CN110332645B - Kitchen total heat recovery new fan - Google Patents
Kitchen total heat recovery new fan Download PDFInfo
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- CN110332645B CN110332645B CN201910698851.0A CN201910698851A CN110332645B CN 110332645 B CN110332645 B CN 110332645B CN 201910698851 A CN201910698851 A CN 201910698851A CN 110332645 B CN110332645 B CN 110332645B
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- 238000011084 recovery Methods 0.000 title claims abstract description 28
- 239000000779 smoke Substances 0.000 claims abstract description 121
- 238000009826 distribution Methods 0.000 claims abstract description 65
- 239000010865 sewage Substances 0.000 claims abstract description 62
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 36
- 239000001301 oxygen Substances 0.000 claims abstract description 36
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 238000005192 partition Methods 0.000 claims abstract description 17
- 238000003915 air pollution Methods 0.000 claims abstract description 8
- 230000009286 beneficial effect Effects 0.000 claims abstract description 5
- 239000003517 fume Substances 0.000 claims description 22
- 239000002699 waste material Substances 0.000 claims description 22
- 238000002485 combustion reaction Methods 0.000 claims description 19
- 238000007599 discharging Methods 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 230000003247 decreasing effect Effects 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 8
- 239000010802 sludge Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000010806 kitchen waste Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000004887 air purification Methods 0.000 abstract description 2
- 238000010411 cooking Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 7
- 238000000746 purification Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 206010021143 Hypoxia Diseases 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000007954 hypoxia Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
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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
- F24C15/20—Removing cooking fumes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/18—Details or features not otherwise provided for combined with domestic apparatus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Ventilation (AREA)
Abstract
A kitchen total heat recovery fresh air machine belongs to the technical field of air purification, total heat recovery and oxygen supply, and comprises a smoke exhaust ventilator, a high-temperature heat exchanger, a low-temperature heat exchanger, a fresh air distribution pipe, a fresh air distribution box, a fresh air inlet pipe, a direct-discharge back-discharge change-over switch, a fresh air inlet pipe, a fresh air connecting pipe and a dirty air connecting pipe; the smoke exhaust ventilator comprises a direct sewage wind exhaust port, a right sewage wind exhaust port, a rear fresh air inlet and a front fresh air exhaust port; the high-temperature heat exchanger comprises a left end plate, a right end plate, more than 20 heat exchange tubes A, a fresh air inlet, a fresh air outlet and a middle partition plate; the low-temperature heat exchanger comprises a box body, a low-air-pollution air inlet, a low-air-pollution air outlet, a fresh air fan mounting plate, a heat exchange tube B, a heat transfer chamber, a fresh air outlet cavity, a fresh air fan, a sealing door B, a low-air-pollution air inlet and a low-air-pollution air outlet; the beneficial effects of the invention are as follows: the device is suitable for all-weather kitchen oxygen supply and pollution discharge, fresh air is introduced in winter, dirty air is discharged, and meanwhile, the full heat energy of the dirty air is recovered.
Description
Technical Field
The invention relates to a fresh air machine, in particular to a kitchen total heat recovery fresh air machine, which relates to a purification and total heat recovery oxygen supply technology of fresh air and kitchen fume, and belongs to the technical fields of air purification, total heat recovery and oxygen supply.
Background
The kitchen is internally provided with a kitchen hood, and the kitchen hood is connected with a kitchen cabinet through a pipeline. In particular, in winter, the oil smoke is extremely easy to condense into oil sludge, which pollutes the environment. Because of the pollution of the oil smoke, the kitchen can not be provided with an air conditioner or other heating devices, the kitchen temperature is very low, high-temperature oil smoke is discharged, and meanwhile, cold air is introduced into the room, so that the kitchen becomes an ice warehouse. Even if the kitchen has a heating device, the smoke exhaust ventilator not only discharges the heated oil smoke outdoors, but also discharges the heat of the heating device outdoors. The kitchen is a room with high consumption of oxygen, and the kitchen is required to be supplied with oxygen fresh air, so that a large amount of kitchen heat is consumed when the fresh air is heated, and the kitchen is heated, so that a great difficulty is brought to the kitchen. At present, most rooms cannot be provided with heat pump air conditioners, under the condition that no method exists in the north, a heater is arranged in a kitchen, oil pollution of the heater is maintained by a smoke exhaust ventilator, most of smoke exhaust ventilator is not closed, the problem that the smoke exhaust ventilator is difficult to solve is solved by the benefit of the smoke exhaust ventilator, and the problem that a radiator in the kitchen is polluted by the smoke in a short period is not completely solved yet. On one hand, the kitchen generates high-heat oil smoke, on the other hand, the kitchen is cold and incomparable, the energy is wasted, the pollution of the oil smoke and the environmental hypoxia become the problems to be comprehensively solved in the kitchen.
The pollution produced by the kitchen is serious, the high heat and energy loss can not be treated by an air conditioner and an energy recovery device, when the kitchen is sealed by adopting the unidirectional flow smoke exhaust ventilator at present, the pollutants such as the oil smoke, the high heat, the carbon monoxide, the carbon dioxide, the smoke dust and the like in the kitchen are difficult to exhaust even if a high-power fan is used, and the oxygen deficiency and the polluted gas in the kitchen can not be effectively treated.
The temperature of the outdoor fresh air introduced in winter is very low, and the temperature of the dirty air containing the oil smoke is higher because of the heating of the food by the combustion furnace, the low-temperature fresh air meets with Gao Wenwu air at the inlet end of the high-temperature oil smoke purifying heat exchanger to form high-temperature difference heat exchange, and the oil gas in the oil smoke can be changed into oil liquid because the oil smoke is at the high-temperature side, oil sludge and solid oil blocks can not be formed, and the oil liquid can flow into the oil storage tank. The energy loss is serious when fresh air is supplied to the kitchen in winter, the kitchen is cold and the high heat of the kitchen can not be discharged in summer and is in a serious hot state,
the dirty air and the fresh air flow reversely in the air curtain cover, when the fresh air is not distributed well under the condition that the dirty air occupies the inner space, the short circuit is easy to be caused, the fresh air is directly sucked to the dirty air channel by the dirty air blower from the air outlet, and the dirty air is remained in the kitchen. The design of leading out the fresh air of the air curtain from the side of the cooking bench and directly flowing to the sewage channel in the same direction with the fresh air is provided, and the design can ensure the sealing performance of the sewage outflow, and the fresh air cannot be fully applied and directly discharged from the sewage channel due to low pressure and slow flow rate of the sewage at the same-direction flow center.
Disclosure of Invention
The invention aims at overcoming the defects of no cold ratio, energy waste, oil smoke pollution and environmental hypoxia in a kitchen in the prior art in winter, and provides a novel kitchen total heat recovery fan which can achieve the purposes of introducing fresh air and simultaneously exhausting the two-way flow design of the polluted air in the kitchen aiming at the energy waste, the oil smoke pollution and the introduction of the fresh air in the kitchen.
The technical scheme adopted by the invention for realizing the purpose is as follows: the kitchen total heat recovery fresh air machine comprises a smoke ventilator, wherein the smoke ventilator comprises a shell at the upper part of the smoke ventilator, a smoke prevention cover at the lower part of the smoke ventilator, and a dirty air direct exhaust port, a combustion furnace is arranged below the smoke prevention cover, a dirty air direct exhaust channel and a high-temperature heat exchanger channel are arranged in the shell of the smoke ventilator, and the functions of the single channel and the double channels are increased by 2 times; the bottom of the dirty air direct-discharge channel is provided with a dirty air inlet, and a dirty air blower is arranged above the dirty air inlet;
the smoke exhaust ventilator further comprises a right dirty air outlet, a rear fresh air inlet and a front fresh air outlet; the kitchen total heat recovery fresh air machine also comprises a high-temperature heat exchanger, a low-temperature heat exchanger, a fresh air distribution pipe, a fresh air distribution box and a fresh air inlet pipe; the fresh air rear air inlet is connected with a fresh air inlet pipe; the high-temperature heat exchanger is arranged in a high-temperature heat exchanger channel of the smoke exhaust ventilator and above the sewage fan, one side of the high-temperature heat exchanger is provided with a fresh air front air outlet, one side of the low-temperature heat exchanger is provided with a fresh air low air inlet, and a fresh air connecting pipe is arranged between the fresh air front air outlet and the fresh air low air inlet; the other side of the low-temperature heat exchanger is provided with a fresh air low-temperature air outlet which is connected with a fresh air distribution pipe, the fresh air distribution pipe is connected with a fresh air distribution box, and the fresh air distribution box supplies oxygen to the combustion furnace and chefs; the fresh air distribution box comprises a fresh air left outlet, a fresh air right outlet and 2 air deflectors, and the fresh air left outlet and the fresh air right outlet are respectively arranged at two sides of the lower part of the fresh air distribution box; the 2 air deflectors are respectively arranged at the inner sides of the left fresh air outlet and the right fresh air outlet, the included angle between the air deflectors and the outer side in the horizontal direction is 60-90 degrees, the air outlet angle of the fresh air is controlled to be 60-90 degrees, the inner side of the upper fresh air outlet to the outer side of the dirty air inlet are dead zones of air flow, short circuits of the fresh air and the dirty air are isolated, the surrounding situation of the fresh air to the dirty air is ensured, and the fresh air can directly reach the lower part of the cooking bench; when the cooking bench burns, the lower part of the cooking bench has the air suction phenomenon, fresh air enters the cooking bench from the lower part to support combustion, the hot air of the polluted air formed by burning has the automatic rising thrust, the hot air and the pulling force generated by the polluted air blower form a short circuit, the peripheral fresh air does not occupy the space in the polluted air, the fresh air can prevent the external benefit of the polluted air, the fresh air can directly blow to the vicinity of the cooking bench, the oxygen supply channel of the cooking bench with suction is used for sucking the oxygen supply of the cooking bench to support combustion, the bidirectional flow design of introducing the fresh air and discharging the polluted air in the kitchen is realized, and the air pressure balance in the kitchen can be realized.
An oil stain collecting box is arranged at the lower part of the sewage fan and at the upper part in the smoke prevention cover; a direct-discharge back-discharge change-over switch is arranged in the shell and above the sewage fan, and is positioned below the sewage air direct-discharge channel and the high-temperature heat exchanger channel, the flow direction of the oil smoke is controlled by the direct-discharge back-discharge change-over switch, and the sewage air direct-discharge channel and the high-temperature heat exchanger channel realize the functions of discharging sewage air and recycling sewage energy in different periods; the use time after conversion is long, the conversion is generally only 2 times in one year, and after the oil fume is separated out from the liquid oil in the high-temperature heat exchanger, the oil fume can flow to the oil fume collecting box at the lower part along the sewage fan, so that the secondary pollution caused by oil fume purification is solved.
The dirty fan is a backward inclined centrifugal fan, so that axial air supply can be realized, and the installation space of the fan is reduced; the front surface of the smoke exhaust ventilator, on which the high-temperature heat exchanger is arranged, is provided with an exchanger port capable of taking out the high-temperature heat exchanger, and when the smoke is more attached to the heat exchange pipe, the smoke is convenient to take out and clean; the direct-discharge back-discharge change-over switch can be manual, and can also be used for operating automatically with the whole machine and adopting an automatic control mode; the Xia Chunqiu passage for directly discharging the polluted air is opened in three seasons, and the high-temperature heat exchanger passage is closed, so that the functions of directly discharging the polluted air and cooling fresh air can be realized; the direct exhaust channel of the polluted air is closed in winter, the high-temperature heat exchanger channel is opened, the functions of purifying the polluted air and recovering energy can be realized, and meanwhile, the functions of exhausting the polluted air and introducing fresh air are realized.
The high-temperature heat exchanger comprises a left end plate, a right end plate and more than 20 heat exchange tubes A, wherein the heat exchange tubes A are transversely arranged between the left end plate and the right end plate; the inner cavity of the left end plate is a left fresh air cavity, the inner cavity of the right end plate is a right fresh air cavity, a fresh air channel is arranged in the heat exchange tube A, fresh air passes through the heat exchange tube A, and two ends of the fresh air channel are respectively communicated with the left fresh air cavity and the right fresh air cavity; the middle part of the right fresh air cavity is provided with a middle partition plate, one side of the middle partition plate is provided with a fresh air inlet, the other side of the middle partition plate is provided with a fresh air outlet, fresh air can enter the right fresh air cavity from the fresh air inlet and then enter the left fresh air cavity through a fresh air channel corresponding to the right fresh air cavity, enter the right fresh air cavity from the left fresh air cavity through a fresh air channel corresponding to the right fresh air cavity, and finally come out from the fresh air outlet; a dirty air channel between the shell of the smoke exhaust ventilator and the heat exchange tube A forms a dirty air cavity A, dirty air passes through the dirty air cavity A, and dirty air energy flows from the lower part of the heat exchange tube A to the upper part of the heat exchange tube A along the dirty air cavity A; the outer diameter of the heat exchange tube A is 7-50 mm, and the length of the heat exchange tube A is 0.1-10 m.
The high-temperature heat exchanger comprises 91 heat exchange pipes A, the outer diameter of each fresh air pipe A is 9.53mm, the length of each fresh air pipe A is 198mm, the internal ventilation area is 0.0058 square meter, the heat transfer area is 0.54 square meter, the wind speed design is 4.1m/s in the pipes, and the air quantity is 86.4m 3 And/h, the air quantity is equivalent to that of the smoke exhaust ventilator; the heat exchange tube A is drawn stainless steel tubes, aluminum tubes, copper tubes or iron tubes, and is connected with the left end plate and the right end plate in a sealing welding way; the heat exchange tubes A are arranged in staggered mode in the flowing direction of the sewage, so that the sewage can exchange energy with the whole surface of the heat exchange tubes A in a channel in a contact manner; the dirty air passes through the decreasing temperature difference area of the heat exchange pipe A to exchange heat rapidly, and the oil fume is totally phase-changed into oil fume and is dripped into the oil fume collecting box at the lower part, so that the oil fume removing function is realized; the high-temperature heat exchanger is provided with a sealing door A, and the high-temperature heat exchanger can be taken out by opening the sealing door A to clean the high-temperature heat exchanger channel.
The low-temperature heat exchanger further comprises a box body, a low-air-pollution air inlet and a low-air-pollution air outlet; a sewage air connecting pipe is arranged between the sewage air right air outlet and the sewage air low air inlet; a fresh air fan mounting plate is arranged in the box body, and divides the inner cavity of the box body into a left heat transfer chamber and a right fresh air outlet chamber; the two sides of the heat transfer chamber are respectively provided with a left baffle plate and a right baffle plate, more than 40 heat exchange tubes B are transversely arranged between the left baffle plate and the right baffle plate and in the heat transfer chamber, and two ends of each heat exchange tube B are respectively communicated with the inner cavities of the left baffle plate and the inner cavities of the right baffle plate; the outer diameter of the heat exchange tube B is 7-50 mm, and the length is 0.1-10 m; in the heat transfer chamber, a dirty air cavity B is formed in the space between the heat exchange pipes B, dirty air passes through the dirty air cavity B, and dirty air energy flows from the upper part of the heat exchange pipes B to the lower part of the heat exchange pipes B along the dirty air cavity B; a fresh air fan is arranged in the fresh air outlet cavity, and the fresh air fan is fixedly arranged on a fresh air fan mounting plate; the fresh air low air inlet is arranged on the left side of the left partition plate and communicated with the inner cavity of the left partition plate, and the fresh air low air outlet is arranged on the right side of the box body and communicated with the fresh air outlet cavity; the low-wind-pollution air inlet is arranged on the upper side of the box body and communicated with the upper part of the heat transfer chamber, and the low-wind-pollution air outlet is arranged on the lower side of the box body and communicated with the lower part of the heat transfer chamber.
182 heat exchange tubes B are transversely arranged on the low-temperature heat exchanger, the outer diameter is 9.53mm, the length is 255mm, the inner ventilation area is 0.0116 square meter, the heat transfer area is 1.31 square meter, and the air quantity is 86.4m 3 The wind speed in the tube is 2.07m/s, the wind speed is lower, and the heat transfer is more sufficient; the heat exchange tube B is drawn stainless steel tube, aluminum tube, copper tube or stainless iron tube;
the low-temperature heat exchanger is a subsequent energy recovery device of the high-temperature heat exchanger, the fresh air fan adopts a backward inclined centrifugal fan, and the damping flow of the whole fresh air is an air suction flow; the fresh air flows in the heat exchange tube B, the dirty air flows outside the heat exchange tube B, in order to not adhere to the concentrated oil sludge on the heat exchange tube, the fresh air and the dirty air adopt 90-degree cross decreasing type heat transfer, the temperature of the dirty air gradually decreases from top to bottom, the fresh air gradually increases from left to right, the temperature of the fresh air and the temperature of the dirty air are gradually close, and the residual gaseous oil in the oil smoke cannot be continuously liquefied and concentrated due to small temperature difference, so that the attached oil sludge cannot be generated in the whole low-temperature heat exchanger to influence the heat exchange effect; the box body of the low-temperature heat exchanger is reserved with a heat exchanger taking-out channel, the front surface of the box body is provided with a sealing door B, the front surface sealing door can be opened when necessary, the low-temperature heat exchanger is taken out from the smoke exhaust ventilator for cleaning, and then the smoke exhaust ventilator is installed.
The fresh air distribution box further comprises a fresh air left air inlet, a fresh air right air inlet and a pull box; the fresh air left air inlet and the fresh air right air inlet are respectively arranged above the front part of the fresh air distribution box, and the pull box is arranged at the front end part of the fresh air distribution box; the box comprises a fresh air front outlet arranged below the box, and a fresh air left air outlet window and a fresh air right air outlet window which are arranged at the front end of the box; the fresh air distribution box is a key device for distributing fresh air outlet, and the distribution box distributes introduced fresh air to an air curtain fresh air position and an oxygen supply position for chefs; the included angle between the air deflector and the horizontal direction of the outer side is 75 degrees, and the upward sewage flow is surrounded by the downward fresh air flow with 75 degrees on the outer side according to different wind outlet speeds;
the fresh air distributing pipe further comprises a distributing pipe fresh air inlet, a distributing pipe left outlet and a distributing pipe right outlet; one end of a left outlet of the distributing pipe and one end of a right outlet of the distributing pipe are connected in parallel and then connected with a fresh air inlet of the distributing pipe; the other end of the left outlet of the distributing pipe is connected with a left fresh air inlet of the fresh air distributing box, and the other end of the right outlet of the distributing pipe is connected with a right fresh air inlet of the fresh air distributing box 5.
A three-way pipe is arranged in the fresh air inlet pipe, the inlet end of the three-way pipe is directly connected with the outside of the kitchen, and the first outlet of the three-way pipe is connected with the fresh air rear air inlet; the second outlet of the three-way pipe is connected with a fresh air straight-through air inlet at the upper part of a fresh air outlet cavity of the low-temperature heat exchanger through an air valve, fresh air is directly led to a fresh air fan, the fresh air is sent from a fresh air low-outlet to a fresh air distribution pipe, the fresh air is distributed to a fresh air left air inlet and a fresh air right air inlet, a fresh air distribution box is distributed to a fresh air left outlet and a fresh air right outlet with downward openings, a fresh air left air outlet window and a fresh air right air outlet window with forward windows, the discharge of dirty air is closed, and oxygen is supplied to a combustion furnace and chefs at the same time; fresh air is mainly discharged from the second outlet of the three-way pipe and is directly communicated into the kitchen, and the first outlet channel has larger wind resistance due to the fact that the fresh air needs to pass through the two heat exchangers, and little fresh air enters the kitchen from the first outlet channel.
Compared with the prior art, the invention has the beneficial effects that: introducing fresh air in winter to recover high heat of oil smoke so as to solve the problem of cold of a kitchen in winter; fresh air is introduced in summer to solve the problem of kitchen heat, and the method is suitable for all-weather kitchen oxygen supply and pollution discharge, and mainly aims at introducing fresh air and discharging dirty air in winter, and simultaneously recovering the full heat energy of the dirty air, solving the problems of pollution of kitchen oil smoke to the environment and heating and oxygen supply to a kitchen, and having the following beneficial effects:
1) The invention has three functional modes, namely, the invention has a fresh air introducing channel, and fresh air is introduced in the most energy-saving mode, so as to solve the oxygen supply problem of kitchen stoves and chefs, wherein the open-door and window oxygen supply is also used as the control mode of the patent in spring and autumn, and the oxygen supply is enhanced in winter and summer. And the gradient oxygen supply is carried out at different periods, and the using degree of the fresh air blower reaches an energy-saving mode of least power consumption and oxygen supply.
2) Energy saving, namely, the kitchen total heat fresh air machine can use different functional modes in different environments, and the maximum energy saving effect is achieved in different environments. Under the window opening condition, the fresh air is not required to be introduced in a power consumption mode, and only one sewage fan is used for exhausting the sewage air, so that the best energy saving is achieved during the maximum effect; because the environmental temperature is not low in spring and autumn, the fume is discharged outdoors and cannot condense into liquid oil dirt to pollute the environment, and a fresh air fan is not required to be started to purify the fume; when the smoke exhaust ventilator is used in extreme weather in winter, the 'smoke purification and energy recovery pollution discharge oxygen supply mode' is adopted, so that the energy of the polluted air can be recovered, the energy efficiency ratio is higher than that of the polluted air by more than 18w/w, particularly, the energy of the polluted air in a kitchen can be recovered in winter, the lost waste heat generated by combustion of the cooking range can be recovered, and the total heat recovery effect is achieved.
3) Environmental protection: (1) The kitchen is the largest pollution source of home rooms and restaurants, the air environment in the kitchen is changed by introducing purified fresh air, and the whole indoor ecological environment including the kitchen is protected by exhausting oil smoke and sewage; (2) The purification treatment of the fume and the polluted wind can protect the fume from polluting the outdoor environment; (3) complete pollution discharge: the air curtain is an air sealing wall for blocking air flow from flowing mutually, and is formed by an aerobic fresh air curtain cover, so that pollutants such as oil smoke, carbon monoxide, carbon dioxide, smoke dust, water vapor and the like are directly produced by combustion supporting of a stove in the cover, the polluted air flow is heated to be light, the outer air curtain cover guides the polluted air flow to flow along the negative pressure flow direction generated by the exhaust of the smoke exhaust ventilator, and the external benefit of the polluted air flow in the air curtain cover can be effectively prevented. The polluted air flow generated by the kitchen is completely discharged and purified under the action of a 75-degree air curtain cover sealing wall; (4) constant pressure. The fresh air is introduced and the sewage is discharged to run in a bidirectional flow mode, so that a constant pressure effect is achieved in a kitchen, and the damage of the plateau negative pressure of the unidirectional flow smoke exhaust ventilator to the ecological environment is prevented; even if only purified fresh air is introduced, the polluted air in the kitchen is naturally discharged in an unpowered mode under the drive of positive pressure purified fresh air, so that the pressure in the kitchen is balanced, and a constant pressure effect is achieved; (5) The fresh air introduction and the purification and discharge of the polluted air can desalt and remove the pollution of volatile pollution gases such as formaldehyde and the like generated by kitchen building materials and furniture materials to the kitchen.
4) The use is convenient: the invention has four machines, namely, the smoke exhaust ventilator, the total heat recovery device and the double-flow fresh air machine, automatically controls the multifunctional mode, has different functional modes in different environments, and is convenient to use.
Drawings
Fig. 1 is: front view of the invention;
fig. 2-1 is: right side view of the present invention; fig. 2-2 is: a top view of the invention;
fig. 2-3 are: the invention is a bottom view; fig. 2-4 are: the invention is a perspective view;
fig. 3-1 is: front view of the smoke exhaust ventilator;
fig. 3-2 is: right side view of the smoke exhaust ventilator; fig. 3-3 are: top view ();
fig. 3-4 are: a perspective view of the smoke exhaust ventilator; fig. 3-5 are: a front view of the fume extraction housing;
fig. 4-1 is: a front view of the high temperature heat exchanger;
fig. 4-2 is: a top view of the high temperature heat exchanger; fig. 4-3 are: a high temperature heat exchanger left side view;
fig. 4-4 are: a right side view of the high temperature heat exchanger; fig. 4-5 are: a high temperature heat exchanger perspective view;
fig. 5-1 is: a front view of the cryogenic heat exchanger; fig. 5-2 is: a low temperature heat exchanger perspective view;
fig. 6-1 is: a front view of the fresh air distribution box;
fig. 6-2 is: a top view of the fresh air distribution box; fig. 6-3 are: a bottom view of the fresh air distribution box;
fig. 6-4 are: a three-dimensional schematic diagram of a fresh air distribution box; fig. 6-5 are: a perspective view of a fresh air distribution pipe;
Fig. 7-1 is: in the embodiment 2, a front view of the low-temperature heat exchanger (with a fresh air through air inlet);
fig. 7-2 is: example 2 shows the trend of fresh air (with tee).
Reference numerals illustrate: the range hood 1, the shell 101, the fume hood 102, the dirty air direct exhaust channel 103, the high temperature heat exchanger channel 104, the dirty air inlet 105, the dirty air blower 106, the dirty air collecting box 107, the direct exhaust return switch 108, the exchanger port 109, the dirty air direct exhaust port 1010, the dirty air right air outlet 1011, the rear fresh air inlet 1012, the front fresh air outlet 1013, the high temperature heat exchanger 2, the left end plate 201, the right end plate 202, the heat exchange tube A203, the fresh air inlet 204, the fresh air outlet 205, the middle partition 206, the left fresh air chamber 207, the right fresh air chamber 208, the sealing door A209, the low temperature heat exchanger 3, the box 301, the dirty air low air inlet 302, the dirty air low air outlet 303, the fresh air blower mounting plate 304, the heat exchange tube B305, the heat transfer chamber 306, the fresh air outlet chamber 307, the fresh air blower 308, the sealing door B309, the low air inlet 3010, the low air outlet 3011, the front air inlet 3012, the fresh air distribution tube 4, the distribution tube fresh air inlet 401, the distribution tube left outlet 402, the right air outlet 403, the distribution box 5, the left outlet 502, the right outlet 502, the air guide plate 504, the right outlet 503, the left air inlet window 506, the front air inlet duct 8, the air inlet window 507, the air inlet duct 8, the dirty air inlet connection duct 8, the dirty air inlet window 508, the dirty air inlet duct 8, the dirty air inlet connection duct inlet valve outlet 508, and the dirty air inlet.
Detailed Description
The invention will now be further described with reference to the drawings and specific examples, which are not intended to limit the invention.
Example 1:
as shown in fig. 1 to 6-5, a kitchen total heat recovery fresh air machine, as shown in fig. 1 to 2-4, comprises a smoke ventilator 1, wherein the smoke ventilator 1 comprises a shell 101 at the upper part of the smoke ventilator 1, a smoke prevention cover 102 at the lower part of the smoke ventilator 1, a dirty air direct exhaust outlet 1010, a combustion furnace (not shown in the drawings) is arranged below the smoke prevention cover 102, a dirty air direct exhaust channel 103 and a high-temperature heat exchanger channel 104 are arranged in the shell 101 of the smoke ventilator 1, and the functions of the single channel and the double channels are increased by 2 times; the bottom of the dirty air straight-line channel 103 is provided with a dirty air inlet 105, and a dirty air blower 106 is arranged above the dirty air inlet 105;
the smoke exhaust ventilator 1 further comprises a right dirty air outlet 1011, a rear fresh air inlet 1012 and a front fresh air outlet 101; the kitchen total heat recovery fresh air machine also comprises a high-temperature heat exchanger 2, a low-temperature heat exchanger 3, a fresh air distribution pipe 4, a fresh air distribution box 5 and a fresh air inlet pipe 6; the fresh air rear air inlet 1012 is connected with a fresh air inlet pipe 6; the high-temperature heat exchanger 2 is arranged in the high-temperature heat exchanger channel 104 of the smoke exhaust ventilator 1 and above the sewage fan 106, one side of the high-temperature heat exchanger 2 is provided with a fresh air front air outlet 1013, one side of the low-temperature heat exchanger 3 is provided with a fresh air low air inlet 3010, and a fresh air connecting pipe 7 is arranged between the fresh air front air outlet 1013 and the fresh air low air inlet 3010; the other side of the low-temperature heat exchanger 3 is provided with a fresh air low-temperature air outlet 3011, the fresh air low-temperature air outlet 3011 is connected with a fresh air distribution pipe 4, the fresh air distribution pipe 4 is connected with a fresh air distribution box 5, and the fresh air distribution box 5 supplies oxygen to a combustion furnace and a chef; the fresh air distribution box 5 comprises a fresh air left outlet 501, a fresh air right outlet 502 and 2 air deflectors 503, wherein the fresh air left outlet 501 and the fresh air right outlet 502 are respectively arranged on two sides of the lower part of the fresh air distribution box 5; as shown in fig. 6-1 and 6-3, 2 air deflectors 503 are respectively arranged at the inner sides of a left fresh air outlet 501 and a right fresh air outlet 502, the included angle alpha between the air deflectors 503 and the outer side in the horizontal direction is 60-90 degrees, the fresh air outlet angle is controlled between 60-90 degrees, the inner side of an upper fresh air outlet 205 and the outer side of a dirty air inlet 105 are dead zones of air flow, short circuits of fresh air and dirty air are blocked, the situation that the fresh air surrounds the dirty air is ensured, and the fresh air can directly reach the lower part of a cooking bench; when the cooking bench burns, the lower part of the cooking bench has an induced draft phenomenon, fresh air enters the cooking bench from the lower part to support combustion, the hot air of the polluted air formed by burning has an automatic rising thrust, a short circuit is formed with the pulling force generated by the polluted air blower 106, the peripheral fresh air does not occupy the space in the polluted air, the fresh air can prevent the external benefit of the polluted air, the fresh air can directly blow to the vicinity of the cooking bench, the oxygen supply channel of the cooking bench with suction is used for sucking the oxygen supply of the cooking bench to support combustion, the bidirectional flow design of introducing the fresh air and discharging the polluted air in the kitchen is realized, and the air pressure balance in the kitchen can be realized.
As shown in fig. 3-1 to 3-5, an oil stain collecting box 107 is arranged at the inner upper part of the smoke preventing cover 102 below the dirty fan 106; a direct-discharge back-discharge change-over switch 108 is arranged in the shell 101 and above the sewage fan 106, the direct-discharge back-discharge change-over switch 108 is positioned below the sewage air direct-discharge channel 103 and the high-temperature heat exchanger channel 104, the flow direction of the oil smoke is controlled by adopting the direct-discharge back-discharge change-over switch 108, and the sewage air direct-discharge channel 103 and the high-temperature heat exchanger channel 104 realize the functions of discharging sewage air and recycling sewage energy at different time periods; because the service time after conversion is longer, the conversion is generally only carried out for 2 times in one year, and the oil fume can flow to the oil fume collecting box 107 at the lower part along the sewage fan 106 after the liquid oil is separated out from the high-temperature heat exchanger 2, so that the secondary pollution caused by oil fume purification is solved.
As shown in fig. 3-1 and 3-3, the dirty fan 106 is a backward inclined centrifugal fan, so that axial air supply can be realized, and the installation space of the fan is reduced; the front surface of the smoke exhaust ventilator 1 provided with the high-temperature heat exchanger 2 is provided with an exchanger port 109 which can take out the high-temperature heat exchanger 2, and when more smoke adheres to the heat exchange tubes, the smoke exhaust ventilator is convenient to take out and clean; the in-line back-row switch 108 is in a manual control mode; xia Chunqiu is provided with a direct sewage wind discharge channel 103 and a high-temperature heat exchanger channel 104 which are closed, so that the direct sewage wind discharge and fresh air cooling functions can be realized; the direct exhaust channel 103 of the polluted air is closed in winter, the high-temperature heat exchanger channel 104 is opened, the functions of purifying the polluted air and recovering energy can be realized, and meanwhile, the functions of exhausting the polluted air and introducing fresh air are realized.
As shown in fig. 4-1 to 4-5, the high temperature heat exchanger 2 includes a left end plate 201, a right end plate 202, and 91 heat exchange tubes a 203, the heat exchange tubes a 203 being disposed laterally between the left end plate 201 and the right end plate 202; the inner cavity of the left end plate 201 is a left fresh air cavity 207, the inner cavity of the right end plate 202 is a right fresh air cavity 208, a fresh air channel is arranged in the heat exchange tube A203, fresh air passes through the heat exchange tube A203, and two ends of the fresh air channel are respectively communicated with the left fresh air cavity 207 and the right fresh air cavity 208; a middle partition plate 206 is arranged in the middle of the right fresh air cavity 208, one side of the middle partition plate 206 is provided with a fresh air inlet 204, the other side of the middle partition plate 206 is provided with a fresh air outlet 205, fresh air can enter the right fresh air cavity 208 from the fresh air inlet 204, enter the left fresh air cavity 207 through a fresh air channel corresponding to the right fresh air cavity 208, enter the right fresh air cavity 208 from the left fresh air cavity 207 through a fresh air channel corresponding to the right fresh air cavity 208, and finally come out from the fresh air outlet 205; a dirty air channel between the shell 101 of the smoke exhaust ventilator 1 and the heat exchange tube A203 forms a dirty air cavity A, dirty air passes through the dirty air cavity A, and dirty air energy flows from the lower part of the heat exchange tube A203 to the upper part of the heat exchange tube A203 along the dirty air cavity A; the outer diameter of the heat exchange tube A203 is 9.53mm, and the length of the heat exchange tube A203 is 198mm.
As shown in FIGS. 4-1 to 4-5, the 91 heat exchange tubes A203 have an inner ventilation area of 0.0058 square meter, a heat transfer area of 0.54 square meter, a wind speed design of 4.1m/s in the tubes, and a wind volume of 86.4m 3 And/h, which is equivalent to the air quantity of the smoke exhaust ventilator 1; the heat exchange tube A203 adopts drawn stainless steel tubes, and the heat exchange tube A203 adopts sealing with the left end plate 201 and the right end plate 202Welding connection; the heat exchange tubes A203 are arranged in staggered mode in the flowing direction of the sewage, so that the sewage can exchange energy with the whole surface of the heat exchange tubes A203 in a channel in a contact manner; the dirty air passes through the decreasing temperature difference area of the heat exchange pipe A203 to exchange heat rapidly, so that all phase-change oil liquid of the oil smoke is dripped into the oil dirt collecting box 107 at the lower part, and the oil smoke removing function is realized; the high-temperature heat exchanger 2 is provided with a sealing door a 209, and the high-temperature heat exchanger 2 can be taken out by opening the sealing door a, so that the high-temperature heat exchanger channel 104 is cleaned.
As shown in fig. 5-1 and 5-2, the cryogenic heat exchanger 3 further includes a tank 301, a low-wind-level air inlet 302, and a low-wind-level air outlet 303; a dirty air connecting pipe 8 is arranged between the dirty air right air outlet 1011 and the dirty air low air inlet 302; a fresh air fan mounting plate 304 is arranged in the box 301, and the fresh air fan mounting plate 304 divides the inner cavity of the box 301 into a left heat transfer chamber 306 and a right fresh air outlet chamber 307; the two sides of the heat transfer chamber 306 are respectively provided with a left baffle plate and a right baffle plate, 182 heat exchange tubes B305 are transversely arranged between the left baffle plate and the right baffle plate and in the heat transfer chamber 306, and the two ends of each heat exchange tube B305 are respectively communicated with the inner cavities of the left baffle plate and the right baffle plate; the outer diameter of the heat exchange tube B305 is 9.53mm, and the length is 255mm; in the heat transfer chamber 306, a dirty air cavity B is formed in the space between the heat exchange tubes B305, dirty air passes through the dirty air cavity B, and dirty air energy flows from the upper part of the heat exchange tubes B305 to the lower part of the heat exchange tubes B305 along the dirty air cavity B; a fresh air fan 308 is installed in the fresh air outlet cavity 307, and the fresh air fan 308 is fixedly arranged on the fresh air fan mounting plate 304; the fresh air low air inlet 3010 is arranged on the left side of the left partition plate and communicated with the inner cavity of the left partition plate, and the fresh air low air outlet 3011 is arranged on the right side of the box 301 and communicated with the fresh air outlet cavity 307; the low-wind-pollution air inlet 302 is arranged on the upper side of the box 301 and communicated with the upper part of the heat transfer chamber 306, and the low-wind-pollution air outlet 303 is arranged on the lower side of the box 301 and communicated with the lower part of the heat transfer chamber 306.
As shown in FIGS. 5-1 and 5-2, the 182 heat exchange tubes B305 have an inner ventilation area of 0.0116 square meter, a heat transfer area of 1.31 square meter and an air volume of 86.4m 3 The wind speed in the tube is 2.07m/s, the wind speed is lower, and the heat transfer is more sufficient; the heat exchange tube B305 is a drawn stainless steel tube;
the low-temperature heat exchanger 3 is a subsequent energy recovery device of the high-temperature heat exchanger 2, the fresh air fan 308 adopts a backward inclined centrifugal fan, and the damping flow of the whole fresh air is an air suction flow; the fresh air flows in the heat exchange tube B305, the dirty air flows outside the heat exchange tube B305, in order to not adhere to the concentrated oil sludge on the heat exchange tube, the fresh air and the dirty air adopt 90-degree cross decreasing type heat transfer, the temperature of the dirty air gradually decreases from top to bottom, the temperature of the fresh air gradually increases from left to right, the temperature of the fresh air and the temperature of the dirty air are gradually close, the residual gaseous oil in the oil smoke cannot be liquefied and concentrated continuously due to small temperature difference, and the attached oil sludge cannot be generated in the whole low-temperature heat exchanger 3 so as not to influence the heat exchange effect; the case 301 of the low-temperature heat exchanger 3 is reserved with a heat exchanger taking-out passage, the front surface of the case 301 is provided with a sealing door B309, and if necessary, the front surface sealing door B309 can be opened, and the low-temperature heat exchanger 3 is taken out from the range hood 1 for cleaning and then mounted.
As shown in fig. 6-1 to 6-5, the fresh air distribution box 5 further includes a fresh air left air inlet 504, a fresh air right air inlet 505, and a pull box 506; the fresh air left air inlet 504 and the fresh air right air inlet 505 are respectively arranged above the front part of the fresh air distribution box 5, and the pull box 506 is arranged at the front end part of the fresh air distribution box 5; the pull box 506 comprises a fresh air front outlet 507 arranged below the pull box, a fresh air left air outlet window 508 and a fresh air right air outlet window 509 arranged at the front end of the pull box; the fresh air distribution box 5 is a key device for distributing fresh air, and the distribution box distributes introduced fresh air to an air curtain fresh air position and an oxygen supply position for chefs; when the included angle alpha between the air deflector 503 and the horizontal direction of the outer side is 75 degrees, the downward fresh air flow with 75 degrees obliquely surrounds the upward sewage flow on the outer side according to the different wind outlet speeds;
the fresh air distributing pipe 4 also comprises a distributing pipe fresh air inlet 401, a distributing pipe left outlet 402 and a distributing pipe right outlet 403; one end of a left outlet 402 of the distributing pipe and one end of a right outlet 403 of the distributing pipe are connected in parallel and then connected with a fresh air inlet 401 of the distributing pipe; the other end of the left outlet 402 of the distributing pipe is connected with a left fresh air inlet 504 of the fresh air distributing box 5, and the other end of the right outlet 403 of the distributing pipe is connected with a right fresh air inlet 505 of the fresh air distributing box 5.
As shown in fig. 1 to 6-5, the device also comprises a direct sewage discharge function, a sewage discharge-fresh air introduction function and an energy recovery and oil smoke purification function, and is divided into the following steps:
and (one) the direct sewage wind discharging function: only the dirty air straight exhaust passage 103 is opened, and the operation state is as follows: the direct-discharge back-discharge change-over switch 108 is rotated, the high-temperature heat exchanger channel 104 is closed, the dirty air direct-discharge channel 103 is opened, the dirty fan 106 is started, and the high-temperature oil smoke dirty air is directly discharged out of the room through the dirty air direct-discharge channel 103 and the dirty air direct-discharge air outlet 1010 under the drive of the dirty fan 106; the kitchen waste air is not treated and discharged immediately, and the kitchen waste air is suitable for a period of generating high-temperature oil smoke in a kitchen in spring and autumn, and the environment temperature in spring and autumn is not low, the temperature inside and outside the kitchen is almost equal, the oil smoke cannot be condensed into oil liquid in a phase change manner in the whole discharging process, the environment is not polluted, and a window can be opened in the period to supply fresh air to the kitchen;
and (II) the functions of exhausting the polluted air and introducing fresh air: the direct exhaust channel 103 of the polluted air is opened, and meanwhile, the fresh air channel is opened, and the operation is as follows: the direct-discharge back-discharge change-over switch 108 is rotated, the high-temperature heat exchanger channel 104 is closed, the dirty air direct-discharge channel 103 is opened, the dirty fan 106 is started, and the high-temperature oil smoke dirty air is directly discharged out of the room through the dirty air direct-discharge channel 103 and the dirty air direct-discharge air outlet 1010 under the drive of the dirty fan 106; simultaneously, a fresh air blower 308 is opened, outdoor fresh air enters from a fresh air inlet 204 and enters a heat exchange tube A203 of a high-temperature heat exchanger 2 in a smoke exhaust ventilator 1, the fresh air after heat absorption is discharged from a fresh air front air outlet 1013 to a fresh air connecting tube 7, the fresh air connecting tube 7 discharges the fresh air from a fresh air low air inlet 3010 to a heat exchange tube B305 of a low-temperature heat exchanger 3 and then is sent to a fresh air distribution tube 4 from the fresh air low air outlet 3011, the fresh air is distributed to a fresh air right air inlet 505 and a left air inlet and enters a fresh air distribution box 5, the fresh air distribution box 5 distributes the fresh air to a fresh air left outlet 501 with a downward opening, a fresh air right outlet 502, a fresh air left air outlet window 508 with a forward window and a fresh air right air outlet window 509, and the dirty air is discharged in a closed mode, and oxygen is supplied to a combustion furnace and chefs; the function is used in a summer high-temperature period, and the kitchen is required to discharge high temperature of indoor sewage wind due to too high heating temperature of the kitchen, and fresh air is also required to be introduced to reduce high temperature and oxygen supply in the kitchen. Because the indoor temperature is high, the high-temperature energy of the polluted air is not required to be recovered to heat the fresh air;
The energy is recovered and the oil smoke is purified, and the oil smoke purifying device is used in low-temperature period in winter, the temperature in a kitchen is low, high-temperature energy in the polluted air is required to be recovered, and high Wen Xinfeng oxygen supply is also required to be adopted;
(1) Fresh air introduction, heat exchange and oxygen supply functions: the high temperature heat exchanger passage 104 is opened and the operation state is as follows: turning the direct exhaust back discharge change-over switch 108, opening the high-temperature heat exchanger channel 104, closing the dirty air direct exhaust channel 103, opening the fresh air fan 308, enabling fresh air to enter the fresh air rear air inlet 1012 through the fresh air inlet pipe 6, enabling fresh air to enter the heat exchange pipe A203 of the high-temperature heat exchanger 2 from the fresh air rear air inlet 1012, performing heat exchange with high-temperature oil smoke dirty air in the dirty air cavity, simultaneously enabling oil smoke gas to be cooled and changed into oil, and enabling the oil to flow to the oil dirt collecting box 107 at the lower part; after the fresh air recovers the energy of the polluted air, the polluted air is discharged from a fresh air front air outlet 1013 to a fresh air connecting pipe 7, the fresh air connecting pipe 7 discharges the fresh air with the recovered energy from a fresh air low air inlet 3010 to a heat exchange pipe B305 of the low temperature heat exchanger 3, and the fresh air is continuously subjected to heat exchange with the purified oil-free polluted air which enters a polluted air cavity of the low temperature evocator, passes through a fresh air fan 308 after absorbing the energy of the polluted air, is sent to a fresh air distribution pipe 4 from a fresh air low air outlet 3011, and distributes the fresh air to a fresh air right air inlet 505 and a fresh air left air inlet 504; the energy-absorbed fresh air is distributed to a fresh air left outlet 501, a fresh air right outlet 502, a fresh air front outlet 1013, a fresh air left air outlet window 508 and a fresh air right air outlet window 509 with front windows facing downwards in a fresh air distribution box 5, so that the beneficial outlet of the polluted air is closed, and oxygen is supplied to a combustion furnace and chefs;
(2) The dirty wind is discharged out of the kitchen after heat exchange: the high temperature heat exchanger passage 104 is opened and the operation state is as follows: turning a direct exhaust back-discharge change-over switch 108, opening a high-temperature heat exchanger channel 104, closing a dirty air direct exhaust channel 103, opening a dirty air blower 106, enabling dirty air to enter the dirty air blower 106 from a dirty air inlet 105, enabling the dirty air blower 106 to enter a dirty air cavity A of a high-temperature heat exchanger 2 in a back-exhaust channel of a smoke exhaust ventilator 1, enabling the dirty air to emit heat to fresh air in a fresh air channel, enabling oil fume in the dirty air cavity to change into oil after being cooled, enabling the oil fume to be attached to a heat exchange tube, and enabling the oil fume to trickle into an oil stain collecting box 107 at the dirty air inlet 105; the purified and cooled waste air is discharged out of the smoke exhaust ventilator 1 through the waste air right air outlet 1011, enters the waste air connecting pipe 8, is discharged into the waste air cavity B of the low-temperature heat exchanger 3 from the waste air low-temperature air inlet 302, and transfers the residual heat to the fresh air in the heat exchange pipe of the low-temperature heat exchanger 3 in the waste air cavity B, wherein the waste air has no oil smoke, so that only total heat exchange exists, the temperature of the waste air at the outlet is almost equal to the temperature of the heated fresh air, and finally is discharged to the waste air outlet pipe from the waste air low-temperature air outlet 303 and is discharged out of a kitchen; after heat exchange is carried out on the sewage wind in the high-temperature heat exchanger 2 and the low-temperature heat exchanger 3, the high-temperature oil smoke can be reduced in size, meanwhile, the low-temperature fresh air can be heated up in an increasing mode, the oil smoke can be purified and discharged in a decreasing mode, and the tail end of the high-temperature heat exchanger 2 can be completely purified and cleaned with the oil smoke in the sewage wind.
Example 2:
as shown in fig. 7-1 to 7-2, a three-way pipe (not shown in the drawings) is arranged in the fresh air inlet pipe 6, the inlet end of the three-way pipe is directly connected with the outside of the kitchen, and the first outlet of the three-way pipe is connected with the fresh air rear air inlet 1012; the second outlet of the three-way pipe is connected with a fresh air through inlet 3012 at the upper part of a fresh air outlet cavity 307 of the low-temperature heat exchanger 3 through an air valve (not shown), fresh air is directly led to a fresh air fan 308, is sent to a fresh air distribution pipe 4 from a fresh air low-temperature air outlet 3011, is distributed to a fresh air left air inlet 504 and a fresh air right air inlet 505, and is distributed to a fresh air left outlet 501, a fresh air right outlet 502, a fresh air left air outlet window 508 and a fresh air right air outlet window 509 with downward openings, so that the discharge of dirty air is closed, and oxygen is supplied to a combustion furnace and chefs; fresh air is mainly discharged from the second outlet of the three-way pipe and is directly communicated into the kitchen, and the first outlet channel has larger wind resistance due to the fact that the fresh air needs to pass through the two heat exchangers, and little fresh air enters the kitchen from the first outlet channel.
Example 1 was followed.
The above examples are only preferred embodiments of the present invention, and common variations and substitutions by those skilled in the art within the scope of the technical solution of the present invention should be included in the scope of the present invention.
Claims (8)
1. The kitchen total heat recovery fresh air machine comprises a smoke ventilator, wherein the smoke ventilator comprises a shell at the upper part of the smoke ventilator, a smoke prevention cover at the lower part of the smoke ventilator, and a dirty air direct exhaust port, a combustion furnace is arranged below the smoke prevention cover, a dirty air direct exhaust channel and a high-temperature heat exchanger channel are arranged in the shell of the smoke ventilator, and the functions of the single channel and the double channels are increased by 2 times; the bottom of the dirty air direct-discharge channel is provided with a dirty air inlet, and a dirty air blower is arranged above the dirty air inlet; the method is characterized in that:
the smoke exhaust ventilator further comprises a right dirty air outlet, a rear fresh air inlet and a front fresh air outlet; the kitchen total heat fresh air machine also comprises a high-temperature heat exchanger, a low-temperature heat exchanger, a fresh air distribution pipe, a fresh air distribution box and a fresh air inlet pipe; the fresh air rear air inlet is connected with a fresh air inlet pipe; the high-temperature heat exchanger is arranged in a high-temperature heat exchanger channel of the smoke exhaust ventilator and above the sewage fan, one side of the high-temperature heat exchanger is provided with a fresh air front air outlet, one side of the low-temperature heat exchanger is provided with a fresh air low air inlet, and a fresh air connecting pipe is arranged between the fresh air front air outlet and the fresh air low air inlet; the other side of the low-temperature heat exchanger is provided with a fresh air low-temperature air outlet which is connected with a fresh air distribution pipe, the fresh air distribution pipe is connected with a fresh air distribution box, and the fresh air distribution box supplies oxygen to the combustion furnace and chefs; the fresh air distribution box comprises a fresh air left outlet, a fresh air right outlet and 2 air deflectors, and the fresh air left outlet and the fresh air right outlet are respectively arranged at two sides of the lower part of the fresh air distribution box; the 2 air deflectors are respectively arranged at the inner sides of the left fresh air outlet and the right fresh air outlet, and the included angle between the air deflectors and the horizontal direction of the outer side is 60-90 degrees;
An oil stain collecting box is arranged at the lower part of the sewage fan and at the upper part in the smoke prevention cover; a direct-discharge back-discharge change-over switch is arranged in the shell and above the sewage fan, and is positioned below the sewage air direct-discharge channel and the high-temperature heat exchanger channel, the flow direction of the oil smoke is controlled by the direct-discharge back-discharge change-over switch, and the sewage air direct-discharge channel and the high-temperature heat exchanger channel realize the functions of discharging sewage air and recycling sewage energy in different periods;
the low-temperature heat exchanger further comprises a box body, a low-air-pollution air inlet and a low-air-pollution air outlet; a sewage air connecting pipe is arranged between the sewage air right air outlet and the sewage air low air inlet; a fresh air fan mounting plate is arranged in the box body, and divides the inner cavity of the box body into a left heat transfer chamber and a right fresh air outlet chamber; the two sides of the heat transfer chamber are respectively provided with a left baffle plate and a right baffle plate, more than 40 heat exchange tubes B are transversely arranged between the left baffle plate and the right baffle plate and in the heat transfer chamber, and two ends of each heat exchange tube B are respectively communicated with the inner cavities of the left baffle plate and the inner cavities of the right baffle plate; the outer diameter of the heat exchange tube B is 7-50 mm, and the length is 0.1-10 m; in the heat transfer chamber, a dirty air cavity B is formed in the space between the heat exchange pipes B, dirty air passes through the dirty air cavity B, and dirty air energy flows from the upper part of the heat exchange pipes B to the lower part of the heat exchange pipes B along the dirty air cavity B; a fresh air fan is arranged in the fresh air outlet cavity, and the fresh air fan is fixedly arranged on a fresh air fan mounting plate; the fresh air low air inlet is arranged on the left side of the left partition plate and communicated with the inner cavity of the left partition plate, and the fresh air low air outlet is arranged on the right side of the box body and communicated with the fresh air outlet cavity; the low-wind-pollution air inlet is arranged on the upper side of the box body and communicated with the upper part of the heat transfer chamber, and the low-wind-pollution air outlet is arranged on the lower side of the box body and communicated with the lower part of the heat transfer chamber.
2. A kitchen total heat recovery fresh air machine according to claim 1, wherein: the dirty fan is a backward inclined centrifugal fan; the front of the smoke exhaust ventilator is provided with an exchanger port which can take out the high-temperature heat exchanger.
3. A kitchen total heat recovery fresh air machine according to claim 1, wherein: the high-temperature heat exchanger comprises a left end plate, a right end plate and more than 20 heat exchange tubes A, wherein the heat exchange tubes A are transversely arranged between the left end plate and the right end plate; the inner cavity of the left end plate is a left fresh air cavity, the inner cavity of the right end plate is a right fresh air cavity, a fresh air channel is arranged in the heat exchange tube A, fresh air passes through the heat exchange tube A, and two ends of the fresh air channel are respectively communicated with the left fresh air cavity and the right fresh air cavity; the middle part of the right fresh air cavity is provided with a middle partition plate, one side of the middle partition plate is provided with a fresh air inlet, and the other side of the middle partition plate is provided with a fresh air outlet; a dirty air channel between the shell of the smoke exhaust ventilator and the heat exchange tube A forms a dirty air cavity A; the outer diameter of the heat exchange tube A is 7-50 mm, and the length of the heat exchange tube A is 0.1-10 m.
4. A kitchen total heat recovery fresh air machine according to claim 3, wherein: the high-temperature heat exchanger comprises 91 heat exchange pipes A, the outer diameter of each fresh air pipe A is 9.53mm, the length of each fresh air pipe A is 198mm, the internal ventilation area is 0.0058 square meter, the heat transfer area is 0.54 square meter, the wind speed design is 4.1m/s in the pipes, and the air quantity is 86.4m 3 And/h, the air quantity is equivalent to that of the smoke exhaust ventilator; the heat exchange tube A is drawn stainless steel tubes, aluminum tubes, copper tubes or iron tubes, and is connected with the left end plate and the right end plate in a sealing welding way; the heat exchange tubes A are arranged in staggered mode in the flowing direction of the sewage, so that the sewage can exchange energy with the whole surface of the heat exchange tubes A in a channel in a contact manner; the sewage wind passes through the decreasing temperature difference area of the heat exchange pipe A to exchange heat rapidly, and the oil fume is totally phase-changed into oil liquid and is dripped into the oil stain collecting box at the lower part; the high temperature heat exchanger is provided with a sealing door a.
5. A kitchen total heat recovery fresh air machine according to claim 1, wherein: 182 heat exchange tubes B are transversely arranged on the low-temperature heat exchanger, the outer diameter is 9.53mm, the length is 255mm, the inner ventilation area is 0.0116 square meter, the heat transfer area is 1.31 square meter, and the air quantity is 86.4m 3 The wind speed in the tube is 2.07m/s, the wind speed is lower, and the heat transfer is more sufficient; the heat exchange tube B is drawn stainless steel tube, aluminum tube, copper tube or stainless iron tube;
the low-temperature heat exchanger is a subsequent energy recovery device of the high-temperature heat exchanger, the fresh air fan adopts a backward inclined centrifugal fan, and the damping flow of the whole fresh air is an air suction flow; the fresh air flows in the heat exchange tube B, the dirty air flows outside the heat exchange tube B, so that concentrated oil sludge is not attached to the heat exchange tube, the fresh air and the dirty air adopt 90-degree cross decreasing type heat transfer, the temperature of the dirty air is gradually reduced from top to bottom, the fresh air is gradually increased from left to right, and the temperature of the fresh air and the temperature of the dirty air are gradually close; the box body of the low-temperature heat exchanger is reserved with a heat exchanger taking-out channel, and the front surface of the box body is provided with a sealing door B.
6. A kitchen total heat recovery fresh air machine according to claim 1, wherein: the fresh air distribution box further comprises a fresh air left air inlet, a fresh air right air inlet and a pull box; the fresh air left air inlet and the fresh air right air inlet are respectively arranged above the front part of the fresh air distribution box, and the pull box is arranged at the front end part of the fresh air distribution box; the box comprises a fresh air front outlet arranged below the box, and a fresh air left air outlet window and a fresh air right air outlet window which are arranged at the front end of the box; the fresh air distribution box is a key device for distributing fresh air outlet, and the distribution box distributes introduced fresh air to an air curtain fresh air position and an oxygen supply position for chefs; the included angle between the air deflector and the horizontal direction of the outer side is 75 degrees, and the upward sewage flow is surrounded by the downward fresh air flow with 75 degrees on the outer side according to different wind outlet speeds;
the fresh air distributing pipe further comprises a distributing pipe fresh air inlet, a distributing pipe left outlet and a distributing pipe right outlet; one end of a left outlet of the distributing pipe and one end of a right outlet of the distributing pipe are connected in parallel and then connected with a fresh air inlet of the distributing pipe; the other end of the left outlet of the distributing pipe is connected with a left fresh air inlet of the fresh air distributing box, and the other end of the right outlet of the distributing pipe is connected with a right fresh air inlet of the fresh air distributing box.
7. A kitchen total heat recovery fresh air machine according to any one of claims 1 to 6, wherein: a three-way pipe is arranged in the fresh air inlet pipe, the inlet end of the three-way pipe is directly connected with the outside of the kitchen, and the first outlet of the three-way pipe is connected with the fresh air rear air inlet; the second outlet of the three-way pipe is connected with a fresh air through air inlet at the upper part of a fresh air outlet cavity of the low-temperature heat exchanger through an air valve, fresh air is directly led to the fresh air fan, the fresh air is sent from a low fresh air outlet to a fresh air distribution pipe, the fresh air is distributed to a left fresh air inlet and a right fresh air inlet, and the fresh air distribution box is distributed to a left fresh air outlet, a right fresh air outlet, a left fresh air outlet window and a right fresh air outlet window with downward opening, and a front window.
8. A kitchen total heat recovery fresh air machine according to claim 1, wherein: the device also comprises a direct sewage wind discharging function, a sewage wind discharging-fresh air introducing function and an energy recovering and oil smoke purifying function, and is divided into the following steps:
and (one) the direct sewage wind discharging function: only the direct exhaust channel of the polluted air is opened, and the operation state is as follows: the direct-discharge back-discharge change-over switch is rotated, the high-temperature heat exchanger channel is closed, the dirty air direct-discharge channel is opened, the dirty fan is started, and the high-temperature oil smoke dirty air is directly discharged out of the room through the dirty air direct-discharge channel and the dirty air direct-discharge air outlet under the drive of the dirty fan; the kitchen waste air is not treated and discharged immediately, and the kitchen waste air is suitable for a period of generating high-temperature oil smoke in a kitchen in spring and autumn, and the environment temperature in spring and autumn is not low, the temperature inside and outside the kitchen is almost equal, the oil smoke cannot be condensed into oil liquid in a phase change manner in the whole discharging process, the environment is not polluted, and a window can be opened in the period to supply fresh air to the kitchen;
And (II) the functions of exhausting the polluted air and introducing fresh air: and (3) opening a direct exhaust channel of the polluted air, and simultaneously opening a fresh air channel, wherein the operation is as follows: the direct-discharge back-discharge change-over switch is rotated, the high-temperature heat exchanger channel is closed, the dirty air direct-discharge channel is opened, the dirty fan is started, and the high-temperature oil smoke dirty air is directly discharged out of the room through the dirty air direct-discharge channel and the dirty air direct-discharge air outlet under the drive of the dirty fan; simultaneously, a fresh air blower is opened, outdoor fresh air enters from a fresh air inlet and enters a heat exchange tube A of a high-temperature heat exchanger in a smoke exhaust ventilator, endothermic fresh air is discharged from a fresh air front air outlet to a fresh air connecting tube, the fresh air connecting tube discharges fresh air from a fresh air low air inlet to a heat exchange tube B of the low-temperature heat exchanger and then sends the fresh air to a fresh air distribution tube from the fresh air low air outlet, the fresh air is distributed to a fresh air right air inlet and a fresh air left air inlet and enters a fresh air distribution box, the fresh air distribution box distributes the fresh air to a fresh air left outlet with a downward opening, a fresh air right outlet, a fresh air left air outlet window with a forward window and a fresh air right air outlet window, and the fresh air connecting tube is used for discharging the closed sewage air and simultaneously supplying oxygen to a combustion furnace and chefs; the function is used in a high-temperature period in summer, the kitchen is heated at too high temperature due to the fact that not only is the high temperature of indoor dirty air discharged, but also fresh air is introduced to reduce the high temperature and oxygen supply in the kitchen, and the high-temperature energy of the dirty air is not required to be recovered to heat the fresh air due to the high indoor temperature;
The energy is recovered and the oil smoke is purified, and the oil smoke purifying device is used in low-temperature period in winter, the temperature in a kitchen is low, high-temperature energy in the polluted air is required to be recovered, and high Wen Xinfeng oxygen supply is also required to be adopted;
(1) Fresh air introduction, heat exchange and oxygen supply functions: opening a high-temperature heat exchanger channel, wherein the operation state is as follows: turning a direct-discharge back-discharge change-over switch, opening a high-temperature heat exchanger channel, closing a dirty air direct-discharge channel, opening a fresh air fan, enabling fresh air to enter a fresh air rear air inlet through a fresh air inlet pipe, enabling fresh air to enter a heat exchange pipe A of the high-temperature heat exchanger from the fresh air rear air inlet, performing heat exchange with high-temperature oil smoke and dirty air in a dirty air cavity, and simultaneously enabling oil smoke gas to be cooled and changed into oil, and enabling the oil to flow to an oil dirt collecting box at the lower part; after the fresh air recovers the energy of the polluted air, the polluted air is discharged from a fresh air front air outlet to a fresh air connecting pipe, the fresh air connecting pipe discharges the fresh air with the recovered energy from a fresh air low air inlet to a heat exchange pipe B of a low-temperature heat exchanger, the fresh air connecting pipe continuously exchanges heat with the purified oil-free polluted air which enters a polluted air cavity of a low-temperature evolutionary device, passes through a fresh air machine after absorbing the energy of the polluted air, is sent to a fresh air distribution pipe from the fresh air low air outlet, and distributes the fresh air to a fresh air right air inlet and a fresh air left air inlet; the energy-absorbed fresh air is distributed to a fresh air left outlet, a fresh air right outlet, a fresh air front air outlet, a fresh air left air outlet window and a fresh air right air outlet window with front windows facing downwards in a fresh air distribution box, the beneficial outlet of the dirty air is closed, and oxygen is supplied to a combustion furnace and chefs;
(2) The dirty wind is discharged out of the kitchen after heat exchange: opening a high-temperature heat exchanger channel, wherein the operation state is as follows: the direct-discharge back-discharge change-over switch is rotated, the high-temperature heat exchanger channel is opened, the direct-discharge channel of the dirty air is closed, the dirty air blower is opened, the dirty air enters the dirty air blower from the dirty air inlet, passes through the dirty air blower and enters the dirty air cavity A of the high-temperature heat exchanger in the smoke exhaust ventilator back-discharge channel, the dirty air releases heat to the fresh air in the fresh air channel, the oil smoke in the dirty air cavity is cooled and then changes into oil liquid, the oil liquid is attached to the heat exchange tube, and the oil liquid trickles to the oil dirt collecting box at the dirty air inlet; the purified and cooled waste wind is discharged out of the smoke exhaust ventilator through a waste wind right air outlet, enters a waste wind connecting pipe, is discharged into a waste wind cavity B of the low-temperature heat exchanger from a waste wind low air inlet, and transfers residual heat to fresh air in a heat exchange pipe of the low-temperature heat exchanger in the waste wind cavity B, wherein the waste wind has no oil smoke, so that only total heat exchange is performed, the temperature of the waste wind at an outlet is almost equal to that of the heated fresh air, and finally is discharged into a waste wind outlet pipe from the waste wind low air outlet to be discharged out of a kitchen; after heat exchange is carried out on the sewage wind in the high-temperature heat exchanger and the low-temperature heat exchanger, the high-temperature oil smoke can be reduced in size, meanwhile, the low-temperature fresh air can be heated up in an increasing mode, the oil smoke can be purified and discharged in a decreasing mode, and the tail end of the high-temperature heat exchanger can be completely purified and cleaned with the oil smoke in the sewage wind.
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| CN111174258A (en) * | 2020-02-19 | 2020-05-19 | 浙江友邦集成吊顶股份有限公司 | Fresh air ventilation device for kitchen and control method thereof |
| CN113834108B (en) * | 2021-11-05 | 2024-02-20 | 吉林建筑大学 | Device with heat recovery and high-efficient purification |
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