JPH03269985A - Heater for washing machine - Google Patents

Abstract

PURPOSE:To prevent an overheating and to obtain a safe heating means by inserting a heater in a casing and filling up a heat medium solution in a filling space formed between the outer periphery of the heater and the inner surface of the casing. CONSTITUTION:In order to heat a washing solution 8 filled in a washing machine 5, a heater 10 inserted in a casing 1 is heated by feeding a current, the outer circumferential surface of the casing 1 is put into contact with the washing solution 8, while the heater 10 comes into contact with a heat medium solution in the casing 1 so as to heat the heat medium solution, and the heat of the heat medium solution heats the washing solution 8 through the casing 1. In such a way, an overheating is prevented, and safe heating operation can be carried out.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a heating heater for a washing machine that cleans objects to be cleaned, and is intended to prevent various problems caused by overheating in heaters used for steam cleaning, liquid cleaning, etc. 9 Conventional technology Conventional heating heaters for cleaning machines used for steam cleaning, liquid cleaning, etc. The heated heat transfer oil can be circulated by flowing through a pipe installed in contact with the cleaning liquid, or water can be heated with a wheeler to generate steam, and this steam can be circulated inside the vibrator. There is an indirect heating method in which the cleaning liquid is heated by circulating the cleaning liquid.

Although the direct heating method has the advantage of being simple and inexpensive, it has the disadvantage of being prone to overheating. When the surface of the heater rises above a certain temperature and overheats, some cleaning solvents may thermally decompose, producing chlorine gas, hydrochloric acid gas, etc., or degrading the solvent and rendering large amounts of solvent unusable. This results in corrosion of the object to be cleaned, which not only causes significant economic loss, but also causes air pollution and damage to the health of workers. Some of the overheating that causes such damage is often caused by dry heating, where the heating heater is heated without coming into contact with the cleaning liquid, but in cases where only a part of the heating heater protrudes from the cleaning liquid, direct heating methods are recommended. In this case, the heat sensor cannot detect only a part of the heater protruding, and the dry-heat prevention device often does not operate, resulting in overheating of the part protruding from the cleaning liquid. In addition, when scale detached from the object to be cleaned adheres to the surface of the heating heater, this adhered part overheats and the thermal sensor cannot detect the scale adhesion and prevents the thermal decomposition of the solvent. Become what arises.

Indirect heating methods are known as a method that can eliminate these drawbacks, but conventional methods require large-scale and complicated incidental equipment such as boilers, and are expensive, resulting in a heavy economic burden. It had

Problems to be Solved by the Invention The present invention attempts to solve the above-mentioned problems, and it is possible to use a simple heating method similar to a direct heating method without using large and complicated circulation pipes, boilers, or other auxiliary equipment. The aim is to obtain a safe heating means that overlaps and partially eliminates the heating mechanism.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention includes a heating heater inserted into a casing that is inserted into a washing machine and whose outer peripheral surface is brought into contact with the cleaning liquid, and the outer periphery of the heating heater and the inner periphery of the casing. This is done by filling the space between the heating medium and the surface with a heat transfer liquid.

Alternatively, a heat sensor may be inserted between the filling intervals to sense the temperature of the heat medium liquid and control the heating of the heater.

In addition, the casing penetrates the outer wall of the washer from the outside of the washer in a liquid-tight manner and is inserted into the casing.
The heater may also be able to be removed while the washer is filled with cleaning liquid.In the above-described configuration, in order to heat the cleaning liquid filled in the washer, it is necessary to insert it into the casing. When the heating heater in the casing is heated by electricity, the outer peripheral surface of the casing comes into contact with the cleaning liquid, and the heating heater also comes into contact with the heat transfer liquid inside the casing, heating the heat transfer liquid, so that the heat of the heat transfer liquid is transferred to the casing. The cleaning liquid is heated through the

Even if scale detached from the object to be cleaned adheres to the outer periphery of the casing in this heated state, the inside of the casing into which the heating heater is inserted is filled with heat transfer liquid, so this heat transfer liquid will circulate inside the casing. By averaging the temperature, it is possible to prevent only a part of the casing from becoming overheated. This overheat prevention effect can be particularly effective when cleaning a heavily contaminated object, such as when cleaning a screen with ink on it.

Furthermore, even if only a portion of the casing is exposed from the cleaning liquid, overheating of the exposed portion can be prevented by the convection of the heat transfer liquid. Furthermore, since the surface temperature does not increase as would be the case when a heating heater is inserted directly into the cleaning liquid, deterioration of the cleaning liquid can be prevented.

Furthermore, if a heat sensor is inserted between the filling intervals and the temperature of the heat medium liquid is sensed to control the heating of the heater, the outer peripheral temperature of the casing is averaged by the convection of the heat medium liquid. Enables reliable heat control of the heater with one sensor.

Furthermore, if the casing is inserted into the casing by penetrating the outer wall of the washer from the outside of the washer in a liquid-tight manner, it is possible to remove the heater while the washer is filled with cleaning liquid. It becomes possible to repair the heater without draining the cleaning liquid from the washer.

EXAMPLE Below, an example of the present invention will be described. (1) is a casing made of a material with good thermal conductivity in a cylindrical shape, and a plug (3) is fixed to the outer periphery of an opening (2) at one end. At the same time, by screwing the outer circumferential groove (4) of this plug (3) to the screw tube 7 formed on the outer circumferential wall (6) of the washer (5), it can be placed inside the washer (5) in a liquid-tight manner. The outer peripheral surface of the casing 1) is brought into contact with the cleaning liquid (8). A heating heater (10) is inserted into this casing (1), and a filling gap 11) formed between the outer periphery of this heating heater (10) and the inner peripheral surface of the casing (1) is heated. medium oil,
It is filled with a heat transfer liquid such as a low-melting metal. Further, this heat transfer liquid forms an inlet (12>) and an outlet (13) at the other end of the casing.

A thermal sensor (14) is inserted in the filling interval (11) to sense the temperature of the heat medium liquid and control the heating of the heater (10).

In addition, the casing <1> liquid-tightly penetrates the outer peripheral wall (6>) of the washer (5) from the outside of the washer (8) to the casing (
1), the heater (10) may be removed while the washer (5) is filled with the cleaning liquid.

In the structure as described above, in order to heat the cleaning liquid (8) filled in the washer (5), the casing 1 is heated.
) When the heating heater (10) inserted in the inside of the casing (1) is heated by electricity, the outer peripheral surface of the casing (1) comes into contact with the cleaning liquid, and the heating heater (10) comes into contact with the heat transfer liquid inside the casing (1). However, since the heat medium liquid is heated, the heat of this heat medium liquid heats the cleaning liquid (8) via the casing (1).

Even if steel detached from the object to be cleaned adheres to the outer periphery of the casing (1) in this heated state, the heater (10)
The filling interval (11) in the casing (1) into which the ), overheating can be prevented. This overheat prevention effect can be particularly significant when cleaning a highly contaminated object, such as when cleaning a screen with stains attached.

Further, even when only a part of the casing (1) is exposed from the cleaning liquid (8), only the exposed part is not particularly heated by the convection of the heat transfer liquid, and overheating can be prevented. Further, unlike when the heating heater (10) is directly inserted into the cleaning liquid, the surface temperature of the heating part does not increase, so deterioration of the cleaning liquid can be prevented.

Also, insert a heat sensor (14) in the filling interval (11),
If the heating of the heater (10) is controlled by sensing the temperature of the heat medium liquid, the outer temperature of the casing (1) is averaged by the convection of the heat medium liquid, and one heat sensor ( 14) enables reliable heating control of the heater (10).

Furthermore, if the casing (1) is inserted into the casing (1) by penetrating the outer wall of the washer (5) from the outside of the washer (5) in a fluid-tight manner, Cleaning liquid (
It is possible to remove the heating heater (10) while it is still filled with cleaning liquid (8) from the washer (8).
It becomes possible to repair the heating heater (lO) without having to remove it.

Further, in the above embodiment, the casing (1) is attached by screwing the outer circumferential groove (4> of the plug (3) to the threaded cylinder (7>) formed on the outer circumferential wall (6) of the washing machine <5>. Washing machine (5)
However, in other different embodiments, the casing (1) may be directly fixed to the outer circumferential wall (6) by welding, and in this case, the mechanism is smaller than in the previous embodiment. It has the advantage of simplifying the process. Moreover, the inlet (12) and the outlet (13) are not provided in the washer (5),
Provided outside the washer (5) to inject the heat transfer liquid from the outside;
It is also possible to enable discharge.

Effects of the Invention Since the present invention is configured as described above, even if scale is attached to the outer periphery of the casing in a heated state or a part of the casing is exposed from the cleaning liquid, the presence of the heat transfer liquid can be avoided. Since the temperature inside the casing is averaged, it is possible to obtain a safe heating method that eliminates overheating by using a simple i-keg similar to the direct heating method, without using large and complicated boilers or other incidental equipment. can.

Furthermore, since the surface temperature does not increase as would be the case when a heating heater is directly inserted into the cleaning liquid, deterioration of the cleaning liquid can be prevented.

[Brief explanation of drawings]

The drawing is a sectional view showing an embodiment of the present invention. (1)...Casing (5)... ・Washing machine (
6)... ・Outer peripheral wall (8)... Cleaning liquid (10
)... Heater (11)... Filling interval < 14
)... ・Heat sensor

Claims (3)

[Claims] (1) A heating heater is inserted into the casing that is inserted into the washer and its outer circumferential surface is brought into contact with the cleaning liquid, and the heating medium liquid is applied to the filling gap formed between the outer circumferential surface of the heating heater and the inner circumferential surface of the casing. A heating heater for washing machines characterized by being filled. (2) The heating heater for a washing machine according to claim 1, characterized in that a thermal sensor is inserted in the filling interval to sense the temperature of the heat medium liquid and control the heating of the heating heater. (3) The casing penetrates the outer peripheral wall of the washer from the outside of the washer in a fluid-tight manner and is inserted into the casing, making it possible to remove the heater while the washer is filled with cleaning liquid. The heating heater for a washing machine according to claim 1.