JP2000257960A - Thermal storage type electric warm air heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an electric warm air heater having a high heating effect, maintenance-free properties and a high purifying function by radiating during the daytime a heat quantity stored in a thermal storage unit at night, simultaneously decomposing and purifying cigarette smoke or the like in a decomposing unit and supplying the air into a room. SOLUTION: Midnight power is supplied to thermal storage heaters 1, 2. Heats generated from the heaters 1, 2 are stored by thermal storage units 3, 4. The heat quantity thus stored is radiated at the daytime to heat in a room. When heating operation is started at daytime, a controller energizes an air supply means 10 and a catalytic heater 8. The means 10 sucks the air in the room from a suction port 11. The air is supplied from an air supply port 13 into the room. Then, a heat insulator 5 for forming a vent passage 5 is disposed at an outside of the units 3, 4 to prevent the heat from radiating from the units 3, 4. Thus, the air supplied from the port 13 turns into a warm air. Accordingly, the room is heated by circulation of the warm air.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a regenerative electric hot air blower in which midnight electric power is stored as heat in a heat storage body, and the heat is radiated during daytime to enhance the heating capacity. The present invention relates to a regenerative electric hot air fan for purifying indoor air.

[0002]

2. Description of the Related Art A conventional regenerative electric hot air blower is provided with an adsorbing filter carrying an adsorbing material such as activated carbon on the suction port side of a blower fan, so that smoke and odorous components of tobacco in a room are supplied to the adsorbing filter at room temperature. In general, a type in which indoor air is purified by adsorption is used.

[0003]

However, the above-mentioned conventional configuration has a problem that the adsorption capacity is not sufficient. That is, the amount of adsorption of the adsorption filter is limited, and must be disposable, which is very uneconomical.

[0004]

According to the present invention, the amount of heat stored in the nighttime heat storage unit is radiated by the air blowing means during the daytime by the heat storage heater, and is simultaneously contained in the indoor air sucked by the air blowing means. A regenerative electric hot-air heater having a high heating effect, a maintenance-free function, and a high purifying function is obtained by decomposing and purifying tobacco smoke and the like in a decomposition section and sending the air indoors.

[0005]

According to the first aspect of the present invention, the amount of heat stored in the nighttime heat storage unit is radiated by the blowing means in the daytime by the heat storage heater, and is simultaneously contained in the indoor air taken in by the blowing means. The decomposing section decomposes and purifies tobacco smoke, etc., and sends it indoors, which has a high heating effect.
The regenerative electric hot air blower is maintenance-free and has a high purification function.

According to a second aspect of the present invention, a catalyst body having a catalyst layer formed on the surface of a non-conductive metal base material is formed by a catalyst heater having a catalyst layer formed on the surface of a base material which also serves as a catalyst carrier and a heating element. The decomposition unit is configured to be heated, so that the regenerative electric hot air blower is further improved in purifying indoor air by maintenance free.

According to a third aspect of the present invention, a heat storage type electric hot air fan having a high heating effect is provided by increasing the amount of heat stored in the heat storage body by energizing the catalyst heater even at night.

According to a fourth aspect of the present invention, an expanded metal is used as a metal substrate for a catalyst heater and a catalyst body, so that the contact area with treated air is increased, the purification capacity is high, and the pressure loss is increased. And a high-efficiency regenerative electric hot air blower.

According to a fifth aspect of the present invention, there is provided a sintered oxide of aluminum and at least one selected from the group consisting of cerium, barium, lanthanum, and zirconium on the surface of the metal substrate of the catalyst heater and the catalyst body. A regenerative electric hot air blower having a high catalytic activity and a high purifying ability for treated air is provided as a configuration in which a catalyst including a catalyst and a noble metal catalyst is supported.

According to a sixth aspect of the present invention, the base of the catalyst heater is formed into a corrugated plate, and the base of the catalyst body is formed into a flat plate to constitute a decomposing section. And a regenerative electric hot air blower that can perform purification with high efficiency.

[0011]

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described. FIG. 1 is a cross-sectional view showing the configuration of the regenerative electric hot air fan of the present embodiment. The regenerative electric hot air blower of the present embodiment includes the regenerative heaters 1 and 2, the regenerators 3 and 4, the decomposing unit 7, the heat insulating material 6, and the blowing unit 10.

The heat storage heaters 1 and 2 are configured to be energized by using midnight power, and in this embodiment, a glass tube heater is used. The heat storage units 3 and 4 are arranged so as to sandwich the heat storage heaters 1 and 2 and are made of a material having a large heat storage amount such as magnesia brick in this embodiment. The decomposition unit 7 includes the heat storage body 3 and the heat storage body 4
Is provided so as to surround the heat storage heaters 1 and 2. The decomposition unit 7 includes a catalyst heater 8 and a catalyst body 9 arranged in a layer on the catalyst heater 8. In the present embodiment, the heat insulating material 6 is made of ceramic, and is arranged so as to form the ventilation path 5 around the heat storage element 3 and the heat storage element 4 and the decomposition section 7. A propeller fan used as the blower 10 is arranged in a lower part of the ventilation passage 5. In addition, a suction port 11 through which the air in the room to be blown in by the blower 10 flows in is provided in the housing that houses the respective components. Further, the blowing means 10
Vent 1 through which the air blown by the air flows out of the ventilation path 5 into the room
3 are provided. The suction port 11 is provided with a dust filter 12 for removing dust in the air.

FIG. 2 is a sectional view showing the structure of the disassembly section 7. As shown in FIG. In this embodiment, the catalyst heater 8 and the catalyst body 9 constituting the decomposing unit 7 use a material in which a catalyst is supported on a gas-permeable metal base material such as punching metal. In this embodiment, the catalyst is composed of a sintered oxide of aluminum, one or more of cerium, barium, lanthanum, or zirconium, and a noble metal catalyst, and decomposes odor components and the like. Further, in this embodiment, the catalyst body 9 is disposed so as to be downstream of the air blown by the blower 10 with respect to the catalyst heater 8. The catalyst heater 8 has a structure in which a porous metal base material is used as a resistor for the heater, and the same catalyst as the catalyst body 9 is supported on this surface. Both ends of the catalyst body 9 are held by an insulator 17 made of an insulator such as mullite. In addition, both ends of the catalyst heater 8 are connected to a terminal 14 that penetrates the insulator 17. That is, when the commercial power is supplied from the terminal 14, the catalyst heater 8 is heated and generates heat.

The operation of this embodiment will be described below. When a switch (not shown) is turned on, the regenerative electric hot air blower of this embodiment starts operating. That is, late-night power is supplied to the heat storage heater 1 and the heat storage heater 2 by a control device (not shown). Heat generated by the heat storage heater 1 and the heat storage heater 2 is stored by the heat storage body 3 and the heat storage body 4.
The room is heated by dissipating the sufficient amount of stored heat during the daytime. When the heating operation is started in the daytime in accordance with a user's instruction, the control device energizes the blower 10 and the catalyst heater 8. The air blower 10 draws indoor air from the air inlet 11, and blows the air into the room from the air outlet 13 through the air passage 5. At this time, as described above, the heat storage body 3 and the heat storage body 4 store a sufficient amount of heat. Further, a heat insulating material 6 forming a ventilation path 5 is arranged outside the heat storage elements 3 and 4 to prevent heat radiation from the heat storage elements 3 and 4. For this reason, the air blown from the blowing port 13 is hot air. Therefore, the room in which the regenerative electric hot air heater is installed is heated by the circulation of the hot air. At this time, according to the present embodiment, the catalyst heater 8 is energized, and the catalyst body 9 is activated.
Accordingly, tobacco smoke and odor components generated from cooked foods and the like contained in the air taken in from the room by the blowing means 10 are decomposed by the catalyst 9. At this time, since the decomposition performance of the catalyst body 9 can be maintained in the initial state for a long period of time, it can be used without any maintenance.

As described above, according to this embodiment, the heat storage body 3
, 4, heat storage heaters 1 and 2 for heating the heat storage bodies 3 and 4, and a decomposition unit 7 provided downstream of the heat storage heaters 1 and 2.
A heat insulating material 6 provided on the outer peripheral side of the heat storage bodies 3 and 4, the heat storage heaters 1 and 2, and the
And the air blowing means 10 provided in the ventilation path 5, the amount of heat stored in the night heat storage units 3 and 4 is radiated by the air blowing means 10 during the daytime, and at the same time, into the indoor air sucked by the air blowing means 10. Decomposition of tobacco smoke and the like
So that it can be decomposed and purified and blown indoors. It is intended to realize a regenerative electric hot air fan having a high heating effect, a maintenance-free function, and a high purification function.

If the catalyst heater 8 is energized at night at this time, the amount of heat stored in the heat storage bodies 3 and 4 can be increased to the limit, and a regenerative electric hot air fan with a high heating effect can be obtained. Is realized.

Embodiment 2 Next, a second embodiment of the present invention will be described. FIG. 3 is a cross-sectional view showing the configuration of the disassembly section 7 used in the regenerative electric hot air blower of the present embodiment. In this embodiment, the catalyst heater 8 has a structure in which a catalyst is directly supported on a base material 15a made of expanded metal to form a catalyst layer 16. The base material 15a functions as a resistor and generates heat when a commercial AC power is supplied from terminals 14 provided at both ends. At this time, the base material 15
Since expanded metal is used as a, the catalyst heater 8 can be configured to have a small heat capacity. Therefore, the catalyst heater 8 has a very short time until the catalyst layer 16 is activated. Further, since the catalyst layer 16 is provided directly on the expanded metal used as the base material 15a, heat generated by the expanded metal is directly transmitted to the catalyst layer 16, and until the catalyst is further activated. Time is shortened. Reference numeral 9 denotes the catalyst body described in the first embodiment, in which a catalyst is directly supported on a base material 15b made of expanded metal to form a catalyst layer 16.

The operation of the embodiment will be described below. The expanded metal constituting the metal substrate 15a of the catalyst heater 8 is capable of freely adjusting the resistance value by changing at least one of the thickness, width, length, and step width of the substrate. Is possible. In this embodiment, the base material 15a whose resistance value is adjusted in this way is used, and the catalyst heater 8 having the catalyst layer 16 formed on the surface thereof is used.
Is what you use. The catalyst body 9 also has a configuration using a metal base material 15b using a similar expanded metal. Since the expanded metal is used as the base material 15a as described above,
The catalyst heater 8 can be configured to have a small heat capacity.
Therefore, the catalyst heater 8 has a very short time until the catalyst layer 16 is activated. In addition, since the expanded metal is used as the metal bases 15a and 15b of the catalyst heater and the catalyst body, the contact area between the catalyst and the air is increased and the purification ability is increased. In addition, a high-efficiency regenerative electric hot air blower with low pressure loss is used. Further, since the catalyst layer 16 is provided directly on the expanded metal used as the base material 15a,
The heat generated by the expanded metal is directly transmitted to the catalyst layer 16, and the time until the catalyst is activated is further reduced. Since expanded metal is used as the metal base material 15a and the metal base material 15b, the air blow by the air blowing means 10 described in the first embodiment flows with a very low pressure loss.

As described above, according to the present embodiment, the disassembling unit 7
Is used as a porous metal substrate 15 which also serves as a catalyst carrier and a heating element.
a catalyst heater 8 formed by forming a catalyst layer 16 on the surface of
And a catalyst body 9 formed by forming a catalyst layer 16 on the surface of a non-conductive porous metal base material 15b to provide a regenerative electric hot air blower that further improves indoor air purification performance with maintenance free. It will be realized.

At this time, when the base of the catalyst heater 8 is formed into a corrugated plate and the base of the catalyst body 9 is formed into a flat plate to constitute the decomposing section 7, the contact between the processing air and the catalyst is made over a wide area. The present invention realizes a regenerative electric hot air blower that can be performed and can perform purification with high efficiency.

(Embodiment 3) Next, a third embodiment of the present invention will be described. The configuration of the present embodiment is common to FIG. 3 illustrating the second embodiment. In the present embodiment, the catalyst heater 8 and the catalyst body 9 are made of the metal base material 15a or the metal base material 1a.
5b, a catalyst containing a sintered oxide of aluminum, at least one selected from the group consisting of cerium, barium, lanthanum, and zirconium, and a noble metal catalyst is supported.

The sintered oxide is prepared as follows. After mixing 720 parts by weight of aluminum hydroxide, 217 parts by weight of cerium nitrate hexahydrate, 38 parts by weight of barium carbonate, and 1520 parts by weight of ion-exchanged water,
It is dried at 00 ° C., continuously sintered at 1000 ° C. for 60 minutes, and then pulverized after being naturally cooled. Thus, a sintered oxide of aluminum and cerium is obtained. In this embodiment, the adjustment of the sintered oxide of aluminum and cerium has been described, but the sintered oxide of barium, lanthanum, or zirconium can be similarly adjusted.

Next, 400 parts by weight of the sintered oxide thus obtained, 50 parts by weight of aluminum nitrate nonahydrate, 80 parts by weight of colloidal alumina, and a 4.5% by weight aqueous solution of dinitrodiamineplatinum nitric acid. 68 parts by weight, 136 parts by weight of a 4.5% aqueous dinitrodiammine palladium solution,
256 parts by weight of ion-exchanged water was pulverized with a 2 liter ball mill for 5 hours, the viscosity was measured to be 0.1 Pa · s / 25 ° C. using a B-type rotational viscometer (manufactured by Tokyo Keiki), and the average particle size distribution was 4.1. A catalyst slurry of micron (measured by a particle size measuring device manufactured by Shimadzu Corporation) is obtained.

The catalyst slurry thus obtained is coated with 3.5 g on the expanded metal base material 15a, dried at 130 ° C. for 20 minutes, and calcined at 600 ° C. for 20 minutes to produce a catalyst heater 8. .

The catalyst layer 9 is formed on the catalyst body 9 in the same manner as the catalyst heater 8.

The catalyst heater 8 and the catalyst body 9 prepared as described above have a high catalytic activity, that is, the catalytic action is actively performed even when the catalyst temperature is low. ing. Further, it is possible to provide an economical regenerative electric hot air blower having heat resistance and durability.

The results of an experiment verifying the effect of the present embodiment will be described below. The samples used in the experiment used the catalyst heater having the above-described configuration and the catalyst heater using only alumina. The catalytic activity is evaluated by measuring the gas concentration of the air discharged from the measuring device in each of the samples in the same concentration of the measurement gas. In this experiment, a gas having an acetic acid concentration of 10 ppm was used as the measurement gas. The measurement measures the inlet concentration and the outlet concentration by gas chromatography,
The purification rate is calculated from this difference. The results of this experiment are shown in (Table 1).

[0028]

[Table 1]

[0029]

According to the first aspect of the present invention, there is provided a heat storage unit,
A heat storage heater for heating the heat storage body, a disassembly section provided downstream of the heat storage heater, and heat insulation provided to form a ventilation path on the outer peripheral side of the heat storage body, the heat storage heater and the decomposition section. Material, and a blowing means provided in the ventilation path, the heat amount stored in the nighttime heat storage unit is radiated by the blowing means during the daytime, and at the same time, the tobacco contained in the indoor air sucked by the blowing means. Decompose and purify the smoke etc. in the decomposition section and blow it indoors. It is intended to realize a regenerative electric hot air fan having a high heating effect, a maintenance-free function, and a high purification function.

According to a second aspect of the present invention, there is provided a catalyst heater in which a decomposition section is formed by forming a catalyst layer on a surface of a porous metal base material which also serves as a catalyst carrier and a heating element. The present invention realizes a regenerative electric hot air blower comprising a catalyst body formed by forming a catalyst layer on the surface of a base material and further improving the indoor air purifying ability with maintenance free.

According to a third aspect of the present invention, the power supply to the catalyst heater is performed even at night, thereby increasing the amount of heat stored in the heat storage body, thereby realizing a regenerative electric hot air fan having a high heating effect. It is.

According to a fourth aspect of the present invention, there is provided a regenerative electric hot air blower having a high purifying ability, a low pressure loss and a high efficiency, wherein the catalyst heater and the metal base of the catalyst body are made of expanded metal. Is realized.

According to a fifth aspect of the present invention, there is provided a sintered oxide of aluminum and at least one selected from the group consisting of cerium, barium, lanthanum, and zirconium on the surface of the metal substrate of the catalyst heater and the catalyst body. When,
As a configuration in which a catalyst containing a noble metal catalyst is supported, a regenerative electric hot air blower having a high catalytic activity and a high purifying ability for processing air is realized.

According to a sixth aspect of the present invention, the metal substrate of the catalyst heater has a corrugated plate shape, and the metal substrate of the catalyst body has a flat plate shape. This realizes a regenerative electric hot air blower that can perform purification with high efficiency.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a configuration of a regenerative electric hot air blower according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing a configuration of a disassembly section of a regenerative electric hot air blower according to a second embodiment of the present invention.

FIG. 3 is a sectional view showing the configuration of a disassembly section of a regenerative electric hot air blower according to a third embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 heat storage heater 2 heat storage heater 2 catalyst heater 4 catalyst heater 5 ventilation path 6 heat insulating material 7 disassembly unit 8 catalyst heater 9 catalyst body 10 blowing means 15a metal base 15b metal base 16 catalyst layer

Claims (6)

[Claims] 1. A heat storage element, a heat storage heater for heating the heat storage element, a disassembly section provided downstream of the heat storage heater, and a ventilating part around the heat storage element, the heat storage heater and the disassembly section. A regenerative electric hot air blower comprising: a heat insulating material provided to form a passage; and a blower provided in the ventilation passage. 2. A catalyst heater in which a decomposition section is formed by forming a catalyst layer on a surface of a porous metal substrate which also serves as a catalyst carrier and a heating element, and a catalyst layer formed on a surface of a non-conductive porous metal substrate. The regenerative electric hot air blower according to claim 1, wherein the regenerative electric hot air blower is configured by a catalyst body formed by forming: 3. The regenerative electric hot air blower according to claim 1, wherein power is supplied to the catalyst heater even at night. 4. The regenerative electric hot air blower according to claim 2, wherein the metal substrate of the catalyst heater and the catalyst body is an expanded metal. 5. A catalyst comprising a sintered oxide of aluminum, at least one selected from the group consisting of cerium, barium, lanthanum, and zirconium, and a noble metal catalyst on the surface of the metal substrate of the catalyst heater and the catalyst body. The regenerative electric hot air blower according to any one of claims 2 to 4, further comprising a catalyst. 6. The regenerative electric hot air blower according to claim 1, wherein the metal substrate of the catalyst heater is corrugated, and the metal substrate of the catalyst body is flat.