JPH08275695A - Heating apparatus for aquarium of ornamental fish - Google Patents

Abstract

PURPOSE: To obtain a heating apparatus for an aquarium for ornamental fish, having a heat-conduction path made of a material having higher heat- conductivity than the material constituting the housing and extended over a specific region of the housing and free from the problem of fire hazard caused by the abnormal heating even if the aquarium is fallen down and broken by earthquake, etc. CONSTITUTION: A heater 11 and a temperature-sensing current-controlling member 12 such as a thermostat is built in a housing 10 to be placed in water. A heat-conduction path 20 made of a material (e.g. metal) having higher heat- conductivity than the material constituting the housing 10 is extended from a part corresponding to the heater-installing position of the housing made of ceramic, quartz, etc., to a part corresponding to the installation position of the temperature-sensing current-controlling member 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heater device used in an aquarium for appreciating fish, and more particularly to a heater device provided with a safety mechanism for preventing abnormal heating.

[0002]

2. Description of the Related Art When raising ornamental fish in an aquarium, the water temperature in the aquarium must be kept within a specific temperature range. For this reason, installation of a heater device to maintain the water temperature was indispensable in the aquarium for viewing fish.

As this kind of heater device, a heater is generally incorporated in a housing to be installed in water and the heater is operated by energization. In this case, the heater energization is controlled by a thermostat to keep the water temperature in a specific temperature range. This thermostat (thermostat body in case of bimetal type, sensor in case of electronic type) is different from the heater device. It was housed in another part of the aquarium or in the heater device.

On the other hand, a person skilled in the art would provide a temperature breaker, such as a breaker or a thermal fuse, in the heater device in order to stop the energization when the heater device abnormally heats for some reason such as the thermostat not working. This is where you can easily think.

Further, in this kind of heater device, the material forming the housing containing the heater does not cause rust due to long-term immersion in water, and is damaged by a sudden temperature change due to the requirement of durability as an electric product. It is required not to do so, and is generally made of ceramic or quartz.

FIG. 4 shows an example of this kind of heater device. In the figure, reference numeral 1 is a heater device, 10 is a housing, 11 is a heater, and 12 is a thermostat or a temperature breaker.

[0007]

In the heater device of the prior art described above, the heat generated by the heater device is transferred to the thermostat through the water in the water tank, and the energization is stopped. Abnormal heating above the value did not normally occur.

Further, assuming a heater device having a temperature breaker provided in the heater device, if the thermostat fails, the heat generated from the heater device is also transferred to the temperature breaker via the water in the water tank. ,
The situation of abnormal heating cannot be expected under normal circumstances.

By the way, if the water tank falls or is destroyed due to an earthquake or the like, the heater device is thrown out into the room. In this case, since the water in the water tank will flow out, of the above-mentioned conventional heater devices,
As for the thermostat installed in another place in the water tank different from the heater device, the water temperature serving as the medium cannot be detected, and the heater device is abnormally heated due to the continuation of the energized state.

On the other hand, among the heater devices of the prior arts described above, regarding the thermostat housed in the heater device, theoretically, the high heat due to abnormal heating finally corresponds to the heater installation portion via the housing. Since it will be transmitted to the part corresponding to the part where the thermostat is installed, at first glance it seems that the above situation cannot occur. However, the ceramic or quartz that constitutes the housing has a very low thermal conductivity, and the speed of heat transfer is extremely slow compared to the case where it is transferred via water, and by the time heat is transferred to the location corresponding to the thermostat installation part. The temperature of the part corresponding to the part where the heater is installed in the housing exceeds the ignition point. Therefore, in this case, if the thrown-out heater device is in contact with a combustible material, there is a risk of causing a fire.

The above circumstances are exactly the same when a heater device having a temperature breaker provided in the heater device is assumed.

[0012]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heater device which solves the above problems of the prior art. That is, the heater device of the present invention is a heater device in which a heater and a thermostat or a temperature breaker are housed in a housing to be installed in water. In the heater device, a part corresponding to the heater installation part of the housing corresponds to a part corresponding to the thermostat or temperature breaker installation part. A heat conducting path made of a material having a higher thermal conductivity than that of the material forming the housing is provided.

For convenience of explanation, the thermostat (thermostat body in the case of a bimetal type; sensor in the case of an electronic type) and temperature breaker described above are generically referred to as "temperature detecting and energizing control member" in this specification. I will do it.

Therefore, in the heater device of the present invention, the heat conduction path made of a material having a higher thermal conductivity than the material forming the housing is provided from the portion corresponding to the heater installation portion of the housing to the portion corresponding to the temperature detection energization control member. Therefore, when abnormal heating is performed, high heat is quickly transmitted to the location corresponding to the temperature detection energization control member installation portion via this heat conduction path, and energization is stopped,
Even when the heater device is in the air, the temperature breaker has a function to operate before the portion corresponding to the heater installation portion reaches the ignition temperature.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A specific embodiment of the present invention will be described below with reference to the accompanying drawings. (First Embodiment) FIG. 1 is a view showing a first embodiment of the heater device of the present invention. In the figure, reference numeral 1 is a heater device. In this heater device, a heater 11 is housed in a cylindrical housing 10 made of ceramic or quartz.
Reference numeral 12 in the figure denotes a temperature detection energization control member housed in the housing 10, and is assumed to be, for example, a thermostat, a breaker, or a temperature breaker including a temperature fuse.

Reference numeral 20 in the figure denotes a heat conducting path provided in the housing 10. In this embodiment, a tube made of metal (for example, aluminum or iron) having a higher heat conductivity than ceramic or quartz is used. And is wound around the surface of the housing so as to reach at least the portion corresponding to the heater installation portion and the portion corresponding to the temperature sensing and energization control member installation portion.

(Second Embodiment) FIG. 2 is a view showing a second embodiment of the heater device of the present invention. In the figure, reference numeral 1 is a heater device, the configuration of which is the same as that of the first embodiment.

Reference numeral 20 in the figure denotes a heat conducting path provided in the housing 10. In this embodiment, a strip-shaped piece made of metal is also installed at least at a portion corresponding to the heater installation portion to install a temperature detection and energization control member. It is constructed by attaching to the housing surface so as to reach a portion corresponding to the portion.

(Third Embodiment) FIG. 2 is a view showing a third embodiment of the heater device of the present invention. In the figure, reference numeral 1 is a heater device, the configuration of which is the same as that of the first embodiment.

Reference numeral 20 in the drawing denotes a heat conduction path provided in the housing 10. In this embodiment, paint containing metal powder is applied to at least a portion corresponding to the heater from the portion corresponding to the temperature detection and energization control member installation portion. It is constructed by coating the surface of the housing so as to reach the corresponding location.

(Fourth Embodiment) FIG. 5 is a view showing a heater device according to a fourth embodiment of the present invention. In the figure, reference numeral 1 is a heater device. In this heater device, a heater 11 is housed in a cylindrical housing 10 made of ceramic or quartz. In addition, reference numeral 11A in the drawing is an insulating insulator that is mounted on the heater 11. In the figure, reference numeral 12 is a temperature detection energization control member housed in the housing 10, and is assumed to be, for example, a thermostat, a breaker, or a temperature breaker including a temperature fuse. In this embodiment, it is separated from the heater 11 by the thermal partition 1A. Are housed in the housing 10.

In the figure, reference numeral 20 is a heat conducting path accommodated in the housing 10, and one end of which is brought into contact with the temperature sensing / energizing control member 12, which is a metal having a higher heat conductivity than ceramic or quartz (for example, aluminum). It is configured by bringing a rod body made of iron or the like) close to the vicinity of the heater installation portion. In this case, the rod body to be the heat conduction path 20 is bent in a U shape so that the bottom portion of the U shape is brought into contact with the temperature sensing and energization control member 12 and the pair of arm portions sandwich the heater 11. Has been extended to.

(Fifth Embodiment) FIG. 6 is a view showing a heater device according to a fifth embodiment of the present invention. In the figure, reference numeral 1 is a heater device. In this heater device, a heater 11 is housed in a cylindrical housing 10 made of ceramic or quartz. In addition, reference numeral 11A in the drawing is an insulating insulator that is mounted on the heater 11. In the figure, reference numeral 12 is a temperature detection energization control member housed in the housing 10, and for example, a thermostat, a breaker or a temperature breaker composed of a temperature fuse is assumed, and in this embodiment, the heater 11 is sandwiched in the housing 10. A pair is arranged at both ends in the longitudinal direction. In addition, reference numerals 1A and 1A in the drawing are thermal partition walls for isolating the temperature detection / energization control members 12 and 12 from the heater 11.

In the figure, reference numeral 20 is a heat conducting path provided in the housing 10, and the pair of temperature detecting and energizing control members 1 are provided.
2 and 12, both ends of which are in contact with each other, and the middle part of a rod made of a metal (for example, aluminum or iron) having a higher thermal conductivity than ceramic or quartz is brought close to the heater installation part. To be done. In addition, here
The lead wire L1 connected to the power supply is connected to one end of the heater 11, the other end of the heater 11 is connected to one end of the heat transfer path 20 via the lead wire L3, and the other end of the heat transfer path 20 is connected to the power supply. The heat conducting path 20 and the electric path are shared by being connected to the lead wire L2 connected to.

[0025]

According to the present invention having the above structure,
When the heater device abnormally heats, high heat is quickly transmitted to the location corresponding to the temperature measurement energization control member installation part via the heat conduction path, and the energization stops, so even when the heater device is in the air, the heater installation part There is an effect that the temperature detection and energization control member operates before the portion corresponding to the above reaches the ignition temperature. Therefore, according to the present invention, due to an earthquake or the like,
Even if the water tank falls or is destroyed, a heater device that does not cause a fire due to abnormal heating will be realized.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a first embodiment of a heater device of the present invention.

FIG. 2 is a side view of a second embodiment of the heater device of the present invention.

FIG. 3 is a side view of a third embodiment of the heater device of the present invention.

FIG. 4 is a partially cutaway side view of a conventional heater device.

FIG. 5 is a partially cutaway side view of a fourth embodiment of the heater device of the present invention.

FIG. 6 is a partially cutaway side view of a heater device according to a fifth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heater device 10 Housing 11 Heater 12 Temperature measurement energization control member 20 Heat conduction path

Claims (9)

[Claims] 1. In a heater device in which a heater and a temperature detection energization control member are built in a housing to be installed in water, the housing is extended from a portion corresponding to the heater installation part of the housing to a portion corresponding to the temperature detection energization control member installation part. A heater device for an ornamental fish tank, which is provided with a heat conduction path made of a material having a higher thermal conductivity than the constituent materials. 2. The heater device for an ornamental fish tank as claimed in claim 1, wherein the temperature detection / energization control member is a thermostat. 3. The heater device for an ornamental fish tank as claimed in claim 1, wherein the temperature detection / energization control member is a temperature breaker. 4. The heater device for an ornamental fish tank according to claim 1, wherein a heat conduction path made of metal is applied to a housing made of ceramic or quartz. 5. The heater device for an ornamental fish tank according to claim 4, wherein the heat conduction path is formed by winding a cylindrical metal tube around the housing. 6. The heater device for an ornamental fish tank according to claim 4, wherein the heat conduction path is formed by attaching a strip-shaped metal piece to the housing. 7. The heater device for an ornamental fish tank according to claim 4, wherein a heat conducting path is formed by applying a paint containing metal powder to the housing. 8. A rod body made of a material having a higher thermal conductivity than that of the material forming the housing is housed in the housing with one end in contact with the temperature-measuring / energizing control member, and the other end of the rod body is a heater in the housing. The heater device for an aquarium for aquarium fish according to claim 1, wherein a heat conduction path is provided by bringing the heat conduction path close to the installation portion. 9. A rod body made of a material having a higher thermal conductivity than the material forming the housing, wherein a pair of temperature sensing and energization control members are arranged at both ends of the housing in the longitudinal direction with the heater interposed therebetween.
2. The watching fish aquarium according to claim 1, wherein both ends thereof are brought into contact with these temperature detection and energization control members to be housed in a housing, and a heat conducting path is formed by bringing an intermediate portion of the rod body close to a heater installation portion. Heater device.