JPH0282422A - Flowing water detecting device - Google Patents

Abstract

PURPOSE:To simplify the structure of piping as well as miniaturizing a product in shape, and to prevent a detector from its chattering and abnormal sounding, originated in flowing water pressure, by providing a float which is floated under the pressure of flowing water from an inflow port so as to allow generation of a flowing water detection result signal, and providing a vane portion to the float. CONSTITUTION:The device in the title comprises a body 37 arranged above an inflow port 21 of a bank in which flowing water is stored, a switch member 41 mounted onto the body 37, a float 44 supported for rotation and vertical movements by a guide portion 40 and being floated under the pressure of the flowing water from an inflow port 21 so as to allow the switch member 41 to generate a flowing water detection result signal, and a vane portion 46 provided to the float 44 and being subjected to pressure in the flowing water from the inflow port 21 to turn the float 44 round the axis of the guide portion 40. Thus, connection structure of piping is simplified, while making a flowing water detector accommodation subspace in the space of piping unnecessary to miniaturize the device product in shape as well as preventing the float 44 from abnormally sounding and the switch member 41 from chattering.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a running water detection device that is installed in a running water storage tank of a water heater such as a hot water hot air heater or an electric water heater to detect the flow of running water. It's about.

[Prior art] As a conventional flowing water detection device of this type,
The technology published in the January 2000 gazette can be mentioned.

FIG. 4 is a piping diagram of a hot water system equipped with a conventional flowing water detection device.

In the figure, (51) is the hot water storage tank, (52) is the circulation pump, (53) is the check valve, and (54) is the 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 the upper water level detector installed, (60) is the lower water level detector, and (61) is the electromagnetic valve (57) which is energized or de-energized by the signal from the upper water level detector (59).
), and (62) is a relay that controls opening and closing of the electromagnetic valve (58), which is energized or de-energized by the signal from the lower water level detector (60). (63) is a relay that controls the opening and closing of the solenoid valve (58) ) and the temperature riser (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 above-mentioned double hot water system, at night, the hot water in the hot water storage tank (51) is maintained at a full state by the operation of the upper water level detector (59>, relay (61>), and solenoid valve (57). are lower water level detector (60), relay (62)
A relatively small amount of hot water is stored in the hot water storage tank (51) by the operation of the solenoid valve (58).

When the circulation pump (52) is started in this storage state,
The hot water is circulated from the hot water storage tank (51) through the circulation pump (52), the check valve (53), the temperature riser (54), and back to the hot water storage tank (51) again through the heat retention circuit, and then the temperature riser ( 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.
) in operation. In addition, if the circulation of hot water stops for some reason, the flow switch (63) detects this and turns on 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, 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.

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 of the detector and generation of abnormal noise due to flowing water pressure. It is.

[Means for Solving the Problems] A running water detection device according to the present invention includes a main body that is disposed above the inlet of a tank that stores running water and has a guide section that extends up and down, and a switch that is attached to the main body. a member, a float which is rotatably and vertically movably supported by the guide part and has a specific gravity greater than 1 which floats under the pressure of the flowing water from the inlet and generates a flowing water detection signal from the switch member; It must consist of a wing part that receives the pressure of the flowing water from the inlet ('j) and rotates the flow 1~ around the axis of the guide part.

[Function] In the present invention, since the main body and flows 1 to 1 are installed in the tank, the piping connection configuration is simplified and a storage space for the flowing water detector in the piping space is not required. Product shape becomes smaller. Moreover,
Since the wing part rotates the float under the pressure of the flowing water from the inlet, the imaging of flow l~ during floating is suppressed,
Abnormal sounds in flows 1~ and chattering in the switch section (A) are prevented.

[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, FIG. 2 is a bottom view showing the shape of the float of the running water detection device of FIG. 1, and FIG. 3 is a running water detection device of FIG. FIG. 2 is a configuration explanatory diagram of a hot water hot air heater equipped with a detection device.

In Fig. 3, (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 (
6) is heated by a heater equipped with a built-in heat exchanger (8) for heating hot water. (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 a water supply pipe (1) connected to the hot water heating heat exchanger (8).
A distern tank (16) is connected to the distern tank (17) and stores hot water (one) through the distern tank (17).
The water level sensor (20) attached to the is a water flow detector that detects the flow of warm water (19) from the inlet (21) of the distillation tank (17). Note that (29) is a temperature sensor disposed on the pre-distribution 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 (2B). (
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).

By the way, (31) is an outlet connection part that is connected to a hot water flow 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 transition pipe of the floor heating device, and is connected to the hot water heating heat exchanger (8) via the return pipe (35) and the reflux 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 placed above. (140) is the main body (37
) a guide tube protruding toward the inlet (21) on the lower surface, (42) an upper stop 1 formed at the connection between the guide tube (40) and the main body (37>), (43 ) is the guide cylinder (
40) a lower stopper attached to the lower end; (41) a reed switch for generating a flowing water detection signal built into the guide tube (40); (47) a lead wire extending from the reed switch (41); 48) is a cap that locks the lead wire (47>) to the upper part of the main body (37).

(44) is the lower stopper (43) and the upper stopper (
42) is rotatably and vertically movably inserted into and supported by the guide tube (40), and is formed into a cylindrical shape from a material with a specific gravity greater than 1, and has a An annular shape that generates a flowing water detection signal from the reed switch (41) when the float (44) floats toward the upper bath 1 to the collar (42>) due to the pressure of the hot flowing water (19) from the inlet (21). A magnet (45) is provided.

In FIGS. 1 and 2, (46) represents the flow 1 to
(44) is a plurality of wing parts protruding in one direction on the outer circumferential surface of the float (44). It is formed in an inclined shape so that it rotates around its axis.

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

In Fig. 3, when the combustion tube (6) of the combustor (5) receives fuel supply from the fuel pump (3) and air supply from the combustion air blower +a (12), the combustion tube (6) of the combustor (5) is operated for combustion. The water in the heat exchanger (8) for hot water heating is heated, and the heated hot water is sent from the inlet (21) through the water supply pipe (18) to the distillation tank by the operation of the circulation pump (22). (17).

The water level of the hot flowing water (19) in the stern tank (17) is always kept constant by the water level sensor (16), and the hot flowing water (19) corresponding to the supply stream flows 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) to the heat radiating heat exchanger (25), which heats the surrounding air via the radiating fins (27), and the heated air is discharged into the room by the rotation of the convection fan (2B). , 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) 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, heating in the dormitory and floor heating can be efficiently performed using a single heat source.

By the way, the hot water (1
9) is detected by a water flow detector (20) installed in the di-stern tank (17).In other words, as shown in Figure 1, the flow from the inlet (21) to the di-stern tank (17)
When warm water (19) flows into the interior, the warm water (19)
A part of the float (44) hits the lower surface of the float (44), and the pressure of the flowing water causes the float (44) to float along the guide tube (40).

Then, the magnet (45) of the float (44)
The reed switch (41) in the combustor (5) turns on and generates a flowing water detection signal, and in response to this flowing water detection signal, the combustor (5)
The combustion cylinder (6) is operated, and the above-mentioned heating operation is continued.

In this case, a plurality of wing parts (4
6), the float (44) moves into the guide cylinder (
40). Therefore, the vibration of the float (44) during floating is suppressed, and the chattering of the reed switch (41) and the float (44) are suppressed.
) and the contact sound between the guide tube (40) and the float (44)
It is possible to prevent the occurrence of a collision sound between the upper part 1 and the upper part 1 hem (42).

On the other hand, the circulation pump (22) may stop abnormally due to a malfunction, etc.
Alternatively, if the flow of the warm water (1) is blocked in the middle of the piping for some reason and the pressure of the warm water (19) at the inlet (21) of the stern tank (17) decreases, the specific gravity may drop to 1. The larger flows 1 to (44) sink onto the lower stopper (43) due to their 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) or the like.

In this way, the running water detection device of this embodiment can detect warm running water (19
) to the inlet (21) of the gas tank (17) that stores
) has a guide tube (40〉) extending vertically above the main body (
37), a reed switch (41) as a switch member attached to the guide tube (40) of the main body (37),
It is rotatably and vertically movably supported by the guide tube (40), floats under the pressure of the hot water (19) from the inlet (21), and has a specific gravity greater than 1 to generate a water flow detection signal from the reed switch (41). float (44) and its flow h (4
4) and hot flowing water (19) from the inlet (21).
and a wing section (46) that rotates the float (44) around the axis of the guide tube (40) under pressure.

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 help make the product size of water hot air heaters smaller. Moreover, the flow 1-(
44) is rotated to suppress the vibration of the float during levitation, so chattering of the reed switch (41>) and abnormal sounds of flows 1 to (44) can be prevented.

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 thereto, and various switches such as a limit switch or a proximity switch can be used that have a function of generating a water flow detection signal when the float (44) floats.

[Effects of the Invention] As described above, the flowing water detection device of the present invention includes a main body having a guide portion extending vertically above the inlet of a tank that stores flowing water, a switch member attached to the main body, and a guide portion. Flow 1~ is supported rotatably and vertically by the float and has a specific gravity greater than 1, which floats under the pressure of the flowing water from the inlet and generates a flowing water detection signal from the switch member, and a The float rotates around the axis of the guide section in response to the pressure of the flowing water, so the flowing water detector can be installed inside the tank and the piping connection configuration can be simplified. This eliminates the need for a storage space for the flowing water detector in the piping space, contributing to the miniaturization of the product. Moreover, since the float is rotated by the action of the wings, it is possible to suppress the photographing of the float during floating, thereby preventing abnormal noises caused by the float and chattering of the switch member.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of a running water detection device according to an embodiment of the present invention, FIG. 2 is a bottom view showing the shape of the float of the running water detection device of FIG. 1, and FIG. 3 is a running water detection device of FIG. FIG. 4 is an explanatory diagram of the configuration of a hot water hot air heating hall equipped with a detection device. FIG. 4 is a piping diagram of a hot water device equipped with a conventional flowing water detection device. In the figure, 17: Cistern tank 19: Hot flowing water 20: Flowing water detector 21: Flow rate 37: Main body 40: Guide tube 41: Reed switch 44: Float 46: Wing section. In the drawings, the same reference numerals and the same symbols indicate the same or equivalent parts. Agent Patent attorney Daikichi Masuketsu and two others 17: Cistern tank 21: Inlet 37: Main body

Claims (1)

[Claims] (1) A main body that is located in a tank that stores flowing water, is disposed above the inlet of the tank, and has a guide section that extends vertically, and a switch that is integrally fixed to the main body and generates a flowing water detection signal. a float, which is rotatably and vertically movably supported by the guide section and has a specific gravity greater than 1 and floats under the pressure of flowing water from the inlet to generate a flowing water detection signal from the switch member; A flowing water detection device comprising: a wing portion that rotates a float around an axis of a guide portion in response to pressure of flowing water from an inlet.