JPH0265026A - Flowing water detecting device - Google Patents

Abstract

PURPOSE:To prevent the impact sound between a float that floats by the pressure of flowing water and an upper stopper by providing a sound proofing member between the float and the upper stopper. CONSTITUTION:A guide part 40 extended between an upper stopper 42 and a lower stopper 43 and a switch member 41 for generating flowing water detection signals are provided at a main body 37 installed above the inflow port 21 of a tank for reserving flowing water. A float 44 that floats toward the upper stopper 42 by the pressure of the flowing water from the inflow port and generates the flowing water detection signals is supported at the guide part 40 in the vertically movable state. A sound proofing member 46 is further interposed between the float 44 and the upper stopper 42. The impact sound between the float 44 and the upper stopper 42 can be thus prevented.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a running water system that is installed in a running water storage tank of a hot water system or a cold water system, such as a hot water hot air heater or an electric water heater, to detect the flow of running water. The present invention relates to a detection device, and particularly relates to a running water detection device that can prevent the sound generated by a float rising under the pressure of running water.

[Prior art] As a conventional flowing water detection device of this type,
An example of this technique is disclosed in Japanese Patent Publication No. 001.

FIG. 3 is a piping diagram of a hot water system equipped with a conventional flowing water detection device.

In the figure, (51) is a hot water storage tank, (52) is a circulation pump, (53) is a check valve, and (54) is an electric heater (
55) and a temperature riser equipped with a temperature sensor (65), (56
) is the water supply pipe, (57) and (58) are the water supply pipes (56
), (59) is a solenoid valve disposed on the hot water storage tank (
(51) is an upper water level detector installed, (60) is a lower water level detector, and (61) is excited and demagnetized by a signal from the upper water level detector (59) to control opening and closing of the solenoid valve (57). A relay (62) is excited and demagnetized by a signal from the lower water level detector (60) to control opening and closing of the solenoid valve (58), and (63) is a relay that controls the opening and closing of the solenoid valve (58). (54) is a flow switch provided on the connecting pipe (64).

Next, the operation of the conventional flowing water detection device configured as described above will be explained.

In the hot water system having the above configuration, at night, the hot water storage tank (51) is kept full of water by the upper water level detector (59), the relay (61), and the electromagnetic valve (57).

Also, during the day, lower water level detector (60) and relay (62
> and the solenoid valve (58), a relatively small amount of hot water is stored in the hot water storage tank (51).

When the circulation pump (52) is started in this storage state,
Hot water is circulated from the hot water storage tank (51) through a circulation pump (52), a backflow prevention valve (53), a temperature riser (54), and then back to the hot water storage tank (51) through a heat retention circuit, 5
4), it is heated by an electric heater (55).

During the circulation, the flow switch (63) detects the flowing water in the connecting pipe (64), and the circulation pump (52)
and the electric heater (55) are kept in operation. Also,
If the circulation of the lagoon stops for some reason, the flow switch (63) detects this and stops the power supply to the circulation pump (52) and electric heater (55) to prevent abnormal heating of each part. do.

[Problems to be Solved by the Invention] However, in the conventional flowing water detection device, since the flow switch (63) is provided in the middle of the piping, that is, on the connecting pipe (64), the connection configuration of the piping becomes complicated. Instead, it was necessary to secure a dedicated storage space for the flow switch (63) in the middle of the piping, which led to an increase in the size of the product.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a flowing water detection device that can simplify the piping configuration, contribute to miniaturization of the product shape, and prevent the generation of abnormal noise from the mechanism for this purpose.

[Means for Solving the Problems] A flowing water detection device according to the present invention includes a main body installed above an inlet of a tank that stores flowing water, and a guide portion extending between an upper stopper and a lower stopper. and a switch member that generates a flowing water detection signal, and the guide section has a float having a specific gravity greater than 1 that floats toward the upper stopper due to the pressure of the flowing water from the inlet and generates the flowing water detection signal from the switch member. In addition to movably supporting the float, a soundproofing member is interposed between the float and the upper stopper to prevent collision noise between the two.

[Function] In the present invention, since the main body and the float are installed in the tank, the piping connection configuration is simplified, and
Since there is no need for a storage space for the flowing water detector in the piping space, the product can be made smaller in size, and the soundproofing member prevents collision noise between the float and the upper stopper.

[Example] The present invention will be explained in detail below.

FIG. 1 is a partially cutaway front view of a running water detection device according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram of the configuration of a hot water hot air heater equipped with the running water detection device of FIG. 1.

In Fig. 2, (1) is the casing of the hot water hot air heater, (2) is the oil level regulator connected to a separate fuel tank (not shown), (3) is the fuel pump, (4) is the oil pipe, (5) is a combustor with built-in combustion tube (6), and (7) is the combustion tube (
This is a heater incorporating a heat exchanger (8) for heating hot water heated by 6>. (9) is the intake port (10) and the exhaust port (
11), and (12) is the intake and exhaust pipe (12).
9) is a combustion blower connected to the intake port (10) via an intake hose (13); (14) is the combustion blower Ia;
A blower pipe that sends air from (12) to the combustion tube (6〉), (1
5) is an exhaust pipe that guides the exhaust gas that has passed through the hot water heating heat exchanger (8) to the exhaust port (11) of the intake and exhaust pipe (9).

(17) is a water supply pipe (1) connected to the hot water heating heat exchanger (8).
B) A distern tank (16) is connected to the distern tank (17) and covers the warm flowing water (19).
The water level sensor (20) attached to the tank is a water flow detector that detects the flow of warm water (19) from the inlet (21) of the distillation tank (17). Note that (two) humidity detectors are disposed on the hot water pipe (18).

(22) is the outlet (2) of the distern tank (17).
(25) is connected to the circulation pump (22) via the hot water pipe (2/1.).
This is a heat exchanger for heat dissipation connected via 6>, and is composed of a heat dissipation fin (27) and a convection fan (28). (30) is a reflux pipe that returns the hot water (19) heat radiated by the heat radiating heat exchanger (25) to the hot water heating heat exchanger (8).

Note that (31) is an outlet connection part that is connected to a hot water outflow pipe of a floor heating system (not shown), and must be connected to a flow rate control valve (32), a hot water supply pipe (33), and the hot water supply pipe (26). It is connected to a circulation pump (22). (34) is an inlet connection part connected to the hot water return pipe of the floor heating device, and is connected to the hot water heating heat exchanger (8) via the return pipe (35) and the return pipe (30). There is.

In FIG. 1, (37) is the flowing water detection device (20).
It is the main body of the body, and the screws (3
9) and the inlet (21) of the distern tank (17).
is installed above. (40) is the main body (37)
a guide tube protruding toward the inlet (21) on the lower surface of the
(41) is a reed switch for generating a flowing water detection signal built into the guide tube (40), (47) is a lead wire extending from the reed switch (41), and (48> is the lead wire (47) connected to the main body. (42) is the upper part formed at the connection part between the main body (37) and the guide tube (40), and (43) is the collar that locks on the upper part of the guide tube (40). ) is a lower stopper that is locked to the lower end of the

(44) is a float inserted and supported in the guide tube (40) so as to be movable up and down between the lower stopper (43) and the upper stopper (42), and is made of a material having a specific gravity of less than 1. A float (44) is formed at the upper part of the inner peripheral surface by the pressure of the hot water (19) from the inlet (21).
) can be seen as an annular magnet '5 (45) 7') KK which generates a flowing water detection signal from the reed switch (41) when the reed switch (41) floats toward the upper spacing (42).

(46) is a soundproofing member inserted from the lower end of the guide tube (40) and glued to the upper stopper (42), and is designed to prevent collision noise between the floating moe float (44> and the upper stopper (42)). It is formed into a ring shape from a flexible material such as rubber.

Next, the operation of the running water detection device of this embodiment configured as described above will be explained.

In FIG. 2, the combustor (
When the combustion tube (6) in 5) is operated for combustion, the water in the hot water heating heat exchanger (8) is heated by the heat, and the heated hot water is transferred to the hot water pipe by the operation of the circulation pump (22). It flows into the distern tank (17) from the inlet (21) via (18).

The water level of the warm water (19) in the gas turbine tank (17) is always kept constant by the water level sensor (16), and the warm water (19) corresponding to the supply flow rate flows from the outlet (23) to the hot water pipe (24). ) to the circulation pump (22).

The hot water discharged from the circulation pump (22) (19) is connected to the hot water pipe (2
6) and is supplied to a heat radiation heat exchanger (25), which heats the surrounding air via radiation fins (27), and the heated air is discharged into the room by rotation of a convection fan (28). Therefore, the entire room can be uniformly heated with relatively low-temperature warm air corresponding to the temperature of the hot flowing water (19).

The warm water 19) after cooling is returned to the hot water heating heat exchanger (8) through the reflux pipe (30).

On the other hand, when using a floor heating device (not shown), the hot water discharged from the circulation pump (22) (19) is connected to the hot water pipe (26).
and hot water supply pipe (33), the flow rate is adjusted by the flow rate control valve (32), and is supplied from the outlet connection part (31) to the outflow pipe of the floor heating system, and the hot water after floor heating (19) The water passes through the reflux pipe of the floor heating device and returns from the inlet connection (34) to the hot water heating heat exchanger (8) via the return pipe (35) and the reflux pipe (30). Therefore, indoor heating and floor heating can be efficiently performed using a single heat source.

By the way, the hot water (1
The flow in step 9) is detected by a water flow detector (20) installed in the cistern tank (17). In other words, as shown in Fig. 1, from the inlet (21) to the distern tank (17).
When warm water (19) flows into the interior and covers it, the warm water (19)
The floats 1 to (44) are floated along the guide cylinder (40) by the jet pressure of
In step 5), the reed switch (41) in the guide tube (40) is turned on to generate a flowing water detection signal. Then, in response to this flowing water detection signal, the combustion tube (6) of the combustor (5>) is operated, and the heating operation described above is continued.

When the float (44) floats to turn on the reed switch (41), the warm water (1) at the inlet (21)
9) The float (44) repeatedly moves up and down in the vicinity of the upper stop 1 to the collar (42) due to the fluctuation of the jet pressure. However, the soundproofing member (4) made of a flexible material is attached to the lower surface of the upper stopper (42).
6), it is possible to prevent the occurrence of a "con-con" collision sound between the float (44) and the upper part 1 to the collar (42).

On the other hand, if the circulation pump (22) stops abnormally due to a malfunction, etc.
Alternatively, if the flow of hot water (19) is obstructed in the middle of the piping for some reason and the pressure of hot water (19) at the inlet (21) of the distillation tank (17) decreases, the specific gravity may become less than 1. The large float (44) sinks onto the lower stopper (43) due to its own weight, and the reed switch (41)
is turned off, and the operation of the combustion tube (6>) is stopped. Therefore, it is possible to prevent abnormal heating of various components due to abnormal stoppage of the circulation pump (22), etc.

In this way, the flowing water detection device of the present embodiment has the inlet port (21
) is attached to the main body (37) installed above the upper stopper (4).
2> and the lower stopper (43).
0) and a reed switch (41) as a switch member that generates a water flow detection signal. and float up to the reed switch (41)
A float (44) with a specific gravity greater than 1 that generates a flowing water detection signal is supported vertically and movably, and a soundproof device is provided between the float (44) and the upper stopper (42) to prevent collision noise between the two. A member (46) is provided.

Therefore, according to the above embodiment, the running water detector (20)
can be installed inside the cistern tank (17), simplifying the piping connection configuration of the hot water hot air heater, and eliminating the need for storage space for the flowing water detector (20) in the piping space. It can contribute to the miniaturization of the product shape of water hot air heaters. Moreover, although the structure is such that the flow of warm water (19) is detected by the movement of the float (44) in the distern tank (17), the soundproofing member (46)
> can efficiently prevent the collision sound between the float (44) and the upper stopper (42) and the resulting resonance sound of the distern tank (17).

By the way, in the above embodiment, a reed switch (41) was used as the switch member, but when implementing the present invention, the present invention is not limited to this, and a float (44)
Various types of switches can be used that have the function of generating a flowing water detection signal when the robot ascends to the surface.

Further, the upper stopper (42) of the above embodiment is the main body (37).
) and the guide tube (40), but when carrying out the present invention, the floating position of the float (44) is not limited to this. For example, if the distern tank (17) is deep and the guide part is shaped accordingly, an upper stopper may be provided in the middle of the guide part. Can be done.

Furthermore, in the above embodiment, the soundproofing member (46) is bonded to the lower surfaces of the upper step 1 to the collar (42), but when carrying out the present invention, the soundproofing member (46) is not limited to this. A sound insulating member may be glued to the upper surface of the float (44), or a sound insulating member may be loosely inserted into the guide portion so as to move freely between the float (44) and the upper lip (42). ) is entirely molded from a flexible material such as rubber with a specific gravity of less than 1, substantially the same effects as in the above embodiment can be obtained.

[Effects of the Invention] As described above, the flowing water detection device of the present invention has a main body installed above the inlet of a tank that stores flowing water, and a guide portion of a predetermined length between the upper stopper and the lower stopper. A switch member that generates a flowing water detection signal is provided, and the guide section has a float having a specific gravity greater than 1 that floats toward the upper stopper due to the pressure of the flowing water from the inlet and generates the flowing water detection signal from the switch member. In addition, a soundproofing member is installed between the float and the upper stopper to prevent collision noise between the float and the upper stopper, so a water flow detector is installed inside the tank and the piping connection configuration is adjusted. Not only can it be simplified, but the storage space for the flowing water detector in the piping space can be eliminated, contributing to the miniaturization of the loading shape.Moreover, the soundproofing material can efficiently reduce the collision noise between the float and the upper spring 1 to the collar. It can be prevented.

[Brief explanation of the drawing]

Fig. 1 is a partially broken pressure surface view of a running water detection device according to an embodiment of the present invention, Fig. 2 is an explanatory diagram of the configuration of a hot water hot air heater equipped with the running water detection device of Fig. 1, and Fig. 3 is a FIG. 2 is a piping diagram of a hot water device equipped with a conventional flowing water detection device. In the figure, 17: Cistern tank, 20: Flowing water detector, 21: Inlet, 37: Main body, 40: Guide cylinder,
41: Reed switch, 42: Upper part 1~Brim,
43: Lower stopper, 44: Float, 46
: Soundproofing material. In the drawings, the same reference numerals and the same symbols indicate the same or corresponding parts. Figure 3 Agent: Patent attorney Masuo Hitoyoshi and 2 others

Claims (1)

[Claims] (1) A main body that is installed above the inlet of a tank that stores running water and has a guide section with a predetermined length between an upper stopper and a lower stopper, and a switch member that generates a running water detection signal, and the guide section. The switch member has a specific gravity of 1 which floats toward the upper stopper due to the pressure of the flowing water from the inlet and generates a flowing water detection signal from the switch member.
A flowing water detection device comprising: a larger float; and a soundproofing member interposed between the float and an upper stopper to prevent collision noise between the float and the upper stopper during floating.