JP3616147B2 - Hot water circulation treatment equipment - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a hot water circulation processing device for purifying and heating while circulating hot water in a bathtub, and more particularly to a hot water circulation processing device having a switching valve capable of switching a flow path of hot water.
[0002]
[Prior art]
Conventionally, in this type of hot water circulation processing apparatus, as shown in FIG. 14, a circulation pump 51, a septic tank 52, a switching valve 53, a sterilization device 54, and the like are accommodated in a main body case 50. The switching valve 53 is provided in the lower part of the main body case 50 and is used for switching the flow path of the hot water during the hot water circulation and during the reverse cleaning of the septic tank 52. On the lower surface of the switching valve 53, a hot water circulation port 55 through which hot water flows or drains during hot water circulation or when the septic tank is backwashed is provided. To 54.
[0003]
During the hot water circulation, the hot water in the bathtub is pumped up by the circulation pump 51 and flows into the sterilizer 54, the switching valve 53, and the septic tank 52. Waste from the human body contained in the circulated warm water is sterilized when passing through the sterilizer 54 and removed when passing through the septic tank 52. Thereafter, the purified hot water is returned to the bathtub.
[0004]
Moreover, by operating the switching valve 53, the circulation direction of the hot water is switched to the reverse direction during the hot water circulation. That is, when cleaning the septic tank 52, the hot water in the bathtub is pumped up by the circulation pump and flows into the septic tank 52 from the opposite direction to that during the hot water circulation. And the dirt adhering to the surface of a purification stone is removed by stirring the purification stone etc. which were provided in the purification tank 52 with the flow pressure of the warm water. Thereafter, the hot water is drained out of the bathtub along with the dirt.
[0005]
[Problems to be solved by the invention]
However, in the conventional hot water circulation processing apparatus, since the hot water circulation pipe 56 is connected to the lower part of the switching valve 53, a space for connecting the hot water circulation pipe 56 to the hot water circulation port 55 is provided near the lower part of the switching valve 53. Must be secured. Therefore, there is a problem that the vertical dimension of the main body case 50 becomes long.
[0006]
Therefore, it is conceivable to provide a hot water circulation port 55 on the side of the switching valve 53. However, if the switching valve 53 is arranged in a direction in which the axis of the hot water flow port 55 and the side wall of the main body case 50 are orthogonal to each other, the hot water flow pipe for the hot water flow port 55 is interposed between the hot water flow port 55 and the side wall of the main body case 50. 56 connection spaces must be reserved. Therefore, the dimension of the main body case 50 in the width direction becomes long.
[0007]
Moreover, since it is necessary to ensure the arrangement space of the hot water circulation port 55 on the lower surface of the switching valve 53, the bottom area becomes large. Therefore, there is a problem that the switching valve 53 is enlarged and the main body case 6 that accommodates the switching valve 53 is also enlarged.
[0008]
This invention was made paying attention to the problem which exists in the said prior art, The objective is to provide the warm water circulation processing apparatus which can miniaturize the whole main body case.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, the invention of claim 1 is provided in the main body case,During hot water circulationHot waterTopPass through the port,beneathA septic tank that drains and purifies through a port;A heat sterilization tank that is provided in the main body case and heat-sterilized by flowing the hot water flowing out of the septic tank through the hot water circulation pipe;While being provided in the body case,Inflow port andA plurality of hot water circulation ports are provided, and during the hot water circulation, the hot water in the bathtub is supplied to the septic tank via one of the hot water circulation ports.TopAs well as the septic tankReverseBathtub when cleaningInsideHot water through one of the hot water distribution portsbeneathThe hot water flow path can be switched so that the hot water in the septic tank is led to the port and flows in the direction opposite to the flow direction during circulation.Five sidesIn the hot water circulation processing device provided with a switching valve,An inflow port is provided above the five-way selector valve so that hot water in the bathtub flows through the hot water circulation pipe during hot water circulation or when the septic tank is backwashed. Inflow or drainage of warm water through the distribution pipeSaidFive sidesOn the side of the selector valveIs warmWater distribution ports are provided at approximately equal intervals,The five-way switching valve is disposed between the septic tank and the heat sterilization tank and at the top of the main body case,The gist is that the axis of the hot water distribution port is arranged so as to intersect the wall surface of the main body case in an oblique direction.
[0011]
[Action]
The invention of claim 1 configured as described above has a hot water circulation port.Five sidesSince it is provided at equal intervals on the side of the switching valve, the vertical dimension of the main body case is shortened. In addition, since the axis of the hot water circulation port obliquely intersects the wall surface of the main body case, a space for connecting the hot water circulation pipe to the hot water circulation port is ensured between the hot water circulation port and the wall surface of the main body case. Therefore,Five sidesThe switching valve and the wall surface of the main body case can be arranged close to each other, and the width of the main body case is shortened. Accordingly, the entire main body case is reduced in size.
[0012]
In addition, five sidesSwitching valve isBetween the septic tank and the heat sterilization tank andBecause it is arranged at the top of the body case,Five sidesHot water flow below the switching valveThroughHot water flow to the portThroughThe connection space of the pipe is widened.
[0013]
【Example】
Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. In addition, let FIG. 1 be the front of a warm water circulation processing apparatus.
[0014]
As shown in FIGS. 1 and 13, the hot water circulation processing device 1 is installed in the vicinity of a domestic bathtub 2. A base 3 is provided in the lower part of the hot water circulation treatment apparatus 1, and a water absorption pipe 4 is passed through an upper side wall of the base 3 through a water absorption port (not shown). Further, a water discharge pipe 5 is passed through an upper side wall of the base 3 through a water discharge port (not shown). The hot water in the bathtub 2 is absorbed into the hot water circulation processing device 1 through the water absorption pipe 4, and the hot water from the hot water circulation processing device 1 is discharged into the bathtub 2 through the water discharge pipe 5.
[0015]
As shown in FIG. 1, a main body case 6 is detachably mounted on the base 3. A circulation pump 7, a five-way switching valve 8, a purification tank 9 and a heat sterilization tank 10 are provided in the main body case 6. First, the connection structure of the devices 7 to 10 will be described. The other end of the water absorption pipe 4 is connected to the inlet 7 a of the circulation pump 7. The outflow port 7b of the circulation pump 7 is connected to the inflow port Pe of the five-way switching valve 8 through the flow path pipe 11a. A flow sensor 23 is provided on the flow path pipe 11a. The flow rate of the hot water flowing through the flow path pipe 11a is detected by the flow rate sensor 23, and a control circuit (not shown) stops the operation of the hot water circulation processing device 1 if the flow rate is less than a predetermined amount.
[0016]
As shown in FIGS. 1 to 3, the five-way switching valve 8 is provided with first to fourth ports P <b> 1 to P <b> 4 as hot water circulation ports. The first port P1 of the five-way switching valve 8 is connected to an upper port 9a as a primary side port of the septic tank 9 through a flow path pipe 11b as a hot water flow path pipe. A lower port 9b as a secondary side port of the septic tank 9 is connected to the inlets 10a and 10b of the heat sterilization tank 10 through a bifurcated channel pipe 11c. Channel tube 11cOne end of a drain pipe 13 is connected to the right end of the base plate 3, and the other end is supported through the front right side wall of the base 3. A nipple 14 is detachably connected to the drain pipe 13.
[0017]
The outlet 10c of the heat sterilization tank 10 is connected to the third port P3 of the five-way switching valve 8 through a flow path pipe 11d as a hot water circulation pipe. The second port P2 of the five-way switching valve 8 is connected to the other end of the water discharge pipe 5 as a hot water circulation pipe. Further, one end of a drain pipe 12 (only FIG. 2 and FIG. 3 are shown) as a hot water circulation pipe is connected to the fourth port P4 of the five-way switching valve 8. The other end of the drain pipe 12 extends to a drainage channel (not shown) through the upper surface and the side wall of the base 3.
[0018]
A UV lamp and a ceramic heater (not shown) are accommodated in the heat sterilization tank 10. The hot water is sterilized by a UV lamp and heated by a ceramic heater.
[0019]
Next, the assembly structure of the circulation pump 7, the five-way switching valve 8, the septic tank 9, and the heat sterilization tank 10 will be described.
As shown in FIGS. 1 and 2, a housing groove 3a extending in the longitudinal direction is formed in the upper side wall of the base 3, and the flow path pipe 11c is housed in the housing groove 3a. Near the center of the upper side wall of the base 3, a pump support plate 15 is formed so as to protrude upward. The circulation pump 7 is attached to the pump support plate 15 so as to be tightened by a belt 16b inserted through the pump support plate 15 via a sponge 16a.
[0020]
A pair of connecting plates 17 are formed on the front and rear end edges of the upper side wall of the base 3 so as to protrude upward. A fixed lower end of a switching valve support frame 18 (not shown in FIG. 1) is fixed to each connecting plate 17. The switching valve support frame 18 is composed of a first support plate 18 a and a second support plate 18 b having side-face inverted L shapes, and both plates 18 a and 18 b are connected to each other by screws 19. The five-way switching valve 8 is fastened and fixed to the upper side wall of the first support plate 18a by screws 20 so as to be detachable from each other. The five-way switching valve 8 is positioned above the main body case 6 and near the center of the left-right width of the main body case 6.
[0021]
The body case 6 includes a front plate 6a, a back plate 6b, and an upper frame 6c. The front plate 6a, the back plate 6b, and the upper frame 6c are detachably attached. The upper frame 6c is attached to the upper ends of the front plate 6a and the back plate 6b. A step portion 6d is formed from the vicinity of the center of the upper frame 6c to the right end, and the upper end of the heat sterilization tank 10 is detachably screwed to the step portion 6d. An opening 21 is formed on the side and bottom of the step 6d to communicate the main body case 6 with the outside. The upper frame 6c is covered with a lid 22 so as to cover the opening 21, and the lid 22 is detachably screwed to the upper frame 6c.
[0022]
An insertion port 25 is formed at the left end of the upper frame 6c, and a step portion 25a is formed in the insertion port 25 along the circumferential direction. The septic tank 9 is inserted into the insertion port 25. An engaging step portion 26 extending outward is formed on the outer periphery of the upper end of the septic tank 9. And the engagement step part 26 of the septic tank 9 and the step part 25a of the insertion port 25 are engaged with each other, and the inner peripheral surface of the insertion port 25 and the outer peripheral surface of the septic tank 9 are fixed by an adhesive. .
[0023]
Next, the five-way switching valve 8 which is a characteristic part of the present embodiment will be described in detail. As shown in FIGS. 3 and 4, the five-way switching valve 8 includes a casing 27. The casing 27 is formed in a substantially box shape, and its lower surface is opened. A mounting hole 24 is formed in the upper surface of the casing 27, and the inflow port Pe is fitted and fixed in the mounting hole 24. The tip of the inflow port Pe protrudes upward. In addition, the four side surfaces of the casing 27 are respectivelyTakeAttached holes 28 are formed, and the ports P1 to P4 are fitted and fixed in the mounting holes 28, respectively. The front ends of the ports P1 to P4 protrude outward.
[0024]
The first and second ports P1, P3 are disposed opposite to each other at 180 °, and both ports P1, P3 are located on the same axis L1. The third and fourth ports P2 and P4 are arranged opposite to each other at 180 °, and both ports P2 and P4 are located on the same axis L2. The axis L1 of the first and second ports P1, P3 and the axis L2 of the third and fourth ports P2, P4 are orthogonal to each other. Further, the angle θ formed by the axes L1 and L2 of the first to fourth ports P1 to P4 with respect to the front plate 6a and the back plate 6b of the main body case 6 is about 45 °.
[0025]
A lid 29 is fastened and fixed to the lower opening 27a in the casing 27 by a bolt (not shown). A flange 29 a is projected outward from the lower end of the lid 29. An embedded bolt 31 planted in an actuator 30 made of a motor is inserted into the flange 29a, and a nut 32 is screwed into the implanted bolt 31. The casing 27 and the actuator 30 are fastened and fixed by tightening the nut 32. A drive shaft 33 extending from the actuator 30 is supported on the lid 29 so as to be reciprocally rotatable, and the tip of the drive shaft 33 extends into the case 27.
[0026]
Although not shown, the actuator 30 is electrically connected to the control circuit. Further, each operation button of the operation panel S provided on the front surface of the main body case 6 shown in FIG. 13 is connected to the input side of the control circuit. The actuator 30 is driven and controlled by operating the operation button.
[0027]
As shown in FIGS. 4 and 5, a guide ring 34 is fixed to the inner ends of the flow holes 35 of the ports P <b> 1 to P <b> 4 provided in the casing 27. The inner side surface of each guide ring 34 is curved in a concave section so as to correspond to the outer side surface of a valve body 36 described later. And the warm water which flowed in in the casing 27 from the inflow port Pe flows in / out from each port P1-P4 via each circulation hole 35. As shown in FIG.
[0028]
A valve body 36 is accommodated in the casing 27 inside the guide ring 34. The outer surface of the valve body 36 is formed in a convex shape and is engaged with the inner surface of the guide ring 34. By this engagement, the valve body 36 is supported so as to be reciprocally rotatable with respect to the guide ring 34.
[0029]
A warm water inlet 37 is formed at the center of the upper surface of the valve body 36 so as to protrude upward. The hot water inlet 37 is engaged with the base end of the inflow port Pe so as to be reciprocally rotatable. The tip of the drive shaft 33 is fitted in the lower center of the valve body 36. And the valve body 36 rotates integrally with the reciprocating rotation of the drive shaft 33.
[0030]
As shown in FIGS. 5 to 8, a partition wall 38 having a C-shaped cross section is formed in the center of the valve body 36. A plurality of radially extending partition walls 39 are formed on the outer surfaces at both ends of the partition wall 38 and the outer surface at the center in the circumferential direction of the partition wall 38. A space between the outer side surface of the partition wall 38 and the inner side surface of the valve body 36 is partitioned by the partition wall 39 into first to third flow passages R1 to R3. And warm water distribute | circulates at the time of warm water circulation, the time of back washing | cleaning, the time of washing | cleaning, and an idle circulation to 1st flow path R1. Hot water flows through the second flow path R2 during hot water circulation and backwashing. Hot water flows through the third flow path R3 during cleaning. 5 to 8 show a schematic cross section of the five-way switching valve 8, but the casing 27 and the first to fourth ports P1 to P4 are shown as a single unit for convenience of explanation.
[0031]
A pair of outflow ports 40 and 41 are formed in the outer wall of the valve body 36 at both ends of the first flow passage R1. The outlets 40 and 41 communicate with each other through the first flow passage R1. The outlet 40 can correspond to the first and third ports P1 and P3 by the rotation of the valve body 36. Further, the outlet 41 can correspond to the first and second ports P1, P2 by the rotation of the valve body 36.
[0032]
An outlet 42 and an inlet 43 are formed on the outer wall of the valve body 36 at both ends of the second flow passage R2. The outflow port 42 and the inflow port 43 are communicated with each other via the second flow path R2. The outlet 42 can correspond to the second and fourth ports P2 and P4 by the rotation of the valve body 36. The inflow port 43 can correspond to the first and third ports P1 and P3 by the rotation of the valve body 36.
[0033]
An inflow port 44 and an outflow port 45 are formed in the outer wall of the valve body 36 at both ends of the third flow passage R3. The inflow port 44 and the outflow port 45 are communicated with each other via a third flow path R3. The inflow port 44 can correspond to the fourth port P4 by the rotation of the valve body 36. Further, the outlet 45 can correspond to the first port P <b> 1 by the rotation of the valve body 36.
[0034]
Then, the valve body 36 is reciprocally rotated by the actuator 30 by a control circuit (not shown), so that the five-way switching valve 8 is switched, and the hot water flow path is at the time of hot water circulation, reverse cleaning, cleaning or Switching is possible according to the idle circulation.
[0035]
Next, the operation of the hot water circulation processing device configured as described above will be described.
(During hot water circulation)
First, the effect | action at the time of warm water circulation is demonstrated. A control circuit (not shown) switches the valve body 36 to the hot water circulation position shown in FIG. Then, the outlet port 40 of the valve body 36 and the first port P1, the outlet port 42 of the valve body 36 and the second port P2, and the inlet port 43 of the valve body 36 and the third port P3 are communicated. The hot water in the bathtub 2 flows into the circulation pump 7 through the water absorption pipe 4 as shown in FIG. Hot water from the circulation pump 7 flows into the valve body 36 through the flow path pipe 11 a and the inflow port Pe of the five-way switching valve 8. Then, the hot water flows through the first flow path R1 and is discharged from the first port P1, and flows into the septic tank 9 through the flow path pipe 11b. In the septic tank 9, the waste contained in the warm water is removed by contacting and adhering to the purification stone, and the warm water is purified.
[0036]
The hot water that has flowed out of the septic tank 9 flows into the heat sterilization tank 10 through the flow path pipe 11c. In the heat sterilization tank 10, the hot water is sterilized by ultraviolet rays from a UV lamp (not shown) and heated to a predetermined temperature by a ceramic heater (not shown). The hot water flowing out from the heat sterilization tank 10 flows into the valve body 36 through the flow path pipe 11d and the third port P3 of the five-way switching valve 8. Then, the warm water flows through the second flow passage R2 and is discharged from the second port P2, and is discharged into the bathtub 2 through the water discharge pipe 5. The hot water is continuously circulated through the above-described hot water circulation path K1.
[0037]
(During reverse cleaning)
Next, the operation at the time of reverse cleaning will be described. A control circuit (not shown) switches the valve body 36 to the cleaning position shown in FIG. Then, the outlet 40 of the valve body 36 and the third port P3, the outlet 42 of the valve body 36 and the fourth port P4, and the inlet 43 of the valve body 36 and the first port P1 are communicated. As shown in FIG. 10, the hot water in the bathtub 2 flows into the valve body 36 through the inflow port Pe through the same path as that of the already described hot water circulation by driving the circulation pump 7. Then, the hot water flows through the first flow path R1, is discharged from the first port P3, and flows into the heat sterilization tank 10 through the flow path pipe 11d. The warm water that has flowed out of the heat sterilization tank 10 flows into the septic tank 9 through the flow path pipe 11c. The hot water flowing out from the septic tank 9 flows into the valve body 36 through the flow path pipe 11b and the first port P1 of the five-way switching valve 8. Then, the hot water flows through the second flow path R2 and is discharged from the fourth port P4, and is discharged to the drainage channel (not shown) through the drain pipe 12.
[0038]
As described above, the reverse cleaning path K2 is changed from the hot water circulation path K1 and the hot water is allowed to flow backward to adhere to the inner walls of the flow path pipes 11b to 11d, the inner wall of the septic tank 9, and the inner wall of the heat sterilization tank 10. Dirt residue such as waste from the human body is removed and washed. Further, the purification stone in the septic tank 9 is agitated by the flow pressure of the hot water flowing in the reverse direction, and dirt residue such as waste from the human body adhering to the surface is peeled and washed. The warm water containing the dirt residue is discharged into the drainage channel without returning to the bathtub 2.
[0039]
(When washing)
Next, the operation during cleaning will be described. A control circuit (not shown) switches the valve body 36 to the cleaning position shown in FIG. Then, the outlet 41 of the valve body 36 and the first port P1, the inlet 44 of the valve body 36 and the third port P3, and the outlet 45 of the valve body 36 and the fourth port P4 are communicated. As shown in FIG. 11, the hot water in the bathtub 2 is discharged from the first port P1 of the five-way switching valve 8 through the same route as the hot water circulation already described as shown in FIG. It is returned to the third port P3 of the five-way switching valve 8 through the tank 10. The hot water flowing into the valve body 36 flows through the third flow passage R3, is discharged from the fourth port P4, and is discharged through the drain pipe 12 to a drain channel (not shown).
[0040]
As described above, after the warm water is back-washed, the path is changed from the back-cleaning path K2 to the cleaning path K3, and the warm water is allowed to flow in the same direction as in the warm water circulation process, thereby allowing each flow path pipe 11b to Although dirt remains in the inner wall of 11d, the septic tank 9 and the heat sterilization tank 10, the hot water is discharged to the drainage channel without returning to the bathtub 2 along with the flow of the hot water.
[0041]
(During air circulation)
Next, the operation during idling will be described. A control circuit (not shown) switches the valve body 36 to the cleaning position shown in FIG. Then, the outlet 41 of the valve body 36 and the second port P2 are communicated. As shown in FIG. 12, the hot water in the bathtub 2 flows into the valve body 36 through the inflow port Pe through the same route as that of the already described hot water circulation by driving the circulation pump 7. Then, the hot water flows through the first flow path R1 and is discharged from the second port P2, and is discharged into the bathtub 2 through the water discharge pipe 5.
[0042]
As described above, by changing the path from the hot water circulation path K1 to the cleaning path K4, the path of the warm water that does not pass through the septic tank 9 and the heat sterilization tank 10 is shortened, so there is no loss of fluid pressure. For this reason, the flow pressure of the warm water returned in the bathtub 2 at the time of an idle circulation is raised rather than the time of a warm water circulation. Therefore, since warm water is discharged into the bathtub 2 vigorously, when there is a bubble generating device or the like at the downstream end of the water discharge pipe 5, the bubbles come out from the device vigorously.
[0043]
Therefore, in the hot water circulation processing apparatus of the present embodiment, the first to fourth ports P1 to P4 are provided on the side portion of the five-way switching valve 8. Therefore, there is no need to turn the water discharge pipe 5, the flow pipes 11b and 11d, and the drain pipe 12 from below the five-way switching valve 8, so that the pipes 5 for the ports P1 to P4 are located near the lower part of the five-way switching valve 8. It is not necessary to secure the connection space of 11b, 11d, and 12. As a result, the vertical dimension of the main body case 6 can be shortened.
[0044]
In addition, the first to fourth ports P1 to P4 are arranged so that their axis lines L1 and L2 intersect obliquely (θ = about 45 °) with respect to the front plate 6a and the back plate 6b. Therefore, rather than arranging the axes L1 and L2 of the ports P1 to P4 orthogonally to the plates 6a and 6b, the distances between the front ends of the ports P1 and P3 and the front plate 6a, and the ports P2 and P4, respectively. The distance between the front end of the plate and the back plate 6b becomes long. By securing this distance, the distance between the side portion of the five-way switching valve 8 and the front plate 6a and the back plate 6b is shortened and the pipes 5, 11b, 11d, 12 are connected to the ports P1 to P4. A sufficient space can be secured, and the size of the main body case 6 in the width direction can be shortened. Therefore, the whole main body case 6 can be reduced in size.
[0045]
Further, unlike the prior art, it is not necessary to secure an arrangement space for the water discharge pipe 5, the flow pipes 11 b and 11 d and the drain pipe 12 on the lower surface of the five-way switching valve 8. Therefore, the bottom area of the five-way switching valve 8 can be reduced, and the entire five-way switching valve 8 can be reduced in size. Therefore, the main body case 6 accommodating the five-way switching valve 8 can also be reduced in size.
[0046]
Further, since the five-way switching valve 8 is provided at the upper part of the main body case 6, the pipes 5, 11 b, 11 d, 12 connected to the five-way switching valve 8, the circulation pump 7, the septic tank 9, and the heat sterilization tank 10. The pipes 4, 5, 11 c connected to each other are not intensively piped near the lower part of the main body case 6. Therefore, it is not necessary to secure a large space for piping in the lower part of the main body case 6, and the entire main body case 6 can be reduced in size.
[0047]
The following modifications may be made without departing from the spirit of the present invention..
[0048]
(1The five-way valve switching 8 in the above embodiment was supported by the switching valve support frame 18. In addition to this, a suspension rod or the like may be attached to the upper frame 6c, and the five-way valve switch 8 may be detachably provided at the tip of the suspension rod. With this configuration, the structure inside the main body case 6 can be further simplified.
[0049]
While the embodiments of the present invention have been described above, technical ideas other than the claims that can be grasped from the embodiments will be described below together with their effects.
(A) In the hot water circulation processing apparatus according to claim 1, the switching valve 8 is disposed substantially in the center in the width direction of the main body case 6, and the axial lines L1 and L2 of the hot water circulation ports P1 to P4 and the wall surface of the main body case 6 The hot water circulation processing device in which the intersecting angle θ is approximately 45 °. According to this configuration, the space for connecting the hot water circulation pipes 5, 11b, 11a, and 12 to the hot water circulation ports P1 to P4 can be secured, so that the thickness of the main body case 6 in the width direction can be reduced.
[0050]
【The invention's effect】
As described above in detail, according to the invention of claim 1, the hot water circulation port isFive sidesSince it is provided at equal intervals on the side of the switching valve,Five sidesIt is not necessary to secure a connection space for the hot water circulation pipe to the hot water circulation port below the switching valve. As a result, the vertical dimension of the main body case can be shortened. Moreover, since the axis of the hot water distribution port obliquely intersects the wall surface of the main body case, a space for connecting the hot water distribution pipe to the hot water distribution port can be secured between the hot water distribution port and the wall surface of the main body case. Therefore,Five sidesThe switching valve and the wall surface of the main body case can be arranged close to each other, and the width of the main body case can be shortened.
[0051]
In addition, five sidesSwitching valve isBetween the septic tank and the heat sterilization tank andSince it is arranged at the upper part of the main body case, the hot water flow below the switching valveThroughHot water flow to the portThroughThe connection space of the pipe can be widened.
[Brief description of the drawings]
FIG. 1 is a front sectional view showing the inside of a hot water circulation treatment apparatus showing one embodiment.
FIG. 2 is a left side view showing the inside of the hot water circulation processing apparatus.
FIG. 3 is a plan view similarly showing a mounting structure of a five-way switching valve.
FIG. 4 is a longitudinal sectional view of a five-way switching valve.
FIG. 5 is a schematic cross-sectional view of a five-way switching valve.
FIG. 6 is a schematic cross-sectional view of a five-way switching valve.
FIG. 7 is a schematic cross-sectional view of a five-way switching valve.
FIG. 8 is a schematic cross-sectional view of a five-way switching valve.
FIG. 9 is also an explanatory diagram showing the flow of hot water during hot water circulation.
FIG. 10 is also an explanatory view showing the flow of hot water during reverse cleaning.
FIG. 11 is an explanatory view showing the flow of hot water during cleaning, similarly.
FIG. 12 is also an explanatory diagram showing the flow of hot water during idling.
FIG. 13 is a perspective view of the hot water circulation processing apparatus.
FIG. 14 is a schematic explanatory diagram of a hot water circulation processing device in the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 5 ... Water discharge pipe (warm water distribution pipe), 6 ... Main body case, 8 ... Five-way switching valve (switching valve), 9 ... Septic tank, 9a ... Upper port (primary side port), 11b, 11d ... Channel pipe (warm water circulation) Pipe), 12 ... drain pipe (hot water circulation pipe),9b... Lower port (secondary port), P1 to P4 ... First to fourth port (hot water distribution port)

Claims (1)

A septic tank that is provided in the main body case, passes hot water through the upper port during hot water circulation , and flows out through the lower port for purification.
A heat sterilization tank that is provided in the main body case and heat-sterilized by flowing the hot water flowing out of the septic tank through the hot water circulation pipe;
In addition to being provided in the main body case, provided with an inflow port and a plurality of hot water circulation ports, during hot water circulation, the hot water in the bathtub is guided to the upper port of the septic tank via any one of the hot water circulation ports, When the septic tank is back- washed , the hot water in the tub is guided to the lower port through one of the hot water circulation ports, and the hot water is circulated in a direction opposite to the circulation direction during circulation. In the hot water circulation processing device provided with a five-way switching valve capable of switching the path,
An inflow port is provided in the upper part of the five-way selector valve so that hot water in the bathtub flows through the hot water circulation pipe during hot water circulation or back washing of the septic tank, and hot water is used during hot water circulation or back washing of the septic tank. through the flow tube spaced apart at substantially equal intervals above the sides of five-way switching valve warm water distribution ports as flow or drainage of hot water, the five-way switching valve and the septic tank and the heat sterilization chamber A hot water circulation processing device , wherein the hot water circulation port is disposed so as to intersect the wall surface of the main body case in an oblique direction .

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