JPH0245721Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a liquid heating device configured to heat liquid in a water storage tank and maintain the temperature of the liquid at a constant temperature. The present invention relates to a mounting structure for a thermoswitch to be controlled.

In this liquid heating device, the present invention makes it possible to accurately sense the temperature of the liquid without being affected by the ambient temperature by bringing the thermoswitch into contact with the outer bottom of the water tank and covering the outer periphery with a heat insulating material. At the same time, it is characterized in that the number of parts is reduced by pressing and holding the heat insulating material with a presser portion formed on the back surface of the wiring terminal block of the electrical component.

Below, a sanitary washer is listed as an example of this proposal.
This will be explained in detail with reference to the drawings.

In the figure, the proposed sanitary washer is roughly divided into a washer body 1 consisting of a base 2, a base cover 3, an upper cover 4, etc., and a cartridge type tank 5.
It is composed of a nozzle 6.

The base 2 has a circular cross section, and a bottom opening is closed by a back plate 7, and a plurality of rubber legs 8 are attached to the back plate 7 with screws 9. The upper surface of the base 2 is provided with an opening 10 at a suitable position on the periphery thereof, through which a storage cylinder (to be described later) is inserted.
The water storage tank 11 is integrally formed while avoiding.

The water storage tank 11 is integrally formed with a small-diameter cylindrical portion having one end opened on the inner bottom surface and the other end opened below the back plate 7, and a drain port 12 is formed in the cylindrical portion. A removable drain plug 13 is fitted therein. The drain plug 13 has the same height as the rubber legs 8 and comes into contact with the floor surface, thereby preventing it from accidentally falling off. Further, the water storage tank 11 has a water absorption cylinder 14 integrally protruding from the inner bottom surface thereof, and a heater 15 is installed inside the water absorption cylinder 14 at a position below the upper end thereof. This heater 15 has a temperature fuse 16 fitted therein. It is arranged and fixed on the inner bottom surface of the water storage tank 11 and heats the water in the water storage tank 11 to raise its temperature. Water level switch 17 is water tank 1
1, and a float 19 with a built-in permanent magnet that is slidably inserted into the guide 18 and moves up and down as the water level in the water tank 11 changes.
and a reed switch 20 that is built into the guide 18 and turns on and off depending on the distance of a permanent magnet.The reed switch 20 is turned on when the water level in the water tank 11 is at a specified level, and when the water level drops below the specified level, the power is cut off. It turns OFF when the operating water level is reached. Incidentally, the power cutoff operation water level is set at a position slightly above the upper end of the water absorption tube 14.

The temperature control means includes, for example, a high-temperature thermal reed switch (thermo switch) 21 and a low-temperature thermal reed switch (thermo switch) 22, which are disposed in contact with the outer bottom surface of the water tank 11, particularly near the heater 15. . Both switches 21,
22 covers the opposite side of the water tank 11 with a heat insulating material 23 so that the water temperature in the water tank 11 can be accurately detected. It is pressed and held in a predetermined state by the presser part 25. This presser part 25
is integrally molded on the back surface of the terminal block 26. This terminal block 26 has a plurality of terminals and is used for wiring electrical components such as the thermoswitch 22.

The pump 27 includes a motor 28, a casing 29 into which the motor shaft is inserted, and the motor shaft and the casing 29.
It is composed of an oil seal 30 that keeps the space watertight, another casing 32 that is combined with the casing 29 to form a pump chamber 31, and a fan 33 that is attached to the motor shaft within the pump chamber 31. Interior. Therefore, this pump 27 has a suction port 34.
The part is fitted into the water suction cylinder 14 through an O-ring 36 in a watertight state, while the discharge port 35 is communicated with the nozzle 6 side. In addition, the base 2 is equipped with a transformer 37, in addition to thermal reed switches 21, 22, a pump 27, etc.
A rectifier 38 and a current fuse 39 are installed inside.

The base cover 3 closes the upper opening of the water tank 11, and has a stepped portion 40 on the inner periphery of the upper end of the water tank 11.
Place it on top and attach it with screws 41. An O-ring 42 is interposed between the base cover 3 and the stepped portion 40, and this O-ring 42 is pressed against the bottom and side surfaces of the stepped portion 40 to maintain a watertight state between the two. Further, the base cover 3 forms a socket 43 by protruding downward, and a valve shaft abutting part 44 is provided at the center of the socket 43.
has.

The cover 4 is combined with the base 2 and the base cover 3 to form the cleaning device main body 1, and has a semicircular cross section, and its outer circumferential arc surface coincides with the outer circumferential surface of the base 2. This upper cover 4 is the base cover 3
It is arranged so as to avoid above the socket 43 of the upper cover 4 and cover the opening 10, and a recess is formed in the upper part of the outer periphery, and the recess is used as a storage space 45. It is opened and closed by a lid body 46 which coincides with the outer shell and is pivotally connected to the cover 4. Above storage space 4
A hose storage cylinder 47 and a bottomed nozzle storage cylinder 48 are removably inserted into the bottom wall of 5, and each storage cylinder 47,
48 are suspended and supported by their upper flanges, and their lower ends protrude into the base 2 through the opening 10.

A switch board 49 is attached to the inside of the upper end of the upper cover 4 with screws 50, and a cleaning switch 50 and a heat retention switch 51 are mounted on this switch board 49.
and an energizing lamp 52. The cleaning switch 50 is a slide type switch, and an operating knob 54 is fitted into the operating element through an operating port 53 of the upper cover 4, and the knob 54 is positioned on the upper surface of the upper cover 4. On the other hand, the heat retention switch 51 is a rotary type switch, and the operation knob 56 is connected to the operation port 55 of the upper cover 4.
and position the knob 56 on the upper surface of the upper cover 4. Therefore, recesses 57 and 58 are formed on the upper surface of the upper cover 4 to suppress the amount of protrusion of the operation knobs 54 and 56.
7 and 58 are opened from above to the sides to prevent liquid such as water from staying in the recesses 57 and 58, while the water walls 59 and 60 are formed around the periphery of each operation port 53 and 55. This prevents water and the like from flowing into the upper cover 4 which is provided with a protrusion. Note that waterproof sheets 61 and 62 are attached to each of the operation knobs 54 and 56 to cover the operation ports 53 and 55. Further, a through hole is formed in the upper surface of the upper cover 4 so as to face the energizing lamp 52, and a lamp cover 63 is attached to the through hole.

The switch board 49 has both ends bent downward to form guide pieces 64, 64.
4 and 64 are attached to the inner surface of the upper cover 4, and one of the guide pieces 64 is extended to near the lower end of the upper cover 4, and a knob portion 65 is bent at the tip. Therefore, even if the upper cover 4 is located at the deepest part of the upper end where the width is narrowed due to the formation of the storage space 45, the cleaning switch 50 and the heat retention switch 51 can be removed.
can be easily aligned with the operation ports 53, 55, and the assembly work efficiency can be significantly improved.

The cartridge type tank 5 has a handle 6 on the top opening.
6 is attached and also includes a removable cover plate 67,
A water supply port 68 is formed at the bottom of the water supply port 68 so as to protrude downward. A seal gasket 70 is clamped and supported between the water supply port 68 and a gasket presser 69 attached thereto, and the tank 5 is placed on the washer body 1.
When the part is fitted into the socket 43, both are kept in a watertight state. Further, the seal retainer 69 supports a valve shaft 72 having a valve body 71 at its upper end so as to be movable up and down. This valve shaft 72 is always biased by a spring 73 to keep the water supply port 68 closed by the valve body 71, and when the tank 5 is placed, it is pushed up against the spring 73 by the valve shaft abutting portion 44, thereby supplying water. Mouth 6
Open 8.

The tank 5 has a circular cross section, and its outer circumferential arc surface coincides with the outer circumferential surface of the base 2. In addition, the tank 5 is integrally formed with a skirt portion 74 that extends downward from the lower end of the valve shaft 72 and is continuous with the lower end of the outer circumferential arc surface. The valve shaft 72 is prevented from being pushed up by the surface.

When such a tank 5 is placed on the washer body 1, the water inside the tank 5 is supplied into the water tank 11 through the water supply port 68 and the socket 43, and the water inside the tank 1 is
The water level in 1 is normally the lower end of the socket 43, that is, the water supply port 6.
It rises to the lower end position of 8 and does not rise any further. This is because there is no escape route for the air in the water tank 11, and the upper part of the water tank 11 is filled with air. Therefore, the amount of water stored is small compared to the volume of the water tank 11, and the volume of the water tank 11 cannot be used effectively. However, in this embodiment, the ventilation pipe 75 is provided upright on the base cover 3 to provide an escape route for the air inside the water storage tank 11.
It is designed to store water throughout. That is, the capacity of the water storage tank 11 is fully utilized so that a large amount of water can be stored even with a small volume. The vent cylinder 75 is located inside the upper cover 4, and its upper end is located above the specified water level of the tank 5.

Although the water tank 11 becomes full of water, the O-ring 42 and seal packing 70 prevent the base cover 3
There will be no flooding on top. However, in consideration of the worst case, in this embodiment, the base cover 3 and the water tank 1 are
Water walls 76 and 77 are provided protrudingly on the peripheral edge of the base 1 to prevent water from entering the inside of the base 2 from the opening 10.

The nozzle 6 is equipped with a flow rate adjustment valve 78,
Flexible hose 7 wound so that it is always in a contracted state
9. Pump 27 via joint 80 and hose 81
It is connected to the discharge port 35 of. The flexible hose 79 is introduced into the base 2 through the hose storage tube 47 and is stored in the hose storage tube 47 in a contracted state. Further, the joint 80 is a T-shaped joint, which connects the flexible hose 79 and the hose 81 in a straight line, and connects the branched end perpendicular thereto to the inner bottom of the water tank 11 via the hose 82. .

In the figure, 83 indicates a power plug, and 84 indicates a power cord.

The sanitary washer of the present invention has the above-mentioned structure, and its electric circuit is formed as shown in FIG. The cleaning switch 50 is selectively switched to the contact a side when the operating knob 54 is set to the "ON" display, and to the contact B side when the operating knob 54 is set to the "OFF" display. In addition, the heat retention switch 51 switches the open contact c side when the operation knob 56 is set to the "Water" display, the contact d side when the control knob 56 is set to the "warm retention 1" display, and the contact e side to the contact e side when the operation knob 56 is set to the "warm retention 2" display. They are selectively switched.

Next, its effect will be explained.

First, I will explain the preparation stage. When the tank 5 is removed from the washer body 1 and filled with water, and the tank 5 is placed again in a predetermined position on the washer body 1, the valve body 71 is pushed up against the spring 73 by the valve shaft 72, and water is supplied. Open the mouth 68.
Therefore, the water in the tank 5 flows from the water inlet 68 to the inlet 4.
3 and flows into the water storage tank 11, and when the water level in the water storage tank 11 reaches the specified water level, the reed switch 20 is activated.
ON, that is, the water level switch 17 is turned ON. Since the water level in the water tank 11 has an air escape route called the ventilation pipe 75, the water level in the water tank 11 rises further than the specified water level, and the water tank 11 becomes full of water.

Therefore, the sanitary washer is kept energized at all times. Now, when the power plug 83 is connected to an AC power source, the energization lamp 52 lights up to indicate the energization state. At this time, the user switches the heat retention switch 51 to an arbitrary position. Let's assume that the user selects hot water with a high temperature and sets the operation knob 56 to "warm retention 2". Heater 15
is the contact point b of the cleaning switch 50 in the "off" position,
Electricity is applied through the contact e of the heat retention switch 51 and the thermal reed switch 21 to heat the water in the water tank 11 and raise it to the operating temperature of the thermal reed switch 21. From then on, the electricity is applied intermittently by turning the thermal reed switch 21 ON and OFF. to maintain a constant temperature. Therefore, hot water at a desired temperature is stored in the water tank 11 and is ready for use.

Note that the nozzle 6 is housed in a nozzle storage cylinder 48,
Since it is covered by the lid 46, it can be stored hygienically, and when the room temperature drops below zero, especially at night in winter, the warm air inside does not escape to the outside through the lid 46, and the nozzle 6 and flexible Water remaining inside the sex hose 79 etc. will not freeze.

Therefore, when using after defecating, press the evacuation knob 5.
4 to switch the cleaning switch 50 to the contact a side.
The pump 27 is driven by turning on the heater 15, cutting off the power supply to the heater 15, and supplying power to the motor 28 via the transformer 37 and the rectifier 38. Then, the hot water in the water tank 11 is circulated through the pump chamber 31, the hose 81, the joint 80, and the hose 82,
While the temperature is made uniform by stirring by this circulation, the cold water remaining inside the pump chamber 31 and the like is returned to the water storage tank 11 and heated. In this state, if the nozzle 6 is taken out and the flow rate adjustment valve 78 is operated to open the flow path, the hot water in the water tank 11 is force-fed from the flexible hose 79 to the nozzle 6 and is vigorously jetted out, causing the anal region It will be used for cleaning. At the beginning of use, cold water is ejected from the nozzle 6, but only a small amount of water remains in the nozzle 6 and the flexible hose 79, and does not cause any particular discomfort to the user. Further, a portion of the hot water is circulated through the hose 82 into the water storage tank 11 to continue stirring.

After use, if the cleaning switch 50 is turned on by operating the insertion knob 54 and the contact b side is turned on, the pump 27 is stopped, while the heater 15 is energized again, and as the water level in the water tank 11 decreases, the water level in the tank 11 decreases. By heating the water newly supplied from 5, hot water at the desired temperature is stored again and prepared for next use.

In the above embodiment, if the tank 5 is used in an empty state and the water level in the water storage tank 11 drops to the water level at which the water level switch 17 operates to shut off the power, the reed switch 20 turns OFF, The water level is set at the upper end of the water suction cylinder 14, that is, at the pump 2.
Since it is set slightly above the suction side opening portion of No. 7, it is possible to stop the pump 27 before it becomes idling. Also, in this state, turn the cleaning switch 50.
Even if the heater 15 is left with the contact b side set to 0, the heater 15 is not energized by the reed switch 20 being turned OFF, and the dangerous situation of dry heating will not occur.

Note that the present invention is not limited to sanitary cleaners, and can be implemented in any liquid heating device that heats liquid and maintains the temperature of the liquid at a constant temperature.

As described above, according to the configuration of the present invention, it is possible to accurately sense the temperature change of the liquid in the water storage tank without being affected by the ambient temperature, and perform highly accurate control. Moreover, since the wiring terminal block for the electrical components electrically connected to the thermoswitch is also used as the press-holding member for the above-mentioned heat insulating material, the number of parts can be reduced without requiring any special parts for press-holding. It can be reduced and the configuration can be simplified.

Furthermore, since the thermoswitch and the terminal block can be connected over the shortest distance, and because the thermoswitch and the terminal block are connected via a heat insulating material, the impact between the two is alleviated, and the terminal block is less affected by heat, which is an excellent effect.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a sanitary washer that is an embodiment of the present invention, Fig. 2 is a vertical sectional view of the main parts of the same, Fig. 3 is a bottom view with the back plate removed, and Fig. 4 is a Figure 3 is a cross-sectional view of the main parts taken along line AA, Figure 5 is a top view with the tank removed, Figure 6 is a cross-sectional view of the main parts taken along line BB in Figure 5, and Figure 7 is a perspective view of the switch board shown above. , FIG. 8 is a diagram showing the relationship between the base cover and the ventilation cylinder, FIG. 9 is a diagram showing the connection structure of the hose, and FIG. 10 is an electric circuit diagram. 1: Cleaner body, 11: Water tank, 15: Heater, 21, 22: Thermal reed switch (thermo switch), 23: Insulation material, 25: Holding part, 2
6: Terminal block.

Claims (1)

[Scope of Claim for Utility Model Registration] A main body having a water storage tank, a heater that heats the liquid in the water storage tank, and a heater that is in contact with the outer bottom surface of the water storage tank and controls the energization of the heater according to temperature changes of the liquid. a thermoswitch, a heat insulating material covering the thermoswitch, and a wiring terminal block for electrical components electrically connected to the thermoswitch, and integrally formed on the back side of the wiring terminal block. A liquid heating device characterized in that the wiring terminal block is fixed to the water tank so as to press and hold the heat insulating material with a holding part.