CN217137707U - Multifunctional food processor - Google Patents

Abstract

The utility model relates to the field of food processing machines, and discloses a multifunctional food processing machine, which comprises a main machine and a stirring cup, wherein the stirring cup is shaped into a processing cavity, the multifunctional food processing machine also comprises an extraction device, and the extraction device is arranged above a stirring knife; the extraction device can divide the processing cavity to form a first cavity which is arranged in the extraction device and used for containing materials and a second cavity which is arranged between the stirring cup and the extraction device and used for storing liquid, and the extraction device is provided with a filter hole which is communicated with the first cavity and the second cavity; the host computer is equipped with air pump assembly, and air pump assembly is equipped with the inlet port in order to admit air to the second cavity, and the inlet port is located the below of filtration pore in longitudinal direction, and when air pump assembly inflation state, the liquid volume that enters into first cavity from the second cavity is not more than the space volume above the second cavity liquid level before the inflation procedure starts. The utility model provides a multi-functional food preparation machine when can realizing the function of squeezing juice, slurrying, can also make tea drink, and extract tea efficiency height.

Description

Multifunctional food processor

Technical Field

The utility model relates to a food preparation machine field, concretely relates to multi-functional food preparation machine.

Background

Food processors are becoming more and more versatile, and a food processor capable of extracting tea also comes into the field of vision of users on the basis of juicing, pulping and dry-grinding. The traditional method for making tea mainly comprises the steps of directly putting tea into a tea cup and brewing with boiled water. On one hand, the brewing mode is difficult to maintain the water temperature and fast to reduce, and on the other hand, the effective substances in the tea leaves are slowly dissolved and the extraction efficiency is low due to the fact that the tea leaves are in a static state in the water. Chinese patent No. CN209091012U discloses a multifunctional food processor, which satisfies the increasing demands of consumers for food processors by adding a tea-extracting rack structure to hold tea leaves, fruit tea, etc. for brewing based on the original food processor. But also faces the problem of low tea extraction efficiency.

Disclosure of Invention

In order to solve one or more technical problem among the prior art, or at least provide a profitable selection, the utility model provides a multi-functional food processor can also make the tea drink when can realizing the function of squeezing the juice, slurrying, and extract tea efficiency height.

The utility model provides a multifunctional food processor, which comprises a main machine and a stirring cup, wherein the stirring cup forms a processing cavity, a stirring knife is arranged in the processing cavity, a motor capable of driving the stirring knife is arranged in the main machine, the multifunctional food processor also comprises an extraction device, and the extraction device is arranged above the stirring knife; the extraction device can divide the processing cavity to form a first cavity which is arranged in the extraction device and used for containing materials and a second cavity which is arranged between the stirring cup and the extraction device and used for storing liquid, the extraction device is provided with a filter hole for communicating the first cavity with the second cavity, and when the liquid level is higher than the filter hole, the second cavity forms a closed cavity; the host computer is equipped with air pump assembly, and air pump assembly is equipped with the inlet port in order to can admit air to the second cavity, and the inlet port is located the below of filtration pore in longitudinal direction, and when air pump assembly inflation state, the liquid volume that enters into the second cavity from first cavity is not more than before the inflation procedure starts the space volume of second cavity liquid level top.

The utility model discloses a food preparation machine, on current food preparation machine's basis, increase extraction element in the stirring cup and be used for the splendid attire to treat the extract, treat that the extract can be tealeaves, fruit tea etc.. The extraction device separates the processing chamber of stirring cup and forms the first cavity in the extraction device and the second cavity between extraction device and the stirring cup, carries out the exchange circulation of liquid through the filtration pore between first cavity and the second cavity. Further, an air pump assembly is added in the main machine. When the food processor executes the extraction program, in the primary extraction process, the air pump generates air and adds the air into the second chamber to change the air pressure in the second chamber, and under the condition that the pressure in the second chamber is gradually higher than that of the first chamber, the liquid in the second chamber flows into the first chamber under the action of differential pressure, so that the liquid level in the first chamber is raised. After the liquid level is lifted to a certain height, the secondary extraction process is carried out, the air pump assembly stops working intermittently, air is not supplied to the second chamber any more, air is exhausted and released from the second chamber, the pressure of the second chamber is reduced, under the condition that the pressure in the second chamber is gradually smaller than that of the first chamber, liquid in the first chamber flows into the second chamber under the action of pressure difference, and the liquid level in the first chamber begins to fall back. The primary extraction process and the secondary extraction process are circularly reciprocated, the liquid level is continuously lifted and falls back, and the liquid exchange in the first cavity and the second cavity is carried out, so that the extraction efficiency is improved. In the primary extraction procedure, the liquid amount entering the first chamber from the second chamber is not larger than the space volume above the liquid level of the first chamber before the aeration procedure, so that the liquid is ensured not to fill the first chamber and overflow along the cup cover.

In a preferred implementation of the multifunctional food processor, the multifunctional food processor further comprises an air guide groove, wherein the air guide groove is provided with an air inlet end and an air outlet end, the air inlet end is communicated with the air inlet hole, and the air outlet end is communicated with the second cavity.

The air pump assembly and the liquid in the second chamber can be separated by arranging the air guide groove, so that the gas is prevented from being directly introduced into the second chamber, bubbles in the liquid in the second chamber can be reduced, and the sensory experience of a user is improved; on the other hand, the liquid can be prevented from flowing backwards into the air pump along the air inlet hole to influence the normal work of the air pump.

In a preferred implementation of the multifunctional food processor, the air guide groove is arranged on the extraction device, and when the extraction device is arranged in the stirring cup, the air inlet end of the air guide groove surrounds the air inlet hole; or the air guide groove is arranged on the stirring cup.

The gas guide groove of the food processor can be arranged on the extraction device and is integrated with the extraction device, when the extraction device is not used and taken out, the volume in the processing cavity is not influenced, and the food material stirring of the stirring knife is not hindered; when the air guide groove is arranged on the stirring cup and integrated with the stirring cup, the structure of the extraction device can be simplified, and the tightness between the air inlet of the air pump and the air inlet end of the air guide groove does not need to be considered.

In a preferred implementation mode of the multifunctional food processor, a plurality of filter holes are arranged and distributed at the bottom end of the extraction device, the area ratio of the filter holes to the bottom end of the extraction device is A, and A is not less than 1/20 and not more than 1/3.

Because tealeaves waits for the extract can subside in extraction device's bottom, locates extraction device's bottom with the filtration pore, and the liquid exchange in-process can drive the material motion, improves extraction efficiency. The filter holes are arranged in a plurality of ways, the problem that liquid exchange is blocked by blocking of a single filter hole can be avoided, the filter holes are properly arranged relative to the area of the bottom end of the extraction device, and the liquid exchange efficiency can be guaranteed.

In a preferred implementation of the multi-functional food processor, the air pump assembly comprises an air pump and an air displacement member which work alternately, the air pump being capable of pressurizing the second chamber by air so as to create a negative pressure difference between the first chamber relative to the second chamber, the liquid flowing through the filter aperture towards the first chamber, and the air displacement member being capable of depressurizing the second chamber by air so as to create a positive pressure difference between the first chamber relative to the second chamber, the liquid flowing through the filter aperture towards the second chamber.

The utility model discloses a food preparation machine, air pump subassembly set up the air pump and to the air entrainment of second cavity to setting up the air discharge member and exhausting to the second cavity, the air pump and the air discharge member of alternative work make first cavity and second cavity produce pressure differential, and under pressure differential's effect, liquid passes through the filtration pore and flows between first cavity and second cavity, improves extraction efficiency. The lifting frequency of the liquid level can be adjusted by changing the working frequency of the air pump and the air exhaust piece, and the extraction efficiency is changed, so that the device is suitable for different extracts to be extracted.

In a preferred implementation of the multifunctional food processor, the food processor further comprises a pressure relief member, the pressure relief member comprises a pressure relief hole communicating the first chamber with the outside air, and the inflation volume of the air pump is greater than the displacement volume of the pressure relief hole;

or the food processor also comprises a pressure relief piece, and the pressure relief piece comprises a pressure relief hole for communicating the first chamber and the outside air and a pressure relief valve for opening and closing the pressure relief hole.

When liquid level risees gradually in first cavity, compress original gas space for the gas pressure in the first cavity increases gradually, and when first cavity internal pressure increased to a definite value, the intercommunication that pressure release piece can realize the cup inside and outside air carries out the pressure release, reduces the potential safety hazard of food preparation machine when using, guarantees the security of using.

In a preferred implementation mode of the multifunctional food processor, the air pump and the motor are arranged in the main machine side by side, the air inlet hole is arranged on the bottom wall of the processing cavity, and the air inlet hole is provided with a one-way air inlet structure.

With the mode that air pump and motor set up side by side, the space of make full use of host computer, the structure is compacter, is favorable to realizing the miniaturization of host computer, directly installs the air pump export in the cup diapire, need not set up the air cock of connecting the air pump such as air duct, and simple structure is reliable. The one-way air inlet structure is arranged, so that liquid in the second chamber can not flow backwards, and the air pump is damaged by water inlet.

In a preferred realization of the multifunctional food processor, the extraction device is detachably arranged on the stirring cup, the volume of the first chamber is V, the rated maximum allowable space volume below the liquid level of the first chamber is V1, the volume of the second chamber is V2, and V is more than or equal to V1+ V2;

or the ratio of the volume V of the first chamber to the volume V2 of the second chamber is B, and B is more than or equal to 2 and less than or equal to 5.

The utility model discloses a food preparation machine possesses multiple functions such as tea-making, slurrying, under the condition of non-tea-making, can take off extraction device so that carry out other processes, and extraction device takes off the back, eats the material and can directly drop into the processing intracavity, improves the contact probability of eating material and stirring sword. The detachable installation mode of the extraction device is convenient for cleaning the stirring cup and the tea extraction device. In the primary extraction procedure, when the air pump starts to work, the liquid in the second chamber enters the first chamber through the filter hole until the liquid level in the second chamber is level with the filter hole, and the residual liquid in the second chamber cannot enter the first chamber. Because the sum of the volume of the space below the rated maximum allowable liquid level of the first chamber and the volume of the second chamber is smaller than the volume of the first chamber, at the moment, the liquid in the first chamber still does not reach the maximum volume value, namely the liquid level in the first chamber is lower than the opening of the extraction device, and the liquid can be ensured not to overflow.

In a preferred implementation mode of the multifunctional food processor, the stirring cup comprises a cup body and a cup cover covering the cup body, a limit step is arranged on the inner wall of a cup opening of the cup body, the peripheral edge of the extraction device is lapped on the limit step, the cup cover and the limit step can clamp and fix the peripheral edge of the extraction device, and a sealing structure is arranged between the limit step and the peripheral edge of the extraction device.

The stirring cup is provided with a cup cover for sealing the processing cavity, and the cup cover and the cup body can be used for fixing the extraction device. When the cup cover covers the cup body, the extraction device is tightly pressed on the limiting step, so that the limiting step and the cup cover clamp and fix the peripheral edge of the extraction device, and the stable state of the extraction device in the stirring cup is ensured. Seal structure can the sealed bowl cover of butt simultaneously, the clearance between extraction device and bowl cover and the cup, can enough avoid the gas exchange in first cavity and the second cavity, forms the relative sealed state of second cavity, when admitting air to the second cavity and pressurizeing, avoids gas to get into first cavity along the clearance between the two, and can't realize the lift of liquid level in the effect of pressure differential, also can avoid liquid to overflow along the clearance between bowl cover and the cup simultaneously.

In a preferred embodiment of the multifunctional food processor, the ratio of the equivalent diameter of the extraction device to the equivalent diameter of the processing chamber is D, D being 0.3-0.8. When the equivalent diameter of the extraction device is too small relative to the equivalent diameter of the processing cavity, the containing space of the extraction device is too small, and the quantity of contained materials is small. When the equivalent diameter of the extraction device is too large relative to the equivalent diameter of the processing cavity, the space of the second chamber outside the extraction device is too small, which is not beneficial to liquid exchange, the extraction efficiency is low, and the extraction device is not convenient to take and place.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

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

Fig. 2 is a schematic structural view of a stirring cup according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of an extraction device according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of the food processor in an operating state of the air pump according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a food processor in an operating state of an air pump according to an embodiment of the present invention.

Fig. 6 is an enlarged view of a portion a in fig. 1.

Description of reference numerals:

1-a host; 11-a motor; 12-an air pump assembly; 121-an air pump; 122-one-way air intake structure;

2-a stirring cup; 21-cup body; 211-a limit step; 22-a cup cover; 221-a sealing ring; 23-stirring a knife; 24-a processing cavity; 241-a first chamber; 242-a second chamber; 25-air intake; 26-a bleeder; 261-pressure relief hole; 262-a pressure relief valve;

3-an extraction device; 31-filtration pores; 32-a gas guiding groove; 321-an air inlet end; 322-air outlet end.

Detailed Description

In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.

It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

In addition, in the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. However, the direct connection means that the two bodies are not connected through a transition structure, but connected through a connection structure to form a whole. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

First, the technical concept of the present invention will be explained. On the basis of the existing food processor, an extraction device is additionally arranged in a stirring cup and is used for containing an extract to be extracted, and the extract to be extracted can be tea leaves, fruit tea and the like. The extraction device separates the processing chamber of stirring cup and forms the first cavity in the extraction device and the second cavity between extraction device and the stirring cup, carries out the exchange circulation of liquid through the filtration pore between first cavity and the second cavity. Before the tea extraction process is started, water is added into the stirring cup, and when the liquid level is higher than the height of the filter hole, the filter hole between the first chamber and the second chamber is sealed by liquid, namely, gas exchange does not exist in the first chamber and the second chamber. When the air pump assembly is not in operation, the liquid levels in the first chamber and the second chamber are in equilibrium. When the food processor executes the extraction program, in one extraction process, and when the air pump assembly works, air enters the second chamber along the air inlet hole, and under the condition that the pressure in the second chamber is gradually higher than that in the first chamber, liquid in the second chamber flows into the first chamber under the action of pressure difference, so that the liquid level in the first chamber is raised. After the liquid level is lifted to a certain height, the secondary extraction process is carried out, the air pump assembly stops working intermittently, air is not supplied to the second chamber any more, and air is exhausted from the second chamber, so that the pressure of the second chamber is reduced, under the condition that the pressure in the second chamber is gradually smaller than that of the first chamber, liquid in the first chamber flows into the second chamber under the action of pressure difference, and the liquid level in the first chamber begins to fall back. The primary extraction process and the secondary extraction process are circularly reciprocated, the liquid level is continuously lifted and falls back, and the liquid exchange in the first cavity and the second cavity is carried out, so that the extraction efficiency is improved.

The above-mentioned is the illustration only, and in fact, the technical scheme of the utility model not only can be applicable to portable food preparation machine, can also be applied to ordinary domestic food preparation machine, not only can realize making tea, fruit tea, can also be applied to other extracts, for example add cold water and carry out cold extraction coffee etc. and all accord with the technical idea disclosed by the utility model.

The specific scheme is as follows:

the utility model provides a multi-functional food preparation machine, as shown in fig. 1-5, in an embodiment, food preparation machine includes host computer 1 and stirring cup 2, stirring cup 2 is installed on host computer 1, stirring cup 2 forms process chamber 24, be equipped with stirring sword 23 in the process chamber 24, be equipped with the motor 11 that can drive stirring sword 23 in the host computer 1, wherein, motor 11 is fixed in the diapire of stirring cup 2 through the fastener, stirring sword 23 is fixed in on the 11 output shafts of motor, food preparation machine still includes extraction element 3, extraction element 3 arranges the top of stirring sword 23 in, the distance between the diapire of extraction element 3 and the wing of stirring sword 23 should be greater than 10mm at least, avoid forming the interference. The extraction device 3 can separate the processing cavity 24 and form a first cavity 241 arranged in the extraction device 3 and used for containing materials and a second cavity 242 arranged between the stirring cup 2 and the extraction device 3 and used for storing liquid, the extraction device 3 is provided with a filter hole 31 communicated with the first cavity 241 and the second cavity 242, the upper end of the extraction assembly and the cup mouth of the stirring cup 2 form a sealing structure, when the liquid level is higher than the height of the filter hole 31, the second cavity 242 forms a closed cavity, and therefore gas exchange does not exist between the first cavity 241 and the second cavity 242. The main machine 1 is provided with an air pump assembly 12, the air pump assembly 12 is provided with an air inlet hole 25 to enable air to enter the second chamber 242, the air inlet hole 25 is arranged below the filter hole 31 in the longitudinal direction, and when the air pump assembly is in an inflation state, the amount of liquid entering the second chamber from the first chamber is not larger than the space volume above the liquid level of the second chamber before the inflation program is started.

The utility model discloses a food preparation machine, on current food preparation machine's basis, increase extraction element 3 and be used for the splendid attire to treat the extract in stirring cup 2, can be tealeaves, fruit tea etc.. The extraction device 3 divides the processing cavity 24 of the stirring cup 2 to form a first chamber 241 in the extraction device 3 and a second chamber 242 between the extraction device 3 and the stirring cup 2, and the first chamber 241 and the second chamber 242 are communicated with each other through the filter holes 31. Further, an air pump assembly 12 is added to the main body 1. When the food processor performs an extraction process, the air pump assembly 12 generates air and supplies the air into the second chamber 242 to change the pressure of the air in the second chamber 242 during an extraction process, and when the pressure in the second chamber 242 is gradually higher than the pressure in the first chamber 241 due to the closed chamber 242, the liquid in the second chamber 242 flows into the first chamber 241 under the action of the pressure difference, so as to raise the liquid level in the first chamber 241. After the liquid level rises to a certain height, a secondary extraction process is performed, the air pump assembly 12 stops working intermittently, no air is supplied to the second chamber 242, air is exhausted from the second chamber 242 to release pressure, so as to reduce the pressure of the second chamber 242, so that under the condition that the pressure in the second chamber 242 is gradually lower than the pressure of the first chamber 241, the liquid in the first chamber 241 flows into the second chamber 242 under the action of the pressure difference, and the liquid level in the first chamber 241 begins to fall back. Through the process of cyclic reciprocation, the liquid level constantly rises and falls back, and the liquid exchange in the first cavity 241 and the second cavity 242 is carried out, so that the extraction efficiency is improved. In an extraction process, the amount of liquid entering the first chamber 241 from the second chamber 242 is not greater than the volume of the space above the liquid level of the first chamber 241 before the aeration process, so that the liquid is prevented from filling the first chamber 241 and overflowing along the cup cover.

As shown in fig. 1 and 3, in one embodiment, the food processor further comprises an air guiding groove 32, the air guiding groove 32 has an air inlet 321 and an air outlet 321, the air inlet 321 is connected to the air inlet 25, and the air outlet 321 is connected to the second chamber 242.

The air guide groove 32 can separate the air pump assembly 12 from the liquid in the second chamber 242, so that air is prevented from directly flowing into the second chamber 242, bubbles in the liquid in the second chamber 242 can be reduced, and sensory experience of a user is improved; on the other hand, the liquid can be prevented from flowing backwards into the air pump 121 along the air inlet 25, and the normal operation of the air pump 121 is prevented from being influenced.

As shown in fig. 1 and 4, in one embodiment, the air guide groove 32 is provided in the extraction device 3, and when the extraction device 3 is built in the agitation cup 2, the air inlet end 321 of the air guide groove 32 surrounds the air inlet hole 25. The air guide groove 32 is integrated with the extraction device 3, wherein the air guide groove 32 is formed on the outer wall of the extraction device 3 and can be a partial annular groove surrounding one side of the extraction device 3. Due to the distance between the bottom wall of the extracting device 3 and the stirring blade 23, the air guiding groove 32 should extend downward for a certain length to enable the air inlet end 321 to surround the air inlet hole 25.

In one embodiment, the air guide groove 32 can be further disposed on the stirring cup 2, the air guide groove 32 can be formed on the cup wall of the stirring cup 2, and the air inlet 321 of the air guide groove 32 is communicated with the air inlet 25.

In the food processor of the utility model, the air guide groove 32 can be arranged in the extraction device 3 and is integrated with the extraction device 3, when the extraction device 3 is not used and taken out, the volume in the processing cavity 24 is not affected, and the stirring of the food material by the stirring knife 23 is not hindered; when the air guide groove 32 is formed in the mixing cup 2 integrally with the mixing cup 2, the structure of the extraction apparatus 3 can be simplified without considering the sealing between the air inlet 25 of the air pump 121 and the air inlet 321 of the air guide groove 32.

As shown in FIG. 3, in one embodiment, a plurality of filtering holes 31 are provided and distributed at the bottom end of the extraction device 3, the area ratio of the filtering holes 31 to the bottom end of the extraction device 3 is A, and A is greater than or equal to 1/20 and less than or equal to 1/3. In the present embodiment, the diameter D of the bottom of the extraction device 3 is 50mm, the diameter D of each filter hole 31 is 2mm, the number of filter holes 31 is n, the number of filter holes is 1, 6, 12, 18, and 24 in each layer, the total number is 61, and the area ratio a between the filter holes 31 and the bottom of the extraction device 3 is about 1/10.

Because tealeaves waits for the extract can subside in extraction device 3's bottom, locates extraction device 3's bottom with filtration pore 31, and the liquid exchange in-process can drive the material motion, improves extraction efficiency. The filter holes 31 are arranged in a plurality, so that the problem that the single filter hole 31 blocks and obstructs liquid exchange is avoided, and the liquid exchange efficiency can be improved. Through the bottom area ratio of limiting the filter holes and the extraction device, the problem that the area of the filter holes is too small to influence the liquid exchange efficiency and further influence the extraction efficiency is avoided.

As shown in fig. 1-5 and 6, in one embodiment, the air pump assembly 12 includes an air pump 121 and an air exhaust member (not shown in the drawings) which are alternately operated, the air pump 121 can inflate and pressurize the second chamber 242 to generate a negative pressure difference between the first chamber 241 and the second chamber 242, the liquid flows to the first chamber 241 through the filter hole 31, the air exhaust member can exhaust and decompress the second chamber 242 to generate a positive pressure difference between the first chamber 241 and the second chamber 242, and the liquid flows to the second chamber 242 through the filter hole 31. As shown in fig. 5 and 6, the liquid level in the first chamber 241 is raised. The exhaust member may be an exhaust valve, and after the pressure in the second chamber 242 is increased to a certain degree, the exhaust valve is opened to exhaust the gas to the outside, or the exhaust member may be an air pump 121, and the air suction hole of the air pump 121 is communicated with the air inlet 321 of the air guide groove 32, and the air inlet pump 121 and the air pump 121 alternately operate.

Of course, it will be appreciated that there are various ways to vent the second chamber 242, such as providing a vent valve in the wall of the blender cup 2.

The utility model discloses a food preparation machine, air pump subassembly 12 set up air pump 121 to second cavity 242 air entrainment to set up the piece of airing exhaust to second cavity 242 exhaust, the air pump 121 and the piece of airing exhaust of work in turn make first cavity 241 and second cavity 242 produce pressure differential, and under the effect of pressure differential, liquid passes through filtration pore 31 and flows between first cavity 241 and second cavity 242, improves extraction efficiency. The working frequency of the air pump 121 and the air exhaust member can be changed, the lifting frequency of the liquid level can be adjusted, and the extraction efficiency can be changed, so that the device is suitable for different extracts to be extracted.

As shown in fig. 1 and 6, in one embodiment, the food processor further includes a pressure relief member 26, and the pressure relief member 26 includes a pressure relief hole 261 for communicating the first chamber 241 with the outside air, and a pressure relief valve 262 for opening and closing the pressure relief hole 261. Wherein, the inflation amount of the air pump 121 is larger than the air displacement of the pressure relief hole 261.

When the liquid level in the first chamber 241 rises gradually, the original gas space is compressed, so that the gas pressure in the first chamber 241 is increased gradually, and when the pressure in the first chamber 241 is increased to a certain value, the pressure relief piece 26 can realize the communication between the inside of the cup body 21 and the outside air for pressure relief, thereby reducing the potential safety hazard of the food processor in use and ensuring the use safety.

As shown in fig. 1, in one embodiment, the air pump 121 and the motor 11 are arranged in parallel inside the main machine 1, the air inlet 25 is arranged on the bottom wall of the processing chamber 24, and the air inlet 25 is provided with a one-way air inlet structure 122, and the one-way air inlet structure 122 can be a one-way air inlet valve connected to the air pump 121.

With the mode that air pump 121 and motor 11 set up side by side, make full use of host computer 1's space, the structure is compacter, is favorable to realizing host computer 1's miniaturization, directly installs air pump 121 export in the cup 21 diapire, need not set up the air cock of connecting air pump 121 such as air duct, and simple structure is reliable. The one-way air inlet structure 122 can ensure that the liquid in the second chamber 242 cannot flow backwards, which may cause water inlet damage of the air pump 121.

As shown in fig. 1 and 3, in one embodiment, the extraction device 3 is detachably provided on the stirring cup 2, the volume of the first chamber 241 is V, the rated maximum allowable space volume under the liquid level of the first chamber 241 is V1, the volume of the second chamber 242 is V2, and V1+ V2 is ≦ V. In this embodiment, the food processor has a rated capacity of 300ml, the first chamber 241 has a volume V of 180ml, the first chamber has a spatial volume V1 of 84ml and the second chamber 242 has a volume of 74ml on a rated reference line.

The utility model discloses a food preparation machine possesses multiple functions such as tea-making, slurrying, under the condition of non-tea-making, can take off extraction device 3 so that carry out other processes, and extraction device 3 takes off the back, eats the material and can directly drop into processing chamber 24 in, improves the contact probability of eating material and stirring sword 23. The extraction device 3 is detachably mounted, so that the stirring cup 2 and the tea extraction device can be conveniently cleaned. In an extraction process, when the air pump 121 starts to operate, the liquid in the second chamber 242 enters the first chamber 241 through the filter hole 31 until the liquid level in the second chamber 242 is level with the filter hole 31, and the remaining liquid in the second chamber 242 cannot enter the first chamber 241. Since the sum of the volume of the maximum allowable space below the liquid level of the first chamber 241 and the volume of the second chamber 242 is smaller than the volume of the first chamber 241, at this time, the liquid in the first chamber 241 still does not reach the maximum volume value, that is, the liquid level in the first chamber 241 is lower than the opening of the extraction device, so that the liquid can be ensured not to overflow.

In one embodiment, the ratio of the volume V of the first chamber 241 to the volume V2 of the second chamber 242 is B, 2 ≦ B ≦ 5. The anti-overflow effect is ensured to be met, and simultaneously, the volume of the extraction device is improved as much as possible.

As shown in fig. 1 and 6, in one embodiment, the blending cup 2 includes a cup body 21 and a cup cover 22 covering the cup body 21, a limit step 211 is disposed on an inner wall of a cup opening of the cup body 21, a peripheral edge of the extraction device 3 is lapped on the limit step 211, and the cup cover 22 and the limit step 211 can clamp and fix the peripheral edge of the extraction device 3. A sealing structure is arranged between the limiting step 211 and the peripheral edge of the extraction device 3, and the sealing structure comprises a sealing ring 221 arranged on the upper end surface of the cup cover 22 corresponding to the cup mouth of the cup body 21.

The mixing cup 2 is provided with a cup cover 22 for sealing the processing chamber 24, and the cup cover 22 and the cup body 21 can be used for fixing the extraction device 3. When the cup cover 22 is covered on the cup body 21, the extraction device 3 is tightly pressed on the limiting step 211, so that the limiting step 211 and the cup cover 22 clamp and fix the peripheral edge of the extraction device 3, and the stable state of the extraction device 3 in the stirring cup 2 is ensured. Sealing washer 221 can butt sealed bowl cover 22 simultaneously, the clearance between extraction element 3 and bowl cover 22 and the cup 21, can enough avoid the gas exchange in first cavity 241 and the second cavity 242, form the relative sealed state of second cavity 242, when admitting air to second cavity 242, avoid gas to enter first cavity 241 along the clearance between the two, and can't realize the lift of liquid level in the effect of pressure differential, also can avoid liquid to overflow along the clearance between bowl cover 22 and the cup 21 simultaneously.

As shown in FIGS. 1 and 6, in one embodiment, the ratio of the equivalent diameter of the extraction device 3 to the equivalent diameter of the processing chamber 24 is D, and D is greater than or equal to 0.3 and less than or equal to 0.8. In this embodiment, the extraction apparatus 3 has a side wall with an average diameter of 54mm, a processing chamber 24 with an equivalent diameter of 72mm, and a D of 0.75.

When the equivalent diameter of the extraction device 3 is too small relative to the equivalent diameter of the processing chamber 24, the receiving space of the extraction device 3 is too small and the amount of the contained material is small. When the equivalent diameter of the extraction device 3 is too large relative to the equivalent diameter of the processing chamber 24, the space of the second chamber outside the extraction device is too small to facilitate the liquid exchange, the extraction efficiency is low, and the extraction device is not convenient to take and place.

The technical solution protected by the present invention is not limited to the above embodiments, and it should be noted that the technical solution of any one embodiment is combined with the technical solution of one or more other embodiments in the protection scope of the present invention. Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (10)

1. A multifunctional food processor comprises a main machine and a stirring cup, wherein the stirring cup forms a processing cavity, a stirring knife is arranged in the processing cavity, a motor capable of driving the stirring knife is arranged in the main machine, and the multifunctional food processor is characterized by further comprising an extraction device, wherein the extraction device is arranged above the stirring knife;

the extraction device can divide the processing cavity to form a first cavity which is arranged in the extraction device and used for containing materials and a second cavity which is arranged between the stirring cup and the extraction device and used for storing liquid, the extraction device is provided with a filter hole for communicating the first cavity with the second cavity, and when the liquid level is higher than the filter hole, the second cavity forms a closed cavity;

the host computer is equipped with air pump assembly, air pump assembly be equipped with the inlet port in order to can to the second cavity admits air, the inlet port is located in longitudinal direction the below of filtration pore, during air pump assembly inflation state, follow the second cavity enters into the liquid volume of first cavity is not more than before the inflation procedure starts the space volume above the second cavity liquid level.

2. A multifunctional food processor as claimed in claim 1,

the air guide groove is provided with an air inlet end and an air outlet end, the air inlet end is communicated with the air inlet hole, and the air outlet end is communicated with the second cavity.

3. A multifunctional food processor according to claim 2, characterized in that,

the air guide groove is arranged on the extraction device, and when the extraction device is arranged in the stirring cup, the air inlet end of the air guide groove surrounds the air inlet hole;

or the air guide groove is arranged on the stirring cup.

4. A multifunctional food processor as claimed in claim 1,

the filter holes are distributed at the bottom end of the extraction device, the area ratio of the filter holes to the bottom end of the extraction device is A, and A is not less than 1/20 and not more than 1/3.

5. A multifunctional food processor as claimed in claim 1,

the air pump assembly comprises an air pump and an exhaust piece which work alternately, the air pump can inflate and pressurize the second chamber, so that the first chamber is opposite to the second chamber to generate negative pressure difference, liquid flows to the first chamber through the filter holes, the exhaust piece can exhaust and decompress the second chamber to enable the first chamber to be opposite to the second chamber to generate positive pressure difference, and the liquid flows to the second chamber through the filter holes.

6. A multifunctional food processor as claimed in claim 5,

the food processor also comprises a pressure relief piece, the pressure relief piece comprises a pressure relief hole for communicating the first chamber with the outside air, and the inflation volume of the air pump is greater than the exhaust volume of the pressure relief hole;

or, the pressure relief piece comprises a pressure relief hole for communicating the first chamber with outside air and a pressure relief valve for opening and closing the pressure relief hole.

7. A multifunctional food processor as claimed in claim 6,

the air pump and the motor are arranged in the main machine in parallel, the air inlet is arranged on the bottom wall of the processing cavity, and the air inlet is provided with a one-way air inlet structure.

8. A multifunctional food processor as claimed in claim 1, wherein said extraction means is removably mounted to said blender cup, said first chamber has a volume V, the first chamber has a rated maximum allowable ullage volume of V1, said second chamber has a volume V2, V1+ V2 ≦ V;

or the ratio of the volume V of the first chamber to the volume V2 of the second chamber is B, and B is more than or equal to 2 and less than or equal to 5.

9. A multifunctional food processor as claimed in claim 1,

the stirring cup comprises a cup body and a cup cover covering the cup body, a limit step is arranged on the inner wall of a cup opening of the cup body, the peripheral edge of the extraction device is lapped on the limit step, the cup cover and the limit step can clamp and fix the peripheral edge of the extraction device, and a sealing structure is arranged between the limit step and the peripheral edge of the extraction device.

10. A multifunctional food processor as claimed in claim 9,

the ratio of the equivalent diameter of the extraction device to the equivalent diameter of the processing cavity is D, and D is more than or equal to 0.3 and less than or equal to 0.8.

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