JPS5824761A - Supplementary heat source arrangement of hot water system utilizing solar heat - Google Patents

Abstract

PURPOSE:To enable to control the hot water supply temperature throughout the year by a method wherein, when the temperature of water supplied from a heat absorbing part is higher than the set value, the quantity of said supplying water is reduced and as well as a heat source is turned off and at the same time the mixing quantity of cold water is also controlled. CONSTITUTION:An instantaneous gas hot water supplied 2 as a supplementary heat source is so constituted that a water temperature sensor 6, a water pressure responding switch 7 and a water flow rate change-over valve 8 are provided in a hot water supply passage 5 and yet a mixing part 12, at which the water of a feed water passage 11 equipped with a water flow rate controlling valve 14 therein is added, and a first hot water temperature sensor 10 are provided in a hot water supply passage 9 and as well as a burner 16, which is the heat source of a heat exchanger 4, is controlled by means of a gas flow rate controller 17. When the temperature of the water supplied from the heat absorbing part is higher than the set temperature, the valve 8 is closed and the valve 14 is controlled under no burning of the burner 16 and as well as the water flow from the feed water passage 11 is adjusted in order to bring the temperature of the water drawn-off from a faucet 3 for hot water to the set value.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an auxiliary heat source device for a solar hot water system.

Conventionally, hot water supply using solar hot water systems (hereinafter referred to as solar systems) requires an auxiliary heat source equipment due to the lack of hot water in seasons other than summer.

An auxiliary heat source machine with hot water temperature control function was incorporated into the system. However, in the summer, the water temperature of the solar system becomes high, and in order to use showers at the appropriate temperature, it is necessary to
Stop the operation of the auxiliary heat source equipment.

Additionally, there was the inconvenience of having to manually operate the mixing faucet.

In view of the above points, an object of the present invention is to provide an auxiliary heat source device for a solar hot water system that can automatically obtain a desired hot water temperature even in summer.

That is, the present invention detects the temperature of the water supplied from the solar heat absorption part with a water temperature detection sensor, and when the detected temperature is lower than the set temperature, the heat source is controlled so that the supply temperature reaches the desired set temperature. .

Also, when the detected temperature is higher than the set temperature.

By closing the water area switching valve to reduce the ice supply from the heat absorption part and turning off the heat source, and by controlling the opening degree of the water flow control valve to reduce the amount of water mixed that does not go through the heat absorption part by $1. , the door is configured so that the water supply 111 temperature detected by the hot water temperature detection sensor becomes the desired set temperature.

An embodiment of the present invention will be described below based on the drawings. (1
) is the heat absorption part of the solar system, and the heat absorption part (1)
The water heated by the instant gas supply l serves as an auxiliary heat source.
The hot water is supplied to the hot water tap (3) via the hot water tank (2).

The gas supply from the heat absorption part (1) -! A water temperature sensor (6
), a water pressure responsive switch (7), and a edema switch 'JPζ8) are arranged in this order from the upstream side to the downstream side φ, and extend from the heat exchanger (4) to the hot water tap (a). In the hot water supply path (9),! ! 1 temperature sensor 1, a mixing w6 (6) connected to a water supply channel (b) for mixing water that does not go through the solar system into the hot water supply channel (9), and a 20th plow temperature sensor (2) are arranged in this order from the upstream side to the downstream side. An ice storage control valve (
(b) is provided, and the heat exchanger (4) uses a burner (to) to which gas is supplied via the gas amount control section (2) as a heat source.

The water temperature sensor (6), the water pressure responsive switch (7), the water area switching valve (8), the first hot water temperature sensor (to), the second hot water temperature sensor (to), the water plate control valve (b), and The gas eel control unit (to) is electrically connected to the electronic control unit (2), and the temperature of hot water from the hot water tap (3) is set via the electronic control unit (2). It is linked with the hot water temperature controller (2). Note that (2) is a water supply channel for supplying water to the heat absorption part (1).

The electronic control unit (b) detects the incoming water temperature from the heat absorption part (1) of the solar system (hereinafter referred to as incoming water temperature) using the water temperature sensor (60) and the set water temperature (to) of the hot water temperature controller (to). If the incoming water temperature is lower than the set temperature, the water pressure response switch (7) is turned on and the water flow selector valve (8) is simultaneously opened.

Close the water filtration control valve O◆ and start burning the burner. Also @1 (D@ temperature sensor detected by lI
! 1--Based on this, a part of the gas pressure is controlled, and the burner temperature is adjusted so that the temperature of the plow coming out of the hot water tap (8) reaches the set temperature. On the other hand, if the incoming water temperature is lower than the set temperature, the water pressure responsive switch 7)
Even if it turns on, the combustion at burner 9 is kept in a stopped state, and the edema switching valve (8) is closed. In addition, the opening degree of the water cliff control Yanai So is controlled based on the hot water temperature detected by the hot water temperature sensor So of #I2, and the water supply channel is adjusted so that the temperature of the hot water coming out of the hot water tap (3) reaches the set temperature. (b) From the hot water supply path (9) The water that is mixed with fleas! Section Il1.

In this way, not only can the burner raise the water temperature to the set temperature via the heat exchanger (4) when the incoming water temperature is lower than the set temperature, but also when the incoming water temperature is higher than the set temperature, The edema switching valve (8) throttles the hot water supply source from the heat absorption part (1), and the burner (to) is not burned.
IA valve (Kuchi Yanai) controls the edema that mixes into the hot water supply path (9) so that the temperature at which it exits from the tap (3) matches the set temperature, so the incoming water temperature is significantly higher than the set temperature. Even when the temperature is high, the water temperature can be made to match the set temperature without increasing the overall mJl, thus improving the usability of showers in the summer, etc.

Since the temperature of hot water can be controlled without wasting water or gas, it has a great effect on energy saving, which is the original purpose of solar stems.

In the above embodiment, two hot water temperature sensors (6)-
Although we have explained an example in which an auxiliary heat source is provided, C is because an instantaneous gas feeder #I (2) was used as an auxiliary heat source.

This is a result of considering the responsiveness, and it is not necessarily necessary to configure it in this way, and the first hot water temperature sensor 4 may be omitted and the 20th elevated temperature sensor 4 may be provided.

As explained above, according to the auxiliary heat source device for the solar hot water system according to the present invention, when the water temperature supplied from the solar heat absorption part is higher than the desired set temperature, the edema switching valve is closed to absorb heat. Along with reducing the supply from the department and turning off the heat source.

By controlling the opening degree of the water control valve to adjust the mixing amount of water that does not pass through the heat absorption part, the temperature of the feeding iron detected by the temperature detection sensor is kept below the desired set temperature. Therefore, if the water temperature supplied from the heat absorption part is significantly higher than the set temperature,
In addition, it is possible to automatically supply heat to a desired temperature G without increasing the overall am, thereby improving the usability of showers in the summer, and controlling the hot water temperature without wasting water or gas. This goes back to the original purpose of solar systems, which is energy saving (which is also extremely effective).

[Brief explanation of the drawing]

The drawing is an overall configuration diagram showing an embodiment of the present invention. (1) --- Endothermic part, (Ri--- Instantaneous gas feeder,
(4>...Heat exchanger 1' (5)--Hot water supply path*
(a-...Water temperature sensor, (8)...Fisheries switching valve, 1@
)--Hot water supply path, (B)...Second hot water temperature sensor, 04--Water flow control valve, m--Burner (
Heat m) (b)...Electronic control section, (to) -Hot water temperature controller fee-Hiroshi Morimoto

Claims (1)

[Claims] 1. A hot water supply path from a solar heat absorption part to a heat exchanger;
A supply circuit extending from the heat exchanger to the hot water supply point ζ and a heat source supplying heat to the heat exchanger are provided, and the hot water supply path is provided with:
A water temperature detection sensor and a water flow rate switching valve are disposed, and a water supply channel for supplying water that does not go through the heat absorption section through a water flow control valve is connected to the hot water supply channel, and a connection point of the water supply channel and the hot water supply channel are connected to the water supply channel. A hot water temperature sensor is installed between the water temperature and the water temperature. When the temperature detected by the water temperature detection sensor is lower than the set temperature, the water volume switching valve is opened and the water volume control valve is closed, and the water temperature detection sensor is set so that the temperature detected by the water temperature detection sensor matches the set temperature. When the heat radiation amount of the heat source is controlled and the temperature detected by the water temperature detection sensor is higher than the set temperature. The water volume control valve is configured to be closed, the heat source is turned off, and the opening degree of the water volume control valve is controlled so that the temperature detected by the hot water temperature detection sensor matches the set temperature. This is an auxiliary heat source for a solar hot water system.