Heat storage type water heater and storage type heat pump water heater

Abstract

To prevent agitation of fluid (water, hot water) within a tank even if a baffle plate is installed in an inclination part of the tank.SOLUTION: A heat storage type hot water supply device is configured such that a baffle plate installed in a lower inclination area in a position opposite to an inflow direction of water from a water supply port of a hot water storage tank having a drain port has an outer peripheral edge in which an edge projects toward a bottom wall surface of the hot water storage tank, an angle of the outside of the baffle plate formed by an extension line of the outer peripheral edge of the baffle plate and the bottom wall surface of the hot water storage tank is set to an outer peripheral side angle, and the outer peripheral side angle of a proximity area is larger than the outer peripheral side angle of a remote area when a side closer to the drain port of the baffle plate is set to be the proximity area and a side away from the drain port is set to be the remote area so as to solve problems.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a heat storage type water heater and a storage type heat pump water heater, and particularly to a heat storage type water heater and a storage type heat pump water heater suitable for those provided with a baffle plate for suppressing agitation of water or hot water flowing into a tank.

Background Art

[0002] As a technology for reducing energy consumption related to hot water supply, there is a technology for storing hot water amount to be used in a hot water storage tank before use. When obtaining hot water to be used on demand, generally a high supply heat amount is required, and it is necessary to increase the size of the equipment or use an energy source with a high energy density. On the other hand, by the method of performing heat storage before use, for example, since the amount of hot water used in a day can be secured over 24 hours, a system using a small device or a heat source with a low energy density becomes possible. As a method of storing hot water in a hot water storage tank, a method is known in which tap water is previously stored in the hot water storage tank and the water is heated using a heat source machine and stored in the hot water storage tank. In this method, a temperature stratification is formed in which the lower part of the hot water storage tank is a cold water region and the upper part of the hot water storage tank is a hot water region. Although hot water and cold water are mixed in the hot water storage tank, convection is less likely to occur due to the difference in density, and the temperature equalization is suppressed. Therefore, in operating the above method, for each of the water supply to the lower part of the hot water storage tank or the return of the hot water to the upper part of the hot water storage tank, a technology that does not cause convection as much as possible is required. As a prior art document related to such a technology, Patent Document 1 can be cited. In this Patent Document 1, a baffle plate forming a plane perpendicular to the water inlet direction is provided on the water inlet side at the lower part of the vertical central axis of the hot water storage tank, and by forming an edge on the outer periphery of this baffle plate, a technology for suppressing the mixing of the temperature stratification due to water supply is described.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] According to the above-mentioned Patent Document 1, the water that enters the lower part of the hot water storage tank collides with the baffle plate, and the flow that collides with the baffle plate flows out into the hot water storage tank from the gap between the baffle plate and the bottom surface of the hot water storage tank, thereby generating a flow field towards the entire circumference inside the hot water storage tank. As a result, since the maximum flow velocity is lower than that of the flow at the water supply port, the kinetic energy of the flow is reduced, and the stirring inside the hot water storage tank is suppressed.

[0005] By the way, among various hot water storage tanks, there are some provided with a drain port on the bottom surface of the hot water storage tank assuming cleaning inside the hot water storage tank and water use in an emergency.

[0006] In this type of hot water storage tank, for the purpose of discharging the water inside the hot water storage tank without adding energy such as a pump, the drain port provided on the bottom surface of the hot water storage tank has a structure located at the lowest side inside the hot water storage tank.

[0007] For this reason, there is a part on the bottom surface of the hot water storage tank that slopes towards the drain port on the bottom surface of the hot water storage tank, and the water supply port for supplying tap water is located on the sloping part.

[0008] When the baffle plate described in Patent Document 1 is provided at a position facing the water supply direction of the water supply port located on the sloping part of the bottom surface of such a hot water storage tank, by installing the baffle plate perpendicular to the water supply direction, the water flowing out from the gap between the outer peripheral edge of the baffle plate and the bottom surface of the hot water storage tank will have a flow that climbs the slope of the sloping part of the bottom surface of the hot water storage tank and a flow that descends the slope.

[0009] However, in this case, the upper part of the hot water storage tank may be stirred by the flow of water climbing the slope of the sloping part of the bottom surface of the hot water storage tank, and there is a risk that the stirring inside the hot water storage tank cannot be sufficiently suppressed.

[0010] Also, at the top of the hot water storage tank, for the purpose of discharging the hot water in the hot water storage tank, the hot water outlet provided at the top of the hot water storage tank is structured to be located at the uppermost side within the hot water storage tank.

[0011] Therefore, at the top of the hot water storage tank, there is a portion that slopes toward the hot water outlet at the top of the hot water storage tank, and the hot water inlet for supplying hot water is located in the sloped portion.

[0012] When a baffle plate described in Patent Document 1 is provided at a position facing the inflow direction of the hot water inlet located in the sloped portion at the top of such a hot water storage tank, by installing the baffle plate perpendicular to the inflow direction of the hot water, a flow of hot water flowing out from the gap between the outer peripheral edge of the baffle plate and the top of the hot water storage tank will result in a flow down the slope and a flow up the slope of the sloped portion at the top of the hot water storage tank.

[0013] However, in this case, the lower part of the hot water storage tank may be stirred by the flow of hot water down the slope of the sloped portion at the top of the hot water storage tank, and there is a risk that the stirring within the hot water storage tank cannot be sufficiently suppressed. The present invention has been made in view of the above points, and its object is to provide a heat storage type water supply device and a storage type heat pump water supply device that can suppress the stirring of the fluid (water, hot water) within the tank even when a baffle plate is installed in the sloped portion of the tank.

Means for Solving the Problems

[0014] The heat storage type water supply device of the present invention, in order to achieve the above object, comprises a tank and a heat source machine connected to the tank, wherein the bottom of the tank is connected to the inflow side of the heat source machine, and the top of the tank is connected to the outflow side of the heat source machine. The tank is provided with a water inlet for allowing water to flow in at its bottom, a drain outlet for allowing water to flow out, a hot water inlet for allowing hot water to flow in at its top, and a hot water outlet for allowing hot water to flow out. And, a lower sloped region that rises outward from the drain outlet and BeforeIt has an upper inclined region that descends outward from the water outlet, and the water inlet is arranged in the lower inclined region. Together with The hot water inlet is arranged in the upper inclined region. A heat storage type water heater in which a baffle plate is installed in the lower inclined region at a position facing the inflow direction of water from the water inlet and / or in the upper inclined region at a position facing the inflow direction of hot water from the hot water inlet. The baffle plate has an outer peripheral end portion whose end portion protrudes toward the bottom wall surface and / or the top wall surface of the tank. The angle outside the baffle plate formed by the extension line of the outer peripheral end portion of the baffle plate and the bottom wall surface and / or the top wall surface of the tank is defined as the outer peripheral side angle. When the side close to the drain port or the water outlet of the baffle plate is defined as the proximity region and the side far from the drain port or the water outlet is defined as the remote region, the outer peripheral side angle of the proximity region is configured to be larger than the outer peripheral side angle of the remote region. The baffle plate is characterized in that it is arranged on the extension line of the inflow direction of the water flowing through the water inlet and is parallel to the lower inclined region.

[0015] In addition, in order to achieve the above object, the storage type heat pump water heater of the present invention includes at least a compression means for compressing a refrigerant, a heating means for heating water sent by the refrigerant compressed by the compression means, an expansion means for expanding the refrigerant, and an evaporation means for heating the refrigerant. A heat source machine is connected to a storage tank of a heat storage type water heater, and an annular flow path in which the compression means, the heating means, the expansion means, and the evaporation means are connected in an annular shape is formed. The refrigerant is sealed in the annular flow path. The heat storage type water heater is a heat storage type water heater having the above configuration.

Effects of the Invention

[0016] According to the present invention, even if a baffle plate is installed in the inclined portion of the tank, stirring of the fluid (water, hot water) in the tank can be suppressed.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Mode for Carrying Out the Invention

[0018] Hereinafter, based on the illustrated embodiments, the heat storage type water heater and the stored hot water type heat pump water heater of the present invention will be described. In each figure, the same reference numerals are used for the same components.

Embodiment

[0019] Fig. 1 shows a schematic diagram of a CO2 heat pump water heater (stored hot water type heat pump water heater) in which the heat storage type water heater of the present invention is adopted.

[0020] As shown in Fig. 1, the CO2 heat pump water heater is roughly composed of a heat source machine 101 including a compressor 102 as a compression means, a water-cooled refrigerant heat exchanger 103 as a heating means, an expansion valve 104 as an expansion means, an evaporator 105 as an evaporation means, and a propeller fan 106, and a hot water storage tank 1.

[0021] The compressor 102, the water-cooled refrigerant heat exchanger 103, the expansion valve 104, and the evaporator 105 are connected in order by pipes, and the evaporator 105 and the compressor 102 are also connected by pipes to form a closed loop. By enclosing R744, which is a CO2 refrigerant, in this loop, a heat pump cycle (circular flow path 100) is formed.

[0022] The evaporator 105 is composed of fins and heat transfer tubes. The laminated fins are penetrated by the heat transfer tubes, and air can flow between the heat transfer tubes. As a means for circulating this air, a propeller fan 106 is installed.

[0023] The hot water storage tank 1 has a hollow structure in which the top and bottom of a cylindrical sheet metal are covered with conical sheet metals, and this is covered with a heat insulating material and arranged in a box-shaped structure (in the following description, the lid provided on the upper side of the hot water storage tank 1 is called the tank top 3, and the lid provided on the lower side of the hot water storage tank 1 is called the tank bottom 2). Two holes penetrating the sheet metal are provided at the tank bottom 2, a drain port 5 (see Fig. 2) is provided at the apex of the conical structure (which is also the vertical central axis P of the hot water storage tank 1), and a water supply port 4 (see Fig. 2) is provided in the middle of the lower inclined region 9a.

[0024] The drain port 5 is connected to the outside of the hot water storage tank 1 via a drain valve 110. By opening the drain valve 110, the inside of the hot water storage tank 1 is opened to the outside. Also, the water supply port 4 is connected via a water pipe 108 and a pressure reducing valve 111, and is connected to the water-cooled medium heat exchanger 103 of the heat source unit 101. A water supply pump 107 is installed between the water supply port 4 and the water-cooled medium heat exchanger 103. By this water supply pump 107, the water stored in the hot water storage tank 1 can be supplied to the water-cooled medium heat exchanger 103. Therefore, the water supply port 4 also serves as a water supply port 6 (see FIG. 2) for the heat source unit 101.

[0025] On the other hand, as shown in FIG. 15, for the tank top 3, a hot water outlet 8 is provided at the apex of the conical structure (which is also the vertical central axis P of the hot water storage tank 1), and a hot water inlet 7 is provided in the middle of the upper inclined region 9b. The hot water inlet 7 is connected to the outlet side of the water-cooled medium heat exchanger 103, thereby constituting a path through which water flows in the order of the tank bottom 2, the water supply pump 107, the water-cooled medium heat exchanger 103, and the tank top 3. The hot water outlet 8 is connected to the hot water supply port 109 by a pipe. Since a pipe branched from the water pipe 108 is connected between the hot water outlet 8 and the hot water supply port 109, it is possible to mix water and hot water.

[0026] In the water-cooled medium heat exchanger 103, the flow paths of the refrigerant and water are in contact so that the refrigerant and water flow in opposite directions. However, it is not necessarily required to be a completely countercurrent flow, and a configuration in which the flow paths are orthogonal in part is also acceptable.

[0027] Near the tank bottom 2 inside the hot water storage tank 1, a baffle plate 20A is installed. This baffle plate 20A has a structure that covers the water supply port 4 with a structure having an umbrella shape with edges, that is, an outer peripheral end portion 27f and 27c whose ends protrude toward the wall surface of the tank bottom 2.

[0028] Example 1 of the heat storage type water supply apparatus of the present invention will be described with reference to FIGS. 2, 3, and 6.

[0029] As shown in Fig. 2, the above-described baffle plate 20A is installed in the middle of the lower inclined region 9a at a position away from the drain port 5 at the bottom of the tank 2, on the extension line of the inflow connection portion 12 that also serves as the connection portion of the water supply port 4 and the water delivery port 6, that is, on the extension line of the inflow direction of the water flowing through the water supply port 4, and is arranged parallel to the lower inclined region 9a.

[0030] Also, the ceiling portion of the baffle plate 20A is called the collision portion 26 because the water flow from the water supply direction of the water supply port 4 collides with it. Further, as described above, the baffle plate 20A has an umbrella-like structure with edges (outer peripheral end portions 27f and 27c), and the outer peripheral end portions (edges) 27f and 27c of the baffle plate 20A are arranged closer to the wall surface of the tank bottom 2 than the collision portion 26.

[0031] Also, in this embodiment, the side of the outer peripheral end portions 27f and 27c of the baffle plate 20A closer to the drain port 5 of the hot water storage tank 1 is defined as the proximity region 11, and the side farther from the drain port 5 of the hot water storage tank 1 is defined as the remote region 10. That is, the upper side of the inclined portion of the lower inclined region 9a at the bottom of the tank 2 is the remote region 10, and the lower side of the inclined portion of the lower inclined region 9a is the proximity region 11.

[0032] Also, in this embodiment, in the above-described remote region 10 and proximity region 11, the angles formed by the outer peripheral end portion 27f and the outer peripheral end portion 27c with the wall surface of the tank bottom 2 and the distances between the outer peripheral end portion 27f and the outer peripheral end portion 27c and the wall surface of the tank bottom 2 are different.

[0033] Specifically, regarding the outer angles (outer peripheral side angles 29f and 29c) of the baffle plate 20A formed by the extension lines of the outer peripheral end portions 27f and 27c of the baffle plate 20A and the wall surface of the tank bottom 2, the outer peripheral side angle 29c in the proximity region 11 is made larger than the outer peripheral side angle 29f in the remote region 10. Note that the outer peripheral side angle 29f in the remote region 10 is a right angle in this embodiment.

[0034] Also, regarding the shortest distances (outer peripheral side distances 30f and 30c) between the outer peripheral end portions 27f of the remote region 10 and the outer peripheral end portions 27c of the proximity region 11 of the baffle plate 20A and the wall surface of the tank bottom 2, the outer peripheral side distance 30c of the proximity region 11 is made larger than the outer peripheral side distance 30f of the remote region 10.

[0035] FIG. 3 shows a perspective view of the baffle plate 20A in the present embodiment.

[0036] As described above, in the present embodiment, since the outer peripheral side angles 29f and 29c are different in the remote region 10 and the proximity region 11 of the baffle plate 20A, an outer peripheral connection portion 28 for connecting the two is provided so that the respective outer peripheral end portions 27f and 27c are smoothly connected. That is, since the outer peripheral side angles 29f and 29c are different in the remote region 10 and the proximity region 11, the outer peripheral connection portion 28 is used to connect the respective outer peripheral end portions 27f and 27c so that there are no cuts.

[0037] Note that in the present embodiment, the area of the outer peripheral connection portion 28 is smaller than the outer peripheral end portions 27f and 27c corresponding to the proximity region 11 and the remote region 10, but a structure in which the area of the outer peripheral connection portion 28 is larger than the outer peripheral end portions 27f and 27c may also be acceptable.

[0038] Also, in the present embodiment, as shown in FIG. 2, the baffle plate 20A and the wall surface of the lower inclined region 9a of the tank bottom 2 are connected by a support column 21. This support column 21 serves to connect the flat plate portion that forms the same plane as the collision portion 26 of the baffle plate 20A and the wall surface of the lower inclined region 9a of the tank bottom 2, and is joined by welding.

[0039] To explain the difference between the present embodiment and the prior art, FIG. 4 shows an enlarged view of the tank bottom 2 with the prior art baffle plate 20 installed on the tank bottom 2.

[0040] The basic structure of the tank bottom 2 shown in Fig. 4 is the same as that of Fig. 2 in this embodiment, but the shape of the baffle plate 20 is different from that of the baffle plate 20A in this embodiment. Specifically, in the prior art shown in Fig. 4, the outer peripheral side angles 29f and 29c of the remote region 10 and the proximity region 11 are both right angles. In addition, the outer peripheral side distances 30f and 30c of the remote region 10 and the proximity region 11 are equal. The operation and effects of this embodiment will be described. At the start of use, tap water is supplied from the water pipe 108 to the hot water storage tank 1 to fill the inside of the hot water storage tank 1 with water. At this time, the water pressure is reduced to a predetermined pressure by passing through the pressure reducing valve 111. The cold water stored in the hot water storage tank 1 is subjected to a boiling operation at a time zone according to the user's setting. During the boiling operation, the water supply pump 107 operates, and cold water is supplied from the tank bottom 2 to the water-cooled medium heat exchanger 103. At the same time, power is applied to the compressor 102 to start compressing the refrigerant, and the CO2 refrigerant is flowed through the water-cooled medium heat exchanger 103, the expansion valve 104, and the evaporator 105 in this order. When a certain time has elapsed since the start of driving the compressor 102, the temperature of the compressed refrigerant reaches the temperature according to the setting, and the refrigerant and cold water exchange heat in the water-cooled medium heat exchanger 103, so that the cold water is heated to warm water at 65°C to 90°C. The heated warm water is returned to the tank top 3 from the warm water inlet 7 at the tank top 3. Regarding the refrigerant, the temperature drops to room temperature by giving heat to the cold water in the water-cooled medium heat exchanger 103, and becomes a temperature lower than the installation environment temperature of the heat source machine 101 by passing through the pressure reducing valve 111. Then, in the evaporator 105, the cold refrigerant exchanges heat with the air flow generated by the propeller fan 106, obtains heat from the outside air, and then returns to the compressor 102 again. By continuing the above operation, warm water begins to accumulate in the upper part of the hot water storage tank 1, and eventually the warm water region reaches the lower part of the hot water storage tank 1, and most of the inside of the hot water storage tank 1 is filled with warm water. When using warm water, the warm water is taken out from the hot water outlet 8 and sent to the hot water supply port 109. At this time, while sending warm water to the hot water supply port 109, tap water is supplied from the water supply port 4 installed at the tank bottom 2 of the hot water storage tank 1. When the temperature of the stored hot water is higher than the user's preference, it is mixed with cold water flowing through a pipe branched from the water supply pipe 108 and then delivered to the hot water outlet 109. When using the hot water in the hot water storage tank 1, since the pressure from the water supply pipe 108 is applied, hot water can be delivered to the hot water outlet 109 without the power of a pump or the like. However, in the case where the position of the hot water outlet 109 is significantly higher than that of the hot water storage tank 1, a separate pressurizing pump can be used.

[0041] The water stored in the hot water storage tank 1 can be discharged by opening the drain valve 110 as needed. Use cases include washing away dirt accumulated in the hot water storage tank 1 and ensuring domestic water in case of water cut-off due to disasters or the like. In these use cases, it is required to be able to extract all the stored water. For this reason, in this embodiment, the drain port 5 is provided at the apex of the conical structure at the bottom of the tank.

[0042] In the case where the bottom of the tank 2 is not conical, the intended effect can be obtained by providing the drain port 5 at the lowest position. Therefore, the drain port 5 does not necessarily have to be on the central axis of the bottom of the tank 2.

[0043] As described above, since the drain port 5 is installed at the apex of the conical structure, the inflow connection portion 12 that also serves as the connection portion of the water supply port 4 or the water delivery port 6 has to be installed in the lower inclined region 9a of the conical structure. Here, the lower inclined region 9a refers to the region configured such that water flows toward the drain port 5, and can be paraphrased as the non-apex portion at a position higher than the drain port 5. That is, it includes those obtained by processing a part of the slope of the lower inclined region 9a to be flat on a plane.

[0044] Fig. 5 shows the state of the flow of cold water when a conventional baffle plate 20 is installed at the bottom of the tank 2 in the operation of a conventional technology for sending hot water from the hot water storage tank 1 to the hot water outlet 109.

[0045] The cold water flowing in through the water pipe 108 flows into the hot water storage tank 1 from the water supply port 4, then reaches the collision part 26 of the baffle plate 20 and changes the flow direction. The flow of the incoming cold water flows along the wall surface of the baffle plate 20 as shown by the arrow in Fig. 5, and flows out into the hot water storage tank 1 through the gaps (outer peripheral side distances 30f and 30c) between the outer peripheral end parts 27f and 27c and the tank bottom 2.

[0046] At this time, both the remote region 10 and the proximity region 11 form a right angle with the tank bottom 2 (outer peripheral side angles 29f and 29c), and the widths (distances) of the outer peripheral side distances 30f and 30c are also the same. Therefore, the flows reaching the remote region 10 and the proximity region 11 pass through the outer peripheral side distances 30f and 30c at equal flow rates and flow velocities.

[0047] Also, since the flow collides perpendicularly with the wall surface of the lower inclined region 9a of the tank bottom 2, the incoming flow forms a flow that spreads along the wall surface of the tank bottom 2 while having a component in the direction of leaving the wall surface of the tank bottom 2 due to the reaction force from the tank bottom 2.

[0048] In such a flow state, in the region A (remote region 10) shown in Fig. 5, a flow with a high flow velocity having a component reflecting against the wall surface of the tank bottom 2 is generated, and this flow mixes the hot water at the top of the tank 3 and the cold water at the bottom of the tank 2. By mixing the hot water and the cold water, the amount of hot water below around 40°C, which cannot be used for hot water supply or bathing, increases. Since this hot water below around 40°C cannot be used for bathing or hot water supply, it is necessary to raise the temperature again by boiling it up with the heat source machine 101 or the like. However, when reheating the hot water, the coefficient of performance of the heat pump cycle 100 has the characteristic of decreasing.

[0049] As a result, due to the stirring in the hot water storage tank 1, ultimately the power consumption related to hot water supply increases.

[0050] On the other hand, Fig. 6 shows the flow state of the tank bottom 2 when the present embodiment is used.

[0051] As shown in FIG. 6, in this embodiment, the outer peripheral angle 29c and the outer peripheral distance 30c of the proximity region 11 are configured to be larger than the outer peripheral angle 29f and the outer peripheral distance 30f of the remote region 10.

[0052] When cold water flows in from the water supply port 4 in the structure of this embodiment, for the remote region 10, the flow passing through the wall surface of the baffle plate 20A changes its direction toward the tank bottom 2 side and collides with the wall surface of the tank bottom 2 almost perpendicularly. At this time, since the direction of the flow changes abruptly, a stagnant region is generated at the tank bottom 2 and the static pressure increases.

[0053] On the other hand, in the proximity region 11, since the outer peripheral angle 29c is large, the flow flowing out from the outer peripheral distance 30c of the outer peripheral end 27c collides obliquely with the wall surface of the tank bottom 2.

[0054] Therefore, the static pressure on the collision surface of the flow in the proximity region 11 is reduced compared to the remote region 10, and the flow velocity can be increased. In addition, since the outer peripheral distance 30c in the proximity region 11 is larger than the outer peripheral distance 30f of the remote region 10, the flow rate when the flow velocity is the same increases.

[0055] Due to the above two effects, the flow rate and flow velocity in the proximity region 11 can be increased, and the flow rate and flow velocity on the remote region 10 side can be reduced. As a result, the stirring caused by the upflow flowing out from the remote region 10 side, which occurred when the prior art was used, can be suppressed.

[0056] In this embodiment, an example in which the flow paths of the water supply port 4 and the water delivery port 6 are shared is shown, but the flow paths of the water delivery port 6 and the drain port 5 may be shared, or the water supply port 4 and the water delivery port 6 may be installed in different regions of the lower inclined region 9a.

Embodiment

[0057] Embodiment 2 of the heat storage type water supply device of the present invention will be described with reference to FIGS. 7, 8, and 9. This embodiment shown in the figure has a different baffle plate shape compared to Embodiment 1. Hereinafter, the description will focus on the differences from Embodiment 1. Fig. 7 shows an enlarged view of the bottom portion 2 of the tank in this embodiment. As shown in Fig. 7, the baffle plate 20B of this embodiment has a basic structure in which the outer periphery of a flat plate is bent at a right angle. The flat plate portion that becomes the collision portion 26 is perpendicular to the water supply direction (the upward direction in Fig. 7), and is arranged non-parallel to the wall surface of the lower inclined region 9a of the bottom portion 2 of the tank in the middle of the wall surface of the lower inclined region 9a. For this reason, the end portion of the support column 21 has a joint surface at the same angle as the inclination of the lower inclined region 9a.

[0058] When comparing the remote region 10 and the proximity region 11 of the baffle plate 20B in this embodiment, in this embodiment, regarding the outer peripheral side angles 29f and 29c of the remote region 10 and the proximity region 11, the outer peripheral side angle 29c of the proximity region 11 is 90 degrees or more, and the outer peripheral side angle 29f of the remote region 10 is 90 degrees or less. Also, regarding the outer peripheral side distances 30f and 30c of the remote region 10 and the proximity region 11, the outer peripheral side distance 30c of the proximity region 11 is configured to be larger than the outer peripheral side distance 30f of the remote region 10.

[0059] Furthermore, in this embodiment, the outer peripheral side distances 30f and 30c in the proximity region 11 and the remote region 10 are larger than the vertical lengths of the collision portion 26 and the outer peripheral end portions 27f and 27c. In other words, compared with the vertical height (length) of the edges (outer peripheral end portions 27f and 27c) of the baffle plate 20B, the gaps (outer peripheral side distances 30f and 30c) between the edges (outer peripheral end portions 27f and 27c) of the baffle plate 20B and the wall surface of the bottom portion 2 of the tank are configured to be large.

[0060] Fig. 8 shows a perspective view of the baffle plate 20B of this embodiment.

[0061] As shown in Fig. 8, the support column 21 that connects the baffle plate 20B and the bottom portion 2 of the tank in this embodiment has a structure in which the outer peripheral end portions 27f and 20c of the baffle plate 20B are extended (the baffle plate 20B and the support column 21 are an integral structure). However, a cut portion 22 without an edge is formed between the portion of the support column 21 and the portion of the edge (outer peripheral end portions 27f and 27c).

[0062] The operation and effects of the structure in this embodiment will be described with reference to FIG. 9.

[0063] As shown by the arrows in FIG. 9, after the flow that has flowed in from the water supply port 4 reaches the collision portion 26 of the baffle plate 20B, it flows along the wall surface of the baffle plate 20B and flows out from the gaps (outer peripheral side distances 30f and 30c) between the outer peripheral end portions 27f and 27c and the tank bottom 2. At this time, in the remote region 10, since the outer peripheral side angle 29f is smaller than 90 degrees, a part of the flow that has collided with the tank bottom 2 is returned in the direction of the water supply port 4. On the other hand, in the proximity region 11, since the outer peripheral side angle 29c is larger than 90 degrees, the flow that has passed through the wall surface of the baffle plate 20B is less likely to return in the direction of the water supply port 4.

[0064] In addition to this, since the interval of the outer peripheral side distance 30c in the proximity region 11 is larger than the outer peripheral side distance 30f in the remote region 10, the flow resistance in the proximity region 11 is reduced and the flow rate increases. Furthermore, if both the remote region 10 and the proximity region 11 have small outer peripheral side distances 30f and 30c, the flow path cross-sectional area of the gap (outer peripheral side distances 30f and 30c) through which the flow passes becomes small. Therefore, even with the same flow rate, the flow velocity increases, and the energy of the flow that stirs the inside of the hot water storage tank 1 is increased. On the other hand, in this embodiment, since the vertical distance between the collision portion 26 and the outer peripheral end portions 27f and 27c of the remote region 10 and the proximity region 11 is smaller than the outer peripheral side distances 30f and 30c, it becomes difficult for the flow velocity to increase, and the stirring inside the hot water storage tank 1 is further suppressed. Also, by bringing the support column 21 closer to the outer peripheral end portions 27f and 27c sides of the remote region 10 and the proximity region 11, the ratio of the area through which the flow spreading in the circumferential direction from the collision portion 26 can pass increases. Therefore, the area formed by the outer peripheral end portions 27f and 27c and the tank bottom 2 can be widely used. As a result, even in the case of the same flow rate, the flow velocity can be reduced, and thus the stirring is suppressed.

[0065] When manufacturing the baffle plate 20B of this embodiment, a method of bending the outer peripheral side of the disk at a right angle is assumed.

[0066] If the entire circumference is connected, wrinkles or the like may occur during bending, making production difficult. However, in this embodiment, a cutting portion 22 (see FIG. 8) is provided at a part of the outer peripheral ends 27f and 27c, so that the workability of bending is improved, and a flexible end shape according to requirements can be manufactured. Further, in this embodiment, the cutting portion 22 is provided adjacent to the support column 21, which has the effect of offsetting the influence that the flow easily flows out through the cutting portion 22 and the influence that the flow is blocked by the support column 21.

[0067] With the above structure, the same effects as in the first embodiment can of course be obtained, and the stirring in the hot water storage tank 1 can be further suppressed as compared with the first embodiment.

Embodiment

[0068] An embodiment 3 of the heat storage type water supply device of the present invention will be described with reference to FIGS. 10, 11 and 12. This embodiment shown in the figure is different from the second embodiment in that a dug-in portion 9A is provided in the lower inclined region 9a below the tank bottom 2, and the outer peripheral ends 27f and 27c of the baffle plate 20C are changed. Hereinafter, the differences from the second embodiment will be mainly described. FIG. 10 shows an enlarged view of the tank bottom 2 in this embodiment. As shown in FIG. 10, in this embodiment, a dug-in portion 9A having a horizontal bottom surface is provided in the lower inclined region 9a of the tank bottom 2. By providing this dug-in portion 9A, the water supply port 4 and the bottom surface of the dug-in portion 9A are vertically connected at the inflow connection portion 12. Moreover, the bottom surface diameter L1 of the dug-in portion 9A is configured to be smaller than the diameter L2 of the outer peripheral ends 27f and 27c of the baffle plate 20C. Furthermore, for the baffle plate 20C, the vertical length of the outer peripheral end 27c in the proximity region 11 is longer than the vertical length of the outer peripheral end 27f in the remote region 10. Also, as shown in FIG. 11, the baffle plate 20C of this embodiment is provided with corrugated uneven portions 23 on the entire circumference of the ends of the outer peripheral ends 27f and 27c excluding the support column 21 and the cutting portion 22.

[0069] The operation and effects of the structure in this embodiment will be described with reference to FIG. 12.

[0070] As described above, in this embodiment, a dug-in portion 9A having a horizontal bottom surface is provided in the lower inclined region 9a at the bottom of the tank 2. By providing this dug-in portion 9A, it becomes easier to join the water inlet 4 in the vertical direction, and variations in the inflow angle due to manufacturing errors and the like can be reduced. Therefore, it becomes easier to adjust the flow rate ratio of the flow flowing out from the gaps (outer peripheral side distances 30f and 30c) of the outer peripheral ends 27f and 27c of the remote region 10 and the proximity region 11.

[0071] Further, since the bottom surface diameter L1 of the dug-in portion 9A is made smaller than the diameters L2 of the outer peripheral ends 27f and 27c of the baffle plate 20C, the flow that reaches the outer peripheral ends 27f and 27c through the collision portion 26 is less likely to stay in the dug-in portion 9A. Furthermore, when the flow flowing in from the water inlet 4 passes through the collision portion 26 and flows out from the outer peripheral ends 27f and 27c, since the lengths of the edges (outer peripheral ends 27f and 27c) are different between the remote region 10 and the proximity region 11, compared with the case where the lengths of the edges (outer peripheral ends 27f and 27c) are the same, the flow flowing into the hot water storage tank 1 through the proximity region 11 sharply bends in the region near the bottom of the tank 2. As a result, the static pressure near the bottom of the tank 2 increases, making it difficult for the flow to pass through and reducing the flow rate. Using this operation, the flow rate ratio of the flow passing through the gaps (outer peripheral side distances 30f and 30c) between the remote region 10 and the proximity region 11 can be adjusted. Therefore, it is possible to adjust to a flow rate ratio suitable for the lower inclined region 9a having various angles.

[0072] In addition, in this embodiment, the outer peripheral end portions 27f and 27c are processed with the corrugated uneven portions 23. The flow passing through the end portion with the corrugated uneven portion 23 is affected by the deviation of the main flow in the vertical direction, so that a shear layer along the main flow is formed, and depending on the shape, longitudinal vortices (see FIG. 12) are induced. When the shear layer is formed, the diffusion of energy due to viscosity is promoted, so that the energy of the flow can be consumed. Further, with respect to the longitudinal vortices, they diffuse due to the influence of viscosity on the downstream side of the main flow and eventually interfere with each other. By the vortices interfering with each other, the longitudinal vortices collapse into a complex structure and consume the energy of the flow in a series of processes.

[0073] From the above, by providing the corrugated uneven portions 23 at the end portions of the outer peripheral end portions 27f and 27c, the energy of the flow is consumed on the downstream side where the gaps (outer peripheral side distances 30f and 30c) of the outer peripheral end portions 27f and 27c flow out, and the stirring in the hot water storage tank 1 can be suppressed.

[0074] With the above configuration, while reducing the influence of manufacturing variations, it is possible to finely adjust the flow rate ratio of the flow flowing out from the remote region 10 and the proximity region 11, so that the baffle plate 20C that can be easily adjusted to the intended flow rate ratio can be provided. In addition, by providing the corrugated uneven portions 23 at the end portions of the outer peripheral end portions 27f and 27c, the energy of the flow can be consumed to further suppress the stirring in the hot water storage tank 1.

[0075] Regarding the shape of the uneven portions 23 formed at the end portions of the outer peripheral end portions 27f and 27c, even if it is not corrugated, if the lengths of the outer peripheral end portions 27f and 27c are different in the circumferential direction (for example, V-shaped, etc.), the effect can be obtained. Further, the shape of the uneven portions 23 formed at the end portions of the outer peripheral end portions 27f and 27c may be periodic or aperiodic.

Example

[0076] Example 4 of the heat storage type water supply device of the present invention will be described with reference to FIGS. 13 and 14. In the present embodiment shown in the figure, instead of the uneven portions 23 formed at the end portions of the outer peripheral end portions 27f and 27c of the third embodiment, a plurality of surface cut-ups 25a and an outer peripheral cut-up 25b are provided. Hereinafter, the description will be centered on the differences from the third embodiment. Fig. 13 shows a perspective view of the baffle plate 20D of the present embodiment. As shown in the figure, in the present embodiment, a plurality (two locations in the present embodiment) of surface communication portions 24a penetrating the collision portion 26 are provided in the collision portion 26 of the baffle plate 20D, and a plurality (six locations in the present embodiment) of outer peripheral communication portions 24b penetrating the outer peripheral end portions 27f and 27c are provided in the outer peripheral end portions 27f and 27c of the baffle plate 20D, respectively. That is, the communication portion provided on the same surface as the collision portion 26 is defined as the surface communication portion 24a, and the communication portion provided on the same surface as the outer peripheral end portions 27f and 27c is defined as the outer peripheral communication portion 24b.

[0077] Further, in the surface communication portion 24a, a structure (surface cut-up 25a) is provided in which a cut is made in the plate-like material before processing in the direction perpendicular to the collision portion 26 side and the cut-up is made on the water supply port 4 side, and in the outer peripheral communication portion 24b, a structure (outer peripheral cut-up 25b) is provided in which a cut is made in the plate-like material in the direction perpendicular to the collision portion 26 side and the cut-up is made on the water supply port 4 side. The operation and effects of the structure of the present embodiment will be described with reference to FIGS. 13 and 14. In the present embodiment, since the effects are different between the outer peripheral communication portion 24b and the surface communication portion 24a, first, the surface communication portion 24a will be described. As shown in FIGS. 13 and 14, the flow that reaches the collision portion 26 flows toward the entire circumference of the wall surface of the baffle plate 20D. At this time, due to the surface cut-up 25a connected to the surface communication portion 24a, a flow upward and a flow downward of the baffle plate 20D are generated. A part of this flow escapes upward from the surface of the baffle plate 20D through the surface communication portion 24a, thereby reducing the flow rate of the flow flowing out from the gaps (outer peripheral side distances 30f and 30c) between the outer peripheral end portions 27f and 27c and the lower inclined region 9a of the tank bottom 2, and suppressing the stirring energy by reducing the flow velocity. Although it is also assumed that agitation may occur due to the flow that escapes above the baffle plate 20D, by reducing the area of the surface communication portion 24a, the influence can be minimized. In addition, by directing the surface uplifting 25a toward the water supply port 4 side and further providing it between the cutting portion 22 adjacent to the support column 21 and the collision portion 26, the flow passing through the cutting portion 22 can be blocked. As a result, the high-speed region generated when the flow passes through the cutting portion 22 can be reduced. Next, the effect of the outer peripheral communication portion 24b will be described with reference to FIG. 14. As shown in FIG. 14, the flow that reaches the collision portion 26 flows along the wall surface of the baffle plate 20D and then changes its direction near the outer peripheral end portions 27f and 27c. After that, due to the outer peripheral uplifting 25b, the flow passing through the outer peripheral end portions 27f and 27c and the flow passing through the gaps (outer peripheral side distances 30f and 30c) between the tank bottom 2 and the outer peripheral end portions 27f and 27c are separated. Thereby, the flow rate of the flow passing through the gaps (outer peripheral side distances 30f and 30c) between the tank bottom 2 and the outer peripheral end portions 27f and 27c can be reduced, and the agitation energy can be suppressed.

[0078] As described above, by causing the flow that has collided with the baffle plate 20D to flow out not only from the gaps (outer peripheral side distances 30f and 30c) between the outer peripheral end portions 27f and 27c and the tank bottom 2, but also from the upper part of the baffle plate 20D and the outer peripheral end portions 27f and 27c, the area through which the flow passes can be increased, and as a result, the flow velocity flowing into the hot water storage tank 1 can be reduced.

[0079] Note that the surface uplifting 25a and the outer peripheral uplifting 25b can be selected in various combinations according to the angle of the lower inclined region 9a and the flow rate conditions. For example, it is also possible to provide the outer peripheral communication portion 24b only at the outer peripheral end portion 27c of the proximity region 11.

Example

[0080] Example 5 of the heat storage type water supply apparatus of the present invention will be described with reference to FIG. 15.

[0081] In this example shown in the figure, the baffle plate 20B described in Example 2 is installed at the tank top 3. Fig. 15 shows an enlarged view of the tank top 3 in this embodiment. As shown in this figure, the tank top 3 is provided with a hot water outlet 8 and a hot water inlet 7, and the wall surface of the tank top 3 has a conical structure with the hot water outlet 8 as the apex. For this reason, the hot water inlet 7 is provided in the middle of the upper inclined region 9b of the tank top 3. The baffle plate 20B of this embodiment is installed facing the inflow connection portion 12 of the hot water inlet 7. As a result, a gap (outer peripheral side distance 30c) close to the hot water outlet 8 and a gap (outer peripheral side distance 30f) far from the hot water outlet 8 are generated in the storage tank 1. Similar to the tank bottom 2, the region closer to the hot water outlet 8 is the proximity region 11, and the region farther away is the remote region 10. The distances between the outer peripheral ends 27f and 27c and the tank bottom 2, that is, the outer peripheral side distances 30f and 30c, are such that the proximity region 11 is larger than the remote region 10. Also, regarding the outer peripheral side angles 29f and 29c formed by the extension lines of the outer peripheral ends 27f and 27c and the tank bottom 2, that is, the angles outside the baffle plate 20B, the proximity region 11 is larger than the remote region 10.

[0082] Next, the operation of this embodiment will be described. Inside the storage tank 1, due to the difference in water density, the upper part is maintained at a hot water temperature distribution and the bottom part is maintained at a cold water temperature distribution. When the user uses hot water, in order to take out the hot water from the hot water outlet 8 and use up the heat stored in the storage tank 1 without waste, it is better for the hot water outlet 8 to be at the highest position. For this reason, by installing the hot water outlet 8 at the apex of the tank top 3 as in this embodiment, hot water can be used efficiently.

[0083] When storing hot water in the storage tank 1, cold water is taken out from the tank bottom 2, boiled up by the heat source machine 101, and returned to the storage tank 1 as hot water through the hot water inlet 7. At this time, when a downward flow flows in from the tank top 3, a flow toward the tank bottom 2 side is generated. By the baffle plate 20B obstructing this flow, the mixing of hot water and cold water is suppressed. Also, since the structure of Embodiment 2 is used as the baffle plate 20B, the flow rate of the flow toward the proximity region 11 is larger than that of the remote region 10, and the flow toward the lower part of the storage tank 1 on the remote region 10 side is suppressed.

[0084] Due to the above actions, the hot water temperature at the top 3 of the tank is maintained at a high temperature, and the hot water can maintain the temperature required for hot water supply and hot water supply.

[0085] In addition, Examples 1-5 can be used in combination with each other. For example, the same baffle plates 20A, 20B, 20C, and 20D can be used at the bottom 2 and the top 3 of the tank, or different baffle plates 20A, 20B, 20C, and 20D can be combined.

[0086] In addition, the present invention is not limited to the above-described embodiments, and various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Also, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Also, it is possible to add, delete, or replace other configurations for a part of the configuration of each embodiment.

Explanation of Reference Numerals

[0087] 1... hot water storage tank, 2... tank bottom, 3... tank top, 4... water inlet, 5... drain outlet, 6... water supply port, 7... hot water inlet, 8... hot water outlet, 9A... dug-in part, 9a... lower inclined region, 9b... upper inclined region, 10... remote region, 11... proximity region, 12... inflow connection part, 20, 20A, 20B, 20C, 20D... baffle plates, 21... support column, 22... cut-off part, 23... uneven part, 24... communication part, 24a... surface communication part, 24b... outer periphery communication part, 25a... surface cut-up, 25b... outer periphery cut-up, 26... collision part, 27f, 27c... outer periphery end part, 28... outer periphery connection part, 29f, 29c... outer periphery side angle, 30f, 30c... outer periphery side distance, 100... heat pump cycle, 101... heat source machine, 102... compressor, 103... water-cooled refrigerant heat exchanger, 104... expansion valve, 105... evaporator, 106: propeller fan, 107... water supply pump, 108... water pipe, 109... hot water supply port, 110... drain valve, 111... pressure reducing valve.

Claims

1. Comprising a tank and a heat source machine connected to the tank, the bottom of the tank is connected to the inflow side of the heat source machine, and the top of the tank is connected to the outflow side of the heat source machine. The tank is provided with a water inlet for allowing water to flow in at its bottom, a drain outlet for allowing water to flow out, a hot water inlet for allowing hot water to flow in at its top, and a hot water outlet for allowing hot water to flow out. Moreover, it has a lower inclined region rising outward from the drain outlet and an upper inclined region descending outward from the hot water outlet. The water inlet is arranged in the lower inclined region, and the hot water inlet is arranged in the upper inclined region. A heat storage type water heater, wherein a baffle plate is installed in the lower inclined region at a position facing the inflow direction of water from the water inlet and / or in the upper inclined region at a position facing the inflow direction of hot water from the hot water inlet. The baffle plate has an outer peripheral end portion whose end protrudes toward the bottom wall surface and / or the top wall surface of the tank. The angle outside the baffle plate formed by the extension line of the outer peripheral end portion of the baffle plate and the bottom wall surface and / or the top wall surface of the tank is defined as the outer peripheral side angle. When the side of the baffle plate close to the drain outlet or the hot water outlet is defined as the proximity region, and the side far from the drain outlet or the hot water outlet is defined as the remote region, the outer peripheral side angle of the proximity region is configured to be larger than the outer peripheral side angle of the remote region. The baffle plate is characterized in that it is arranged on the extension line of the inflow direction of the water flowing through the water inlet and is parallel to the lower inclined region.

2. A heat storage type water heater according to Claim 1, wherein when the distance between the outer peripheral end portion of the remote region of the baffle plate and the outer peripheral end portion of the proximity region and the bottom wall surface of the tank is defined as the outer peripheral side distance, the outer peripheral side distance of the proximity region is configured to be larger than the outer peripheral side distance of the remote region.

3. A heat storage type water heater according to Claim 1 or 2, wherein the baffle plate and the wall surface of the lower inclined region at the bottom of the tank are connected by a support column. The support column is characterized in that it constitutes a flat plate portion on the same surface as the collision portion of the baffle plate where the water flow from the water supply direction of the water inlet collides, and is connected to the wall surface of the lower inclined region at the bottom of the tank.

4. It comprises a tank and a heat source machine connected to the tank, with the bottom of the tank connected to the inflow side of the heat source machine and the top of the tank connected to the outflow side of the heat source machine. The tank is provided with a water inlet for allowing water to flow into its bottom, a drain outlet for allowing water to flow out, a hot water inlet for allowing hot water to flow into its top, and a hot water outlet for allowing hot water to flow out. Moreover, it has a lower inclined region rising outward from the drain outlet and an upper inclined region descending outward from the hot water outlet. The water inlet is arranged in the lower inclined region, and the hot water inlet is arranged in the upper inclined region. It is a heat storage type water heater in which a baffle plate is installed in the lower inclined region at a position facing the inflow direction of water from the water inlet and / or in the upper inclined region at a position facing the inflow direction of hot water from the hot water inlet. The baffle plate has an outer peripheral end portion with an end protruding toward the bottom wall surface and / or the top wall surface of the tank. The angle outside the baffle plate formed by the extension line of the outer peripheral end portion of the baffle plate and the bottom wall surface and / or the top wall surface of the tank is defined as the outer peripheral side angle. When the side of the baffle plate close to the drain outlet or the hot water outlet is defined as the proximity region and the side far from the drain outlet or the hot water outlet is defined as the remote region, the outer peripheral side angle of the proximity region is configured to be larger than the outer peripheral side angle of the remote region. The baffle plate and the wall surface of the lower inclined region at the bottom of the tank are connected by a support column. The support column and the baffle plate are of an integral structure, and a cut portion is formed between the support column and the outer peripheral end portion of the baffle plate. This is a characteristic of the heat storage type water heater.

5. The heat storage type water heater according to claim 4, when the distance between the outer peripheral end portion of the remote region of the baffle plate and the outer peripheral end portion of the proximity region and the bottom wall surface of the tank is defined as the outer peripheral side distance, the outer peripheral side distance of the proximity region is configured to be larger than the outer peripheral side distance of the remote region. This is a characteristic of the heat storage type water heater.

6. The heat storage type water heater according to claim 4 or 5, wherein the outer peripheral side angle of the proximity region of the baffle plate is 90 degrees or more, and the outer peripheral side angle of the remote region of the baffle plate is 90 degrees or less. This is a characteristic of the heat storage type water heater.

7. It comprises a tank and a heat source machine connected to the tank, wherein the bottom of the tank is connected to the inflow side of the heat source machine, and the top of the tank is connected to the outflow side of the heat source machine. The tank is provided with a water inlet for allowing water to flow into its bottom, a drain outlet for allowing water to flow out, a hot water inlet for allowing hot water to flow into its top, and a hot water outlet for allowing hot water to flow out. Moreover, it has a lower inclined region rising outward from the drain outlet and an upper inclined region descending outward from the hot water outlet. The water inlet is arranged in the lower inclined region, and the hot water inlet is arranged in the upper inclined region. It is a heat storage type water heater in which a baffle plate is installed in the lower inclined region at a position facing the inflow direction of water from the water inlet and / or in the upper inclined region at a position facing the inflow direction of hot water from the hot water inlet. The baffle plate has an outer peripheral end portion whose end projects toward the bottom wall surface and / or the top wall surface of the tank. The angle outside the baffle plate formed by the extension line of the outer peripheral end portion of the baffle plate and the bottom wall surface and / or the top wall surface of the tank is defined as the outer peripheral side angle. When the side of the baffle plate close to the drain outlet or the hot water outlet is defined as the proximity region, and the side far from the drain outlet or the hot water outlet is defined as the remote region, the outer peripheral side angle of the proximity region is configured to be larger than the outer peripheral side angle of the remote region. A dug-in portion with a horizontal bottom surface is provided in the lower inclined region at the bottom of the tank, and the bottom surface diameter of the dug-in portion is configured to be smaller than the diameter of the outer peripheral end portion of the baffle plate. This is a characteristic of the heat storage type water heater.

8. The heat storage type water heater according to Claim 7, When the distance between the outer peripheral end portion of the remote region of the baffle plate, the outer peripheral end portion of the proximity region, and the bottom wall surface of the tank is defined as the outer peripheral side distance, the outer peripheral side distance of the proximity region is configured to be larger than the outer peripheral side distance of the remote region. This is a characteristic of the heat storage type water heater.

9. It comprises a tank and a heat source machine connected to the tank, wherein the bottom of the tank is connected to the inflow side of the heat source machine, and the top of the tank is connected to the outflow side of the heat source machine. The tank is provided with a water inlet for allowing water to flow into its bottom, a drain outlet for allowing water to flow out, a hot water inlet for allowing hot water to flow into its top, and a hot water outlet for allowing hot water to flow out. and has a lower inclined region that rises outward from the drain outlet and / or an upper inclined region that descends outward from the hot water outlet, the water supply port is disposed in the lower inclined region and / or the hot water inlet is disposed in the upper inclined region, a heat storage type water heater in which a baffle plate is installed in the lower inclined region at a position facing the inflow direction of water from the water supply port and / or in the upper inclined region at a position facing the inflow direction of hot water from the hot water inlet, the baffle plate has an outer peripheral end portion whose end portion protrudes toward the bottom wall surface and / or the top wall surface of the tank, and an angle outside the baffle plate formed by the extension line of the outer peripheral end portion of the baffle plate and the bottom wall surface and / or the top wall surface of the tank is defined as an outer peripheral side angle, and when the side of the baffle plate close to the drain outlet or the hot water outlet is defined as a proximity region and the side far from the drain outlet or the hot water outlet is defined as a remote region, the outer peripheral side angle of the proximity region is configured to be larger than the outer peripheral side angle of the remote region, a heat storage type water heater characterized in that a vertical direction length of the outer peripheral end portion in the proximity region of the baffle plate is longer than a vertical direction length of the outer peripheral end portion in the remote region.

10. A heat storage type water heater according to claim 9, a heat storage type water heater characterized in that when a distance between the outer peripheral end portion of the remote region of the baffle plate and the outer peripheral end portion of the proximity region and the bottom wall surface of the tank is defined as an outer peripheral side distance, the outer peripheral side distance of the proximity region is configured to be larger than the outer peripheral side distance of the remote region.

11. comprising a tank and a heat source machine connected to the tank, the bottom of the tank is connected to the inflow side of the heat source machine, and the top of the tank is connected to the outflow side of the heat source machine, the tank is provided with a water supply port for allowing water to flow in at the bottom, a drain outlet for allowing water to flow out, a hot water inlet for allowing hot water to flow in at the top, and a hot water outlet for allowing hot water to flow out, and has a lower inclined region that rises outward from the drain outlet and / or an upper inclined region that descends outward from the hot water outlet, the water supply port is disposed in the lower inclined region and / or the hot water inlet is disposed in the upper inclined region, a heat storage type water heater in which a baffle plate is installed in the lower inclined region at a position facing the inflow direction of water from the water supply port and / or in the upper inclined region at a position facing the inflow direction of hot water from the hot water inlet, The baffle plate has an outer peripheral end portion whose end portion protrudes toward the bottom wall surface and / or the top wall surface of the tank. The angle formed between the extension line of the outer peripheral end portion of the baffle plate and the bottom wall surface and / or the top wall surface of the tank is defined as the outer peripheral side angle. When the side of the baffle plate close to the drain port or the hot water outlet is defined as the proximity region and the side far from the drain port or the hot water outlet is defined as the remote region, the outer peripheral side angle of the proximity region is configured to be larger than the outer peripheral side angle of the remote region. The heat storage type water heater is characterized in that uneven portions are formed at the ends of the outer peripheral end portions of the proximity region and / or the remote region of the baffle plate.

12. The heat storage type water heater according to claim 11, When the distances between the outer peripheral end portions of the remote region of the baffle plate and the outer peripheral end portions of the proximity region and the bottom wall surface of the tank are defined as the outer peripheral side distances, the outer peripheral side distance of the proximity region is configured to be larger than the outer peripheral side distance of the remote region. The heat storage type water heater is characterized by this.

13. It consists of a tank and a heat source machine connected to the tank. The bottom of the tank is connected to the inflow side of the heat source machine, and the top of the tank is connected to the outflow side of the heat source machine. The tank is provided with a water inlet for allowing water to flow in at its bottom, a drain port for allowing water to flow out, a hot water inlet for allowing hot water to flow in at its top, and a hot water outlet for allowing hot water to flow out. And it has a lower inclined region rising outward from the drain port and / or an upper inclined region descending outward from the hot water outlet. The water inlet is arranged in the lower inclined region and / or the hot water inlet is arranged in the upper inclined region. A heat storage type water heater in which a baffle plate is installed in the lower inclined region at a position facing the inflow direction of water from the water inlet and / or in the upper inclined region at a position facing the inflow direction of hot water from the hot water inlet. The baffle plate has an outer peripheral end portion whose end portion protrudes toward the bottom wall surface and / or the top wall surface of the tank. The angle formed between the extension line of the outer peripheral end portion of the baffle plate and the bottom wall surface and / or the top wall surface of the tank is defined as the outer peripheral side angle. When the side of the baffle plate close to the drain port or the hot water outlet is defined as the proximity region and the side far from the drain port or the hot water outlet is defined as the remote region, the outer peripheral side angle of the proximity region is configured to be larger than the outer peripheral side angle of the remote region. A plurality of surface communication portions penetrating the collision portion are provided in the collision portion of the baffle plate, and a plurality of outer peripheral communication portions penetrating the outer peripheral end portion are provided in the outer peripheral end portion of the baffle plate, respectively. At the same time, In the surface communication portion, a cut is made in the plate-shaped material before processing in the direction of the collision portion and its perpendicular direction, and a surface cut-up raised toward the water supply port side is provided. In the outer peripheral communication portion, a cut is made in the plate-shaped material in the direction of the collision portion and its perpendicular direction, and an outer peripheral cut-up raised toward the water supply port side is provided. A heat storage type water heater characterized by this.

14. The heat storage type water heater according to claim 13, When the distance between the outer peripheral end portion of the remote region and the outer peripheral end portion of the proximity region of the baffle plate and the bottom wall surface of the tank is defined as the outer peripheral side distance, the outer peripheral side distance of the proximity region is larger than the outer peripheral side distance of the remote region. A heat storage type water heater characterized by this.

15. A heat source machine including at least a compression means for compressing a refrigerant, a heating means for heating water sent by the refrigerant compressed by the compression means, an expansion means for expanding the refrigerant, and an evaporation means for heating the refrigerant is connected to a tank of a heat storage type water heater. At the same time, an annular flow path connecting the compression means, the heating means, the expansion means, and the evaporation means in an annular shape is configured, and the refrigerant is sealed in the annular flow path. A stored hot water type heat pump water heater, The heat storage type water heater is a stored hot water type heat pump water heater characterized by being the heat storage type water heater according to any one of claims 1 to 14.

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