JPS60235941A - Bathtub device - Google Patents

Abstract

PURPOSE:To enable to raise and lower the temperature of bathtub water under the condition that the amount of the bathtub water is constant by a structure wherein a cooler is provided in parallel to a heater in the circulating circuit of the bathtub water and a temperature control valve is provided at the diverging point or junction of a heater line and a cooler line. CONSTITUTION:A heater 2 to heat the water in a bathtub 1 and a cooler to cool it are provided in parallel in the circulating passeage, in which a circulating pump 3 is arranged, of the bathtub water. In addition, a temperature control valve 8 is provided at the diverging point or junction of a heater line and a cooler line. Concretely, the respective required openings of control valves, which are respectively connected to the pipes 5a and 5b of the temperature control valve 8, are instructed by a separately arranged controller so as to mix the heating water passing through the heater 2 with the cooling water passing through the cooler 7 in order to circulate in a form of hot water. Thus, the temperature of bathtub water can be raised and lowered and, in addition, the programming of the temperature change can be possible, resulting in ensuring the comfortability of bathing and facilitating the high development of the bathing.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention uses a heating/cooling device in a domestic bathtub to adjust the temperature of bathtub water.

Conventional structure and its problems Conventionally, as shown in Fig. 1, a circulation pump 3 is driven for a bathtub 1, and hot water heated by a heater 2 is returned to the bathtub 1 to bring the bathtub water to a boil. Although it has a heating function to cool the bathtub and keep it warm, cooling is done by increasing the cold water from the tap 6 to lower the temperature of the bath water, which results in the use of unnecessary water for bathing, and also when reheating, this unnecessary water is used. This also resulted in energy loss due to heating the amount of water.

Purpose of the Invention The present invention addresses the above-mentioned problems of the conventional method, and aims to raise or just keep the temperature of the bathtub at a constant water volume by providing a cooler in parallel with the heater in the circulation circuit. It is something.

Structure of the Invention The present invention has a configuration in which a heater and a cooler are provided in parallel in a circulation path in which bath water is forcibly circulated by a circulation pump, and a control temperature control valve is provided at either a branching part or a merging part. .

DESCRIPTION OF EMBODIMENTS Examples of the present invention will be described below. FIG. 2 is a system configuration diagram of one embodiment, in which the outlet 1a of the bathtub 1 and the circulation pump 3 are connected by a pipe 4, and the heater 2 and cooler 7 are branched by pipes 4b, 4c, 5a, and 5b. The point 6a and the confluence point 6a are connected in parallel, the branch point 6a and the circulation pump 3 are connected through a pipe 4a, and the confluence point 6b is connected with a control temperature control valve 8.
After that, the pipe 5 is connected to the inlet 1b of the bathtub 1-. With the above configuration, when the bathtub 1 is filled with water or warm water and the circulation pump 3 is driven, the pipe 5 or the temperature sensor (not shown) provided in the bathtub reaches a predetermined temperature specified in advance by a remote control or the like. As much as possible, the control valve 11 connected to the pipes 5a and 5b of the control temperature control valve 8 is instructed by a separate controller to set the necessary opening degrees so that the heated water passes through the heater 2 and the water passes through the cooler 7. The hot water is circulated by mixing it with the cooling water. When the difference between the temperature setting and the bath water temperature is large, the control temperature control valve 8 controls water flow to only either the heater 2 or the cooler 7, and when the temperature difference becomes small, the control valve 8 controls the flow of water to each ff to balance both. Adjust the opening. The temperature control valve 8 has ports 9a and 9b connected to the heater 2 and the cooler 7 in the case 9, and a confluence port connected to the pipe 5, as shown in FIG. It has a section 9C. A control valve 11 that opens and closes the valve seat 10 is fixed to the shaft 13 of a step motor 12, and the valve opening degree is adjusted by moving the valve 11 up and down in the figure [the flow rate of water flowing in from 19a and 9b is controlled respectively] be done.

Next, the heater 2 and the cooler 7 have a temperature control range of about 5 degrees Celsius above and below 40 degrees Celsius for normal household use, so the heater 2 is set to 40 degrees Celsius or higher, and the cooler 7 is 40
During each temperature adjustment, the temperature is set at about 5 to 10 degrees Celsius or below, and the temperature of the heater 2 is usually adjusted to 45 degrees Celsius, and the temperature of the cooler 7 is adjusted to about 35 degrees Celsius. When a rapid temperature change is desired depending on usage conditions, the heater 2 is set to the maximum temperature and the cooler 7 is set to the minimum temperature. Further, the heater 2 and the cooler 7 each include a heating source and a cooling source, such as an electric heater and a heat pump type cooler, for example.

Also, as the part surrounded by the dashed line in Fig. 2, the heater 2
, the cooler 7, the circulation pump 3, the control temperature control valve 8, and other pipes are integrated and housed in an exterior case, thereby shortening the construction period and streamlining productivity at the installation site. can also be considered.

Effect of the invention As described above, the present invention has the following effects.

(1) The temperature of the bathtub water can be raised as well as lowered, and temperature changes can be programmed, making it easy to ensure bathing comfort and to improve its sophistication.

+2) &liJ In adjusting the temperature of water, there is no change in the amount of water, there is no unnecessary use of water such as water increase, and unnecessary waste of energy in heating it can also be prevented.

[Brief explanation of the drawing]

FIG. 1 is a system diagram of a conventional example, FIG. 2 is a system diagram of an embodiment of the present invention, and FIG. 3 is a schematic sectional view of the control temperature control valve. 1... Bathtub, 2... Heater, 7...
...Cooler, 3...Circulation pump, 8...
・Control temperature control valve.

Claims (5)

[Claims] (1) A bathtub device in which a heater for heating bathwater and a cooler for cooling bathwater are provided in parallel in a bathtub water circulation path having a circulation pump, and a control temperature control valve is provided at a branching portion or a merging portion of the bathwater circulation path. (2) The bathtub device according to claim 1, which is provided with a temperature sensor that detects the temperature of the bathtub water, and which inputs this signal to a control temperature control valve. (3) The heater stores hot water of 40℃ or higher, and the cooler stores 40℃ or higher hot water.
The bathtub device according to claim 1, which stores cold water of 0° C. or lower. (4) The bathtub device according to claim 1, wherein the control temperature control valve includes an opening control valve that controls the amount of water flowing to the heater and the cooler. (5) The bathtub device according to claim 1, wherein a heater, a cooler, a temperature control valve, and a circulation pump are housed in a case.