JPS60164150A - Heat pump type hot water supplier - Google Patents

Abstract

PURPOSE:To permit the effective operation of a heat pump type hot water supplier using effectively the solar radiant heat by a method in which a compressor is driven automatically at the daybreak and also stopped after the lapse of a given period of time at the nightfall by a controller. CONSTITUTION:A heat collector 3 set outdoors, a compressor 1 connected to the heat collector 3, a heat storage tank 5 connected to the compressor 1, and a controller A to automatically drive the compressor 1 at the daybreak and also to stop the compressor 1 after the lapse of a given period of time at the nightfall are provided. Since the hot water supplier can be continuously operated for a given period of time even after the nightfall, a necessary amount of hot water can be economically obtained even in the winter season or cold areas where the temperature of the open air is low. If the time to allow the continuous operation of the hot water supplier is set up optionally in such a way as to meet the atmospheric temperatures, necessary heating temperatures of water can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heat pump water heater (hereinafter abbreviated as H3).

Conventional configuration and its problems In general, an HS system consists of a compressor 1, as shown in FIG.
Heat collector service 2. Fruit heating device 3. A heat pump cycle consisting of an expansion valve 4 and a heat storage tank 5. Circulation pump 6, condenser 2
It consists of a water circuit consisting of. This system collects heat radiated from the sun and heat from the atmosphere, so the time required to raise the temperature of water in a tank of the same capacity differs depending on the season. Furthermore, the shorter the time required for this system to collect heat, the smaller the ratio of input to output, which increases the efficiency of the system and allows you to obtain the required amount of hot water with a lower electricity bill. For this purpose, it is known that it is good to collect heat on the mouth wall, where solar radiation contributes.

For this reason, this HS system uses a changeover switch to
There is a switch that allows you to select between an automatic mode that operates only when there is sunlight, and a manual mode that operates regardless of sunlight.
It is a provision. As mentioned above, in order to operate the HS system efficiently, it is better to operate it in automatic mode. but,
This HS system also collects heat from the atmosphere, so
In winter or in cold regions where the outside temperature is low, in automatic mode, which operates only when there is sunlight, the sun sets before the temperature rises, and the HS system shuts down, resulting in a situation where the user cannot be provided with sufficient space. Ta.

The conventional example will be explained below based on the drawings. Fig. 2 fi1m, 7 is a controller, a power supply that supplies electricity to the compressor 1 and the circulation pump 6, a+gii
It is a switch for switching between automatic mode and manual mode as described above.
Side a is automatic mode and side b is manual mode. 9 is a sunlight sensor that detects sunlight, 1° is a sunlight judgment circuit that judges the presence or absence of sunlight based on the signal from the sunlight sensor 9, and 11 is a hot water temperature detection circuit that generates a signal when the water temperature reaches a predetermined temperature. be.

12 is connected to the compressor 1 by a signal from the hot water temperature detection circuit 11.

This is a driver circuit that operates and stops the circulation pump 6. The operation of the conventional example will be explained above.

When the changeover switch 8 is on the a side, it is automatic mode, and when the sunlight sensor 9 detects sunlight, the sunlight judgment circuit 1
0 sends an operation signal to the hot water temperature detection circuit 11. Then,
If the hot water temperature detection circuit 11 detects that the hot water temperature is below a predetermined temperature, it further sends an operation signal to the driver circuit 12, and in response to this, the driver circuit 12 operates the compressor 1 and circulation pump 6.
to drive. When stopping, the operation is the opposite.

Naturally, if either the sunshine judgment circuit 10 or the hot water temperature detection circuit 11 issues a stop signal, the compressor 1 and circulation pump 6 will stop. Next, when the changeover switch 8 is on the b side, the hot water temperature detection circuit 11 sends an operation signal to the driver circuit 12 to operate the compressor 1 and circulation pump 6 if the hot water temperature is below a predetermined temperature. let When stopped, the operation is reversed.

With this configuration, automatic mode, which receives solar radiation and operates efficiently, can be used in winter when the outside temperature is low.

In cold regions, the hot water in the heat storage tank 5 does not reach a predetermined temperature, resulting in a shortage of hot water supply.

Purpose of the Invention The present invention solves the above-mentioned conventional problems, and provides a system that can obtain solar radiant heat, operate an efficient <f(S system), and supply sufficient hot water to users. The purpose is to

Structure of the Invention In order to achieve the above object, the present invention provides the following features:
It is equipped with a controller that automatically drives the compressor and stops the compressor after a certain period of time when it gets dark.

With the above configuration, the operation will continue for a certain period of time even after the sunlight has disappeared, so there will be no shortage of hot water.Furthermore, since the operation will start at the same time as the sunshine, the heat radiated from the sun can be used effectively. , it is possible to operate the HS system efficiently.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 3 and 4, parts having similar functions are given the same numbers as in FIG. 2.

In FIG. 3, 13 is determined by the sunlight judgment circuit 10 after sunset.
This is a delay timer circuit that continues to send a driving signal for a certain period of time even after a stop signal is sent.

Further, the delay time of the delay timer circuit 13 may be set arbitrarily by the user. The operation of the above configuration will be explained below. When the changeover switch 8 is on the a side, it is automatic mode, and when the sunlight sensor 9 detects sunlight, the sunlight judgment circuit 10 sends a driving signal to the delay timer circuit 13. The delay timer circuit 13 immediately sends an operation signal to the hot water temperature detection circuit 11 without delay. Then, the hot water temperature detection circuit 11
If the water temperature is below a predetermined temperature, an operation signal is further sent to the driver circuit 12, and in response to this, the driver circuit 12 operates the compressor 1 and the circulation pump 6. Next, in the case of a stop, the sunlight judgment circuit 10 determines whether the operating state is the same as the above until the point where the stop signal is sent, or whether the delay timer circuit 13 that received the stop signal is set by the user. After a certain period of time, a stop signal is sent to the nose detection circuit 11. Then, even if the water temperature is below a predetermined temperature, the water temperature detection circuit 11 sends a stop signal to the driver circuit 12,
The driver circuit 12 stops the compressor 1 and circulation pump 6. When the selector switch 8 is on the b side, it is a manual mode and the operation is the same as in the conventional example.

In FIG. 4, numeral 14 receives the operation signal of the sunshine judgment circuit 10 and sends the operation signal to the driver circuit 12, and also receives the stop signal of the hot water temperature detection circuit 11 and sends the operation signal to the driver circuit 12.
This is a signal selection circuit that sends a stop signal to the This signal selection circuit 14 does not receive signals for determining sunlight, stopping the circuit 10, and operating the hot water temperature detection circuit 11. Further, the user may be able to arbitrarily set the hot water temperature when the hot water temperature detection circuit 11 sends the stop signal.

The operation of the above configuration will be explained below.

When the changeover switch 8 is on the a side, it is automatic mode, and when the sunlight sensor 9 detects sunlight, the sunlight judgment circuit 10
sends an operation signal to the signal selection circuit 14. Then, the driver circuit 12 operates the compressor 1 and the circulation pump 6. Next, the sunlight sensor 9 detects sunset, and as a result,
The sunshine determination circuit 10 sends a stop signal to the signal selection circuit 14. At this time, the signal selection circuit 14 sends a stop signal to the driver circuit 1.
2, do not send a stop signal. In other words, the conditions of the compressor 1 and circulation pump 6 do not change. Next, when the hot water temperature detection circuit 11 detects that the hot water temperature is higher than the temperature set by the user, it sends a stop signal to the signal selection circuit 14. As a result, the signal selection circuit 14 sends a stop signal to the driver circuit 12, and the driver circuit 12 selects the compressor 1 and circulation pump 6.
stop. Next, when the hot water temperature detection circuit 11 detects that the hot water temperature is lower than the temperature set by the user, it sends an operation signal to the signal selection circuit 14. However, the signal selection circuit 14 does not send an operation signal to the driver circuit 12. In other words, the states of the compressor 1 and circulation pump 6 do not change. When the selector switch 8 is on the b side, it is a manual mode and the operation is the same as in the conventional example.

In this way, according to this embodiment, even after sunset, it can continue to operate for a certain period of time, so even in winter or in cold regions where the outside temperature is low,
You can economically obtain the amount of hot water you need. Furthermore, if you arbitrarily set the continuous operation time according to the outside temperature,
The required boiling temperature can be obtained. In addition, in the example shown in Fig. 4, since the stop is set to the boiling temperature of the water, the water can be operated efficiently by sunlight, and the water can be reliably heated to the temperature set by the user, even when the outside temperature is low. You can avoid the shortage of hot water in winter or in cold regions.

Effects of the Invention As described above, according to the present invention, the following effects can be obtained.

(1) In winter or in cold regions where the outside temperature is low, solar radiation can be used effectively, making it more economical and avoiding a shortage of hot water.

(2) Since the continuous operation time after sunset can be set arbitrarily, the boiling temperature can be kept at the minimum required temperature, which prevents heat radiation loss.

[Brief explanation of drawings]

Figure 1 is a circuit diagram of the S system, Figure 2 is a control block diagram of a conventional example, Figure 3 is a control block diagram of an embodiment of the present invention, and Figure 4 is a control block diagram of another embodiment of the present invention. It is a control block diagram. 1... Compressor, 3... Heat collector, 5...
...Heat storage tank. Name of agent: Patent attorney Toshio Nakao and 1 other person11
%1 Figure W, 2 Figure 9 Figure 4

Claims (1)

[Claims] (1) A heat collector installed outdoors, a compressor connected to the heat collector, and a heat storage tank connected to the compressor, and the compressor is automatically driven after dawn in the morning. , a heat pump water heater equipped with a controller that stops the compressor after a certain period of time when it gets dark at night. (Claim 2) The controller is configured to operate until the predetermined temperature reaches a predetermined temperature and then shut down if the temperature inside the heat storage tank does not reach a predetermined temperature when it gets dark at night. The heat pump water heater described.