JPH058422Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an automatic bath device with a water heater for home use.

[Conventional technology]

The automatic bath system with water heater is constructed as shown in FIG.

In FIG. 5, reference numeral 1 denotes an appliance main body, which houses a hot water supply heat exchanger 2 and a reheating heat exchanger 3. The bathtub 4 and the heat exchanger 3 for reheating, which are installed at a position away from the appliance main body 1, are connected via an outgoing pipe 5 and a return pipe 6 for circulating reheating, and the return pipe 6 A pump 7 and a solenoid valve 8 are disposed in the pump 7 and a solenoid valve 8, and a pipe line 11 from a hopper 10 having a solenoid valve 9 is connected between the pump 7 and the solenoid valve 8. When it is opened and the pump 7 is operated, a reheating circulation operation via the reheating heat exchanger 3 can be performed.

A water supply pipe 12 and a hot water supply pipe 13 are connected to the hot water supply heat exchanger 2, a flow rate sensor 14 is provided on the water supply pipe 12, and a branch pipe 15 for filling hot water is branched from the hot water supply pipe 13 to connect the hopper 10. A solenoid valve 16 is arranged at the outlet of the branch pipe 15, and the solenoid valve 1
6. When 9 and 8 are opened and the pump 7 is driven, hot water heated by the hot water supply heat exchanger 2 is supplied into the bathtub via the hopper 10 and the circulation outgoing pipe 5 and the returning pipe 6. When the flow rate sensor 14 detects that the amount of hot water filled into the bathtub has reached a set value, the electromagnetic valve 16 is closed to automatically stop the hot water filling.

Although not shown in the figure, this type of automatic bath equipment is equipped with a microcomputer control section and a controller, and the microcomputer control section includes a flow rate sensor 14, a pressure sensor (not shown), and a water flow switch (not shown). (omitted), temperature detector (omitted), etc., and based on these signals and instructions to the controller, opens and closes various solenoid valves, drives the pump, and controls the burner (not shown). However, since these techniques are well known, detailed explanation thereof will be omitted.

[The problem that the idea aims to solve]

In the above-mentioned automatic bath equipment, when the flow rate sensor 14 detects the pouring of hot water at the set flow rate, the solenoid valve 16 is closed and the filling of hot water is automatically stopped. Because it closes rapidly,
There is a problem in that a water hammer effect occurs when water flow is cut off, resulting in large noise. In order to improve this problem, it is conceivable to use an electric valve instead of the solenoid valve 16 so as to gradually close the valve, but there is a problem in that this increases the cost.

The present invention aims to improve the problems of the prior art as described above and to provide an automatic bath device with a water heater that can prevent the water hammer effect when the bathtub is automatically stopped from being filled with hot water.

[Means to solve the problem]

In order to achieve the above-mentioned purpose, this invention
The hopper that relays the filling of hot water into the bathtub is equipped with a ball tap that has a water flow restricting function, and a flow rate sensor is installed in the branch pipe for filling hot water that supplies hot water to the hopper. The water level in the hopper is raised by closing a solenoid valve downstream of the hopper, and when the flow rate sensor detects that the flow rate supplied to the hopper has decreased due to the rise in the water level, the solenoid valve in front of the hopper is closed. It is characterized by

[Effect]

As mentioned above, the present invention closes the solenoid valve downstream of the hopper when the amount of water filled approaches the set value, so the water level in the hopper rises, and as the water level rises, the ball tap throttles the amount of water supplied, and the throttle causes the flow rate. When it is detected that the amount has decreased below a certain level, the solenoid valve is closed, so water hammer can be prevented. Moreover, the automatic bath equipment to which the present invention is applied,
Since it is originally a microcomputer-controlled system, it is sufficient to equip the control board with the above-mentioned functions, so it can be implemented easily and at low cost.

〔Example〕

An example of the implementation of the present invention will be described below with reference to FIGS. 1 to 4.

FIG. 1 shows the configuration of an instrument to which the present invention is applied, and since its basic configuration is the same as that in FIG. 4, the same parts are given the same reference numerals and detailed explanation will be omitted. In FIG. 1, reference numeral 18 denotes a flow rate sensor disposed in the branch pipe 15 for filling hot water leading to the hopper 10.
It was also used to correct the amount of hot water filled in the bathtub when it was opened. Reference numeral 19 is a ball tap provided in the hopper 10 and having a water flow restricting function, the details of which are shown in FIGS. 2 and 3. That is, in this ball tap, the base of the arm 19a is pivotally supported by a pin 19b, a float 19c is attached to the tip, and when the water level in the hopper 10 is low, a valve 19d is opened as shown in FIG.
The valve 19d is opened wide to supply water into the hopper, but when the float 19c rises due to the rise in the water level in the hopper, the valve 19d is gradually closed as shown in FIG.

In the present invention, the ball tap 19 and the flow rate sensor 18 having the above-mentioned water flow restricting function are used, and when the flow rate sensor 14 detects that the amount of hot water approaching the set value, as shown in FIG. Then, the electromagnetic valve 9 is closed and the pump 7 is stopped, and in this state, the flow rate sensor 18 detects the flow rate supplied into the hopper, and the valve 19d of the ball tap 19 moves in the closing direction to set the set amount of flow rate. For example, the electromagnetic valve 16 is configured to close when it is detected that the speed is below 2.5/min. Such control is of course performed by the microcomputer control section.

[Effect of idea]

As described above, according to the present invention, when the end of automatic hot water filling approaches, the solenoid valve on the outlet side of the hopper is closed to raise the water level in the hopper, thereby reducing the amount of water supplied to the hopper. Since the solenoid valve is closed after, water hammer can be prevented, and
This has the effect of not increasing costs.

[Brief explanation of the drawing]

Figure 1 is a water system diagram of an automatic bath system with water heater to which the present invention is applied, Figures 2 and 3 are explanatory diagrams showing details of the hopper, and Figure 4 is a flowchart showing the main parts of the present invention. be. FIG. 5 is a water system diagram of a conventional automatic bath system with a water heater. 1... Appliance body, 2... Heat exchanger for hot water supply, 3...
...heat exchanger for reheating, 4...bathtub, 5...circulation reheating forward pipe, 6...return pipe, 7...pump, 8,9,
16...Solenoid valve, 10...Hopper, 12...Water supply pipe, 13...Hot water supply pipe, 14, 18...Flow rate sensor, 15...Branch pipe for filling hot water, 19...Ball tap having water flow restricting function.

Claims (1)

[Scope of utility model registration request] The appliance body is equipped with a hot water supply heat exchanger and a reheating heat exchanger, and hot water heated by the hot water supply heat exchanger is filled into the bathtub via a hopper and a circulation reheating pipe, In an automatic bath device with a water heater that automatically stops filling hot water when the amount of hot water reaches a set value, the hopper is equipped with a ball tap that has a function of squeezing the amount of water, and A flow rate sensor is installed in the branch pipe, and when the amount of hot water filled approaches a set value, a solenoid valve downstream of the hopper is closed to raise the water level in the hopper, and as the water level rises, the flow rate supplied to the hopper decreases. An automatic bath device with a water heater, characterized in that the solenoid valve in front of the hopper is closed when the flow rate sensor detects this.