JPH10141687A - Air conditioner with deodorizing function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the corrosion or isolation failure of an electrode layer and maintain a high deodorizing performance at a low electricity rate by providing in the ventilation circuit of an air conditioner a deodorizing device having the electrode terminals of a deodorizing unit at the diagonal parts of both surfaces and making it possible to supply electric current even when a PTC heater is broken. SOLUTION: In an air conditioner, a PTC heater 2 made of a thermistor with a positive temperature characteristic has both surfaces with many honey- comb shaped ventilating holes or the like. Electrode layers 5 are provided on both the surfaces by thermal spraying of brass. On the surface of each electrode layer 5, is provided a coat layer 6 with high heat resistance, rustproof, waterproof and electric insulating characteristics. An adsorption oxidation catalyst layer 7 is composed of the mixture of an adsorbent (zeolite, alumina, etc.) for adsorbing an odor component and oxidation catalyst (platinum, palladium, etc.) for oxidizing and decomposing the adsorbed order component. According to this configuration, a contact area is large so that high deodorizing performance can be obtained even when the PTC heater is not always turned on.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating element-integrated deodorizing unit using an adsorption oxidation catalyst capable of automatically adsorbing, decomposing, and regenerating an odor by energizing the heating element. The present invention relates to an air conditioner having a deodorizing function which has a function of removing odorous components and enhances the safety protection function of a heating element and prevents a decrease in room temperature during rapid heating operation, auxiliary heating and dehumidifying operation.

[0002]

2. Description of the Related Art A conventional deodorizer integrated with a heater is disclosed in Japanese Patent Application Laid-Open No. 5-154348.
As shown in FIG. 4, the electrode layer 105 is formed on the surface of the PTC heater 2 having a large number of ventilation holes formed in a honeycomb shape or a lattice shape.
Is provided, and the deodorizing catalyst 107 is directly supported on the surface thereof.
Some deodorize under heating. As shown in FIG. 15, as means for supplying electricity to these PTC heaters 2, one side of the PTC heaters 2 is connected to the electrode terminals in parallel from the same direction.

Further, as described in Japanese Utility Model Laid-Open Publication No. 3-83621, a heater in which a heat-resistant glass tube is used and an adsorption oxidation catalyst layer are integrated and installed in a ventilation circuit of an air conditioner. It has been known.

[0004]

However, in the structure of the above-mentioned conventional heater-integrated deodorizing apparatus, the catalyst having the deodorizing function is carried on the surface of the honeycomb-shaped or lattice-shaped PTC heater. Since the odorous components come into contact with the heated catalyst and cause an oxidizing reaction due to the contact with the heated catalyst to cause deodorization, it is necessary to always supply power to the PTC heater, and there is a problem that the electricity cost increases. Was.

[0005] Further, since the noble metal catalyst is directly carried on the surface of the PTC heater element, the adhesion of the noble metal catalyst is reduced, rust prevention, and the like.
It is expected that there will be problems in terms of waterproofing and insulation.

Further, as is well known, the PTC heater is made of a ceramic containing barium titanate or the like as a main component and thus is easily damaged. If the electrode terminals are connected in parallel from the same direction on one side of
Even if a crack occurs in the TC heater, the heat generating portion on the side to which the electrode terminal is connected is in a state in which electricity can be supplied, so that there is a possibility that the TC heater may be operated in the broken state.

Further, in the deodorizing apparatus in which an adsorption oxidation catalyst layer is supported on the surface of a heater using a heat-resistant glass tube and installed in a ventilation circuit of an air conditioner, since the area where the catalyst is supported is small, sufficient deodorization is required. There was a problem that the ability was not obtained and that the heat-resistant glass tube was easily broken.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and has a honeycomb shape so as to adsorb odors in the air, decompose the adsorbed odor components and simultaneously regenerate the adsorption capacity. On the surface of the PTC heater formed in a lattice or corrugated shape, a coating layer is provided to improve adhesion and prevent rust, waterproof, and insulation.
Provided is an air conditioner with a deodorizing function that carries an adsorbed oxide film layer and does not need to be replaced by repeating adsorption and regeneration by heating a heater, has an easy electricity bill, and has a function excellent in deodorizing ability. The purpose is to do so.

Further, the present invention has a structure in which power cannot be supplied to the PTC heater when a crack or breakage occurs in the PTC heater, thereby improving safety and easily causing abnormalities. It is made possible to inform.

Further, the present invention efficiently utilizes the self-temperature control characteristics of a PTC heater, such as a honeycomb shape, which is a heating element carrying an adsorbed oxidation catalyst layer, provided in a ventilation circuit of an indoor unit, and performs heating operation during heating operation. The purpose of the present invention is to effectively utilize as a heat source for rapid heating and auxiliary heating and a heat source for suppressing a decrease in room temperature during a dehumidifying operation, and to perform comfortable indoor temperature control.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is formed so that both sides are opened in a honeycomb shape, a lattice shape or a corrugated shape, and have a large number of ventilation passages penetrating each other. At least one or more effects such as rust prevention, waterproofing, and insulation are provided on the heating element having electrodes formed on both surfaces of the PTC heater comprising a positive temperature characteristic thermistor, and on the heating element surface of the PTC heater having the electrode layer formed thereon. A coating layer formed with a coating layer having: an adsorption oxidation catalyst layer comprising an oxidation catalyst formed on the surface of the coating layer and having an adsorption function and a function of oxidizing and decomposing the adsorbed component and the contacted component; and A deodorizing unit comprising: a casing having a heating element having a layer formed thereon and an electrode terminal for taking out an electrode of the heating element to the outside; and the electrode terminal. In a deodorizing device comprising a heating element energizing means connected to and energizing the heating element, the electrode terminals of the deodorizing unit are provided at diagonal sides of the both sides, so that when the PTC heater is damaged, energization is not possible. A deodorizing device having such a structure is installed in a ventilation circuit of an air conditioner.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION
On the surface of the heater, at least one more rust prevention, waterproof,
It is provided with a coating layer having a function such as insulation. With this configuration, it is possible to prevent corrosion of the electrode layer, insulation failure, and the like.

Further, an adsorption oxidation catalyst layer having an adsorption function and a function of oxidizing and decomposing the adsorbed component and the contacted component is formed on a honeycomb-shaped, lattice-shaped, or corrugated PTC heater, With this configuration, a wide contact area can be ensured, deodorization can be performed without constantly supplying power to the PTC heater, and a deodorizing device having high deodorizing performance with a low cost of electricity can be provided.

Further, electrode terminals for supplying electricity to the PTC heater are provided diagonally.
If the heater is cracked or damaged, power is not supplied to the PTC heater, so that the PTC heater can be prevented from being used when the heater remains damaged.

The second aspect of the present invention relates to a case where a plurality of PTC heaters are used. Even in this case, by providing the electrode terminals diagonally, cracks or breakage may occur in any places of the PTC heater. However, power cannot be supplied to the PTC heater, and safety can be ensured.

According to a third aspect of the present invention, the casing P
A pressing unit such as a spring is provided on the TC heater holding unit or a part thereof. With this configuration, when the PTC heater is damaged, the fractured surface moves up and down or back and forth, thereby preventing the fractured surfaces from contacting each other.

According to a fourth aspect of the present invention, a casing comprising left and right and a lower portion is used, and a cutout is provided in a part of the lower portion. With this configuration, when the PTC heater is damaged, the fracture surface is separated into right and left by the weight of the PTC heater itself, thereby preventing the fracture surfaces from contacting each other.

According to a fifth aspect of the present invention, there is provided a current measuring means for measuring a current value when a current is supplied to a PTC heater provided with diagonal electrode terminals, and a current judging means for judging whether a predetermined current is flowing. And PTC corresponding to the signal of the current determination means.
A heating element energizing means for controlling energization to the heater is provided. With this configuration, if the PTC heater is cracked or damaged, the power supply to the PTC heater is stopped, the PTC heater is no longer used while the PTC heater is damaged, and the indicator light is turned on to cause an abnormality. I can tell you that

According to a sixth aspect of the present invention, there is provided a temperature detecting means for detecting a temperature near a deodorizing unit or a deodorizing unit of a PTC heater provided with diagonal electrode terminals, and for detecting whether the temperature has risen to a predetermined temperature when energized. A temperature determining means for determining the temperature and a temperature controlling means for controlling the power supply to the PTC heater in accordance with the signal of the temperature determining means are provided. With this configuration, if the PTC heater is cracked or damaged, the power supply to the PTC heater is stopped, the PTC heater is no longer used while the PTC heater is damaged, and the indicator light is turned on to cause an abnormality. I can tell you that

According to a seventh aspect of the present invention, there is provided a bridge circuit in which a deodorizing unit of a PTC heater having electrode terminals provided diagonally, a balance resistor, and a thermal fuse which is blown by the heat generated by the balance resistor are connected. Things. With this configuration, if the PTC heater cracks or breaks, the balance resistance of the PTC heater collapses,
Since the balance resistor generates heat, the thermal fuse is blown and power supply to the PTC heater is forcibly stopped. Therefore, higher safety can be ensured as a double protection device for the PTC heater.

The invention according to claim 8 is provided with a bridge circuit in which a deodorizing unit of a PTC heater having electrode terminals provided diagonally, an electromagnetic switch, and a current fuse which is blown by the operation of the electromagnetic switch are connected. Things. With this configuration, if the PTC heater cracks or breaks, the balance resistance of the PTC heater collapses, a voltage is applied to the electromagnetic switch, and when the electromagnetic switch operates, the current fuse is blown and the PTC heater is disconnected. The energization is stopped. Therefore, higher safety can be ensured as a double protection device for the PTC heater.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) First, a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 shows the configuration of a deodorizing unit in an embodiment of the present invention, FIG. 2 shows a cross section of the deodorizing unit, and FIG.

In FIG. 1, 1 is a deodorizing unit, 2 is a PTC heater as a heating element, 3 is a casing, and 4 is an electrode terminal. 2, reference numeral 5 denotes an electrode layer formed on both sides of the PTC heater 2 on the opening side, and 6 denotes a P after the electrode layer 5 is formed.
A coating layer formed on the entire surface of the TC heater 2, 7 is an adsorption oxidation catalyst layer carried on the surface of the coating layer 6, and 0 is a power supply means. In FIG. 3, reference numeral 8 denotes a leaf spring.

The PTC heater 2 has a large number of ventilation holes having a honeycomb-like, lattice-like or corrugated-like shape on both sides, and an electrode layer 5 is formed on the surfaces of both sides by thermal spraying or coating of brass. Have been. Also on the surface,
A coating layer 6 having high heat resistance and having characteristics such as rust prevention, waterproofing, and electrical insulation is provided so as to coat the entire PTC heater 2. The film layer 6 is, for example, a silica-based material having a coefficient of linear expansion close to that of the PTC heater 2 and having a role as a binder. The adsorption oxidation catalyst layer 7 is composed of a mixture of an adsorbent having a function of adsorbing and deodorizing odor components and an oxidation catalyst having a function of oxidizing and decomposing the odor components adsorbed by the adsorbent.
Here, a porous body having an adsorbing action such as zeolite, alumina, or silica can be used as the adsorbent, and a metal body having a catalytic action such as platinum, palladium, or manganese can be used as the oxidation catalyst, and is not particularly limited. . Also, P
A casing 3 for housing the TC heater 2 is formed of an electric insulator, and is connected to the current applying means 0 via electrode terminals 4 mounted diagonally in the casing 3. The electrode terminal 4 is electrically connected to the PTC heater 2 via an electrode layer 5 formed on the surface of the PTC heater 2 by coating or thermal spraying. In order to make contact, pressure is applied by a leaf spring 8.

FIG. 4 shows a typical configuration when the air conditioner is equipped with the deodorizing unit 1 according to the embodiment of the present invention. In FIG. 4, 9 is an indoor unit of the air conditioner, 1
0 is a suction port, 11 is a heat exchanger, 12 is a blowing means, 13 is a dust collection filter, and 14 is an air outlet.

Power switch of air conditioner 9 (not shown)
When the air is supplied, the blowing means 12 is operated, the room air is sucked through the suction port 10, and the suction air is cooled or heated by the heat exchange action with the heat exchanger 11. The cooled or heated air passes through the deodorizing unit 1. At this time, the adsorbent contained in the adsorption oxidation catalyst layer 7 formed on the surface of the PTC heater 2 constituting the deodorizing unit 1 adsorbs odor components in the air, and the deodorized air passes through the blowing means 12. The air is blown into the room from the air outlet 13. In addition, the power supply means 0
When power is supplied to the PTC heater 2 arbitrarily,
The adsorption oxidation catalyst layer 7, which is thermally integrated with the PTC heater 2, is heated, and the adsorbent contained in the adsorption oxidation catalyst layer 7 is also heated to desorb the adsorbed odor components, thereby adsorbing the adsorbent. To recover. At the same time, the desorbed odor component and the odor component in the air are oxidatively decomposed by the chemical action of the oxidation catalyst contained in the adsorption oxidation catalyst layer 7 heated and activated by the PTC heater 2 to become an odorless component. Note that dust in the room is collected by the dust filter 13.

In this embodiment, the deodorizing unit 1 is installed on the downstream side of the heat exchanger 11 of the indoor unit 9. However, the installing place may be any position in the wind circuit.

By energizing the PTC heater 2 in this way, the adsorbent contained in the adsorption oxidation catalyst layer 7 can regenerate the ability to adsorb odorous components, and the oxidation catalyst contained in the adsorption oxidation catalyst layer 7 can be regenerated. Can oxidatively decompose the odor component desorbed from the adsorbent. Therefore, by energizing the PTC heater 2 in a timely manner,
Irrespective of the adsorbing capacity of the adsorbent, the indoor odor component can be removed for a long period of time without replacing the deodorizing unit 1.

Further, by forming the coating layer 6 as an intermediate layer between the PTC heater 2 and the adsorption oxidation catalyst layer 7,
Rust prevention, waterproofing, and electrical insulation of the heating element are remarkably improved, and the adhesion of the catalyst is increased, so that a highly reliable deodorizing unit can be provided.

Further, by providing the electrode terminals 4 diagonally with respect to the electrodes of the PTC heater 2, if a crack occurs in the PTC heater 2 due to a strong impact such as a drop, electric conduction cannot be performed. In addition, a deodorizing unit having high safety can be provided.

(Embodiment 2) Next, a second embodiment will be described with reference to FIGS. Here, the same components as those in the previous embodiment are denoted by the same reference numerals, and description thereof is omitted.

In FIGS. 5 and 6, reference numeral 4 'denotes a center electrode terminal. In many cases, the PTC heater 2 has shape and dimensional restrictions due to its strength and production, but if it is desired to increase the size of the PTC heater 2 due to an increase in deodorizing performance or an increase in the amount of heat generated by the heater, the PTC heater 2 is required In some cases, using a plurality of pieces to increase the size is superior in terms of cost and reliability. At this time, the electrode terminal 4 is installed at a diagonal position with respect to the center electrode terminal 4 'so that the PTC may be subjected to a strong impact such as a fall.
If a crack occurs in the heater 2, only the PTC heater on the side where the crack has occurred cannot be electrically energized, and a highly safe and high-performance deodorizing unit can be provided.

(Embodiment 3) Next, a third embodiment will be described with reference to FIG. Here, the same components as those in the previous embodiment are denoted by the same reference numerals, and description thereof is omitted.

In FIG. 7, reference numeral 15 denotes a pressing unit. The deodorizing unit 1 having the electrode terminals 4 disposed diagonally is provided with a pressurizing portion 15 for forcibly moving the fractured surfaces back and forth or up and down when a crack occurs in the PTC heater 2, thereby providing a fractured surface. Can completely prevent contact between the electrode layers, and provide a highly safe deodorizing unit.

(Embodiment 4) Next, a fourth embodiment will be described with reference to FIGS. Here, the same components as those in the previous embodiment are denoted by the same reference numerals, and description thereof is omitted.

In FIGS. 8 and 9, reference numeral 16 denotes a support. FIG. 8 shows a state at the time of normal operation, and FIG. 9 shows a state at the time of breakage of the PTC heater. The electrode terminal 4 is provided diagonally, a notch is provided in a part of the lower part of the casing 3, and the notch is flexible and has a high heat resistance. In the case where a crack occurs in the PTC heater 2, the fracture surface is naturally separated by the weight of the PTC heater, completely preventing contact between the electrode layers of the fracture surface, and providing a highly safe deodorizing unit. Can be.

(Embodiment 5) Next, a fifth embodiment will be described with reference to FIG. Here, the same components as those in the previous embodiment are denoted by the same reference numerals, and description thereof is omitted.

In FIG. 10, reference numeral 17 denotes current measuring means, 1
8 is a current judging means, and 19 is an energization control means.

In the deodorizing unit 1 having the electrode terminals 4 provided diagonally, the level of current flowing when power is supplied to the PTC heater 2 is measured by a current measuring means 17 using a current transformer or the like, and a predetermined current value is supplied. The current determination means 18 determines whether or not the current is flowing, and if the current value is equal to or less than the predetermined current value or is equal to or more than the predetermined current value, the power supply control means 19 immediately stops the power supply means 0 to the PTC heater 2. An indicator lamp (not shown) for indicating that an abnormality has occurred is turned on.

As described above, according to this embodiment, when a crack or the like occurs in the PTC heater 2, the value of the current flowing through the PTC heater is measured, the energization is forcibly controlled, and the indicator lamp is turned on. By reporting the abnormality, a safer and more kind deodorizing unit can be provided.

(Embodiment 6) Next, a sixth embodiment will be described with reference to FIG. Here, the same components as those in the previous embodiment are denoted by the same reference numerals, and description thereof is omitted.

In FIG. 11, reference numeral 20 denotes a temperature detecting means;
1 is a temperature determining means. A temperature detecting means 20 for measuring the temperature of the deodorizing unit 1 or the temperature in the vicinity of the deodorizing unit 1 provided with the above-mentioned electrode terminals 4 diagonally is installed, and it is determined whether the temperature has risen to a predetermined temperature when the PTC heater 2 is energized. In addition to the judgment by the judging means 21, if the temperature is lower than the predetermined temperature or higher than the predetermined temperature,
The means for energizing the heater 2 is stopped, and an indicator (not shown) for indicating that an abnormality has occurred in the body of the air conditioner 9 is turned on.

As described above, according to the present embodiment, when a crack or the like occurs in the PTC heater 2, the temperature of the deodorizing unit 1 or the vicinity thereof is measured, the energization is forcibly controlled, and the indicator lamp is turned on. By illuminating and notifying abnormalities,
A safer and more kind deodorizing unit can be provided.

(Embodiment 7) Next, a seventh embodiment will be described with reference to FIG. Here, the same components as those in the previous embodiment are denoted by the same reference numerals, and description thereof is omitted.

In FIG. 12, 22 is a resistor A, 23 is a resistor B, 24 is a resistor C, 25 is a thermal fuse A, 2
Reference numeral 6 denotes a thermal fuse B, which is a protection circuit when an even number of PTC heaters 2 are used.

The resistance A22 and the resistance B23 are 2-5.
A resistor having the same resistance and the same capacitance having a resistance of Ω and a capacity of 10 W or more. Further, the resistor C24 and the thermal fuse A25 are integrated, and when electricity flows through the resistor C24 and heat is generated, the thermal fuse A25 blows and the PT
The circuit is configured such that the circuit of the power supply means 0 to the C heater 2 is cut off, and the temperature fuse A integrated with the PTC heater 2 and the resistor A22, the resistor B23, and the resistor C24.
25 is connected as a bridge circuit.

If a crack occurs in any one of the PTC heaters 2, the balance resistance of the bridge circuit is broken, and a current flows through the resistor C 24. Is cut off and PTC
The heater 2 is not energized, and an indicator lamp (not shown) for indicating that an abnormality has occurred in the air conditioner 9 body is turned on. The thermal fuse B26 is blown when an overcurrent flows through the energizing means 0, and cuts off the circuit of the energizing means 0.

As described above, according to this embodiment, when a crack or the like occurs in the PTC heater 2, the circuit of the energizing means 0 is forcibly shut off, and the indicator lamp is turned on to notify the abnormality, thereby A safer and more kind deodorizing unit can be provided.

Embodiment 8 Next, an eighth embodiment will be described with reference to FIG. Here, the same components as those in the previous embodiment are denoted by the same reference numerals, and description thereof is omitted.

In FIG. 13, 27 is an electromagnetic switch, 28
Shows a protection circuit when an even number of resistors D and PTC heaters 2 are used.

The resistance A22 and the resistance B23 are 2-5.
A resistor having the same resistance and the same capacitance having a resistance of Ω and a capacity of 10 W or more. Further, the electromagnetic switch 27 has a circuit configuration in which when a voltage is applied to the coil, the contact switch moves, the energizing means 0 forms a short circuit, the thermal fuse B28 blows, and the circuit of the energizing means 0 to the PTC heater 2 is cut off. The PTC heater 2 is connected to the resistor A22, the resistor B23, and the electromagnetic switch 27 as a bridge circuit.

If a crack occurs in any one of the PTC heaters 2, the balance resistance of the bridge circuit breaks down, a voltage is applied to the coil of the electromagnetic switch 27, and the contact switch of the electromagnetic switch 27 moves. Since the circuit of the power supply means 0 is short-circuited, the thermal fuse B28 is blown, the circuit of the power supply means 0 is cut off, the power supply to the PTC heater 2 cannot be performed, and an abnormality has occurred in the air conditioner 9 body. An indicator light (not shown) to be displayed is turned on.

As described above, according to the present embodiment, when a crack or the like occurs in the PTC heater 2, the circuit of the power supply means 0 is forcibly cut off, and the indicator lamp is turned on to notify the abnormality, whereby A safer and more kind deodorizing unit can be provided.

[0056]

As is apparent from the above embodiment, the invention according to claim 1 is provided with at least one or more coating layers having functions such as rust prevention, waterproofing, and insulation on the surface of the PTC heater. It is. With this configuration, it is possible to prevent corrosion of the electrode layer, insulation failure, and the like.

Also, an adsorption oxidation catalyst layer having an adsorption function and a function of oxidizing and decomposing the adsorbed component and the contacted component is formed on a PTC heater formed in a honeycomb shape, a lattice shape, or a corrugated shape. With this configuration, a wide contact area can be ensured, deodorization can be performed without constantly supplying power to the PTC heater, and a deodorizing device having high deodorizing performance with a low cost of electricity can be provided.

Also, electrode terminals for supplying power to the PTC heater are provided diagonally, and this configuration
If the heater is cracked or damaged, power is not supplied to the PTC heater, so that the PTC heater can be prevented from being used when the heater remains damaged.

The second aspect of the present invention relates to a case where a plurality of PTC heaters are used. Even in this case, if the electrode terminals are provided diagonally, cracks or breakage may occur in any places of the PTC heater. However, power cannot be supplied to the PTC heater, and safety can be ensured.

According to a third aspect of the present invention, the P
A pressing unit such as a spring is provided on the TC heater holding unit or a part thereof. With this configuration, when the PTC heater is damaged, the fractured surface moves up and down or back and forth, thereby preventing the fractured surfaces from contacting each other.

According to a fourth aspect of the present invention, a cutout is provided in a part of the lower portion of the casing, and when the PTC heater breaks, the cut surfaces are naturally separated from each other by the weight of the PTC heater. It is. With this configuration, when the PTC heater is damaged, the fractured surface is naturally separated to the left and right, thereby preventing the fractured surfaces from contacting each other.

According to a fifth aspect of the present invention, there is provided a current measuring means for measuring a current value when power is supplied to a PTC heater having diagonal electrode terminals, and a current judging means for judging whether a predetermined current is flowing. And PTC corresponding to the signal of the current determination means.
A heating element energizing means for controlling energization to the heater is provided. With this configuration, if the PTC heater is cracked or damaged, the power supply to the PTC heater is stopped, the PTC heater is no longer used while the PTC heater is damaged, and the indicator light is turned on to cause an abnormality. I can tell you that

According to a sixth aspect of the present invention, there is provided a temperature detecting means for detecting a temperature in the vicinity of a deodorizing unit or a deodorizing unit of a PTC heater provided with diagonal electrode terminals, and whether the temperature has risen to a predetermined temperature when energized. A temperature determining means for determining the temperature and a temperature controlling means for controlling the power supply to the PTC heater in accordance with the signal of the temperature determining means are provided. With this configuration, if the PTC heater is cracked or damaged, the power supply to the PTC heater is stopped, the PTC heater is no longer used while the PTC heater is damaged, and the indicator light is turned on to cause an abnormality. I can tell you that

According to a seventh aspect of the present invention, there is provided a bridge circuit in which a deodorizing unit of a PTC heater having diagonal electrode terminals, a balance resistor, and a thermal fuse which is blown by the heat generated by the balance resistor are connected. Things. With this configuration, if the PTC heater cracks or breaks, the balance resistance of the PTC heater collapses,
Since the balance resistor generates heat, the thermal fuse is blown and power supply to the PTC heater is forcibly stopped. Therefore, higher safety can be ensured as a double protection device for the PTC heater.

The invention according to claim 8 is provided with a bridge circuit in which a deodorizing unit of a PTC heater having diagonal electrode terminals, an electromagnetic switch, and a current fuse which is blown by the operation of the electromagnetic switch are connected. Things. With this configuration, if the PTC heater cracks or breaks, the balance resistance of the PTC heater collapses, a voltage is applied to the electromagnetic switch, and when the electromagnetic switch operates, the current fuse is blown and the PTC heater is disconnected. The energization is stopped. Therefore, higher safety can be ensured as a double protection device for the PTC heater.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a deodorizing unit showing a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a PTC heater section of the same embodiment.

FIG. 3 is a sectional view of the deodorizing unit of the same embodiment.

FIG. 4 is a cross-sectional configuration diagram of the air conditioner with a deodorizing function of the same embodiment.

FIG. 5 is a configuration diagram of a deodorizing unit showing a second embodiment of the present invention.

FIG. 6 is a sectional view of the deodorizing unit of the same embodiment.

FIG. 7 is a sectional view of a deodorizing unit showing a third embodiment of the present invention.

FIG. 8 is a configuration diagram of a deodorizing unit showing a fourth embodiment of the present invention.

FIG. 9 is a configuration diagram of the deodorizing unit of the same embodiment when it is broken.

FIG. 10 is a configuration diagram of a deodorizing unit showing a fifth embodiment of the present invention.

FIG. 11 is a configuration diagram of a deodorizing unit showing a sixth embodiment of the present invention.

FIG. 12 is a circuit configuration diagram of a deodorizing unit showing a seventh embodiment of the present invention.

FIG. 13 is a circuit configuration diagram of a deodorizing unit showing an eighth embodiment of the present invention.

FIG. 14 is an enlarged sectional view of a PTC heater showing a conventional example.

FIG. 15 is a sectional view of a conventional deodorizing unit.

[Explanation of symbols]

 0 energizing means 1 deodorizing unit 2 PTC heater 3 casing 4 electrode terminal 4 'center electrode terminal 5 electrode layer 6 coating layer 7 adsorption oxidation catalyst layer 8 leaf spring 9 air conditioner 10 suction port 11 heat exchanger 12 blowing means 13 dust collection Filter 14 outlet 15 pressurizing section 16 support 17 current measuring means 18 current determining means 19 conduction control means 20 temperature detecting means 21 temperature determining means 22 resistor A 23 resistor B 24 resistor C 25 temperature fuse A 26 temperature fuse B 27 Electromagnetic switch 28 Resistor D

Claims (8)

[Claims] 1. A P-type thermistor comprising a positive temperature characteristic thermistor formed so as to have a large number of ventilation paths penetrating each other on both sides.
A heating element in which electrodes are formed on both surfaces of the TC heater, and a coating layer on the heating element surface of the PTC heater in which the electrodes are formed, on which a coating layer for obtaining at least one of rustproof, waterproof, and insulating effects is formed. And an adsorption oxidation catalyst layer comprising an oxidation catalyst having a function of adsorbing odor formed on the surface of the coating layer and a function of oxidizing and decomposing the adsorbed component and the contacted component, and the heat generated by forming the adsorption oxidation catalyst layer. A deodorizing unit comprising a casing having an electrode terminal for holding the body and taking out the electrode of the heating element to the outside, and a heating element energizing means connected to the electrode terminal and energizing the heating element, An air conditioner with a deodorizing function, wherein a deodorizing device in which electrode terminals of the deodorizing unit are provided at opposite corners of the both sides is provided in a ventilation circuit of the air conditioner. 2. The casing of the deodorizing unit has a structure in which an even number of heating elements having the adsorbed oxidation catalyst layer formed thereon can be arranged in an even number from the central portion, and the electrode terminals are disposed at the central portion and the central electrode. 2. The air conditioner with a deodorizing function according to claim 1, wherein a deodorizing device configured such that both ends are diagonal to each other is provided in a ventilation circuit of the air conditioner. 3. A deodorizing unit provided with a pressurizing unit at a part of a heating element holding portion or a casing of a deodorizing unit, wherein a broken surface moves up and down or back and forth when the heating element is broken so that the broken surfaces do not come into contact with each other. The air conditioner with a deodorizing function according to claim 1 or 2, wherein the air conditioner has a device structure. 4. A notch is provided at a part of a lower portion of a casing of a deodorizing device so that when the heating element is broken by an impact or the like, the fracture surfaces are separated from each other by its own weight and the fracture surfaces are not in contact with each other. The air conditioner with a deodorizing function according to claim 1 or 2, wherein the air conditioner has a structure of a provided deodorizing device. 5. A current measuring means for measuring a current value of the heating element energizing means, a current judging means for judging whether a predetermined current value is outputted to the current measuring means at the time of energization, and an output from the current judging means. The deodorizing device according to any one of claims 1 to 4, wherein the deodorizing device is provided with a heating element energization control unit that controls energization of the heating element in accordance with a signal to be performed. Air conditioner. 6. A temperature detecting means for detecting a temperature of the deodorizing unit or a temperature in the vicinity of the deodorizing unit, and a temperature determining means for determining whether or not the temperature of the heating element or the temperature in the vicinity of the heating element has increased to a predetermined temperature when energized. 6. The deodorizing device according to claim 1, further comprising a heating element energization control unit that controls energization of the heating element in response to a signal output by the temperature determination unit. An air conditioner with a deodorizing function according to item 1. 7. A deodorizing unit is connected to a bridge circuit connecting a resistor and a thermal fuse that is blown by the heat generated by the resistor, and when the thermal fuse is blown, the circuit of the heating element energizing means is cut off. The air conditioner with a deodorizing function according to any one of claims 2 to 6, wherein the air conditioner has a deodorizing device structure. 8. A deodorizing unit, wherein an electromagnetic switch and a bridge circuit connecting a current fuse that blows when the electromagnetic switch is operated are connected to each other, and when the current fuse blows, the heating element energizing means is connected. The air conditioner with a deodorizing function according to any one of claims 2 to 6, wherein the air conditioner has a structure of a deodorizing device in which the circuit of (1) is cut off.