CN109380457A - A kind of food vacuum roasting plant - Google Patents
A kind of food vacuum roasting plant Download PDFInfo
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- CN109380457A CN109380457A CN201811059271.9A CN201811059271A CN109380457A CN 109380457 A CN109380457 A CN 109380457A CN 201811059271 A CN201811059271 A CN 201811059271A CN 109380457 A CN109380457 A CN 109380457A
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- A—HUMAN NECESSITIES
- A21—BAKING; EDIBLE DOUGHS
- A21B—BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING
- A21B5/00—Baking apparatus for special goods; Other baking apparatus
- A21B5/02—Apparatus for baking hollow articles, waffles, pastry, biscuits, or the like
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Abstract
The invention belongs to food apparatus fields, specifically disclose a kind of food vacuum roasting plant, including feeder, apparatus for baking and vacuum plant.Apparatus for baking side is suitable for that gate is arranged with sealing means at the entrance that food is inputted and exported, and is set in the roasted room of apparatus for baking and spills gas head and capture gas head, the support baking tray suitable for carrying food suitable for carrier gas is equally distributed；Feeder is connected to gas head is spilt, the delivery of carrier gas into roasted room；Vacuum plant is connected to prisoner's gas head, for providing vacuum environment for roasted room, is toasted in the vacuum environment with carrier gas suitable for food.It manipulates roasting plant and generates vacuum environment, food is first by vacuum boiling expanding treatment, then the baked food in the vacuum environment with carrier gas.Baked food in vacuum environment, the crisp brittleness of food and crisp uniformity obtain improving significantly, and baking volatile matter is discharged in carrier gas in time, and the rotten object of Oxidation of Fat and Oils in food, oxygen residual quantity are less, are conducive to the preservation of food, the shelf-life can be improved 0.5-1 times.
Description
Technical field
The present invention relates to a kind of food baking equipment more particularly to a kind of baked goods in the vacuum environment with carrier gas
Food vacuum roasting plant, belong to food apparatus field.
Background technique
Crisp brittleness bakery product, such as walnut cake, biscuit, purple sweet potato are dry, potato chips food, various in style, flavor is different, deep by people
Like, in order to keep good crisp brittleness, reduce preservative dosage, often need that a large amount of greases and swelling agent is added, reduce
The hardened property of food, the crisp brittleness of Lai Tigao food, especially crisp uniformity improve mouthfeel.Current food baking equipment, exists
Food is toasted in air environment, food bears atmospheric pressure, and hardly possible expands, is easy to harden, and the crisp brittleness of roasted product is poor；
Baking temperature be up to 190 DEG C or more it is even higher, roasted room vaporization at high temperature goes out micro metal ion gas, and the grease in food is direct
It is acted on the oxygen in air, grease generates the rotten object of Oxidation of Fat and Oils, oxygen through high-temperature oxydation and metal catalytic hydroperoxidation reaction
Change rotten object and promote grease high-temperature oxydation again, accelerate the oxidation rate of grease, generates more Oxidation of Fat and Oils harmful to health and become
Matter object increases the ability of capture food product oxygen, and oxidative rancidity easily occurs in preservation and goes bad for food, and the shelf-life is short.Thus, it needs out
Send out food vacuum roasting plant a kind of, to overcome the above-mentioned problems in the prior art.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provides a kind of food vacuum roasting plant, vacuum baked food,
Food receiving atmospheric pressure is small, and easy extruding, food crisp brittleness, which is mentioned, to be obviously improved, and carrier gas is discharged in time toasts volatile matter, in food
Go bad object, oxygen residual quantity of Oxidation of Fat and Oils it is less, be conducive to the preservation of food.
Technical scheme is as follows:
A kind of food vacuum roasting plant, the design points are including:
Feeder, the carrier gas constituted suitable for supplying inert gas, the feeder include successively being sealed by pipeline
Connection generates the gasifier of gaseous state carrier gas, suitable for depositing suitable for the air reservoir of storing liquid carrier gas, suitable for liquefied carrier gas gasifies
The temporary storage tank for storing up gaseous state carrier gas produced by gasifier and the pressure reducing valve suitable for reducing carrier gas output pressure and pressure stabilizing；
Apparatus for baking, suitable for the baked food in the vacuum environment with carrier gas, the inside of the apparatus for baking is set
Roasted room suitable for baked goods；It is roasting that the support arranged in the horizontal direction for being suitable for carrying food to be baked is set in the roasted room
Disk, the prisoner's gas head for spilling gas head, being sucked discharge suitable for carrier gas suitable for carrier gas to be shunted to guiding flow direction support baking tray；It is described to spill gas head
It is horizontally set, positioned at the top of support baking tray, prisoner's gas head is horizontally set, positioned at the lower section of support baking tray；It is set in the roasted room
The temperature sensor for being adapted to detect for being baked food temperature is set, apparatus for baking is assembled the vacuum for being adapted to detect for roasted room vacuum degree
Meter；
The gas head that spills includes suitable for by isocon that carrier gas shunts, along the horizontal plane multiple being parallel to each other of arranging of direction
Diversion pipe, the input port suitable for carrier gas input is set on the isocon, be connected with the input port be suitable for carrier gas shunting
Multiple delivery outlets；The input port of the delivery outlet of the isocon and each diversion pipe seals circulation respectively, is set on diversion pipe
Multiple flow-guiding mouths positioned at its lower end surface, it is opposite with support baking tray, suitable for the carrier gas in diversion pipe is shunted guiding flow direction support baking tray；
The delivery outlet of the pressure reducing valve is connected to through the 1st valve with the sealing of the input port of isocon；
Vacuum plant, the vacuum environment being suitable for needed for roasted room provides, the vacuum plant includes being suitable for of being sequentially communicated
It filters out the filter of mist of oil and particulate matter and is adapted to provide for the vacuum pump of vacuum environment；Prisoner's gas head is suitable for what carrier gas was discharged
Delivery outlet is connected to the sealing of the input port of filter；
The entrance for inputting and exporting suitable for food is set in the side of the apparatus for baking, to seal at the entrance
Gate is arranged in mode, is suitable for roasted room and air insulated, food to be baked is baked in the vacuum environment with carrier gas.
In the application, there are also following optional technical solutions by the present invention.
Optionally, prisoner's gas head is the shell structure being made of wall, is set on the top end face of prisoner's gas head multiple
Prisoner's stomata annular in shape for being flowed into suitable for carrier gas, internal setting along the horizontal plane the horizontally disposed diversion cavity in direction, set on bottom face
The exhaust outlet for being adapted to exhaust pipe is set, the exhaust outlet of prisoner's gas head is connected with the input port of filter through exhaust pipe, fits
Vacuum environment is maintained in vacuum pump pumping exhaust.
Optionally, the apparatus for baking further includes flowing grid, is arranged on and spills gas head and hold in the palm close between baking tray
The first side of gas is spilt, suitable for spilling gas head and holding in the palm being uniformly distributed for the carrier gas stream between baking tray.
Optionally, the stream grid at least by the lateral homogenizing plate of equidistantly distributed along longitudinal direction, transversely etc. between
Longitudinal homogenizing plate away from distribution is constituted；The transverse direction homogenizing plate, longitudinal homogenizing plate are arranged in a vertical direction, and lateral homogenizing plate is indulged
It is intertwined to form lattice-shaped to homogenizing plate.
Optionally, spoiler in long strip is set in the surrounding avris for flowing grid respectively, along vertical side
To arrangement, the lower end of spoiler is inclined outwardly relative to upper end；The spoiler head and the tail for flowing grid surrounding, which are sequentially connected, to be surrounded down
End opening is greater than the apron shape structure of upper end opening.
Optionally, the apparatus for baking further includes obstructing grid, is arranged on close between support baking tray and prisoner's gas head
Baking tray side is held in the palm, suitable for holding in the palm baking tray and captureing being uniformly distributed for the carrier gas stream between gas head.
Optionally, the grid that obstructs at least disturbs plate, transversely equidistant by the transverse arrest of equidistantly distributed along longitudinal direction
The vertical of distribution obstructs plate composition；The transverse arrest disturb plate, it is vertical obstruct plate and be arranged in a vertical direction, the transverse arrest disturbs plate, vertical obstructs plate
It is intertwined to form trellis.
Optionally, current limiting plate in long strip is set in the surrounding avris for obstructing grid respectively, along vertical side
To arrangement, the upper end of current limiting plate is inclined outwardly relative to lower end；The current limiting plate head and the tail for obstructing grid surrounding, which are sequentially connected, to be surrounded
End opening is greater than the apron shape structure in handstand of lower ending opening.
Optionally, the quantity of the flow-guiding mouth for spilling gas head is corresponding with the quantity of food on support baking tray is placed in,
The quantity for captureing prisoner's stomata of gas head is corresponding with the quantity of food on support baking tray is placed in.
Optionally, the carrier gas is at least one of nitrogen, argon gas, helium.
Food vacuum roasting plant of the invention is configured to be suitable for the baking of the baked goods in the vacuum environment with carrier gas
Roasting device, the feeder suitable for apparatus for baking delivery of carrier gas, sensor group, valve group and suitable for make apparatus for baking maintain institute
Need the vacuum plant of vacuum environment.The gate for manipulating apparatus for baking is opened, and food to be baked is transferred to by manipulation apparatus for baking
In apparatus for baking, closing gate is manipulated, apparatus for baking is in the state being isolated with outside air；Manipulate the 2nd valve opening stream
Logical, manipulation vacuum pump startup, vacuumizes flow path circulation, and suction discharge bakes indoor air, obtains vacuum environment；Obtain vacuum meter
Measured value be in higher vacuum degree when the measured value, which is less than the predetermined vacuum in baking process, spends, moisture in food
Vacuum boiling gasification, food product forms air porous expanded, by vacuum boiling extruding, is kept for the preset period, food is abundant
Extruding；Then, it then manipulates the 2nd valve and turns aperture, manipulation the 1st valve opening circulation down, the delivery of carrier gas into roasted room makes roasted room
Air pressure increases, when the measured value of gauge feedback reaches the setting value of the baking vacuum degree in baking process, manipulation baking dress
Set starting heating；Obtain the measured value of the temperature of temperature sensor detection and the setting value of the baking temperature in baking process, behaviour
Vertical apparatus for baking adjustment heating presses Roaster so that the measured value of temperature reaches setting value in the vacuum environment with carrier gas
The temperature baked goods set in skill stop when completing baking；After the completion of food is baked, the 2nd valve of manipulation is closed, is grasped
Vertical vacuum pump stops, and makes to restore normal pressure, the cooling food in carrier gas environment in roasted room.
Compared with prior art, the present invention achieves following beneficial technical effect.
The baked food in the vacuum environment with carrier gas, the crisp brittleness of food and crisp uniformity are significantly changed
It is kind；High vacuum pretreatment is carried out to food before roasting, the moisture ebullition, gasification in food, food product forms air porous expanded, food
By vacuum boiling extruding, expansion rate is enhanced, and the crisp brittleness of institute's baked food obtains further improving, and food hardness can be with
Reduce by 15% or more.The grease of food volatilization, trace metal ion gas of roasted room volatilization etc. are discharged in time and toasts volatile matter for carrier gas
And the air of leakage, the grease in food is difficult to happen high-temperature oxydation and metal catalytic hydroperoxidation reaction generates oxidation deterioration
Object；Not as good as conventional roasted 10%, the oxygen uptake ability of food is greatly reduced the content of the rotten object of Oxidation of Fat and Oils in food, is had
Conducive to the health of eater；Food toasted in vacuum environment and carrier gas environment in it is cooling, the oxygen residual quantity in food is extremely low.Cause
And the roasted food of institute is easier to save, the shelf-life improve 0.5-1 times and its more than.
Detailed description of the invention
In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application, for
For those of ordinary skill in the art, without any creative labor, it can also be obtained according to these attached drawings
His attached drawing.
The schematic diagram of one of Fig. 1 embodiment food vacuum roasting plant.
The schematic diagram of Fig. 2 apparatus for baking.
The schematic diagram of Fig. 3 feeder.
Fig. 4 is the direction the A-A schematic cross-sectional view of apparatus for baking in Fig. 2.
The schematic diagram of Fig. 5 another kind apparatus for baking.
Fig. 6 is the elevational schematic view that gas head is spilt in Fig. 2.
Fig. 7 is the elevational schematic view that grid is flowed in Fig. 2.
Fig. 8 flows grid and spills the elevational schematic view after gas head mutually assembles.
Fig. 9 is the schematic top plan view that gas head is captureed in Fig. 2.
Figure 10 is the schematic top plan view that grid is obstructed in Fig. 2.
Figure 11 obstructs grid and capturees the schematic top plan view after gas head mutually assembles.
Wherein, 10- feeder, 11- air reservoir, 12- gasifier, 13- temporary storage tank, 14- pressure reducing valve, 20- apparatus for baking,
21- holds in the palm baking tray, and 22- spills gas head, 221- isocon, 222- diversion pipe, 223- flow-guiding mouth, and 23- flows grid, and 231- laterally flows
Plate, the longitudinal direction 232- homogenizing plate, 233- spoiler, 24- capture gas head, 241- diversion cavity, and 242- capturees stomata, and 25- obstructs grid, 251-
Transverse arrest disturbs plate, and 252- is vertical to obstruct plate, 253- current limiting plate, 26- gate, 30- vacuum plant, 31- filter, 32- vacuum pump, 41-
1st valve, the 2nd valve of 42-, 51- vacuum meter, 52- temperature sensor, 53- lambda sensor.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.Related directionality instruction in the embodiment of the present invention (such as upper and lower, left and right,
It is forward and backward etc.) it is only used for the relative positional relationship explained under a certain particular pose (as shown in the picture) between each component, movement feelings
Condition etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
As a kind of embodiment of the application, a kind of food vacuum roasting plant is provided, it is as shown in Figure 1-Figure 11, described
Food vacuum roasting plant includes feeder 10, apparatus for baking 20, vacuum plant 30, valve group and sensor group.Sensor
Group includes vacuum meter 51, temperature sensor 52, lambda sensor 53；Valve group includes the 1st valve 41, the 2nd valve 42.Feeder
10 are suitable for providing carrier gas to apparatus for baking 20, which is suitable for the air leaked setting out baking volatile matter in time；Baking
Device 20 is suitable for the baked goods in the vacuum environment with carrier gas；Vacuum plant 30 is adapted to provide for apparatus for baking baked goods institute
The vacuum environment needed.The input for being suitable for carrier gas input of the delivery outlet and apparatus for baking 20 for being suitable for carrier gas output of feeder 10
Mouth is connected in a sealing fashion by gas pipeline, suitable for delivery of carrier gas in the roasted room to apparatus for baking；Apparatus for baking 20 is suitable for
Connected in a sealing fashion between the delivery outlet of carrier gas output and the input port for being suitable for aspirating carrier gas of vacuum plant 30 by pump-line
It is logical, indoor air is baked so that the roasted room of apparatus for baking maintains vacuum environment required for toasting suitable for aspirating discharge.Baking dress
20 are set to be suitable for gate 26, i.e. apparatus for baking is arranged with sealing means at food input and suitable for food output entrance
20 food delivery outlet and food input port share an entrance, and food and air are isolated by gate 26, are having food
It is baked under the vacuum environment for having carrier gas.Roasting plant of the present invention baked goods in vacuum environment, food receiving atmospheric pressure is small, no
Easy to harden, the crisp brittleness of roasted product and crisp uniformity are mentioned and being obviously improved；High vacuum boiling can be carried out to food before roasting
Expanding treatment, further to improve the crisp brittleness of food；The then baked goods under vacuum degree appropriate；After the completion of baking,
Cooling food in carrier gas environment, preferably normal pressure carrier gas environment.Above-mentioned vacuum boiling expanding treatment need to carry out in high vacuum environment,
If vacuum pressure is less than 50 pas, at normal temperature, the moisture ebullition, gasification in food, food surface pressure is close to zero, moisture gas
Change expansion to promote to form stomata in food, food is inflated bulk, and instant food is swollen to the abundant vacuum boiling of food by reason object extruding
After change, then toast in the vacuum environment of certain pressure intensity, if toasted in vacuum environment that vacuum pressure is 1000-1500 pa, institute
The hardness of baked food can reduce by 15% or more, and the crisp brittleness of food and crisp uniformity obtain improving significantly, mention
High mouthfeel, is also beneficial to reduce the dosage of grease and swelling agent, is more advantageous to health.The oil of food volatilization is discharged in carrier gas in time
The micro-air that rouge, trace metal ion gas of roasted room volatilization etc. toast volatile matter and discharge apparatus for baking is leaked in time,
Grease in food is difficult to happen high-temperature oxydation and metal catalytic hydroperoxidation reaction generates oxidation deterioration object.In institute's baked food
Oxidation of Fat and Oils go bad object content not as good as conventional roasted 10%, the oxygen uptake ability of food is greatly reduced, the oxygen in food
Residual quantity is extremely low, and food is easier to save, and the shelf-life can be improved 0.5-1 times, or even have the longer shelf-life.
Wherein, the feeder 10, as shown in figure 3, including air reservoir 11, gasifier 12, temporary storage tank 13 and pressure reducing valve
14.Air reservoir 11 is suitable for the carrier gas of storing liquid, such as High Purity Nitrogen, and optional purity reaches analytically pure food-grade liquid nitrogen.Gasifier
12 are suitable for the nitrogen endothermic gasification of liquid forming gaseous nitrogen；Pressure reducing valve 14 be suitable for by the higher nitrogen of pressure become pressure compared with
The stable nitrogen of low pressure.The delivery outlet for being suitable for liquid nitrogen outflow of the air reservoir 11 passes through liquid nitrogen pipes and gasifier 12
Input port is connected, and flow control valve is arranged in the liquid nitrogen pipes between connection air reservoir 11 and gasifier 12, to adjust liquid
The flow of nitrogen adjusts the quantum of output of nitrogen, is allowed to match with demand, avoids nitrogen pressure excessively high.Gasifier 12 is suitable for
The delivery outlet of nitrogen outflow is connected to the input port that carrier gas flows into that is suitable for of temporary storage tank 13 by pipeline in a sealing fashion.Temporary storage tank
It is connected in a sealing fashion between 13 delivery outlet and the input port of pressure reducing valve 14 for being suitable for carrier gas outflow by pipeline, pressure reducing valve 14
Delivery outlet be suitable for 20 delivery of nitrogen carrier gas of cooling device.The use of temporary storage tank 13 can make the supply gas pressure of carrier gas more stable.
The nitrogen selects purity to reach analytically pure food-grade nitrogen, and purity can also be selected to reach 99% or more food-grade nitrogen
Gas is understood to be above-mentioned high pure nitrogen.The nitrogen can also be substituted by argon gas or helium.
Wherein, the apparatus for baking 20, as shown in Fig. 2, Fig. 4, Fig. 5, the shell including sealing may be implemented, in shell
Roasted room suitable for baked goods is set, thermal insulation layer is set between roasted room and shell.The front side of apparatus for baking 20, which is set, to be suitable for wait dry
Roasting product move into and are adapted to carry out the entrance that roasted food removes, and gate 26 is arranged in a sealing fashion in the entrance,
Suitable for food to be baked is isolated with air, vacuum environment needed for forming baked goods in roasted room.The apparatus for baking
The support baking tray 21 arranged in the horizontal direction for being suitable for carrying food to be baked is set in 20 roasted room, suitable for leading carrier gas shunting
Drain the prisoner's gas head 24 for spilling gas head 22, being discharged suitable for carrier gas to support baking tray 21.The gas head 22 that spills is by direction water along the horizontal plane
Flat setting, positioned at the top of support baking tray 21, prisoner's gas head 24 is horizontally disposed with by direction along the horizontal plane, positioned at the lower section of support baking tray 21.
Gas head 22, support baking tray 21, the prisoner's gas head 24 of spilling is arranged parallel, just opposite in perpendicular true direction, that is, it is roasting in support to spill gas head 22
The surface of disk 21, prisoner's gas head 24 is in the underface in support baking tray 21.The upper avris and lower avris for holding in the palm baking tray 21 are set respectively
Heater (is not drawn into) in figure, i.e. upper heater, lower heater, is suitable for uniform baked goods.It is set and is suitable in the roasted room
Detection is baked the temperature sensor 52 of the temperature of food, it can be understood as detects the baking temperature of food to be baked, baking dress
Lambda sensor 53 is set in the exhaust pipe set, suitable for judging that whether there is or not be fully drained and whether there is or not air leakages roasting room air
Into roasted room.Specifically, the emptying reference point by measured value that lambda sensor 53 is fed back in baking process compares, when the survey
Magnitude be less than emptying reference point when, can make bake indoor air be fully drained or without air leakage judgement, otherwise can make
The judgement that indoor air is not fully drained or is free air infiltration leakage is baked out.The pressure reducing valve 14 of feeder 10 be suitable for carrier gas it is defeated
Delivery outlet out is connected to through the 1st valve 41 with the input port sealing for being suitable for carrier gas input for spilling gas head 22.On the support baking tray 21
It is equipped with the netted hole suitable for the upper and lower free flow of carrier gas, is carried out in the vacuum environment with carrier gas for carrying food
Baking and cooling, can also be mesh belt, be also possible to steel band or it is any suitable for support food and can make on gas,
The load-bearing part of lower free flow.
Wherein, the vacuum plant 30, vacuum environment needed for being adapted to provide for food baking, the vacuum plant 30 include
Filter 31, vacuum pump 32.Filter 31 is adapted to filter out mixed mist of oil and particulate matter from the carrier gas being discharged in apparatus for baking,
Vacuum environment needed for vacuum pump 32 is suitable for maintaining baked goods in the roasted room of apparatus for baking.The carrier gas that is suitable for of filter 31 inputs
Input port be suitable for the delivery outlet of carrier gas output with prisoner's gas head 24 between be connected in a sealing fashion by pump-line, the exhaust tube
Metal bellows can be selected in road.The lambda sensor 53 is assembled in the pump-line, is adapted to detect for containing for carrier gas be discharged
Oxygen amount, baking indoor air with judgement, whether there is or not be fully drained or air has in undirected roasted room and leaks.
In addition, the roasting plant is also configured with vacuum controller and temperature controller, vacuum controller is for showing
The vacuum degree of the roasted room of apparatus for baking, temperature controller are used to show the temperature and A.T.C of roasted room.The vacuum control
Device processed, temperature controller are the prior art, and this will not be detailed here.
Described to spill the plate structure that gas head 22 is in plane, as shown in Fig. 2, Fig. 4, Fig. 5, direction is horizontally disposed along the horizontal plane.
Gas head 22 is spilt, as shown in figs. 4 and 6, including isocon 221, the horizontal cloth in direction along the horizontal plane for being suitable for shunting inputted carrier gas
The multiple diversion pipes 222 being parallel to each other set, diversion pipe 222 are arranged along the horizontal.It is set on the isocon 221 suitable for carrier gas
Multiple delivery outlets positioned at lower end for being connected positioned at the input port of upper end, with the input port of input, for will be inputted
Carrier gas uniform divided flows are transferred to respectively in each diversion pipe 222.It is set on diversion pipe 222 positioned at the defeated suitable for carrier gas of its top
The input port entered.The input port for being suitable for gas input of each diversion pipe 222 and the delivery outlet difference of isocon 221 are close
Envelope circulates, and multiple flow-guiding mouths 223 positioned at its lower end surface, the gas outlet of flow-guiding mouth 223 and support baking tray are set on diversion pipe 222
21 is opposite, suitable for the carrier gas in diversion pipe 222 to be shunted to and guided flow direction support baking tray 21, the food on baking tray 21 will be ask to be waved
The volatile substance of hair, the trace metal ion gas of roasted room vaporization at high temperature are taken away in time, discharge, advantageous to reduce grease in food
Oxidation.The delivery outlet of the pressure reducing valve 14 of the feeder 10 is connected to by gas pipeline with the sealing of the input port of isocon 221,
Carrier gas is transported to and is spilt in gas head 22, the 1st valve is assembled in the gas pipeline, for controlling feeder 10 to baking
Input carrier gas, stopping delivery of carrier gas and the feed flow for adjusting carrier gas in the roasted room of roasting device 20.Adjust the transport Stream of carrier gas
Measure the vacuum degree of adjustable roasted room.The lateral arrangement in the direction along the horizontal plane of diversion pipe 222, and along longitudinal direction it is equidistant uniformly point
Cloth, as shown in figs. 4 and 6, each diversion pipe 222 are connected to positioned at the input port for spilling 22 top of gas head respectively, are suitable for carrier gas point
It flows in each diversion pipe 222.Flow-guiding mouth 223 is arranged on the bottom face of diversion pipe 222, and flow-guiding mouth 223 and diversion pipe 222 connect
Logical, the flow-guiding mouth 223 on each branch diversion pipe 222 can be for plane, and the gas outlet of flow-guiding mouth 223 and support baking tray 21 are opposite, covering
Baking tray 21 is held in the palm, suitable for the carrier gas in diversion pipe 222 is blowed to support baking tray 21 by flow-guiding mouth 223, carrier gas stream is uniformly distributed, respectively
Flow direction is placed on each piece of food on support baking tray 21.The walking along the diversion pipe 222 of flow-guiding mouth 223 being connected with diversion pipe 222
To (i.e. laterally) equidistantly distributed, as shown in fig. 6, making being more evenly distributed for carrier gas stream to shunt carrier gas.Further
Ground, the middle part of diversion pipe 222 are set the input port suitable for carrier gas input, advantageously reduce the pressure drop difference in diversion pipe 222,
So that the carrier gas flux and flow velocity that each flow-guiding mouth 223 is flowed out are suitable, improve the uniformity of carrier gas stream distribution, advantageous food
By uniform baking, air-dry, it is ensured that food, such as walnut cake, biscuit, purple sweet potato are dry, potato chips, quality consistency, such as crisp brittleness, shortcake
Crisp uniformity is improved, and keeps crispy texture more preferable.As a kind of optional mode, the top of every piece of food on baking tray 21 is held in the palm
Respectively corresponding one flow-guiding mouth 223 of setting favorably ensures the one of food quality in this way, the operating condition of the carrier gas of every piece of food is suitable
Cause property.
Prisoner's gas head 24 is in the plate structure of plane, and as shown in Fig. 2, Fig. 4, Fig. 5, prisoner's gas head 24 is made of thin-walled
Shell structure, can be in bulk.It capturees and multiple prisoner's stomatas annular in shape flowed into suitable for carrier gas is set on the top end face of gas head 24
242, internal setting along the horizontal plane the horizontally disposed diversion cavity 241 in direction, setting is adapted to the row of exhaust pipe on bottom face
Port 243.Captureing stomata 242 is preferably annular shape, when bake indoor vacuum degree it is lower when, such as vacuumize initial stage, it is advantageous to reduce
Eddy flow is generated at prisoner's stomata 242 when vacuum pump vacuumizes, is uniformly distributed so as to bake indoor carrier gas stream.Capture the row of gas head 24
Port 243 is connected with one end of the exhaust pipe of apparatus for baking, the other end of the exhaust pipe and the filter of vacuum plant
31 input port is connected in a sealing fashion by pump-line, suitable for vacuum plant to being vacuumized in roasted room, the pump-line
The 2nd valve of middle assembly vacuumizes and blocks pumping is true to hold, and changes the vacuum degree of valve opening adjustment roasted room suitable for control.It is described
Lambda sensor 53 is assembled in the exhaust pipe, for judging roasting room air whether there is or not being fully drained, or for judging
Whether there is or not air to leak into roasted room.Specific judgment method is that the measured value for feeding back lambda sensor 53 is compared with emptying reference point
Compared with when the measured value is less than emptying reference point, it is believed that bake indoor air be fully drained or roasted room in without obvious empty
Otherwise air infiltration leakage is judged as that baking indoor air is not fully drained or has air to leak to roasted room.Prisoner's stomata 242 is set
Prisoner gas head 24 top end face on, be connected with diversion cavity 241, prisoner stomata 242 along longitudinal direction, it is laterally uniform, such as Fig. 9 institute
Show, prisoner's stomata 242 embark on journey distribution, at column distribution, capable and in the ranks equidistantly distributed between equidistantly distributed, column and column.Capture stomata 242
Air inlet be oppositely arranged with support baking tray, flow into prisoner's stomata convenient for the carrier gas that flows from the top to the bottom.The use of carrier gas is conducive to dry
The micro metal ion gas that 20 vaporization at high temperature of roasting device goes out take out of in time roasted room it is outer, in time by the grease of food high temperature volatilization and
When take out of outside roasted room, i.e., by carrier gas vacuum plant by toast volatile matter take roasted room out of in time, be favorably further reduced in food
Grease occur metal catalytic hydroperoxidation reaction, reduce deleterious oxidation go bad substance generation.It should be noted that when to roasting
When uniformity requirement processed is not high, prisoner's gas head 24 can also be substituted by funnelform exhaust apparatus, as shown in figure 5,
It can also be expelled directly out using gas vent.
Before baked food, need to formulate baking process corresponding with the food.Above-mentioned baking process includes default true
The setting value of reciprocal of duty cycle and the carrier gas parameter joined with time correlation, baking vacuum degree, the setting value of baking temperature.The carrier gas ginseng
Amount includes vacuum pump start and stop state, the 1st valve opening and closing and aperture state, the 2nd valve opening and closing and aperture state.Wherein predetermined vacuum
Degree for characterize it is roasting before need to treat baked goods and carry out vacuum degree required for vacuum boiling expanding treatment, such as can be with value 50
Pa, then at room temperature, the moisture of food ebullition, gasification the experiment has found that the vacuum degree of vacuum boiling expanding treatment is higher, food
Interior moisture vaporization is fiercer, and food vacuum expansion rate is higher, and the crisp brittleness of roasted product is also better, but mentioning with vacuum degree
Height, cost quickly increase.
The gate for manipulating apparatus for baking 20 is opened, and food to be baked is transferred in the roasted room of apparatus for baking 20, is manipulated
Closing gate.It manipulates roasting plant and vacuum boiling expanding treatment first is carried out, then with the true of carrier gas to food to be baked
Baked goods and the cooling food in carrier gas environment in Altitude.It manipulates the 2nd valve 42 movement circulation, manipulate the true of vacuum plant
Apparatus for baking is baked indoor air suction discharge by empty pump startup, and roasted room is evacuated, true needed for baked goods to obtain
Empty condition.The measured value of vacuum meter 51 is obtained, it is when the measured value that gauge 51 is fed back is spent less than predetermined vacuum, i.e., right before baking
High vacuum condition needed for food carries out vacuum boiling extrusion pretreatment, as vacuum degree reaches 50 pas, at room temperature, food
Contained moisture ebullition, gasification simultaneously expands, and food surface pressure is low, and close to zero, food is expanded by vacuum gasifying, food it is swollen
Rate is improved, and under the vacuum condition, is kept for the preset period, and food is made sufficiently to gasify expansion, so that institute is roasted
Food is more crisp, crisp uniformity is more preferable.Then, the 1st valve 41 of manipulation circulates the delivery of carrier gas into roasted room, makes the vacuum of roasted room
Degree reduces, and when the measured value that gauge 51 is fed back reaches the setting value of the baking vacuum degree obtained from baking process, such as reaches
1500 pas, the manipulation starting heating of apparatus for baking 20, the baked goods in the vacuum environment with carrier gas.Obtain temperature sensor 52
The setting value of the measured value of the temperature of detection and the baking temperature obtained from baking process, the manipulation adjustment heating of apparatus for baking 20,
So that the measured value of temperature reaches setting value, by the baking temperature of setting in vacuum environment baked goods, until completing food
Baking when stop.During baking, the trace metal ion gas of roasted room vaporization at high temperature is taken out of outside roasted room in time, in time will by carrier gas
The grease of food high temperature volatilization is taken out of outside roasted room in time, and high-temperature oxydation and metal occur for the grease being favorably further reduced in food
It is catalyzed hydroperoxidation reaction, reduces the generation of oxidation deterioration substance harmful to health.Food is completed after baking, manipulates the 2nd valve
Door is closed, manipulation vacuum pump stops, and makes to restore normal pressure in the roasted room of apparatus for baking 20, by food cooling in carrier gas environment.?
Baked food in vacuum environment with carrier gas, the atmospheric pressure that food is born is small, not easy to harden, the crisp brittleness of roasted product and
Crisp uniformity improves in which may be significantly；Vacuum boiling expanding treatment carried out to food to be baked before roasting, in food
Moisture ebullition, gasification, shape stomata is inflated in food, and the expansion rate of food is improved, the crisp brittleness of institute's baked food obtain into
One step significantly improves, and food hardness can reduce by 15% or more.The grease of food volatilization is discharged in carrier gas in time, roasted room volatilizees
Trace metal ion gas etc. toasts volatile matter, and the rotten object of the Oxidation of Fat and Oils in food and oxygen less residue are conducive to the guarantor of food
It deposits, 0.5-1 times, or even longer time can be improved in the shelf-life of food.The content of the rotten object of Oxidation of Fat and Oils in food is few, also more
Be conducive to health.
Further, in order to avoid the carrier gas flowed out from flow-guiding mouth 223 generates turbulent flow, carrier gas stream is made to be evenly distributed, it is ensured that
The consistency of food quality, especially crisp uniformity, need spill gas head 22 and support baking tray 21 between setting be suitable for stream and it is steady
The stream grid 23 of stream, stream grid 23 are mutually fixed with gas head 22 is spilt.It is described to flow grid 23, as shown in Fig. 2, Fig. 4-Fig. 8, packet
Include lateral homogenizing plate 231 and longitudinal homogenizing plate 232.The transverse direction homogenizing plate 231, it is equidistant equal along longitudinal direction as shown in Fig. 2, Fig. 7
Even distribution, lateral homogenizing plate 231 is mutually perpendicular with horizontal plane side, i.e., perpendicular with the bottom face that spills gas head 22, it will be appreciated that for cross
It is arranged in a vertical direction to homogenizing plate 231；Longitudinal homogenizing plate 232 is transversely equidistantly uniformly distributed as shown in Fig. 2, Fig. 7, is indulged
It is perpendicular to homogenizing plate 232 and horizontal plane direction, i.e., it is perpendicular with the bottom face that spills gas head 22, it will be appreciated that for longitudinal homogenizing plate
232 are arranged in a vertical direction.The transverse direction homogenizing plate 231 is intertwined and fixes with longitudinal homogenizing plate 232, forms " well " shape
Lattice structure, suitable for force from flow-guiding mouth 223 flow out carrier gas along flow grid grid flow downward, blow and penetrate food,
The component flowed in the horizontal direction is generated to avoid the carrier gas that flow-guiding mouth 223 flows out, or even generates turbulent flow, makes the flow field point of carrier gas
Cloth more evenly, with ensure under carrier gas environment roasted food quality uniformity it is more preferable, as color evenness, it is crisp uniformly
Property, mouthfeel is improved, the really up to the mark, poor taste to avoid the food that has.It is given birth to overcome the roasted room wall of apparatus for baking 20 to miscarry carrier gas
Disturbing influence, flow grid 23 surrounding avris spoiler 233 is respectively set, as shown in Fig. 2, Fig. 7,233 edge of spoiler
Vertical direction arrangement, the lower end of spoiler 233 is relative to the upper end inclination (i.e. for the middle part for flowing grid 23) outward.
Head and the tail positioned at four pieces of spoilers 233 for flowing 23 4 avris of grid are in turn connected to form apron shape structure, as shown in Fig. 2, should
The opening inside diameter of the big upper end of opening inside diameter of the lower end of apron shape structure.Further, based on a large amount of practical data analysis hair
It is existing, when the lower end of spoiler 233, which is inclined outwardly 11-18 along the vertical direction, to be spent, when special 13-14 is spent, the roasted room of apparatus for baking
Wall is formed on the equally distributed influence minimum of 22 air-flow of gas head, the periphery for spilling gas head 22 is spilt without apparent turbulent flow, and the stream of gas head 22 is spilt
Carrier gas stream out is more evenly distributed, and is conducive to improve the crisp uniformity of food.
Further, it is uniformly distributed generation disturbing influence in order to reduce the suction carrier gas of prisoner's gas head 24 to carrier gas stream, destroyed
The uniformity of carrier gas stream distribution, it is ensured that the consistency of food quality, especially crisp uniformity are then needed in support baking tray 21 and prisoner
Setting obstructs grid 25 between gas head 24, as shown in Fig. 2, Figure 10.It obstructs grid 25 and prisoner's gas head 24 is fixed, close to support baking tray 21
Side, positioned at prisoner gas head 24 surface.Described to obstruct grid 25, as shown in Fig. 2, Figure 10, including transverse arrest is disturbed plate 251 and is indulged
Obstruct plate 252.The transverse arrest disturbs plate 251, and as shown in Fig. 2, Figure 11, lateral arrangement, equidistant uniform along longitudinal direction in the horizontal direction
Distribution, transverse arrest disturbs plate 251 and horizontal plane direction is perpendicular, it will be appreciated that disturbs plate 251 for transverse arrest and is arranged in a vertical direction；The vertical resistance
Plate 252 is disturbed, as shown in figure 11, arranges, is distributed along longitudinal direction in the horizontal direction, be transversely equidistantly uniformly distributed, it is vertical to obstruct plate 252
It is perpendicular with horizontal plane direction, it will be appreciated that obstruct plate 252 to be vertical and be arranged in a vertical direction.The transverse arrest is disturbed plate 251 and is obstructed with vertical
Plate 252 is intertwined, and fixed, forms the grid of " well " shape, asks the netted hole of baking tray 21 defluent suitable for guiding to pass through
Carrier gas flows downward, flow direction prisoner's gas head 24, flows into prisoner's stomata 242, and gas head 24 of being captured is captured and by exhaust pipe by vacuum pump
Suction discharge.When carrier gas can be captured to avoid prisoner's suction of gas head 24 by obstructing the use of grid 25, especially when vacuum degree is lower, such as
Vacuumize initial stage roasting room pressure it is higher when, since vacuum pump vacuumizes, the throughput of pumping exhaust is big, gas velocity is high, respectively
The flow resistance difference of a prisoner's stomata 242 leads to the flow path overbending of carrier gas, or even generates turbulent flow, will destroy carrier gas stream distribution
Uniformity is uniformly distributed generation disturbing influence closely and to the carrier gas stream spilt between gas head 22 and support baking tray 21, destroys air-flow
Turbulent flow can be generated in the air-flow of uniformity or even flow-guiding mouth 223 outflow of distribution, the uniform of food is influenced and air-dries, lead to food
The uniformity (i.e. consistency) of quality is deteriorated.The setting for obstructing grid 25 can make to spill gas head 22, support baking tray 21, prisoner's gas head 24 it
Between the uniformity of carrier gas stream be further improved so that in the vacuum environment with carrier gas roasted food quality
Consistency is more preferable, and such as crisp uniformity, color evenness are more preferable, and to improve mouthfeel, the food being effectively prevented from is excessively hard, has
Food it is excessively crisp, some by owe coloring, some by cross is coloured, the yields of food mentions raising.In addition, in order to overcome
The air-flow that the roasted room wall of apparatus for baking 20 captures gas to prisoner's gas head 24 generates disturbing influence, influences air-flow and is uniformly distributed, is hindering
Current limiting plate 253 is respectively set in the surrounding avris for disturbing grid 25, and as shown in Fig. 2, Figure 10, current limiting plate 253 is in the plate of long strip type, edge
Vertical direction setting, the upper end of current limiting plate 253 is relative to the lower end inclination (relative to the central part for obstructing grid 25) outward.Four pieces
The head and the tail of current limiting plate 253 are in turn connected to form in the apron shape structure stood upside down, and as shown in Fig. 2, Figure 11, current limiting plate 253 is constituted
The upper end opening of apron shape structure be greater than its lower ending opening, be conducive to carrier gas to be discharged and flow into prisoner's gas head 24 to be discharged.It is based on
A large amount of Experimental comparison's discovery, when the upper end side of current limiting plate 253 is spent relative to vertical direction outer incline 20-26, special 22-24
When spending, the roasted room wall of apparatus for baking 20 is minimum to the equally distributed disturbing influence of carrier gas stream, at the surrounding avris for captureing gas head 24
No apparent turbulent flow is formed, and the uniformity of the carrier gas stream in the region is preferable, and correspondingly, suction prisoner's gas of prisoner's gas head 24 is to spilling gas
It influences also further to be reduced caused by first 22, the uniformity for spilling the carrier gas stream distribution of the outflow of gas head 22 is obtained into one
Step it is effectively improved.
The food vacuum roasting plant of present embodiment be configured be suitable in vacuum environment the apparatus for baking of baked goods,
Suitable for apparatus for baking delivery of carrier gas feeder, sensor group, valve group and suitable for make apparatus for baking maintain needed for vacuum
The vacuum plant of environment.Based on prepared baking process, the gate for manipulating apparatus for baking is opened, and manipulation apparatus for baking will be wait dry
Roasting food is transferred in apparatus for baking, manipulates closing gate, and apparatus for baking is in the state being isolated with outside air；It is based on
Baking process, the circulation of the 2nd valve opening of manipulation, manipulation vacuum pump startup vacuumize flow path circulation, and indoor sky is baked in suction discharge
Gas obtains vacuum environment；The measured value for obtaining vacuum meter is suitable for keeping preset when the measured value is spent less than predetermined vacuum
Period treats baked goods and carries out vacuum boiling expanding treatment；Then, then manipulate the 2nd valve turn down aperture, manipulation the 1st valve
Door opens circulation, and the delivery of carrier gas into roasted room increases the air pressure of roasted room, and the measured value of gauge feedback reaches baking process
Baking vacuum degree setting value when, manipulation apparatus for baking starting heating；Obtain the measured value of the temperature of temperature sensor detection
And the setting value of the baking temperature of baking process, manipulation apparatus for baking adjustment heating, so that the measured value of temperature reaches setting value,
By the temperature baked goods set in baking process in the vacuum environment with carrier gas, stop when completing baking.
Embodiment
The walnut cake example illustrates the roasted 2 batch walnut cake of institute, raw material charge ratio, the manufacture craft of the 2 batch walnut cake altogether
It is all the same, it is not added with preservative, is toasted and is cooled down using above-mentioned food vacuum roasting plant.1st batch walnut cake exists
It is toasted in air environment, is cooling, vacuum packaging is sealed in air environment, selecting 10 pieces of walnut cakes at random from the roasted walnut cake of institute
Sample gives over to test, wherein 5 pieces of samples give over to retention cycle test, another 5 pieces of samples do the rotten object of Oxidation of Fat and Oils and hardness test；
2nd batch walnut cake is toasted and cooling in the vacuum environment with carrier gas, and vacuum packaging is sealed under air environment, from baking
10 pieces of walnut cake samples are selected in the walnut cake of system at random and give over to test, wherein 5 pieces of samples give over to retention cycle test, another 5 pieces of samples
Make the rotten object of Oxidation of Fat and Oils and hardness test.Oxidation of Fat and Oils in relation to sample goes bad object content, hardness test situation, such as one institute of table
Show；The test case of retention cycle in relation to sample, as shown in following table two.Wherein, for the needs of data processing, to grease oxygen
Change rotten object, hardness has made normalized respectively.
Table one: the Oxidation of Fat and Oils of walnut cake sample rotten object, hardness test situation
Note: the content of oil oxide does normalized, the hardness of walnut cake based on #11-1 sample in walnut cake
Normalized is done based on #11-1 sample
The data of table one show that the degree of oxidation that the grease in roasted walnut cake sample is carried out in air environment is larger,
The content of the rotten object of the Oxidation of Fat and Oils of sample is higher, and is carried out in roasted walnut cake sample in the vacuum environment with carrier gas
The degree of oxidation of grease significantly reduces, and the content of the rotten object of the Oxidation of Fat and Oils in sample is very low, is baked in air environment
Walnut cake sample compare, the Oxidation of Fat and Oils in the vacuum environment with carrier gas in roasted walnut cake sample go bad object content drop
Low 90% or more, not as good as 10% of roasted walnut cake sample in air environment, thus the oxygen uptake ability of walnut cake is greatly reduced,
It is more advantageous to the preservation of walnut cake, the shelf-life can be longer；On the other hand, the reduction of the rotten object content of Oxidation of Fat and Oils, is more advantageous to
Health.
The data of table one also show that the hardness of roasted walnut cake sample is larger in air environment, and with carrier gas
The hardness that roasted walnut cake sample is carried out in vacuum environment significantly reduces, compared with walnut cake sample roasted in air environment,
Less than institute roasted 85% in air environment, the crisp brittleness of walnut cake sample obtains the hardness of roasted walnut cake sample in vacuum environment
Improve to significant.It illustrates, the vacuum boiling expanding treatment before vacuum bakeout can effectively improve food crisp brittleness.
Table two: the test case of the shelf-life of walnut cake sample
Data in table two are shown, are toasted in air environment, cooling 5 pieces of prepared walnut cake samples, in air environment
Middle vacuum packaging, the shelf-life of 5 pieces of walnut cake samples, the shelf-life that is averaged was 92.8 days at 84-112 days；With nitrogen carrier gas
Vacuum environment in toast 5 pieces of prepared walnut cake samples, be vacuum-packed in air environment, which guarantees the quality
Phase is 168-208 days, and the shelf-life that is averaged is 186.6 days.I.e. in the vacuum environment with nitrogen carrier gas roasted walnut cake
Shelf-life is increased to the 2 times or more of former shelf-life, i.e. the shelf-life improves 1 times or more, and the shelf-life has obtained significant raising.
The biscuit example illustrates the roasted 2 batch biscuit of institute altogether, and the raw material ratio of each batch biscuit, manufacture craft are homogeneous
Together, it is not added with preservative, is toasted and is cooled down using above-mentioned food vacuum roasting plant.1st batch biscuit is in air
It is toasted in environment, is cooling, vacuum packaging is sealed in air environment, selecting 10 pieces of biscuit samples at random from the roasted biscuit of institute
Product, wherein 5 pieces of samples give over to retention cycle test, another 5 pieces of samples make the rotten object of Oxidation of Fat and Oils and hardness test；2nd batch cake
Baking and cooling in the vacuum environment with nitrogen carrier gas are done, and seals vacuum packaging in air environment, from the roasted cake of institute
10 pieces of biscuit samples are selected at random in dry, wherein 5 pieces of samples give over to retention cycle test, it is rotten that another 5 pieces of samples make Oxidation of Fat and Oils
Object and hardness test.Test case in relation to the rotten object content of sample Oxidation of Fat and Oils and hardness, as shown in Table 3；Related sample
The test case of retention cycle, as shown in following table four.Wherein, for data processing needs, go bad object, hardness point to Oxidation of Fat and Oils
Normalized is not made.
Table three: the Oxidation of Fat and Oils of biscuit sample rotten object content, hardness test situation
Note: the go bad content of object of Oxidation of Fat and Oils does normalized based on #31-1 sample in biscuit, biscuit it is hard
Degree does normalized based on #31-1 sample
The data of table three show that the degree of oxidation that the grease in roasted biscuit sample is carried out in air environment is larger,
The content of the rotten object of the Oxidation of Fat and Oils of sample is higher, and is carried out in roasted biscuit sample in the vacuum environment with carrier gas
The degree of oxidation of grease significantly reduces, and the content of the rotten object of the Oxidation of Fat and Oils in sample is very low, is baked in air environment
Biscuit sample compare, the Oxidation of Fat and Oils in the vacuum environment with carrier gas in roasted biscuit sample go bad object content drop
Low 90% or more, not as good as 10% of roasted biscuit sample in air environment, thus the oxygen uptake ability of biscuit is greatly reduced,
It is more advantageous to the preservation of biscuit, the shelf-life can be longer；On the other hand, the reduction of the rotten object content of Oxidation of Fat and Oils, is just conducive to
Health.
The data of table three also show that the hardness of roasted biscuit sample is larger in air environment, and with carrier gas
The hardness that roasted biscuit sample is carried out in vacuum environment significantly reduces, compared with biscuit sample roasted in air environment,
Less than institute roasted 85% in air environment, the crisp brittleness of biscuit sample obtains the hardness of roasted biscuit sample in vacuum environment
Improve to significant.It also illustrates, the vacuum boiling expanding treatment before vacuum bakeout can effectively improve food crisp brittleness.
Table four: the test case of the shelf-life of biscuit sample
Data in table four are shown, are toasted in air environment, cooling 5 pieces of prepared biscuit samples, in air environment
Middle vacuum packaging, the shelf-life of 5 pieces of biscuit samples, the shelf-life that is averaged was 94.0 days at 86-109 days；With nitrogen carrier gas
Vacuum environment in toast 5 pieces of prepared biscuit samples, be vacuum-packed in air environment, which guarantees the quality
Phase is 172-205 days, and the shelf-life that is averaged is 186.6 days.I.e. in the vacuum environment with nitrogen carrier gas roasted biscuit
Shelf-life is increased to the 2 times or more of former shelf-life, i.e. the shelf-life improves 1 times or more, and the shelf-life has obtained significant raising.
It is above-mentioned that mainly the technical parameter of food vacuum roasting plant institute baked food is carried out pair by taking walnut cake and biscuit as an example
Than explanation, in addition, the food vacuum roasting plant is further adapted for being baked the crisp food of stemness such as the dry, potato chips of purple sweet potato.It, will be to before baking
The food of baking carries out vacuum boiling expanding treatment, and the moisture vacuum boiling gasification in food, food improves food by boiling extruding
The crisp brittleness of product.The baking and cooling of food carry out in the vacuum environment with carrier gas, and food-baking is volatilized in carrier gas
The baking volatile matter such as trace metal ion gas of grease and roasted room vaporization at high temperature is discharged in time, and food is isolated with air, food
In grease be difficult to happen oxidation and metal Cui oxidation is raw and endanger the Oxidation of Fat and Oils of health and go bad object, the oxygen uptake of food
Ability is lowered, and the oxygen residual quantity in food is lower, the extension of advantageous effective period of food quality.
The food of the prior art is toasted in air environment, for the crisp brittleness for improving food, it is necessary to a large amount of oil be added
Rouge and swelling agent reduce the hardened rate of food, improve the crisp brittleness of food.Baking temperature is up to 190 DEG C, even higher, food
In the direct ingress of air of grease, the trace metal ion gas of roasted room vaporization at high temperature, such as Fe, Cu, Mn, Cr metal ion gas,
It is catalyzed grease and oxidation reaction occurs.Grease generates oxidation deterioration object, oxidation through high-temperature oxydation and metal catalytic hydroperoxidation reaction
Rotten object promotes grease high-temperature oxydation, accelerates the oxidation rate of grease, generates the rotten object of more Oxidation of Fat and Oils harmful to health,
Increase the ability of capture food product oxygen, so that oxidative rancidity easily occurs in preservation and goes bad for food, the shelf-life is short.It guarantees the quality to improve
Phase is short, it is necessary to increase the dosage of preservative.
Food vacuum roasting plant of the invention is configured to be suitable for the baking of the baked goods in the vacuum environment with carrier gas
Roasting device, the feeder suitable for apparatus for baking delivery of carrier gas, sensor group, valve group and suitable for make apparatus for baking maintain institute
Need the vacuum plant of vacuum environment.The gate for manipulating apparatus for baking is opened, and food to be baked is transferred to by manipulation apparatus for baking
In apparatus for baking, closing gate is manipulated, apparatus for baking is in the state being isolated with outside air；Manipulate the 2nd valve opening stream
Logical, manipulation vacuum pump startup, vacuumizes flow path circulation, and suction discharge bakes indoor air, obtains vacuum environment；Obtain vacuum meter
Measured value be in higher vacuum degree when the measured value, which is less than the predetermined vacuum in baking process, spends, moisture in food
Vacuum boiling gasification, food product forms air porous expanded, by vacuum boiling extruding, is kept for the preset period, food is abundant
Extruding；Then, it then manipulates the 2nd valve and turns aperture, manipulation the 1st valve opening circulation down, the delivery of carrier gas into roasted room makes roasted room
Air pressure increases, when the measured value of gauge feedback reaches the setting value of the baking vacuum degree in baking process, manipulation baking dress
Set starting heating；Obtain the measured value of the temperature of temperature sensor detection and the setting value of the baking temperature in baking process, behaviour
Vertical apparatus for baking adjustment heating presses Roaster so that the measured value of temperature reaches setting value in the vacuum environment with carrier gas
The temperature baked goods set in skill stop when completing baking；After the completion of food is baked, the 2nd valve of manipulation is closed, is grasped
Vertical vacuum pump stops, and makes to restore normal pressure, the cooling food in carrier gas environment in roasted room.Compared with prior art, the present invention obtains
Following beneficial technical effect.
The baked food in the vacuum environment with carrier gas, the crisp brittleness of food and crisp uniformity are significantly changed
It is kind；High vacuum pretreatment is carried out to food before roasting, the moisture ebullition, gasification in food, food product forms air porous expanded, food
By vacuum boiling extruding, expansion rate is enhanced, and the crisp brittleness of institute's baked food obtains further improving, and food hardness can be with
Reduce by 15% or more.The grease of food volatilization, trace metal ion gas of roasted room volatilization etc. are discharged in time and toasts volatile matter for carrier gas
And the air of leakage, the grease in food is difficult to happen high-temperature oxydation and metal catalytic hydroperoxidation reaction generates oxidation deterioration
Object；Not as good as conventional roasted 10%, the oxygen uptake ability of food is greatly reduced the content of the rotten object of Oxidation of Fat and Oils in food, is had
Conducive to the health of eater；Food toasted in vacuum environment and carrier gas environment in it is cooling, the oxygen residual quantity in food is extremely low.Cause
And the roasted food of institute is easier to save, the shelf-life improve 0.5-1 times and its more than.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, the present invention
Claimed range is delineated by the appended claims, the specification and equivalents thereof from the appended claims.
Claims (10)
1. a kind of food vacuum roasting plant characterized by comprising
Feeder, the carrier gas constituted suitable for supplying inert gas, the feeder include successively sealing connection by pipeline
Suitable for storing liquid carrier gas air reservoir, suitable for by liquefied carrier gas gasify generate gaseous state carrier gas gasifier, be suitable for storage gas
The temporary storage tank for changing gaseous state carrier gas produced by device and the pressure reducing valve suitable for reducing carrier gas output pressure and pressure stabilizing；
Apparatus for baking, suitable for the baked food in the vacuum environment with carrier gas, the inside of the apparatus for baking, which is set, to be suitable for
The roasted room of baked goods；The support baking tray arranged in the horizontal direction for being suitable for carrying food to be baked is set in the roasted room, fits
In the prisoner's gas head for spilling gas head, being sucked discharge suitable for carrier gas that carrier gas is shunted to guiding flow direction support baking tray；The gas head that spills is by water
Flat setting, positioned at the top of support baking tray, prisoner's gas head is horizontally set, positioned at the lower section of support baking tray；It is set in the roasted room suitable
It is baked the temperature sensor of food temperature in detection, apparatus for baking is assembled the vacuum meter for being adapted to detect for roasted room vacuum degree；
The gas head that spills includes suitable for by isocon that carrier gas shunts, multiple water conservancy diversion being parallel to each other that direction is arranged along the horizontal plane
Pipe, the input port suitable for carrier gas input is set on the isocon, be connected with the input port be suitable for the more of carrier gas shunting
A delivery outlet；The input port of the delivery outlet of the isocon and each diversion pipe seals circulation respectively, is set and is located on diversion pipe
Multiple flow-guiding mouths of its lower end surface, it is opposite with support baking tray, suitable for the carrier gas in diversion pipe is shunted guiding flow direction support baking tray；It is described
The delivery outlet of pressure reducing valve is connected to through the 1st valve with the sealing of the input port of isocon；
Vacuum plant, the vacuum environment being suitable for needed for roasted room provides, the vacuum plant includes being adapted to filter out of being sequentially communicated
The filter of mist of oil and particulate matter and the vacuum pump for being adapted to provide for vacuum environment；The output for being suitable for carrier gas discharge of prisoner's gas head
Mouth is connected to the sealing of the input port of filter；
The entrance for inputting and exporting suitable for food is set in the side of the apparatus for baking, with sealing means at the entrance
Gate is set, is suitable for roasted room and air insulated, food to be baked is baked in the vacuum environment with carrier gas.
2. food vacuum roasting plant according to claim 1, it is characterised in that: prisoner's gas head is the shell being made of wall
Body structure capturees and multiple prisoner's stomatas annular in shape flowed into suitable for carrier gas, internal setting is set on the top end face of gas head along level
Setting is adapted to the exhaust outlet of exhaust pipe, the exhaust outlet warp of prisoner's gas head in the horizontally disposed diversion cavity in face direction, bottom face
Exhaust pipe is connected with the input port of filter, is suitable for vacuum pump pumping exhaust and maintains vacuum environment.
3. food vacuum roasting plant according to claim 2, it is characterised in that: the apparatus for baking further includes flowing grid
Lattice are arranged on and spill close to the first side of gas is spilt between gas head and support baking tray, suitable for spilling gas head and holding in the palm the carrier gas stream between baking tray
Be uniformly distributed.
4. food vacuum roasting plant according to claim 3, it is characterised in that: the stream grid is at least by along longitudinal direction
Longitudinal homogenizing plate of the lateral homogenizing plate of equidistantly distributed, transversely equidistantly distributed is constituted；The transverse direction homogenizing plate, Zong Xiangjun
Flowing plate is arranged in a vertical direction, and lateral homogenizing plate, longitudinal homogenizing plate are intertwined to form lattice-shaped.
5. food vacuum roasting plant according to claim 4, it is characterised in that: the surrounding avris for flowing grid point
Spoiler in long strip is not set, is arranged in a vertical direction, the lower end of spoiler is inclined outwardly relative to upper end；Flow grid
The spoiler head and the tail of lattice surrounding, which are sequentially connected, surrounds the apron shape structure that lower ending opening is greater than upper end opening.
6. food vacuum roasting plant according to claim 5, it is characterised in that: the apparatus for baking further includes obstructing lattice
Grid are arranged between support baking tray and prisoner's gas head close to support baking tray side, suitable for holding in the palm baking tray and captureing the carrier gas stream between gas head
Be uniformly distributed.
7. food vacuum roasting plant according to claim 6, it is characterised in that: described to obstruct grid at least by along longitudinal direction
The transverse arrest of equidistantly distributed disturbs plate, the vertical of transversely equidistantly distributed obstructs plate composition；The transverse arrest disturbs plate, the vertical plate that obstructs along perpendicular
Histogram to arrangement, disturb plate, vertical obstruct plate and be intertwined to form trellis by the transverse arrest.
8. food vacuum roasting plant according to claim 7, it is characterised in that: the surrounding avris for obstructing grid point
Current limiting plate in long strip is not set, is arranged in a vertical direction, the upper end of current limiting plate is inclined outwardly relative to lower end；Obstruct lattice
The current limiting plate head and the tail of grid surrounding, which are sequentially connected, surrounds upper end opening greater than lower ending opening in the apron shape structure stood upside down.
9. food vacuum roasting plant according to claim 8, it is characterised in that: the quantity of the flow-guiding mouth for spilling gas head
It is corresponding with the quantity of food on support baking tray is placed in, the quantity of prisoner's stomata of prisoner's gas head and the number for being placed in food on support baking tray
It measures corresponding.
10. food vacuum roasting plant described in -9 according to claim 1, it is characterised in that: the carrier gas be nitrogen, argon gas,
At least one of helium.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811059271.9A CN109380457A (en) | 2018-09-10 | 2018-09-10 | A kind of food vacuum roasting plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811059271.9A CN109380457A (en) | 2018-09-10 | 2018-09-10 | A kind of food vacuum roasting plant |
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| CN109380457A true CN109380457A (en) | 2019-02-26 |
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ID=65418918
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110250229A (en) * | 2019-06-19 | 2019-09-20 | 刘殿坤 | A kind of energy-saving food process equipment |
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2018
- 2018-09-10 CN CN201811059271.9A patent/CN109380457A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110250229A (en) * | 2019-06-19 | 2019-09-20 | 刘殿坤 | A kind of energy-saving food process equipment |
| CN110250229B (en) * | 2019-06-19 | 2021-08-10 | 肇庆市月美食品有限公司 | Energy-saving food processing equipment |
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Application publication date: 20190226 |