JP2942767B1 - Vapor discharge structure of liquid container - Google Patents

Abstract

Abstract: In a vapor discharge structure of a liquid container, when an outlet side of a safety valve set provided in a vapor passage of a lid is higher than a bottom of a communication passage of a container main body, dew condensation water generated in the communication passage is surely removed. Reflux to the inner container. SOLUTION: The bottom surface of the steam passage between the outlet side of the safety valve set 21 provided in the steam passage 17 of the lid 14 and the steam passage outlet 25 is formed lower than the bottom H ₀ of the communication passage 18a of the container body 11, On the bottom surface, a condensed water return hole 38 having a check valve 33 was provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vapor discharge structure for a liquid container.

[0002]

2. Description of the Related Art In a liquid container such as an electric water heater or an electric water heater type humidifier, a lid is attached to a hinge portion around an opening of the container body so as to be openable and closable, and the lid communicates with an inner container inside the container body. A steam discharge structure is provided in which a steam passage is provided, and a safety valve set is interposed in the middle of the steam passage. In this case, a steam port as an end of the steam passage is generally provided on the upper surface of the lid (for example, see Japanese Unexamined Patent Publication No.
176413).

[0003] In the above-described steam discharge structure, the bottom of the steam passage in that portion is connected to the safety valve in order to return the condensed water generated in the steam passage from the outlet side of the safety valve set to the steam port to the inner container. The height at the outlet side of the set is equal to or higher than the height of the set, so that the condensed water is returned through the safety valve set.

[0004]

However, according to the above-described steam discharge structure, the bottom of the steam passage between the safety valve set and the steam port cannot be made lower than the outlet side of the safety valve set. In addition, the safety valve set needs to have a certain height because it is necessary to secure the stroke of the metal ball inside. For this reason, there is a problem that the thickness of the lid cannot be made smaller than a certain value.

[0005] In particular, in the case of a humidifier, when a configuration is adopted in which the steam port is provided on the rear upper surface of the container body, a hinge portion is avoided in a part of the steam passage from the outlet side of the safety valve set to the steam port. A communication passage must be provided at a relatively low position. If the outlet side of the safety valve set is provided at a position lower than the bottom of such a low communication passage to return the dew condensation water, the position of the safety valve set is further lowered and the thickness of the lid is further increased. The following problems occur.

[0006] Therefore, the present invention ensures the formation of dew water even if there is a lower portion than the outlet of the safety valve set at the bottom of the steam passage between the outlet side of the safety valve set and the steam port as in the above-mentioned communication passage. It is another object of the present invention to provide a steam discharge structure capable of returning to an inner container.

[0007]

In order to solve the above-mentioned problems, according to the present invention, a lid is attached to a hinge portion around an opening of a container body so as to be freely opened and closed, and the lid communicates with an inner container inside the container body. In the vapor discharge structure of a liquid container provided with a vapor passage and a safety valve set interposed in the vapor passage, a communication passage matching the vapor passage outlet of the lid is provided below a hinge portion of the container main body, and The container body is provided with a steam port communicating with the communication passage, the outlet side of the safety valve set is provided at a position higher than the bottom of the communication passage, and the steam passage between the outlet side of the safety valve set and the steam passage outlet is provided. A condensed water return hole is provided at the bottom, and a check valve is attached to the condensed water return hole.

The case of the safety valve set constitutes a part of the steam passage from the outlet side of the safety valve set to the steam passage outlet, and the above-mentioned condensed water return hole is provided at the bottom of the steam passage. Alternatively, it is possible to adopt a configuration in which the bottom of the steam passage from the outlet side of the safety valve set to the steam passage outlet is provided at a position lower than the bottom of the communication passage.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to an electric water heater type humidifier shown in the accompanying drawings. In this humidifier, as shown in FIGS. 1 and 2, an inner container 12 with a heater is housed inside a container body 11, and an opening 13 is closed by a lid 14 which is attached to the container body 11 so as to be openable and closable. I have. The hinge 15 of the lid 14 is provided at the rear of the periphery of the opening 13, and a steam port 16 is provided above the container body 11 behind the hinge 15.

The inner container 12 communicates with a steam port 16 through a steam passage 17 in the lid 14 and a steam passage 18 in the container body 11 as shown in FIG. The air passage 20 of the air blower 19 communicates with the air passage. Steam generated by boiling the hot water in the inner container 12 is blown out from the steam port 16 to the outside.

The steam passage 17 of the lid 14 is divided into a lower steam passage 17a and an upper steam passage 17b by valve holes 22, 22 'of a safety valve set 21 provided in the middle thereof. From the hole 24 of the lid 23 to the valve holes 22, 2
2 ′, and the upper steam passage 17b is connected to the valve holes 22, 22 ′.
To a steam passage outlet 25 provided on the rear surface of the lid 14.

The vapor passage 18 of the container body 11 has a communication passage 18a provided horizontally below the portion where the hinge portion 15 and the hinge lock plate 26 of the lid 14 are provided.
There is an ejection passage 18 b that is mixed with the air from the air passage 20 and reaches the steam port 16.

A packing 27 (see FIG. 3) attached to the end of the communication passage 18a is brought into close contact with the steam passage outlet 25.

As shown in FIG. 4, the safety valve set 21 includes a case 28, a pair of valve boxes 29, 29 ', two metal balls 31, 31' housed in each of the valve boxes 29, 29 '.
Each of the valve boxes 29 and 29 'is constituted by a common bottom plate 32 and a pair of check valves 33 made of synthetic resin.

The case 28 has a cylindrical portion 36 with an open bottom surface at a part of the mounting plate 34, and a rearward projecting portion 35 at a portion surrounding the rear half circumference of the cylindrical portion 36 of the mounting plate 34. Mounting legs 37 are provided at two locations around the mounting plate 34 and two locations on both sides of the protrusion 35. Further, a pair of dew condensation water return holes 38 are provided at the lowest part of the protrusion 35. The outlet side 40 of the safety valve set 21 is formed by cutting out a portion corresponding to the above-mentioned protrusion 35 around the upper surface 30 of the cylindrical portion 36.

A large-diameter valve hole 49 is provided at the center of the upper surface portion 30.
Is provided, and a small-diameter valve hole 49 'is provided between the valve hole 49 and the outlet side 40 formed by the notch. The upper surface 30 is slightly tapered so that these valve holes 49 and 49 'are at a low position.

Each of the valve boxes 29 and 29 'is formed by bending a metal plate to form a cubic having an open bottom, and a large-diameter valve hole 39 which matches the above-described valve hole 49 is formed on the upper surface of one of the valve boxes 29. The valve hole 4 is provided on the upper surface of the other valve box 29 '.
A small diameter valve hole 39 'matching 9' is provided. Each of these valve boxes 29 and 29 ′ is incorporated in the case 28, and after storing the metal balls 31 and 31 ′ in each case, the bottom plate 32 is applied and fixed by screws 41.

The above-described valve hole 22 matches the above-mentioned valve holes 49 and 39 (see FIGS. 2 and 3), and the above-mentioned valve holes 49 'and 39' match each other. Valve hole 2
2 '.

The check valve 33 is connected to the above-mentioned condensed water return hole 3.
8 is attached by inserting a boss portion 43 into a pin 42 provided in the vicinity of the lower surface of the hole 8 so as to contact the lower surface of the dew condensation water return hole 38 to prevent the passage of steam from the lower surface to the upper surface, and to condense water in the reverse direction Is allowed to pass.

As shown in FIG. 5, the safety valve set 21 is fitted into a recess 45 provided in a portion of the middle cover 44 constituting the cover 14 near the hinge portion 15, and a screw hole around the recess 45 is provided. It is fixed to 46 with screws 47. After assembling the safety valve set 21 as described above, the inner lid 23 is fixed with screws 48.

As shown in FIG. 3 (a), the upper steam passage 17 is formed by the recess 45 of the inner lid 44 and the safety valve set 21.
b is formed, and the protrusion 35 of the safety valve set 21 forms the bottom of the upper steam passage 17b.

As shown in FIG. 3B, the safety valve set 21 is set based on the bottom H ₀ of the communication passage 18a of the container body 11.
Shows a cutout of up to 40 height as the exit side in the H _1. Similarly, with respect to the bottom H ₀ of the communication passage 18a, showing the depth of the condensed water refluxing hole 38 serving as the lowest of the bottom of the upper steam passage 17b in H _2.

The steam discharge structure of the embodiment is as described above, and the operation will be described next. The steam generated in the inner container 12 enters the lower steam passage 17a from the hole 24 of the inner lid 23 as shown by an arrow in FIG.
It enters the upper steam passage 17b through the safety valve set 21. Then, the gasket 27 and the communication passage 18 pass through the steam passage outlet 25.
The gas is ejected from the steam port 16 to the outside through the ejection passage 18b through the a.

The condensed water generated in the lower steam passage 17a is returned to the inner container through an appropriate hole provided in the inner lid 23. Also, the dew water generated above the safety valve set 21 in the upper steam passage 17b falls on the upper surface portion 30, passes through the inside of the safety valve set 21 from the two valve holes 22, 22 ', and is similar to the above. It is refluxed.

Condensation water generated in the upper steam passage 17b from the outlet side 40 of the safety valve set 21 to the steam passage outlet 25 and condensation water generated in the communication passage 18a and the packing 27 are removed by the safety valve set 21. The condensed water gathers on the protruding portion 35, pushes the check valve 33 open, and is returned to the inner container 12 through the dew condensation water return hole 38.

As described above, the outlet 4 of the safety valve set 21
The condensed water generated in the communication passage 18a in the 0 from H ₁ by a low position, without passing through the safety valve set 21,
Since so as to reflux through the condensed water refluxing hole 38 described above, in the interior of the safety valve set 21 the lid 14 can be put together in H ₁ position higher than the bottom of the communication passage 18a, the thickness of the lid 14 by that amount Can be reduced.

In the above embodiment, the depth of the portion of the condensed water return hole 38 with respect to the bottom H ₀ of the communication passage 18a is H _2.
However, this is to collect dew water without fail,
This is to ensure a certain storage capacity.

The safety valve set 21 includes valve holes 22, 2
Two valve devices of different size 2 'are installed side by side,
This is because when the lid 14 is closed suddenly, the metal balls 31, 3
In order to prevent 1 'from closing the valve holes 22 and 22' at the same time, the metal ball 31 'on the small-diameter valve hole 22' side is opened early to prevent the internal pressure from rising. Things.

[0029]

As described above, according to the present invention, the steam passage and the container are provided by providing a dew condensation water return hole with a check valve at the bottom of the steam passage from the outlet side of the safety valve set to the steam passage outlet. Condensed water generated in the communication passage on the main body side can be returned to the inner container. Further, with the above configuration, the outlet side of the safety valve set can be provided at a position higher than the bottom of the communication passage, so that the thickness of the lid can be reduced, and the size of the entire liquid container can be reduced. .

[Brief description of the drawings]

FIG. 1 is a perspective view of a humidifier according to an embodiment.

FIG. 2 is a sectional view of the above.

FIG. 3 is a partially enlarged sectional view of the above.

FIG. 4 (a) is a perspective view of the safety valve set of the above embodiment; FIG. 4 (b) is a sectional view taken along line bb of FIG.

FIG. 5 is an exploded perspective view of the lid as viewed from the bottom side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Container main body 12 Inner container 13 Opening part 14 Lid 15 Hinge part 16 Steam port 17 Steam path 17a Lower steam path 17b Upper steam path 18 Steam path 18a Communication path 18b Spouting path 19 Blower 20 Blow path 21 Safety valve set 22, 22 ' Valve hole 23 Inner lid 24 Hole 25 Steam passage outlet 26 Hinge lock plate 27 Packing 28 Case 29, 29 'Valve box 30 Upper surface portion 31, 31' Metal ball 32 Bottom plate 33 Check valve 34 Mounting plate 35 Projection portion 36 Cylindrical portion 37 Leg 38 Condensed water return hole 39, 39 'Valve hole 40 Exit side 41 Screw 42 Pin 43 Boss part 44 Middle lid 45 Recess 46 Screw hole 47 Screw 48 Screw 49, 49' Valve hole

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F24H 1/18 A47J 27/21 101

Claims (3)

(57) [Claims] 1. A lid is openably and closably attached to a hinge around an opening of a container body, and a steam passage communicating with an inner container inside the container body is provided on the lid, and a safety valve set is interposed in the steam passage. In the vapor discharge structure of the liquid container
A communication passage matching the steam passage outlet of the lid is provided below the hinge portion of the container main body, and a steam port communicating with the communication passage is provided in the container main body, and an outlet side of the safety valve set is connected to the communication passage. A condensation water return hole is provided at the bottom of the steam passage from the outlet side of the safety valve set to the steam passage outlet, and a check valve is attached to the condensation water return hole. Vapor discharge structure of liquid container. 2. The case of the safety valve set described above,
The liquid according to claim 1, wherein a part of a steam passage from an outlet side of the safety valve set to a steam passage outlet is formed, and the dew condensation water return hole is provided at a bottom of the steam passage. Vapor discharge structure of container. 3. The steam valve according to claim 1, wherein the bottom of the steam passage from the outlet side of the safety valve set to the steam passage outlet is provided at a position lower than the bottom of the communication passage. Vapor discharge structure of liquid container.