JPH0413631Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a bathtub device equipped with a water level detection element for detecting the water level in the bathtub.

Conventional configuration and problems When boiling a bath, the common method is to supply water to the bathtub, stop the water supply when the water level in the bathtub reaches a predetermined level, and then ignite a gas bath pot or the like to boil the water. .

However, while continuing to supply water to the bathtub, while doing other work, you may end up supplying more than the specified amount of water, and in some cases, water may overflow from the bathtub, resulting in wasted water. There was a problem with becoming.

In order to solve this problem, a bathtub device as shown in FIG. 1 has been devised.

In FIG. 1, 1 is a bathtub and 2 is a bathtub. 3 is a pair of electrode plates 4 as water level detection elements.
A, 4b and a sensing element unit integrally equipped with a hot water temperature sensing element 5 such as a thermistor or thermocouple; 6 is a lead wire connected to the sensing element unit 3; One end of this lead wire 6 is electrically connected to the electrode plates 4a, 4b and the hot water temperature detection element 5, and the other end detects the current flowing between the pair of electrode plates 4a, 4b and generates a buzzer (not shown). It was connected to a control circuit (not shown) which detects that the hot water temperature detection element 5 detects a predetermined water temperature and sounds a buzzer (not shown).

To explain how to use the above configuration, the water level sensing element unit 3 is placed in the bathtub 1 so that the electrode plates 4a and 4b of the sensing element unit 3 are positioned at a predetermined water level, and water supply is started. .
When the water level in the bathtub 1 reaches a predetermined water level, the pair of electrode plates 4a and 4b are immersed in water, and a current flows between the pair of electrode plates 4a and 4b through this water, and the control circuit detects this current. The user can sound a buzzer to notify that the amount of water supplied to the bathtub 1 is a predetermined amount.

However, when water is being supplied, the surface of the water is undulated by the water supply, and even though the amount of water supply has not reached the predetermined amount, the pair of electrode plates 4a, 4b
The problem was that the buzzer would become dull due to water soaking.

Purpose of the invention The present invention aims to eliminate the above-mentioned conventional drawbacks and provide a bathtub device equipped with a water level detection element that does not malfunction even if the water surface ripples due to water supply.

Composition of the invention The present invention fixes a sensing element mounting body at a position below the top end of the bathtub with one side in contact with the inner surface of the side wall of the bathtub, and this sensing element mounting body is fixed on the surface opposite to the inner surface of the side wall of the bathtub. A recess was formed in the vertical direction by opening the upper and lower surfaces in the middle, and a water level detection element for detecting the water level was installed inside this recess, and the lead wire of this water level detection element penetrated the side wall of the bathtub and led out of the bathtub. Even if the water surface ripples when water is supplied, the detection element mounting body prevents the water level in the recess from rising and falling, and prevents the water level detection element from submerging in water and malfunctioning until the water supply reaches the specified amount. This is what I did.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to FIGS. 2 to 4.

In FIG. 2, 10 is a bathtub, and 11 is a bath lid. Reference numeral 12 denotes a sensing element mounting body attached to the inner surface of the side wall of the bathtub 10, and is made of an insulator such as resin. As shown in FIG. 3, this detection element mounting body 12 is located on a surface facing the inner surface of the side wall of the bathtub 10, and has a pair of lower opening recesses 13 formed in its lower part, and is continuous with the recesses 13. A thin communication portion 14 is formed at the top. A pair of electrode plates 15a and 15b as water level detection elements are provided in the pair of recesses 13, and a hot water temperature detection element 16 is provided in one of the recesses 13, located below the electrode plate 15b. It is being Reference numeral 17 is a male screw provided on the sensing element mounting body 12, and has a cavity. The sensing element mounting body 12 is brought into contact with the inner surface of the side wall of the bathtub 10 via the packing 18, the male screw 10 is passed through the inner wall, and the nut 19 is screwed into the male thread 17 from the outside of the same side wall. It is attached to the side wall of the bathtub 10. A lead wire 20 is electrically connected to the electrode plates 15a, 15b and the hot water temperature sensing element 16, and is led out through the cavity of the male screw 17. In addition, the electrode plates 15a and 15b, the hot water temperature sensing element 16, and the lead wire 2
0 is inserted into a mold when molding the sensing element mounting body 12 and is integrally molded.
The electric circuit of this bathtub device is as shown in FIG. 4, where 21 is a water level detection circuit, 22 is a water level switch provided between the water level detection circuit 21 and electrode plates 15a and 15b, and 23 is a power source. . 24 is a hot water temperature detection circuit, and 25 is a hot water temperature switch provided between the hot water temperature detection circuit 25 and the hot water temperature detection element 16.

Next, the water level switch 22, whose operation in the above configuration will be explained, is closed, water supply is started, and water is stored in the bathtub 10. When the water level in the bathtub 10 rises and approaches a predetermined water level, the water reaches the recess 13. At this time, the water surface in the bathtub 10 ripples due to the water supply, but the electrode plates 15a and 15b
2, the waving phenomenon of the water surface does not extend into the recess 13, and the electrode plates 15a and 15b are not immersed in water at this point. Therefore, no malfunction occurs. When the water supply continues, the water level rises and the electrode plates 15a, 15b are immersed in water. Note that the air in the recess 13 escapes upward through the communication path 14. When the electrode plates 15a and 15b are immersed in water,
A weak current flows between the electrode plates 15a and 15b through this water, and the water level detection circuit 21 detects this current and sounds a buzzer (not shown) to notify that a predetermined amount of water has been supplied. I can do it. After that, the water supply is stopped, the water level switch 22 is opened, the water temperature switch 25 is closed, and the bath lid is placed on the bathtub 10.
Cover with 1 and ignite the bath kettle, etc. When the water in the bathtub 10 is heated and the water temperature reaches a predetermined temperature, the water temperature detection element 16 detects the water temperature, and the water temperature detection circuit 24 detects this and sounds a buzzer (not shown). It can let you know when the water temperature has reached a predetermined temperature. This extinguishes the bathtub, etc., and completes boiling water.

In addition, when boiling water, the bath lid 1 is placed on the bathtub 10.
1, it is possible to prevent heat dissipation from the gap caused by pinching the lead wire between the bathtub and bath lid as in the conventional case, and there is no need to put away the sensing element unit when taking a bath.

Effects of the invention As is clear from the above explanation, even if the water surface in the bathtub ripples due to water supply, the water level sensing element of the invention is surrounded by the sensing element mounting body and the inner surface of the side wall of the bathtub, so that the rippling phenomenon on the horizontal surface does not affect the water level sensing element. This prevents malfunctions and allows accurate water level detection.

In addition, since the lead wire of the water level detection element does not pass between the bathtub and its lid, the lid can be securely closed and water can be boiled efficiently. Since no complicated work is required, it can be made easy to use.

[Brief explanation of the drawing]

Fig. 1 is a partial sectional view of a conventional bathtub device, Fig. 2 is a sectional view of a bathtub device showing an embodiment of the present invention, Fig. 3 is a perspective view of the main parts, and Fig. 4 is the same electric circuit. It is a diagram. 10... Bathtub, 12... Sensing element mounting body, 13
...Recessed portion, 15a, 15b... Electrode plate (water level detection element).

Claims (1)

[Scope of utility model registration request] A sensing element mounting body is fixed at a position below the upper end of the bathtub and one side is in contact with the inner surface of the side wall of the bathtub, and this sensing element mounting body has a top and bottom surface in the middle of the surface facing the inner surface of the side wall of the bathtub. A bathtub device in which a recess is formed in the vertical direction by opening the recess, a water level detection element for detecting the water level is provided in the recess, and a lead wire of the water level detection element is led out of the bathtub by passing through a side wall of the bathtub.