JPH1062268A - Hot water heater for ornamental fish - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent abnormal rise in the temperature of a heater by providing an abnormal temperature detection means electrically connected in parallel to a heating wire of the heater and a current cutting means on a power source line of the heating wire. SOLUTION: A heating wire 405 and an abnormal temperature detection means 406 connected in parallel to the heating wire 405 are arranged in a heater body 401. A current cutting means 407 comprising a current fuse is interposed in one electric wire 403. The heater body 401 is designed to attain a temperature of 150 deg.C, for instance, under water. Now when the heater body 401 is not set under water, the heater body 401 fails to radiate heat, inevitably causing an abnormal temperature exceeding 150 deg.C. If the set detection temperature of the abnormal temperature detection means 406 is set at 200 deg.C or 300 deg.C, for instance, the temperature is detected by the abnormal temperature detection means 406 and a short-circuiting occurs at both ends of the heating wire 405 to let an overcurrent flow. As a result, the fuse of the current cutting means 407 burns out to cut the current to the heating wire 405, thereby preventing the generation of abnormal heat in the heater body 401.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warm water for ornamental fish, which is provided with an abnormal temperature rise prevention function including an empty boiler for a heater itself installed in an aquarium for breeding ornamental fish such as tropical fish. It relates to a heater.

[0002]

2. Description of the Related Art When rearing ornamental fish such as tropical fish in an aquarium, it is common to use an ornamental fish breeding apparatus 1 as shown in FIG. The whole apparatus 1 is composed of a water tank 2, a temperature controller 3, a hot water heater 4, and a water temperature sensor 5, and the hot water heater 4 and the water temperature sensor 5 are respectively arranged in water 7 in the water tank 2, and Each is electrically connected to the controller 3.

When disposing the water temperature sensor 5 in the water tank 2, the water temperature sensor 5 is fixed to the inner wall surface of the water tank 2 substantially perpendicularly to the water surface W using a suction cup 6 called kiss rubber. Also,
The hot water heater 4 is disposed behind objects such as sand 8 and accessories (not shown) in the water tank 2.

[0004] The ornamental fish breeding apparatus 1 configured as described above.
In, the current water temperature is detected by the water temperature sensor 5,
By controlling the hot water heater 4 to be turned on and off by the temperature controller 3 to operate (heat), the water temperature can be maintained at a preset temperature or temperature range.

[0005]

In the conventional ornamental fish breeding apparatus 1 described above, although the temperature of the water 7 in the water tank 2 can be maintained and managed, for example, sudden destruction of the water tank 2 or earthquake When the water 7 in the water tank 2 leaks out due to a fall of the water tank 2 due to a disaster such as the above, it is not possible to prevent the hot water heater 4 from being fired empty, which may cause an accident such as a fire. There was.

The present invention prevents an abnormal rise in temperature of a hot water heater when water in a water tank flows out, and an abnormal rise in temperature of a heater due to misuse of a hot water heater other than underwater, that is, prevention of empty heating of a hot water heater. The main purpose is to prevent the water temperature itself from rising abnormally, and to detect this abnormal temperature rise state when the temperature of the hot water heater rises abnormally. It is another object of the present invention to provide an aquarium fish hot water heater having an abnormal temperature rise prevention function for stopping a heater function.

[0007]

Means for Solving the Problems The present invention is intended to achieve the above-mentioned object, and a structural feature thereof is a heating water heater for aquarium fish which is used by being immersed in water. An abnormal temperature detecting means electrically connected in parallel to the power supply line and a current interrupting means interposed in one of the power supply lines connected to the heating wire to provide a function of preventing abnormal heating of the heater. I have had it.

In the present invention, examples of aquarium fish hot water heaters include commercially available quartz heaters, ceramic heaters, cord heaters and panel heaters. Of these, a quartz heater is a heater in which a heating wire such as a nichrome wire or an iron chrome wire is placed in a test tubular glass tube, and quartz sand is sealed around the heating wire. It refers to a heater that generates heat, and the ceramic heater refers to a cylindrical heater in which the periphery of a heating wire is directly covered with ceramic.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an electric basic configuration of an ornamental fish hot water heater according to the present invention.
The whole of the ornamental fish hot water heater 40 is a heater body 401 which is electrically insulated, for example, formed of a cylindrical exterior body.
And a pair of electric wires 402 and 403 which are power supply lines, and a plug 404. The plug 404
Is connected to a commercial AC power supply 100 V or 200 V via an outlet of the temperature controller 3 as shown in FIG.

In the heater body 401, a heating wire 405 is provided.
And an abnormal temperature detecting means 406 connected in parallel to one end and the other end of the heating wire 405, and a current interrupting means 407 comprising a current fuse is interposed in one of the electric wires 403. It is. Note that the current interrupting means 407
Can be provided in the plug 404.

In such a basic configuration, the heater main body 401 of the hot water heater 40 has a certain upper limit temperature, for example, about 150 ° C. when the main body temperature is immersed in water, because the temperature of the main body is radiated to water. Designed.
For this reason, when the heater main body 401 is operating in water, the abnormal temperature detecting means 406 does not detect the abnormal temperature, so that the heater 40 can be normally operated.

Next, the water 7 has flowed out of the water tank 2 when the heater body 401 of the ornamental fish hot water heater 40 is not put in the water or when it is installed in the water tank 2 in FIG. Such a state will be described.

In such a state, the heater body 4
No. 01 has an abnormal temperature exceeding 150 ° C. because heat cannot be released to water. Therefore, if the detection set temperature of the abnormal temperature detecting means 406 is set to a temperature exceeding 150 ° C., for example, 200 ° C. or 300 ° C., the abnormal temperature detecting means 406 detects the temperature, and both ends of the heating wire 405 are electrically connected. Forcibly short-circuit to Then, an overcurrent flows through the abnormal temperature detecting means 406, and the fuse of the current interrupting means 407 is blown (blown).
5 will be interrupted. Therefore, abnormal heat generation of the heater main body 401 due to idle heating is prevented.

Further, depending on the temperature conditions set for the abnormal temperature detecting means 406, when the water temperature rises abnormally, both ends of the heating wire 405 are forcibly electrically short-circuited. An overcurrent is passed through the heating wire 40 to disconnect (melt) the fuse of the current interrupting means 407.
Since the current to 5 can be cut off, it is also possible to prevent an abnormal water temperature that does not match the habitat conditions when the appreciation fish is a tropical fish.

FIG. 1 shows a basic structure in which the abnormal temperature detecting means 406 is connected between both ends of the heating wire 405.
As shown in FIG. 2, the abnormal temperature detecting means 406 is connected to the heating wire 40.
5 and one end of the heating wire 405 may be connected.

FIGS. 3 to 6 show specific examples of the abnormal temperature detecting means 406. FIG.

FIG. 3 shows a case in which a bimetal 406A is used as the abnormal temperature detecting means 406. When the temperature rises abnormally, the bimetal 406A is deformed and comes into contact with the contact to be in a conductive state, and both ends of the heating wire 405 are electrically connected. Automatic short circuit.

FIG. 4 shows a case where a thermal reed switch 406B is used as the abnormal temperature detecting means 406.
When the thermal reed switch 406B detects an abnormal temperature, the thermal reed switch 406B is turned on, and both ends of the heating wire 405 are electrically automatically short-circuited.

FIG. 5 shows a case where a combination of a thermal reed switch 406B, a resistor R and a triac TR is used as the abnormal temperature detecting means 406. When the thermal reed switch 406B detects an abnormal temperature, the thermal reed switch 406B becomes conductive. As a result, the gate current of the triac TR flows, and the triac TR
, And both ends of the heating wire 405 are automatically electrically short-circuited.

FIG. 6 uses a temperature-sensitive switch 406C made of a shape memory alloy as the abnormal temperature detecting means 406. When the temperature-sensitive switch 406C detects an abnormal temperature, the temperature-sensitive switch 406C is turned on, and the heating wire 4C is turned on.
05 is electrically short-circuited automatically.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a warm water heater 4 for appreciation fish according to the present invention.
0 will be described with reference to FIG.
As shown in the schematic longitudinal sectional view of FIG.
7 is mainly composed of a cylindrical ceramic tube 408. As shown in FIG. 7 (A) as viewed from the plane, the heating wire 405 and the abnormal temperature One end of the ceramic tube 408 containing the detecting means 406 is provided with a shielding plate 409 made of ceramic paper, a partition plate 410 made of heat-resistant silicon resin, a filled silicon resin 411, and a rubber externally fitted to the end of the tube. And a cap 412 made of the same.

In the ceramic tube 408, a mica plate 413
A heating wire 405 that is U-turned with an interposition therebetween and an abnormal temperature detecting means 406 connected in parallel to the heating wire 405 are arranged, and the insulating sand 4 made of white dragon stone or the like is provided.
14 is enclosed.

A power cord 415 having electric wires 402 and 403 connected to the heating wire 405 is led out from the other end of the ceramic tube 408. The other end of the ceramic tube 408 is connected to a rubber stopper 416 fitted in the tube. And a rubber cap 4 externally fitted with the filled epoxy resin 417
18 and sealed.

The power cord 415 is integrated with the plug 404. Inside the plug 404, as one of the electric wires 402 or 403, as shown in FIG. Fuse is incorporated. As shown in FIG. 7C, the plug 404 has a fuse mounting portion 4043 provided on the surface having the blades 4041 and 4042 of the plug, and the plug cannot be connected to the outlet of the temperature controller 3 unless a fuse is inserted. ,
Further, it is preferable to prevent the fuse from being replaced unless the plug 404 is removed from the outlet from the viewpoint of preventing danger. In this case, the current interrupting means 407 has an appropriate structure capable of generating a press-contact force with the fuse mounting portion 4043, such as a dry battery holder, in order to facilitate the attachment and detachment of the fuse mounting portion 4043. It is preferable to attach it to the plug 404.

In the figure, 419 in the ceramic tube 408 is a crimp terminal, 420 is a polyester tape, and 421 is a glass tube. Also,
In the power supply cord 415, 422 indicates a suction cup called a kiss rubber, and 423 indicates a rated seal.

[0026]

As described above, the present invention relates to a warm water heater for water fish which is used by being put into water.
Prevention of abnormal heating of the heater consisting of abnormal temperature detecting means electrically connected in parallel to the heating wire of the heater and current interrupting means provided in one of the power supply lines connected to the heating wire Since the function is provided, when the temperature of the heater becomes abnormal, the abnormal temperature rise prevention function of the heater is activated to prevent the temperature of the heater from being abnormally increased, such as in the case of idling.

Also, depending on the temperature condition set for the abnormal temperature detecting means, the current to the heating wire can be cut off when the water temperature rises abnormally, so that if the ornamental fish is a tropical fish, It is also possible to prevent an abnormal water temperature that does not meet the conditions beforehand.

Further, the function of preventing abnormal heating of the heater comprising the abnormal temperature detecting means and the current interrupting means can be obtained with a simple structure, and the abnormal temperature detecting means can be built in the heater main body. Since the shutoff means can also be provided in the power supply line or in the plug, an inexpensive warm water heater for ornamental fish can be provided.

[Brief description of the drawings]

FIG. 1 is an electrical basic configuration diagram of an ornamental fish hot water heater according to the present invention.

FIG. 2 is a diagram showing a modification of the electric basic configuration diagram of the ornamental fish hot water heater shown in FIG. 1 according to the present invention.

FIG. 3 is a diagram showing that a bimetal is used for the abnormal temperature detecting means 406 according to the present invention.

FIG. 4 is a diagram showing that a thermal reed switch is used for the abnormal temperature detecting means 406 according to the present invention.

FIG. 5 is a diagram showing that the abnormal temperature detecting means 406 according to the present invention is composed of a thermal reed switch, a resistor, and a triac.

FIG. 6 is a diagram showing that a temperature-sensitive switch made of a shape memory alloy is used for the abnormal temperature detecting means 406 according to the present invention.

FIG. 7 shows an embodiment of an ornamental fish hot water heater according to the present invention, wherein (A) is a schematic vertical sectional view of the whole;
(B) is an explanatory view of a main part when (A) is viewed from the plane side,
(C) shows an overall perspective view of the plug side.

FIG. 8 is an explanatory diagram showing an overall configuration example of a conventional ornamental fish breeding apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ornamental fish breeding apparatus 2 Water tank 3 Temperature controller 4,40 Hot water heater for ornamental fish 5 Water temperature sensor 6,422 Suction cup 7 Water 8 Sand 401 Heater main body 402,403 Electric wire 404 Plug 405 Electric heating wire 406 Abnormal temperature detecting means 407 Current Blocking means 408 Ceramic tube 409 Shielding plate 410 Partition plate 411 Silicon resin 412,418 Cap 413 Mica plate 414 Insulating sand 415 Power cord 416 Rubber plug 417 Epoxy resin 419 Crimp terminal 420 Tape 421 Tube 423 Rated seal R Resistance TR Triac W Water surface

Claims (5)

[Claims] 1. An aquarium fish hot water heater to be used by being put into water, wherein one of an abnormal temperature detecting means electrically connected in parallel to a heating wire of the heater and a heating wire connected to the heating wire. And a current cut-off means interposed in the power supply line of (1), and a function of preventing an abnormal temperature rise of the heater is provided. 2. A hot water heater for appreciation fish used by being put into water, wherein the heating wire is electrically connected in parallel to a heating wire of the heater, and the heating wire is electrically connected when an abnormal temperature is detected. An abnormal temperature detecting means to be short-circuited, and a current interrupting means interposed in one of the power supply lines connected to the heating wire and capable of freely interrupting a current flowing through the heating wire due to an overcurrent from the abnormal temperature detecting means are provided. And a function for preventing an abnormal rise in temperature of the heater. 3. The water heater for appreciation fish according to claim 1, wherein said abnormal temperature detecting means is provided in a heater main body, and said current interrupting means is provided in a plug. 4. A warm water heater for appreciation fish which is used by being introduced into water, wherein an abnormal temperature detecting means is connected in parallel with the electric heating wire of the heater in a cylindrical heater main body and the electric heating wire. A water heater for appreciation fish, wherein a current interrupting means is interposed in one of the power supply lines connected to the heating wire in the sealed heater main body and led out from the heater main body. 5. A warm water heater for appreciation fish used by being introduced into water, wherein the heating wire of the heater and an abnormal temperature detecting means electrically connected in parallel to the heating wire are built in. And a power cord connected to the heating wire inside the sealed heater body and led out of the heater body, and a plug integrated with the power cord. Current interruption means in the power cord or plug A warm water heater for ornamental fish, characterized by the arrangement of