JP6798147B2 - Sterilization device and hot water device - Google Patents

Description

The present invention relates to a sterilization device and a hot water device.

Conventionally, the water sterilizer described in JP-A-2014-46306 (Patent Document 1) and the sterilizer described in JP-A-2014-76422 (Patent Document 2) are known.

The water sterilizer described in Patent Document 1 has a housing, an ultraviolet lamp, and a pair of nozzles. The UV lamp is housed in a housing. The nozzle communicates with the inside of the housing. The water introduced into the housing from one nozzle swirls around the ultraviolet lamp inside the housing and is discharged from the other nozzle. In the water sterilizer described in Patent Document 1, a swirling flow is generated by introducing water from the tangential direction of the inner peripheral surface of the housing by a nozzle.

The sterilizer described in Patent Document 2 has a housing and a light source. The housing has a tubular flow path inside. The light source irradiates the fluid flowing through the tubular flow path with ultraviolet rays. The sterilizer described in Patent Document 2 has a structure that causes a swirling flow of a fluid in a tubular flow path. More specifically, the inlet side flow path for introducing the fluid into the tubular flow path is provided at a position offset from the central axis of the tubular flow path.

Japanese Unexamined Patent Publication No. 2014-46306 Japanese Unexamined Patent Publication No. 2014-76422

As described above, Patent Document 1 and Patent Document 2 disclose a configuration for swirling the fluid to be sterilized in the housing. However, both Patent Document 1 and Patent Document 2 describe a problem that a pressure loss occurs when a fluid to be sterilized is passed through a housing, and a detailed configuration for solving the problem. Neither has been suggested.

The present invention has been made in view of such problems of the prior art. That is, the present invention provides a sterilization device and a hot water device capable of suppressing a pressure loss when passing a fluid to be sterilized.

The sterilization device according to one aspect of the present invention has a sterilization lamp and a flow path of a fluid to be sterilized inside, stores the sterilization lamp inside, and has an opening at an end. It includes a tubular main body and a lid member arranged in the opening. The lid member has, inside, a connection port through which the fluid to be sterilized enters and exits, and a cavity communicating with the connection port on one side and communicating with the flow path on the other side.

The inner wall of the cavity defines an in-lid flow path through which a fluid to be sterilized flows inside the lid member. The inner wall of the cavity is inclined so as to approach the main body as it goes around the central axis of the main body from the connection port side toward the flow path side.

According to the sterilization device according to one aspect of the present invention, it is possible to suppress the pressure loss when the fluid to be sterilized is passed through the internal flow path of the main body.

In the above sterilization device, the portion located at the end of the inner flow path on the connection port side is a portion located around the central axis of the main body from the end of the inner flow path on the connection port side. It may be inclined so as not to overlap with. In this case, it is possible to further suppress the pressure loss when the fluid to be sterilized is passed through the flow path inside the main body.

In the above sterilization apparatus, the connection port may include a parallel portion whose inner peripheral surface is parallel to the central axis of the connection port. The width of the portion communicating with the cavity of the connection port in the direction perpendicular to the central axis of the main body may be smaller than the width of the parallel portion of the connection port in the direction perpendicular to the central axis of the main body.

In the above sterilization device, the height of the portion communicating with the cavity connection port in the direction parallel to the central axis of the main body is parallel to the central axis of the main body portion communicating with the cavity of the connection port. It may be larger than the maximum height in any direction. In this case, it is possible to further suppress the pressure loss when the fluid to be sterilized is passed through the flow path inside the main body.

In the above-mentioned sterilization device, the lid member arranged at one end of the main body and the lid member arranged at the other end of the main body may have the same shape. In this case, the lid member on the inlet side of the fluid to be sterilized and the lid member on the outlet side of the fluid to be sterilized can be shared, and the manufacturing cost of the sterilization device can be reduced. Is possible.

The water heating device according to one aspect of the present invention includes a circulation path and the above-mentioned sterilization device arranged on the circulation path. According to the hot water device according to one aspect of the present invention, it is possible to suppress the pressure loss when sterilizing the fluid to be sterilized flowing in the circulation path.

According to the present invention, it is possible to suppress a pressure loss when passing a fluid to be sterilized.

It is a perspective view of the sterilization apparatus which concerns on embodiment. It is sectional drawing in II-II of FIG. It is sectional drawing of the 1st lid member. It is sectional drawing in IV-IV of FIG. It is sectional drawing in VV of FIG. It is a top view which shows the shape of the flow path which is composed of a flow path in a lid and a connection port on a water entry side. It is sectional drawing in VII-VII of FIG. It is sectional drawing in VIII-VIII of FIG. It is a schematic diagram which shows the structure of the hot water apparatus which concerns on embodiment.

(Configuration of sterilization device according to the embodiment)
The configuration of the sterilization apparatus according to the embodiment will be described below with reference to FIGS. 1 to 8. The same or corresponding parts in each figure are designated by the same reference numerals. In addition, at least a part of the embodiments described below may be arbitrarily combined. Furthermore, the dimensional relationships such as length, width, thickness, and depth are appropriately changed for the purpose of clarifying the drawings, and do not represent the actual dimensional relationships.

As shown in FIG. 1, the sterilization apparatus according to the embodiment includes a main body portion 1, a sterilization lamp 2, and a lid member 3. The lid member 3 is composed of a pair of a first lid member 3a and a second lid member 3b. The sterilization device according to the embodiment may further include a fixing member 4.

The main body 1 has a tubular shape. Preferably, the main body 1 has a cylindrical shape. That is, the cross section of the main body 1 in the direction perpendicular to the central axis A1 is preferably circular. For the main body 1, for example, stainless steel or the like is used.

As shown in FIG. 2, a disinfectant lamp protection tube 11 is provided inside the main body 1. The sterilization lamp protection tube is a member for protecting the sterilization lamp 2 from the fluid flowing inside the main body 1. The sterilization lamp protection tube 11 is arranged inside the main body 1. The disinfectant lamp protection tube 11 preferably has a cylindrical shape. The disinfectant lamp protection tube 11 is longer than the main body 1. The sterilization lamp protection tube 11 is transparent to the light emitted from the sterilization lamp 2. For example, quartz glass is used for the disinfectant lamp protection tube 11.

The main body 1 has a flow path 12. The flow path 12 is provided inside the main body 1. More specifically, the flow path 12 is a space defined by the outer peripheral surface of the disinfectant lamp protection tube 11 and the inner wall surface of the main body 1. A fluid (for example, hot water) to be sterilized will flow through the flow path 12.

The main body 1 has an end 13. The end portion 13 is a portion located at the end in the direction parallel to the central axis A1 of the main body portion 1. At the end portion 13, the main body portion 1 has an opening portion 14. The main body 1 preferably has openings 14 at both ends 13. Preferably, the end portion 13 has a shape extending in the outer peripheral direction when viewed from a direction parallel to the central axis A1 of the main body portion 1. This makes it easy to insert the lid member 3 into the main body 1.

The sterilization lamp 2 is a lamp that emits light that sterilizes a fluid. Preferably, the sterilization lamp 2 is a fluorescent lamp that emits ultraviolet rays. The sterilization lamp 2 may be an LED (Light Emitting Diode) that emits ultraviolet rays. That is, the sterilization lamp 2 is not particularly limited as long as it is a lamp that sterilizes a fluid. The sterilization lamp 2 is arranged inside the main body 1. More specifically, the disinfectant lamp 2 is inserted inside the disinfectant lamp protection tube 11. The sterilization lamp 2 has a shape extending in a direction parallel to the central axis A1 of the main body 1. The end of the sterilization lamp 2 is an electrical component 21 to which a socket and electrical components are attached.

The first lid member 3a has an inner surface 31, an outer surface 32, and an outer peripheral surface 33. The inner side surface 31 is a surface on the side to be inserted into the main body 1. The outer side surface 32 is a surface opposite to the inner side surface 31. A water entry portion 33a is provided on the outer peripheral surface 33. The water entry portion 33a has a tubular shape with a hollow inside. Specifically, the inside of the water inlet portion 33a is a water inlet side connection port 33b. The water entry side connection port 33b is offset from the central axis A1 of the main body 1.

The inner side surface 31 side of the first lid member 3a is a tip portion 34. The tip portion 34 has an outer diameter substantially equal to the inner diameter of the main body portion 1. The first lid member 3a is arranged in the opening 14 by inserting the tip 34 into the opening 14 of the main body 1. A seal member 35 is arranged between the tip end portion 34 and the end portion 13 of the main body portion 1. The seal member 35 is, for example, an О ring. As a result, the opening 14 is closed, and the fluid to be sterilized is prevented from flowing out from the main body 1.

A cavity 36 is provided inside the first lid member 3a. The cavity 36 is located on the outer surface 32 side of the tip portion 34. The cavity 36 is open to the inner side surface 31 side of the first lid member 3a. As a result, the cavity 36 communicates with the flow path 12. The inner diameter of the cavity 36 is larger than the outer diameter of the disinfectant lamp protection tube 11. Therefore, a space is formed between the inner wall 36a of the cavity 36 and the outer peripheral surface of the sterilization lamp protection tube 11. This space is the inner flow path 37 in the lid. The cavity 36 communicates with the water inlet side connection port 33b. Therefore, the in-lid flow path 37 communicates with the water inlet side connection port 33b on one side.

The inner lid flow path 37 is a space between the inner wall 36a of the cavity 36 and the outer peripheral surface of the sterilization lamp protection tube 11, and the sterilization lamp protection tube 11 is arranged parallel to the central axis A1 of the main body 1. Therefore, the in-lid flow path 37 is provided so as to orbit around the central axis A1 of the main body 1.

As described above, since the cavity 36 is open to the inner side surface 31 side, the fluid to be sterilized, which is injected into the water inlet side connection port 33b, flows through the cavity 36 inside the main body 1. It flows on the road 12. That is, the in-lid flow path 37 communicates with the flow path 12 on the other hand.

As shown in FIG. 3 (note that in FIG. 3, in order to clarify the shape of the inner wall 36a of the cavity 36, the members other than the first lid member 3a are not shown), the inner wall of the cavity 36. The 36a is inclined so as to be closer to the main body 1 side as the distance from the water inlet side connection port 33b increases. That is, the inner wall 36a of the cavity 36 is inclined so as to approach the main body 1 as it orbits around the central axis A1 of the main body 1 from the water entry side connection port 33b side toward the flow path 12 side. Therefore, the inner lid flow path 37 is inclined so as to approach the main body 1 from the water inlet side connection port 33b toward the flow path 12.

As shown in FIG. 4 (Note that in FIG. 4, in order to clarify the positional relationship between the position of the inner wall 36a of the cavity 36 and the water inlet side connection port 33b, the illustration of members other than the first lid member 3a is omitted. The inner flow path 37 in the lid is preferably inclined so as not to overlap with each other in the direction of the central axis A1 of the main body 1.

From another point of view, the inner wall 36a of the cavity 36 has a portion located at the end of the inner flow path 37 on the water inlet side of the inner flow path 37 on the water inlet side connection port 33b side. It is preferable that the main body portion 1 is inclined so as not to overlap with a portion located around the central axis A1 of the main body portion 1 once.

As shown in FIG. 5, the width of the main body 1 of the water inlet side connection port 33b in the direction perpendicular to the central axis A1 is the width W1 in the portion communicating with the cavity 36. The water entry side connection port 33b has a parallel portion 33ba. In the parallel portion 33ba, the inner peripheral surface of the water entry side connection port 33b is parallel to the central axis A2 of the water entry side connection port 33b. The width of the main body 1 of the water inlet side connection port 33b in the direction perpendicular to the central axis A1 is the width W2 in the parallel portion 33ba. The width W1 is narrower than the width W2. As a result, as shown in FIG. 6, the cavity 36 and the water inlet side connection port 33b communicate with each other in the fluid flow path to be sterilized, which is composed of the inner lid flow path 37 and the water inlet side connection port 33b. The width is narrowed before and after the part.

As shown in FIG. 7, the height of the main body 1 of the cavity 36 in the direction parallel to the central axis A1 is the height H1 at the portion communicating with the water inlet side connection port 33b. The maximum height of the water inlet side connection port 33b is the height H2 at the portion communicating with the cavity 36. The height H1 is higher than the height H2. As a result, as shown in FIG. 8, the cavity 36 and the water inlet side connection port 33b communicate with each other in the fluid flow path to be sterilized, which is composed of the inner lid flow path 37 and the water inlet side connection port 33b. The height is high before and after the part.

As shown in FIG. 2, a lamp insertion hole 38 is provided on the outer surface 32 side of the first lid member 3a. The lamp insertion hole 38 communicates with the cavity 36. The inner diameter of the lamp insertion hole 38 is substantially equal to the outer diameter of the disinfectant lamp protection tube 11.

The end of the disinfectant lamp protection tube 11 is inserted into the lamp insertion hole 38. A seal member 39 is provided between the lamp insertion hole 38 and the outer peripheral surface of the disinfectant lamp protection tube 11. The seal member 39 is, for example, an O-ring. As a result, the fluid to be sterilized is prevented from flowing out from the first lid member 3a.

A lamp fixing member 22 is provided on the outer surface 32 of the first lid member 3a. The sterilization lamp 2 installed inside the sterilization lamp protection tube 11 is fixed by the lamp fixing member 22 through the lamp insertion hole 38 of the first lid member 3a. The lamp fixing member 22 is fixed on the outer surface 32 of the first lid member 3a by, for example, a screw or the like. For the lamp fixing member 22, for example, SPS or the like is used.

The second lid member 3b is the same as the first lid member 3a except that it has a water outlet 33d and a water outlet 33e in place of the water inlet 33a and the water inlet connection port 33b. It has a configuration. Preferably, the second lid member 3b has the same shape as the first lid member 3a.

Here, when the second lid member 3b has the same shape as the first lid member 3a, the first lid member 3a and the second lid member 3b have completely the same shape. The case where the shape of the first lid member 3a and the shape of the second lid member 3b match within the range of the manufacturing error is included.

The fixing member 4 is arranged so as to sandwich the first lid member 3a, the second lid member 3b, and the main body 1 from the direction of the central axis of the main body 1. As a result, the first lid member 3a and the second lid member 3b are fixed to the main body 1. The fixing member 4 has a central portion 41 and a fixing portion 42. The central portion 41 is located at the center of the fixing member 4 and extends along the central axis direction of the main body portion 1. The fixing portion 42 is fixed to the outer surface 32 of the first lid member 3a and the second lid member 3b with screws or the like.

The fixing member 4 is formed, for example, by bending a single plate-shaped member using a press die. For the fixing member 4, for example, SGCC (hot-dip galvanized steel sheet) is used.

The operation of the sterilizer according to the embodiment will be described below. A fluid to be sterilized is supplied to the water inlet side connection port 33b of the sterilization device according to the embodiment. The supplied fluid to be sterilized flows through the flow path 12 provided inside the main body 1. Since the water entry side connection port 33b is provided offset from the central axis A1 of the main body 1, the supplied fluid to be sterilized flows in the flow path 12 as a swirling flow.

While the fluid to be sterilized is flowing through the flow path 12, the fluid to be sterilized is irradiated with ultraviolet rays from the sterilization lamp 2. As a result, various germs contained in the fluid to be sterilized are sterilized. After that, the sterilized fluid in the flow path 12 flows out from the water outlet side connection port 33e. As described above, the sterilization treatment is performed by passing the fluid to be sterilized through the sterilization apparatus according to the embodiment.

(Structure of hot water device according to embodiment)
The configuration of the hot water supply device as an example of the hot water device according to the embodiment will be described below with reference to FIG. The water heater according to the embodiment has a hot water supply path 51, a bath circulation path 52, and a hot water pouring path 53.

The hot water supply route 51 is a route for heating clean water. The hot water supply path 51 includes a pipe 51a, a pipe 51b, and a heat exchanger 51c. One end of the pipe 51a is connected to the water supply. The other end of the pipe 51a is connected to one end of the heat exchanger 51c. The other end of the heat exchanger 51c is connected to one end of the pipe 51b. The other end of the pipe 51b is connected to a faucet or the like. A burner 51d is arranged in the vicinity of the heat exchanger 51c.

The bath circulation path 52 is a path for heating the hot water in the bathtub 6. The bath circulation path 52 includes a pipe 52a, a pipe 52b, a pipe 52c, a sterilization device 52d, and a heat exchanger 52e. The sterilization device 52d is a sterilization device according to the above embodiment.

One end of the pipe 52a is connected to the water inlet side connection port 33b of the sterilizer 52d. The other end of the pipe 52a is connected to the circulation adapter 61. The water outlet side connection port 33e of the sterilizer 52d is connected to one end of the pipe 52b. The other end of the pipe 52b is connected to one end of the heat exchanger 52e. The other end of the heat exchanger 52e is connected to one end of the pipe 52c. The other end of the pipe 52c is connected to the circulation adapter 61. A burner 52f is arranged in the vicinity of the heat exchanger 52e. A circulation pump 52g is provided on the pipe 52a. When the sterilization device 52d is attached to the housing of the hot water supply device, the central portion 41 of the fixing member 4 serves as a guide for attachment.

The hot water pouring route 53 is a route for flowing hot water from the hot water supply route 51 into the bath circulation route 52. One end of the hot water injection path 53 is connected to the hot water supply path 51. More specifically, one end of the pouring path 53 is connected to the pipe 51b. The other end of the pouring path 53 is connected to the bath circulation path 52. More specifically, the other end of the pouring path 53 is connected to the pipe 52b. A pouring valve 53a is provided on the pouring path 53.

The circulation adapter 61 is provided in the bathtub 6. The circulation adapter 61 has a discharge port and a suction port.

The operation of the hot water supply device as an example of the hot water device according to the embodiment will be described below.
First, the hot water supply operation will be described. The supplied clean water is supplied to the heat exchanger 51c via the pipe 51a. The clean water supplied to the heat exchanger 51c is heated in the heat exchanger 51c to become hot water. This hot water is supplied to the faucet or the like via the pipe 51b.

Next, the hot water filling operation will be described. The supplied clean water is supplied to the heat exchanger 51c via the pipe 51a. The clean water supplied to the heat exchanger 51c is heated in the heat exchanger 51c to become hot water. The pouring valve 53a is in the open state during the hot water filling operation. Therefore, this hot water is supplied to the bathtub 6 through the pouring path 53, the pipe 52c, and the discharge port of the circulation adapter 61.

Further, the sterilization operation will be described. The hot water in the bathtub 6 is sucked up from the suction port of the circulation adapter 61 by the circulation pump 52 g in the direction of the arrow in the drawing. The sucked hot water is supplied to the sterilizing device 52d via the pipe 52a. The hot water supplied to the sterilizer 52d is sterilized by the sterilizer 52d. The sterilized hot water is returned to the bathtub 6 via the pipe 52b, the heat exchanger 52e, the pipe 52c, and the discharge port of the circulation adapter 61. As a result, the hot water in the bathtub 6 is sterilized. The hot water sterilized by the sterilizer 52d may be heated in the heat exchanger 52e. That is, the sterilization operation may be performed during the reheating operation.

(Effect of sterilization device and hot water device according to the embodiment)
In the sterilization device according to the embodiment, the inner lid flow path 37 orbits around the central axis A1 of the main body portion 1, and the main body portion 1 goes from the water inlet side connection port 33b side toward the flow path 12 side. It is tilted to approach. Therefore, in the sterilization apparatus according to the embodiment, the pressure loss when the fluid to be sterilized supplied from the water inlet side connection port 33b becomes a swirling flow in the flow path 12 is suppressed.

Further, in the sterilization device according to the embodiment, since the in-lid flow path 37 has such a configuration, it is difficult for the fluid to be sterilized to remain when draining water, and the flow path when passing water. The air inside 12 is easy to escape.

In the sterilization device according to the embodiment, when the in-lid flow path 37 is inclined so as not to overlap with each other in the direction of the central axis A1 of the main body 1, the sterilization target supplied from the water inlet side connection port 33b The fluid and the fluid to be sterilized flowing in the inner flow path 37 do not collide with each other. Therefore, in this case, the pressure loss when the fluid to be sterilized supplied from the water inlet side connection port 33b becomes a swirling flow in the flow path 12 is further suppressed.

In the sterilization apparatus according to the embodiment, when the height H1 is higher than the height H2, the width of the water inlet side connection port 33b is reduced in the portion where the water inlet side connection port 33b and the in-lid flow path 37 communicate with each other. Even so, since the cross-sectional area of the flow path does not fluctuate significantly, the pressure loss when the fluid to be sterilized supplied from the water inlet side connection port 33b becomes a swirling flow in the flow path 12 is further suppressed.

In the sterilization device according to the embodiment, when the first lid member 3a and the second lid member 3b have the same shape, the same member can be used in common. Therefore, in this case, the manufacturing cost can be reduced.

In the hot water device according to the embodiment, since the pressure loss of the sterilization device according to the embodiment can be suppressed, the load of the circulation pump 52 g during the sterilization operation can be reduced. As a result, for example, it becomes possible to use 52 g of a circulation pump having a smaller output.

The embodiments disclosed this time should be considered as exemplary in all respects and not restrictive. The scope of the present invention is indicated by the scope of claims rather than the above-described embodiment, and is intended to include meaning equivalent to the scope of claims and all modifications within the scope.

1 Main body, 11 Disinfection lamp protection tube, 12 flow path, 13 end, 14 opening, 2 Disinfection lamp, 21 Electrical equipment, 22 Lamp fixing member, 3 Lid member, 3a 1st lid member, 3b No. 2 lid member, 31 inner side surface, 32 outer side surface, 33 outer surface surface, 33a water inlet part, 33b water inlet side connection port, 33ba parallel part, 33d water discharge part, 33e water discharge side connection port, 34 tip part, 35 seal member, 36 Cavity, 36a inner wall, 37 inner lid flow path, 38 lamp insertion hole, 39 seal member, 4 fixing member, 41 central part, 42 fixing part, 51 hot water supply path, 51a, 51b, 52a, 52b, 52c piping, 51c, 52e Heat exchanger, 51d, 52f burner, 52 bath circulation path, 52d sterilization device, 52g circulation pump, 53 pouring path, 53a pouring valve, 6 bathtub, 61 circulation adapter, A1 central axis of main body, A2 water inlet Central axis, H1, H2 height, W1, W2 width.

Claims (6)

With a disinfectant lamp
The disinfectant lamp protection tube that houses the disinfectant lamp and
A tubular main body that houses the sterilization lamp and the sterilization lamp protection tube and has an opening at the end.
A lid member arranged in the opening is provided.
The main body has an internal flow path of a fluid to be sterilized, which is defined by the outer peripheral surface of the sterilization lamp protection tube and the inner wall surface of the main body.
The lid member has, inside, a connection port through which the fluid to be sterilized enters and exits, and a cavity communicating with the connection port on one side and communicating with the flow path on the other side.
The inner wall of the cavity and the outer peripheral surface of the sterilization lamp protection tube demarcate the inner flow path in the lid through which the fluid to be sterilized flows inside the lid member.
A sterilizing device in which the inner wall of the cavity is inclined so as to approach the main body as it goes around the central axis of the main body from the connection port side toward the flow path side. The portion located at the end of the inner flow path on the connection port side is a portion located at a position around the central axis of the main body portion from the end of the inner flow path on the connection port side. The sterilizing apparatus according to claim 1, which is inclined so as not to overlap. The connection port includes a parallel portion whose inner peripheral surface is parallel to the central axis of the connection port.
The width of the connection port in the portion communicating with the cavity in the direction perpendicular to the central axis of the main body is smaller than the width of the connection port in the parallel portion of the main body in the direction perpendicular to the central axis of the main body. , The sterilization apparatus according to claim 1 or 2. The height of the portion of the cavity communicating with the connection port in the direction parallel to the central axis of the main body is parallel to the central axis of the main body of the portion communicating with the cavity of the connection port. The sterilizing device according to any one of claims 1 to 3, which is larger than the maximum height in the direction. Any of claims 1 to 4, wherein the lid member arranged at one end of the main body and the lid member arranged at the other end of the main body have the same shape. The sterilizing device according to item 1. Circulatory pathway and
A water heating device including the sterilization device according to any one of claims 1 to 5, which is arranged on the circulation path.

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