JPH082584Y2 - Sensor mounting structure for surface temperature measurement - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a mounting bracket for a surface temperature measuring sensor that is mounted on the surface of a tank or the like and measures the temperature of hot water inside.

(Prior Art) Conventionally, the surface temperature measuring sensor for measuring the temperature in the tank is mounted by directly fixing the surface temperature measuring sensor to the side surface of the tank with a fastener without using a mounting bracket or the like. It was.

(Problems to be solved by the invention) However, in the case where the surface temperature measuring sensor and the display device, the control device or the like need to be detachable, or the surface temperature measuring sensor needs to be assembled locally. However, there is a problem that a measurement error occurs due to the mounting state, and control and display are not performed due to a mounting error.

Further, there is a problem that the surface temperature measuring sensor and the wire harness are separated by pulling a portion of the wire harness up to the surface temperature measuring sensor.

The present invention provides a mounting bracket for a surface temperature measuring sensor that eliminates the above-mentioned conventional problems.

(Means for Solving the Problems) The problems to be solved by the present invention are as described above.
Next, means for solving the problem will be described.

In the structure in which the hairpin-shaped surface temperature measuring sensor mounting bracket 1 made of spring steel is fixed to the side surface of the object to be measured and fixed in the clamp 15 having the hook-shaped insertion opening, the surface temperature measuring sensor mounting bracket is fixed. 1. A clamp engaging portion 1b having a hairpin-shaped outer surface formed in a concave portion is formed at a central portion in the longitudinal direction of 1, and a clamp 15 is inserted and fitted into the clamp engaging portion 1b formed in the concave portion. Clamp locking part in the longitudinal direction of the measurement sensor mounting bracket 1.
Sensor clamps 1c with convex outer surfaces on both sides of 1b
And a wire harness holding portion 1a.

(Embodiment) An embodiment of the present invention will be described with reference to the accompanying drawings.

In the overall configuration of the shower unit shown in FIG. 1, the shower unit is used as it is in a unit state as a built-in facility of a one-room apartment, or as a shower room attached to a normal residence.

Further, since the hot water is supplied from the electric water heater tank 6, it is possible to supply the hot water at a low electricity rate by the late-night power, the running cost is low, and the shower unit is attached because the gas water heater is not used. In doing so, gas piping work is not necessary, and a ventilation device or the like is not necessary to prevent incomplete combustion of gas.

Further, since the electric water heater has a simple structure including the tank 6 and the heater 20, the corner of the shower unit, which is square in plan view, is formed in the electric water heater chamber B, and the electric water heater tank 6 is provided in that portion. The shower unit as a whole can be installed in any narrow space with only a square installation area.

Further, unlike the gas water heater, the electric water heater does not instantaneously supply the flowing water as hot water, but gradually warms it with a heater and stores it in the tank, so a large capacity tank is used. It was necessary, and by constructing this tank long and installing its lower end on the floor, it became unnecessary to receive the weight of the water heater by the shower unit.

However, in the case of an electric water heater, tap water cannot be instantaneously turned into hot water, so it is used for a long time to make hot water, which is stored in the electric water heater tank 6, and this hot water is used. If you do so, you will not be able to obtain hot water without waiting a certain period of time. Therefore, it is necessary to clearly indicate to the user the remaining amount of hot water in the electric water heater tank 6, and for this purpose, the upper end hot water sensor 4, the midway hot water sensor 5, and the hot water amount display panel 7 are required.

As shown in FIG. 2, a shower elbow 11 is arranged at the lower end of the operation plate 3, and a shower spout 12 is extended from the shower elbow 11 by a flexible pipe.

As shown in FIG. 2, a water amount adjusting handle 8 and a temperature adjusting handle 9 are arranged in the middle portion of the operation plate 3, and the temperature adjusting handle 9 has a temperature of 70 ° C. in the electric water heater tank 6. The temperature of shower hot water is changed by changing the mixing ratio of hot water and tap water.

In addition, the water amount adjusting handle 8 adjusts the amount of the shower hot water after the mixing to stop the water.

On the hot water amount display panel 7, as shown in FIG. 3, a display 7a of "sufficient amount of hot water", a display 7b of "small amount of remaining hot water",
There are 3 displays, "Display of hot water" 7c.

Then, as shown in FIG. 1, a hot water sensor for detecting the three display states is attached to the side wall of the electric water heater tank 6 as the upper end hot water sensor 4 and the midway hot water sensor 5.

The midway hot water sensor 5 is arranged at a height t2 from the lower end of the electric water heater tank 6, and the upper hot water sensor 4 is
Further, it is arranged at a height of t1 from the midway warm water sensor 5 upward. The total height of the electric water heater tank 6 is T.

 Next, description will be given with reference to FIGS. 3, 4, and 5.

When the temperature inside the electric water heater tank 6 reaches a high temperature close to 70 ° C, the upper-end hot water sensor 4 and the midway hot water sensor 5
It is composed of a temperature detection switch that is turned on.

Further, by adjusting the temperature adjusting handle 9, the hot water of 70 ° C. in the electric water heater tank 6 is discharged from the upper end, and the cold water from the tap water is supplied to the lower end of the electric water heater tank 6 by the discharged amount. .

Therefore, cold water is sequentially supplied from the lower end of the electric water heater tank 6, is warmed by the heater 20 in the electric water heater tank 6 and moves upward, and gradually the entire electric water heater tank 6 is heated to 70 ° C or higher. It gets hot. When hot water gradually flows out from the upper end of the electric water heater tank 6, a cold water part 21 of about 20 ° C is formed at the lower end, a high temperature part 23 of about 70 ° C is formed at the upper part, and an intermediate part is formed in the middle part. An intermediate temperature section 22 is formed.

When the heater 20 is warmed by the electric power and all of the electric water heater tank 6 becomes the high temperature part 23, both the middle part hot water sensor 5 and the upper end hot water sensor 4 are turned on, and the "sufficient hot water amount" is displayed on the hot water amount display panel 7. 7a lights up.

Then, the hot water from the shower spout 12 is discharged, so that the high-temperature portion 23 is gradually reduced, and the electric water heater tank 6
When the intermediate temperature part 22 reaches the part of the midway hot water sensor 5 located at the position of t2 from below, the midway hot water sensor 5 that was on until then is turned off and the "sufficient amount of water" display 7a Is turned off, and the "remaining small amount of hot water" display 7b on the hot water amount display panel 7 is displayed.

When hot water is further used, the intermediate temperature part 22 and the cold water part 21 rise, and the upper end hot water sensor 4, which has been ON until then, is also OFF.

As a result, the display 7b of "remaining little water" is also turned off
Display 7c of "no hot water" lights up.

6 and 7 are a perspective view and a plan cross-sectional view of the electric water heater tank 6, and the mounting states of the upper end hot water sensor 4 and the midway hot water sensor 5 are disclosed.

In order to keep warm water in the electric water heater tank 6, a heat insulating material 13 having a thickness a is coated around the heat insulating material 13.
An opening 13b is provided in a part of. A clamp 15 is fixed to the exposed portion of the electric water heater tank 6 at that portion. The surface temperature measuring sensor mounting bracket 1 is locked to the clamp 15, and the upper surface hot water sensor 4 is mounted on the surface temperature measuring sensor mounting bracket 1.
The midway hot water sensor 5 is locked and fixed.

Then, with the upper end hot water sensor 4 fixed to the surface temperature measuring sensor mounting bracket 1, the removal lid 13a is fitted to cover the exposed portion of the surface of the electric water heater tank 6 again,
Prevents a decrease in heat retention effect.

In FIG. 8, a detachable lid 13a is fitted with the upper end warm water sensor 4 fixed, and in FIG.
It is disclosed that the removal lid 13a is removed from the opening 13b.

Wire harness from between the opening 13b and the removal lid 13a
16 are pulled out.

The upper end hot water sensor 4 is provided with a wire harness 16 and a connecting insertion portion 16a. The upper end hot water sensor 4 is directly locked to the surface temperature measuring sensor mounting bracket 1 when the wire harness 16 is pulled. Since the harness may be cut off from the connecting portion, it is necessary to provide the wire harness 16 with the slack portion C so as to be engaged with the surface temperature measuring sensor mounting bracket 1.

Therefore, in the surface temperature measuring sensor mounting bracket 1 of the present invention, the wire harness holding portion 1a for holding the middle portion of the wire harness 16 in the hairpin-shaped spring steel.
The curved portion and the curved portion of the sensor clamping portion 1c that clamps the upper end hot water sensor 4 are configured.

Instead of sandwiching only the upper-end hot water sensor 4 with the surface temperature measuring sensor mounting bracket 1, the wire harness 16
By sandwiching the middle portion, a slack portion C is formed between the wire harness 16 and the upper end warm water sensor 4 as shown in FIG. 10, and it is possible to prevent disconnection of the wire harness 16 and the upper end warm water sensor 4. .

Further, the work of sandwiching the wire harness 16 and the upper-end hot water sensor 4 between the wire harness sandwiching portion 1a and the sensor sandwiching portion 1c of the surface temperature measuring sensor mounting bracket 1 is performed at another place, and then the surface temperature measuring sensor mounting bracket. 1 can be locked to the clamp 15 fixed to the electric water heater tank 6 at the clamp locking portion 1b.

Since the clamp 15 is fitted on the outside of the clamp engaging portion 1b, the clamping force of the hairpin-shaped surface temperature measuring sensor mounting bracket 1 is increased.

The 11th which holds the upper end warm water sensor 4 between the hairpins
In the case of the illustrated embodiment, the temperature of the surface temperature measuring sensor mounting bracket 1 is indirectly measured after the temperature is transmitted from the electric water heater tank 6 to the surface temperature measuring sensor mounting bracket 1 by heat conduction. Then, when the detection becomes slow, as shown in FIG. 12, another clamp 17 is provided, and the sensor holding portion 1c of the upper end hot water sensor 4 is formed between them, and the upper end hot water sensor 4 is directly connected to the electric water heater tank 6 It may be contacted with.

(Effects of the Invention) Since the present invention is configured as described above, it has the following effects.

First, since the surface temperature measuring sensor mounting bracket 1 is configured in the shape of a hairpin, the clamp locking portion 1b formed in the recess is provided in the clamp 15 at the center of the surface temperature measuring sensor mounting bracket 1 in the longitudinal direction. By inserting it, it is possible to support the sensor part and the part of the wire harness 16 so as to prevent the sensor part and the wire harness 16 from coming off or falling by an appropriate clamping force, and the hairpin-shaped elastic force clamps the part.
The portion of the clamp locking portion 1b inserted in 15 can generate a force that presses the sensor portion against the side surface of the member to be measured, and the sensor portion is always in contact with the wall surface to ensure reliable temperature detection. You can do it.

Secondly, since the clamp engaging portion 1b formed in the concave portion is provided between the wire harness holding portion 1a formed in the convex portion and the sensor holding portion 1c, and is inserted into the clamp 15, the clamp holding portion 1b is formed. It is possible to distribute the clamping force of the part of the wire harness clamping part 1a and the sensor clamping part 1c to substantially the same position on both sides, and both the wire harness clamping part 1a and the sensor clamping part 1c reliably maintain the clamping state. You can do it.

Thirdly, when it is necessary to remove the sensor part or attach a sensor at the construction site, by using the surface temperature measuring sensor mounting bracket 1, the sensor can be easily mounted and the sensor can be mounted. The state can be surely attached without any erroneous operation or erroneous detection.

Fourth, the sensor clamp 1c and the wire harness clamp
Since the slack portion C of the wire harness 16 can be configured by the portion held by the surface temperature measuring sensor mounting bracket 1 by providing 1a, even if the end portion of the wire harness 16 is pulled, the sensor 4 There is no connection or disconnection.

Fifthly, since the work of sandwiching the sensor 4 and the wire harness 16 in the surface temperature measuring sensor mounting bracket 1 is carried out at another place and then mounted on the clamp 15, the upper end hot water sensor is provided in the narrow portion of the opening 13b. It is no longer necessary to perform the detaching work of No. 4.

[Brief description of drawings]

1 is a sectional view of a partition wall 2 and an operation plate 3 between a shower room A and an electric water heater room B, FIG. 2 is a front view of the operation plate 3, and FIG. 3 is an enlarged front view of a hot water amount display panel 7. Figure, 4th
5 and 5 are drawings showing the position of the amount of hot water in the electric water heater tank 6, FIG. 6 is a perspective view of the electric water heater tank 6, and FIG.
The figure is a sectional view of the electric water heater tank 6, and FIG. 8 is a perspective view of the heat insulating material 13 covering the outer periphery of the tank 6 of the electric water heater.
FIG. 9 is a perspective view of the heat insulating material 13 with the removal lid 13a removed, and FIG. 10 is a surface temperature measuring sensor mounting bracket 1 and an upper end hot water sensor 4 attached to the portion with the removal lid 13a removed.
Front view, FIG. 11 is a plan view of the same, FIG. 12 is a plan view of an embodiment in which the upper end hot water sensor 4 is directly attached to the electric water heater tank 6, and FIG. 13 is fixed to the surface of the electric water heater tank 6. FIG. 14 is a side sectional view of the clamp 15 shown in FIG.
FIG. 15 is a plan view of the surface temperature measuring sensor mounting bracket 1,
FIG. 16 is a front view of the same, and FIG. 17 is a front view of the upper-end hot water sensor 4 and the wire harness 16. 1 …… Surface temperature measurement sensor mounting bracket 1a …… Wire harness clamping part 1b …… Clamp locking part 1c …… Sensor clamping part 2 …… Separating wall 3 …… Operating plate 4 …… Upper end hot water sensor 5 …… Midway part Hot water sensor 6 ... Electric water heater tank

Claims (1)

[Scope of utility model registration request] 1. A structure in which a hairpin-shaped surface temperature measuring sensor mounting bracket 1 made of spring steel is fixed to a side surface of an object to be measured and is fixedly inserted in a clamp 15 having a hook-shaped insertion opening. At the center of the temperature measuring sensor mounting bracket 1 in the longitudinal direction, a clamp engaging portion 1b having a concave hairpin-shaped outer surface is formed, and a clamp 15 is inserted into the clamp engaging portion 1b formed in the concave. In addition, in the longitudinal direction of the surface temperature measuring sensor mounting bracket 1, a sensor holding portion 1c and a wire harness holding portion 1a each having a convex outer surface are arranged on both sides of the clamp engaging portion 1b. Sensor mounting structure for surface temperature measurement.