阅读说明：本技术 一种食品加工机的自动清洗方法 (Automatic cleaning method of food processing machine ) 是由 王旭宁 张文凡 于 2020-03-30 设计创作，主要内容包括：本发明涉及厨房小家电的清洗技术,特别是一种食品加工机的自动清洗方法,所述食品加工机包括制浆腔室、控制制浆腔室打开及关闭的排液组件和向制浆腔室内通入蒸汽的蒸汽产生装置,其特征在于：所述食品加工机的自动清洗是在排浆完成后进行的,且所述自动清洗方法至少包括：蒸汽清洗阶段：蒸汽产生装置向制浆腔室内通入蒸汽,蒸汽在制浆腔室腔壁上冷凝的清洗水对腔壁进行冲刷清洗；排出阶段：排液组件处于开启状态,将蒸汽冷凝的清洗水排出制浆腔室。采用上述食品加工机的自动清洗方法,清洗过程中,可以不用清洗水或者少用清洗水,通过蒸汽冷凝形成的清洗水来对制浆腔室的腔壁进行冲刷清洗。(The invention relates to a cleaning technology of small kitchen appliances, in particular to an automatic cleaning method of a food processor, wherein the food processor comprises a pulping chamber, a liquid discharge assembly for controlling the opening and closing of the pulping chamber and a steam generating device for introducing steam into the pulping chamber, and the automatic cleaning method is characterized in that: the automatic cleaning of the food processor is carried out after the slurry discharge is finished, and the automatic cleaning method at least comprises the following steps: a steam cleaning stage: the steam generating device is used for introducing steam into the pulping chamber, and washing water condensed on the wall of the pulping chamber by the steam scours and cleans the wall of the chamber; a discharging stage: the liquid discharge assembly is in an open state, and the washing water condensed by the steam is discharged out of the pulping chamber. By adopting the automatic cleaning method of the food processor, the cavity wall of the pulping cavity can be washed and cleaned by the cleaning water formed by steam condensation without cleaning water or with less cleaning water in the cleaning process.)

1. A method for automatically cleaning a food processor, the food processor comprising a pulping chamber, a liquid discharge assembly for controlling the opening and closing of the pulping chamber, and a steam generating device for introducing steam into the pulping chamber, the method comprising the steps of: the automatic cleaning of the food processor is carried out after the slurry discharge is finished, and the automatic cleaning method at least comprises the following steps:

a steam cleaning stage: the steam generating device is used for introducing steam into the pulping chamber, and washing water condensed on the wall of the pulping chamber by the steam scours and cleans the wall of the chamber;

a discharging stage: the liquid discharge assembly is in an open state, and the washing water condensed by the steam is discharged out of the pulping chamber.

2. The automatic cleaning method for a food processor as claimed in claim 1, wherein: during the steam washing phase, the temperature T1 in the pulping chamber is kept at a temperature not exceeding 100 ℃ while steam is fed into the pulping chamber.

3. The automatic cleaning method for a food processor as claimed in claim 2, wherein: the pulping chamber is of a non-closed structure, wherein T1 is 80-98 ℃;

or the pulping chamber is of a closed structure, wherein T1 is 90-100 ℃.

4. The automatic cleaning method for a food processor as claimed in claim 1, wherein: the automatic cleaning method also comprises an enhanced condensation stage for cooling the cavity wall of the pulping cavity.

5. The automatic cleaning method for a food processor as claimed in claim 4, wherein: and the enhanced condensation stage is arranged after the pulp discharge is finished and before the steam cleaning stage, and water is fed into the pulping chamber in the enhanced condensation stage so as to cool the chamber wall of the pulping chamber.

6. The automatic cleaning method for a food processor as claimed in claim 4, wherein: and in the stage of enhanced condensation, standing and cooling the pulping chamber with the introduced steam.

7. The automatic cleaning method for a food processor as claimed in claim 4, wherein: in the stage of enhanced condensation, water is fed into the pulping chamber while or after steam is introduced into the pulping chamber so as to cool the chamber wall of the pulping chamber;

or, the food processor also comprises a heat dissipation device for dissipating heat of the cavity wall of the pulping cavity, and in the stage of intensified condensation, the heat dissipation device cools the cavity wall of the pulping cavity when or after steam is introduced into the pulping cavity;

or a crushing blade for stirring materials is arranged in the pulping chamber, and in the stage of strengthening condensation, when or after steam is introduced into the pulping chamber, the crushing blade stirs the steam in the pulping chamber so as to cool the wall of the pulping chamber.

8. The automatic cleaning method for a food processor as claimed in claim 1, wherein: in the steam cleaning stage, the liquid discharge assembly is in a closed state;

alternatively, steam is continuously or intermittently introduced into the pulping chamber during the steam cleaning stage.

9. The automatic cleaning method for a food processor as claimed in claim 1, wherein: the pulping chamber is a closed cavity.

10. The automatic cleaning method for a food processor as defined in claim 9, wherein: in the steam cleaning stage, the steam pressure led into the pulping chamber is p1, the atmospheric pressure is p, wherein p1 is not more than 2 p; or in the steam cleaning stage, the time for introducing steam into the pulping chamber is t, wherein t is not more than 5 min.

Technical Field

The invention relates to a cleaning technology of small kitchen appliances, in particular to an automatic cleaning method of a food processor.

Background

When the existing soymilk machine capable of automatically discharging soymilk is used for preparing soymilk drinks, materials and water are added according to the proportion requirement generally, but in the actual use process, a consumer can add the materials and the water into the soymilk machine at will for simplicity and convenience, so that the situations that more materials are added and less water is added can occur, and after the soymilk machine finishes pulping, the soymilk is thicker and the residue content is more. In the process of automatically discharging the slurry, the flowing slurry is quickly discharged, and the slurry residue with poor fluidity cannot be completely discharged and still remains in the grinding cup of the soymilk machine. Therefore, water needs to be added into the soymilk grinder for a plurality of times to flush out the pulp, so that the water consumption is high, and the situation that the pulp is not completely discharged exists.

Meanwhile, the applicant filed application of inventions with application numbers "CN 201910481587.5" and "cn201910481588. x", which are named "a self-cleaning method of a food processing machine" and "an automatic cleaning method of a food processing machine", respectively, before this. It is disclosed in the above-mentioned patent application that food preparation machine in the cleaning process, water injection whipping earlier erodes crushing intracavity wall and soaks, utilizes steam to fumigate crushing intracavity wall again to in the softening residue, then in the washing stage, drive through crushing blade and wash water and wash crushing chamber and outwards discharge. In the above scheme, because be provided with the infiltration stage before steaming, under the effect of high temperature, steam can be better softens the residue, however, still need intake many times among the cleaning process to the whipping of utilizing crushing blade realizes washing away crushing intracavity wall, just can realize the residue sanitization, consequently, food preparation machine needs intake washing many times in the above-mentioned application, and, the use of washing water volume is also more.

Disclosure of Invention

The invention aims to provide an automatic cleaning method of a food processor, which can wash and clean the cavity wall of a pulping chamber by using cleaning water formed by steam condensation without using or using less cleaning water.

In order to achieve the purpose, the invention adopts the following technical scheme: a method for automatically cleaning a food processor, the food processor comprising a pulping chamber, a liquid discharge assembly for controlling the opening and closing of the pulping chamber, and a steam generating device for introducing steam into the pulping chamber, the method comprising the steps of: the automatic cleaning of the food processor is carried out after the slurry discharge is finished, and the automatic cleaning method at least comprises the following steps:

a steam cleaning stage: the steam generating device is used for introducing steam into the pulping chamber, and washing water condensed on the wall of the pulping chamber by the steam scours and cleans the wall of the chamber;

a discharging stage: the liquid discharge assembly is in an open state, and the washing water condensed by the steam is discharged out of the pulping chamber.

Further, in the steam washing stage, the temperature T1 in the pulping chamber is kept not exceeding 100 ℃ while introducing steam into the pulping chamber.

Further, the pulping chamber is of an unsealed structure, wherein T1 is 80-98 ℃;

or the pulping chamber is of a closed structure, wherein T1 is 90-100 ℃.

Further, the automatic cleaning method also comprises an enhanced condensation stage for cooling the cavity wall of the pulping chamber.

Furthermore, the reinforced condensation stage is arranged after the pulp discharge is finished and before the steam cleaning stage, and water is fed into the pulping chamber in the reinforced condensation stage so as to cool the chamber wall of the pulping chamber.

Further, in the stage of strengthening condensation, the pulping chamber with the introduced steam is subjected to standing cooling.

Further, in the stage of intensified condensation, water is fed into the pulping chamber while or after steam is introduced into the pulping chamber so as to cool the chamber wall of the pulping chamber;

or, the food processor also comprises a heat dissipation device for dissipating heat of the cavity wall of the pulping cavity, and in the stage of intensified condensation, the heat dissipation device cools the cavity wall of the pulping cavity when or after steam is introduced into the pulping cavity;

or a crushing blade for stirring materials is arranged in the pulping chamber, and in the stage of strengthening condensation, when or after steam is introduced into the pulping chamber, the crushing blade stirs the steam in the pulping chamber so as to cool the wall of the pulping chamber.

Further, in the steam cleaning stage, the liquid discharge assembly is in a closed state;

alternatively, steam is continuously or intermittently introduced into the pulping chamber during the steam cleaning stage.

Furthermore, the pulping chamber is a closed cavity.

Further, in the steam cleaning stage, the steam pressure led into the pulping chamber is p1, the atmospheric pressure is p, wherein p1 is less than or equal to 2 p;

or in the steam cleaning stage, the time for introducing steam into the pulping chamber is t, wherein t is not more than 5 min.

The automatic cleaning of the food processor of the invention is carried out after the discharge of the slurry is finished, and the automatic cleaning method at least comprises the following steps:

a steam cleaning stage: the steam generating device is used for introducing steam into the pulping chamber, and washing water condensed on the wall of the pulping chamber by the steam scours and cleans the wall of the chamber;

a discharging stage: the liquid discharge assembly is in an open state, and the washing water condensed by the steam is discharged out of the pulping chamber.

In the cleaning process, the cleaning method mainly utilizes the fact that a large amount of condensed water is generated when high-temperature steam meets the cavity wall of a cold pulping cavity, the condensed water continuously slides downwards along the cavity wall under the action of self gravity in the forming process, and the cavity wall is washed and cleaned in the sliding process. And after the steam cleaning for a period of time, the cavity wall of the pulping chamber can be well cleaned, compared with the existing food processor capable of automatically cleaning, the water consumption for cleaning is less, and even the cleaning can be finished without water entering the pulping chamber, namely the purpose of cleaning without cleaning water is realized. Meanwhile, in the cleaning process, because the steam has the temperature far exceeding 100 ℃, the steam has the functions of softening, dissolving, decomposing, evaporating, sterilizing and disinfecting food residues, stains, oil stains, mold and the like in the cavity wall while introducing the steam into the pulping cavity, so that the cleaning effect is better and the cleaning is cleaner compared with the existing food processor which is cleaned by water feeding and whipping.

Drawings

The invention will be further described with reference to the accompanying drawings in which:

FIG. 1 is a schematic diagram of a food processor according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a food processor according to an embodiment of the present invention.

Detailed Description

The first embodiment is as follows:

as shown in fig. 1, which is a food processor according to a first embodiment of the present invention, the food processor includes a machine body 1, a grinding cup 2 installed in the machine body 1, and a cup cover 3 covering the grinding cup 2, wherein a silicone plug 31 is installed on the cup cover 3, and the grinding cup 2 and the cup cover 3 enclose to form a non-closed pulping chamber. Meanwhile, a water tank 4 is installed on one side of the machine body 1, a heating device (not shown in the figure) for heating the water tank and generating steam is arranged in the water tank 4, a water inlet and steam inlet nozzle 21 for feeding water or steam into the crushing cup 2 is arranged on the wall of the crushing cup 2, and the water inlet and steam inlet nozzle 21 is communicated with the water tank 4 through a pipeline (not shown in the figure). Wherein the water tank 4 and the heating device form a steam generating device for introducing steam into the pulping chamber. In addition, a liquid outlet (not marked in the figure) is arranged at the bottom of the crushing cup 2, a liquid outlet assembly 5 is arranged at the liquid outlet, wherein the liquid outlet assembly 5 comprises a liquid outlet pipe 51, a pulp receiving cup 6 and a waste water box (not shown in the figure) are arranged below the liquid outlet pipe 51, and the waste water box is positioned in an installation cavity (not shown in the figure) of the machine body 1 and is arranged side by side with the pulp receiving cup 6. The drain pipe 51 of the present embodiment can be rotated between the slurry receiving cup 6 and the waste water box to perform slurry discharge and waste water discharge, respectively.

The working process of the food processor of the embodiment comprises the following steps:

1) a pulping stage: and crushing and heating the materials in the pulping chamber and water to prepare mature pulp.

2) And (3) a pulp discharging stage: and opening the liquid discharge assembly, and discharging the prepared cooked slurry into the slurry receiving cup.

3) A prewashing stage: and closing the liquid discharge assembly, feeding water into the pulping chamber to cool and prewash the pulping chamber, and discharging prewashed washing water to the wastewater box.

4) A steam cleaning stage: the liquid discharge assembly is in a closed state, steam is introduced into the pulping chamber by the steam generating device, and washing water condensed on the wall of the pulping chamber washes and cleans the wall of the chamber.

5) A discharging stage: and opening the liquid discharge assembly, and discharging the cleaning water condensed by the steam out of the pulping chamber to the wastewater box.

The food processor of the present embodiment has a function of automatic washing, and the automatic washing is performed after the completion of the discharge of the slurry. The food preparation machine of this embodiment is at the cleaning process, and the cavity wall that mainly utilizes high temperature steam to meet cold slurrying cavity can produce a large amount of comdenstions water, and the comdenstion water receives the effect of self gravity at the in-process that forms, can be continuous along the downward landing of cavity wall, at the in-process of landing, erodees the washing to the cavity wall. And after the steam cleaning for a period of time, the cavity wall of the pulping chamber can be well cleaned, compared with the existing food processor capable of automatically cleaning, the water consumption for cleaning is less, and even the cleaning can be finished without water entering the pulping chamber, namely the purpose of cleaning without cleaning water is realized. Meanwhile, in the cleaning process, because the steam has the temperature far exceeding 100 ℃, the steam has the functions of softening, dissolving, decomposing, evaporating, sterilizing and disinfecting food residues, stains, oil stains, mold and the like in the cavity wall while introducing the steam into the pulping cavity, so that the cleaning effect is better and the cleaning is cleaner compared with the existing food processor which is cleaned by water feeding and whipping.

For this embodiment, the temperature of the steam introduced into the pulping chamber during the steam cleaning stage is very high, typically exceeding 110 ℃, and when the steam encounters the cold pulping chamber, the cleaning water is rapidly condensed out to clean the chamber wall. The inventor finds that in the steam cleaning stage, when steam is introduced into the pulping chamber, a large amount of cleaning water can be condensed out to wash the chamber wall by keeping the temperature T1 in the pulping chamber not to exceed 100 ℃. For this embodiment, there are various methods for keeping the temperature in the pulping chamber not exceeding 100 ℃, for example, cold water is added into the pulping chamber to cool the chamber wall of the pulping chamber during steam cleaning, or the outer surface of the pulping chamber is cooled by blowing air, or the chamber wall of the pulping chamber is cooled by using a refrigerating sheet, and so on.

It should be noted that the speed and the amount of the washing water condensed by the liquefaction of the steam are mainly related to the temperature of the wall of the pulping chamber, and the lower the temperature of the wall of the pulping chamber, the faster the condensation of the steam and the larger the amount of the water. Therefore, in order to obtain more washing water condensed by steam, the temperature of the pulping chamber can be kept lower, and for the embodiment, as the pulping chamber is of an unsealed structure, when the steam is introduced into the pulping chamber, a part of the steam can also run out of the outside of the pulping chamber through the silica gel plug on the cup cover, so that the water quantity of the steam liquefaction and condensation is reduced. The inventor finds that, for the scheme of the embodiment, the temperature T1 of the center in the pulping chamber is kept to be not more than 98 ℃, and during the process of introducing steam, enough washing water subjected to liquefaction and condensation can be generated on the cup wall of the crushing cup and the inner wall of the cup cover, and the cavity wall can be washed clean by the amount of the washing water. In the steam cleaning stage of this embodiment, steam is continuously or intermittently introduced into the pulping chamber, and the temperature of the steam is very high, so that although the temperature T1 of the center in the pulping chamber is lower, more condensed water can be generated to wash the chamber wall, in the actual test process, the inventor finds that in the steam introducing process, it is very difficult to maintain the temperature T1 of the center in the pulping chamber to be lower than 80 ℃. For the present embodiment, the temperature T1 is controlled to 80-98 ℃, wherein it is preferable to control the temperature T1 at the center of the pulping chamber not to exceed 90 ℃.

It should be noted that, for this embodiment, during the automatic cleaning process, a separate enhanced condensation stage for cooling the cavity walls (including the inner cavity wall and the outer cavity wall) of the pulping chamber may also be provided. In this embodiment, the pre-washing stage after the discharging of the slurry and before the steam washing stage can be regarded as the enhanced condensing stage required for the automatic washing of the food processor. In the stage, due to the cooked slurry of the slurry which is just prepared, the temperature in the pulping chamber is still higher, at the moment, water is fed into the pulping chamber after the slurry discharge is finished, the temperature of the pulping chamber can be further reduced and cooled, and therefore more steam can be condensed out of cleaning water when meeting cold in the steam cleaning stage.

Meanwhile, it should be noted that, in the present embodiment, in the steam cleaning stage, the steam introduced into the pulping chamber by the steam generating device may be introduced continuously or intermittently. In this embodiment, in the steam cleaning process, the liquid discharge assembly is in a closed state, so that more steam can be stored in the pulping chamber for condensation, and more cleaning water can be generated to wash the chamber wall. Of course, in the steam cleaning process, the liquid discharge assembly can be in an open state, but when steam is introduced, a large amount of steam is discharged out of the pulping chamber through the liquid discharge assembly, so that a large amount of steam is wasted. In addition, in order to further improve the cleaning effect, the crushing blades can be started to whip the condensed cleaning water in the pulping chamber in the steam cleaning stage according to the requirement after the steam is completely condensed.

Example two:

fig. 2 is a schematic structural diagram of a second embodiment of the present invention. The difference between the present embodiment and the first embodiment is: in this embodiment, the bowl cover does not have bleeder vent and silica gel stopper, and the slurrying cavity that bowl cover and crushing cup enclose to close and form is the cavity of enclosed construction. And the food processor further comprises a heat sink (not shown) for dissipating heat from the pulping chamber. For the food processor of the present embodiment, it has the following working processes:

1) a pulping stage: and crushing the materials in the pulping chamber and water to prepare raw pulp.

2) And (3) a pulp discharging stage: and opening the liquid discharge assembly, and discharging the prepared raw slurry into the slurry receiving cup.

3) A steam cleaning stage: the liquid drainage component is in a closed state, steam is introduced into the pulping chamber by the steam generating device, and washing water condensed on the wall of the pulping chamber by the steam scours and washes pulp residues on the wall of the chamber.

4) And (3) an enhanced condensation stage: keeping the pulping chamber to stand and cool, and cooling the outer wall of the pulping chamber by the heat dissipation device.

5) A discharging stage: and (4) opening the liquid discharge assembly, and discharging the mixture of the cleaning water condensed by the steam and the pulp residue into the pulp receiving cup for blending.

6) And (3) a boiling stage: heating and boiling the serous fluid in the serous fluid cup until the serous fluid is boiled thoroughly.

With the food processor of the present embodiment, raw slurry can be prepared, and the food processor also has a function of automatic cleaning after the completion of slurry discharge. The principle of the automatic cleaning is the same as that of the first embodiment, and the detailed description is omitted here. It should be noted that, in the present embodiment, since the pulping chamber has a sealed structure, and the discharged pulp is raw pulp, and especially when the prepared raw pulp is thick raw pulp, when steam is introduced into the pulping chamber in the steam cleaning stage, the steam heats the juice remaining in the pulp residue at the same time, and therefore, a large amount of foam is generated in the sealed pulping chamber and wraps the pulp residue, thereby improving the fluidity of the pulp residue. Meanwhile, the washing water condensed on the cavity wall of the steam can wash the foam wrapping the pulp residue, so that the cavity wall of the pulping cavity is ensured to be washed clean. In addition, compared with the conventional food processor capable of automatically cleaning, the food processor of the embodiment does not need to be flushed with water for many times.

Meanwhile, for the food processor of the embodiment, after steam cleaning, condensed cleaning water and pulp residue can be discharged into the pulp receiving cup together, and since raw pulp residue is rich in nutrient components, the raw pulp residue is directly cleaned and discharged into a waste water box, which causes nutrient waste. In the cleaning method of the embodiment, the concentration of the condensed slag washing water is not greatly reduced due to the fact that the amount of the condensed slag washing water is not large, while the concentration of the raw slurry is remarkably reduced through cleaning water for multiple times in the prior art, so that nutrition is effectively reserved for consumers who like to drink thick slurry, and the concentration of the slurry is not reduced.

It should be noted that, since the more the flushed sludge will collect on the bottom wall of the pulping chamber, the steam cleaning and discharging operation can be performed repeatedly for this embodiment.

Also, for this embodiment, during the steam cleaning stage, the temperature T1 in the pulping chamber can be kept below 100 ℃ while the steam is introduced into the pulping chamber, so as to achieve rapid condensation of the introduced steam and obtain more cleaning water. It should be noted that, for the embodiment, since the pulping chamber is of a sealed structure, in order to maintain the pulping chamber at 100 ℃ or below, so as to allow the introduced steam to be rapidly condensed to form the washing water, the pulping chamber needs to be specially cooled during the steam washing process. Because the pulping chamber is of a closed structure, high-temperature steam cannot be rapidly diffused into the atmosphere while the steam is introduced, so that the control of the temperature T1 at the center in the pulping chamber to be kept at a very low temperature is very difficult to achieve. For this embodiment, the heat sink cools the outer cavity wall of the pulping chamber while steam is being introduced into the pulping chamber, but it is still difficult to control the T1 to be kept below 90 ℃. For the embodiment, the inventor finds that when the temperature T1 is controlled to be within 90-100 ℃, after the steam introduced into the pulping chamber is condensed into water, the pulp residue in the pulping chamber can still be washed clean, and the purpose of steam cleaning can still be met. Wherein it is preferable for the present embodiment to control T1 not to exceed 98 ℃.

It should be noted that, in this embodiment, after the steam cleaning stage, the enhanced condensation of the pulping chamber is to condense more cleaning water from the steam introduced into the pulping chamber, so as to flush the pulp residue on the wall of the pulping chamber. Of course, for the present embodiment, the way of enhanced condensation is not limited to the solution disclosed in the present embodiment, and there may be more enhanced condensation solutions, for example, only static cooling is performed on the pulping chamber into which steam is introduced. Or, the heat dissipation device is used for carrying out heat dissipation and cooling on the pulping chamber only after the steam cleaning stage is finished. Or after the steam cleaning stage is finished, water is fed into the pulping chamber to cool the pulping chamber. Or, after water is fed, the pulping chamber is cooled by beating of the crushing blade. Even in a state where water is not introduced, the pulping chamber is cooled only by beating steam with the crushing blade. Meanwhile, it should be noted that, for the embodiment, the intensive cooling stage is not limited to be started after the steam is introduced into the pulping chamber, and may be performed by introducing the steam into the pulping chamber and performing the intensive cooling operation at the same time.

In addition, it should be noted that the steam cleaning is performed in a closed pulping chamber through which steam is introduced. Therefore, the steam pressure introduced into the pulping chamber during the steam cleaning stage cannot be too high, so as to prevent the risk of explosion due to insufficient strength of the pulping chamber. For the embodiment, in order to ensure the safety, the steam pressure p1 which is led into the pulping chamber and the atmospheric pressure p have the relation of p1 ≦ 2 p. Meanwhile, in order to avoid the risk of excessive pressure, in this embodiment, the time t for introducing steam into the pulping chamber is also required to be not more than 5 min.

Because the raw slurry and the cleaning water of the condensed flushing slag after steam cleaning are both discharged into the slurry receiving cup, the food processor of the embodiment can not need a waste water box, and compared with the existing food processor, the food processor has fewer accessories, simpler structure and lower cost.

It is noted that for the food processor of the present invention, the steam generated by the steam generating device may be high purity steam. However, since part of the steam is immediately liquefied into mist or droplets while being ejected from the water inlet and steam inlet nozzle, the steam in this embodiment may be a mixed steam of steam and water.

The food processor of the invention can be a wall-breaking food processor with a lower motor, and can also be a frame-type food processor. It will be appreciated by those skilled in the art that the present invention includes, but is not limited to, those illustrated in the accompanying drawings and described in the foregoing detailed description. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.