CN109757557B - Yoghurt fermenting device and yoghurt fermenting method - Google Patents
Yoghurt fermenting device and yoghurt fermenting method Download PDFInfo
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- CN109757557B CN109757557B CN201711101144.6A CN201711101144A CN109757557B CN 109757557 B CN109757557 B CN 109757557B CN 201711101144 A CN201711101144 A CN 201711101144A CN 109757557 B CN109757557 B CN 109757557B
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Abstract
The application provides a yoghurt fermentation device and a yoghurt fermentation method, wherein the yoghurt fermentation device comprises an outer pot, and the outer pot is provided with a containing cavity; the inner pot is placed in the accommodating cavity and is used for accommodating food materials for making the yoghourt; the cooker cover is arranged on the outer cooker, the cooker cover has a first opening position for avoiding the inner cooker, and the cooker cover has a first closing position for closing the inner cooker, and when the cooker cover is positioned at the first closing position, a closed working cavity is formed between the cooker cover and the inner cooker; the vacuum generating device is arranged in the outer pot and is used for exhausting the working cavity so as to form a vacuum state in the working cavity. By adopting the yoghurt fermentation device, the yoghurt can be fermented in a vacuum state, the activity of strains in the yoghurt is effectively improved, and the content and taste of nutritional ingredients of the yoghurt are improved.
Description
Technical Field
The application relates to the technical field of yoghurt fermentation equipment, in particular to a yoghurt fermentation device and a yoghurt fermentation method.
Background
In the prior art, the yoghurt processing equipment is processed in a non-vacuum state in the yoghurt preparation process. The processing mode in the prior art is adopted to solve the problems of bad taste and the like of the yoghourt caused by low activity of the strain of the prepared yoghourt. Besides, the yogurt fermentation equipment in the prior art has the defects of long fermentation time, more harmful bacteria and the like.
Disclosure of Invention
The application mainly aims to provide a yoghurt fermentation device and a yoghurt fermentation method, which are used for solving the problem of low strain activity of yoghurt in the prior art.
In order to achieve the above object, according to one aspect of the present application, there is provided a yogurt fermentation apparatus comprising: an outer pan having a receiving cavity; the inner pot is placed in the accommodating cavity and is used for accommodating food materials for making the yoghourt; the cooker cover is arranged on the outer cooker, the cooker cover has a first opening position for avoiding the inner cooker, and the cooker cover has a first closing position for closing the inner cooker, and when the cooker cover is positioned at the first closing position, a closed working cavity is formed between the cooker cover and the inner cooker; the vacuum generating device is arranged in the outer pot and is used for exhausting the working cavity so as to form a vacuum state in the working cavity.
Further, the outer pot includes: a base; the heat preservation cover, the heat preservation cover sets up in the base, and the inside of heat preservation cover forms and holds the chamber, encloses between the outer peripheral face of the heat preservation cover of part and the base inner wall and establishes into the installation cavity, and vacuum generating device sets up in the installation cavity, and the passageway that is linked together with the working chamber has been seted up to at least one in base, heat preservation cover, pot cover, the interior pot, and vacuum generating device is linked together with the working chamber through the passageway.
Further, the outer peripheral surface of part of the inner pot and the inner wall of the heat preservation cover are arranged with a distance, so that a hollow interlayer is formed between the outer peripheral surface of the inner pot and the inner wall of the heat preservation cover, the hollow interlayer is communicated with the channel, and the vacuum generating device is used for exhausting air into the hollow interlayer to form a vacuum state in the working cavity.
Further, the vacuum generating device includes: the vacuum pump is arranged in the mounting cavity, a first through hole is formed in the side wall of the heat preservation cover, and the working end of the vacuum pump is communicated with the hollow interlayer through the first through hole.
Further, the vacuum generating device further includes: the first control chamber is arranged on the outer peripheral surface of the heat preservation cover, the first control chamber is communicated with the hollow interlayer through a first through hole, and the working end of the vacuum pump is communicated with the hollow interlayer through the first control chamber; the first control valve is connected with the first control chamber, the first control valve has a second opening position for opening the first through hole to enable the first control chamber to be communicated with the hollow interlayer, and the first control valve has a second closing position for closing the first through hole to enable the first control chamber to be disconnected from the hollow interlayer.
Further, the vacuum generating device further includes: the liquid storage tank is arranged in the mounting cavity, can be communicated with the hollow interlayer and is used for conveying heat transfer medium into the hollow interlayer.
Further, the vacuum generating device further includes: the second control chamber is arranged at the bottom of the heat preservation cover, a second through hole is arranged at the bottom of the heat preservation cover, the second control chamber is communicated with the hollow interlayer through the second through hole, and the liquid storage tank is communicated with the second control chamber; the second control valve is connected with the second control chamber, and has a third opening position for opening the second through hole to enable the second control chamber to be communicated with the hollow interlayer, and a third closing position for closing the second through hole to enable the second control chamber to be disconnected from the hollow interlayer.
Further, the liquid storage tank includes: the first end of the first pipeline is communicated with the liquid storage tank, and the second end of the first pipeline is communicated with the second control chamber; and when the vacuum pump pumps air into the first control chamber, the liquid storage tank can convey heat transfer medium into the hollow interlayer through the second pipeline.
Further, the liquid storage tank further includes: and the circulating pump is arranged on the first pipeline.
Further, the first control valve and/or the second control valve are/is electromagnetic valves, and after the temperature in the hollow interlayer reaches the first preset temperature, the first control valve is in the second opening position.
Further, the yogurt fermentation device further comprises: the heating part is arranged in the hollow interlayer or arranged between the bottom of the heat preservation cover and the inner wall of the base; the temperature controller is arranged on the outer pot and is used for monitoring the temperature in the hollow interlayer; the pressure sensor is arranged on the outer pot and is used for monitoring the pressure in the hollow interlayer.
Further, a part of the outer circumferential surface of the inner pan is disposed with a distance from the inner pan to form an installation space, and the vacuum generating device is disposed in the installation space.
Further, the yogurt fermentation device further comprises: PCBA control panel sets up in the installation space.
Further, the yogurt fermentation device further comprises: the middle partition board is arranged in the outer pot, a first installation cavity is formed between the upper surface of the middle partition board and the outer pot, the first installation cavity is used for placing a heat transfer medium, a second installation cavity is formed between the lower surface of the middle partition board and the bottom of the outer pot, and the second installation cavity is used for accommodating the vacuum generating device.
Further, the yogurt fermentation device further comprises: the heating part is arranged on the middle partition plate and is used for heating the heat transfer medium; and/or a PCBA control board disposed in the second mounting cavity.
According to another aspect of the present application, there is provided a method for fermenting yogurt, the method using the yogurt fermentation apparatus described above for fermentation, the method comprising the steps of: a working cavity is formed between the pot cover and the inner pot; starting the vacuum generating device, and pumping air into the working cavity by the vacuum generating device to form vacuum in the working cavity, so that the food in the inner pot is fermented for a first preset time in a vacuum state.
Further, the step of starting the vacuum generating device further comprises: opening a first control valve and a second control valve of the vacuum generating device to enable a heat transfer medium in the liquid storage tank to enter a hollow interlayer formed between a heat insulation cover and a base of the vacuum generating device; closing the second control valve when the amount of the heat transfer medium entering the hollow interlayer reaches a preset amount; after the pressure value in the hollow interlayer reaches the preset pressure, closing the first control valve and the vacuum pump of the vacuum generating device; starting a heating part of the yoghurt fermentation device to heat the heat transfer medium in the hollow interlayer so as to enable the temperature in the hollow interlayer to reach a second preset temperature; after the heating part heats the heat transfer medium for a second preset time, the second control valve is opened to reflux the heat transfer medium remained in the hollow interlayer into the liquid storage tank, and the vacuum pump is opened to discharge the steam generated in the hollow interlayer.
Further, the step of starting the vacuum generating device further comprises: a circulation pump disposed on the first line of the tank is activated to cause the heat transfer medium to enter the hollow interlayer.
By applying the technical scheme of the application, the yoghurt fermentation device can be used for fermenting the yoghurt in a vacuum state, so that the activity of strains in the yoghurt is effectively improved, and the content and taste of nutritional ingredients of the yoghurt are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
fig. 1 shows a schematic structural view of an embodiment one of a yoghurt fermentation apparatus according to the application;
fig. 2 shows a schematic structural view of a second embodiment of a yoghurt fermentation apparatus according to the application;
fig. 3 shows a schematic structural view of an embodiment three of a yoghurt fermentation apparatus according to the application;
fig. 4 shows a schematic structural view of an embodiment four of a yoghurt fermentation apparatus according to the application.
Wherein the above figures include the following reference numerals:
10. an outer pot; 11. a base; 12. a thermal insulation cover; 121. a first through hole; 122. a second through hole;
20. an inner pot; 30. a pot cover; 31. a hinge lock lever; 32. a pressure release valve;
40. a vacuum generating device;
41. a vacuum pump; 42. a first control room; 43. a first control valve; 44. a liquid storage tank; 441. a first pipeline; 442. a second pipeline;
45. a second control chamber; 46. a second control valve; 47. a circulation pump;
51. a working chamber; 52. a hollow interlayer;
60. a heating section; 70. a temperature controller; 80. a seal ring; 90. an installation space; 911. a first mounting cavity; 912. a second mounting cavity; 91. a PCBA control board; 92. and a middle partition plate.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and the claims and drawings of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art, that in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and that identical reference numerals are used to designate identical devices, and thus descriptions thereof will be omitted.
Referring to fig. 1 to 4, according to first to fourth embodiments of the present application, there are provided yogurt fermentation apparatuses of four structures.
Specifically, as shown in fig. 1, the yogurt fermentation apparatus of the first embodiment includes an outer pot 10, an inner pot 20, a pot cover 30, and a vacuum generating device 40. The outer pot 10 has a receiving chamber. The inner pot 20 is placed in the accommodating cavity, and the inner pot 20 is used for accommodating food materials for making yoghurt. The lid 30 is arranged on the outer pot 10, the lid 30 has a first open position avoiding the inner pot 20, and the lid 30 has a first closed position closing the inner pot 20. When the lid 30 is in the first closed position, a closed working chamber 51 is formed between the lid 30 and the inner pot 20. The vacuum generating device 40 is disposed in the outer pot 10, and the vacuum generating device 40 is used for pumping air from the working chamber to form a vacuum state in the working chamber.
In the embodiment, the yogurt fermentation device can be used for fermenting the yogurt in a vacuum state, so that the activity of strains in the yogurt is effectively improved, and the content and taste of nutritional ingredients of the yogurt are improved. By adopting the yoghurt fermentation device, the air extraction function is added in the yoghurt manufacturing process, so that the yoghurt manufacturing time is shortened by 20% -50%.
Wherein, the outer pot 10 comprises a base 11 and a heat preservation cover 12. The heat preservation cover 12 is arranged in the base 11, and a containing cavity is formed in the heat preservation cover 12. A mounting cavity 13 is defined between the outer peripheral surface of a part of the heat-insulating cover 12 and the inner wall of the base 11, and a vacuum generating device 40 is arranged in the mounting cavity 13. At least one of the base 11, the heat-insulating cover 12, the pot cover 30 and the inner pot 20 is provided with a channel communicated with the working cavity, and the vacuum generating device 40 is communicated with the working cavity through the channel. This arrangement allows the vacuum generating device 40 to conveniently effect evacuation of the working chamber.
Further, a part of the outer circumferential surface of the inner pot 20 is disposed with a distance from the inner wall of the heat preservation cover 12 so that a hollow interlayer 52 is formed between the outer circumferential surface of the inner pot 20 and the inner wall of the heat preservation cover 12. The hollow interlayer 52 communicates with the passage, and the vacuum generating device 40 generates a vacuum state in the working chamber 51 by sucking air into the hollow interlayer 52. The arrangement can utilize the hollow interlayer 52 to heat the inner pot, and the vacuum generating device can also perform vacuum pumping operation on the working cavity through the hollow interlayer 52 before heating the food materials.
Specifically, the vacuum generating device 40 includes a vacuum pump 41. The vacuum pump 41 is disposed in the mounting cavity 13, a first through hole 121 is formed in a side wall of the heat insulation cover 12, and a working end of the vacuum pump 41 is communicated with the hollow interlayer 52 through the first through hole 121. This arrangement can improve the reliability of the evacuation of the vacuum generating device 40.
The vacuum generating device 40 further comprises a first control chamber 42 and a first control valve 43. The first control chamber 42 is disposed on the outer peripheral surface of the heat insulation cover 12, and the first control chamber 42 is communicated with the hollow interlayer 52 through the first through hole 121. The working end of the vacuum pump 41 communicates with the hollow interlayer 52 through the first control chamber 42. The first control valve 43 is connected to the first control chamber 42, the first control valve 43 having a second open position in which the first through hole 121 is opened to communicate the first control chamber 42 with the hollow interlayer 52, and the first control valve 43 having a second closed position in which the first through hole 121 is closed to disconnect the first control chamber 42 from the hollow interlayer 52. This arrangement allows the vacuum pump to achieve a vacuum in the working chamber by evacuating the first control chamber 42. The vacuum pump is connected or disconnected with the hollow interlayer 52 through the first control valve 43, so that the vacuum pumping and the heating fermentation process of the food materials are mutually independent, and the reliability and the practicability of the yoghurt fermentation device are improved.
To improve the quality and mouthfeel of the fermented yoghurt, the vacuum generating device 40 is further provided with a liquid reservoir 44. A reservoir 44 is provided in the mounting chamber 13, the reservoir 44 being in communication with the hollow sandwich 52, the reservoir 44 being adapted to deliver a heat transfer medium into the hollow sandwich 52. The heat transfer medium may be water or alcohol.
Further, the vacuum generating device 40 further comprises a second control chamber 45 and a second control valve 46. The second control chamber 45 is disposed at the bottom of the heat insulation cover 12, a second through hole 122 is disposed at the bottom of the heat insulation cover 12, the second control chamber 45 is communicated with the hollow interlayer 52 through the second through hole 122, and the liquid storage tank 44 is communicated with the second control chamber 45. The second control valve 46 is connected to the second control chamber 45, the second control valve 46 having a third open position in which the second through hole 122 is opened to communicate the second control chamber 45 with the hollow sandwich 52, and the second control valve 46 having a third closed position in which the second through hole 122 is closed to disconnect the second control chamber 45 from the hollow sandwich 52.
As shown in fig. 2, the yogurt fermentation apparatus of the second embodiment is different from the first embodiment in that a circulation pump 47 is added, and specifically, the liquid tank 44 includes a first pipe 441, a second pipe 442, and the circulation pump 47. A first end of the first conduit 441 communicates with the tank 44 and a second end of the first conduit 441 communicates with the second control chamber 45. A first end of the second conduit 442 communicates with the liquid reservoir 44, a second end of the second conduit 442 communicates with the first control valve 43, and when the vacuum pump 41 pumps air into the first control chamber 42, the liquid reservoir 44 can deliver a heat transfer medium into the hollow interlayer 52 through the second conduit 442. The circulation pump 47 is disposed on the first pipe 441. The arrangement can ensure that the heat transfer value can smoothly enter the hollow interlayer for heating.
Preferably, in order to improve the reliability of the yoghurt fermentation apparatus, the first control valve 43 and the second control valve 46 may be provided as solenoid valves, the first control valve 43 being in the second open position after the temperature in the hollow sandwich 52 has reached a first preset temperature (which may be 120 °).
Wherein, the yoghurt fermentation device also comprises a heating part 60, a temperature controller 70 and a pressure sensor. The heating portion 60 is disposed within the hollow interlayer 52. Of course, the heating portion 60 may be provided between the bottom of the heat-insulating cover 12 and the inner wall of the base 11. A temperature controller 70 is provided on the outer pot 10, the temperature controller 70 being used to monitor the temperature in the hollow interlayer 52. A pressure sensor is provided on the outer pan 10 for monitoring the pressure within the hollow interlayer 52. The arrangement can cooperate with each component to ferment the food material for preparing the yoghurt in a preset vacuum environment. Of course, a flowmeter may be provided in the yogurt fermentation apparatus to monitor the amount of heat transfer medium entering the hollow interlayer, and when the amount of heat transfer medium reaches a preset value, the conveyance of the heat transfer medium is stopped.
As shown in fig. 3, the yogurt starter of the third embodiment is different from the first embodiment in that only one vacuum pump 41 is provided without a water tank, and specifically, a part of the outer circumferential surface of the inner pan 20 may be provided with a distance from the inner pan 20 to form an installation space 90, and the vacuum generator 40 may be provided in the installation space 90. Wherein the yoghurt fermentation apparatus further comprises a PCBA (printed circuit board assembly) control board 91. The PCBA control board 90 is disposed within the mounting space 91. Wherein the working end of the vacuum pump 41 in the vacuum generating device 40 can be extended into the working cavity of the inner pot for vacuumizing. The yogurt fermentation device with the structure can shorten the time by 20-50%, improve the taste and increase the content of the nutritional ingredients in the process of making the yogurt. The specific working mode is as follows: pouring the yoghurt material into the inner pot, buckling the upper cover and pressing the sealing ring. Then starting a vacuum pump to generate negative pressure in the container, wherein the range is as follows: -0.1KPa to-0.75 KPa (if the pressure is continuously reduced, the strain death is preferentially selected to-0.5 KPa, the activity of the strain is improved, the yogurt production time is shortened by 20% -50%, and after the yogurt is produced, the pressure release valve 32 can be opened for pressure release.
As shown in fig. 4, the yogurt starter of the fourth embodiment is different from the first embodiment in that only one vacuum pump 41 is provided without a water tank, and specifically, a middle partition 92, a heat generating part 60, and a PCBA control board 91 may be provided in the yogurt starter. The middle partition plate 92 is disposed in the outer pan 10, and a first installation cavity 911 is formed between an upper surface of the middle partition plate 92 and the outer pan 10, and the first installation cavity 911 is used for placing a heat transfer medium. A second installation chamber 912 is formed between the lower surface of the middle partition 92 and the bottom of the outer pan 10, and the second installation chamber 912 is used to accommodate the vacuum generating device 40. The heat generating portion 60 is provided on the intermediate separator 92, and the heat generating portion 60 is used for heating the heat transfer medium. The PCBA control board 90 is disposed within the second mounting cavity 912. The arrangement can shorten the time for making the yoghourt as well, and can improve the taste of the yoghourt made by the yoghourt fermentation device. In this embodiment, the yogurt fermentation may be stewed with water.
According to another aspect of the present application, there is provided a method for fermenting yogurt, the method using the yogurt fermentation apparatus of the above embodiment. The method comprises the following steps: so that a working chamber 51 is formed between the lid 30 and the inner pot 20. The vacuum generating device 40 is started, so that the vacuum generating device 40 pumps air into the working cavity 51 to form vacuum in the working cavity 51, and the food materials in the inner pot 20 are fermented for a first preset time in a vacuum state.
Wherein, the process of starting the vacuum generating device 40 further comprises: the first control valve 43 and the second control valve 46 of the vacuum generating device 40 are opened to allow the heat transfer medium in the liquid storage tank 44 to enter the hollow interlayer 52 formed between the heat-retaining cover 12 and the base 11 of the vacuum generating device 40. When the amount of heat transfer medium (1 to 100 ml) entering the hollow interlayer 52 reaches a preset amount, the second control valve 46 is then closed. After the pressure value (0 to-1000 Kpa) in the hollow interlayer 52 reaches a preset pressure, the first control valve 43 and the vacuum pump 41 of the vacuum generating device 40 are closed. The heating section 60 of the yoghurt fermentation apparatus is activated to heat the heat transfer medium in the hollow center 52 so that the temperature in the hollow center 52 reaches a second preset temperature. After the heating portion 60 heats the heat transfer medium for a second preset time, the second control valve 46 is opened to return the heat transfer medium remaining in the hollow interlayer 52 to the tank 44, and the vacuum pump 41 is opened to discharge the steam generated in the hollow interlayer 52.
If the yoghurt fermentation apparatus of this embodiment is used for fermenting yoghurt, as shown in fig. 2, it is also possible to activate the circulation pump 47 provided on the first line 441 of the liquid tank 44 when activating the vacuum generating means 40, so that the heat transfer medium enters the hollow sandwich 52.
In the above fermentation method, when the vacuum degree reaches a predetermined negative pressure, for example, -0.1 to-0.75 KPa, it is preferable to select-0.5 KPa. Under the negative pressure condition, the strain activity is best. Improving the content of nutrient components and taste. The main strains in the yoghurt are streptococcus thermophilus, lactobacillus bulgaricus and lactobacillus, and the strains are facultative anaerobes or micro anaerobes, and the vitality of the yoghurt is enhanced under the proper vacuum condition.
By making the yogurt under vacuum environment, the preparation time can be shortened, the taste can be improved, and the content of nutritional ingredients can be increased. The yoghourt, the fruit seasoning and the like can be put into the yoghourt fermentation device, the upper cover is closed, and the sealing ring on the base is pressed tightly, so that the inner upper shell and the inner lower shell are in a sealing state. Then a vacuum pump is started to vacuumize a working cavity in the yoghurt fermentation device, meanwhile, a heating disc is started to heat, the temperature is increased to the yoghurt manufacturing temperature (38-41 ℃), the vacuum pump continues to work until the vacuum in the interlayer reaches the limit vacuum of the vacuum pump (for example, 3 minutes of work), and then the vacuum pump is closed. And after the yogurt is manufactured, opening the pot cover according to the pressure relief valve.
In addition to the foregoing, references in the specification to "one embodiment," "another embodiment," "an embodiment," etc., indicate that the particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application, as generally described. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is intended that such feature, structure, or characteristic be implemented within the scope of the application.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (8)
1. A yoghurt fermentation apparatus, comprising:
an outer pan (10), the outer pan (10) having a receiving cavity;
the inner pot (20), the said inner pot (20) is placed in the said holding cavity, the said inner pot (20) is used for holding the food material making sour milk;
a cover (30), wherein the cover (30) is covered on the outer pot (10), the cover (30) has a first open position for avoiding the inner pot (20), and the cover (30) has a first closed position for closing the inner pot (20), and when the cover (30) is positioned at the first closed position, a closed working cavity (51) is formed between the cover (30) and the inner pot (20);
the vacuum generating device (40) is arranged in the outer pot (10), and the vacuum generating device (40) is used for exhausting the working cavity so as to form a vacuum state in the working cavity;
the outer pot (10) comprises:
a base (11);
the heat preservation cover (12), the heat preservation cover (12) is arranged in the base (11), the accommodating cavity is formed in the heat preservation cover (12), an installation cavity (13) is formed between the outer peripheral surface of part of the heat preservation cover (12) and the inner wall of the base (11), the vacuum generating device (40) is arranged in the installation cavity (13), a channel communicated with the working cavity is formed in at least one of the base (11), the heat preservation cover (12), the pot cover (30) and the inner pot (20), and the vacuum generating device (40) is communicated with the working cavity through the channel;
a part of the outer circumferential surface of the inner pot (20) and the inner wall of the heat preservation cover (12) are arranged with a distance, so that a hollow interlayer (52) is formed between the outer circumferential surface of the inner pot (20) and the inner wall of the heat preservation cover (12), the hollow interlayer (52) is communicated with the channel, and the vacuum generating device (40) is used for generating a vacuum state in the working cavity (51) by pumping air into the hollow interlayer (52);
the yoghurt fermentation device further comprises:
a heating part (60), wherein the heating part (60) is arranged in the hollow interlayer (52), or the heating part (60) is arranged between the bottom of the heat insulation cover (12) and the inner wall of the base (11);
the temperature controller (70) is arranged on the outer pot (10), and the temperature controller (70) is used for monitoring the temperature in the hollow interlayer (52);
a pressure sensor disposed on the outer pan (10) for monitoring the pressure within the hollow interlayer (52);
the vacuum generating device (40) comprises:
the vacuum pump (41) is arranged in the mounting cavity (13), a first through hole (121) is formed in the side wall of the heat insulation cover (12), and the working end of the vacuum pump (41) is communicated with the hollow interlayer (52) through the first through hole (121);
the first control chamber (42) is arranged on the outer peripheral surface of the heat preservation cover (12), the first control chamber (42) is communicated with the hollow interlayer (52) through the first through hole (121), and the working end of the vacuum pump (41) is communicated with the hollow interlayer (52) through the first control chamber (42);
-a first control valve (43), the first control valve (43) being connected to the first control chamber (42), the first control valve (43) having a second open position opening the first through-hole (121) to communicate the first control chamber (42) with the hollow interlayer (52), and the first control valve (43) having a second closed position closing the first through-hole (121) to disconnect the first control chamber (42) from the hollow interlayer (52);
the liquid storage tank (44), liquid storage tank (44) set up in install chamber (13), liquid storage tank (44) with cavity intermediate layer (52) are linked together, liquid storage tank (44) are used for to carry heat transfer medium in cavity intermediate layer (52).
2. Yoghurt fermentation apparatus in accordance with claim 1, wherein the vacuum generating device (40) further comprises:
the second control chamber (45), the second control chamber (45) is arranged at the bottom of the heat insulation cover (12), a second through hole (122) is arranged at the bottom of the heat insulation cover (12), the second control chamber (45) is communicated with the hollow interlayer (52) through the second through hole (122), and the liquid storage tank (44) is communicated with the second control chamber (45);
-a second control valve (46), the second control valve (46) being connected to the second control chamber (45), the second control valve (46) having a third open position opening the second through hole (122) to communicate the second control chamber (45) with the hollow interlayer (52), and the second control valve (46) having a third closed position closing the second through hole (122) to disconnect the second control chamber (45) from the hollow interlayer (52).
3. Yoghurt fermentation apparatus in accordance with claim 2, wherein the tank (44) comprises:
-a first conduit (441), a first end of said first conduit (441) being in communication with said tank (44), a second end of said first conduit (441) being in communication with said second control chamber (45);
and a second pipeline (442), wherein a first end of the second pipeline (442) is communicated with the liquid storage tank (44), a second end of the second pipeline (442) is communicated with the first control valve (43), and when the vacuum pump (41) pumps air into the first control chamber (42), the liquid storage tank (44) conveys a heat transfer medium into the hollow interlayer (52) through the second pipeline (442).
4. A yoghurt fermentation device as claimed in claim 3, wherein the reservoir (44) further comprises:
and a circulation pump (47), wherein the circulation pump (47) is arranged on the first pipeline (441).
5. Yoghurt fermentation apparatus in accordance with claim 2, wherein the first control valve (43) and/or the second control valve (46) is a solenoid valve, the first control valve (43) being in the second open position after the temperature in the hollow centre (52) has reached a first preset temperature.
6. A method of yoghurt fermentation using a yoghurt fermentation apparatus as claimed in any one of claims 1 to 5, which comprises the steps of:
a working cavity (51) is formed between the pot cover (30) and the inner pot (20);
starting the vacuum generating device (40), and pumping air into the working cavity (51) by the vacuum generating device (40) to form vacuum in the working cavity (51), so that the food in the inner pot (20) is fermented for a first preset time in a vacuum state.
7. The method according to claim 6, wherein the step of activating the vacuum generating means (40) further comprises:
opening a first control valve (43) and a second control valve (46) of the vacuum generating device (40) to enable a heat transfer medium in a liquid storage tank (44) to enter a hollow interlayer (52) formed between a heat insulation cover (12) and a base (11) of the vacuum generating device (40);
closing the second control valve (46) when the amount of the heat transfer medium entering the hollow interlayer (52) reaches a preset amount;
closing the first control valve (43) and the vacuum pump (41) of the vacuum generating device (40) after the pressure value in the hollow interlayer (52) reaches a preset pressure;
starting a heating part (60) of the yoghurt fermentation device to heat a heat transfer medium in the hollow interlayer (52) so as to enable the temperature in the hollow interlayer (52) to reach a second preset temperature;
after the heating part (60) heats the heat transfer medium for a second preset time, the second control valve (46) is opened to reflux the heat transfer medium remained in the hollow interlayer (52) into the liquid storage tank (44), and the vacuum pump (41) is opened to discharge the steam generated in the hollow interlayer (52).
8. The method of claim 7, wherein the step of activating the vacuum generating means (40) further comprises:
a circulation pump (47) provided on a first pipe (441) of the tank (44) is activated to bring the heat transfer medium into the hollow interlayer (52).
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| TW200518167A (en) * | 2003-11-21 | 2005-06-01 | Advanced System Technology Co Ltd | Vacuum system with sandwiched circular symmetric air exhausting |
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| CN109757557A (en) | 2019-05-17 |
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