JPS6330363Y2 - - Google Patents

Description

[Detailed Description of the Invention] a. Field of Industrial Application The present invention relates to an electric fryer for heating and cooking fish, vegetables, etc. using a liquid, especially edible oil.

b. Prior Art In a conventional electric fryer, as shown in FIG. Two extended heater tubes 32
Generally, it is fixed with a fixing band 33 between the heater tubes 32, or, as shown in FIG. 2, it is fixed with a wire 33 to one of the heater tubes 32. In these electric fryers, a heater is placed in the oil tank to heat the oil and cook the food, so when stirring the oil with chopsticks or a scooping net, removing fried crumbs, and putting food in and out. ,
Temperature sensing tube 30 and capillary tube 34
Chopsticks, nets, etc. often came into contact with the thermostat, damaging it and causing the thermostat to malfunction. The fryer mentioned above also has a thermostat, indicator lamp,
This is a type of fryer in which the heating device, which includes an electrical equipment box 31 in which a power switch, a power cord, etc. are installed, and a heater attached thereto, is attached to and removed from the oil tank. When the thermosensor 30 and the capillary tube 34 are removed from the workbench and placed on a workbench, the thermosensor tube 30 and the capillary tube 34 often come into contact with corners of the workbench, protrusions, etc., and are damaged. Further, the heater tube 32 is relatively long and has a bent shape, so it is elastic, and therefore, when the heater tube is processed, the tube recoils, resulting in poor dimensional accuracy. Furthermore, when the heater tubes are turned on and off, the heater tubes expand, but the spacing between the heater tubes changes each time. became loose. Furthermore, when the heater tube 32 is deformed due to expansion and contraction,
There was a problem getting the heater tube in and out of the oil tank.

c. Purpose of the invention The present invention is intended to eliminate the above-mentioned drawbacks. It protects the temperature-sensing tube and capillary of the liquid temperature thermometer that controls the temperature of the liquid in the tank, improves the processing accuracy of the heater, and The purpose of the present invention is to provide an electric fryer that prevents deformation of the heater.

d Structure of the invention The electric fryer of the invention has at least two non-heat generating parts in which the heater that heats the liquid in the tank does not generate heat, and the non-heat generating part is immersed in the liquid in the tank, and the side wall of the tank It has a bent part that curves along the bottom wall from above, and a connecting member that is mutually fixed to the heater part of each non-heat generating part above the bent part, and a connecting member that is attached to the connecting member to detect the temperature of the liquid in the tank. It is characterized by having a temperature-sensitive cylinder.

e. Embodiment Next, a preferred embodiment of the electric fryer of the present invention will be described in detail with reference to the drawings.

In FIG. 3, a circular liquid tank 1 that stores a liquid (for example, edible oil) is fixed to a concave support 2 by a fastener 20 such as a set screw. A U-shaped latch 5 is attached to the portion with a fixture such as a screw.
At the bottom of the latch 5, there is an extension 5 extending outward.
a is provided, and a heating device 4 is provided on the extension.
A protrusion 22 is provided for energizing the heater 3 and the heater energizing lamp 7.

The heating device 4 mainly consists of a substantially annular heater 3 disposed on the bottom of the liquid tank 1 to heat the liquid in the tank, and an electrical box 11 that supports the heater 3 and houses electrical components and the like. There is. The electrical equipment box 11 includes a fixing metal fitting 13' which is inserted into a hole 5b formed by the outer circumferential wall of the support body and the hanging metal fitting 5 and is a bent metal fitting which is detachably attached to the hanging metal fitting 5 and further bent. , a liquid temperature thermostat 6 connected to a thermosensor tube 12 that detects the temperature of the liquid in the liquid tank, and a heater energization indicator lamp 7 that indicates whether the heater 3 is energized.
and a handle 8 for gripping the electrical equipment box 11.

As shown in FIG. 7, the heater 3 is composed of a heater tube having a non-heat generating part 3a that does not generate heat and a heat generating part 3b that generates heat to heat the liquid in the tank. The inside of the non-heat generating portion 3a of the heater tube is filled with non-conductive magnesia 24, and a rod-shaped non-heat generating member 25 made of conductive metal (for example, SUS304) is embedded therein. The inside of the heat generating part 3b of the heater tube is filled with magnesia 24 similar to the non-heat generating part 3a, and a heat generating member (for example, nichrome wire) 26 connected to the non-heat generating member 25 is embedded therein. . In addition, the non-heat generating part 3
The boundary between a and the heat generating portion 3b is indicated by A.

As best shown in FIG. 6, the two heater tubes extending in parallel from the front part of the electrical box 11 curve downward, and further curve from the side wall of the tank to the bottom wall of the tank. It forms a ring shape at the top.
The boundary A between the non-heat generating part and the heat generating part is located at a part farther from the second bending part B with respect to the electrical equipment box 11.

As shown in FIGS. 5 and 6, the heater pipe portion of the non-heat generating part 3a, which is slightly above the bent part B along the side wall to the bottom wall of the tank and immersed in the liquid in the tank, A connecting member 13 (for example, a stainless steel round bar, square bar, plate, etc.) that connects the two heater tubes to each other is fixed by welding or the like. Connected to one heater tube between two heater tubes,
Other non-heat generating portions to which the connecting member 13 is fixed may be further provided. The temperature sensing cylinder 12 of the liquid temperature thermometer is placed on the fixed member 14 above the connecting member 13 fixed in this way.
Attached by The fixing member 14 may be, for example, a wire or a tubular member that is fixed to the connecting member 13 by welding or the like and has a portion that holds the temperature-sensitive tube 12. When the horizontally arranged connecting member 13 is made of a round rod, the diameter of the round rod is the same as that of the temperature sensing tube 12.
It is preferable that the diameter is larger than the diameter of . The capillary tube 27 connecting the temperature sensing tube 12 and the liquid temperature thermostat 6 is shown in FIGS. 5 and 6.
As shown in the figure, the heater 3 is
It is disposed so as to enter the electrical equipment box 11 along the back side of the electrical equipment box 11.

FIG. 8 shows one embodiment of the electric circuit of the electric fryer of the present invention. In this electric circuit, the contacts of the power switch SW, the overheat prevention thermometer Th that prevents the temperature of the liquid from rising abnormally,
The contacts of the liquid temperature thermostat 6 are connected in series, and the contacts of the liquid temperature thermostat 6 are connected to the heater 3 connected in parallel.
and the heater energizing lamp 7 are connected. still,
A heater cover 9 is attached to the handle 8 of the electrical equipment box 11, and a liquid draining net 10 is attached thereon.

Next, the operation of the electric fryer of the present invention will be explained.
Pour a predetermined amount of liquid into the liquid tank 1, set the liquid temperature thermostat 6 to a predetermined temperature, and hold the heating device 4 with your hand.
As shown in FIG. 9, the fixture 13' is hung on the hook 5. Thereby, the heating device 4 is securely fixed to the support body 2 without moving forward, backward, left or right. At the same time, the heater 3 is placed along the bottom of the liquid tank 1, and the power switch SW in the electrical equipment box 11 is pressed by the protrusion 22 and closed. As a result, the heater 3 and the heater energizing lamp 7 are energized through the closed contacts of the liquid temperature thermostat 6, and current flows from the non-heat generating member 25 to the heat generating member 26, causing the heat generating member to generate heat. At this time, the non-heat generating member 25 does not generate heat. Therefore, the heat generating part 3b immersed in the liquid in the tank heats the liquid, but the connecting member 13 and the thermosensor cylinder 12 connected to the non-heat generating part 3a are not heated by the heat generating part 3b. .

When the temperature of the liquid in the liquid tank reaches a predetermined temperature, the temperature sensing cylinder 12 of the liquid temperature thermostat 6 detects this and opens the contacts of the liquid temperature thermostat 6, stopping the energization of the heater 3 and the heater energization lamp 7. do. When the temperature of the liquid in the liquid tank 1 falls below a predetermined temperature due to heat radiation, the contacts of the liquid temperature thermostat 6 are closed again to energize the heater 3 and the lamp 7 to heat the liquid in the tank. In this way, the temperature of the liquid in the liquid tank is maintained approximately constant. Since the temperature-sensing tube 12 of the liquid temperature thermometer is attached to the connecting member 13, chopsticks, a wire mesh, etc. come into contact with the connecting member 13 before the temperature-sensing tube 12 and the capillary tube 27 do when cooking. You can cook without damaging the food. On the other hand, when the heating device 4 is lifted and the fixing fitting 13' is removed from the latch fitting 5, the contact of the power switch SW is opened by the protrusion 22, and the energization of the heater 3 and the heater energizing lamp 7 is stopped.

f. Effects of the invention As described above, the electric fryer of the invention provides the following effects.

1 Even if the dimensional accuracy of the distance between the heater tubes, the diameter of the tubes, and the angle of inclination with respect to the horizontal varies, the heater tubes are fixed to each other by the connecting member near the bent portion, so the dimensional accuracy of the heater processing is improved. A heater with uniform and stable precision can be obtained.

2. Since the connecting member is fixed to the non-heat generating part of the heater tube, there is no deformation or distortion of the heater even if the heat generating part expands and contracts repeatedly, and the heater can always be smoothly inserted and removed from the tank. The mounting part of the electrical box will not come loose.

3. Since the temperature-sensitive tube of the liquid temperature thermometer is attached to the connecting member, during cooking, chopsticks, nets, etc. can easily come into contact with the connecting member before the temperature-sensitive tube or capillary tube, and this makes it easier for the temperature-sensitive tube or capillary tube to come into contact with the connecting member. Damage is reduced and failures of the liquid temperature thermostat can be reduced.

4 Since the temperature sensing cylinder was attached to the upper side of the connecting member,
Even if the heating device is removed from the liquid tank and placed on another object such as a workbench, the temperature-sensitive cylinder and capillary tube will not be damaged by the corners or protrusions of the workbench.

5. Since the connecting member and thermosensor tube are arranged near the side wall of the liquid tank, chopsticks, a mesh net, etc. are unlikely to come into contact with the thermosensor tube or capillary tube during cooking, which may damage the thermosensor tube or capillary tube. This reduces the number of failures of the liquid temperature thermostat.

[Brief explanation of the drawing]

Figures 1 and 2 are perspective views showing the heater portion of a conventional electric fryer, Figure 3 is an exploded view of the electric fryer of the present invention, Figure 4 is a partially enlarged perspective view of the support, and Figure 5 is Partial enlarged view of the heater in Fig. 3, No. 6
The figures are a partially cutaway perspective view of the heating device shown in Fig. 3, Fig. 7 is an enlarged vertical sectional view of the heater tube, Fig. 8 is a diagram showing an example of the electric circuit of the electric fryer shown in Fig. 3, and Fig. 9 1 and 10 are a side view and a top view, respectively, of the electric fryer of the present invention. 1...Liquid tank, 2...Support, 3...Heater, 3
a... Non-heat generating part, 3b... Heat generating part, 4... Heating device, 5... Latch fitting, 6... Liquid temperature thermostat, 7...
Heater energizing lamp, 8... Handle, 9... Heater cover, 10... Net, 11... Electrical box, 12... Temperature sensing cylinder, 13... Connecting member, 14... Fixing member, 2
0... Fastener, 22... Protrusion, 24... Magnesia, 25... Non-heat generating member, 26... Heat generating member,
27...Capillary, A...Boundary between non-heat generating part and heat generating part, B...Bending part.

Claims (1)

[Claims for Utility Model Registration] (1) The heater 3 that heats the liquid in the tank has at least two non-heat generating parts 3a that do not generate heat,
The non-heat generating part 3a is immersed in the liquid in the tank, and
The connecting member 13 has a bent portion B that curves from the side wall to the bottom wall of the connecting member 13, and is mutually fixed to the heater portion of each non-heat generating portion 3a above the bent portion B.
An electric fryer characterized by having: and a temperature-sensitive cylinder 12 attached to a connecting member 13 to detect the temperature of the liquid in the tank. (2) The electric fryer according to claim 1, wherein the connecting member 13 is fixed in the vicinity of the bent portion B. (3) The electric fryer according to claim 1 or 2, wherein the temperature-sensitive tube 12 is attached to the upper side of the connecting member 13. (4) The electric fryer according to any one of claims 1 to 3, wherein the diameter of the temperature-sensitive cylinder 12 is smaller than the width of the connecting member 13.