JPS6113804B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a bath system that uses a heating device, particularly a pump, to circulate and heat hot water in a bathtub.
The purpose of this system is to prevent hot water from directly hitting the human body by changing the flow pattern of the jet stream into the bathtub depending on the temperature of the water being blown out. More specifically, when the heating device heats the hot water in the bathtub, the temperature of the hot water jetted into the bathtub becomes higher than the temperature of the hot water in the bathtub by the heating amount. Particularly from the perspective of energy conservation, it is better to keep the amount of water circulating between the heating device and the bathtub to the minimum necessary, which will reduce the energy consumed by pumps and the like for circulation. In this case, the difference between the temperature of water when sucked from the bathtub and the temperature after heating increases as the amount of circulating water decreases if the amount of heat to be heated is constant. That is, the temperature of the water jetted into the bathtub is considerably higher than that of the water in the bathtub. When such high-temperature water comes into contact with the human body, comfort is compromised and, in extreme cases, it can cause burns.

On the other hand, when the water in the bathtub is circulated without being heated, the temperature of the ejected water is equal to the temperature of the water that the human body is bathing in, so even if it hits the human body, it will not be unpleasant and will not cause any discomfort. In other words, the feeling of flowing water may be more comfortable for the human body if it hits the human body.

As mentioned above, unless there is a change in the water flow from the blowing device between when the heating device is heating and when only circulation is being performed, an inconvenience to the human body will occur. Therefore, the present invention solves the above problem by providing a means to differentiate the jet flow pattern between heating and circulation. Additionally, in addition to the means for causing the jet to hit or not hit the human body, by changing the flow pattern, problems that arise when only the direction of the flow is changed can be solved. Simply changing the direction of flow creates problems with agitation of the water in the bathtub. That is, if the blowing direction is simply directed downward to avoid contact with the human body, the upper surface of the water in the bathtub may be agitated, that is, the influence of the water flow may not reach the bathtub. This is because the distance from the jet to the water surface increases. This type of problem is also solved by the present invention.

The present invention will be explained below based on drawings showing embodiments. In FIG. 1, reference numeral 1 denotes a heating device, and the bathtub 2 and the heating device 1 are connected to each other so that water in the bathtub is circulated through an outgoing pipe 3 and a return pipe 4. The inside of the heating device 1 is
As shown in the figure. A suction pipe 5 connected to the return pipe 4 is connected to the suction side of the pump 6, and a temperature switch 7 is arranged in the middle of the suction pipe 5 so as to be able to detect the temperature of the water in the suction pipe 5. Temperature switch 7
may have an electrical circuit or operate mechanically. A discharge pipe 8 is connected to the discharge side of the pump 6, and a branch pipe 9 connects one side to a temperature control solenoid valve 10 and the other side to a bypass pipe 11.
water is allowed to flow. Temperature control solenoid valve 1
0 is connected to a flow switch 12 and a heat exchanger 13 via a tube 14. The flow switch 12 also causes a switch operation when water flows inside. A bypass valve 15 is connected to the bypass pipe 11 , and the flow that has passed through the bypass valve 15 passes through the bypass pipe 16 , joins the flow in the pipe 17 connected to the heat exchanger 13 at a confluence pipe 18 , and flows into the outgoing pipe 3 . combined. A burner 19 arranged to further heat the heat exchanger 13
is provided adjacent to the heat exchanger 13, and a burner 19 is attached via a gas electromagnetic valve 21 that opens and closes gas from the gas supply pipe 20.

Bypass valve 15 is shown in FIG. Bypass pipe 1
1 has an inlet 22 coupled to the inlet 2
A valve body 23 that opens and closes the valve body 2 is held in a slidable state by a support rod 24. The support rod 24 is the valve cover 2
5, and by fixing the valve cover 25 to the main body case 26, the valve body 23 is held in a state where the valve can be opened and closed relative to the inlet 22. Further, the main body case 26 has a chamber 27 that allows the valve body 23 to move, and the chamber 27 has an outlet 28 opening therein. Furthermore, the valve body 23 has a spring 29 and is configured to press the valve body 23 against the inlet 22 side. Outlet 28 is coupled to tube 16 .

Figure 4 shows the electrical circuit. Pump 6 by power supply
is activated, and when the temperature switch 7 is turned on, the temperature control solenoid valve 10 is opened. Flow switch 12 is ON
Then, the gas solenoid valve 21 opens.

The operation of the heating device 1 with the above configuration will be explained. Fill bathtub 2 with water up to water level A. When the pump 6 is operated in this state, the water in the bathtub 2 is sucked in through the suction pipe 5, pressurized, and the pressurized water is discharged into the discharge pipe 8.
Now, when the temperature of the water in the bathtub 2 is low, the temperature switch 7 is turned on, the temperature control solenoid valve 10 is opened, and the water flows through the flow switch 12. Then, the flow switch 12 is turned on, the gas solenoid valve 21 is opened, and the burner 19 is operated. The water in the heat exchanger 13 is heated by the burner 19, becomes hot water, and flows into the bathtub 2 through the outgoing pipe 3. At this time, the bypass valve 15 is opened to the inlet 2 by the force of the spring 29.
2 is closed, and no water flow is generated in the bypass pipes 11 and 16. This is because the valve body 23 is designed to not open due to the differential pressure between the branch pipe 9 and the merging pipe 18 due to the load setting of the spring 29. That is, a force acts in the direction of opening the valve body 23 due to the pressure difference between the inlet 22 and the chamber 27, but an even stronger force causes the spring 29 to force the valve body 23 toward the inlet 2.
This means that you are pushing it to the 2nd side. Therefore, all the water in the bathtub 2 from the return pipe 4 passes through the heat exchanger 13, is heated, and is returned to the bathtub 2 from the outgoing pipe 3 as hot water. As time passes through the above operations, the water in the bathtub 2 gradually becomes warmer, and the temperature of the water in the return pipe 4 also rises. Then, the water temperature in the suction pipe 5 rises to the operating temperature of the temperature switch 7, and the temperature switch 7 is turned off. Then, temperature control solenoid valve 1
0 is closed and the water in pump 6 is no longer flow switch 1.
It stops flowing to 2. Then flow switch 12
OFF, the gas electromagnetic valve 21 is closed, and the heating of the burner 19 is stopped. At the same time, the differential pressure that had been applied to the bypass valve 15 up until now is reduced because the water in the pump 6 no longer flows to the heat exchanger 13 side, and the entire pressure of the pump 6 is applied to the inlet 22, causing the pressure in the chamber 27 to increase.
The differential pressure between and a increases greatly, and the valve body 23 is pushed open against the spring 29. Then, the water in the pump 6 flows through the bypass pipe 15 to the outgoing pipe 3, and the water in the bathtub 2 flows through the return pipe 4, the bypass pipe 11, the bypass valve 15, and the bypass pipe 16.
Through this, circulation is generated from the outgoing pipe 3 to the bathtub 2. Since the burner 19 is stopped at this time, a state in which no heating is performed is maintained. When the temperature of the water in the bathtub 2 falls, the temperature switch 7 is turned on according to the initial explanation and the heating operation is started. Thereafter, the water temperature in the bathtub is maintained at the set value by repeating the above-described operations.

In FIG. 6, the human body is assumed to be B. When the flow from the blowing device 30 is X, the bath water at the water surface A is well stirred on both the upper and lower surfaces. This is because the flow X travels in a straight line almost horizontally with respect to the depth of the water surface A, so that the jet effect is effectively transmitted throughout the bathing water. On the other hand, when the human body B enters, the flow X directly hits the human body. If the temperature of the flow X is high, it will give a thermal discomfort to the human body. That is, this is because the temperature increases only in the area where the flow X hits, and a temperature difference occurs. Now, suppose the flow is so that it does not hit human body B.
Suppose that a flow is blown out in the direction of X′. Then,
Only the bottom surface of the bathtub 2 is stirred, and the stirring on the top surface becomes worse. If the stirring is poor, a difference will occur in the temperature distribution inside the bathtub 2, and the bottom will be warm while the top will be cold, causing discomfort.

Figures 5a and 5b show the blowing device 30 of the present invention. The supply port 31 is connected to the outgoing pipe 3 and hot water is supplied from the heating device 1 . The device main body 32 and the supply port 31 are integrally molded, and a lid 33 is sealed and fixed to the device main body 32 with screws 34. A nozzle 36 and a control path 37 are opened in a temperature sensing chamber 35 communicating with the supply port 31 . The other side of the nozzle 36 has a vortex chamber 38 formed therein;
In the center of the vortex chamber 38 there is an outlet 39 in the lid 33 . The nozzle 36 is oriented in the radial direction of the vortex chamber 38 and the control channel 37 is open tangentially to the vortex chamber 38 . Inlet 40 of control path 37 of temperature sensing chamber 35
A control valve 41 made of bimetal is fixed to the main body 32 of the device with screws 42, and is configured to open and close the inlet 40 depending on the temperature of the bimetal. The output port 39 has an edge 43 on the side of the vortex chamber 38 and an enlarged wall 44 facing outward. The blowout device 30 having the above configuration is connected to the output port 39.
is attached so that it faces into the bathtub 2.

When the heating device 1 is not in the heating state, the supply port 3
Since the temperature of the incoming water is not very high, the bimetallic control valve 41 closes the inlet 40. (This is because if the deformation temperature of the bimetal is set in advance, deformation will not occur until that temperature is reached.) The inlet 40 is closed and the control path 37
There is no flow. That is, the temperature sensing chamber 35
All of the flow flows into the nozzle 36. Then, since there is no flow in the circumferential direction in the vortex chamber 38, no vortex is generated and the fluid flows out from the output port 39. The flow at this time becomes flow X, which moves straight horizontally within the bathtub 2.
Next, when the heating device 1 enters the heating state, the temperature of the water entering the supply port 31 increases. Then the temperature sensing chamber 35
The temperature of the water inside increases, causing thermal deformation of the control valve 41. When the control valve 41 in FIG. 5b is deformed as shown by the dotted line, the temperature sensing chamber 35 and the control passage 37 are brought into communication by opening the inlet 40, and a flow is generated in the control passage 37. Then, the flow A of the nozzle 36 is pulled by the flow C and changes to flow B, and as a result, the vortex chamber 3
8, a vortex is created. When a vortex is generated in the vortex chamber 38, the flow from the output port 39 creates a conical flow Y along the enlarged wall 44 after the edge 43.
This flow Y rotates as it moves towards the bathtub 2 as shown in Figure 6.
Squirt inside. Therefore, the water does not hit the human body B, and since the water is blown out to both the water surface A side and the bottom side of the bathtub 2, the agitation is sufficient and a good bathing condition is ensured.

Here, the reason why the output port 39 is divided into an edge 43 and an enlarged wall 44 is that when a vortex is generated in the vortex chamber 38, a pressure difference is generated in the radial direction due to the vortex, which causes a pressure loss in the blowing device 1. this is,
This is based on the principle of a vortex fluid element. The pressure loss described above is unnecessary in the present blowing device. That is, the smaller the pressure loss, the less the load on the pump 6 in the heating device 1 will be. For this reason, the vortex flow in the vortex chamber 38 is immediately expanded from the edge 43, rotated widely along the expansion wall 44, and the vortex flow within the vortex chamber 38 is immediately released by that amount. This also allows a weak pressure loss between the nozzle 36 and the output port 39 due to the principle of the eddy current fluid element. In addition, from another point of view, as the strength of the vortex flow in the vortex chamber 38 increases, the pressure loss increases. In order to avoid this, even the vortex flow in the small vortex chamber 38 is designed to sufficiently achieve the desired effect. That is, even if the vortex is weak, if the vortex flows through the enlarged wall 44 while swirling, the edge 43 becomes important. If the edge 43 is shaped like a straight pipe instead of an edge, the vortex does not spread and becomes close to the flow X, which is a straight flow. This is because the flow is directed in the straight pipe section, reducing the force that spreads throughout. From the above explanation, the edge 43 that does not have a straight pipe part that directs the vortex flow is effective, and the enlarged wall 44
In relation to this, even a weak eddy flow can create a flow Y with sufficient spread. Therefore, the object of the present invention can be fully achieved. Furthermore, since the purpose can be achieved even with a weak vortex flow, the pressure loss in the blowing device 30 is small, and the load applied to the pump 6 is also small.

By using the blowing device of the present invention,
The flow pattern changes automatically depending on the temperature of the blowing flow, so you can enjoy a comfortable bath without exposing your body to the high-temperature flow, and even when the flow does not hit your body, the swirling flow of the swirling flow allows you to enjoy a comfortable bath. This allows you to enjoy an effective bath without sacrificing the stirring effect in the bathtub.

Furthermore, since the desired purpose can be achieved even with a small pressure loss as a blowing device, a stable flow state can be created with less load being applied to the pump. This is achieved by utilizing the unique blowing device of the present invention.

[Brief explanation of the drawing]

Fig. 1 is a system diagram for implementing the present invention, Fig. 2 is a planar circuit diagram of an embodiment of a heating device, Fig. 3 is a sectional view of an embodiment of a bypass valve, Fig. 4 is an electric circuit diagram, and Fig. 5 is a diagram of an embodiment of a heating device.
Figure a is a sectional view of the blowing device of the present invention, Figure b is a plan view of the blowing device of the present invention, partially in cross section, and Figure 6 is a diagram of the jet flow pattern in the bathtub. DESCRIPTION OF SYMBOLS 1... Heating device, 2... Bathtub, 30... Blowing device, 31... Supply port, 36... Nozzle, 37
... Control path, 38 ... Vortex chamber, 39 ... Output port,
43...Edge, 44...Expanding wall.

Claims (1)

[Claims] 1. In a bath system in which water in a bathtub is heated and circulated by a heating device, a blowing device is provided for spouting hot water from the heating device into the bathtub, and the blowing device is connected to a supply port and a nozzle, a whirlpool chamber, and a whirlpool at the tip thereof. The vortex chamber has an output port at the center thereof, and a vortex control means is provided so that the flow in the vortex chamber becomes a vortex only when the hot water temperature at the supply port becomes higher than a set value, and the shape of the output port is A jet blowout device for a bathtub, characterized in that the whirlpool chamber side has an edge shape and is configured so that it rapidly expands according to the flow.