light receiving element. The sensor 5 is provided above the charging filter, but it is not necessary to be at this position unless it is immediately after or downstream of the charging filter 2. 6 is a 1st blower outlet. As described above, the first air inlet 1 to the first air outlet 6 are the basic components for air purification. Hereinafter, these are referred to as an air purifying unit 7.
[0022]
Reference numeral 8 denotes a concentration display portion of the particulate matter detected by the sensor 5. The display position is the upper part of the air cleaning unit 7. The display method may be digital or analog. The material of the casing of the air cleaning unit 7 is based on resin.
[0023]
Reference numeral 9 denotes an air cleaning and air conditioner control circuit. Based on the output from the sensor 5, the operation of the air cleaning unit 7 and the air conditioner body 10 is controlled, and the concentration display unit 8 is controlled.
[0024]
On the other hand, 10 is an air conditioner body. The casing of the main body 10 uses metal. The air cleaning unit 6 is provided in the upper part of the air conditioner 10. Here, a gas fan heater is used as an air conditioner. Of course, an electric fan heater or an oil fan heater may be used. Reference numeral 11 denotes a second suction port which is an air intake port of the gas fan heater. Reference numeral 12 denotes a second charging filter or an electrostatic dust collecting unit. The charging filter 12 has a configuration in which the pressure loss is extremely smaller than that of the charging filter 2 described above. Further, a part of the charging filter 12 portion corresponding to the upper portion of the second suction port 11 is cut away. 13 is a gas combustion apparatus. The gas combustion equipment has low NOx and low hydrocarbon countermeasures.
[0025]
Reference numeral 14 denotes a thermal reactor in which a transition metal is used as a base material and zeolite is supported on the surface. It is provided in an air passage through which hot air generated from the gas combustion device 13 passes. The position is a position where the flame of the gas combustion device 13 does not extend as the oxygen concentration decreases or the second suction port 11 is closed. The surface of the thermal reactor 14 may be treated with shot brass or the like. Reference numeral 15 denotes a cross flow type blower. 16 is a 2nd blower outlet. Reference numeral 17 denotes a heat insulating material that separates the air cleaning unit 7 and the air conditioner main body 10. Reference numeral 18 denotes an electric dust collector provided between the first suction port and the first filter. Reference numeral 19 denotes an air passage. Reference numeral 20 denotes a temperature sensor that detects the room temperature.
[0026]
The operation will be described based on the above configuration. When the air conditioner body 10 starts the heating operation and the room temperature or the building material surface temperature becomes 25 ° C. or higher, the VOCs and formaldehyde contained in the building material volatilize and come out into the room. When the temperature rises by 10 ° C., the indoor concentration becomes almost twice the initial concentration. Here, when the indoor temperature is detected by the temperature sensor 20 and exceeds 25 ° C. and a predetermined time has passed, the control circuit 9 operates the air purifier 7. When the operation of the air cleaning unit 7 is started, a part of the room air passes through the first suction port 1 and passes through the charging filter 2. At this time, the particulate matter is removed by the charging filter 2. Next, the minute amount of chemical substance is adsorbed by the filter 3 to the air containing the minute amount of chemical substance. Volatile organic compounds (VOC) and formaldehyde are adsorbed by activated carbon. NOx is adsorbed by metal complexes. The air thus purified is returned to the room through the first outlet 6. The air purifier 7 that has been operated for a certain period of time stops operating.
[0027]
Next, the operation of the air conditioner body 10 will be described. Along with the operation of the blower 15, the gas combustion device 13 also starts to operate. A part of the indoor air passes through the charging filter 12 from the second suction port 11, and after the particulate matter is removed, it becomes warm air in the gas combustion device 13. On the other hand, the thermal reactor 14 is heated to 400 to 650 ° C. by this hot air and heat transfer from the gas combustion device 13. Fungi and general bacteria passing through the thermal reactor 14 disappear here. VOC and formaldehyde take oxygen from NOx on the transition metal and are oxidized to carbon dioxide and water vapor. NOx reduces NO2 to NO. Thus, the particulate matter and the chemical substance are removed by the charging filter 11 and the thermal reactor 14, and the biological particles disappear.
[0028]
As described above, formaldehyde and VOCs generated in the room from building materials and the like by the heating operation of the air conditioner 10 are removed by the air cleaning unit 7. If this process is performed in a newly-built house or a newly-built house, formaldehyde and VOCs contained in building materials can be expelled in a short period of time.
[0029]
【The invention's effect】
As is clear from the above description, the air cleaner with an air cleaning function of the present invention has the following effects.
[0030]
It consists of an air cleaning unit and a heat source unit or a cold heat source unit provided via a heat insulating means, the air cleaning unit being provided in the vicinity of the first suction port, mainly a first filter for capturing particulate matter, A second filter mainly for adsorbing chemical substances, a first blower provided downstream of the two filters, a sensor for detecting a substance sucked from the first suction port, and a temperature sensor for detecting a room temperature, A control circuit that controls the air volume and operating time of the blower based on information from the air outlet and the sensor provided downstream of the blower, and the heat source machine is provided with an inorganic rectification zone and a rectification zone provided in the air passage And a second blower provided downstream of the air cleaner, and the air purifier, the heat source machine, or the cold heat source controls the operation based on information from the sensor. Formaldehyde · VOCs generated in Luo chamber can be expelled formaldehyde and VOCs contained in removing air purifying unit building materials in a short period of time.
[0031]
In addition, the first filter is provided upstream of the second filter, and the first suction port is located above the heat source or the cold heat source and is provided on the front surface or side surface of the air conditioner body. Therefore, indoor air can be sucked from the front or side surface, and indoor air can be taken in more efficiently than when a suction port is provided on the back. In addition, when only the operation of the heat source unit is stopped, it is preferable in terms of safety that the air purifying unit is in front because waste heat of the heat source unit does not enter the suction port.
[0032]
Also, when either the air temperature of the room or the building material surface temperature reaches 25 ° C to 50 ° C due to the operation of the air conditioner, the operation of the air cleaning unit is started and the air conditioner is operated for a certain period of time. Thus, only when high-concentration VOCs are generated in the room by baking, the air cleaning unit can be operated and VOCs can be efficiently removed.
[0033]
In addition, when the VOCs in the room are reduced after a certain period of operation, the air cleaning operation is stopped, so that the running cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an air conditioner with an air cleaning function according to a first embodiment of the present invention.
DESCRIPTION OF SYMBOLS 1 1st suction inlet 2 1st filter 3 2nd filter 4 1st air blower 7 Air cleaning part 9 Control circuit 11 2nd suction inlet 12 3rd filter 13 Gas combustion apparatus 14 Thermal reactor 15 2nd Blower 21 Temperature sensor

Claims (4)

The air purifying unit and a heat source device or a cold heat source device provided via a heat insulating means, the air purifying unit being provided in the vicinity of the first suction port and mainly capturing particulate matter. When, a second filter which mainly adsorbs chemical substances, a first fan provided downstream of the two filters, a sensor for detecting a substance to be sucked from said first inlet port, a chamber temperature comprising a temperature sensor for detecting a blow-out port provided downstream of the first blower, and a control circuit for controlling the air volume and operating time of the first fan based on the information from the previous SL sensors, the thermal The original machine includes a rectification zone made of an inorganic material provided in the air passage, and a second blower provided downstream of the rectification zone, and the air conditioner body or the air purifier is provided with the temperature sensor. Independent of the information Air cleaning function the air conditioner provided with a bake-out switch to perform at the highest air-conditioning capacity of the fixed time forcing the air conditioner. Based on the operation of the bakeout switch, the air conditioning capacity of the air conditioner is forcibly operated for a certain period of time. If the room temperature exceeds 50 ° C, the air purifier is operated for a certain period of time. The air conditioner with an air purifying function according to claim 1 , wherein the air conditioning capacity is reduced. Constant after time forcibly perform air conditioning capability of the air conditioner at the maximum, air cleaning function the air conditioner according to claim 1, wherein to perform the operation of the air cleaning unit at maximum capacity. Constant after time forcibly perform air conditioning capability of the air conditioner at the maximum, air cleaning function the air conditioner according to claim 1, wherein to perform control to operate the air cleaning unit at maximum capacity cyclically.

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