JPS6343696B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a device capable of controlling internal temperature either alone or in combination with a heat insulating container or heating device.

(b) Conventional technology Publicly known technologies for thermoses and pots with thermometers include Utility Model Application No. 80872, 1983;
No. 136057, Utility Model Application No. 146167 and Utility Application No. 146167-
It is stated in No. 152671.

Fig. 1 is a cross-sectional view showing the outline of the patent application No. 152,671/1989 [Thermometer stopper with thermometer attached].
As shown in the figure, in this technology, the thermometer is attached to the stopper of a thermos flask, which has 8 parts of the outer shell of the stopper with a built-in knob 6 and an insulating material 7, and the thermometer is installed on the top of the stopper.
The temperature sensitive part consists of an elongated tube 1, an elongated spiral bimetal 2, a heat sensitive shaft 3 at the tip thereof, and a heat conducting wire 4 extending upward. It penetrates the heat insulating material 7 and the scale plate 13 to reach the upper part, where the heat conduction wire 4 and the pointer 5 are connected. In this form, the heat sensing parts 1, 2, 3, and 4 protrude elongately from the bottom surface of the outer shell 8-2 of the stopper to the bottom of the container interior 9, so that only liquids can be stored in the container, and solid objects cannot be stored in the container. I can't do it. The structure is elongated and protrudes, making it vulnerable to impact and easily damaged. Furthermore, when hot water is poured into the container, water vapor in the intervening air may form water droplets due to the difference in temperature with the outside temperature and adhere to the glass surface covering the upper dial 13, making the pointer invisible for several days. Additionally, it is difficult to attach items such as pot lids. The shapes and structures of other 3-pins described in the published publications are not much different from those described above and have the above-mentioned drawbacks.

(c) Problems to be solved by the invention In this invention, the temperature sensing part of a single unit or a thermometer is closely attached to the inner bottom surface of the stopper or lid of the container, and a rod-shaped inverted conical plano-convex lens is connected thereon. The object of the present invention is to provide a thermometer device in which a desiccant is sealed in a hole provided in the center of a lens, which can solve all of the above-mentioned drawbacks, and which can monitor the internal temperature from the outside.

(d) Means for Solving the Problems To explain this invention based on the drawings, FIG. A case 10 for a heat-sensitive device is provided with a claw 15-2 with a bent tip and a pointer 5 on the outer tip, a hole 12 in the center of a scale plate 13, and a shaft 11 with a groove at the tip inserted through the hole. Dial plate 1 on the internal bottom surface 14 of
3 and the back side of the spiral bimetal 15.
A thermometer is constructed by fitting and fixing a claw 15-2 whose center portion is bent onto a shaft 11 having a groove at its tip. However, the pointer 5 is provided at the center tip of the spiral bimetal 15, and the outer tip and the vessel-shaped heat-sensitive part case 1 are connected to each other.
The inner bottom surface 14 of 0 may be connected and fixed. The figure also shows the outer peripheral bottom surface 24 of the vessel-shaped heat-sensitive part case 10, which will be described later.

Among the examples shown in FIG. 3, a rod-shaped inverted conical plano-convex lens 19
The lens has a convex lens 16 at the top, a flat lens 17 at the bottom, and the entire circumference of the side surface is polished and integrated. This is the situation stated in claim 1. Furthermore, the flat lens described above with a hole 21 formed in the center is claimed in claim 2.
It is in the condition described in section.

The whole image in FIG. 3 is a cross section of a thermos flask in which a thermometer incorporating the parts shown in FIG. 2 is fitted and fixed to the bottom of each of these plano-convex lenses. For this adhesion, it is best to make it vacuum-tight to prevent the intrusion of water vapor, and a step 20 is provided on the lower outer periphery of the rod-shaped inverted conical plano-convex lens to allow the inner side surface 23 of the vessel-shaped heat-sensitive part case 10 shown in FIG. The thermometer that is integrated with the thermometer is sealed in a vacuum-tight manner, or the desiccant is sealed in the hole 21 provided in the center of the flat lens to prevent vapor adhering to the flat lens 17 of the thermometer. It is effective to maintain the effect of preventing fogging, and either one of these may be installed, or a combination of these may be installed.

FIG. 4 shows a cross-section of a thermos flask equipped with a stopper that integrates the mechanisms shown in FIGS. 2 and 3, and FIG. 5 shows a partial cross-section of the same when it is attached to the lid of a pot. FIG. 4 shows a state in which the bottom surface 24 of the aforementioned vessel-shaped heat-sensitive part case 10 and the inner bottom surface 25 of the stopper are in close contact, and FIG. Tip 2 of the screw leg
6 shows a state in which they are in close contact with each other. This state of close contact is desirable in order to improve the efficiency of heat conduction inside the container. The embodiments shown in FIGS. 4 and 5 are in accordance with claim 3.

(E) Function When the temperature display section of the present invention is attached to the bottom bottom of the stopper or lid knob, as the length increases, the scale plate 13 sinks to the bottom of the hole, and the temperature scale is displayed. This is done in consideration of the fact that it will be difficult to adjudicate. When the outer peripheral bottom surface 18 of the rod-shaped inverted conical plano-convex lens 19 shown in FIG. flat lens 17
, is reflected by the scale plate 13, travels in the opposite direction, passes through the upper convex lens 16 again, forms an image, and the scale is enlarged, making it easier to judge. Therefore, there is no need to install a special light source for illuminating the scale plate 13. In addition, since the surface area of the scale plate 13 can be set small, the bar-shaped inverted conical plano-convex lens 1
By changing the oblique angle and curvature of 9, the enlargement effect can be freely selected.

(C) Embodiment FIG. 4 shows a thermos container (thermos flask) in which a granular desiccant 22 is sealed in a hole 21 provided at the center of the bottom flat lens 17 of the rod-shaped inverted conical plano-convex lens 19 shown in FIG. ) is a cross-sectional view of the plug attached to the plug. Fifth
The figure is a partial cross-sectional view of a rod-shaped inverted conical plano-convex lens having a short length and having the same conditions as above, which is attached to the knob 6 of the lid of a heating device (pan). With this device, as shown in FIG. 4, liquids or solids in a wide temperature range from high to low temperatures can be stored, and the heat retention state of the container interior 9 can be monitored from the direction of the upper convex lens surface 16. Similarly, in FIG. 5, the heating condition inside the container can be monitored from the outside. The rod-shaped inverted conical plano-convex lens shown in Figure 3 has a height of 71 mm.
When the bottom diameter was 16 mm, the top diameter was 28 mm, the oblique angle was 8°, and the curvature was 0.0143, both the reflection effect and the magnification effect were good.

(G) Effects of the Invention This invention does not cause clouding of the dial due to water vapor or damage due to impact. This applies to solids as well as liquids stored in containers. In addition to the above-mentioned embodiments,
It is also used in refrigerators, cooler boxes, medicine cans, rice cookers, etc. Also, even when used alone as shown in Figure 3, it can be used as a stopper for choshi, test tubes, beakers, etc. to monitor the temperature, and its effects are expected to be widespread. It is also used industrially because it can be mass-produced.

(H) Other related materials: Utility Model Application No. 48-74087, Utility Model Application No. 52-95960, Utility Model Application No. 52-107172, Utility Model Application No. 54-123883, Utility Model Application No. 1987
−128485, Utility Model Publication No. 153333, Japanese Patent Application Publication No. 1983-
No. 210528.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a thermos flask using a known technology that can display temperature, Fig. 2 is an exploded perspective view of a thermometer using bimetal, and Fig. 3 is an integrated inverted conical plano-convex lens and thermometer according to the present invention. Cross-sectional view of the 4th
The figure is a sectional view of a thermos flask equipped with the device of the present invention, and FIG. 5 is a partial sectional view of the lid of the pot. 1... Elongated pipe, 2... Spiral bimetal, 3... Heat-sensitive shaft, 4... Heat conducting wire, 5... Pointer, 6... Knob, 7... Insulating material, 8... Outer shell of stopper, 8-2... Bottom of the outer shell of the stopper, 9... Inside the container, 10... Vessel-shaped heat sensitive part case, 11... Shaft with a groove at the tip, 12... Hole drilled in the center of the dial, 13... Scale plate, 14... Internal bottom surface of vessel-shaped heat-sensitive part case, 15... Spiral bimetal, 15-
2...Claw with bent center tip of spiral bimetal, 16...Convex lens part, 17...Plano lens part, 18...Side part of inverted conical plano-convex lens, 19
... Inverted conical plano-convex lens, 20... Step provided on the outer part of the lower part of the inverted conical plano-convex lens, 21... Hole provided in the center of the plano lens, 22... Desiccant, 23...
Inside of the outer periphery of the case of the heat sensitive device, 24...Bottom surface of the case of the heat sensitive device, 25...Inner bottom surface of the stopper, 26
...Tip of screw leg, 27...screw thread.

Claims (1)

[Claims] 1. A thermometer that integrates a rod-shaped inverted conical plano-convex lens with a mirror-polished side surface on a vessel-shaped heat-sensitive part consisting of a spiral bimetal, a scale plate, and a pointer, and measures the internal temperature. A thermometer device that can be enlarged and monitored externally. 2. A thermometer that integrates the rod-shaped inverted conical plano-convex lens of claim 1 with a hole provided from the center of the planar lens and the vessel-shaped heat-sensitive section, which magnifies the internal temperature and monitors it externally. A thermometer device that can be used. 3. When the rod-shaped inverted conical plano-convex lens of claim 1 or 2 is housed inside the stopper or lid knob of a heat-insulating container or heating container, the internal temperature can be magnified and monitored from the outside. Thermometer device.