JPS6196352A - hot water bath equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is a combination of an instantaneous water heater and a bath pot. This relates to a hot water supply bath device that increases the capacity by adding the capacity of a bath pot to the capacity of a water heater and pours hot water into a bathtub.

Conventional technology When pouring hot water into the bathtub, water at an appropriate temperature heated by an instantaneous water heater is directly poured into the bathtub from the circulation inlet/outlet pipe of the bathtub without adding to the capacity of the bathtub.

That is, as shown in FIG. 2, the hot water supply pipe 1 of the instantaneous water heater 2
A pouring pipe 14 is installed at one end of the bathtub 3 via a solenoid valve 13, and the pouring pipe 14 is opened into a funnel 24 at the end of a riser pipe 23 provided vertically at the circulation inlet pipe 15 of the bath pot 3. This is the configuration I contacted.

Problems to be Solved by the Invention In order to pour a large amount of water at a suitable temperature into the bathtub and shorten the pouring time, it is necessary to increase the capacity of the instantaneous water heater. It is.

The water temperature is 5°C, and the pouring temperature is 43°C. 〉1 in issue 17
A flow rate of 1.21/ML cannot be obtained.

If an attempt is made to obtain a flow rate of /i in 1517 with t-30% UP, the capacity will be No. 23. In other words, in the above example, it is necessary to increase the capacity of the instantaneous water heater to a size 6. As described above, as the instantaneous water heater becomes larger, the size of the device becomes larger, which goes against the need for space saving, and there are problems such as an increase in the cost of the device.

Means to solve the problem: A bathtub with a heat exchanger configuration including a riser pipe with a funnel at the tip and an instantaneous water heater are combined, and one of the hot water supply pipes of the instantaneous water heater is connected to a hot water outlet with a hot water tap. The other end is branched into a hot water pouring pipe having a solenoid valve, and the first hot water pipe is connected to the funnel through an opening, and the bath kettle heat exchanger is connected to the circulation inlet pipe, the water level part, and the rectangular shape. pipes, intermediate water cans, heat transfer tubes, and outlet water cans in this order, and a circulation outlet pipe is placed on the side wall of the outlet water can at a position higher than the heat exchanger tubes in the vertical direction, and a circulation outlet pipe is placed at a position higher than the heat exchanger tubes in the vertical direction on the side wall of the outlet water can. The other opening of the riser pipe is connected to a portion substantially below the center.

When pouring hot water at a suitable temperature into the bathtub, the hot water obtained from the instantaneous water heater is sent to the heat exchanger tube through the outlet water can of the bathtub heat exchanger, and is reheated by the heat exchanger tube. The water is at a suitable temperature, passes through the intermediate water can, rectangular pipe, and inlet water can, and then pours into the bathtub through the circulation inlet/outlet pipe.The capacity of the bath pot can be efficiently added to the capacity of the instantaneous water heater. Large-capacity pouring can be achieved.

Embodiment An embodiment of the present invention will be explained based on FIG. In the figures, the same parts as those in the conventional example shown in FIG. 2 are given the same numbers.

In FIG. 1, a hot water bath device 1 of the present invention combines an instantaneous water heater 2 and a bath pot 3. The instantaneous water heater 2 is composed of a drum part 5 having a drum pipe 4, a fin block 8 having a fin vibro and heat absorption fins 7, and a water supply pipe 9, a drum pipe 4, a fin vibro, and a hot water supply pipe 10 are connected to each other. There is. The distal end of the hot water supply pipe 10 is branched into a hot water tapping pipe 12 having a hot water tap 11 and a hot water pouring pipe 14 having a solenoid valve 13.

The bathtub 3 includes a circulation inlet pipe 16, an inlet water can part 16, a rectangular water can part 17, an intermediate water can part 18, and a heat transfer tube 26 having heat absorption fins 1-9. The outlet water can part 21 and the circulation outlet pipe 22 are arranged in this order.

One side of the riser pipe 2a is connected to the side wall of the outlet water can part 21,
The other end is vertically raised to a higher position than the instantaneous water heater 2 and the bathtub 3, and a funnel 24 is provided at the tip thereof, and a hot water pouring pipe 23 is connected to the funnel 24 through an opening.

At this time, the funnel 24 may be a vacuum breaker valve.

Furthermore, the hot water bath apparatus 1 is provided with an instantaneous water heater burner 25 and a bath pot burner 26, respectively, and the instantaneous water heater 2 and bath pot 3 are arranged side by side with a partition plate 27 in between.

Next, the operation and effect will be described separately when heating the bath alone, when heating the hot water supply alone, when using the hot water supply and the bath simultaneously, and when pouring water into the bathtub.

(1) When heating a bath alone When heating a bath with a predetermined amount of water in the bathtub, the solenoid valve 13 and hot water tap 11 are closed, so the instantaneous water heater burner 25 is not ignited and the bath is heated. Only the pot burner 26 will be ignited. After ignition, heat is absorbed by the endothermic fins 19 and the water in the heat transfer tube 20 is heated, and the water in the heat exchanger tube 20 is heated. Heat exchanger tube 2
0, natural convection towards the outlet water can part 21, circulation outlet pipe 22
It flows more towards the bathtub. As the heating time increases, the circulation flow rate increases as the temperature of the water in the bathtub increases, and eventually the temperature will rise to a predetermined temperature.

At this time, the flow circuit during natural convection is one circuit (series circuit), and the flow is smooth, so if the flow is complicated, stagnation occurs, which adversely affects thermal efficiency, such as the occurrence of kettle noise due to local boiling. None.

(2) When only hot water supply is used, the solenoid valve 13 is closed and the bathtub burner 26 is not ignited. When the tap 11 is opened, the instantaneous water heater burner 25 is ignited. After ignition, heat is absorbed by the heat absorbing fins 7 to heat the water in the fin vibro, and a desired hot water temperature corresponding to the flow rate of hot water is obtained from the hot water outlet 11 via the hot water supply pipe 10 and the hot water outlet pipe 12.

(3) When used simultaneously With the solenoid valve 13 closed, the instantaneous water heater burner 25 and the bathtub burner 26 are ignited. After igniting, it heats up in the same way as when using the bath alone or hot water supply alone.

(4) When pouring hot water into the bathtub If there is no hot water left in the bathtub and the hot water tap 11 is closed, open the solenoid valve 13, water will flow from the water supply pipe 9 and the instantaneous water heater burner 25 will be ignited. Ru. After ignition, heat is absorbed by the heat absorption fins 7, and the hot water is heated in the order of the solenoid valve 13 at one end of the hot water supply pipe 10, the hot water pouring pipe 14, the funnel 24, the rising snow 23, the outlet water can part 21, and the heat transfer pipe 20. is sent. At this time, since the bath pot burner 26 is lit at the same time as the electromagnetic valve 13 is opened, the intermediate water can section 18, the rectangular tube 17, and the inlet starch syrup section 16 are reheated by the heat transfer tube 2o. Appropriate temperature hot water is poured into the bathtub from the circulation inlet pipe 15 via.

If all of the hot water sent from the first riser pipe 23 does not pass through the heat transfer tube 20 when pouring hot water, the heating efficiency in the heat transfer tube 20 will deteriorate, and the temperature of the hot water in the bathtub when heating the bath alone As the heat transfer tube 20 rises, the vertically upper side of the heat transfer tube 20 becomes in a state of turbulent convection with air bubbles mixed in. If the hot water in the riser tube 23 is directly affected by this turbulence, the hot water level in the riser tube 23 will change. Depending on the expansion, water may overflow from the funnel 24 or steam may be generated.

Unless this point is devised, the problem will not be solved.In contrast, in the present invention, the outlet water can part 21' is provided on the downstream side of the heat transfer tube 20, and the outlet water can part 21 is provided with an upper part in the vertical direction. The circulation outlet pipe 22, the heat transfer pipe 20, and the riser pipe 23 are arranged in this order. As a result, all of the hot water from the instantaneous water heater 2 fed into the outlet water can part 21 can flow into the heat transfer tube 20, and furthermore, it is possible to make the hot water stand approximately below the center of the diameter of the heat transfer tube 20 in the vertical direction. Since the tip of the riser tube 23 is exposed, it is not affected by the turbulent flow in the vertical direction in the upper side of the heat exchanger tube 20. This makes the flow in the heat transfer tube 20 of the bath pot 2 smoother, improving heating efficiency, and also prevents water from overflowing from the funnel 24 after the temperature of the water in the bathtub rises to a certain extent when heating the bath alone. ,
It does not generate steam, can boil water to a predetermined temperature, and can achieve high-capacity pouring.

Effects of the invention (1) The constant temperature hot water obtained by the instantaneous water heater is sent into the heat transfer tube of the bathtub and is reheated while being poured into the bathtub, and the hot water pouring capacity can be increased. Thereby, a predetermined amount of hot water can be poured in a short period of time.

(2) A configuration in which the hot water pouring capacity is increased by combining the capacities of the instantaneous water heater and the bath pot, rather than increasing the hot water pouring capacity by combining the capacity of an instantaneous water heater with a larger capacity and a bath pot. and
Compared to the former, the device size is more compact and the device cost is also lower.

(3) Pour the hot water obtained from the instantaneous water heater into the outlet water can,
After that, the hot water is sent to the heat transfer tubes, and all of the hot water is sent to the heat transfer tubes by forced convection (as opposed to natural convection when heating the bath alone), and the intermediate water tank part and rectangular shape. Since the water flow circuit is one circuit (series circuit) in the order of pipe, inlet starch syrup section, and circulation inlet pipe, the heating efficiency in the bath kettle increases, making it more economical when pouring hot water. .

[Brief explanation of drawings]

FIG. 1 is a perspective view of one embodiment of the present invention, and FIG. 2 is a perspective view of a conventional example. 16... Inlet starch syrup section, 17... Rectangular pipe,
18... Intermediate water can part, 20... Heat exchanger tube, 21
...Outlet water can part, 22...Circulation outlet pipe. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 18: Water flow between p 20, I-Yuji-bishi-suga Figure 2 and b lO: Rise tube 23: Rising tube 13: Electric vein 24: Funnel 14: Field-4t ・ts: n-ring People'apt

Claims (1)

[Claims] A bathtub with a heat exchanger configuration equipped with a riser pipe with a funnel at the tip, and an instantaneous water heater combined, one of the hot water supply pipes of the instantaneous water heater is connected to the hot water outlet pipe, and the other is a hot water pouring pipe with a solenoid valve. The bathtub has a circulation inlet pipe, an inlet water can part, a rectangular pipe, an intermediate water can part, a heat transfer pipe,
A circulation outlet pipe is arranged in the order of the outlet water can part, and a circulation outlet pipe is vertically placed on one side wall of the outlet water can part at a position higher than the heat exchanger tube, and the circulation outlet pipe is installed at a position substantially below the center of the opening of the heat exchanger tube. A hot water bath device configured by connecting the other openings of the pipes.