JPH109964A - Temperature detector and suspended spore removing apparatus using the detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent erroneous operation even in a high temp. atmosphere. SOLUTION: A suspended spore removing apparatus has function incinerating spores contained in air by heating elements 21. A lower thermostat 51 is arranged on the suction side of a heating elements 21 low in temp. and an upper thermostat 52 is arranged on the exhaust side of the heating elements 21 so as to provide a predetermined distance. Air is sucked from a suction port by a natural convection and passed through the ducts 21a of the heating elements 21 to be discharged from an upper exhaust port 33. Since the lower thermostat 51 properly detects the temp. of the heating elements 21 even in the case of use in a high temp. atmosphere, the heating elements are not operated at a time of usual use. For example, in an abnormal state in which the exhaust port 33 is closed and the flow of air is obstructed, the lower thermostat 51 detects the head of heated air to cut off a power supply. The upper thermostat 52 is operated as an emergency one when the lower thermostat 51 gets out of order.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature detecting device and a device for removing suspended spores using the same. In detail, by installing a temperature sensor that detects the temperature of the heat generating part on the intake side with a low temperature, it detects an abnormality only when the device is used in an abnormal state and is overheated, so that it does not malfunction in a normal use state. The present invention relates to a temperature detecting device and a floating spore removing device using the same.

[0002]

2. Description of the Related Art Conventionally, a device having a heat generating portion is usually provided with a temperature detecting device for detecting an overheat and performing an emergency operation such as operation stop. For example,
As shown in FIG. 7, a heating element 1 is mounted inside a floating spore removal device 10 for removing spores floating in the air, for example, mold spores and bacteria, and an exhaust side of the heating element 1. A thermostat 5 that shuts off power when overheated is attached.

Since the ABS resin, which is the material of the cabinet 4, is thermally deformed at about 85 ° C., it is necessary to keep the temperature of the discharged air not to exceed 85 ° C. Therefore,
In the floating spore removing device 10, the operating temperature (heat sensing temperature) of the thermostat 5 is set to 80 ° C.

When the power is turned on, the heating element 1 is heated, and spores are incinerated when the air sucked from the air inlet 2 passes through the inside of the heating element 1 by natural convection. The air from which the spores have been removed is exhausted from the upper exhaust port 3 to the outside. The thermostat 5 detects the temperature of the air heated by the heating element 1.

For example, when the exhaust port 3 is closed by some external factor and the temperature detected by the thermostat 5 reaches 80 ° C., which is the operating temperature of the thermostat 5, the power supply to the heating element 1 is cut off. As a result, the temperature rise of the heating element 1 is stopped, and the deformation of the cabinet 4 and the failure of the device due to overheating are prevented.

[0006]

The operating temperature of the thermostat 5 shown in FIG. 7 is assumed to be, for example, a case where the exhaust port 3 of the apparatus 10 for removing floating spores is blocked by an external factor under abnormal use conditions. Is set.

[0007] However, the suspended spore removing device 10 is, for example, 4
When the thermostat 5 is used in a high-temperature atmosphere of about 0 ° C., the thermostat 5 easily reaches a predetermined operating temperature of 80 ° C. under the influence of the outside air temperature even in a normal use state. At this time, the cabinet 4 is deprived of heat by the external air and has not actually reached 85 ° C. at which thermal deformation occurs. Even in such a case, there is a problem that the power is frequently turned off by the operation of the thermostat 5 and the effect of removing the floating spores is reduced.

In view of the above, the present invention has been made to solve the above-mentioned problem, and detects an abnormality only when the apparatus is used in an abnormal state and is overheated, so that a malfunction does not occur in a normal use state. A temperature detecting device and a device for removing suspended spores using the same are proposed.

[0009]

According to a first aspect of the present invention, there is provided a temperature detecting device for detecting a temperature of a heat generating portion for heating passing air. A temperature sensor for detecting the temperature of the section is provided on the intake side of the heating section.

[0010] Even when the device equipped with the temperature detecting device is used in a high-temperature atmosphere, the temperature sensor is disposed on the intake side having a low temperature, so that the temperature of the heat-generating portion can be properly adjusted even in the high-temperature atmosphere. To detect. When the flow of air is hindered by some external factors, the internal temperature of the device rises sharply, and the temperature sensor detects not only the heat of the heating part but also the heat of the heated air, and detects an abnormal temperature rise. .

In the case where an emergency temperature sensor is also provided on the exhaust side of the heat generating portion, when the temperature sensor on the intake side fails, the temperature sensor on the exhaust side detects an increase in temperature.

According to a seventh aspect of the present invention, there is provided a floating spore removing apparatus for inhaling air passing through a heating section to incinerate and remove floating spores in the air, wherein a temperature sensor for detecting the temperature of the heating section is provided by a heating section. Is provided on the intake side.

[0013] Even when the apparatus for removing suspended spores is used in a high-temperature atmosphere, the temperature sensor is disposed on the low-temperature intake side, so that the temperature of the heat-generating portion can be properly detected even in a high-temperature atmosphere. When air flow is obstructed by some external factors, the internal temperature of the device rises sharply,
The temperature sensor receives not only the heat of the heat generating portion but also the heat of the heated air, detects an abnormal temperature rise, and performs an emergency operation such as power-off.

In the case where an emergency temperature sensor is also provided on the exhaust side of the heating section, when the temperature sensor on the intake side fails, the temperature sensor on the exhaust side detects a rise in temperature, and
An emergency operation such as power-off is performed.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a temperature detecting apparatus according to the present invention and a floating spore removing apparatus using the same will be described in detail with reference to the drawings.

FIG. 1 shows a configuration of a floating spore removing apparatus 20 using a temperature detecting apparatus according to the present invention. The floating spore removing apparatus 20 uses a heating element 21 to incinerate spores contained in the air, such as mold spores and bacteria.

The exterior of the suspended spore removing apparatus 20 is a hollow box-shaped case 2 made of ABS resin.
2 and a base 23 connected and fixed to the lower surface of the cabinet 22.

The base 23 comprises a flat base portion 23a and support portions 23b, 23b erected at both ends thereof. The cabinet 22 is mounted on the upper surfaces of both support portions 23b, 23b using screws. Fixed. A rectangular ventilation opening 26 is formed surrounded by the base portion 23a, the support portions 23b, 23b, and the cabinet 22.
The outside air is guided to an intake port 32 provided on the lower surface of the.

A push type power switch 37 is attached to the upper part of the cabinet 22. Three LEDs 37a to 37c are mounted on the upper part of the power switch 37. One LED 37a is lit red when the power is turned on, and the other two LEDs 37b and 37c are two temperature sensors activated during overheating as will be described later. In this embodiment, any one of the thermostats 51 and 52 is used. Lights according to the crab. In addition, a control board 34 (shown by a two-dot chain line) is attached near the upper inner side surface of the cabinet 22. The power switch 37 and other electronic components described above are mounted on the control board 34.

A plurality of slits are provided on the lower surface of the cabinet 22, and an intake port 32 is provided. The upper portion is formed to be curved, and a grill 36 having an arc-shaped cross section is fitted therein. Grill 36 is formed of polycarbonate, and a plurality of slits constitute exhaust port 33. A plurality of mounting bosses 36a, 36a (FIG. 2) are provided on the back of the grill 36.
And is fixed to the mounting plate portions 22a, 22a (FIG. 2) protruding from the side surface of the cabinet 22 with screws.

A heating element 2 is provided at the center of the inside of the cabinet 22.
1 is fixedly mounted. The heating element 21 is a rectangular parallelepiped block formed of a refractory material such as ceramic. Heating element 21
A large number of small-diameter ducts (passing holes) 21a for allowing air to pass therethrough are vertically penetrated. Duct 21a
, A resistance wire 39 for heating the heating element 21 is appropriately passed therethrough. Fixing frames 38 and 38 are attached along the outer periphery of the upper and lower portions of the heating element 21.

A heating element 2 is provided on the bottom inside the cabinet 22.
1 are fixedly provided. Step portions 41a, 4 are provided on opposite sides of the support portions 41, 41.
1a (FIG. 2) is provided, on which the heating element 21 is placed. Also, holding plates 42, 4 are provided on the upper surfaces of the support portions 41, 41.
2 are fixed by screws, and the holding plates 42, 42 are in contact with the upper surface and side surfaces of the upper frame 38 to hold the heating element 21 at a predetermined position. Auxiliary support portions 43, 43 are provided upright on the inner bottom surface of the cabinet 22.
To assist in position regulation of

As shown in FIG.
Is provided with a temperature detecting device for performing an emergency operation when overheating occurs. In this embodiment, the temperature detecting device includes two temperature sensors for shutting off power, for example, bimetal thermostats 51 and 52. With bimetal type, two kinds of metal plates with different coefficients of thermal expansion are bonded together,
When the temperature increases, the metal having a high expansion coefficient expands and bends, so that the contacts are separated and the current is cut off.

The lower thermostat 51 is disposed at a predetermined distance from the lower surface of the heating element 21, that is, the air suction side, and the upper thermostat 52 is disposed at a predetermined distance from the upper surface of the heating element 21, that is, the air discharging side. It is arranged at.

The operating temperature of the lower thermostat 51 (heat sensing temperature at which power is cut off) is set to 70.degree. This is a temperature at which the lower thermostat 51 operates before reaching an 85 ° C. temperature at which an ABS resin, which is a material of the cabinet 22, is thermally deformed in an abnormal state, for example, when the exhaust port 33 is closed. . The operating temperature of the lower thermostat 51 is set lower than 85 ° C. because the temperature of the heating element 21 is detected by detecting the heat of the low-temperature air before being heated by the heating element 21. It is.

The lower thermostat 51 is arranged at a predetermined distance from the heating element 21 so as not to operate in a normal use state. In other words, when the heater is disposed close to the heating element 21, the lower thermostat 51 easily receives the heat of the air and the heat of the heating element 21 when used in a high-temperature atmosphere, so that the lower thermostat 51 easily operates. May be reached, and the energization may be frequently interrupted. On the other hand, when the heating element 21 is disposed farther than a predetermined distance from the heating element 21, heat when the heating element 21 is overheated is not easily transmitted, so that the lower thermostat 51 has the operating temperature of 70%.
It is possible that the temperature does not reach ℃ and the cabinet 22 does not operate even if the cabinet 22 undergoes thermal deformation in an abnormal state.

Therefore, by arranging the lower thermostat 51 at a predetermined distance from the heating element 21 in consideration of the above, when the lower thermostat 51 is in an abnormal state and the cabinet 22 is thermally deformed. Only in the normal use state until the outside temperature reaches a predetermined temperature at which the operation is to be compensated, for example, 40 ° C.

The operating temperature of the upper thermostat 52 is 1
It is set to 10 ° C. The reason why the operating temperature of the upper thermostat 52 is set relatively high is that the lower thermostat 51 is operated as an emergency when the lower thermostat 51 fails.

The lower thermostat 51 is of a type that returns manually, and the upper thermostat 52 is used.
Is an emergency type, which detects that the device is in an abnormal state, and is of a type which cannot be manually restored once activated.

FIG. 3 shows details of a mounting portion of the lower thermostat 51. As shown in FIG.
Column-shaped mounting bosses 54, 54 are erected on a beam portion 53 forming a slit on the inner bottom surface of FIG. 1 and screw holes 54a, 54a are provided on the upper surfaces thereof. Further, a cylindrical projection 55 for pressing the reset button 51a of the lower thermostat is formed between the mounting bosses 54, 54. Further, the tip of the beam portion 53a provided with the columnar projection 55 is not connected to another beam portion 53, and is elastically bendable.

The mounting flange portion 51b of the lower thermostat 51 is mounted on the upper surfaces of the mounting bosses 54, 54.
At this time, the heat sensing surface 51c of the lower thermostat 51
Faces upward and faces the heating element 21 (FIG. 2).

A cover 56 is placed on the heat sensing surface 51c. The cover 56 is made of a material having low heat conductivity and high heat resistance, for example, polycarbonate, and has a shape that covers the entire surface of the mounting flange portion 51b including the heat sensing surface 51c of the lower thermostat 51. The lower thermostat 51 and the cover 56 are fixed to the upper surfaces of the mounting bosses 54, 54 by screws 57, 57.

As shown in FIG. 4, the cover 56 is covered on the heat sensing surface 51c of the lower thermostat 51. The cover 56 prevents the air from directly contacting the heat sensing surface 51c of the lower thermostat 51, as will be described later, and prevents the heat from being taken away by the passing air to reliably detect overheating of the heating element 21. Is to do so.

As shown in FIG. 2, the upper thermostat 52 is fixed to two mounting bosses 61, 61 projecting downward from the grill 36 by screws. Here, the heat sensing surface of the upper thermostat 52 is lower, that is, the heating element 2
1. The upper thermostat 5
The heat sensing surface of No. 2 is exposed. Although not shown, a posture sensor for turning off the power when the apparatus falls down is attached.

The operation of the suspended spore remover 20 and the thermostats 51 and 52 configured as described above is shown in FIG.
This will be described with reference to FIG. When the power is turned on by operating the power switch 37 (FIG. 1), the resistance wire 39 is energized, and the heating element 21 is heated to about 350 ° C. This warms the air and causes natural convection in the room where the device is installed.

Air is drawn in from the intake port 32 on the lower surface of the cabinet 22 by natural convection, passes through the duct 21 a of the heating element 21, and is discharged from the upper exhaust port 33.
When the air passes through the duct 21a of the heating element 21, spores in the air, such as mold spores and bacteria, are incinerated by the heat of the heating element 21. By operating the suspended spore remover 20 indoors for a certain period of time, spores in the air are incinerated and removed.

Next, the operation of the thermostats 51 and 52 of the suspended spore remover 20 will be described. Even when the floating spore removing apparatus 20 is used in an atmosphere at a high temperature, for example, 40 ° C., the upper thermostat 52 has an operating temperature of 1
Since it is set high at 10 ° C., it does not operate during normal operation. On the other hand, although the lower thermostat 51 is set at a low heat sensing temperature of 70 ° C., the lower thermostat 51 is disposed at a lower temperature on the intake side at a predetermined distance from the heating element 21, and thus does not operate when used in a normal state. .

Since the cover 56 covers the heat sensing surface 51c (FIG. 3) of the lower thermostat 51, the passing air does not directly contact the heat sensing surface 51c. Further, since the cover 56 is made of polycarbonate having a low thermal conductivity, the heat sensing surface 51c is hardly cooled even when air contacts the cover 56. Therefore,
The lower thermostat 51 does not lose heat due to the passing air, and can reliably detect overheating of the heating element 21.

In the floating spore removing device 20, unlike the conventional floating spore removing device 10 (FIG. 7), the lower thermostat 51 is located at a predetermined distance from the heating element 21 on the intake side, that is, on the side with a lower temperature. Therefore, the temperature rise of the heating element 21 can be properly detected. Therefore, even in a high-temperature atmosphere, the power supply is not frequently turned off by the operation of the thermostat, and it is possible to prevent a reduction in the effect of removing the floating spores.

As shown in FIG. 6, when the air outlet 33 of the floating spore removing device 20 is blocked by some external factor and the flow of air is hindered, the internal temperature of the floating spore removing device 20 rises rapidly. I do. In this case, the heated air flows to the lower thermostat 51 without being released. As a result, the heating element 21 is attached to the lower thermostat 51.
The heat of the heated air as well as the heat of the heated air is applied to reach a predetermined operating temperature and turn off the power. The upper thermostat 52 operates as an emergency when the lower thermostat 51 fails.

Thus, by sensing not only the heat of the heating element 21 but also the heat of the heated air, abnormal overheating of the apparatus can be reliably detected. Further, since two thermostats 51 and 52 are provided, even if one fails, the other can detect overheating of the device.

When the thermostat 51 or 52 is operated and the power is cut off, the corresponding LED 37b or 37c is turned on as shown in FIG. 1, so that the user can determine which thermostat 51 or 52 is activated. You can know.

When the lower thermostat 51 operates, the beam portion 53a is bent by pressing it from below as shown in FIG. 4, and the reset button 51a of the lower thermostat 51 is pressed by the cylindrical projection 55. Thereby, the lower thermostat 51 returns, and the floating spore removing device 20 can be operated. In addition, since the upper thermostat 52 shown in FIG. 2 is for emergency use, it cannot be returned manually.

Further, the temperature detecting device according to the present invention can be applied not only to the above-mentioned floating spore removing device 20 but also to other devices having a heating element, such as a fan heater and a stove. When applied to a fan heater, a temperature sensor is arranged on the intake side of the combustion chamber, which is a heat generating portion, to detect the temperature of the combustion chamber. In this case, the intake port and the exhaust port may be provided on the side of the apparatus, or the air may be forcibly sucked by a fan.

Thus, even when the fan heater is used in a high-temperature atmosphere, an emergency operation such as an operation stop due to the thermostat is not erroneously performed.
On the other hand, when the exhaust port of the fan heater is closed and the inside of the apparatus is abnormally heated, the temperature of the air heated in the combustion chamber is detected, and an emergency operation such as operation stop is performed.

[0046]

As described above, the first aspect of the present invention is a temperature detecting device for detecting the temperature of a heat generating portion for heating passing air, wherein the temperature sensor detects the temperature of the heat generating portion. Is provided on the intake side of the heat generating portion.

Therefore, according to the present invention, since the temperature of the heating element is detected by the temperature sensor provided on the intake side having a low temperature, an abnormality is detected only when the apparatus is overheated, and the apparatus is operated in a high temperature atmosphere. However, since no abnormality is detected in a normal use state, an emergency operation such as power-off when overheating can be appropriately performed.

When the temperature sensors are arranged on both the intake side and the exhaust side of the heat generating portion, even if a failure occurs in the intake side temperature sensor, an abnormal temperature change is detected by the exhaust side temperature sensor. be able to.

Further, when the heat sensing surface of the temperature sensor on the intake side is covered with a cover having low thermal conductivity, the air does not come into direct contact with the heat sensing surface. Thus, overheating of the heat generating portion can be properly detected.

According to a seventh aspect of the present invention, there is provided a floating spore removing device for inhaling air passing through a heat generating portion to incinerate and remove floating spores and the like in the air, wherein a temperature sensor for detecting the temperature of the heat generating portion is provided. Is provided on the intake side.

Therefore, since the heat of the heating element is detected by the temperature sensor provided on the intake side of the heating section having a low temperature, an emergency operation due to the influence of the outside air temperature even in a high-temperature atmosphere, for example, a malfunction of the power cut-off. And the effect of removing suspended spores can be continued for a long time.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a floating spore removing device 20 to which a temperature detecting device according to the present invention is applied.

FIG. 2 is a sectional view showing the positions of thermostats 51 and 52.

FIG. 3 is a perspective view showing a configuration of a lower thermostat 51;

FIG. 4 is a side view showing an attached state of a lower thermostat 51.

FIG. 5 is a cross-sectional view showing the flow of air during normal operation of the suspended spore removal device 20.

FIG. 6 is a cross-sectional view showing the flow of air when the exhaust port 33 is closed.

FIG. 7 is a cross-sectional view showing a configuration of a conventional example.

[Explanation of symbols]

 1,21 Heating Element 2,32 Inlet 3,33 Exhaust 4,22 Cabinet 5 Thermostat 21a Duct 39 Resistance Wire 51 Lower Thermostat 51a Reset Button 51b Mounting Flange 51c Heat Sensing Surface 52 Upper Thermostat 55 Cylindrical Projection 56 cover

Claims (13)

[Claims] 1. A temperature detecting device for detecting a temperature of a heat generating portion for heating passing air, wherein a temperature sensor for detecting a temperature of the heat generating portion is provided on an intake side of the heat generating portion. Temperature detector. 2. A temperature detecting device for detecting a temperature of a heat generating portion for heating passing air, comprising a plurality of temperature sensors for detecting a temperature of the heat generating portion, wherein one temperature sensor is provided by the heat generating portion. A temperature sensor disposed on the exhaust side of the heat-generating portion, the temperature detection device being disposed on the intake side of the device. 3. The temperature detecting device according to claim 1, wherein a cover having a low thermal conductivity is covered on a heat sensing surface of the temperature sensor disposed on an intake side of the heat generating portion. 4. The temperature detecting device according to claim 1, wherein the temperature sensor is a thermostat. 5. The temperature detecting device according to claim 1, wherein a heat sensing surface of the temperature sensor faces the heat generating portion. 6. A heat sensing temperature of a temperature sensor arranged on an exhaust side of the heating unit is set higher than a heat sensing temperature of a temperature sensor arranged on an intake side of the heating unit. The temperature detecting device according to claim 2. 7. A floating spore removing device for incinerating and removing floating spores and the like in air by passing inhaled air through a heat generating portion, wherein a temperature sensor for detecting a temperature of the heat generating portion is provided on an intake side of the heat generating portion. An apparatus for removing suspended spores. 8. A floating spore removing apparatus for incinerating and removing floating spores and the like in air by passing inhaled air through a heating section, the apparatus comprising a plurality of temperature sensors for detecting the temperature of the heating section. Is disposed on the intake side of the heating section, and another temperature sensor is disposed on the exhaust side of the heating section. 9. The apparatus for removing floating spores according to claim 7, wherein a cover having a low thermal conductivity is covered on a heat sensing surface of the temperature sensor disposed on the intake side of the heat generating portion. . 10. The apparatus for removing suspended spores according to claim 7, wherein the temperature sensor is a thermostat. 11. The apparatus for removing floating spores according to claim 7, wherein the heat sensing surface of the temperature sensor faces the heat generating portion. 12. A heat sensing temperature of a temperature sensor arranged on an exhaust side of the heat generating part is set higher than a heat sensing temperature of a temperature sensor arranged on an intake side of the heat generating part. The apparatus for removing suspended spores according to claim 8. 13. The floating device according to claim 7, wherein a passage hole through which air is passed is provided in the heat generating portion, and the heat generating portion is heated by a resistance wire passed through the through hole. Spore remover.