JPH0265024A - Flowing water detecting device - Google Patents

Abstract

PURPOSE:To enable to simplify the piping structure as well as prevent the chattering and the abnormal sound of a detector caused by the flowing water pressure by installing the title main body and a float in a tank. CONSTITUTION:A guide part 40 extended to the inflow port 21 of a tank 17 and a switch member 41 for generating flowing water detection signals are provided at the main body 37 installed in the tank for reserving flowing water, and the guide part 40 is provided with a float 44 that floats by the pressure of flowing water from the inflow part 21 so as to generate the flowing water detection signals. A tubular member 36 is further disposed in the tank such as to surround the float 44, that is, the influence of the flowing water in the tank to the float 44 is cut off by the tubular member 36 and the flow of the flowing water that flows in from the inflow port 21 and acts on the float 44 is restricted at the opening part 49 of the tubular member 36. Accordingly, the float 44 is held standstill in the floating position and the vibration is inhibited so that the abnormal sound of the float 44 and the chattering of the switch member 41 are prevented as well as the connecting structure of a pipeline can be simplified by installing a flowing water detecting device 20 in the tank.

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 in particular, to a flowing water detection device that can prevent chattering and abnormal sounds of the detector due to flowing water pressure.

[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.

Figure 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
), the electromagnetic piece (59) is placed on the hot water tank (
(51) is the upper water level detector installed, (60) is the lower water level detector, and (61) is excited and demagnetized by signals from the upper water level detectors (5) to control the opening/closing of the solenoid valve (57). (62) is a relay that is excited and demagnetized by the signal from the lower water level detector (60) to control opening and closing of the solenoid valve (58); (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 configured as described above, at night, the hot water in the hot water storage tank (51) is maintained at a full state 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 a 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,
The lake is circulated from the hot water storage tank (51) through a circulation pump (52), a non-return valve (53), a temperature riser (54), and then back to the hot water storage tank (51) again through a heat retention circuit. 5
4), it is heated by an electric heater (55).

While the hot water is being circulated, the flow switch (63) detects the flowing water, and the circulation pump (52) and electric heater (55) are activated.
) is kept in operation. In addition, if the circulation of the lagoon stops for some reason, the flow switch (63) detects this and the circulation pump (52) and electric heater (55)
Stop the power supply to prevent abnormal heating of each part.

[Problems to be Solved by the Invention] However, in the conventional flowing water detection device, the flow switch (63) is provided in the middle of the piping, that is, on the connecting pipe (64), so the connection configuration of the piping is complicated. In addition, 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 also prevent chattering and abnormal sounds of the detector due to flowing water pressure. .

[Means for Solving the Problems] A running water detection device according to the present invention includes a main body installed in a tank that stores running water, a guide section that extends vertically above the inlet of the tank, and a running water detection signal that generates a running water detection signal. A switch member having a specific gravity of 1 is provided in the guide section to float under the pressure of running water from the inlet and generate a running water detection signal from the switch member.
A cylindrical member is disposed in the tank so as to support a larger flow 1~ so as to be able to move up and down, and to surround the float, and a part of the flowing water from the inflow port is flowed into the lower end of the cylindrical member. In addition to providing an opening for guiding water to the pipes 1 to 1, holes are formed in the side wall of the cylindrical member for guiding the flowing water introduced from the opening to the outside.

[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 shape can be made smaller. Moreover, the influence of the flowing water in the tank on the flow 1~ is blocked by the cylindrical member, and the flow rate of the flowing water that flows in from the inlet and acts on the float is restricted by the opening of the cylindrical member. is held substantially stationary at the floating position, its vibration is suppressed, and abnormal noise of the float and chattering of the switch member are prevented.

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

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

In Figure 2, (1) is the case tank 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, and (4) is the feeder. The oil pipe (5) is a combustor with a built-in combustion tube (6), and (7) is the combustion tube (6).
This heater has a built-in 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 (
a blower pipe that sends air from (12) to the combustion tube (6); (15)
) 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 sent to the hot water heating heat exchanger (8)) easy pipe (
A distern tank (16) is connected to the distern tank (18) and stores the turbid water (19);
), and (20) is a water flow detector that detects the flow of warm water (19) from the inlet (21) of the cistern tank (17). This is a temperature sensor placed on the hot water pipe (18).

(22) is the outlet (2) of the distern tank (17).
a circulation pump connected to 3) via a hot water pipe (24);
(25) is a heat radiating heat exchanger connected to the circulation pump (22) via a hot water pipe (26), and radiating fins (
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 connected to a hot water flow pipe of a floor heating system (not shown), and the water is circulated through the flow rate control valve (32), the hot water supply pipe (33), and the water supply pipe (26>). It is connected to the pump (22). (34) is an inlet connection part that is connected to the hot water return pipe of the floor heating device, and the hot water heating It is connected to a heat exchanger (8).

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
(42) is an upper stopper formed at the connection part between the guide tube (40) and the main body (37); (43) is the guide tube (40);
) is secured to the lower end of the lower stopper. (41)
(47) is the reed switch (41) installed in the guide tube (40) for generating a flowing water detection signal.
A lead wire (48) extends from the lead wire (47).
This is a cap that locks onto the upper part of the main body (37).

(44) is the lower stopper (43) and the upper stopper (
42) is inserted into and supported by the guide cylinder (40) so as to be able to move downward -L, and is formed into a cylindrical shape from a material with a specific gravity greater than 1, with a The float (4) is heated by the pressure of the hot water (19) from the inlet (21).
4) is provided with an annular magnet (45) that generates a water flow detection signal from the reed switch (41) when it floats toward the upper stopper (42).

(36) is a cylindrical member disposed in the distern tank (17) so as to surround the float (44) and the main body (37), and its upper end is connected to the main body (37) with the screw (39). ) is integrally formed with a flange portion (36a) to be attached to the distern tank (17), and a flange portion (36a) is integrally formed at the lower end to guide a portion of the hot water (19) from the inlet (21) to the lower surface of the float (44). An opening (49) is formed. A plurality of (50) are formed on the side wall of the cylindrical member (36) at upper and lower positions corresponding to the reed switch (41), and the hot water (19) introduced from the opening (49) is directed to the cylindrical member (50). 36) A hole leading to the outside of (
46) is an air vent hole formed in the upper part of the side wall of the cylindrical member (36). Incidentally, the diameter of the cylindrical member (36) is set to be slightly larger than the diameter of the inlet (21).

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

In Fig. 2, when the combustion cylinder (6) of the combustor (5) receives fuel supply from the fuel pump (3) and air supply from the combustion air blower IN (12) and undergoes combustion operation, the heat The water in the hot water heating heat exchanger (8) is heated, and the heated hot water is transferred from the inlet (21) to the distillation tank (17) via the hot water pipe (18) by the operation of the circulation pump (22). ).

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

The hot water (19) discharged from the circulation pump (22) is sent 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 the rotation of a convection fan (2B). Therefore, the entire room can be uniformly heated with relatively low-temperature warm air corresponding to the temperature of the hot flowing water (19).

In addition, the hot water (19) after heat radiation passes through the reflux pipe (30>) and refluxes to the hot water heating heat exchanger (8).

On the other hand, when using a floor heating device (not shown), the warm water (19) discharged from the circulation pump (22) 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) passes through the return pipe of the floor heating system and returns from the inlet connection (34) to the hot water heating heat exchanger (8) via the return pipe (35) and the return pipe (30).Therefore, a single heat source Indoor heating and floor heating can be performed efficiently.

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). That is, as shown in FIG.
When warm water (19) flows into the interior, the warm water (1)
A part of the water passes through the opening (49) of the cylindrical member (36) and hits the lower surface of the float (44), and the pressure of the hot water (19) causes the float (44) to move along the guide tube (40). The annular magnet (45) of the float (44)
The reed switch (41) in the guide tube (40) is turned on and generates a flowing water detection signal, and in response to this flowing water detection signal, the combustion tube (6) of the combustor (5) is activated to perform the above-mentioned operation. Heating operation continues.

In this case, the cylindrical member (36) has openings (four) and holes (five).
0> is formed, so that only the - part of the warm water (19) flowing in from the inlet (21) floats (44).
), and the rest are guided to the outside of the cylindrical member (36). Therefore, the jet pressure of the hot water (19) acting on the flows 1 to (44) is reduced, and the influence of pulsation of the hot water (19) is alleviated. Moreover, since the flow 1-(44) is surrounded by the cylindrical member (36), the hot water (1-1) in the distern tank (17) is
The influence of flow 9) on flow 1-(44) is also blocked. Therefore, the float (44) is held almost stationary at the floating position, and its photographing is suppressed, and the chattering of the reed switch (41) and the float (44) are suppressed.
This prevents the occurrence of a contact sound between the float (44) and the guide portion (40), and a collision sound between the float (44) and the upper stopper (42).

On the other hand, if the circulation pump (22) stops abnormally due to a malfunction, etc.
Alternatively, if the flow of the hot water (19) is blocked in the middle of the piping for some reason and the pressure of the hot water (19) at the inlet (21) of the distillation tank (17) decreases, the specific gravity may become less than 1. The large flow 1-(44) sinks under its own weight onto the lower part 1~flange (43), and the reed switch (4)
1> is turned off, and the operation of the combustion cylinder (6) is stopped. Therefore, it is possible to prevent abnormal heating of the various ducts due to abnormal stoppage of the circulation pump (22) or the like.

In this way, the running water detection device of this embodiment can detect warm running water (19
) is connected to the main body (37) installed in the distern tank (17) that stores the distern tank (17).
21) A guide tube (40) extending vertically above and a reed switch (41) as a switch member that generates a flowing water detection signal are provided, and the guide tube (40) has an inlet (21).
A float (44) whose specific gravity is greater than 1 is movably supported and surrounds the float (44), which floats under the pressure of hot water (19) from the reed switch (41) and generates a water flow detection signal from the reed switch (41). Like Jistern Tank (17)
), a cylindrical member (36) is disposed within the cylindrical member (36
) is provided with an opening (49) for guiding a portion of the hot water (19) from the inlet (21) to the float (44>), and an opening (49) is provided in the side wall of the cylindrical member (36). )
A hole (50) is formed to lead out the hot water (19) introduced from the tube to the outside of the cylindrical member (36).

Therefore, according to the above embodiment, the running water detector (20)
Since it can be installed inside the gas turbine tank (17), the piping connection configuration of the hot water hot air heater can be simplified, and
This eliminates the need for a storage space for the flowing water detector (20) in the piping space, contributing to miniaturization of the product shape of the hot water hot air heater.

Moreover, the jet pressure of the hot water (19) acting on the float (44) is reduced and stabilized by the action of the cylindrical member (36), and the flow of the hot water (19) in the gas turbine tank (17) is reduced and stabilized. Since the influence of the float (44) on the float (44) is also blocked, it is possible to suppress the photographing of the float (44) during floating, thereby preventing chattering of the reed switch (41) and abnormal noise of the float (44).

By the way, in the main body of the above embodiment, which is installed in a tank that stores running water and has a guide section that extends vertically above the inlet of the tank and a switch member that generates a running water detection signal, the guide section has a cylindrical shape. However, when implementing the present invention, the switch member may be molded.

Further, a float having a specific gravity of more than 1, which is vertically movably supported by the guide part of the above embodiment, floats under the pressure of the flowing water from the inlet, and generates a flowing water detection signal from the switch member,
This is a ring-shaped magnet attached to a float.
1 to itself may be formed from a ferromagnetic material such as synthetic resin or synthetic rubber.

It is arranged in the tank so as to surround the float of the above embodiment, has an opening at the lower end for guiding a part of the flowing water from the inlet to the float, and has the flowing water introduced from the opening on the side wall. Although the cylindrical member in which the hole for guiding the air to the outside is formed has a space for accommodating air, the space for accommodating air may be eliminated when implementing the present invention.

In addition, although the reed switch (41) was used as the switch member in the above embodiment, when implementing the present invention,
The present invention is not limited to this, and various switches having a function of generating a flowing water detection signal when the float (44) floats can be used.

[Effects of the Invention] As described above, the flowing water detection device of the present invention includes a main body installed in a tank that stores flowing water, a guide portion that extends vertically above the inlet of the tank, and a flowing water detection signal that generates a flowing water detection signal. A switch member is provided, and the guide part supports vertically movably a float having a specific gravity greater than 1, which floats up under the pressure of running water from the inlet and generates a running water detection signal from the switch member, and surrounds the float. A cylindrical member is disposed in the tank, and an opening is provided at the lower end of the cylindrical member to guide part of the flowing water from the inlet to the float, and a side wall of the cylindrical member is provided with an opening for guiding part of the flowing water from the inlet to the float. Since it has a hole to guide running water to the outside, it is possible to install the running water detector inside the tank, simplifying the piping connection configuration, and eliminating the need for storage space for the running water detector in the piping space. hand,
This can contribute to the miniaturization of the product shape, and in addition, the cylindrical member can suppress vibrations of the flow 1~ during floating, thereby preventing abnormal noise of the flow 1~ and chattering of the switch member.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a running water detection device according to an embodiment of the present invention, Fig. 2 is a diagram illustrating the configuration of a hot water hot air heater equipped with the running water detection device of Fig. 1, and Fig. 3 is a diagram showing a conventional This is a piping section for a hot water system equipped with a running water detection device. In the figure, 17: Cistern tank, 20: Flowing water detector, 21: Inlet, 36: Cylindrical member, 37: Main body,
40: Guide tube, 41: Reed switch, 44
: Float, 49: Opening, 50: Required by hole. In the drawings, the same reference numerals and the same symbols indicate the same or equivalent parts. 17: Cistern tank 20: Flowing water detector 37: Motoichiki 40: Guide tube agent Patent attorney Masuo Oiwa and 2 others

Claims (1)

[Claims] (1) A main body that is installed in a tank that stores running water and has a guide section that extends vertically above the inlet of the tank, and a switch member that generates a running water detection signal, and is supported so as to be movable up and down in the guide section. a float having a specific gravity greater than 1, which floats under the pressure of flowing water from the inlet and generates a flowing water detection signal from the switch member; A cylindrical member having an opening for guiding a portion of the flowing water to the float, and a cylindrical member having a hole formed in a side wall for guiding the flowing water introduced from the opening to the outside. Device.