JPH01305251A - Bath furnace - Google Patents

Abstract

PURPOSE:To perform an effective operation by closing an additional combustion passage opening/closing valve, and switching a three-way valve to a hot water dropping side at the time of the operation of an automatic hot water bath supply, and opening the opening/closing valve and switching the three-way valve to a circulation side at the time of the operation of an additional combustion. CONSTITUTION:A controller 61 closes an additional combustion passage opening/closing valve 37 of a bypass passage 34, switches a three-way valve 38 to a hot water dropping side, and supplies hot water in a heat exchanger 35 into a bathtub 20 by a circulation pump 31 through a hopper 51 without circulation at the time of the operation of an automatic hot water bath supply. Accordingly, a bath water level sensor 64 accurately detects a water level in the bathtub 20 without influence of circulation water. Then, it opens the opening/closing valve 37, switches the valve 38 to a circulation side, combines high temperature water from the exchanger 35 with the circulation water passing a circulation passage 32, and combines it to the bathtub 20 by its temperature buffer at the time of the operation of an additional combustion. It also switches the valve 38 to the circulation side, and passes it through an ejector 33 in a state that its pressure loss is small at the time of the operation of a bubble bath. Thus, the respective operations can be effectively and safely performed.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a bath kettle device capable of reheating operation, bubble bath operation, and automatic bath hot water supply operation.

<Prior Art> FIG. 6 shows a configuration diagram of a conventional device. 1 is a bathtub, 2 is a heat exchanger, 3 is a circulation pump, 4 is a hopper for bath water supply, 5
is a three-way valve. At the time of reheating operation, the three-way valve 5 is switched to the circulation side and the circulation pump 3 is driven, whereby the bathtub water is circulated to the heat exchanger 2 and heated. Further, during automatic bath water supply, the three-way valve 5 is switched to the hopper 4 side and the circulation pump 3 is driven.

Further, FIG. 7 shows a configuration diagram of another conventional device. The same members as those in FIG. 6 are designated by the same symbols. 6 is a bathtub water level sensor, 7 is a short-circuit pipe, 8 is a three-way valve, 9 is an ejector, Reference numeral 10 denotes an air introduction path connected to the negative pressure forming section of the ejector 9. During reheating operation, switch the three-way valve 8 to open the bathtub 1.
During bubble bath operation, the three-way valve 8 is switched to the short-circuit passage 7 side to short-circuit the bath water, and the valve of the air introduction passage 10 is opened to supply air. By suctioning bubbles from the negative pressure forming part of the ejector 9, bubbles are ejected into the bathtub 1.

<Problems to be Solved by the Invention> However, in the conventional device shown in FIG. Since it passes through the heat exchanger 2, there is a large pressure loss, so there is a drawback that vigorous foaming water cannot be spouted into the bathtub 1. On the other hand, in the conventional device shown in FIG. 7, short-circuit circulation of the bathtub water is possible, so pressure loss can be reduced, and the bubble bath function can be performed well. However, if a hopper 4 for bath water supply shown by a two-dot chain line is connected to such a device to add an automatic bath water supply function, it is necessary to drive the circulation pump 3 to supply hot water.
There is a drawback that the dynamic pressure acts on the water level sensor 6, making it impossible to accurately detect the water level of the bathtub water. Furthermore, in the conventional device shown in FIG. 7, when switching from bubble bath operation to reheating operation, the high temperature water that has been heated and accumulated in the heat exchanger 2 flows into the bathtub J without being diluted. There was a problem with direct inflow.

Therefore, the present invention solves the drawbacks of the prior art as described above, and reduces the pressure loss of circulating water during bubble bath operation, making it possible to forcefully spray a sufficient amount of bubbles into the bathtub.1. In addition, the water level in the bathtub can be accurately detected during bath hot water supply operation, and superheated water is prevented from directly flowing into the bathtub from the heat exchanger.In addition, it is compact and can perform reheating operation and bubble bath operation at the same time. The purpose is to provide bath kettle equipment.

Means for Solving the Problems The bathtub device of the present invention comprises: a circulation passageway that guides water from the bathtub to a circulation pump and circulates discharged water from the circulation pump to the bathtub via an ejector; and the circulation passageway. A three-way valve for switching passages disposed upstream of the circulation pump, a bypass passage sandwiching the three-way valve, a passage opening/closing valve for reheating provided in the middle of the bypass passage, and a heat exchanger. It has an exchanger, a drop passage for bath hot water supply connected to the remaining one of the three-way valves, and an air introduction passage connected to the negative pressure forming part of the ejector, and the passage for reheating during bath hot water supply operation. At the same time as closing the on-off valve, the three-way valve is switched to the hot water drop-in side to drive the circulation/pump while dropping hot water from the drop-in path into the circulation passage, and during reheating operation, the above-mentioned reheating passage opening/closing valve is opened and The three-way valve is switched to the circulation side to drive the circulation pump, and during bubble bath operation, the three-way valve is switched to the circulation side to drive the circulation pump and open the air introduction path.

Furthermore, the above configuration is characterized in that, when the reheating operation and the bubble bath operation are performed at the same time, both the reheating passage opening/closing valve and the air introduction passage are opened.

<Function> During bath hot water supply operation, the passage opening/closing valve for reheating in the bypass passage is closed, and the three-way valve for passage switching is switched to the hot water drop side, so even if the circulation pump is driven, bath water continues to circulate. There's nothing to do. Therefore, even if the Wi-ring communication passage water level sensor is placed, it is not affected by dynamic pressure and can accurately detect the bathtub water level. Therefore, hot water can be accurately supplied to the bathtub.

During reheating operation, the reheating passage opening/closing valve in the bypass passage is opened and the three-way valve is switched to the circulation passage, so some of the bath water passing through the circulation passage flows to the bypass passage and is removed by the heat exchanger. After being heated and rejoined by the circulation passage, it flows into the bathtub. Therefore, the high-temperature water heated by the heat exchanger is appropriately buffered in temperature, and the inconvenience of high-temperature water directly flowing into the bathtub does not occur.

Furthermore, during the bubble bath operation, the three-way valve is switched to the circulation side and the circulation pump is driven, so that the bath water can be circulated without going to the heat exchanger side. Therefore, there is little pressure loss, the water in the bathtub can be circulated vigorously, the air from the air introduction passage can be circulated vigorously, the air from the air introduction passage can be sucked in vigorously, and bubbles can be squirted into the bathtub.

Since it is a three-way valve, there is little pressure loss when passing through the three-way valve.

Further, when performing reheating operation in addition to bubble bath operation, reheating can be performed at the same time by opening the reheating passage opening/closing valve of the bypass passage.

<Example> FIG. 1 is an overall configuration diagram of an apparatus for implementing the present invention.

20 is a bathtub, and 30 is a case for a bathtub. Case 3
Components necessary for bath hot water supply operation, reheating operation, and bubble bath operation are stored and arranged inside the bath. Reference numeral 31 denotes a circulation pump provided in the circulation passage 32, and when the circulation pump 31 is driven, bath water is circulated through the circulation passage 32.

An ejector 33 is provided at the end of the return path of the circulation path 32,
Circulating water returns to the bathtub 2o through the ejector 33.

A three-way valve 38 is provided on the upstream side of the circulation pump 31 in the middle of the circulation passage 32, and a bypass passage 34 is branched and provided across the three-way valve 38. Bypass passage 34 passes through heat exchange coil 36 in heat exchanger 35,
The circulation passage 32 is again joined to the downstream side of the three-way valve 38 on the upstream side of the circulation pump 31 . The bypass passage 34 is provided with a passage opening/closing valve 37 for reheating.

The inside of the heat exchanger 35 is a hot water storage tank, and the water that enters the heat exchanger 35 is heated by a burner 39, and the hot water is discharged as necessary to supply hot water. The water passing through the heat exchange coil 36 is heated by hot water in the heat exchanger 35.

An air introduction path 40 is connected to the negative pressure forming portion 33a of the ejector 33, and a jet air valve 41 is provided in the air introduction path 40.

Reference numeral 50 denotes a dropping channel for supplying bath water, which is connected from the lower end of the dropping hopper 51 to the remaining one of the three-way valves 38. A bath hot water supply path 52 from the heat exchanger 35 faces the drop hopper 51, and the bath hot water supply path 5
2 is provided with an on-off valve 53 for bath water supply. 55 is a float switch, when the bath water is being supplied, the hopper 5
The circulation pump 31 is configured not to be driven when the water level of the pump 1 is below a certain level.

61 is a controller which receives commands from a remote control unit 62, and which also operates a bath temperature sensor 63 and a bath water level sensor 64.
By inputting information from the , float switch 55, and other sensors, a predetermined control operation command is output to the circulation pump 31, passage opening/closing valve 37, three-way valve 38, burner 39, jet air valve 41, opening/closing valve 53, etc. do. In addition to the main operation switch, the remote control unit 62 is provided with a temperature adjustment dial for the heat exchanger 35, an automatic bath hot water supply operation switch, a reheating operation switch, a bubble bath operation switch, an automatic operation switch, and the like.

During the bath automatic hot water supply operation, as shown in FIG. 2, the valves 37 and 41 shown filled in black are closed, and the three-way valve 38 is dropped to switch the passage to the passage 50 side. Then, the hot water supply on-off valve 53 is opened to supply hot water to the hopper 51, and when the water level of the hopper 51 reaches a certain level, the circulation pump 3
Drive 1. Hot water is introduced into the bathtub 20 from the hopper 51 via the drop path 50, the three-way valve 38, the circulation pump 31, and the ejector 33. In this case, since the bath water does not circulate toward the circulation passage 32 side, no dynamic pressure is applied to the bath water level sensor 64 due to the water flow, so that the water level can be accurately measured. Note that when the water level of the hopper 51 falls below a predetermined water level, the pump 31 is stopped to prevent dry running. When hot water is supplied to the set water level of the bathtub 20, the hot water supply operation is stopped.

During reheating operation, as shown in FIG. 3, the valves 41 and 53 shown filled in black are closed, and the three-way valve 38 is switched to the circulation path 32 side. Then, the reheating passage opening/closing valve 37 is opened and the circulation pump 31 is driven. The bathtub water is circulated through the circulation passage 32, and a portion of the water passing through the circulation passage 32 flows into the bypass passage 34 and is passed through the heat exchanger 35.
is heated through the heat exchange coil 36 of the
After joining with the circulating water passing through 2, it returns to the bathtub 20. Since the temperature of the hot water heated by the heat exchange coil 36 is always lowered by the water passing through the circulation passage 32, high-temperature water does not directly flow into the bathtub 20. When the bath temperature sensor 63 detects the set temperature, the reheating operation is stopped. In the case of automatic operation, the system shifts to keep-warm mode.

During bubble bath operation, as shown in FIG. 4, the valves 37 and 53 shown filled in black are closed, the three-way valve 38 is switched to the circulation passage 32 side, the jet air valve 41 is opened, and the circulation pump 31 is closed. to drive. The bathtub water returns to the bathtub 20 through the circulation passage 32 without passing through the bypass passage 34. Circulating water passing through the ejector 33 causes air to flow through the air introduction path 40 to the negative pressure forming part 3 of the ejector 33.
It is sucked in from the bathtub 3a and ejected into the bathtub 20 in the form of bubbles. Since the bath water does not go to the heat exchange coil 36 side and the three-way valve 38 itself allows water to flow through it better than an electromagnetic on-off valve, the pressure drop of the circulating water is small, and therefore the circulation through the ejector 33 is reduced. The water has a good force, and a strong stream of bubbles is ejected into the bathtub 20.

If it is desired to perform the bubble bath operation and the reheating operation at the same time, the valve 41 may be opened in the state shown in FIG. 3, and the valve 37 may be opened in the state shown in FIG. 4.

FIG. 5 shows the states of answer 37, 38, 41, 53 and the state of the circulation pump 31 during each operation of automatic bath hot water supply operation, reheating operation, and bubble bath operation. Although hot water was supplied using one heat exchanger 35, a configuration may be adopted in which two separate heat exchangers are used for bath reheating and bath automatic hot water supply.

Effects> The present invention has the above-described configuration, and during automatic bath water supply operation, the passage opening/closing valve for reheating is closed and the three-way valve is switched to the hot water drop-in side, so even if the circulation pump is driven, bath water does not flow. There is no circulation. Therefore, even if the bath water level sensor is placed in the circulation passage, hot water can be supplied by accurately detecting the water level without being affected by the water flow.

In addition, during reheating operation, the reheating passage opening/closing valve in the bypass passage is opened and the three-way valve is switched to the circulation side, so high-temperature water heated by the heat exchanger passes through the bypass passage and passes through the circulation path. It is combined with the circulating water passing through the bathtub, and is appropriately temperature buffered and circulated to the bathtub. Therefore, there is no problem that the high temperature water accumulated in the heat exchanger is directly introduced into the bathtub at the start of the reheating operation.

Furthermore, during the bubble bath operation, the three-way valve is switched to the circulation side, so the circulating water can pass through the ejector without going to the heat exchanger, that is, with little pressure loss. Furthermore, since the three-way valve itself has less pressure loss than an electromagnetic on-off valve, the air suction force by the ejector is strong, and a sufficient amount of bubbles can be ejected with sufficient force into the bathtub.

Further, in the present invention, by opening both the passage opening/closing valve for reheating and the air introduction passage, reheating operation and bubble bath operation can be performed at the same time.

In addition, according to the present invention, an automatic bath water supply mechanism, a reheating operation mechanism, and a bubble bath operation mechanism can be configured compactly and at low cost in one case.

[Brief explanation of the drawing]

Figure 1 is an overall configuration diagram of the device for implementing the present invention, Figure 2 is a configuration diagram showing the state during automatic bath water supply operation, Figure 3 is a configuration diagram showing the state during reheating operation, and Figure 4 is a foam FIG. 5 is a block diagram showing the state of the bath during operation, FIG. 5 is a diagram showing the state of the response valve and circulation pump during each operation, and FIGS. 6 and 7 are block diagrams of the conventional apparatus. 20: Bathtub 31: Circulation pump 32: Circulation passage 33: Ejector 34: Bypass passage
35: Heat exchanger 37: Reheating passage opening/closing valve 38: Three-way valve 40: Air introduction passage 41 Niji end air valve 50: Dropping passage 51: Hopper

Claims (2)

[Claims] (1) A circulation passage that guides water from the bathtub to a circulation pump and circulates water discharged from the circulation pump to the bathtub via an ejector, and a passage that is located upstream of the circulation pump in the circulation passage. A three-way valve for switching, a bypass passage sandwiching the three-way valve, a passage opening/closing valve for reheating provided in the middle of the bypass passage, and a heat exchanger, connected to the remaining one of the three-way valves. It has a drop passage for bath hot water supply and an air introduction passage connected to the negative pressure forming part of the ejector, and during bath water supply operation, the passage opening/closing valve for reheating is closed and the three-way valve is placed on the hot water drop side. to drive the circulation pump while dropping hot water from the drop-in path into the circulation path, and during reheating operation, open the reheating passage opening/closing valve and switch the three-way valve to the circulation side to drive the circulation pump. The bath kettle device is characterized in that, during bubble bath operation, the three-way valve is switched to the circulation side to drive the circulation pump and open the air introduction path. (2) The bathtub device according to claim 1, wherein when the reheating operation and the bubble bath operation are performed at the same time, both the reheating passage opening/closing valve and the air introduction passage are opened.