CN100522026C - An oven for cooking food - Google Patents
An oven for cooking food Download PDFInfo
- Publication number
- CN100522026C CN100522026C CNB2007100015346A CN200710001534A CN100522026C CN 100522026 C CN100522026 C CN 100522026C CN B2007100015346 A CNB2007100015346 A CN B2007100015346A CN 200710001534 A CN200710001534 A CN 200710001534A CN 100522026 C CN100522026 C CN 100522026C
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- Prior art keywords
- baking box
- housing
- main coil
- fan
- cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
- F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
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- A—HUMAN NECESSITIES
- A21—BAKING; EDIBLE DOUGHS
- A21B—BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING
- A21B3/00—Parts or accessories of ovens
- A21B3/04—Air-treatment devices for ovens, e.g. regulating humidity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C14/00—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning
- F24C14/005—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning using a cleaning liquid
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Baking, Grill, Roasting (AREA)
Abstract
An oven for cooking food, the oven comprising: an enclosure (2) for receiving the food to be heated and for containing a cooking atmosphere, the enclosure (2) comprising two horizontal walls forming respectively a bottom wall (9) and a top wall (10), interconnected by at least two vertical side walls (7, 8); the enclosure (2) being closed by at least one door (5) that is likewise vertical, and communicating with the outside via an exhaust opening (28) for exhausting gas inside the enclosure (2) and at a pressure above atmospheric pressure; and a heater device (11) for heating the cooking atmosphere.
Description
The application be that December 23, application number in 2003 are 200380107187.5 the applying date, denomination of invention divides an application for the patent of invention international application of " a kind of baking box that is used for cooking food ".
Technical field
The present invention relates to be used for the baking box of cooking food.
The invention particularly relates to a kind of baking box, it comprises: the housing that is used to hold food to be heated and holds curing environment, described housing comprises two horizontal wall, they form diapire and roof respectively, two horizontal wall interconnect by two vertical sidewalls at least, and described housing is closed by at least one vertical door; With the heater that is used for the heated baking environment.
An object of the present invention is to improve this baking box.
According to one embodiment of the invention, the baking box that is used for cooking food comprises: a housing that is used to hold food to be heated and holds curing environment, described housing comprises two horizontal wall, they form diapire and roof respectively, two horizontal wall interconnect by two vertical sidewalls at least, described housing is closed by at least one vertical door, and by exhaust outlet and exterior, described exhaust outlet is used for that enclosure interior pressure is higher than atmospheric gas and discharges; With-be used for the heater of heated baking environment; Described baking box is characterised in that: it comprises: regulate the chamber, it is filled with the liquid of a constant volume at least in part, and this liquid capacity can change between high value and low value, regulates the chamber and communicates with housing by air intake; With-entering pipe, it extends between high-end and low side, and is high-end towards the outside opening of regulating chamber and housing, and when liquid level was corresponding with its high value basically, low side was sealed by liquid.
Background technology
Known existing baking box, for example, when producing that steam or door are closed or heater when being gas range (producing burning gases or the extra high pressure that ignites), the pressure in the toaster case can rise, and the rising of this pressure is changeable and can keep long or short period.Consider from various security reasons, need this pressure of control to rise, make its decline, even eliminate this pressure and rise.In existing baking box, this normally solves by opening Song who is provided with mechanical detachable cap.
Such detachable cap needs periodic maintenance because particularly when it is blocked, exist no longer can normal running danger.Thereby it is no longer valid and realize its safety effect reliably.
The embodiments of the invention that limit above can overcome this deficiency.
Really, the pressure that it can be controlled in the housing in the following manner rises, and these modes are: non-mechanical means, thus can overcome the maintenance relevant restriction essential with existing baking box; Adjustable way because this mode can stop gas to flow out from housing, or enters by changing liquid level with making the either large or small degree of described gas; With-reliable fashion, because do not exist liquid to be sealed undesirably or by this danger of mechanical blockage, even occur under immersing situation under the high water level in the bottom that enters pipe, pressure significantly rises, gas also can force back water then, and " bubbling " also discharges by entering pipe.
Can be at random dispose with following one or more and realize that they are: described baking box comprises the partially filled at least discharge side that certain quantity of fluid is arranged, and liquid capacity can change between high value and low value, described discharge side with regulate the chamber and communicate; Described baking box be included in exhaust outlet and high-end between the discharge pipe that extends, high-end on high and low liquid level towards the discharge side opening; Described baking box is included in the smoke exhaust pipe that extends between first end and second end, the exterior of described first end and discharge side, and described second end is positioned on the high liquid level, and described second end allows barotropic gas to discharge from housing by discharge pipe; Described baking box comprises an adjuster, and adjuster self comprises regulates chamber and discharge side, and this two chamber has constituted local at least separated space, and this two chamber interconnects by a slype, flows between two chambeies to allow liquid; Described baking box comprises first temperature sensor in discharge side, in regulating the chamber, comprise second temperature sensor, first temperature sensor is used for measuring from exhaust outlet effluent air temperature, and second temperature sensor is used to measure the gas temperature that enters housing by air intake;-described baking box comprises first temperature sensor and second temperature sensor in discharge side, first temperature sensor is used for measuring from exhaust outlet effluent air temperature, and second temperature sensor is positioned in discharge side under the low liquid level; Described baking box comprises calculation element, is used for calculating the relative humidity of baking box, and this relative humidity is the function of the first and second temperature sensor measured temperatures; Described baking box comprises a fan, and described fan is arranged on enclosure interior to stir the baking air that is heated by heater, and described fan forms an intake region in enclosure interior, and air intake is located substantially in the fan aspirated zone; Described baking box comprises the steam generation device that water vapour can be sent in the housing; Be used for the exhaust outlet that the barotropic gas of enclosure interior is discharged is positioned under the heater; Exhaust outlet is basically at the minimum point place of diapire opening; Communicate with a bend pipe with-exhaust outlet, described bend pipe can be discharged liquid and condensate from housing, and prevents that cold air from entering housing.
According to another embodiment of the present invention, a kind of baking box that is used for cooking food comprises: housing, be used to hold food to be heated and hold curing environment, described housing comprises two horizontal wall that form diapire and roof respectively, they interconnect by at least two vertical sidewalls, described housing is closed by a vertical door at least, and described housing is by exhaust outlet and exterior, and described exhaust outlet is the barotropic gas that is used for discharging housing.
Described baking box also comprises first temperature sensor, to measure the temperature from the exhaust outlet effluent air.
Known existing baking box may comprise the device that is used to produce steam, is used for delivering vapor in housing.The shortcoming of existing baking box is: can not control the humidity in the housing reliably.Particularly, existing baking box does not have the humidity that consideration is produced by food self usually.
The embodiment of the invention that limits above can overcome described deficiency.
Really, because these configurations, temperature of surveying by first temperature sensor and the curve map of noting in advance can calculate the humidity ratio in the housing.The humidity ratio that calculates according to this mode is regulated baking then.
Can adopt following one or more to dispose arbitrarily and realize that they are :-described baking box comprises the device that calculates the humidity ratio in the baking box, and humidity ratio is the function of the first temperature sensor measured temperature; Described baking box comprises second temperature sensor of witness mark temperature; Humidity ratio in the baking box calculates by calculation element, and humidity ratio is the function of the first and second temperature sensor measured temperatures; Described baking box comprises the heater that is used for the heated baking environment; Described baking box comprises the fan that is positioned at enclosure interior, to stir curing environment by the heater heating, described fan in housing, form an area of low pressure and-described baking box is included in the air intake of housing upper shed, it roughly is positioned at the described area of low pressure of fan; Because this set, air is entered in the housing with the environment in the dry housing, especially drying environment wherein when bake process finishes; For example, roasting food can be got more crisp; Because this set if be essential in bake cycle, also can make air enter in the housing more promptly to cool off curing environment; When cold air flowed into air intake, this set just can stir by the cold air that fan will enter rapidly in the housing; Cold air is arranged from the top of housing or the bottom enters and cool off the top respectively or bottom tray is an advantage of baking box; Because this embodiment of the present invention can make the more uniform temperature in the housing;-described baking box comprises that one regulates the chamber, and it is filled with liquid in the part at least, can regulate liquid capacity and change between high value and low value, and this adjusting chamber communicates with air intake; Described baking box is included in the pipe that enters that extends between high-end and the low side, and is high-end towards the outside opening of regulating chamber and housing, and when liquid level was roughly corresponding with its high value, low side was covered by liquid;-described baking box comprises a discharge side, and it is partially filled at least liquid, and liquid capacity can change between high value and low value, this discharge side with regulate the chamber and communicate; Described baking box comprises that one regulates box, regulates box self and comprises and regulate chamber and discharge side, and this two chamber constitutes local at least being separated from each other and space that the passage by finite size is interconnected, and described channels designs becomes can allow liquid to circulate between this two chamber; Described baking box be included in exhaust outlet and high-end between the discharge pipe that extends, described high-end on the two position towards the discharge side opening: described baking box is included in the smoke exhaust pipe that extends between first end and second end, described first end and discharge side exterior, described second end is positioned on the high liquid level, and described second end allows the overvoltage gas in the housing to discharge by discharge pipe; Second temperature sensor is positioned in regulating box under the low liquid level; First temperature sensor is positioned in discharge side on the high liquid level; Described baking box comprises the device that is used to produce steam, and it is configured to supply the steam in the housing.
According to another embodiment of the present invention, a kind of baking box that is used for cooking food comprises: hold food to be heated and hold the housing of curing environment, described housing comprises two horizontal wall that form diapire and roof respectively, they are connected by at least two vertical sidewalls, described housing is closed by at least one vertical door and by exhaust outlet and exterior, this exhaust outlet be used for discharging housing barotropic gas and-be used for the heater of heated baking environment.
In addition, in this baking box, the exhaust outlet that is used for the barotropic gas of housing is positioned under the heater.
Known existing baking box may comprise the exhaust outlet of discharging in order to barotropic gas in the control housing.When heater was gas range, these gases were for example by being constituted by cooking food and/or steam generation device and/or combusted gas generant moisture in the housing.
The embodiment of the invention that limits above can be improved the uniformity of heat distribution in this baking box.
Really, by this configuration, can limit, even the flue effect of the smoke exhaust pipe that communicates with exhaust outlet of releasing, and do not using valve, ventilating opening or any mechanical device that other can get clogged, or even do not use under the situation of bend pipe yet, allow in the housing or even the gas of little malleation is freely discharged from housing.The temperature difference between the top and bottom of baking box reduces, and the heat distribution in the housing is more even.
Can at random adopt following one or more to dispose and realize that they are: exhaust outlet is roughly at the minimum point place of diapire opening; Exhaust outlet communicates with bend pipe, and bend pipe is configured to discharge liquid and condensate and avoid cold air to pour in the housing from housing;-described baking box comprises the device that is used to produce steam, and it is designed to provide steam in housing;-described baking box comprises a fan, it is positioned at enclosure interior in order to stir the baking gas by the heater heating, described fan forms an area of low pressure in housing :-described baking box is included in an air intake on the housing, it roughly is arranged in the area of low pressure of described fan: described baking box comprises that is regulated a chamber, it is filled with liquid in the part at least, can regulate liquid capacity and change between high value and low value, this adjusting chamber communicates with air intake; Described baking box is included in of extending between high-end and the low side and enters pipe, is high-endly regulating chamber and hull outside opening, and when liquid level was roughly corresponding with its high value, low side was covered by liquid; Described baking box comprises a discharge side, and it is filled with liquid in the part at least, can regulate liquid capacity and change between high value and low value, and this discharge side communicates with the adjusting chamber;-described baking box comprises described adjusting chamber and discharge side, and this two chamber has constituted the space that the local at least slype that is separated from each other and flows between this two chamber by permission liquid is interconnected; Described baking box be included in exhaust outlet and high-end between the discharge pipe that extends, this discharge pipe on high liquid level towards the discharge side opening; Described baking box is included in the smoke exhaust pipe that extends between first end and second end, first end and discharge side exterior, and second end is positioned on the high liquid level, and described second end allows the barotropic gas in the housing to discharge by discharge pipe; Described baking box comprises first temperature sensor and second temperature sensor, and first temperature sensor measurement is from the temperature of the gas of exhaust outlet discharge, and second temperature sensor is positioned in discharge side under the low liquid level;-described baking box comprises first temperature sensor and second temperature sensor, and first temperature sensor measurement is from the temperature of the gas of exhaust outlet discharge, and second temperature sensor measurement enters the gas temperature of housing by air intake; Described baking box comprises the calculation element that calculates the humidity ratio in the baking box, and humidity ratio is the function of the first and second temperature sensor measured temperatures.
According to another embodiment of the present invention, a kind of baking box that is used for cooking food comprises that the curing environment that is used in humidity holds and the housing of heat food.
Described baking box also comprises: the water column pipe, the water that contains predetermined volume, its volume keeps constant between peak level and low side outlet, and water flows in the water column pipe by the low side outlet, with-scatterer, it is designed to receive the water that flows out from the low side outlet and evaporates a part these water at least.
Oneself knows that existing baking box may comprise the device that is used to produce steam, and water pours on the heating element heater in this device.Usually wish to produce quantitative steam.The quantity of steam that is produced is determined by the flow velocity of the water that arrives heating element heater basically.But, be used to realize that the flow regulator of this effect is always unstable, thereby need to regulate.
The embodiment that limits above can overcome above-mentioned deficiency.
Really, because these configurations, by the water height decision between the outlet of peak level and low side in the water column pipe, peak level is corresponding to for example overfall basically for the water flow velocity in the low side exit of water column pipe.This water height just can easily keep constant without any need for special adjusting.In addition, the pressure in housing, for example because quantity of steam causes that greater than its condensation number water velocity descends automatically when rising, and without any need for the electrical feedback control device.This embodiment of the present invention provides a kind of method simple and reliable, that be used to produce quantitative steam.
Can at random adopt following one or more to dispose and realize that they are: peak level exports corresponding to overflow;-water column pipe is positioned at hull outside, and scatterer is arranged in housing;-for example particularly under the situation that water is evaporated by resistance heater, scatterer is an electronic heating apparatus; Scatterer is heated by the heat that gas range produced; Scatterer is around the rotating shaft rotation of fan, and fan is designed to stir the steam that is produced by scatterer in enclosure interior, and described fan forms an area of low pressure in housing;-described scatterer is the disk that rotates around rotating shaft;-described baking box is included in an air intake on the housing, and it roughly is positioned at the area of low pressure of fan; Described baking box comprises that is regulated a chamber, and it communicates with the air intake of housing, regulates the local at least water that flows out from the overfall of water column pipe that is filled with in chamber, and the water capacity that can regulate in the chamber changes between high value and low value; Described baking box is included in the pipe that enters that extends between high-end and the low side, is high-endly regulating chamber and hull outside opening, when water level roughly with its high value at once, low side is awash; Described baking box comprises a discharge side, its local at least water of discharging that is filled with from the overfall of water column pipe, and the water capacity that can regulate in the discharge side changes between high value and low value, and described discharge side communicates with the adjusting chamber; Described baking box be included in housing and high-end between the discharge pipe that extends, discharge pipe communicates with housing, high-end on high water level towards the discharge side opening;-described baking box is included in the smoke exhaust pipe that extends between first end and second end, first end and discharge side exterior, and second end enters on high water level, and described second end allows the overvoltage gas in the housing to discharge by discharge pipe; Described baking box comprises that is regulated a box, regulates box self and comprises described adjusting chamber and discharge side, and this two chamber has constituted the local at least space that is separated from each other and is interconnected by slype, and slype is designed to allow liquid to circulate between this two chamber; Described baking box comprises a cooling circuit between the peak level of water column pipe and low side outlet, it extends to the height place of at least a portion at top, so that the described at least a portion at local at least cooling top, and make at least a portion steam in the humid air of shell on food, form condensate; And-difference in height between the outlet of peak level and low side is corresponding to the hydraulic pressure in low side exit, and described hydraulic pressure is between 5 to 30mbar.
According to another embodiment of the present invention, a kind of baking box that is used for cooking food comprises: be used for curing environment in humidity and hold housing with heat food, described housing comprises the roof that is arranged on the food to be heated, be arranged on the heater of enclosure interior, and fan, it is arranged on enclosure interior equally, and described fan comprises at least one rotating vane, and rotating vane rotates to stir the baking air by the heater heating around rotating shaft on circular orbit.
Described baking box also comprises: be arranged in the scattering disk of housing around rotating shaft and the rotation of fan one, and water-feed, it imports water near the scattering disk so that water drops on the scattering disk from hull outside, because the heat that heater produced, water is partly evaporated at least.
Known existing baking box disposes the evaporimeter as steam generator, and this evaporimeter is usually located at hull outside.Steam enters in the housing by a hole.Fan scatters steam in housing.
Existing this baking box is quite expensive.
The embodiment that limits above can overcome above-mentioned deficiency.
Really, this configuration is simple and does not require additional evaporimeter.
Can at random adopt following one or more to dispose realizes.They are :-scattering disk is arranged in the central space of circular orbit; Heater and scattering disk positioned opposite also add the thermal scattering disk, so that fall evaporating to small part water on the scattering disk; Heater is a gas range; Water-feed comprises the water column pipe that contains predetermined water gaging, and the capacity of water keeps constant between peak level and low side outlet, and water flows on the scattering disk by the low side outlet; Rotate with a certain rotary speed with-scattering disk, regulate this speed so that water to the small part that drops on the scattering disk is injected into the top.
According to another embodiment of the present invention, a kind of baking box that is used for cooking food comprises: the housing that is used to hold food to be heated, described housing comprises two horizontal wall, forming diapire and roof respectively also interconnects by two vertical sidewalls at least, described housing is closed by at least one vertical door, with-being arranged on the fan of enclosure interior, described fan comprises at least one rotating vane, rotating vane rotates around rotating shaft on circular orbit.
This baking box also comprises: cleaning agent feed system near it can import fan from hull outside with cleaning agent, makes some cleaning agents fall on the fan and be ejected into by fan on each wall of housing.
Existing baking box may comprise cleaning agent feed system, and this system is installed in housing vertical wall or the horizontal wall one.Common this feed system layout is on roof.But existing this method can not be ejected into cleaning agent on all wall surfaces of housing.
The embodiment that limits above can overcome this deficiency.
Really, because this configuration of the present invention, fan atomizes cleaning agent, and the cleaning agent that is atomized guides by air-flow everywhere in housing, thereby cleaning agent can be ejected on all wall surfaces of housing.
Can at random adopt following one or more to dispose realizes, they are :-described baking box comprises the scatterer that rotates around rotating shaft with fan, cleaning agent is imported the cleaning agent feed system of scatterer, and this feed system imports cleaning agent when scatterer makes its rotation in such a manner can spray cleaning agent along the direction of each wall of housing; Scatterer is a disk, and the axle of its circular symmetric overlaps with the rotating shaft of fan; Cleaning agent feed system imports cleaning agent in the scatterer, scatterer is made of the cylinder with cylindrical wall, its symmetrical cylinder axis overlaps with the rotating shaft of fan, described wall is installed with many apertures, described hole is designed to allow cleaning agent radially to flow to cylindrical outer, flows to each wall of housing; Cleaning agent feed system comprises the container that is designed to hold cleaning agent, and the liquid diluting that some cleaning agents can be supplied above container is used for the liquid of dilute cleaning agent in the downstream flow of container in cleaning agent feed system.
According to another embodiment of the present invention, a kind of baking box that is used for cooking food comprises :-be used for holding the also housing of cooking food at the curing environment of humidity, described housing comprises roof that is arranged on food to be heated top and the means that produce steam in enclosure interior.
Described baking box further comprises the means of cooling off roof.
Known existing baking box may comprise the vapourizing furnace that is used to produce steam, and described vapourizing furnace is placed on hull outside usually.Steam enters in the housing by the hole.Described baking box sucks steam in the housing.But, find through regular meeting: even under the situation of cooking food such as flavoring or cheese, when baking finishes unfavorable dried surface or epidermis can appear.
The embodiment that limits above can overcome above-mentioned deficiency.
Really, because this configuration, by steam condensation on roof that steam generation device produced, small drops of water can drop on the dessert or cream that is positioned under the roof.
This configuration is enough to moistening foodstuff surface to overcome above-mentioned deficiency.
Can at random adopt following one or more to dispose and realize that they are: by the cooling device that pipe-loop constitutes, liquid circulates in this pipe-loop, described pipe-loop and roof thermo-contact;-liquid is water, and liquid flows in the scatterer by the low side outlet in the downstream of pipe-loop, and described scatterer produces steam in housing; Be positioned at the upstream of pipe-loop and contain the water column pipe of predetermined volume water, water capacity keeps constant between low side outlet and peak level; Be positioned at the water column pipe in pipe-loop downstream, it holds the water of predetermined volume, and water capacity keeps constant between low side outlet and peak level.
According to another embodiment of the present invention, a kind of baking box that is used for cooking food comprises: be used for holding the also housing of heat food at curing environment, described housing comprises two horizontal wall, they form diapire and roof respectively and are connected by at least two vertical walls, and described housing is closed by at least one;-fan, it is arranged in enclosure interior, and on a wall of housing, described fan comprises the blade that at least one rotates around rotating shaft on circular orbit, to stir the baking air; With-air intake, basically towards the fan rear openings, fan is installed on this wall on the wall of housing for it.
In addition, in this baking box, each blade is connected on the rotating shaft with suitable method, so that the gas that enters from air intake just directly pierced into the circular orbit inside of each blade before entering the housing remaining space.
European patent document EP-A-733 862 disclosed existing baking boxs have for example known that it can comprise housing, be arranged in the fan of enclosure interior and basically at the air intake of fan rear openings.But in these existing baking boxs, the Temperature Distribution in the housing is not optimum.
The embodiment that limits above can overcome above-mentioned deficiency.Really, because this configuration, the air of hull outside enters the housing directly to be stirred rapidly by fan from the fan rear side.Thereby can make the Temperature Distribution in the housing more even.
Can at random adopt one or more establishings that limit below to put Song Shixian, they are: be connected to blade on the rotating shaft by disk, described disk comprises that at least one is positioned at the hole on the circular orbit, the radius of described circular orbit is substantially equal to rotating shaft and the separately spacing of air intake on housing wall, and fan is installed on the described wall;-the opening that corresponds respectively to air intake and each hole be basically annular and have an equal diameter; The diameter in described hole is substantially equal to 30mm; Described blade is made of the flat thin slice of rectangle, it is being substantially perpendicular to disk and is extending through on the plane of rotating shaft, each thin slice is connected on the disk by first edge, be connected on the annulus being centered close on the rotating shaft and extending being parallel on the plane of disk of annulus by second edge relative with first edge; Comprise six holes that distribute around angular separation such as rotating shafts with-disk.
According to another embodiment of the present invention, a kind of baking box that is used for cooking food comprises: the housing that is used to hold food to be heated, described housing has two horizontal wall, one of them horizontal wall forms diapire, another horizontal wall forms roof, and they connect by at least two vertical sidewalls, and described housing is closed by at least one vertical door, and comprise the window that can see enclosure interior and-produce a kind of device that shows the audible signal that heating process finishes.
This baking box further comprises lighting device, and it is designed to can produce the light that expression heating process finishes in enclosure interior when described heating process is finished.
For example, the existing baking box as public organizations' provand baking box is known.In public provand kitchen, several baking boxs occur through regular meeting and work simultaneously.This existing baking box is designed to show finishing of the baking that presets by sound usually.Described sound is a kind of audible signal, can send described audible signal when heating process finishes, when finishing at the fixed time or when reaching predetermined temperature or humidity ratio etc.But, when several existing this baking boxs are worked simultaneously, may be difficult to judge sound sends from which baking box in the kitchen.
The embodiment that limits above can overcome above-mentioned deficiency.Really, because these configurations, audible signal can remind user's heating process to be through with.Therefore, the user needn't observe whole bake process.The user also can carry out other work.Yet, when the user wishes that the bake process that is alerted finishes, audible signal causes user's attention, and the highlighting lamp of the baking box that the expression bake process has just finished has then been given user's visual signal, can see that this light easily observes baking box to help the user by the window on the oven door.
Can at random adopt following one or more to dispose and realize that they are :-described characteristic light is a colored light;-intensity of light changes back and forth when described heating process finishes;-described lighting device is installed on the door; Described door has an insulating space local at least and housing edge heat, and lighting device is installed in the described insulating space; Described insulating space comprises the panel of two packaged glass, i.e. wainscot and outer panels, and outer panels has towards the transparent region of wainscot transparent region, and forming described window, this two panels is arranged in lighting device within it surround is installed; The variation back and forth of light intensity has constituted flash of light; Described baking box comprises slideway, is used for arranging in height overlapping pallet at baking box, and lighting device emits beam along short transverse; Form smooth wall with-wainscot towards housing.
According to another embodiment of the present invention, a kind of baking box that is used for cooking food comprises: be used to hold and heat food, the housing that comprises curing environment, described baking box comprises: the fan that stirs the baking air,-be used for clockwise and the motor of driven fan counterclockwise, described motor has a main coil and makes first switching device shifter of motor reverse rotation.
People recognize this baking box from US4671 250 and EPA1107650 especially.
Especially, document EP A1107650 discloses an example of this baking box, and in this baking box, motor uses dc source, and first switching device shifter can make the current reversal that flows into motor.By making the current reversal that flows to motor, the direction of rotation of turbine also is reversed.
In order to scatter heat in the best way at the baking box that is used for cooking food, often a kind of known method that uses is the direction of rotation oppositely (approximately per minute or per 4 minutes once) that makes fan.When direction was reverse, heating process must be interrupted to prevent that heat from gathering at the case top place.Make direction of rotation oppositely will delay bake process, the direction of rotation that changes fan as quickly as possible makes us expecting.
But, in such baking box, oppositely being subjected to fan inertia and being installed in the obstruction of the low moment of the motor in these baking boxs of direction of rotation.Owing to there is not brakes, will make whole unit, promptly comprise motor and fan, cost stops for a long time and starts once more in the opposite direction.Although be equipped with the motor of electromagnetic brake supply is arranged in market, they are expensive and wearing and tearing brake block require the high level maintenance.
Summary of the invention
There is a kind of baking box can overcome above-mentioned deficiency, it not only has above-mentioned various feature, also have following characteristics :-main coil is by the power supply of the AC power that predetermined period is arranged, with-during it also is included at least a portion at least one half period in two half periods of each ac period of deboost phase, in the deboost phase, second switching device shifter that main coil and AC power are disconnected.
Because these measures, what main coil was used is rectified current, and it will reduce rotating speed of motor.And motor can stop before it reverses quickly.
Can at random adopt following one or more to dispose and realize that they are: can be in the deboost phase, at the positive half period of alternating current or second switching device shifter of negative half-cycle internal cutting off main coil AC power; Can be in the deboost phase, during the negative half-cycle of alternating current and the part positive half period or during the positive half period of alternating current and part negative half-cycle, cut off second change-over switch of main coil AC power; This sample loading mode, the required power of motor braking can reduce; Can be in the driving stage, at the positive half period of alternating current with during the small part negative half-cycle or connect second switching device shifter of main coil AC power at the negative half-cycle of alternating current with during the small part negative half-cycle; Thereby the speed of motor can reduce during oppositely restarting; Motor has inferior coil, and before the deboost phase, first switching device shifter can make the sense of current in main coil and time coil reverse; Thereby can obtain higher retardation efficiency, thereby shorten braking time; During-quiescent time after being right after the deboost phase, second switching device shifter that can cut off the main coil AC power; Described measure can prevent motor after interrupting with the deboost phase before startup once more on the identical direction of rotation.
According on the other hand, the present invention relates to a kind of technology of controlling roasting food in the baking box, wherein: the baking air in the baking box is stirred by fan, fan is by the motor-driven that main coil is arranged,-under the help of first switching device shifter, the direction of rotation that makes motor is oppositely with J hectare of hour hands and counterclockwise driven fan, main coil is by the AC-powered that has between predetermined period, with main coil in the deboost phase, disconnect with AC power in the portion of time at least one half period in two half periods in each cycle of alternating current.
Can at random adopt following one or more to dispose and realize that they are: in the deboost phase, during the positive half period or negative half-cycle of alternating current, main coil and AC power disconnect; In the deboost phase, during the negative half-cycle of alternating current and the part positive half period or during the positive half period and part negative half-cycle at alternating current, main coil and AC power disconnect;-in the driving stage, at the positive half period of alternating current with during the small part negative half-cycle or at the negative half-cycle of alternating current with during the small part positive half period, main coil is connected on the AC power; Motor has inferior coil, and before the deboost phase, the sense of current in main coil and time coil is reverse; During the quiescent phase after being right after the deboost phase, main coil and AC power disconnect.
On the basis of having read the description of each embodiment, others of the present invention, purpose and advantage are clearly.
Description of drawings
Also can understand the present invention with reference to the accompanying drawings, accompanying drawing is as follows more thoroughly:
Fig. 1 is the perspective schematic view of baking box first embodiment of the present invention;
Fig. 2 is the schematic diagram of the baking box among Fig. 1, has shown toaster case especially perpendicular to the housing rear wall, basically the sectional view on the vertical plane that intersects with rear wall and heater at the place, centre position;
Fig. 3 is the perspective view of the fan of baking box shown in Fig. 1 and 2;
Fig. 4 is the sectional view of fan shown in Fig. 3;
Fig. 5 is the cooling line perspective view, and cooling line is used to cool off the baking box roof shown in Fig. 1 and 2;
Fig. 6 is the schematic diagram that is similar to Fig. 2, a kind of variant form of baking box adjuster shown in the presentation graphs 2;
Fig. 7 is the schematic diagram that is similar to Fig. 5, represents to be used to cool off a kind of variant form of the cooling circuit of baking box roof shown in Fig. 2 and 5 with the perspective view form:
Fig. 8 is the schematic diagram that is similar to Fig. 2, represents second embodiment of baking box of the present invention;
Fig. 9 is the schematic diagram that is similar to Fig. 2 and 8, represents the 3rd embodiment of baking box of the present invention;
Figure 10 is similar to Fig. 2,8 and 9 schematic diagram, represents the 4th embodiment of baking box of the present invention:
Figure 11 is the schematic diagram that is similar to Fig. 2, is the part of variant form of the baking box of aforementioned each figure, has shown the container that is used to hold cleaning agent;
Figure 12 is the schematic diagram that shows the detergent container Figure 11 from the front side;
Figure 13 is the perspective schematic view according to a kind of variant form of baking box of the present invention;
Figure 14 is the show in schematic partial sections of the oven door shown in Figure 13;
Figure 15 represents the alternative embodiment of baking box shown in Figure 13 and 14 with the view form that is similar to Figure 14;
Figure 16 schematically shows perpendicular to the diapire and the cross section of the vertical plane that intersects of part and diapire therebetween basically, and this is a baking box embodiment according to the invention;
Figure 17 schematically shows an embodiment of the power circuit of motor, the baking box fan shown in described motor-driven Figure 16;
Figure 18 schematically shows the current cycle of the primary circuit that flows to motor, the baking box fan shown in described motor-driven Figure 16;
Figure 19 represents the work period of first and second switching device shifters, and described switching device shifter is suitable for controlling the power delivery of motor, the baking box fan shown in described motor-driven Figure 16.
In each accompanying drawing, same or similar element is represented with identical Reference numeral.
The specific embodiment
Four embodiment of baking box of the present invention are described with reference to Fig. 1 to 10 below.
In first embodiment shown in Figure 1, baking box 1 of the present invention comprises the housing 2 (or muffle burner hearth) that is contained in the shell 3.Shell 3 has the device 4 of the temperature that is used for adjustment housings 2, and have permission with food to be heated and/or to be baked fill in the housing 2 the door 5.
As shown in Figure 2, housing 2 also comprises heater 11, fan 12, protective grille 13 and slideway 14.
Burning gases are the mixture of air and coal gas preferably.Described mixture mixes by agitator 18.By bellows 19 air is infeeded.Thereby air/gas mixture arrives in the gas range under a little higher than atmospheric pressure.The conveying of electronic installation (not shown) control burning gases.If gas range 11 quits work, for example, when arriving reference temperature, bellows 19 keep little malleation to enter in the mixture 18 to prevent any steam.
As shown in Figure 3, at the place, periphery of disk 20, fan 12 has a plurality of blades of arranging around rotating shaft 21 equal angles 22.As example, these blades 22 are made of rectangular flat, and each rectangular flat extends being substantially perpendicular to disk 20 and comprising on the plane of rotating shaft 21.This symmetry around rotating shaft 21 make blade can be in the same manner clockwise or be rotated counterclockwise.
On the one hand, each blade 22 is connected on the disk 20 by first edge 70, on the other hand, is connected on wheel week 71 by second edge 72.Wheel week 71 is annular, and its external diameter is substantially equal to the diameter of disk 20, and it is centered close on the rotating shaft 21.Wheel week 71 extends on the plane that is parallel to disk 20.
As shown in Figure 4, disk 20 has bore hole 73.These holes 73 roughly form the circular hole of arranging around rotating shaft 21 equal angles.According to first embodiment of fan 12, the diameter of fan 12 is 350mm; It comprises that 12 blades and 6 diameters are roughly the hole of 30mm, and these holes are arranged on the annulus that diameter is 220mm.Described diameter is roughly corresponding to the center of rotating shaft 21 on the rear wall 7 and the distance between the gas access 44.Blade 22 for example, is of a size of 30mm on mouth 72 directions when being parallel to edge 7, be of a size of 80mm on perpendicular to edge 70 and 72 directions.Hole 73 roughly is positioned on the bisector of the angular area that two continuous blades 22 are limited.For example, the gas access diameter is 40mm, and the diameter in hole 73 is roughly 30mm.
According to another example, fan 12 is with the different of above-mentioned example: the diameter of disk 20 is 270mm.
When they rotated, blade 22 was along being the circular path rotation at center with rotating shaft 21 and limiting central space 23.
Protective grille 13 extends on a vertical plane towards disk 20, here sees over from baking space 25, and protective grille 13 is in the front of gas range 11 and fan 12, and baking space 25 is used to hold food to be heated and between described gas range 11 and 5.Protective grille 13 is selectable.
10 pairs of slideways 14 essentially horizontally extend on sidewall 8.Each sidewall 8 has in a pair of slideway 14.These slideways 14 are used to support pallet 26, and the food of heating and/or baking is placed on this pallet 26.Preferably, the bottom of pallet 26 has perforation 27.
The condensate of housing 2 inside flows towards exhaust outlet 28 along the inclined-plane, and flows to the outside of housing 2 from here.For this purpose, exhaust outlet 28 communicates with bend pipe 29.When bend pipe 29 when being full, when promptly being in its normal operating condition, the liquid of bend pipe 29 bottoms prevents that the cold air rising from entering exhaust outlet 28, thereby prevent that cold air from entering in the housing 2, thereby by avoiding cold air to go into to help to make the temperature stabilization of enclosure interior and evenly via exhaust outlet 28SI.
Condensate can be from food that is just being toasted in the housing 2 and/or steam generation device 30, and steam generation device 30 is suitable for water vapour is transported in the housing 2.
In a variant form (not shown) of the present invention, exhaust outlet 28 can pass a sidewall 8 and/or pass rear wall 7 openings of housing 2.Under these circumstances, can remove condensate by other method.In another version, the junction of exhaust outlet 28 between diapire 9 and sidewall 8 or rear wall 7.
In the described herein embodiment of the invention, baking box 1 has adjuster 31.Described adjuster 31 comprises discharge side 32 and regulates chamber 33.Discharge side 32 and adjusting chamber 33 are interconnected by slype 51.
Regulate chamber 31 and be positioned at housing 3 inside, after rear wall 7, regulate chamber 31 and be communicated with rear wall 7 by air intake 44.
Water level in the adjuster 31 also can be subjected to emptying valve 36 controls.Described emptying valve 36 can be controlled the flow velocity of water in excretory duct 37, and described excretory duct 37 is connected to the bottom of adjuster 31 on the bend pipe 29.
Water capacity in the adjuster 31 can change the water capacity in the discharge side 32 between high value and low value, described high value is corresponding to the height of first overflow pipe 35, and described low value is corresponding to the height of the junction between excretory duct 37 and the adjuster 31.
Discharge pipe 38 extends between exhaust outlet 28 and high-end 39, high-end 39 on the high low water level of discharge side 32 to discharge side 32 openings.This discharge pipe 38 is opening between exhaust outlet 28 and bend pipe 29.
In the present embodiment, adjusting chamber 33 is adjacent with discharge side 32.Regulating chamber 33 and discharge side 32 is separated by separator 43.Separator 43 is not separated discharge side 32 and is regulated chamber 33 with complete sealing means.The effect of separator 43 is restrictions, rather than prevents the gas realized by slype 51 between two housings 32 and 33 and the exchange of water fully.
Regulate chamber 33 and communicate with housing 2 by air intake 44, air intake 44 basically in the intake region that forms by the rotation of fan 12 towards housing 2 openings.Regulate chamber 33 and also entering pipe 45 and exterior in the chamber 33, make water level under inlet tube 45 by air being entered regulate.
But, if the pressure in the housing 2 rises,, no matter regulate any position of water level between its high water level and its low water level in the chamber 33 even exhaust outlet 28 or discharge pipe 38 get clogged, burning gases can also be discharged by entering pipe 45.Immerse under the water level of regulating in the chamber if enter pipe 45, then combustion gas physical efficiency " bubbling " and discharge.Regulate the effect in chamber 33 thereby not only be controlled humidity but also can be used for controlling pressure in the housing 2, regulating chamber 33 does not use the mechanical system of any opening and closing pipeline to realize above-mentioned control, wherein, it makes cold dry air enter controlled humidity by entering pipe 45 by changing water level.Regulate chamber 31 thereby realized being similar to mechanical system, for example, the function of detachable cap has the advantage that does not get clogged with inaccessible but regulate chamber 31, thereby makes baking box of the present invention safer.
First temperature sensor 46 is placed in the discharge side 32 to measure the temperature that enters and pass through the gas of discharge pipe 38 transmission from exhaust outlet 28.Second temperature sensor 47 is placed on to be regulated in the chamber 33 to measure the temperature that enters the gas in the housing 2 by air intake 44.Under bend pipe 29 prevented situation that the cold air of housing 2 outsides enters, first temperature sensor 46 was measured the temperature that can represent housing 2 temperature.The temperature that second temperature sensor 47 is measured can be represented by entering pipe 45 air themperatures that enter.
First and second temperature sensors 46 and 47 are connected to the calculation element 482 of the relative humidity that is used to measure housing 2 inside:.Calculation element 48 in a conventional manner, for example by the temperature difference between first temperature sensor 46 and second temperature sensor 47 and calculate the relative humidity of housing 2 inside according to existing scale.
In the present embodiment, baking box of the present invention also is useful on steam (steam) is transported to steam generation device 30 in the housing 2.In the present embodiment, these steam generation devices 30 comprise water column pipe 49 and scatterer 50.
Flowing near disk 50 water from water column pipe 49 falls on the disk 50.The disk 50 that is heated by gas range makes the part of described water evaporate then.Another part water is sprayed by disk 50 and evaporates in the flame of gas range 11.Neither be injected on wall 7,8,9 and 10 because of contact disk 50 evaporates another part water that neither evaporate in the flame of gas range 11, especially be injected on the roof 10.The water that is ejected on the roof 10 is fallen on the top pallet, 27 flows to another pallet 26 towards diapire 9 from a pallet 26 by boring a hole then, and reclaims by exhaust outlet 28 at diapire 9 place's water.This has prevented to be placed on and has formed dry and/or burned epidermis on the food in the pallet 26.
The ratio that is ejected into the water on the roof 10 can be controlled by the rotary speed that changes scattering disk 50.
The pressure reduction of peak level and low side outlet between 55 is in the scope between 5 millibars (mbar) and 30 millibars in the water column pipe 49.As long as the water level in the water column pipe 49 keeps constant, pressure reduction keeps constant equally, unless housing 2 pressure inside rise.As long as housing 2 pressure inside keep equaling the pressure of housing 2 outsides basically, i.e. atmospheric pressure, water also keeps constant basically by the flow velocity of low side outlet 55 so.But if the housing 2 inner steam that produce, housing 2 pressure inside will rise so, be higher than the pressure of housing 2 outsides.Pressure reduction between peak level and the low side outlet 55 will descend then, thereby the flow velocity that water flows out by low side outlet 55 also descends.Thereby water column pipe 49 inner speed that produce steam of adjustment housings 2 automatically.High-end outlet 54 communicates with water-feed 34.The water that flows by high-end outlet 54 enters adjuster 31
As shown in Figure 5, pipeline 53 has a part that forms cooling circuit 56 between water receiver 52 and low side outlet 55.Described cooling circuit 56 forms gentle Yan coil pipe, and it extends and contact roof 10 in housing 2 outsides on the part of roof 10.As example, described coil pipe is joined with tight subsides of groove that is formed on during punching press in the sheet metal that constitutes roof 10.
Thereby roof 10 is cooled, and this helps the condensation of at least a portion steam of being contained in housing 2 internal gas.The water of condensation can drip on the top pallet on roof 10.Because the bottom of pallet 26 has perforation 27, water drips to another pallet towards diapire 9 from a pallet then, gathers in the outlet 28 at diapire 9 place's water.This can be used for preventing forming dry and/or burned surface on the food in the pallet 26.
In variant form shown in Figure 6, first temperature sensor 46 is placed in the discharge side 32 with aforementioned manner, but second temperature sensor 47 also is placed in the discharge side, is arranged in the water under the low water level.Like this, first temperature sensor 46 is measured the temperature of representing housing 2 internal temperatures as above-mentioned explanation, and what second temperature sensor 47 was measured then is stable basically, can be used to determine the reference temperature of relative humidity in the housing 2.
In another variant form shown in Figure 7, cooling circuit 56 is arranged on the upstream of water receiver 52.
Fig. 8 has shown second embodiment of baking box 1 of the present invention.In the present embodiment, baking box 1 of the present invention is similar to the described baking box of first embodiment.Its main difference is: heater 11 is made of resistance heater, rather than is made of gas range.Described resistance heater 11 is located substantially on the position identical with the gas range of previous embodiment description.Resistance heater 11 part at least is arranged in central space 23.The function that resistance heater and gas range are realized is basic identical.Especially it adds thermal scattering disk 50.
In a variant form, the water in the water column pipe 49 flows directly to (in this case, baking box 1 of the present invention not necessarily needs scattering disk 50) on the resistance heater.Then the steam that produces is sucked away and is dispersed in the housing by fan 12.
Fig. 9 has shown the 3rd embodiment of baking box 1 of the present invention.In the present embodiment, baking box 1 of the present invention is similar to the described baking box of second embodiment.Its main difference is: scattering disk 50 replaces by spraying cylinder 57, and heater 11 is made of resistance heater, and it is set to around the ring of fan 12 or hat.
Similarly, when baking box 1 was not used to cooking food, water column pipe 49 can be sent to cleaning agent near the fan with Song.Thereby, spray cylinder 57 and realized basically and described scattering disk 50 identical functions of previous embodiment.
Figure 10 has shown the 4th embodiment of baking box 1 of the present invention.In the present embodiment, baking box 1 of the present invention is similar to the described baking box of second embodiment.Its main difference is: as the 3rd embodiment, heater 11 is set to the ring around fan 12, additional heater 61 basically towards scattering disk 50 with the heating disk 50.These additional heaters 61 for example are made of resistance heater.
Under the situation that does not exceed the scope of the invention, baking box of the present invention can have many versions.
Thereby in unshowned a kind of variant form, housing 2 has front surface and rear surface, and each surface can both be opened or closed by door.In this case, fan 12 for example is installed at least one sidewall 8, and heater 11 is towards each fan 12.
In the version of the present invention shown in Figure 11 and 12, baking box according to the present invention comprises the container 65 that is used for cleaning agent.More precisely, container 65 inserts in the feed system of cleaning agent 49, is positioned on gas range 11, fan 12 and the protective grille 13.Water is transported in the container 65 by water column pipe 49.Cleaning agent dilutes in water, and the cleaning agent that flows out from container 65 flows to low side outlet 550 from container then at least in part
Cleaning agent can be a liquid, also can be solid.If cleaning agent is a solid, cleaning agent for example, is fritter or the bead that compressing powder forms so.
As shown in figure 12, for example, container 65 at one end has the opening of parallelepiped shape on the face.Described container 65 comprises chamber 66, and bead 67 can insert in this chamber 66.Chamber 66 is suitable for making water to flow around bead 67, and the cleaning agent that is diluted in the water is assembled so that cleaning agent is discharged towards low side outlet 55.
Certainly, container 65 can be used in combination with in the further feature structure of the present invention any, also can use separately.
In other variant form, a plurality of fans 12 are arranged on the identical wall with a plurality of gas ranges 11.
In another variant form shown in Figure 13 to 15, be according to the embodiment of baking box of the present invention and front and the main difference of variant form: the baking box among this embodiment comprises the device that is used to send the heating process end signal.
As shown in figure 13, baking box 1 comprises the housing 2 that is contained in the shell 3.Described shell 3 has adjusting device 74.Adjusting device 74 comprises the device of the temperature that is used for adjustment housings 2 and humidity and is used to produce a kind of device that shows the audible signal that heating process finishes.Adjusting device 74 is also controlled lighting device 80, and door 5 is used for food to be heated and/or to be baked is put into described housing 2.
As shown in figure 14, door 5 is double-walled doors.Door comprises two panels 75,76 that glass is housed, i.e. wainscot 75 standing grain mouth sunset I, panel 76.
Door 5 is installed in sidewall 8a by hinge 95 rotatably around vertical axis, on the sidewall 8a among the 8b.
According to other embodiments of the invention, which floor a lamp can throw light on.For example, in baking box 1, proved that three lamps that distribute are enough on whole height with ten pallets 26.
When the predetermined heat process finished, control device 74 caused lighting device 80,81 flashes of light.
In another variant form shown in Figure 16 to 19, baking box according to the present invention mainly is with the different of previous embodiment and variant form: the baking box of present embodiment comprises the device that is used to brake and/or drive and/or change the direction of rotation of fan 12.
According to version shown in Figure 16, baking box 1 according to the present invention comprises housing 2 (or muffle burner hearth), and it is closed by door 5, and door 5 is used for the food to be heated and/or to be baked housing 2 of packing into.
Sidewall is suitable for supporting 20 pallets 26, and food to be heated and/or to be baked is contained on this pallet 26.
On its rear wall 7, baking box 1 has two, and annular ring is around the heater 11 of trunnion axis X and X respectively, and described diaxon is perpendicular to sidewall 7.In the present embodiment, heater 11 is resistors.
Two fans 12 are installed so that they are respectively around axle X and X ' rotation.Each fan 12 is by being positioned at an X and X, one of supercentral disk 20 constitute.Place at the outer of disk 20, each fan 12 comprises a plurality of around axle X or X, the blade 22 of isogonism pitch arrangement.These blades 22 for example are made of flat rectangular strip or thin slice, and described rectangular strip and thin slice extend on the plane that is substantially perpendicular to disk 20 and process axle X and X.This about axle X or X, symmetry make blade 22 can be in the same manner clockwise and be rotated counterclockwise.
On the one hand, each blade 22 is connected with disk 20 by first edge 70, on the other hand, is connected with hat 71 by second edge 72.Hat 71 is annular, and its external diameter is substantially equal to the external diameter of disk 20.Intact 71 be centered close to corresponding axis X or X, on.Hat 71 extends on the plane that is parallel to disk 20.
The diameter of disk 20 is basically less than the diameter of an annulus that extends thereon.
Each fan 12, drives by motor M or M by axle 87, and axle 87 extends with axle X or X.
Each motor M or M for example are single-phase four-stage motors, and power is 250 watts.
As shown in figure 17, each motor M or M; Comprise main coil 78 and time coil 89.
By power circuit 91 from power supply 90 to motor M and M, carry alternating current.
Each motor M or M are controlled by the first switching device shifter K1, the second switching device shifter K2 and the 3rd switching device shifter K3.The first switching device shifter K1 for example is made of electromechanics or relay.They can make the sense of current in the main coil 88 reverse with respect to the sense of current of inferior coil 89.
For example by putting into motor M and M, the electronics relaying power relay in the power supply circuits 91 constitutes the second switching device shifter K2.This relay is so-called non-same period of a type.
The 3rd switching device shifter K3 for example is made of relay.The effect of described relay is equivalent to motor M and M, the interface of power circuit 91 and electronic-controlled installation (not shown).Described relay is controlled each motor M or M, the first switching device shifter K1.
The second switching device shifter K2 and the 3rd switching device shifter K3 for example are installed on the relay plug-in unit 94.
The second switching device shifter K2 is started by electronic-controlled installation at point of zero voltage (be the some Z among Figure 18, the figure shows and be input to motor M and M, the positive half period P and the negative half-cycle of the sine-wave current of power circuit 91).Point of zero voltage Z is detected by electronic-controlled installation.
Electronic-controlled installation starts the second switching device shifter K2 by point of zero voltage Z point place, only positive half period P and even only make motor M and M in the part-time (shadow region among Figure 18) at positive half period P, be connected with power supply, to reduce braking motor M and M, required electric energy.Like this, (referring to the F among Figure 19) flows to motor M and M during braking, electric current be rectified current.Because this respect of the present invention, thereby can not use rectifier bridge.
On the contrary, for at motor M and M, the driving stage E to motor M and M, transmission of electric energy, the second switching device shifter K2 still can be started by electronic-controlled installation by point of zero voltage Z the time, motor M and M ' are connected on the power supply 90, to reduce the speed of motor M and M ' at all positive half period P with during small part negative half-cycle N.
In order to obtain better retardation efficiency, before carrying rectified current, can change motor M and M earlier by means of the second switching device shifter K2, direction of rotation.This oppositely is to make the sense of current in the main coil 88 with respect to motor M and M by the first switching device shifter K1, inferior coil 89 oppositely realize.
In order to prevent motor M and M, after braking, do not change direction of rotation and restart, the second switching device shifter K2 is at deboost phase F end and motor M and M, and is with the driving stage E stop phase R before that the speed of expecting restarts, for example multiple past during 2 seconds.
Figure 19 represents the work period of the first switching device shifter K1 and the second switching device shifter K2.
The first switching device shifter K1 has two states, is expressed as state 0 and state 1 on the upper curve of Figure 19.State 0 is corresponding to clockwise direction, and state 1 is corresponding to counterclockwise.
In the lower curve of Figure 19, the state 0 expression second switching device shifter K2 makes motor M and M, disconnects with power supply 90, and state 1 is illustrated in and flows to motor M and M, each period T of alternating current during the second switching device shifter K2 with motor M and M, be connected on the power supply 90.Intermediateness between state 0 and the state 1 is corresponding to deboost phase F.As indicated in top, only during the part of positive half period P, make motor M and M by the second switching device shifter K2, be connected to and reach this state on the power supply 90.Any value between this state desirable 0 and 1 is supplied with motor M and M to be reduced in deboost phase F, power.
The situation of reciprocity ground consideration positive half period or negative half-cycle is proved to be equivalence.Though thereby what describe as example is that the second switching device shifter K2 makes motor M and M during part P positive period, disconnects with power supply 90, equally also can be described as second switching device shifter and remove and during part negative half-cycle N, make motor and power supply 90 disconnections, or the like.
Certainly, under the situation that does not exceed scope of the present invention, any feature of one of version or embodiment all can combine with one or more other features.
Claims (12)
1. baking box that is used for cooking food, comprise: be used to hold and heat food and the housing (2) that comprises curing environment, described baking box comprises: the fan (12) that stirs the baking air, be used for clockwise and counterclockwise driven fan (12) motor rotating (M, M '), described motor (M, M ') has main coil (88 '), with first switching device shifter, be used to make motor (M, M ') direction of rotation is reverse, it is characterized in that: main coil (88 ') is powered by the AC power that predetermined period is arranged (90), also comprise second switching device shifter (K2), (P during at least a portion of at least one half period N) disconnects main coil (88 ') and AC power in two half periods of each ac period of deboost phase (F) for it.
2. baking box according to claim 1, wherein, in the positive half period (P) or negative half-cycle (N) of the alternating current of deboost phase (F), second switching device shifter disconnects main coil (88 ') and AC power (90).
3. baking box according to claim 1, wherein, during the negative half-cycle (N) of the alternating current of deboost phase (F) and the part positive half period (P) or during the positive half period (P) and part negative half-cycle (N) at alternating current, second change-over switch disconnects main coil (88 ') and AC power (90).
4. according to each described baking box in the claim 1 to 3, wherein at the positive half period (P) of the alternating current in driving stage (E) with during the small part negative half-cycle (N) or at the negative half-cycle (N) of alternating current with during the small part positive half period (P), second switching device shifter is connected to main coil (88 ') on the AC power (90).
5. baking box according to claim 1, wherein motor (M, M ') has inferior coil (89), and (F) is preceding in the deboost phase, and first switching device shifter is reverse with the sense of current in main coil (88) and time coil (89).
6. baking box according to claim 1 wherein, is right after during deboost phase (F) stop phase (R) afterwards, and second switching device shifter disconnects main coil (88) and AC power (90).
7. process of controlling the cooking food in the baking box, wherein, baking air in the baking box (1) stirs by fan (12), fan (12) is by the motor (M that main coil (88) is arranged, M ') drives, under the help of first switching device shifter, motor (M, M ') direction of rotation is that clockwise and counterclockwise driven fan (12) is reversed, it is characterized in that: main coil (88) is by the AC-powered that predetermined period is arranged, with in two half periods in each cycle of alternating current of deboost phase (F) to small part in period, main coil (88) disconnects with AC power (90).
8. process according to claim 7, wherein, during the positive half period (P) or negative half-cycle (N) of the alternating current of deboost phase, main coil (88) disconnects with AC power (90).
9. process according to claim 7, wherein, during the negative half-cycle (N) of the alternating current of deboost phase (F) and the part positive half period (P) or during the positive half period (P) and part negative half-cycle (N) at alternating current, main coil (88) disconnects with AC power (90).
10. according to the described process of claim 7 to 9, wherein, at the positive half period (P) of the alternating current in driving stage (E) with during the small part negative half-cycle (N) or at the negative half-cycle (N) of alternating current with during the small part positive half period (P), main coil (88) is connected on the AC power (90).
11. process according to claim 7, wherein, motor (M, M ') has inferior coil (89), and the sense of current in main coil (88) and time coil (89) was reversed before in the deboost phase (F).
12. process according to claim 7, wherein during being right after the deboost phase (F) stop phase (R) afterwards, main coil (88) disconnects with AC power (90).
Applications Claiming Priority (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR02/16585 | 2002-12-23 | ||
| FR02/16589 | 2002-12-23 | ||
| FR02/16584 | 2002-12-23 | ||
| FR02/16590 | 2002-12-23 | ||
| FR02/16586 | 2002-12-23 | ||
| FR0216580A FR2849162A1 (en) | 2002-12-23 | 2002-12-23 | Oven for cooking food, has vane connected to rotation axis such that air coming from air inlet penetrates directly inside circular trajectory of vane before being expelled into rest of chamber space |
| FR02/16588 | 2002-12-23 | ||
| FR02/16580 | 2002-12-23 | ||
| FR02/16583 | 2002-12-23 | ||
| FR03/01295 | 2003-02-04 | ||
| FR03/01437 | 2003-02-06 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003801071875A Division CN100392326C (en) | 2002-12-23 | 2003-12-23 | An oven for cooking food |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101011219A CN101011219A (en) | 2007-08-08 |
| CN100522026C true CN100522026C (en) | 2009-08-05 |
Family
ID=32406452
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100015346A Expired - Fee Related CN100522026C (en) | 2002-12-23 | 2003-12-23 | An oven for cooking food |
| CNB2003801071875A Expired - Fee Related CN100392326C (en) | 2002-12-23 | 2003-12-23 | An oven for cooking food |
| CN2007100015350A Expired - Fee Related CN101011220B (en) | 2002-12-23 | 2003-12-23 | An oven for cooking food |
| CN200810166104.4A Expired - Fee Related CN101371757B (en) | 2002-12-23 | 2003-12-23 | An oven for cooking food |
Family Applications After (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003801071875A Expired - Fee Related CN100392326C (en) | 2002-12-23 | 2003-12-23 | An oven for cooking food |
| CN2007100015350A Expired - Fee Related CN101011220B (en) | 2002-12-23 | 2003-12-23 | An oven for cooking food |
| CN200810166104.4A Expired - Fee Related CN101371757B (en) | 2002-12-23 | 2003-12-23 | An oven for cooking food |
Country Status (2)
| Country | Link |
|---|---|
| CN (4) | CN100522026C (en) |
| FR (1) | FR2849162A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2390587B1 (en) * | 2010-05-27 | 2019-07-17 | BSH Hausgeräte GmbH | Cooking device with a steam generation function |
| EP2737254B1 (en) * | 2011-07-25 | 2020-01-15 | Convotherm-Elektrogeräte GmbH | Cooking device |
| JP2015516561A (en) * | 2012-03-28 | 2015-06-11 | ビーイー・エアロスペース・インコーポレーテッド | Vehicle oven with optimized water vapor injector |
| US20150253015A1 (en) * | 2012-08-28 | 2015-09-10 | Electrolux Home Products Corporation N.V. | Method of treating soiled inner walls of an oven cavity and oven implemented for executing such a method |
| AT513798B1 (en) * | 2013-01-07 | 2017-12-15 | Haas Food Equipment Gmbh | Apparatus and method for the metered, shaping output of mass bodies from pumpable masses |
| JP6082988B2 (en) * | 2013-03-14 | 2017-02-22 | パナソニックＩｐマネジメント株式会社 | Steam generator and heating cooker equipped with steam generator |
| US9423139B2 (en) * | 2013-04-01 | 2016-08-23 | Convotherm Elektrogeraete Gmbh | Condensation management system and method |
| WO2015164239A1 (en) * | 2014-04-22 | 2015-10-29 | Illinois Tool Works Inc. | Oven with steam water separation |
| WO2015164235A1 (en) | 2014-04-22 | 2015-10-29 | Illinois Tool Works Inc. | Oven with steam water flow directors |
| WO2015164236A2 (en) | 2014-04-22 | 2015-10-29 | Illinois Tool Works Inc. | Oven with cleaning system and grease and water flow separation |
| CN106108624A (en) * | 2016-08-23 | 2016-11-16 | 赵爱 | Novel scorch integrated box |
| CN110167403A (en) * | 2016-09-02 | 2019-08-23 | 品谱公司 | Heat distributed component and blow vent for bread toaster |
| CN114165817A (en) * | 2017-03-10 | 2022-03-11 | 李明守 | Cooking method for non-stick pan and gas stove |
| CN110631061B (en) * | 2019-08-30 | 2021-01-01 | 广东美的厨房电器制造有限公司 | Combustion detection method and device and cooking equipment |
| CN111493686A (en) * | 2020-05-18 | 2020-08-07 | 闫培培 | Barbecue cup |
| CN111904293B (en) * | 2020-07-17 | 2022-04-01 | 广东美的白色家电技术创新中心有限公司 | Cooking device |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4395233A (en) * | 1981-06-22 | 1983-07-26 | G. S. Blodgett Co., Inc. | Dual flow heating apparatus |
| US4928663A (en) * | 1989-01-31 | 1990-05-29 | Bakers Pride Oven Co. | Enhanced air-flow convection oven |
| IT1234689B (en) * | 1989-03-21 | 1992-05-26 | Zanussi Grandi Impianti Spa | FORCED CONVECTION COOKING OVEN |
| FR2660418A1 (en) * | 1990-04-03 | 1991-10-04 | Bonnet Sa | Oven for cooking food products |
| CN2090669U (en) * | 1991-03-28 | 1991-12-18 | 常永跃 | Multifunctional oven |
| CA2088419A1 (en) * | 1992-02-10 | 1993-08-11 | Gajanan Madhav Prabhu | Gas fired convection oven |
| GB2286455B (en) * | 1994-02-10 | 1998-01-14 | Stoves Plc | Improvements in and relating to gaseous fuel burner assemblies and to appliances incorporating such burner assemblies |
| US5497760A (en) * | 1994-10-17 | 1996-03-12 | G. S. Blodgett Corporation | Convection oven with power induced back draft flow |
| US5619983A (en) * | 1995-05-05 | 1997-04-15 | Middleby Marshall, Inc. | Combination convection steamer oven |
| US5549038A (en) * | 1995-11-16 | 1996-08-27 | Market Forge Industries | Modulated steam cooker |
| FR2754334B1 (en) * | 1996-10-07 | 1998-12-18 | Bourgeois Prod Coop | STEAM OVEN AND FORCED CONVEXION |
| EP0926449B2 (en) * | 1997-12-23 | 2003-05-21 | eloma GmbH Grossküchentechnik | Method for dehumidifying a cooking room of a steam cooking apparatus and apparatus therefor |
| CN2403337Y (en) * | 1999-12-09 | 2000-11-01 | 深圳市宝安区西乡镇臣田唐锋电器厂 | Multi-purpose electric oven |
-
2002
- 2002-12-23 FR FR0216580A patent/FR2849162A1/en not_active Withdrawn
-
2003
- 2003-12-23 CN CNB2007100015346A patent/CN100522026C/en not_active Expired - Fee Related
- 2003-12-23 CN CNB2003801071875A patent/CN100392326C/en not_active Expired - Fee Related
- 2003-12-23 CN CN2007100015350A patent/CN101011220B/en not_active Expired - Fee Related
- 2003-12-23 CN CN200810166104.4A patent/CN101371757B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101011220A (en) | 2007-08-08 |
| CN101371757A (en) | 2009-02-25 |
| CN100392326C (en) | 2008-06-04 |
| CN1729374A (en) | 2006-02-01 |
| CN101371757B (en) | 2014-01-29 |
| CN101011220B (en) | 2010-12-29 |
| CN101011219A (en) | 2007-08-08 |
| FR2849162A1 (en) | 2004-06-25 |
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