JPH0564654U - Insulation device with safety device - Google Patents

Abstract

(57) [Summary] [Purpose] Even if the heat retention controller falls, it is possible to reliably prevent electric leakage in the bathroom. A water absorption pump 12 that absorbs water in a bath and a heater 17 that raises the absorbed water to a predetermined temperature are housed in the same housing, and the housing includes a housing. A tilt detector 65 is provided, and a fall safety control means 70 that operates when a tilt detection output is obtained is installed outside the bathroom. Since the fall safety control means 70 is outside the bathroom,
There is no fear of electric leakage in the bathroom regardless of which side of the hot line 41 or the ground line the outlet 35 is inserted into the commercial power supply.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat retaining device suitable for use in a bath in a home, and particularly to a heat retaining device with improved safety.

[0002]

[Prior Art]

 Recently, there has been a bath that has been installed at home and has been converted into a hot spring so that the bath can be used anytime. As a heat retaining device used in such a case, one having a configuration as shown in FIG. 3 is known.

The warming device is usually used in a bathroom, and as shown in the figure, a warming device 10 is installed on the upper surface side of the edge 2 of the bath tank 1, and the warming device 10 keeps the inside of the bathtub 1 inside. The hot water temperature is controlled to be a constant temperature.

Therefore, the filtration filter 11 is attached so as to project to the lower surface side of the casing 20 of the heat retention device 10, and the hot water filtered by the filtration filter 11 is absorbed by the water absorption pump 12 installed in the casing 20. To be done. The absorbed hot water is guided to the tank 13 through the pipe 18.

Activated stones 14 are filled in the tank 13, and a heater 17 for heating is attached to the outer bottom surface side of the tank 13.

Therefore, the filtered hot water is reactivated by the activated stone 14 and raised to a predetermined temperature, and then returned to the bathtub 1 from the drain port (faucet) 15. By circulating the hot water in the bathtub 1 through the heat retention device 10 in this manner, the hot water temperature in the bathtub 1 is maintained at the preset temperature at all times, and the bath in the home can be used like a hot spring.

Since the water absorption pump 12 and the heater 17 described above each consume a large amount of power, a commercial power source is usually used for them. Although the housing 20 has a waterproof structure, an earth leakage breaker 30 is installed in the commercial power supply path in consideration of safety.

Reference numeral 35 is an outlet, and 40 is a controller. The controller 40 sets the driving time of the heat retention device 10 and the hot water temperature.

Here, when installing the heat insulating device 10, measures such as fixing the heat insulating device 10 using a wall in the bathroom are taken, but the heat insulating device 10 itself is heavy. However, the heat retention device 10 is not necessarily firmly fixed to the wall. Therefore, if the fixing means is loosened or the position of the heat retaining device 10 is slid with respect to the edge 2, the heat retaining device 10 itself may fall into the bathtub 1 when an unnecessary external force is applied to the heat retaining device 10.

While the bathtub 1 is in use, even if the heat retention device 10 falls into the bathtub 1, it does not cause a leak, so that the leak breaker 30 often does not operate immediately. Therefore, the warming device 10 is still in a state of being supplied with power even after the commercial power source has dropped. Therefore, the risk of electric shock to the human body is extremely high.

As a safety measure for avoiding such a dangerous situation, as shown in FIG. 4, an inclination detector 65 is provided in the controller 40, and the leakage breaker 30 is activated immediately when the inclination detector 65 is activated ( Japanese Patent Application No. Sho 63-140404) is considered.

This configuration will be described with reference to FIG. In FIG. 3, as described above, the water suction pump 12, the activated stones 14, and the heater 17 are housed in the housing 20. Then, the heat retaining device 10 itself is installed and fixed in the bathroom by utilizing the edge 2 of the bathtub 1 as in the conventional case, and the hot water in the bathtub 1 circulates through the heat retaining device 10 so that the bathtub 1 has It is always kept at a predetermined temperature and filled with activated hot water.

As shown in FIG. 4, an earth leakage breaker 30 is installed outside the bathroom, and commercial power is supplied to the water absorption pump 12, the heater 17, and the controller 40 through the earth leakage breaker 30. ..

An inclination detector 65 is attached at a predetermined position inside the housing 20, and the inclination of the heat retaining device 10 itself is detected. It is possible to arbitrarily determine how much inclination occurs and the inclination detection output can be obtained from this. In this example, the inclination detection output is set to obtain a predetermined inclination detection output when the inclination is 30 ° or more. ing.

A thermostat 60 is provided near the heater 17 to constantly monitor the heater temperature.

FIG. 5 is a system diagram showing an example of the above-described controller 40. Among the power supply lines wired by the earth leakage breaker 30, the water absorption pump 12 and the heater are provided between the hot line 41 and the earth line 42. 17 are connected in parallel. The energization control for these is controlled by switches (both are relay switches) 52P and 52H connected in series with them.

The hot line 41 and the earth line 42 are connected to both ends of the primary coil 44 a of the power transformer 44, and the voltage induced on the secondary coil 44 b side is applied to the rectifier circuit 45 to generate a predetermined DC voltage. It is formed.

This DC voltage is converted to a constant voltage by the constant voltage power supply 46, and the DC voltage that has been converted to a constant voltage is supplied to the relay drive circuit 50 via the thermostat 60. Since the relay drive circuit 50 is provided with the relays 51P and 51H, the relay switches 52P and 52H are drive-controlled by this.

Reference numeral 70 denotes an inclination detecting means, which has the inclination detector 65 described above. A mercury switch or the like can be used as the inclination detector 65.

The inclination detector 65 is connected in series to a relay 71 S connected between the output side of the constant voltage power supply 46 and the ground.

On the other hand, the earth leakage breaker 30 is provided with a ground earth line 43 in addition to the above-mentioned lines 41 and 42, and is provided between the hot line 41 and the ground earth line 43 and between the ground line 42 and this ground earth line 43. A relay switch 72S is connected via a predetermined resistor 73, 74 between the two. The relay switch 72S is controlled by the relay 71S.

The reason why the resistor 73 is also connected to the hot line 41 is that the hot line 41 also becomes the ground line depending on how to insert the socket 35 into the power plug.

When the controller 40 is configured in this way, the temperature detector 10 is fixed at a predetermined position in a normal use state, so the inclination detector 65 is in an open state. Therefore, the power circuit of the relay 71S is not closed, and the relay switch 72S is open.

However, when the heat retention device 10 tilts, this state is detected by the tilt detector 65, and when this is detected, the power supply circuit of the relay 71S is closed, so that the relay 71S is energized. The relay switch 72S closes.

Then, a predetermined current (for example, 5 mA) determined by the resistance value of the resistor 74 (or 73) flows between the earth line 42 (or the hot line 41) and the earth line 43. This current is the same as the leakage current for the earth leakage breaker 30, so that the earth leakage breaker 30 operates, the commercial power source is immediately cut off, and the power supply to the heat retention device 10 is stopped. Therefore, even if the heat insulating device 10 falls into the bathtub 1, there is no risk of electric shock to the human body.

Normal leakage is detected by the leakage current flowing through the lines 41 and 42. When a predetermined leakage current flows, the leakage breaker 30 operates and the commercial power supply is cut off.

[0027]

[Problems to be solved by the device]

 By the way, in the configuration shown in FIG. 5, when the earth leakage breaker 30 is activated, no current flows through the lines 41, 42, 43. However, this is a story when the earth leakage breaker 30 is properly grounded, and when the earth is not grounded, current may flow in the line 41 or 42. In that case, there is a risk of electric shock if a device on the current path connected to the line 41 or 42 accidentally touches the exposed line. Therefore, it cannot be said that complete safety measures are taken even with the configuration of FIG. This is because the earth ground of the earth leakage breaker 30 may be imperfect.

[0028] Therefore, the present invention solves such a conventional problem, and proposes a heat retaining device with a safety device in which the risk of electric shock is extremely small even if the ground contact is incomplete. It is a thing.

[0029]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention has a water absorption pump that absorbs water in a bathtub and a heater that raises the absorbed water to a predetermined temperature, and these are housed in the same housing, and The housing is equipped with a tilt detector for the housing, and fall safety control means that operates when the tilt detection output is obtained is installed outside the bathroom.

[0030]

[Action]

 As shown in FIG. 1, when the inclination detector 65 operates, the photodiode 72a is turned on, the phototriac 72b is turned on, and the leakage current flows through the load resistor 71. The leakage detection circuit 34 detects this and the leakage breaker 30 operates. Then, the current supply to all the lines 41, 42, 74, 75 installed in the bathroom is stopped. Therefore, even when the outlet 35 is inserted so that the hot line 41 becomes an earth line, the power supply to the controller 40 side is completely cut off. This completes the security.

[0031]

【Example】

 Next, an example of a heat retaining device with a safety device according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a heat retaining device with a safety device showing an example thereof, and in this example, an example is shown in which a fall safety control means 70 is built in an earth leakage breaker. The parts corresponding to those in FIG. 5 are designated by the same reference numerals, and the description thereof will be omitted.

The earth leakage breaker 30 is composed of a ring-shaped earth leakage detection coil 31 and an earth leakage detection circuit 34 as shown in the figure, and an internal hot line 32 corresponding to the hot line 41 is wound around the earth leakage detection coil 31 for several turns. It is rotated and connected to the input / output terminals 32a and 32b.

Similarly, the internal earth line 33 corresponding to the earth Iran 42 is wound around the leakage detection coil 31 for several turns and connected to the input / output terminals 33a and 33b.

Further, to both lines 32 and 33, leakage switches 36 a and 36 b which are on / off controlled by a leakage detection circuit 34 are connected.

The breaker 30 configured as described above is provided with the following fall safety control means 70 inside. This fall safety control means 70 is installed outside the bathroom, and in this example, the case where it is built in the earth leakage breaker 30 is shown. The fall safety control means 70 is provided between the constant voltage power supply 46 and the inclination detector 65, and between the constant voltage power supply 46 and the inclination detector 65, a load resistor 71 and a photodiode (for example, LED ) A series circuit of 72a is connected, and a phototriac 72b that constitutes the photoelectric conversion unit 72 is provided corresponding to the photodiode 72a. The photo triac 72b is connected in series with a load resistor 73 connected between the internal hot line 32 and the internal ground line 33. 70a and 70b are external terminals of the earth leakage breaker 30.

In the heat retaining device with the safety device configured as described above, since the current does not flow to the photodiode 72a in the normal operation mode in which the inclination detector 65 does not operate, the current path including the load resistance is It is not formed, and the earth leakage breaker 30 does not operate immediately. If another cause of leakage occurs in this state, the leakage breaker 30 immediately operates and the power supply to the controller 40 is automatically stopped.

On the other hand, when the tilt detector 65 detects this by turning on the controller 40 or the like and current is turned on, a current flows and the photodiode 72a is excited to turn on the photo triac 72b. This causes a current to flow through the load resistance, which is detected by the leakage detection circuit 34, and the leakage breaker 30 is activated immediately after the detection of the current, and the power supply to the controller 40 is stopped. When the power supply to the controller 40 is stopped, the voltage application to the hot line 41 and the earth line 42 is cut off, and the voltage application to the detection lines 74 and 75 including the inclination detector 65 is also cut off. This completely shuts off the power supply to prevent leakage in the bathroom.

As described above, since the fall safety control means 70 is located outside the bathroom, even if the outlet 35 is plugged into the commercial power source with respect to which side of the hot line 41 or the ground line 42, the leakage of electricity in the bathroom is prevented. Don't worry.

FIG. 1 shows an example in which the earth leakage breaker 30 itself is controlled to the safe side by detecting the inclination, but FIG. 2 shows a fall safety control means dedicated to inclination detection between the earth leakage breaker 30 and the controller 40. This is an example in which 70 is provided outside the bathroom. Therefore, as shown in FIG. 2, dedicated auxiliary switches (normally closed switches) 83a and 83b are provided on the hot line 41 and the earth line 42, which are wired between the earth leakage breaker 30 and the controller 40, which are the relays 82. Commonly controlled by. The energization control of the relay 82 is performed by the output of the control circuit 81, and the inclination detector 65 is connected to the control circuit 81.

With this configuration, since the control circuit 81 does not operate in the normal operation mode, the controller 40 is energized, but when the tilt is detected, the control circuit 81 operates and the relay 83 is energized. As a result, the auxiliary switches 83a and 83b are immediately turned off and the energization of the controller 40 is cut off.

Also in this configuration, since the fall safety control means 70 is installed outside the bathroom, it is possible to prevent electric leakage in the bathroom regardless of how to insert the outlet 35. Although the mercury detector is used as the inclination detector 65 and the relay 71S and the relay switch 72S are used as means for closing the lines 41, 42, 43 in the above description, these are merely examples.

[0043]

[Effect of the device]

 As described above, according to the present invention, the heat insulation device is provided with the inclination detector, and when the fall of the heat insulation device is detected, the power supply to the heat insulation device is immediately cut off, and a means for cutting off the power supply is provided outside the bathroom. It is configured to be installed in. According to this, when the power is cut off, the voltage application to the power supply line inside the bathroom is completely cut off, so if the warming device falls into the bathtub, you may touch the equipment installed in the bathroom. However, there is almost no risk of electric shock to the human body.

Since a normal earth leakage can be detected by an earth leakage breaker, the structure of the present invention can provide this kind of heat insulation device having higher safety than conventional ones, and is therefore applied to facilities such as a simple hot spring for a domestic bath. And is very suitable.

[Brief description of drawings]

FIG. 1 is a system diagram showing an example of a heat retaining device with a safety device according to the present invention.

FIG. 2 is a system diagram showing another example of a heat retaining device with a safety device according to the present invention.

FIG. 3 is a configuration diagram showing an example of a conventional heat retaining device.

FIG. 4 is a configuration diagram showing an example of a conventional heat retaining device.

FIG. 5 is a system diagram showing a specific example thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bath 10 Heat retention device 11 Filtration filter 12 Water absorption pump 13 Tank 14 Activated stone 17 Heater 30 Leakage breaker 42 Earth line 43 Earth ground line 60 Thermostat 65 Inclination detector 70 Fall safety control means

Claims (1)

[Scope of utility model registration request] 1. A water absorption pump for absorbing water in a bathtub, and a heater for raising the absorbed water to a predetermined temperature, which are housed in the same housing, and the housing has a housing A heat retaining device with a safety device, wherein a tilt detector is provided, and fall safety control means that operates when a tilt detection output is obtained is installed outside the bathroom.