JPS613944A - Heat pump type hot-water supplier - Google Patents

Abstract

PURPOSE:To contrive energy saving and improvement of handling property by a constitution wherein a circulation circuit, equipped with a flow amount sensor, is formed so that water, sucked into a heat accumulating tank, is heated by a heat pump type heat exchanger to make it hot-water and supply it to a hot-water supplying port. CONSTITUTION:During the operation of the heat pump 1, water is circulated by a circulating pump 4 into the heat accumulating tank 2 through the flow amount sensor 8 as shown by the arrow signs of full line in the diagram heat exchange is effected in the heat exchanger 3 between the water and a refrigerant heated by the heat pump 1, thereafter, hot-water is reserved in the heat accumulating tank 2. The rotating speed of the pump 4 is controlled by a heat-up hot-water temperature sensor 7 to make the temperature of hot-water constant. The hot-water is supplied to the demanding source thereof as shown by the arrow signs of broken line in the diagram and water is supplied through the flow amount sensor 8 in accordance with the used amount of hot- water. According to this constitution, the amount of supplying water and the amount of using hot-water are indicated correctly in accordance with the load of hot-water supplying and energy saving as well as the improvement of handling property may be contrived.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a one-circulation type heat pump that circulates water in a heat storage tank to a heat exchanger to exchange heat with a refrigerant heated by a heat pump and store hot water. This relates to water heaters.

Conventional configuration and problems Conventionally, in this type of water heater, controls such as setting the amount of hot water above the line and displaying the remaining hot water were performed using individual temperature detection sensors. If you change it according to the hot water supply load, you will need as many temperature detection sensors as you want to change, and since the hot water supply load varies widely depending on the season, number of family members, personal preferences, etc., it is necessary to cover everything. teeth,
Furthermore, even if multiple temperature detection sensors are used, the temperature can only be varied in stages, making it impossible to set the amount of hot water according to the heating load, resulting in energy savings such as over-heating the hot water. was greatly damaged.

In addition, when displaying the remaining hot water, as many temperature detection sensors are required as there are to display it, and there are problems such as only being able to display an approximate step-by-step display, or not being able to display according to the hot water supply rate, which is likely to cause errors. had.

The configuration of the conventional example described above was as shown in FIG. 1, for example. In Figure 3, 1 is a heat pump, 2
is a heat storage tank.

3 is a heat exchanger in which the refrigerant heated by the heat pump 1 and the water in the heat storage tank 2 exchange heat, and 4 is a circulation pump that sends water in the heat storage tank 217E to the heat exchanger 3.

5 is a boiling water amount sensor, and %6 is a remaining meter display sensor.

7 is a hot water temperature sensor that keeps the temperature of the hot water stored in the heat storage tank 2 constant.

Although not shown, the heat bomb circulation pump 4, the above-line hot water amount sensor 5, the remaining hot water display sensor, and the hot water temperature sensor 7 are electrically connected.

Purpose of the Invention The present invention solves the above-mentioned conventional problems, and provides a water heater with improved energy saving performance and ease of use by accurately displaying the amount of water supply and the amount of water used according to the hot water supply load. The purpose is to

Structure of the Invention To achieve the above object, the present invention sucks water through the water supply port provided at the bottom of the heat storage tank using a circulation pump, and returns it to the heat storage ellipse from the water supply port at the top of the heat storage tank via the heat exchanger provided by the heat pump. form a circulation circuit.

By circulating the water in the heat storage tank once with the circulation pump, the heat of the refrigerant heated by the heat pump is
In a single-circulation type heat pump water heater that absorbs heat and stores it in a storage tank, a flow rate sensor is provided in the circulation circuit between the water supply port and the hot water supply port, so that the flow rate can be detected during heat pump operation and hot water supply. be.

With the above configuration, multiple temperature detection sensors were used to set the amount of hot water in the section and display the remaining hot water.
All you need is a flow sensor.

In addition, by using a flow rate sensor, the amount of hot water above the line can be variably set according to the hot water supply load, so the amount of hot water that has been boiled can be adjusted. There will be no waste such as amarasu, and energy saving will be improved.

The remaining hot water display also improves the accuracy of displaying the amount of hot water used.
User-friendliness is improved as there is no worry about the tooth being cut. In addition, since the remaining hot water is accurately displayed, the overuse of hot water is eliminated and resource saving is improved.

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

In FIG. 1, 1 is a heat pump, and 2 is a heat storage tank.

3 is a heat exchanger in which the refrigerant heated by the heat pump 1 and the water in the heat storage tank 2 exchange heat, and 4 is a circulation pop that sends the water in the heat storage tank 2 to the heat exchanger 3.

7 is a linear hot water temperature sensor that keeps the linear hot water temperature constant;
is a flow sensor.

In FIG. 2, reference numeral 9 is a fixture that changes the flow of water into a spiral state, and reference numeral 1o is a rotating ball that is rotated by the flow of water that has become a spiral state due to the fixed blades 9.

11 is a permanent magnet that outputs a signal by rotating the rotating ball 100 times.

Although not shown, the heat pump circulation pump 4, the hot water temperature sensor 7, the flow rate sensor 8, and the controller (not shown) are electrically connected.

Hereinafter, the effects of the above configuration will be explained.

While the heat pump 1 is in operation, the water in the heat storage tank 2 is circulated by the circulation pump 4 via the flow rate sensor 8 as shown by the solid arrow in FIG. The heat is stored in the heat storage tank 2. still,
When performing heat exchange, the hot water temperature sensor 7 installed at the outlet of the heat exchanger 3 keeps the hot water temperature constant by changing the rotation speed of the circulation pump 4. The temperature of is always constant. Therefore, by setting the amount of hot water passing through the flow rate sensor 8, the linear amount of hot water can be variably set in accordance with the hot water supply load. Also, when hot water is supplied, hot water flows as indicated by the dashed arrow.

Since the amount of hot water used passes through the flow rate sensor 8, the amount of hot water used can be clearly grasped.

In this way, according to this embodiment, multiple temperature detection sensors, which were conventionally used for displaying remaining hot water and setting the above-line hot water amount, can be used. All you need is 8 flow rate sensors. In addition, it is possible to set the amount of hot water on a variable line in accordance with the hot water supply load and accurately display the remaining hot water, which has the effect of improving energy saving and ease of use as mentioned above.

Furthermore, since water always passes through the flow rate sensor 8, the stress applied to the fixed blades 9 and rotating balls 10 is small, resulting in long life.

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

(1) A single flow sensor can replace the multiple temperature sensors that were conventionally used to set the amount of hot water above the line and display the remaining hot water.

? ) It is now possible to set the variable line hot water amount according to the usage load, and there is no need to waste the hot water that you have already boiled, improving energy efficiency.

(3) The accuracy of displaying the amount of hot water used is improved, eliminating the anxiety of running out of hot water and improving usability.

(4) By accurately displaying the remaining hot water, hot water will not be misused and resource saving will be improved.

(5) iM, since water always passes through the volume sensor,
There is no stress on the sensor and it has a long lifespan.

[Brief explanation of the drawing]

FIG. 1 is a system diagram of one embodiment of the present invention. FIG. 2 is an enlarged view of the same flow rate sensor, and FIG. 3 is a diagram of a conventionally used system. f 1 = -e -) z: y, 2 ”'
”, 1141.3.1101.ゎ Exchanger, 4° circulation pump, 5° boiling water amount sensor, 6...
Remaining hot water display sensor, 7...Line hot water temperature sensor, 8
...Flow rate sensor, 9... Fixture, 1
0 =゛=Rotating ball, 11°・°°pa Hikyu magnet. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 ↓

Claims (1)

[Claims] A circulation circuit is formed in which water is sucked in by a circulation pump from a water supply port provided at the bottom of the heat storage tank and returned to the hot water supply port at the top of the heat storage tank via a heat exchanger using a heat pump, and the circulation circuit is created between the water supply port and the hot water supply port. A heat pump water heater equipped with a flow sensor.