JPH0736254Y2 - Hot water supply device having display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a hot water supply device having a display device for intuitively recognizing a residual hot water amount and hot water temperature distribution in a hot water storage tank. .

(Prior Art) As a conventional example having a function of displaying the amount of remaining hot water in a hot water storage tank in a hot water supply device, there is, for example, the device described in JP-A-61-201117. In the device, a temperature variable resistor extending vertically is installed in a replacement type hot water supply tank in which the same amount of water as the amount of hot water discharged from the upper side is replenished to the lower side.
The amount of remaining hot water is detected by utilizing the fact that the resistance of the temperature variable resistor changes according to the depth of the hot water region on the upper side.

The detection result is usually displayed numerically on a digital display device, or is displayed to the user by turning on a display lamp corresponding to the numerical value.

(Problems to be solved by the invention) By displaying the hot water temperature together with the amount of remaining hot water as described above, the device becomes easier for the user to use. Therefore, a temperature sensor for hot water temperature detection is installed in the hot water storage tank. ,
A device having a display function of the detected temperature has also been put into practical use, but in that case, since it is generally performed by using a display device different from the above-mentioned remaining hot water amount, each display content of the remaining hot water amount and the hot water temperature is displayed. There is a problem that it is not intuitive because it is necessary to make a judgment in consideration of the user. It is also possible to display the remaining hot water amount and the hot water temperature by sharing the same digital display device, but in this case, since the user needs to operate the changeover switch, the operability is further deteriorated. There are also problems.

The present invention has been made in view of the above, and an object thereof is to provide a hot water supply device having a display device that displays the remaining hot water amount and the hot water temperature distribution in the hot water storage tank in an intuitively recognizable manner. is there.

(Means for Solving the Problem) Therefore, in a hot water supply apparatus having a display device of the present invention, a plurality of hot water temperature sensors 11 to 14 are attached in the vertical direction of a hot water storage tank 2 having a structure for discharging hot water from the upper portion, and the hot water supply sensors respond to each attachment position. While configured to detect the hot water temperature at the water level, respectively, in the display device, the display unit 31-34 having a change region that visually changes by energization, respectively corresponding to each hot water temperature sensor 11-14. In each of the display portions 31 to 34, a plurality of them are arranged in parallel, and between the first display area 42 having a plurality of first change areas 41 ... Second having a plurality of formed second changing regions 43 ...
A display area 44 is provided, and when the temperature detected by the hot water temperature sensors 11 to 14 is equal to or lower than the intermediate reference temperature, both of the first and second display areas 42 and 44 are de-energized, and the detected temperature is the intermediate reference temperature. Only one of the first and second display areas 42, 44 is energized until the set temperature is exceeded, and when the detected temperature reaches the set temperature, the first and second display areas 42, 44,
It is configured to energize both 44 and the above display
The reference numerals 31 to 34 are arranged side by side in a state imitating the inside of the hot water storage tank 2 such as the bottom portion, the middle portion and the upper portion of the hot water storage tank 2, and the detected values of the hot water temperature sensor 14 attached to the upper portion of the hot water storage tank 2 A hot water temperature sensor is installed on the bottom of the hot water storage tank 2 for input to the display 34, which is arranged in a manner similar to the bottom of the hot water storage tank 2.
The detected value of 11 is input to the display unit 31 arranged above the hot water storage tank 2 so that the hot water storage tank 2
It is characterized in that the hot water temperature state from the upper part to the bottom part can be displayed by imitating the hot water temperature condition from the bottom part to the upper part of the hot water storage tank 2.

(Operation) According to the hot water supply device having the above display device, the hot water storage tank 2
Since the hot water temperatures detected by the plurality of sensors 11 to 14 mounted in the up and down direction are displayed on the display units 31 to 34, it is possible to display the temperature distribution state of the hot water in the hot water storage tank 2. Become. As a result, both can be distinguished at a glance without switching the display of the hot water temperature and the remaining hot water amount, so that a display function excellent in intuitiveness and operability can be provided.
Moreover, since the remaining hot water amount is displayed as remaining at the bottom of the tank by the display units 31 to 34 arranged in a manner similar to the hot water storage tank 2, it becomes possible to grasp the remaining hot water amount according to the image of the user, The intuitiveness of the display function is further improved.

(Example) Next, a specific example of a water heater having a display device of the present invention will be described in detail with reference to the drawings.

First, FIGS. 7 to 9 show the structure of a hot water storage tank in a heat pump type hot water supply apparatus configured by applying the present invention. As shown in FIG. This hot water storage tank 2
As shown in FIG. 8, a water supply pipe 4 with a pressure reducing valve 3 interposed in the middle is connected to the bottom portion, and a hot water supply pipe 5 is connected to the upper end portion as shown in FIG. When a calan (not shown) connected to the tip of the hot water supply pipe 5 is opened, the hot water in the hot water storage tank 2 is pushed up from the upper side by the pressure of tap water acting through the water supply pipe 4. Hot water is discharged through the hot water supply pipe 5, and the same amount of water as the discharged water amount is replenished to the bottom side inside the hot water storage tank 2 through the water supply pipe 4. Further, in the hot water storage tank 2, since there is a high / low temperature difference state in the same direction as the gravity action direction, almost no convection occurs, so that the upper hot water and the lower hot water are stored separately. A relief valve discharge pipe 8 is connected midway between the water supply pipe 4 and the hot water supply pipe 5 via safety valves 6 and 7, respectively, to prevent an abnormal rise in the pressure in the hot water storage tank 2. ing.

As shown in FIG. 7, a pair of elliptical flanges 9 and 9 are attached to the cylindrical side wall surface of the hot water storage tank 2 at positions on the bottom side thereof. As shown in the figure, in this case, a hot water supply heat exchanger 10 composed of two heat exchange coils is fixed and arranged in the hot water storage tank 2. In the figure,
20 is an electric heater for auxiliary heating.

The hot water supply heat exchanger 10 is connected to a heat source side unit (not shown) having a compressor and a heat source side heat exchanger to form a refrigerant circulation circuit. When the compressor is operating, the refrigerant circulates from the hot water supply heat exchanger 10 to the heat source side heat exchanger. At this time, the heat exchanger 10 for hot water supply acts as a condenser, and the heat of condensation is given to the hot water in contact with it.
The hot water in the hot water storage tank 2 is heated.

Then, on the outer peripheral wall surface of the hot water storage tank 2, as shown in FIG. 9, a first hot water temperature sensor 11 constituted by, for example, a thermistor or the like at a height position near the upper end of the hot water supply heat exchanger 10.
Are attached, and further, the second to fourth hot water temperature sensors 12 to 14 are attached above the first hot water temperature sensor 11 at appropriate intervals, and the hot water at each water level corresponding to each attachment position is attached. It is designed to detect temperature. FIG. 11 shows a sectional view showing a mounting state of the first hot water temperature sensor 11, for example. In the figure, 15 indicates the side wall surface of the hot water storage tank 2,
A heat insulating material 16 made of foamed polyethylene is wound around the outer periphery of the hot water storage tank 2 for keeping heat. An aluminum thin plate 17 is further locally arranged on the inner surface of the heat insulating material 16, and the aluminum thin plate 17 is provided. The detecting portion of the first hot water temperature sensor 11 is sandwiched between the side wall surface 15 and the side wall surface 15.

Note that in FIG. 9, reference numeral 18 denotes a control box in which a hot water supply control device is installed, and the control box 18 is arranged on the inner surface of the front door 19 of the casing 1.

On the other hand, FIG. 6 shows a front view of a remote control box 21 connected to the hot water supply control device in the control box 18 and installed in a kitchen or the like. This remote control box
21 includes a hot water supply heating operation switch 22 and a hot water temperature setting switch 23.
Etc. are provided, and when the hot water supply heating operation switch is turned on, the hot water temperature detected by the first hot water temperature sensor 11 at the lowest position among the hot water temperature sensors 11 to 14 reaches the set hot water temperature. Therefore, the hot water supply heating operation is started until the entire hot water in the hot water storage tank 2 reaches the set hot water temperature. Further, the remote control box 21 is further provided with a display unit 24 having both display functions of hot water temperature and remaining hot water amount, and the configuration of the display unit 24 will be described below with reference to FIG. .

The display unit 24 is an LCD (Liquid Crystal) such as a liquid crystal.
1) shows a clear view pattern in a fully energized state of a change region (hereinafter referred to as a clear view pattern) which is visually changed by energization. As shown in the figure, the display unit 24 has four rectangular display portions 31 to 34 (however, the upper side of the uppermost display portion 31 has an arc shape).
Are vertically adjacent to each other. And each display
31 to 34 are a first display region 42 in which a plurality of linear first distinct vision patterns (first change regions) 41 ... 41 which are inclined to the left from the upper side and extend downward are provided in parallel with each other, and And a second display region 44 having a plurality of second distinct vision patterns (second change regions) 43 ... 43 which are inclined from the lower side to the right between the first distinct vision patterns 41. Has been done. Note that each second distinct vision pattern 43 has a wider linear shape than the first distinct vision pattern 41.

The energization of the first and second display areas 42 and 44 of the respective display portions 31 to 34 depends on the hot water temperatures detected by the four hot water temperature sensors 11 to 14 attached to the hot water storage tank 2 described above. The hot water temperature sensors 11 to 14 and the respective display units will be described in correspondence with each other.

First of all, the first is attached to the lowest position of the hot water storage tank 2.
The hot water temperature sensor 11 is associated with the display unit 31 at the uppermost position in the display unit 24. The hot water temperature detected by the first hot water temperature sensor 11 is a predetermined intermediate temperature, for example,
Below 40 ° C, both the first and second display areas 42 and 44 are in the non-energized state, and above 40 ° C, the first
The display area 42 is energized, and the first distinct vision pattern 41.
・ Change 41 to the visible state. Further, when the hot water temperature detected by the first hot water temperature sensor 11 has reached the set hot water temperature, the second display area 44 is also energized to generate the first clear vision pattern 41.
The control that changes the second clear vision pattern 43 to the visible state together with 41 is performed.

Next, the second hot water temperature sensor 12 from the bottom in the hot water storage tank 2
With respect to, the display unit 24 is associated with the second display unit 32 from the top, and according to the detected hot water temperature, according to the comparison result of the intermediate temperature and the set hot water temperature, as described above. Then, three-stage switching is performed. And hot water storage tank 2
The third hot water temperature sensor 13 from the bottom is the display unit.
24 corresponds to the third display unit 33 from the top in 24, and the hottest water temperature sensor 14 in the hot water storage tank 2 corresponds to the lowest display unit 34 in the display unit 24.
The display patterns are switched in three steps based on the detected hot water temperature.

With the above configuration and the switching control of the display pattern, the first
When the display state shown in the figure is obtained, it means that the entire hot water storage tank 2 is boiled to the set hot water temperature. Then, when the hot water is used from the above and the amount of the same amount of the supplementary water as the amount of the supplementary water used at the bottom side of the hot water storage tank 2 increases, first, the temperature detected by the first hot water temperature sensor 11 becomes the water temperature state. In order to reduce the temperature, the display state at this time is, as shown in FIG. 2, the third display unit 32 from the bottom to the display of the energized state, and the hot water is further used to display the second hot water temperature. When the temperature detected by the sensor 12 drops to the water temperature state, as shown in FIG. 3, the second display unit 33 from the bottom is displayed.
When the temperature detected by the third hot water temperature sensor 13 is lowered to the water temperature state, only the lowermost display unit 34 is sequentially turned on to indicate the energized state, as shown in FIG. Switch. Due to the change in the display state as described above, for example, in the state shown in FIG. 2, the remaining hot water amount is three quarters of the internal volume of the hot water storage tank 2, for example, 300 l, and in the state shown in FIG. 3, the remaining hot water amount is 4 minutes. No. 2, for example, 200 l, and the amount of remaining hot water in the state shown in FIG. And, for example,
When the hot water supply heating operation switch 22 is turned ON to start the hot water supply heating operation when the temperature drops to 100 l, for example, when the display state shown in FIG. 5 is reached, 200 l has already boiled to the set hot water temperature, and 100 liters of the remaining 200 liters is 40 ° C
It is determined that the heating has progressed to an intermediate temperature exceeding 0.

Thus, in the above, the high and low temperature state of the hot water temperature detected by the hot water temperature sensors 11 to 14 is shown by the change in the ratio of the visualization region in each of the display units 31 to 34, and an intuitively determinable display is performed. It has become a thing. In addition, by arranging a plurality of display units 31 to 34 in association with each hot water temperature sensor 11 to 14, the temperature distribution state of the hot water in the hot water storage tank 2 is displayed, whereby the hot water temperature and the residual hot water amount are displayed. Without switching the display
Since both can be discriminated at a glance, the water heater has a display device excellent in intuition and operability.

Moreover, since the remaining hot water amount is displayed as remaining at the bottom of the tank by the display units 31 to 34 arranged in a manner similar to the hot water storage tank 2, it becomes possible to grasp the remaining hot water amount according to the image of the user, The intuitiveness of the display function is further improved.

The specific embodiment of the present invention has been described above,
The above embodiments do not limit the present invention, and various modifications can be made within the scope of the present invention. For example, in the above, an example in which the display unit is configured by the LCD is shown, but other configurations such as a combination of the screen members in the first and second distinct vision patterns 41 and 43 and the light emitting source may be used. Although the heat pump type hot water supply device has been described above as an example, the present invention can be applied to a hot water supply device having another heating source such as an electric heater.

(Effect of the Invention) As described above, according to the hot water supply apparatus having the display device of the present invention, the hot water temperatures detected by the plurality of sensors mounted in the vertical direction of the hot water storage tank are displayed on the display unit. Therefore, the temperature distribution state of the hot water in the hot water storage tank is displayed. As a result, both can be distinguished at a glance without switching the display of the hot water temperature and the remaining hot water amount, so that a display function excellent in intuitiveness and operability can be provided. Moreover, since the amount of remaining hot water is displayed as remaining at the bottom of the tank by the display section that is arranged imitating the hot water storage tank, it is possible to grasp the amount of remaining hot water according to the user's image, and intuitive display function. Sex is further improved.

[Brief description of drawings]

FIG. 1 is an enlarged view of a display unit provided in a remote control box in the hot water supply device according to the present invention, FIGS. 2 to 5 are examples of display states on the display unit, and FIG. 6 is a view showing the remote control box. Front view, FIG. 7, FIG. 8 and FIG. 9 are front view, left side view, right side view, and FIG. 10 of the hot water storage tank in the hot water supply apparatus, respectively, and FIG. 10 is a sectional view taken along line xx of FIG.
FIG. 11 is a schematic sectional view showing how the hot water temperature sensor is attached to the side wall surface of the hot water storage tank. 2 ... Hot water storage tank, 11-14 ... Hot water temperature sensor, 31-34 ...
Display unit, 41 ... First distinct vision pattern (first change region), 42
...... First display area, 43 ...... Second clear vision pattern (second change area), 44 ...... Second display area

Front page continuation (72) Shinji Ehira Inventor Shinji Okamoto, Okamoto-cho, Shiga Prefecture 2 at Daikin Industrial Co., Ltd. Shiga Works (72) Inventor Takayuki Sugimoto 2 Odai, Okamoto-cho, Kusatsu City, Shiga Prefecture 2 Daikin Koga Kogyo Co., Ltd. (56) References JP-A-51-61288 (JP, A) SAI 57-60060 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A hot water storage tank (2) having a structure for discharging hot water from above.
A plurality of hot water temperature sensors (11 to 14) are installed in the up and down direction to detect the hot water temperature at the water level corresponding to each mounting position. A plurality of display parts (31 to 34) having the above are arranged in parallel so as to correspond to the respective hot water temperature sensors (11 to 14), and further, in the respective display parts (31 to 34), a plurality of parallel display parts are provided. A first display area (42) having a first change area (41), and a plurality of second change areas (43) formed between the first change areas (41). A second display area (44) is provided, and the hot water temperature sensor (11 to 1)
When the temperature detected by 4) is below the intermediate reference temperature, both the first and second display areas (42) and (44) are de-energized until the detected temperature exceeds the intermediate reference temperature and reaches the set temperature. Only one of the first and second display areas (42) (44) is energized, and when the detected temperature reaches the set temperature, both the first and second display areas (42) (44) are energized. The display parts (31 to 34) are arranged side by side in the state of imitating the inside of the hot water storage tank (2) such as the bottom part, the middle part and the upper part of the hot water storage tank (2). The detection value of the hot water temperature sensor (14) attached to the upper part of the hot water storage tank (2) is input to the display unit (34) arranged imitating the bottom of the hot water storage tank (2), and the hot water storage tank (2) The detected value of the hot water temperature sensor (11) attached to the bottom is used as the hot water storage tank (2).
The temperature of the hot water from the top to the bottom of the hot water storage tank (2) reaches from the bottom to the top of the hot water storage tank (2). A hot water supply device having a display device, which is capable of displaying in a manner similar to the hot water temperature state.