JPH0315967Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Industrial application field) This invention is a one-can two-can
This invention relates to a circuit heater.

(Prior Art and Problems) Conventionally, as disclosed in Utility Model Application Publication No. 59-21440, there has been no known device that operates when a bath and hot water supply are used simultaneously to limit the amount of circulation on the bath side. There is. Furthermore, as disclosed in Japanese Patent Application Laid-open No. 55-72527, a one-can two-channel heater is known that senses the temperature of hot water in the circulation path and opens and closes the circulation waterway to the heat exchanger. ing.

However, in the above-mentioned conventional systems, if the bath heating and hot water heating are performed at the same time, the circulation amount on the bath side is limited to a certain amount, which reduces the bath heating ability and prevents the bath from boiling. It had the problem of delays. In addition, the latter type has a hot water supply priority system and cannot be used for both bathing and hot water supply at the same time.

Therefore, the purpose of this invention is to solve the above-mentioned conventional problems and provide a one-can two-circuit heater that does not cause an extreme drop in water temperature on the bath side even when used for hot water supply and bathing at the same time. It is something to do.

(Means for Solving the Problems) In order to solve the problems, the present invention provides a bath heating circuit equipped with a heat exchanger, a water servo valve and a pump that are driven by a motor to increase or decrease the flow of water channels; A one-can two-circuit heater comprising a temperature sensor attached to the outlet of the heat exchanger, a hot water supply circuit equipped with the heat exchanger, and a controller whose input is the temperature sensor and whose output is the water servo valve. That is.

(Function) In this invention, when taking a bath and supplying hot water at the same time, a load is applied to both the heat exchangers for the bath and the hot water supply, and the outlet temperature of the heat exchanger for the bath tends to decrease; The temperature sensor installed at the outlet of the bath heat exchanger detects the drop in temperature, and the controller drives the motor to reduce the water servo valve installed in the water channel, so the flow rate through the bath heat exchanger is reduced. As a result, an extreme drop in the hot water temperature at the outlet of the heat exchanger is prevented.

(Example) The one-can two-circuit heater of the present invention (hereinafter referred to as the heater of the present invention) will be described below according to the embodiment shown in the drawings.

FIG. 1 shows a heater according to the invention, which heater 1 has a bath heating circuit 2. FIG.

The bath heating circuit 2 is equipped with a heat exchanger 3, a water servo valve 6 and a pump 5 which are driven by a motor to adjust the increase or decrease of the water channel.

Further, the bath heating circuit 2 is equipped with a temperature sensor 7 at the outlet of the heat exchanger 3.

Next, a hot water supply circuit 8 is provided, and a heat exchanger 9 is attached to the hot water supply circuit 8 .

On the other hand, a controller 14 is provided, and the controller 14 has the temperature sensor 7 as an input and the water servo valve 6 as an output.

Further, the heat exchangers 3 and 9 are heated by the burner 13.

The operation of the one-can two-circuit heater of the present invention shown in the above embodiments will now be described.

That is, the pump 5 is driven and the burner 13 is ignited to heat the bath.

As a result, the hot water in the bathtub 15 circulates through the bath heating circuit 2 and is heated in the heat exchanger 3.

In this state, if hot water is to be supplied at the same time, the faucet 11 is opened to allow water to flow into the hot water supply circuit 8.

As a result, the load of both heat exchangers 3 and 9 is applied to the burner 13, and the outlet temperature of the heat exchanger 3 tends to decrease.

However, the temperature is detected by the temperature sensor 7 and the controller 14 throttles the water servo valve 6.

This reduces the flow rate through the heat exchanger 3 and prevents the outlet temperature of the heat exchanger 3 from decreasing.

(Effects of the invention) The embodiments of the one-can two-circuit heater of the invention are as described above, and the effects thereof are listed below.

(1) The heater of the present invention has the configuration described in the claims for utility model registration, and in particular detects the temperature at the outlet of the heat exchanger of the bath heating circuit and adjusts the opening of the water servo valve. Even if they are used at the same time, the temperature of the hot water to the bath will not drop.

(2) The heater of the present invention has the same configuration as above, and since adjustments are made especially in the bath heating circuit, the configuration of the hot water supply circuit can be left as is.

[Brief explanation of the drawing]

FIG. 1 is an overall view showing an embodiment of the present invention. 1... Heater, 2... Bath heating circuit, 3... Heat exchanger, 5... Pump, 6... Water servo valve, 7...
... Temperature sensor, 8 ... Hot water supply circuit, 9 ... Heat exchanger, 10 ... Water supply source, 11 ... Faucet, 13 ... Burner, 14 ... Controller, 15 ... Bathtub.

Claims (1)

[Scope of utility model registration request] A bath heating circuit equipped with a heat exchanger, a water servo valve and a pump driven by a motor to increase or decrease the flow of water, a temperature sensor attached to the outlet of the heat exchanger, and a heat exchanger. A one-can two-circuit heater comprising a hot water supply circuit and a controller that uses the temperature sensor as an input and the water servo valve as an output.