JP2000014557A - Lid fixing structure for hot water reserving tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide lid fixing structure for a hot water reserving tank, which can easily be attached and detached while sufficiently secure heat insulating property. SOLUTION: A flange 37 is formed at the upper edge of a tank body 31 and, a recessed part 38 is formed at a lid 32. On the lower surface of the part 38, a float switch 43 and a temperature sensor 44 are provided in a drooping state at a prescribed position. A positioning member 41 positioning the rotating direction of the lid 32 by being fitted to a water feeding port 35 is provided at the outer periphery of the lid 32. A heat insulating material 64 of large thickness is housed in the part 38. When the lid 32 is positioned to be fitted to the flange 37 of the tank body 31 and after then fixed to the main body of a tea service machine by covering with a top plate, the outer peripheral part 39 of the lid 32 is pressed to the flange 37 through the material 64 and the lid 32 is fixed by covering the opening of the top surface of the tank body 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for fixing a lid of a hot water storage tank provided in a tea machine or the like.

[0002]

2. Description of the Related Art The basic structure of a tea dispenser is provided with a hot water storage tank for holding hot water at a predetermined temperature and storing the hot water at an upper position in a tea dispenser body, and a hot water supply pipe drawn out of the hot water storage tank. Is facing the pouring position where the tea strainer that houses the tea leaves is provided, and opens the solenoid valve provided in the hot water supply pipe to discharge a predetermined amount of hot water toward the tea strainer, thereby discharging tea. It is supposed to.

The above-mentioned hot water storage tank has a structure in which a lid is placed over an opening on the upper surface of a cylindrical tank body having a bottom. Conventionally, a structure in which the lid is fixed to an opening edge of the tank body is as follows. The one shown in FIG. 9 was employed. In this apparatus, a mounting flange b is formed inward at an opening edge of the tank main body a, while a window hole d through which an upper edge portion of the tank main body a is inserted is formed on a top plate c of the tea dispenser main body. The tank body a is opened, and after the heat insulating material e is attached to the peripheral surface, the tank body a is attached to the inside of the tea dispenser body with its upper edge protruding from the window hole d of the top plate c, and the protruding flange is provided. A cover f is applied to b and fixed at a plurality of locations with screws g.

[0004]

With the above structure, the lid f can be relatively easily removed from the outside of the ceiling of the tea dispenser body, and maintenance of a float switch and a temperature sensor provided in the tank body a can be performed. It is convenient when doing. However, since the ceiling portion including the lid f of the hot water storage tank is exposed to the outside, it is not always preferable when heat insulation is taken into consideration. The present invention has been completed based on the above circumstances, and an object of the present invention is to provide a hot water storage tank lid fixing structure capable of easily attaching and detaching while sufficiently securing heat insulation. It is in.

[0005]

As means for achieving the above object, the invention of claim 1 is provided in a device body such as a tea machine, and has a lid on the upper surface of the tank body which is opened on the upper surface. In the hot water storage tank covered with, the lid is fixed, the top plate of the device body presses the lid against the opening edge of the tank body via a heat insulating material,
The feature is that the lid is fixed. A second aspect of the present invention is characterized in that, in the first aspect of the present invention, a positioning means for positioning the lid in a rotational direction is provided between the lid and the tank body.

[0006]

<Function and Effect of the Invention><Invention of Claim 1> Since the lid is pressed against the opening edge of the tank main body by the top plate of the equipment main body via the heat insulating material, the heat insulating property is excellent. In addition, since the lid can be removed as it is by removing the top plate, it is convenient when performing maintenance on a float switch and a temperature sensor provided in the tank body.

<Invention of Claim 2> In a hot water storage tank, a water supply port is provided at a predetermined position on the upper side, and a float switch and a temperature sensor may be provided in a hanging manner from a lid. At that time, the float switch is desirably provided at a position as far away from the water supply port as possible so that the water level can be accurately detected by avoiding the effect of ripples accompanying the water supply,
In addition, it is desirable that the temperature sensor is also provided at a position separated from the water supply port, particularly at a location near the hot water outlet, so as to avoid the influence of the change of the hot water temperature accompanying the water supply. In this regard, in the present invention, since the positioning means is provided between the lid and the tank main body, the float switch or the temperature sensor can be accurately positioned at a desired position to fix the lid.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIG. First, the overall structure of the tea machine will be described with reference to FIGS. Reference numeral 1 denotes a main body of the tea machine, which is formed in a vertically elongated box shape with an upper side projecting to the front, supported by legs 2 provided at the four corners of the bottom surface, and in an opening at the front of the projecting portion, The door 3 is attached via a hinge 4 so as to be openable and closable. An L-shaped panel 5 is provided in the main body 1 from the right front surface to the back surface, and the inside (right side) of the panel 5 serves as a machine room, and a water supply cassette 7 can be stored at the outside bottom. It has been. A hot water storage tank 9 for storing hot water with a heater is disposed in an upper part on the back side of the machine room 6,
Fresh water is supplied from the water supply cassette 7 via the pump 10 (see FIG. 5).

A canister 11 for storing tea leaves is provided at an upper position of the front portion 5A of the panel 5. At the lower part of the canister 11, there is provided a tea leaf supply unit 13 having a built-in quantitative drum (not shown) capable of scooping tea leaves and dropping them by a predetermined amount. Covered with. From the hot water storage tank 9, a hot water supply pipe 16 provided with an electromagnetic valve (not shown) is drawn out and protrudes from the front surface 5A of the panel 5, and a shower-type hot water supply port 17 is attached to the protruding end thereof. 14 and are arranged side by side.

A tea strainer 19 for accommodating tea leaves is attached to a funnel 20 at a position below the tea leaf supply port 14 and the hot water supply port 17 on the front portion 5A of the panel 5, and the left side of FIG. Can be inverted.
At a position below the funnel 20, a mounting table 22 for mounting a container A such as a teacup is attached, and a tea waste container 23 is provided on the front surface of the water supply cassette 7 described above. A drive mechanism for inverting the funnel 20, rotating the fixed quantity drum of the tea leaf supply unit 13, and opening and closing the shutter 15 is provided at a position on the near side in the machine room.

When a tea switch 25 provided on the front surface of the door 3 is operated, a predetermined amount of hot water is discharged from a hot water supply port 17 toward a tea strainer 19 containing tea leaves, and the tea is poured out of the container. Put in A. A predetermined number of times (for example, 5 times)
When the tea is poured out, the funnel 20, that is, the tea strainer 19, is driven to the tea discarding container 23 side, and the tea husk is discarded in the tea discarding container 23. Subsequently, while the tea strainer 19 is returning to the original position, the tea leaf supply port 1 is placed in an oblique posture.
4 and a predetermined amount of fresh tea leaves is supplied into the tea strainer 19. After that, the tea strainer 19 returns to its original position, and the next tea can be poured. In addition, funnel 2
An auxiliary hot water supply pipe 27 drawn out of the hot water storage tank 9 faces the side of the outlet 20A of the hot water 0.
Is operated, the solenoid valve provided in the auxiliary hot water supply pipe 27 is opened, and a predetermined amount of hot water is poured into the container A.

Next, the structure of the arrangement portion of the hot water storage tank 9 will be described in detail. The hot water storage tank 9 is, as shown in FIG.
The tank body 31 has a cylindrical shape with a bottom and a disk-shaped lid 32 that covers an opening on the upper surface thereof. A heat insulating material 33 is wound around the outer peripheral surface of the tank main body 31, and a bracket protruding from the outer peripheral surface is screwed to the inner wall of the main body 1 of the tea dispenser, thereby as described above. It can be attached to the upper part on the back side. A water supply port 35 is provided at a predetermined position on the upper end side of the inner peripheral surface of the tank body 31, and a water supply pipe 36 provided with the pump 10 interposed therebetween.
Is connected to the water supply cassette 7 (see FIG. 5).
An outward flange 37 is provided on the upper edge of the tank body 31.
Are formed.

The lid 32 is formed in a disk shape as described above,
A circular concave portion 38 is formed at the center portion, and the outer peripheral portion 39 of the lid 32 can be brought into contact with the flange 37 of the tank body 31. Here, at a predetermined position on the outer peripheral edge of the lid 32, a bifurcated positioning member 41 that fits from above into the outwardly projecting portion of the water supply port 35 is provided. Therefore, the lid 32 is positioned in the rotation direction by fitting the positioning member 41 to the water supply port 35.

A float switch 43 for detecting the level of hot water stored in the tank body 31 and a temperature sensor 44 for detecting the temperature of hot water are provided on the lower surface side of the concave portion 38 of the lid 32. The float switch 43 has a float 46 mounted on a vertically oriented guide pipe 45 so as to be able to move up and down freely, and a reed switch (not shown) inside a stopper 47 provided near the upper end and the lower end thereof. Is provided, and the upper and lower water levels are detected by the ups and downs of the float 46. For example, the upper limit water level is used to indicate a full water level, and the lower limit water level is used to indicate a water level that needs replenishment. From the upper end of the guide pipe 45, a lead wire 48 connected to each reed switch is drawn out.

The structure for attaching the float switch 43 to the lid 32 is as shown in FIGS. A mounting groove 50 is provided around the outer periphery of the upper end side of the guide pipe 45, and a retaining ring 51 such as a C-ring can be fitted therein.
On the other hand, at a predetermined position of the concave portion 38 of the lid 32, a housing portion 52 capable of housing the above-mentioned retaining ring 51 is formed by being lifted upward, and a guide pipe 45 is substantially tightly closed at the center of the ceiling surface of the housing portion 52. Is formed by burring. A holding plate 54 is provided. The holding plate 54 has a U-shaped groove 55 formed at one end so as to sandwich the outer periphery of the guide pipe 45 and a cylindrical portion formed downward at the other end. Then, a screw hole 56 is cut in the inner periphery thereof.

Therefore, the guide pipe 45 is attached to the mounting groove 50.
After the retaining ring 51 is fitted to the lid 32, the upper end thereof is inserted from below into the steady rest cylindrical portion 53 of the lid 32, and the insertion is stopped when the retaining ring 51 hits the ceiling of the housing portion 52.
After that, the holding plate 54 is inserted from the side into the lower surface side of the accommodating portion 52 so as to sandwich the guide pipe 45 in the U-groove 55, and the screw 5 is inserted through the insertion hole 58 opened in the concave portion 38.
The holding plate 54 is fixed by screwing the screw 9 into the screw hole 56 of the holding plate 54, whereby the guide pipe 45 of the float switch 43 is attached vertically from the lower surface of the concave portion 38 of the lid 32. .

One temperature sensor 44 is used to control the power cut-off of the heater based on the detected temperature to maintain the stored hot water at a substantially constant temperature. Regarding the mounting structure, an elongated mounting plate 61 is attached to a predetermined position on the lower surface of the concave portion 38 of the lid 32 with a screw 60 in a hanging manner, a temperature sensor 44 is attached to a lower end thereof, and a lead wire 62 is attached to the mounting plate. It is wired along 61 and is drawn upward from an opening 63 formed in the recess 38.

Here, when the positioning member 41 is aligned with the water supply port 35 and the lid 32 is placed on the flange 37 of the tank body 31, the float switch 43 and the temperature sensor 44
Means that the mounting position of the temperature sensor 44 is set so as to be as close as possible to the tap hole 35A with the water supply port 35 interposed therebetween. This is for the float switch 43 to detect the water level more accurately by minimizing the influence of the waving of the water surface when water is supplied from the water supply port 35. Further, the temperature sensor 44 is also made to be less affected by a change in hot water temperature when water is supplied.

Further, a heat insulating material 64 is provided which can be accommodated in the recess 38 of the lid 32. The heat insulating material 64 is formed in a thick disk shape, and has a thickness larger than the depth of the recess 38. The heat insulating material 64 is formed with a steady rest cylindrical portion 53 formed on the lid 32, a peripheral portion thereof, and an escape hole 65 for fitting and releasing a screw 59, and an insertion hole for the lead wire 62 on the temperature sensor 44 side. 66
, An escape hole 67 into which the screw 60 is fitted and escaped is formed.

This embodiment has the above-described structure,
The installation of the hot water storage tank 9 is performed as follows. First, in a state where the top plate 70 of the main body 1 of the tea dispenser is opened, the tank main body 3 having the heat insulating material 33 wound around the peripheral surface is provided.
1 is screwed and fixed to the side wall of the main body 1 of the tea dispenser. Next, the float switch 43 and the temperature sensor 44 are attached to the lid 32 in the manner described above. After that, the steady hole portion 53 and the like of the lid 32 are fitted in the escape hole 65, and the insertion hole 66 and the escape hole 67 are aligned with the opening 63 and the screw 60, respectively. Fix it. At this time, the lead wire 48 of the float switch 43 and the lead wire 62 of the temperature sensor 44
Is drawn out to the upper surface of the heat insulating material 64 through the escape hole 65 and the insertion hole 66, and is caused to flow in a predetermined direction. Such a lid 32 connects the positioning member 41 on the outer peripheral edge to the water supply port 35.
And fitted on the flange 37 of the tank body 31. Finally, as shown in FIG. 5, when the top plate 70 is put on the main body 1 of the tea dispenser and fixed to the upper edge of the side plate 71 with the screw 72, the outer peripheral portion 39 of the lid 32 is interposed via the heat insulating material 64. The lid 32 is pressed against the flange 37 of the tank body 31 so that the lid 32 covers the opening on the upper surface of the tank body 31 and is fixed.

When the float switch 43 and the temperature sensor 44 disposed in the tank body 31 are to be maintained, the screws 72 are loosened, the top plate 70 is removed, and the lid 32 is lifted. The temperature sensor 44 can be taken out together.

As described above, according to the present embodiment,
Since the lid 32 is pressed and fixed to the flange 37 of the tank main body 31 via the heat insulating material 64 by the top plate 70 of the main body 1 of the tea dispenser, the upper surface as well as the peripheral surface is thermally insulated from the outside, and the heat insulating property It will be excellent. Further, if the top plate 70 is removed, the lid 32 can be lifted and removed as it is, which is convenient when performing maintenance on the float switch 43 and the temperature sensor 44.

Since the lid 32 is provided with a positioning member 41 which fits into the water supply port 35, the float switch 43 and the temperature sensor 44 are arranged at predetermined positions in the tank body 31 only by positioning and covering the lid 32. be able to. Note that the present invention is not limited to the embodiment described with reference to the above description and drawings, and can be implemented with various modifications without departing from the scope of the invention.

[Brief description of the drawings]

FIG. 1 is a perspective view of a tea machine according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state where a door is opened.

FIG. 3 is a front view in which a door is removed.

FIG. 4 is a side view in which a side plate is removed.

FIG. 5 is a sectional view of an arrangement portion of a hot water storage tank.

FIG. 6 is an exploded perspective view of the hot water storage tank.

FIG. 7 is an exploded perspective view showing a mounting structure of a guide pipe of the float switch.

FIG. 8 is a sectional view of the mounting portion.

FIG. 9 is a sectional view of a conventional example.

[Explanation of symbols]

1: Tea machine body 9 ... Hot water storage tank 31 ... Tank body
32 ... lid 35 ... water supply port 37 ... flange 38 ... concave part 41 ... positioning member 43 ... float switch 4
4 ... Temperature sensor 64 ... Insulation material 70 ... Top plate

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tomio Suyama 3-16 Hoshizaki Electric Co., Ltd., Sakaemachi Minamikan, Toyoake-shi, Aichi Prefecture (72) Inventor Takeshi Shima 3-16-16 Hoshizaki Electric Co., Ltd. (72) Inventor Yu Hirosawa 3-16, Sakae-cho Minamikan, Toyoake-shi, Aichi F-term (reference) in Hoshizaki Electric Co., Ltd. 3E047 AA02 BA01 DA01 DA06 DC02 DC04 EA07 EC08 ED04 ED05 4B004 AA18 BA43

Claims (2)

[Claims] 1. A hot water storage tank provided in a device body such as a tea machine and having a lid placed on the upper surface of a tank body opened to the upper surface, wherein the lid is fixed. A lid fixing structure for a hot water storage tank, wherein the lid is fixed by a top plate pressing the lid against an opening edge of the tank body via a heat insulating material. 2. A hot water storage tank lid fixing structure, wherein a positioning means for positioning the lid in a rotation direction is provided between the lid and the tank body.