Deep fryer with removable cuvette

IPC classes for russian patent Deep fryer with removable cuvette (RU 2192772):

A47J37/12 - Deep fat fryers, including apparatus specially adapted for frying fish

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(57) Abstract:

The invention concerns a device for frying, namely fryer with removable cuvette filled roasting agent and fry products. The device includes a housing, which provides a compartment for the cell, heating elements, placed on the bottom of the mentioned compartment, the adjusting unit having thermal communication with the cuvette and allows you to control the temperature of the cell, the unit overheating protection with thermal communication with the cuvette and to avoid increasing the temperature of the cell above the predetermined threshold security, the sensors of the cell. The adjusting unit may cause disconnection of the power supply circuit of the heating elements before work unit overheat protection, in the case when the cuvette contains roasting agent in a quantity smaller than a predetermined minimum number. This provides increased usability and simplify the design of the fryer. 12 C.p. f-crystals, 4 Il.

The invention relates to the vast field of technology, which includes a device for heating or frying designed for cooking foods, fried, in particular, in a dish with butter.

The invention relates in particular, but not exclusively, to electric deep fryer with removable cuvette designed for frying foods such as potatoes, meat or fish, and containing a sensor of the presence of the cell.

Art
Conventional electric fryer with removable cuvette used for many years. The model of the last generation contain, in particular, thermal insulation side walls that protect from burns when you touch them. However, cleaning these devices, despite having a removable cover, very uncomfortable. To clean the deep fryer with removable cuvette much easier, especially if the removable cuvette covered with a layer of non-stick material such as PTFE. At the same time, these units are often expensive and complex. In accordance with the safety standards, these units should be equipped with devices that prevent their use in any emergency situations, such as the absence of the cell or insufficient kolichestvennoe for to disable the power supply in the case, when the cuvette is not sufficiently charged, or when it is absent. In both cases the idea is to ensure your own safety and to prevent damage to the unit. This security device contains sensors that, on the one hand, to determine that the cell is not sufficiently charged, and in this case, to break the power supply circuit of the heating unit, on the other hand, to determine that the fullness of the cell is such that its weight has reached a minimum predetermined value, and in this case, to close the power supply circuit of the heating unit, and means designed to close or break the power supply circuit of the heating unit depending on whether the removable cuvette in the body of the unit.

This device, of course, helps to protect the user from dangerous situations that may occur when turning on the heating unit when the unit is not ready for normal operation. This device, in particular, avoids overheating when heated blank cell, which can lead to a blown fuse in the unit overheat protection.

However, this device must consist of a large to DTIE cuvette, lack or insufficient amount of oil in a ditch. Accounting for the weight of the cell when granting permission to switch on the unit entails the use of standard parts. Therefore, this device is complicated and expensive.

The objective of the invention is to develop a deep fryers, which resolves the above-mentioned disadvantages, which is practical and convenient in use, and in designs where the number of complex parts and components is minimized.

This object is achieved by the creation of a deep fryer with removable cuvette, which is placed in roasting agent and fry products, comprising a housing, which provides a compartment for the cell, heating elements, located at the bottom of these compartments, the adjusting unit, which is in thermal contact with the cell and allows you to control the temperature of the cell, the unit overheating protection with thermal contact with the cell and to prevent a temperature rise above a predetermined threshold, the sensor of the presence of the cell, characterized in that the adjusting unit may disconnect the supply circuit of the heating elements before how will the block protect against overheating in case the level roasting and the first and the easy-to-use unit. In fact, protection against overheating, usually used in fryers, are fusible links, collapsing under overload conditions. In this case, the user will not be able to re-enable the unit. Characteristics of the unit according to the invention is such that the user does not have to pay to repair your unit if it is operated with an insufficient amount of fat or if you have included it, not pouring grease into the cell. These performance characteristics allow to use a very simple system of sensors of the cell, since the only taken into account the argument is the correct position of the cell. This is a simplification of the concept can be simplified and the design of the unit. In addition, this unit is easy to clean thanks to the release of the cell, which can be washed manually pulled out, or even put it in the dishwasher.

The advantage of one embodiment of the invention is that the adjusting unit mounted on the wall of the compartment and comprises at least one contact element, designed to provide thermal contact between the adjusting unit and the cuvette placed in the compartment in the normal position, and the name is ptx2">

Best of all, if the contact element is mounted on the same Board, which is equipped with an adjusting unit, and the card is movable relative to the body.

It is also necessary that the contact element had constant mechanical contact with the wall of the cell, located in a compartment in the normal position.

Direct thermal communication via heat conduction between the hot cell and control unit provides the best control characteristics.

It is necessary that the means of fixing boards were isolated from the contact element and ensure reliable contact with the cuvette.

The use of such cards allow you to place the adjusting block at a fixed distance from the cell, regardless of its actual size, depending on tolerances for processing, and therefore not dependent on the relative position of the wall called the cell and the casing wall, which strengthened the control unit, as well as from thermal expansion of the cell during operation of the unit. It also allows you to ensure good contact of the contact element with the cuvette at any angle between them. Therefore, thermal nature of the mounting does not require any additional manipulation.

In accordance with a preferred variant of the invention the present sensor cell is a mechanical transmission, interacting with the unit open a power circuit of the heating elements and mounted in such a way that it is driven by the cell when it is in the working position, and, if the cuvette is installed correctly named the power supply circuit of the heating elements is closed.

The concept of the adjustment system makes it possible to prevent damage to the unit in case of occurrence of emergency situations, such as its inclusion with insufficient fat in a ditch or when its full absence. The only thing to watch is that the cuvette is properly inserted in the housing.

Brief description of drawings
The invention will become clearer after considering variants of its execution, provided solely as an illustration, in the accompanying drawings, in which:
Fig. 1 is a cross-section of the unit where the electrical connections are not shown,
Fig. 2 is a partial view of the cross-section of the unit where presented in detail a preferred variant of the mounting of the adjusting unit is pus, on which the adjusting block is represented schematically,
Fig. 4 is a partial view of a longitudinal section of the unit, which presents in detail the preferred option of mounting the sensor to the availability of the cell.

The preferred embodiment of the invention
The deep fryer shown in Fig. 1, includes a housing 1 containing compartment 2, a removable cell 3 that is installed in slot 2, the heating elements 4 located at the bottom of the compartment 2, the adjusting unit 5 having thermal contact with the cuvette 3, block overheat protection 6 having thermal contact with the cuvette 3, the presence sensor 7 cell 3, preferably the cover 30, provided with a sealing gasket 31.

The heating unit 4 may consist, for example, one armored heating element, the advantage of which is its cheapness and ease of adjustment. In one embodiment, the design of the heating unit 4 may consist of several items of this type.

The bottom of the cuvette 3 preferably has recesses 23, the shape of which conforms to the shape of the heating elements 4, so that when the correct position of the cell in case it touches the heating elements 4. This position allows the catch phrase. It also allows you to ensure the correct installation of the cell 3 in the case if, for example, cell 3 has the shape of a parallelepiped, and the bottom of the cuvette 3 asymmetrically. The user will be forced to deploy cell 3 by 180 degrees when it is installed in the machine, when you see that in the initial position, the shape of the bottom cell 3 does not coincide with the shape of the heating elements.

Preferably, the adjusting unit 5 and unit overheat protection 6 located opposite the side wall 17 of the cell 3. This arrangement frees up space under the cuvette 3 for placement of the heating elements 4 and thereby to provide uniform heating of the cell 3. The adjusting unit 5 preferably should be a bimetallic thermal relay 32, such as shown in Fig. 2; you can also apply and electronic temperature control. Preferably, named the adjusting unit 5 is fastened on the circuit Board 16 and pressed against the side wall 17 of the cell 3 by a coupling element (contact element) 10. Preferably, the card 16 is located opposite the Windows 8 cut in the inner wall 27 of the housing 1. Named inner wall 27 preferably should be made of metal.

Contact e screw is turned to a ditch, he passes through the body of the heat relay and its protruding end has a clamping nut 34, as shown in Fig. 2. In addition, the circuit Board 16 mounted position sensor 11 that is designed to ensure reproducible contact of the contact element 10 with the cuvette 3 taking into account manufacturing tolerances. This position sensor 11 is preferably formed by two contacts 12A and 12b made, as seen in Fig. 3, logging. Preferably, the height of both contacts 12A and 12b was the same as the height of the contact element 10, so that the card 16 remained parallel to the side wall 17 of the cell 3.

The distance between the contacts 12A and 12b must be greater than the diameter of the contact element 10, which represents, for example, flat head screw 33, which allows to ensure a good fit of the contact element 10 to the side wall 17 of the cell 3, and thus to ensure good thermal contact between the cell 3 and the adjusting unit 5. Board 16 is held opposite the side wall 17 of the cell 3 with clip, made of hard metal wire 13. Wire 13 presses the card 16 preferably at the level of two cuttings 15. The wire 13 is fixed on the inner stance 27, in which are sealed the ends of the named wire 13.

The unit overheating protection 6 represents preferably fuse box should touch the side wall 17 of the cell 3. Named block 6 is held by the elastic bracket 35 fixed in the hole 36 of the inner wall 27 of the housing 1.

The presence sensor 7 cell 3 represents the mechanical transmission 18, which interacts with the block 19 disconnection of the power supply circuit of the heating elements 4, called the block opening 19 can represent, for example, the limit switch. Mechanical transmission 18, for example, consists of a rod 20, a sliding within the sleeve 21 and cooperating with a return spring 22.

It is desirable that the Board 24 of the cell 3 in its upper part was at least partially folded. This reduces the contact surface of the Board 24 with a mechanical transmission 18. Preferably, the mechanical transmission 18 has been protected by a cover 26, the groove 28. The groove 28 is designed so that the Board 24 of the cell 3 that is properly installed in the compartment 2, presses the said mechanical transmission 18. In an embodiment shown in Fig. 4, the Board 24 of the cell 3 affects the head 25 sarinana design allows you to avoid situations when the user accidentally or even intentionally affects the node 18, causing the closure of the power supply circuit of the heating elements 4 and, consequently, their heating, for example, when installing the cuvette 3 or other manipulation, and risking getting burned, if his arm will fall into the compartment 2 after cell 3 was removed therefrom.

This device also allows you to avoid the impact of seal 31 of the cover 30 on the mechanical transmission 18 when called cover 30 is closed in the absence of the compartment 2 cell 3.

Removable cuvette 3 is designed to be filled with the roasting of the substance 9, such as vegetable oil, animal fat, lard, etc., and fry foods.

The unit according to the invention operates as follows.

When removable cuvette 3 is installed in slot 2, the wire 13 and the elastic bracket 35 are pressed respectively contact element 10 of the adjusting unit 5 and unit overheat protection 6 to the walls of the named cell 3.

Cuvette 3 is installed correctly, if the heating elements 4 into the top recess 23 in the bottom of the named cell.

If cuvette 3 is installed correctly, the edge of the boat 24 actuates the mechanism is of istue to block the opening 19 of the power supply circuit of the heating elements 4, resulting in the above mentioned circuit is closed. The unit is ready for operation.

In case of improper installation of the cell 3, for example, if the cuvette 3 is rotated 180 degrees relative to its normal position, the heating elements 4 are not included in the recesses 23, and cuvette 3 is raised. Edge bead 24 is unable to affect the transmission 18 by pressing, for example, on the head 25 of the stud 20, and the power disconnection circuit 19 remains in the open position. The unit can not operate.

In the absence of the cell 3 mechanical transmission 18 nothing operates, and the power disconnection circuit 19 is in open condition. The unit cannot be operated. In addition, the presence of the cap 26 prevents actuation of the mechanical transmission 18 under the action of the seal 31 of the cover 30 of the cell 3 when it is closed.

If cuvette 3 is properly inserted into the compartment, but not filled roasting agent 9 such as vegetable oil, animal fat, melted fat or any other fat suitable for frying, or if the amount of fat is less than the required minimum, i.e., if there is a danger of overheating, the control unit closes the supply circuit of the heating elements 4 before work unit sasagawa type, the named property of this construction prevents the fusible insert from destruction. The user does not have to give the unit in for repair due to the fact that he exploited him with not enough fat or turned on the unit, not by filling a cuvette pre-fat.

The invention is not limited to the above examples of its implementation, it involves numerous modifications and improvements.

In particular, it is possible to suggest that the adjusting unit 5 and unit overheat protection 6 fastened on one side wall 17 of the unit.

You can also consider a variant in which the wire 13, the holding cost 16 to the side wall 17, would be not one, and consisted of two or more parts. You can also stipulate that payments 16 fastened on the housing, and only the contact element 10 remained active and was able to pull over to a ditch. In addition, you can provide that payment 16 itself served as a contact element for heat exchange between the cuvette 3 and the adjusting unit 5, to which it must be made of a material that conducts heat well, such as aluminum or copper alloy.

You can also provide that fur cuvette 24 3 directly influenced the mechanical part of the unit open circuit 19, why it should be made of a material capable of withstanding the temperature to which the heated Board 24 named cuvette 3.

Possible industrial applications
The invention will find application in the field of production units for heating or frying products, in particular for frying foods in oil ditch.

1. Device for frying, which is a deep fryer with removable cuvette (3), fill roasting agent (9) and fry products, comprising a housing (1), which provides a compartment (2) for the cell (3), heating elements (4), placed on the bottom named compartment (2), the adjusting unit (5), thermally associated with the cuvette (3) and allows you to control the temperature of the cell (3), the unit overheating protection (6), thermally associated with the cuvette (3) and to avoid increasing the temperature of the cell (3) in excess of the predetermined threshold security, and sensors (7) the presence of the cell (3), characterized in that the adjusting unit (5) is arranged to open a power circuit of the heating elements (4) before the work unit (6) overheating protection, in the case when the cuvette (3) contains roasting agent (9) in number, smaller the beforehand set is) installed in the wall of the compartment (2) and has at least one contact element (10) to provide thermal communication between the adjusting unit (5) and the cuvette (3), installed in operating position in the compartment (2) and named contact element is mounted so that it is movable with the ability to move beyond the walls of the compartment (2) in the direction of the wall of the cell (3).

3. The device according to p. 2, characterized in that the contact element (10) mounted on the circuit Board (16), bearing on himself the adjusting unit (5) and movable relative to the housing (1).

4. Device according to one of paragraphs. 2, 3, characterized in that the contact element (10) is placed so as to make mechanical contact with the cuvette (3) when it is in operating position.

5. Device according to one of paragraphs. 3, 4, characterized in that the card (16) contains a position sensor (11) of the cell (3), remote from the contact element (10) and serves to guarantee the restoration of contact between the contact element (10) and the cuvette (3).

6. The device under item 5, characterized in that the position sensor (11) represents the two contacts (12A, 12b).

7. Device according to one of paragraphs. 3-6, characterized in that the card (16) is held in front of the cell (3), occupying a working position, due to mounting, which are quite hard metal wire (13), which, with one of peretse logging (15) in the circuit Board (16).

8. Device according to one of paragraphs. 1-7, characterized in that the sensor (7) of the cell (3) is a mechanical transmission (18) interacting with the block (19) open circuit of the heating elements (4) in such a way that the aforementioned sensor is driven by a cuvette (3) when it is installed in its working position, and if it is installed correctly, the position sensor (7) closes called the power supply circuit of the heating elements (4).

9. The device under item 8, characterized in that the outer edge (24) side of the cell (3) at least partially bent so as to affect the sensor (7) the availability of the cell, in the case when the cuvette is installed correctly.

10. The device according to p. 9, characterized in that the mechanical transmission (18) is closed by a cover (26), in which there is a groove (28).

11. The device according to p. 10, characterized in that the width of the groove (28) is slightly greater than the thickness of the outer edge (24) side of the cell (3).

12. Device according to one of paragraphs. 1-11, characterized in that the outer side of the bottom of the cell (3) includes recesses (23), the shape of which follows the shape of the heating elements (4).

13. Device according to one of paragraphs. 1-12, characterized in that the adjusting unit (5) and/or the block protection