JP4872820B2 - Electrical equipment - Google Patents

Description

  The present invention relates to an electric device such as a warm water washing toilet seat and an electric water heater, and more particularly to an electric device having a fire extinguishing function.

  Conventionally, in general circuit boards, if there is a part that may ignite in the event of a load or circuit failure, cover the part with a fireproof member such as a glass tube or cover the part with a noncombustible material. Or the outer shell case on which the circuit board is arranged is made of non-combustible material.

No. 7-33056 is an air conditioner that houses an electrical component box in which electrical components, wiring boards, and the like are housed inside a main body, and a fire extinguishing agent is sealed inside the main body using a resin having a relatively low melting point. It is described that a fire extinguishing agent container is provided, the resin container is melted by heat at the time of ignition, and the fire extinguishing agent is applied to the ignition site to extinguish the fire.
Reality 7-33056

  In the above actual fairness 7-33056, a fire extinguishing agent and a container therefor are necessary, which is expensive.

  An object of this invention is to provide the electric equipment which can be extinguished with an inexpensive structure.

  The electric device according to claim 1 is an electric device having a water passage member and an electric circuit member, wherein at least a part of the water passage member is disposed above the electric circuit member, At least a part of the upper portion of the electric circuit member is made of a heat-meltable material that is melted by heat generated when the electric circuit member is ignited.

  The electrical device of claim 2 is provided with a valve that is closed when the electrical device is not in use on the upstream side of the electrical circuit member upper portion of the water passage member in claim 1, The downstream side of the water flow member is open to the atmosphere.

  According to a third aspect of the present invention, there is provided the electric device according to the first or second aspect, wherein a case surrounding the electric circuit member is provided, and the water passage member is passed through the case.

  According to a fourth aspect of the present invention, there is provided the electric device according to the third aspect, wherein a drain pipe for guiding the water in the case to the outside of the electric device is provided.

  According to a fifth aspect of the present invention, there is provided an electrical apparatus according to any one of the first to fourth aspects, further comprising a leakage prevention means.

  According to a sixth aspect of the present invention, there is provided the electric device according to any one of the first to fifth aspects, wherein the electric device is a warm water washing toilet seat or an electric water heater.

  According to the electric device of the present invention, the heat-meltable material of the water passage member is melted by the ignition of the electric circuit member, and the water in the water passage member is poured onto the electric circuit member to extinguish the fire.

  In the present invention, an expensive chemical fire extinguishing agent and a container for housing it are unnecessary.

  According to the electric device of claim 2, since the valve is closed when the electric device is not used, when the electric circuit member is ignited when the electric device is not used, the inside of the water flow member on the downstream side of the valve Only water will flow out, and water will not flow.

  According to the third aspect, water applied to the electric circuit member is prevented from spreading to the surroundings.

  According to the fourth aspect, since the water in the case is discharged out of the electric device, the water is prevented from spreading around the case.

  According to the fifth aspect, even if water is applied to the electric circuit member, leakage is prevented.

  As described in claim 6, the present invention is suitable for application to a warm water washing toilet seat, an electric water heater and the like.

  Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 1 is a perspective view of a hot water washing toilet seat according to an embodiment, FIG. 2 is a perspective view of a circuit board case, and FIG. 3 is a sectional view taken along line III-III in FIG.

  As shown in FIG. 1, a warm water flush toilet seat 1 includes a toilet seat box 2 installed on a rear upper surface of a Western-style toilet, a toilet seat 3 and a toilet lid 4 attached to the toilet seat box 2 so as to be rotatable in the vertical direction, A nozzle 5 that can protrude forward from the lower edge of the front of the toilet seat box 2 is provided. This nozzle 5 is for jetting warm water upward from its tip to wash the human buttock. The nozzle 5 is held by a nozzle cylinder 6.

  A stop cock 10 provided on the wall surface of the toilet room and a valve unit 12 of the toilet seat box 2 are connected via a pipe 11. The valve unit 12 is provided with a strainer 13, a main valve 14, and a pressure adjustment valve 15.

  The outflow side of the main valve 14 and the hot water tank 17 in the toilet seat box 2 are connected by a water supply hose 16. A vacuum breaker 18 provided at the hot water outlet of the hot water tank 17 is connected to a switching valve 20 with a water amount adjusting function via a hot water supply hose 19. This switching valve 20 is connected to the nozzle 5 via a hot water supply hose 21.

  A water escape hose 22 is provided so that water discharged from the pressure regulating valve 15 of the valve unit 12 flows out to a toilet bowl (not shown).

  A circuit board 30 for controlling the main valve 14, the switching valve 20, and the like is installed in a case 31 in the toilet seat box 2. As shown in FIG. 3, a circuit component 32 such as an IC chip, a capacitor, a coil, and a varistor is mounted on the circuit board 30.

  The water supply hose 16 is made of a thermoplastic synthetic resin having flame retardancy such as flame retardant-containing polyethylene. A part of the water supply hose 16 is passed over the circuit board 30 in the case 31.

  A drain hose 33 for guiding water from inside the case 31 to the toilet bowl of the toilet bowl is connected to the lower part of the case 31.

  A plug unit 41 is provided at the tip of the power supply harness 40 connected to the toilet seat box 2, and is inserted into an outlet 42 on the wall surface of the toilet room. The plug unit 41 is provided with an earth leakage breaker (not shown).

  In the warm water washing toilet seat 1 configured as described above, when a washing switch (not shown) is operated, the main valve 14 is opened, hot water is supplied from the hot water tank 17 to the nozzle 5, and the nozzle 5 is moved forward. Hot water spouts from the tip, and human body washing is performed. When the stop switch of the remote controller is operated, the main valve 14 is closed, the hot water jet from the nozzle 5 is stopped, and the nozzle 5 is moved backward.

  When some of the circuit components 32 are ignited in the non-use state of the electrical device 1 whose cleaning operation is stopped by the stop switch (for example, when the overvoltage is applied to the varistor and sparks), the circuit components 32 are caused by the heat. The water supply hose 16 above is melted by heat to make a hole, and the water accumulated in the water supply hose 16 leaks from the hole, is applied to the circuit component 32, and is extinguished. As a result, baking of the circuit board 30 is prevented. The downstream side of the water supply hose 16 communicates with a vacuum breaker 18 via a hot water tank 17, and the vacuum breaker 18 is open to the atmosphere. Therefore, when a hole is formed in the water supply hose 16 by heat melting, water smoothly flows out from the hole.

  The water applied to the circuit component 32 then flows out to the toilet bowl via the drain hose 33.

  In this case, since the main valve 14 is closed, the water flowing out from the water supply hose 16 is only the water accumulated in the water supply hose 16, and the water does not flow freely.

  In the present embodiment, since the earth leakage breaker is provided in the outlet unit 41, when water is applied to the circuit component 32 and the earth leakage occurs, the earth leakage breaker is activated and the power supply to the toilet seat box 2 is stopped. The earth leakage breaker may be provided in the toilet seat box.

  Although the said embodiment is related with a warm water washing toilet seat, it is applicable also to an electric water heater etc.

  In the above embodiment, the water accumulated in the water supply hose 16 is used for fire extinguishing, but the hot water in the hot water tank 17 may be used for fire extinguishing.

It is a see-through | perspective perspective view of the warm water washing toilet seat which concerns on embodiment. It is a perspective view of a circuit board case. It is sectional drawing which follows the III-III line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hot water washing toilet seat 2 Toilet seat box 14 Main valve 16 Water supply hose 17 Hot water tank 30 Circuit board 31 Case 32 Circuit component 33 Drain hose

Claims (6)

In an electric device having a water passage member and an electric circuit member,
At least a part of the water flow member is disposed above the electric circuit member;
An electrical apparatus characterized in that at least a part of the upper part of the electric circuit member of the water passage member is made of a heat-meltable material that is melted by heat generated when the electric circuit member is ignited.   2. The valve according to claim 1, wherein a valve that is closed when the electrical device is not used is provided upstream of an upper portion of the water passage member, and the downstream side of the water passage member is air. Electrical equipment characterized by being open to   3. The electric device according to claim 1, wherein a case surrounding the electric circuit member is provided, and the water passage member is passed through the case.   4. The electric device according to claim 3, further comprising a drain pipe that guides water in the case to the outside of the electric device.   5. The electric device according to claim 1, further comprising a leakage breaker.   6. The electric device according to claim 1, wherein the electric device is a warm water washing toilet seat or an electric water heater.

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