JP4030390B2 - Hot water storage water heater - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hot water storage type hot water supply device such as a heat pump water heater or an electric water heater.
[0002]
[Prior art]
When using a conventional hot water storage tank horizontally, cover the water supply port with a baffle so that the boundary surface between water and hot water is not destroyed by the water supply from the water supply port at the bottom, and gently climb and tilt the bottom. Was to form. (For example, refer to Patent Document 1.)
[0003]
[Patent Document 1]
Japanese Patent No. 2579500 [0004]
[Problems to be solved by the invention]
By the way, with this conventional one, the momentum of the water supply is too strong to be suppressed by the baffle alone, and a flow of water upward is generated vigorously, the boundary surface is destroyed, hot water and water are mixed, and the temperature of the hot water is as a whole However, the high temperature water could not be supplied efficiently.
[0005]
[Means for Solving the Problems]
This invention pays attention to this point, and in order to solve the above-mentioned drawbacks, in particular, the structure thereof includes a horizontally long hot water storage tank in which hot water is stored by connecting a water inlet pipe and a hot water outlet pipe, and heating for heating the hot water in the hot water storage tank. A water supply auxiliary pipe that communicates with the water inlet pipe and extends in the longitudinal direction at the bottom of the hot water storage tank, and a baffle plate that extends to the left and right is provided on the water supply auxiliary pipe. A water supply hole comprising a plurality of small holes is provided in the lower water supply auxiliary pipe, and an outer periphery that prevents a water flow from the lower side to the upper side along the inner wall of the hot water storage tank is provided at a substantially intermediate portion in the vertical direction of the hot water storage tank. A water flow blocking means composed of a punching plate with a rough punching hole is provided .
[0006]
As a result, the water supplied to the water supply auxiliary pipe is restrained in momentum, and is divided into a plurality of parts and supplied from the water supply holes, and the water supplied to the hot water storage tank immediately rises around the water supply auxiliary pipe. It is blocked by the baffle plate and weakens the ascending force, and it is diffused outward to prevent the formation of water flow, so that the interface between hot water and water is well maintained without being destroyed, and the hot water stored It can supply hot water to the end.
[0007]
Furthermore, a water flow blocking means for blocking a water flow from the lower side to the upper side along the inner wall of the hot water storage tank is provided at a substantially intermediate portion in the vertical direction of the hot water storage tank. By comprising the shape of the blocking plate, it is possible to reliably prevent the water flow generated along the inner wall of the hot water storage tank from flowing into the high-temperature water layer, and further to prevent the destruction of the boundary surface.
[0008]
Matamizu flow blocking means, by which the punching holes is constituted by a punching plate made coarse toward the outer periphery, to prevent destruction of the boundary surface, of course, also serves as also reinforce the hot water storage tank.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 is a horizontal storage type hot water storage tank unit installed under the floor of the building, 2 is a heating means comprising a heat pump unit, and 3 is a piping unit connecting the hot water storage tank unit 1 and the heating means 2.
[0010]
The hot water storage tank unit 1 is connected to a horizontally long hot water storage tank 4 for storing hot water, a hot water discharge pipe 5 connected to the upper surface of the hot water storage tank 4 and a return pipe 6 from the heating means 2, and a lower part of the hot water storage tank 4. A water inlet pipe 7 and an outgoing pipe 8 toward the heating means 2 are connected to each other, and a cylindrical water supply auxiliary pipe 9 that communicates with the water inlet pipe 7 and supplies water is extended in the longitudinal direction inside the hot water storage tank 4. The terminal portion is closed.
[0011]
Further, the water supply auxiliary pipe 9 includes a baffle plate 10 that spreads outward from the left and right side walls, and a pair of water supply holes 11 that discharge water supply obliquely downward to the water supply auxiliary pipe 9 below the baffle plate 10. Are provided in the longitudinal direction.
Also, a donut comprising water flow blocking means for blocking the water flow that protrudes inward and rises from below along the inner wall of the hot water storage tank 4 around the entire middle portion of the inner wall of the hot water storage tank 4 in the vertical direction. A shaped blocking plate 12 is provided.
[0012]
The heating means 2 includes a compressor 13 for compressing a refrigerant, a refrigerant-water heat exchanger 14 as a condenser, a decompressor 15, and a heat pump circuit 17 including an air heat exchanger 16 as an evaporator, and air heat. A blower 18 for blowing air to the exchanger 16, a variable capacity circulation pump 20 provided in the middle of a circulation circuit 19 composed of the return pipe 6 and the forward pipe 8, and a refrigerant-water heat exchanger 14 inlet side of the circulation circuit 19 A heat exchange inlet temperature sensor 21 that detects the temperature of hot water flowing into the refrigerant-water heat exchanger 14 and a refrigerant-water heat exchanger 14 outlet side of the circulation circuit 19; 14 includes a heat exchange outlet temperature sensor 22 that detects the temperature of hot water flowing out from 14 and a heating controller 23 that controls the heating means 2.
[0013]
The piping unit 3 includes a mixing valve 25 that mixes high-temperature water from the outlet pipe 5 and low-temperature water from the branch pipe 24 branched from the inlet pipe 7, and a hot-water tap 26 connected downstream of the mixing valve 25. A hot water supply pipe 27, a hot water supply temperature sensor 28 provided in the hot water supply pipe 27, a hot water supply flow rate sensor 29 provided in the hot water supply pipe 27, and a hot water filling pipe branched from the hot water supply pipe 27 and connected to the circulation circuit 31 of the bathtub 30. 32, a heat retention heater 33 and a bath circulation pump 34 for retaining the bath water in the circulation circuit 31, a pressure reducing valve 35 for the water inlet pipe 7 and a pressure relief valve 36 for the hot water outlet pipe 5, and control these functional components. The hot water supply control unit 37 is configured to concentrate piping and functional parts on the piping unit 3 so that piping work during installation and maintenance work after installation can be performed easily and efficiently. And those that are particularly effective are those particularly installing the hot water storage tank unit 1 under the floor of the building block.
[0014]
Next, the operation of the embodiment of the present invention will be described.
First, when heating the hot water in the hot water storage tank 4, the heating control unit 23 activates the heat pump circuit 17 and starts driving the circulation pump 20 of the circulation circuit 19. Then, the hot water taken out from the lower part of the hot water storage tank 4 by driving the circulation pump 20 flows into the refrigerant-water heat exchanger 14 of the heating means 2 and is heated, and is returned to the upper part of the hot water storage tank 4 through the circulation circuit 19. As a result, hot water is stored.
[0015]
Here, depending on the detection values of the heat exchange inlet temperature sensor 21 and the heat exchange outlet temperature sensor 22, the output of the heat pump circuit 17 and the capacity of the circulation pump 20 are appropriately adjusted so that the hot water to be heated reaches a predetermined high temperature. It is variable. Specifically, the respective outputs and capacities are adjusted by feedforward control and / or feedback control in accordance with detection values of the heat exchange inlet temperature sensor 21 and the heat exchange outlet temperature sensor 22.
[0016]
Then, a hot water storage temperature sensor (not shown) provided on the side surface of the hot water storage tank 4 detects that a predetermined amount of hot water has been stored, or the heat exchange inlet temperature sensor 21 detects a predetermined temperature or more. Then, the hot water supply control unit 37 commands the heating control unit 23 to stop the heating operation, and the operations of the heat pump circuit 17 and the circulation pump 20 are stopped.
[0017]
On the other hand, the hot water stored in the hot water storage tank 4 is controlled by the hot water supply control unit 37 when the hot water tap 26 is opened, and the hot water in the upper part of the hot water storage tank 4 is pushed out to the hot water discharge pipe 5 by the pressure from the inlet pipe 7. The mixing valve 25 mixes the low-temperature water in the branch pipe 24 and the temperature detected by the hot water supply temperature sensor 28 so as to reach a predetermined temperature, and supplies hot water through the hot water supply pipe 27. It is also possible to fill the bathtub 30 with hot water of a predetermined temperature. The predetermined temperature is arbitrarily set by an operation remote controller (not shown).
[0018]
At this time, the amount of water supplied by the use of the hot water supply flows into the hot water storage tank 4 at the water supply pressure, but this water supply is dispersed from the water supply hole 11 of the water supply auxiliary pipe 9 and discharged downward. Furthermore, since the water flow which is going to rise immediately on the outer periphery of the water supply auxiliary pipe 9 after the discharge is disturbed by the baffle plate 10 and spreads outward, the momentum is weakened and the water flow may rise as a large water flow or a mass of water. This prevents the interface between the hot water and water from being destroyed, and allows hot water to be supplied satisfactorily to the end while maintaining the high temperature water.
[0019]
Further, when the hot water layer reaches the upper part from the center of the hot water storage tank 4, there is a risk that the water discharged downward by the auxiliary water supply pipe 9 rises vigorously along the inner wall of the hot water storage tank 4 and the boundary surface is destroyed. In the present invention, since the blocking plate 12 constituting the water flow blocking means is provided at the substantially central portion of the hot water storage tank 4, the water flow rising along the inner wall can be suppressed by the blocking plate 12. At the same time, it is guided to the center side and gently flows under the hot water layer to supply hot water to the end without breaking the boundary surface.
[0020]
Therefore, even in the horizontal type hot water storage tank 4, the full amount of hot water stored by using inexpensive electric power can be used as a hot water supply in a good amount and is very convenient to use and has a simple structure. However, it is possible to obtain a great effect.
[0021]
Next, another embodiment shown in FIGS. 4 and 5 will be described.
FIG. 4 shows that the water flow blocking means is constituted by a punching plate 39 whose punching holes 38 become rough toward the outer periphery. According to this, the water flow to be lifted can be surely prevented, and the hot water storage tank 4 itself. Therefore, the hot water storage tank 4 can be made strong.
[0022]
FIG. 5 shows a water supply auxiliary pipe 9 having a diamond shape in cross section, which is easier to produce than a cylindrical shape and can be provided at low cost.
In this embodiment, the heat pump type hot water heater has been described. However, the present invention is not limited to this, and an electric water heater using an electric heater as a heating means can provide the same effect.
[0023]
【The invention's effect】
As described above, according to the present invention, the feed water flowing into the water supply auxiliary pipe is restrained in momentum, and is divided into a plurality of parts to be supplied from the water supply holes, and the water supplied to the hot water storage tank is provided on the outer periphery of the water supply auxiliary pipe. Although it tries to rise immediately, it is blocked by the baffle plate and weakens the lifting force, and it is diffused outward to prevent the formation of water flow, so the interface between hot water and water is good without being destroyed The hot water stored in the hot water can be supplied to the end as it is.
[0024]
Furthermore, a water flow blocking means for blocking a water flow from the lower side to the upper side along the inner wall of the hot water storage tank is provided at a substantially intermediate portion in the vertical direction of the hot water storage tank. By comprising the shape of the blocking plate, it is possible to reliably prevent the water flow generated along the inner wall of the hot water storage tank from flowing into the high-temperature water layer, and further to prevent the destruction of the boundary surface.
[0025]
Matamizu flow blocking means, by which the punching holes is constituted by a punching plate made coarse toward the outer periphery, to prevent destruction of the boundary surface, of course, also he serves as also reinforce the hot water storage tank.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a hot water storage type hot water supply apparatus according to an embodiment of the present invention.
FIG. 2 is a sectional view of the hot water storage tank.
FIG. 3 is a sectional view of the water supply auxiliary pipe. FIG. 4 is a sectional view of a hot water storage tank showing another embodiment.
FIG. 5 is a cross-sectional view of a water supply auxiliary pipe showing another embodiment.
[Explanation of symbols]
2 Heating means 4 Hot water storage tank 5 Hot water discharge pipe 7 Water intake pipe 9 Water supply auxiliary pipe 10 Baffle plate 11 Water supply hole 12 Blocking plate (water flow blocking means)
39 Punching plate (water flow blocking means)

Claims (1)

A water supply tank having a horizontally long hot water storage tank connected to a water inlet pipe and a hot water outlet pipe for storing hot water, and a heating means for heating the hot water in the hot water storage tank. provided by extending the auxiliary tube in the longitudinal direction, provided with a water supply hole comprising a plurality of small holes is further along with the water supply secondary pipe provided with baffle plates extending horizontally, the water supply auxiliary pipe lower than this baffle, further Near the middle of the hot water tank in the vertical direction, there is provided a water flow blocking means comprising a punching plate having a rough punching hole toward the outer periphery that prevents the water flow from the lower side to the upper side along the inner wall of the hot water tank. Hot water storage hot water supply device characterized by things.

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