JPH09257364A - Deodorizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to operate without fail by using the electric facility having small power source capacity used in general. SOLUTION: This deodorizer A1 has a casing 11 having a suction port 11a and an exhaust port 11b, and a catalyst 12 and a heater 13 in the casing 11, which comprises a temperature detecting means 14 for detecting the temperature of the catalyst 12, an electric controller 30 for controlling the energization of the heater 13 to maintain the detected temperature of the means 14 at a set temperature, and a cooler 51 of a deep freezer 50 controlled by the controller 30 and provided in the port 11b to cool the air exhausted via the port 11b by the cooler 51. In the state that the detected temperature is maintained at the set temperature by the controller 30, the freezer 50 is held in the stopped state at the time of energizing the heater 13, and the freezer 50 is operated at the time of deenergizing the heater 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an odor component (for example, amines, hydrogen sulfide, aldehydes, ammonia, etc.) contained in air in a refrigerator or a room where people come in and out.
The present invention relates to an oxidative decomposition type deodorizing device that oxidatively decomposes (combusts) and removes ethyl mercaptan etc.

[0002]

2. Description of the Related Art As one of oxidative decomposition type deodorizers, a casing having an inlet and an outlet, a catalyst provided inside the casing, and a catalyst disposed near or in contact with the catalyst to generate heat by energization. Some of them are provided with a heating element, which is disclosed in, for example, Japanese Patent Application Laid-Open No. 4-114720.

[0003]

By the way, in the deodorizing device of the above-mentioned publication, the heated air after oxidizing and decomposing and removing the odor components is discharged as it is. When used, there is a problem that the load of the refrigerator for refrigeration increases, and when the deodorizing device is used in a room where people enter and leave, there is a problem that the room temperature rises.

This problem is solved by the applicant first in Japanese Patent Application No. 8-4.
As proposed in Japanese Patent No. 3734, the problem can be solved by providing a cooler of a refrigerating apparatus at an outlet of the casing and arranging air discharged through the outlet to be cooled by the cooler. Since the heating element controlled by the electric control device and the refrigerating device are both devices with large power consumption, energization of the heating element and starting of the refrigerating device (the operating current temporarily increases)
In order to prevent a problem from occurring even when the above is obtained at the same time, a large power supply capacity is required, a circuit breaker (breaker) for a large current is required, and a large equipment cost is required.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to provide a deodorizing device which can be operated without trouble by using a commonly used electric equipment having a small power supply capacity. In the invention of claim 1, in a deodorizing device comprising a casing having an inlet and an outlet, a catalyst provided inside the casing, and a heating element that is disposed close to or in contact with the catalyst and generates heat by energization, The temperature detecting means for detecting the temperature of the catalyst, and the heat generation so that the detected temperature is maintained at a set temperature (usually a temperature range having an upper limit setting temperature and a lower limit setting temperature) based on the detection temperature of the temperature detecting means. An electric control device for controlling energization to the body is provided, and a cooler of a refrigerating device whose operation is controlled by the electric control device is provided at the discharge port of the casing for discharging the same. The air discharged through the cooling device is cooled by the cooler, and in the state where the detected temperature is maintained at the set temperature by the electric control device, the refrigerating device is turned on when the heating element is energized. The refrigeration system was operated while the heating element was not energized while being kept in a stopped state.

According to the second aspect of the present invention, a casing having an inlet and an outlet, a catalyst provided inside the casing, and a heating element which is disposed close to or in contact with the catalyst and generates heat when energized. In a deodorizing device equipped with, the temperature detection means for detecting the temperature of the catalyst, and the energization to the heating element is controlled based on the detection temperature of the temperature detection means so that the detection temperature is maintained at the set temperature. An electric control device is provided, and a cooler of a refrigerating device whose operation is controlled by the electric control device is provided at the discharge port of the casing so that the air discharged through the discharge port is cooled by the cooler. In addition, the electric control device disables energization of the heating element for a predetermined time when the refrigerating device is started. Considering that the operating current at the time of starting the refrigerating device temporarily increases and then stabilizes for a predetermined time during which the heating element cannot be energized,
Determine based on the time until the current used stabilizes.

[0007]

In the deodorizing device according to the present invention, the temperature detected by the temperature detecting means is maintained at the set temperature by the electric control device for controlling the energization of the heating element and the operation of the refrigerating device. In this state, the refrigeration system is held in a stopped state when the heating element is energized, and the refrigeration system is operated when the heating element is de-energized.
Electricity to the heating element and operation of the refrigeration system are not obtained at the same time, a large power supply capacity and a circuit breaker for large current are not required, and the deodorization is performed using generally used electrical equipment with a small power supply capacity. The device can be operated without interruption (without activating the commonly used breakers for small currents).

In the deodorizing apparatus according to the second aspect of the present invention, the electric control unit for controlling the energization of the heating element and the operation of the refrigerating apparatus controls the energization of the heating element for a predetermined time when the refrigerating apparatus is started. Since it was made impossible, when the refrigeration system is started while the heating element is energized, the heating element is de-energized for a predetermined time, and the heating element is energized and the refrigeration system is started. Increase and stabilize after that) does not require a circuit breaker for large power supply capacity and large current at the same time, and there is no problem with the deodorizing device by using electrical equipment with a general small power supply capacity. Can be activated.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show an embodiment of a deodorizing device according to the invention of claim 1, and this deodorizing device A1 is of an oxidative decomposition type which oxidatively decomposes and removes odorous components contained in air with a catalyst. And a casing 11 having an inlet 11a and an outlet 11b, and this casing 1
Noble metal-based catalyst 12 installed inside 1 and electric heater 1
3 and the temperature sensitive tubes 14 and 15, and the suction port 1 of the casing 11.
A fan motor 16 assembled to 1a, and a cooler 51 assembled to the outlet 11b of the casing 11,
A refrigerator unit that constitutes the refrigerator 50 with the cooler 51 (electrical operation is performed by the electric control device 30.
N / OFF controlled) 50a.

The casing 11 is provided with an intake port 11a for inhaling air containing an odorous component at the bottom and an exhaust port 11b for exhausting air after deodorizing the odorous component is provided at the lower side of the side. The partition plate 17 divides the first chamber R1 in which the suction port 11a is opened and the second chamber R2 in which the discharge port 11b is opened and communicates with the upper part of the first chamber R1 at the upper part.

The noble metal catalyst 12 is attached to the casing 11 and the partition plate 17 via the bracket 18 at approximately the center of the first chamber R1 and is a known one in itself, as shown in FIG. It has a honeycomb shape with a diameter of 0.5 to 2.5 mm, and cordierite, γ-alumina, nickel, chrome ribbon, foam metal, mesh, etc. are used as the carrier. A noble metal such as rhodium is supported alone or as a mixture of two elements.

The electric heater 13 is a heating element that mainly heats the catalyst 12, has a meandering shape as shown in detail in FIG. 3, and is attached to the casing 11 on the suction port 11a side of the catalyst 12. And is placed close to the catalyst 12 (it is also possible to place it in contact with the catalyst 12 for implementation). The fan motor 16 includes the electric heater 13 and the catalyst 1.
It is a blower that blows air containing an odorous component toward 2, which is provided at the suction port 11a and is assembled to the casing 11 via a bracket (not shown).

The temperature sensing cylinder 14 has a discharge port 11 rather than the catalyst 12.
The catalyst 12 is provided near the catalyst 12 on the side b.
The temperature of the catalyst 12 is indirectly detected by detecting the temperature of the air immediately adjacent to. Further, as shown in FIG. 4, the temperature controller 31 in the electric control device 30 connected to the temperature sensing cylinder 14 is incorporated in the electric circuit of the electric heater 13, the fan motor 16, and the refrigerator unit 50a, When the temperature T detected by the temperature sensitive cylinder 14 reaches the upper limit set temperature TH, the heater electric circuit (hereinafter, simply referred to as a heater circuit)
And the fan motor electric circuit (hereinafter, simply referred to as a fan circuit) and the refrigerator unit electric circuit (hereinafter, simply referred to as a unit circuit) are closed, and the temperature T is the lower limit set temperature TL (the odor component of the air in the catalyst 12 is Fan circuit and unit circuit when the temperature reaches a temperature at which the catalyst is completely oxidatively decomposed and removed, that is, the lower limit value of the complete catalyst reaction temperature (set temperature of 200 to 300 ° C, which varies depending on the type of catalyst) or higher Open the heater circuit and close the heater circuit.
L can be changed appropriately.

The temperature sensitive tube 15 is provided at the exhaust port 11b and detects the temperature of the exhaust air. Also, the temperature sensitive tube 1
5, the temperature controller 32 in the electric control device 30 connected to
As shown in FIG. 4, it is for preventing abnormal overheating of the catalyst 12 and is incorporated in the electric circuit of the electric heater 13, and when the temperature of the exhaust air is lower than the allowable temperature, the heater circuit is closed and The heater circuit is opened when the temperature exceeds the allowable temperature, and the allowable temperature can be changed appropriately. The allowable temperature at which the temperature controller 32 is opened is a temperature generated when the catalyst 12 is abnormally overheated, and does not appear during normal operation shown in FIG.

The electric control unit 30 includes an electric heater 13, temperature sensitive tubes 14 and 15, a fan motor 16 and a refrigerator unit 5.
0a, and the electric control device 30 controls energization of the electric heater 13 and each operation of the fan motor 16 and the refrigerator unit 50a. The refrigerator unit 50a has a configuration excluding the cooler 51 of the conventionally known refrigeration apparatus 50, and includes an electric compressor, a condenser, an electric cooling fan for a condenser, a dryer, a capillary tube and the like (not shown). There is.

In the deodorizing apparatus A1 configured as described above, in the electric circuit shown in FIG. 4, the temperature controller 31 closes the electric circuit of the electric heater 13 and the fan motor 16 and the refrigerator unit 50a are common. When the electric circuit is opened and the temperature controller 32 closes the electric circuit of the electric heater 13 (for example, at room temperature), if the power switch (not shown) is turned on to start the use, the electric heater 13 Energization is started to heat the catalyst 12, and as a result, the temperature T (temperature of the catalyst 12) detected by the temperature sensing cylinder 14 rises toward the upper limit set temperature TH, as shown in FIG.

Thus, when the temperature T detected by the temperature sensing cylinder 14 reaches the upper limit set temperature TH, the temperature controller 31 opens the electric circuit of the electric heater 13 and the electric circuits of the fan motor 16 and the refrigerator unit 50a. close. Therefore, the power supply to the electric heater 13 is cut off, and the temperature sensitive tube 1
When the temperature T detected by 4 decreases toward the lower limit set temperature TL and the temperature T reaches the lower limit set temperature TL, the temperature controller 31 closes the electric circuit of the electric heater 13 and the fan motor 16 and the refrigerator. The electric circuit of the unit 50a is opened. After that, the energization of the electric heater 13 is restarted, and the temperature T detected by the temperature sensing cylinder 14 rises again toward the upper limit set temperature TH. The increase / decrease of the temperature T within the set temperature range is repeated until the power switch is turned off, and the temperature T is maintained within the set temperature range.

During the above-described operation, the temperature T detected by the temperature sensing cylinder 14 is changed from the upper limit set temperature TH to the lower limit set temperature TL.
When the temperature is lowered toward (the temperature controller 31 opens the heater circuit and closes the fan circuit and the unit circuit), the fan motor 16 is operated and the refrigerator unit 50a is operated. The air containing the odorous component in the space in which the device A1 is disposed is sucked into the first chamber R1 through the suction port 11a and flows toward the catalyst 12, and the odorous component is completely oxidized by the heated catalyst 12. The air that has been decomposed and removed, and the odorous components have been removed, flows from the first chamber R1 to the second chamber R2 and is blown and discharged from the discharge port 11b through the cooler 51 as shown by the arrow.

By the way, at this time, the refrigerator unit 50a is operating and the refrigerating apparatus 50 is operating, and the air discharged from the discharge port 11b (heated by the heat by the electric heater 13 and the reaction heat by oxidative decomposition) is heated. The air) is cooled by the cooler 51 and discharged. Therefore, it is possible to suppress an increase in the load on the refrigerator freezing device when the deodorizing device A1 is used in, for example, a refrigerator, and the indoor temperature when the deodorizing device A1 is used in, for example, a room where people enter and leave. Can be suppressed.

Further, as is apparent from the above description, in the deodorizing apparatus A1, the temperature T is set in the set temperature range (the lower limit setting temperature TL and the upper limit setting temperature T by the electric control device 30).
In the state of being maintained in the temperature range between H), the refrigerating apparatus 50 is held in a stopped state when the electric heater 13 is energized, and the refrigerating apparatus 50 is operated when the electric heater 13 is not energized. Energizing the heater 13 and the refrigerating device 5
0 is not obtained at the same time, a large power supply capacity and a circuit breaker for a large current are not required, and the deodorizing device A1 can be safely operated by using an electric equipment of a generally used small power supply capacity (generally, It can be activated (without activating the circuit breaker for the small currents used).

FIGS. 6 to 8 show an embodiment of the deodorizing device according to the invention of claim 2. In this deodorizing device A2, the ON / OFF control of the refrigerator unit 50a is performed by the temperature controller 33. That, refrigerator unit 50
The electric circuit of the timer 34 and the relay 35 are connected in parallel to the electric circuit of a, the normally closed timer contact 34a is connected in series to the electric circuit of the relay 35, and the normally closed relay contact 35a is the electric heater 13. 1 has the same configuration as that of the embodiment shown in FIGS. 1 to 5 except that the configuration is connected in series to the electric circuit of FIG.

The temperature controller 33 is connected to the temperature sensing cylinder 19 provided on the discharge side of the cooler 51, and when the temperature detected by the temperature sensing cylinder 19 is equal to or higher than the set temperature, the refrigerator unit 5 is connected.
The electric circuit of 0a is closed and the electric circuit of the refrigerator unit 50a is opened when the temperature is lower than the set temperature, and the set temperature can be changed appropriately. Timer 34
Is to start timing by starting energization (closing operation of the temperature controller 33) and to open the normally closed timer contact 34 after a predetermined time has elapsed to maintain the open state. The above predetermined time is based on the time until the used current stabilizes in consideration of the fact that the used current at the time of starting the refrigerating device 50 temporarily increases and then stabilizes. Has been decided. The relay 35 opens the normally closed relay contact 35a by energization and keeps it in an open state to disable energization to the electrothermal heater 13. It is possible to energize the heater 13.

In the deodorizing device A2 constructed as described above, in the electric circuit shown in FIG. 7, the temperature controller 31 closes the electric circuit of the electric heater 13 and opens the electric circuit of the fan motor 16 to adjust the temperature. The heater 32 is the electric heater 1
3 is closed and the temperature controller 33 opens the common electric circuit of the refrigerator unit 50a, the timer 34 and the relay 35, the power switch (not shown) is turned on.
When the N operation is started and the use is started, the electric heater 13 is energized to heat the catalyst 12, and as a result, the temperature detected by the temperature sensing cylinder 14 (the temperature of the catalyst 12) as shown in FIG. T rises toward the upper limit set temperature TH.

Thus, when the temperature T detected by the temperature sensing cylinder 14 reaches the upper limit set temperature TH, the temperature controller 31 opens the electric circuit of the electric heater 13 and closes the electric circuit of the fan motor 16. For this reason, the power supply to the electric heater 13 is cut off, the temperature T detected by the temperature sensing cylinder 14 decreases toward the lower limit set temperature TL, and the fan motor 16 is operated. Further, when the temperature T detected by the temperature sensing cylinder 14 reaches the lower limit set temperature TL, the temperature controller 3
1 closes the electric circuit of the electric heater 13 and opens the electric circuit of the fan motor 16. Therefore, the electric heater 1
3 is restarted, and the temperature T detected by the temperature sensing cylinder 14 is detected.
Increases again toward the upper limit set temperature TH, and the operation of the fan motor 16 is stopped. The increase / decrease of the temperature T within the set temperature range is repeated until the power switch is turned off, and the temperature T is maintained within the set temperature range.

During the above operation, the upper limit set temperature T
When the temperature decreases from H to the lower limit set temperature TL (when the temperature controller 31 opens the heater circuit and closes the fan circuit), the fan motor 16 is operated, so that the deodorizing device A2 is installed. The air containing the odorous component in the space is sucked into the first chamber R1 from the suction port 11a and is flowed toward the catalyst 12, and the odorous component is completely oxidized and decomposed in the heated catalyst 12 to be removed. The air from which the odorous components have been removed flows from the first chamber R1 to the second chamber R2 and is blown and discharged from the discharge port 11b through the cooler 51 as shown by the arrow.

Further, during the above-mentioned operation, the temperature sensitive tube 1
When the temperature detected by 9 rises to the set temperature (at this time, the fan motor 16 is stopped, but the electric heater 1
By the heating by 3, the natural flow of air is generated from the intake port 11a to the exhaust port 11b, and the heated air is discharged through the cooler 51 that does not exhibit the cooling function, and the temperature detected by the sensitive cylinder 19 rises to the set temperature.) Then, the temperature controller 33
Closes the electric circuits of the refrigerator unit 50a, the timer 34, and the relay 35, whereby the refrigerator unit 50a, the timer 34, and the relay 35 are energized to start the refrigerator 50, and at the same time, the relay contact 35a is opened. Electricity to the electric heater 13 is disabled, and the temperature controller 3
When the elapsed time after 3 is closed reaches a predetermined time, the timer contact 34a opens and the relay 35 is de-energized,
As a result, the relay contact 35a is closed and the electric heater 13
It is possible to energize.

As described above, in the deodorizing device A2, since the electric heater 13 is not energized for a predetermined time when the refrigerating device 50 is started, when the refrigerating device 50 is started while the electric heater 13 is energized, The energization of the electric heater 13 is cut off for a predetermined time, so that the energization of the electric heater 13 and the start of the refrigerating apparatus 50 are not obtained at the same time, and a large power supply capacity and a circuit breaker for a large current are not required. It is possible to operate the deodorizing device A2 without any trouble by using the electric equipment having a small power supply capacity used.
The operation of the refrigerating apparatus 50 is stopped when the temperature detected by the sensitive tube 19 drops below the set temperature.
Is performed by opening the electric circuits of the refrigerator unit 50a, the timer 34 and the relay 35.

In each of the above-mentioned embodiments, the present invention was carried out by using the noble metal-based catalyst 12, but it is also possible to use a catalyst other than the noble metal-based catalyst when carrying out the present invention. In each of the above embodiments, the catalyst 1
Although the present invention has been implemented by adopting the electrothermal heater 13 as a heating element arranged close to or in contact with 2, the configuration of this electrothermal heater can be appropriately changed and implemented. Further, in each of the above-described embodiments, the catalyst 12 is arranged above the electric heater 13, but the configuration (arrangement) of the catalyst 12 and the electric heater 13 can be appropriately changed. It is also possible to adopt a configuration in which the electric heater 13 is provided or a configuration in which the catalyst 12 and the electric heater 13 are multiply provided.

In each of the above embodiments, the casing 11 shown in FIG. 1 or 6 is adopted to implement the present invention. However, the casing 11 shown in FIG. 9 or 10 should be adopted. Is also possible. The casing 11 shown in FIG. 9 is provided with an intake port 11a for inhaling air containing an odor component on the lower right side, and an exhaust port 11b for exhausting air after deodorizing the odor component is provided on the lower left side, The interior is divided by the partition plate 17 so that the suction port 11a communicates with the first chamber R1 and the discharge port 11 through the suction duct 11c.
b is opened and is divided into a second chamber R2 communicating with the upper part of the first chamber R1 at the upper part. The intake duct 11c has an intermediate portion formed of a material having good thermal conductivity that faces the first chamber R1, and the intermediate portion (heat absorbing fins extending outward or radiating fins extending inward can also be provided. The air inside) is heat exchanged with the air inside the upper part of the first chamber R1. Therefore, the intake air is preheated and the exhaust gas is precooled, so that the thermal efficiency of the electric heater 13 can be improved, and a refrigerating apparatus (not shown) (not shown in FIG. 1 or 6) provided at the exhaust port 11b is provided. The energy saving effect of 50) can also be expected.

On the other hand, the casing 11 shown in FIG.
A suction port 11a for sucking air containing odorous components is provided on the lower left side, and a discharge port 11b for discharging air after deodorizing odorous components is provided on the bottom portion. The first chamber R1 communicating with the intake passage 11d and the discharge port 11b are opened to open the first chamber R1.
Is partitioned into a second chamber R2 communicating with the upper part of the above. The intake passage 11d is provided so as to surround the inner wall (the wall forming the first chamber R1 and the second chamber R2) made of a material having good heat conductivity, and the air inside the first chamber R1 And heat exchange with the air in the second chamber R2.
Therefore, the intake air is preheated and the exhaust gas is precooled, so that the thermal efficiency of the electric heater 13 can be improved, and a refrigerating apparatus (not shown) (not shown in FIG. 1 or 6) provided at the exhaust port 11b is provided. The energy saving effect of 50) can also be expected. Further, the outer shell temperature of the casing 11 can be lowered, and the heat insulating layer when the heat insulating material is provided around the casing 11 can be thinned.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram schematically showing an embodiment of a deodorizing device according to the invention of claim 1.

FIG. 2 is an enlarged perspective view schematically showing the catalyst shown in FIG.

FIG. 3 is an enlarged plan view schematically showing the electric heater shown in FIG.

FIG. 4 is an electric circuit diagram showing a part of the electric control device shown in FIG.

FIG. 5 is an operation explanatory view of the embodiment shown in FIGS.

FIG. 6 is an overall configuration diagram schematically showing an embodiment of a deodorizing device according to the invention of claim 2.

7 is an electric circuit diagram showing a part of the electric control device shown in FIG.

FIG. 8 is an operation explanatory view of the embodiment shown in FIGS. 6 and 7.

FIG. 9 is a cross-sectional view showing another embodiment of the casing.

FIG. 10 is a cross-sectional view showing another embodiment of the casing.

[Explanation of symbols]

11 ... Casing, 11a ... Suction port, 11b ... Discharge port,
12 ... Catalyst, 13 ... Electrothermal heater (heating element), 14, 1
5, 19 ... Temperature sensitive tube (temperature detecting means), 16 ... Fan motor (blowing means), 30 ... Electric control device, 31, 32, 3
3 ... Temperature controller, 34 ... Timer, 34a ... Timer contact,
35 ... Relay, 35a ... Relay contact, 50 ... Refrigeration device,
51 ... Cooler, A1, A2 ... Deodorizing device.

Claims (2)

[Claims] 1. A casing having an inlet and an outlet,
In a deodorizing device provided with a catalyst provided inside the casing and a heating element which is disposed close to or in contact with the catalyst and generates heat by energization, temperature detecting means for detecting the temperature of the catalyst and the temperature detecting means. And an electric control device for controlling the energization of the heating element so that the detected temperature is maintained at a set temperature based on the detected temperature of
A cooling device of a refrigeration system, the operation of which is controlled by the electric control device, is provided at the discharge port of the casing, and the air discharged through the discharge port is cooled by the cooler. With the device, in a state where the detected temperature is maintained at a set temperature, the refrigeration apparatus is held in a stopped state when the heating element is energized, and the refrigeration apparatus is operated when the heating element is de-energized. A deodorizing device characterized in that 2. A casing having an inlet and an outlet,
In a deodorizing device provided with a catalyst provided inside the casing and a heating element which is disposed close to or in contact with the catalyst and generates heat by energization, temperature detecting means for detecting the temperature of the catalyst and the temperature detecting means. And an electric control device for controlling the energization of the heating element so that the detected temperature is maintained at a set temperature based on the detected temperature of
A cooling device of a refrigeration system, the operation of which is controlled by the electric control device, is provided at the discharge port of the casing, and the air discharged through the discharge port is cooled by the cooler. A deodorizing device characterized in that energization to the heating element is disabled for a predetermined time when the refrigerating device is started by the device.