CN2319716Y

CN2319716Y - Household internally circulating cooker hood

Info

Publication number: CN2319716Y
Application number: CN 97243234
Authority: CN
Inventors: 张龙
Original assignee: Nanjing University of Science and Technology
Current assignee: Nanjing University of Science and Technology
Priority date: 1997-12-19
Filing date: 1997-12-19
Publication date: 1999-05-19
Anticipated expiration: 2007-12-19

Abstract

The utility model discloses a household internally circulating cooker hood, characterized in that a water spray system and a water circulating system are added below an air pumping system of the existing cooker hood. A secondary purifying system is arranged above the air pumping system. Water with a cleaning agent with certain concentration is utilized for treating fume airflow and cleaning an air pumping worm wheel. The utilization is controlled by a two-stage switch according to requirements. Thus, the fume airflow can be purified for the second time. Then, the water is discharged indoors. Thus, the internal circulating airflow of the cooker hood is formed. An air pumping effect is enhanced. The utility model which can be widely used for common families has the advantages of compact structure, reasonable design, convenient maintenance and cleaning.

Description

Family expenses internal-circulation type range hood

The utility model relates to the family expenses fume purifier of fume, particularly a kind of family expenses internal-circulation type range hood.

At present, the range hood that in family kitchen, generally uses, mainly form by exhausting system and electric control system two parts, exhausting system is made up of two vortex flow formula impellers, two motors and spiral case, during work, the oil smoke air-flow is inhaled into from two air inlets of spiral case, and the gas outlet from the exhausting system top behind vortex flow formula impeller is discharged into outdoor.Though this range hood generally is used in nuclear family, the greatest problem that its exists is, through use after a while, the worm gear surface can attach the thick grease of one deck, and it is also very difficult to clean trouble, also can influence the exhausting smoke discharging effect.Documents: British Patent Serial No.2105841 " Grease Exfxaction Ventilator " once disclosed a kind of oil smoke that is mainly used in hotel and kitchen, restaurant and had handled tapping equipment, it is made up of exhausting system, water injection system and control system three parts, exhausting system is made of the centrifugal blower more than four, its air inlet is connected with water injection system, water injection system is positioned at exhausting system below, is made of nozzle, water fender and the air intake vent of several arrangements.The nozzle of arranging forms the cascade of horizontal direction when work, the oil smoke air-flow that makes suction is when passing cascade, soot particles is separated because of water impact, and with cascade in the bigger particulate group of cleaning agent formation adhered to one another, these particulate groups enter exhausting system again with air-flow, in centrifugal blower,, the oil smoke air-flow is purified with flow separation.The control system of this device comprises electrical control, water pump circulation, water tank and cleaning agent etc., the water of nozzle ejection flows into water tank recirculation by return line and uses, this device volume is huge, install complicated, it is big to take up space, and cost an arm and a leg, can only be applicable to the kitchen in big hotel, restaurant, use and can't spread to average family.Above-mentioned range hood also has a common characteristic, promptly the oil smoke air-flow finally all be discharged into outdoor, can not circularly purifying.And limit owing to housing condition in China, kitchen area is less, and range hood is in mist extractor, also discharge indoor a large amount of gas outdoor, indoor as can not in time replenish required air, will make the exhausting oil removing function reduction of range hood, influence result of use.

The purpose of this utility model is on the basis of existing family expenses range hood, design a kind of in mist extractor, the oil smoke air-flow is handled, worm gear is cleaned, and the air-flow of discharging is purified the family expenses internal-circulation type range hood that makes it to recycle once more.

The purpose of this utility model is achieved through the following technical solutions, family expenses internal-circulation type range hood, it comprises exhausting system, water injection system, water circulation system and electric control system, water injection system and water circulation system are positioned at the below of exhausting system, electric control system is positioned at the housing in exhausting system the place ahead, it is characterized in that: water injection system is by water spray chamber, water fender and nozzle are formed, two air outlets of water spray chamber dock with two air inlets of spiral case in the exhausting system, fixing water fender is set in the air inlet of water spray chamber, nozzle is fixed on the inwall of water spray chamber the place ahead, the water tank of the discharge outlet water receiving circulatory system of water spray chamber; Water circulation system is made up of gas-liquid separation box, the cleaning agent tank of bringing the gas outlet into, jet pump, magnetic valve, water tank, micropump and the filter of water pump, band sewage draining exit, wherein the gas-liquid separation box of magnetic valve, jet pump, band sewage draining exit and the cleaning agent tank cleaning agent suction apparatus of construction system together; Filter is installed in the water inlet of micropump, they are fixed on the housing together, all pass through soft pipe connection between each parts of native system, its concrete annexation is as follows: the air inlet of magnetic valve is connected with the gas outlet of cleaning agent tank, the gas outlet of magnetic valve is connected with the jet pump intake with the liquid outlet of cleaning agent tank, the delivery port of jet pump communicates with the water inlet of gas-liquid separation box, the water inlet of gas-liquid separation box also is connected with the delivery port of micropump in the water tank, the delivery port of gas-liquid separation box docks with the water inlet of water pump, the gas outlet water flowing case of gas-liquid separation box, the delivery port of water pump is connected with nozzle in the water injection system, also communicates with the water inlet of jet pump nozzle simultaneously; Above exhausting system, also has a double purification system, it is made up of purifying box, flow distribution plate, water conservancy diversion bent plate, the air intake vent of purifying box bottom docks with the air outlet of exhausting system, flow distribution plate is fixed on the top of purifying box air intake vent, the water conservancy diversion bent plate is separately positioned on the flow distribution plate both sides along air inlet, the air outlet of double purification system is opened on the positive front of purifying box, in the water tank of the discharge outlet water receiving circulatory system; Electric control system comprises main power source beginning, high air quantity switch, light switch and delay circuit plate, main power switch is controlled the working power of each system of whole device, wherein delay circuit can preestablish the delay working time, it is connected with high air quantity switch in the magnetic valve of water circulation system and the electric control system respectively, and high air quantity switch is connected with the motor of exhausting system.The utility model needs before use with the water tank topped up with water in the water circulation system, its operation principle is such: after the main power source beginning is connected in the electric control system, at first, micropump is delivered to the gas-liquid separation box with the water of water tank, enter water pump through delivery port, after the water pump pressurization, give the nozzle in the water injection system again, the water of nozzle ejection forms one deck cascade below two air inlets of exhausting system, this cascade makes that soot particles is washed away with dust in the oil smoke air-flow enter exhausting system to be separated, and cleans impeller simultaneously.Water pump in the water circulation system is when water injection system supplies water, also make the part current be back to the gas-liquid separation box through jet pump, and in jet pump intake generation negative pressure, because magnetic valve is a normally open type magnetic valve, its air inlet is opened when not working, therefore, under the jet pump suction function, outside air is by cleaning agent tank air inlet, gas outlet, magnetic valve air inlet, gas outlet, sucked by jet pump, the water that flows to the jet pump water inlet mixes, again through the jet pump delivery port to the gas-liquid separation box.Because magnetic valve is in off position, just there is not cleaning agent to be sucked out substantially, therefore, be not contain cleaning agent or low concentration cleaning agent in the water of ejection this moment.When oil smoke is big, can press the high air quantity switch in the electric control system, this moment, delay circuit entered duty simultaneously, and connection magnetic valve, make magnetic valve work, air inlet is closed, this moment, jet pump was under suction function, just the liquid sucting port of cleaning agent from cleaning agent tank can be drawn into the jet pump, and in jet pump, fully mix with water, spray into the gas-liquid separation box through delivery port, at the gas-liquid separation box with after wherein water mixes again, enter the water pump pressurization, be defeated by the nozzle of water injection system again, at this moment, by the nozzle ejection is exactly the aqueous solution that contains the finite concentration cleaning agent, it can absorb pernicious gas and part soot particles in the oil smoke air-flow effectively, and simultaneously soot particles is bonded to big particulate group with the cleaning agent molecular collision, behind the suction vortex flow blower fan, from air-flow, separate under the action of the centrifugal, separated soot particles is rolled into a ball with the water behind the cleaning impeller and is flowed into water tank through water return pipeline together, and when the water in the water tank recycled once more, soot particles was to swim in water surface, and micropump is to draw water from the bottom of water tank, and, remove impurity and suspension, so the soot particles of its water tank water surface is can not be inhaled into through the filter filtration.The utility model is when work, and the working time of the addition of cleaning agent and high air quantity switch is controlled by delay circuit.The air-flow after handling for the first time by the exhausting system discharge, enter the double purification system at top again, by " γ " shape flow distribution plate air-flow is divided into two-way, water conservancy diversion bent plate along both sides is discharged to the gas outlet, air-flow is in water conservancy diversion bent plate motion process, because centrifugal action, small portion of residual soot particles and steam in the air-flow all are adsorbed in the water conservancy diversion bent plate inner layer material, the air-flow of going out is the air-flow through double purification, it be not be discharged into outdoor, but flow back to indoorly, make indoor formation circulating air, to improve the result of use of range hood.The utility model is provided with sewage draining exit for considering to clean conveniently in the gas-liquid separation box bottom of easy incrustation, can discharge sediment in the box easily, also waterbox design is become movable, can take out from the dead ahead easily, and water, cleaning process are changed in realization.

The utility model compared with prior art, its significant good effect is: 1. designed miniaturization water circulation system and water injection system, compact conformation, rationally makes the family expenses range hood realize that oil smoke handles and cleaning function automatically; 2. the automatic adding set of cleaning agent is reasonable in design, can remove oil smoke effectively and clean impeller, and can keep essentially identical detergent concentration all the time; 3. increased oil smoke air-flow double purification system, the air-flow of handling has directly been entered indoor circulation use, improved the exhausting effect of range hood, oil removal rate reaches 85%; 4. control system adopts the control mode of two-stage suction air volume, can more effectively clean impeller and rationally use cleaning agent; 5. the inspection of each system of range hood is cleaned conveniently, and is simple, and the recirculated water transmission of system is mainly finished by flexible pipe, and cost is lower, can be widely used in average family.

Concrete structure of the present utility model is provided by the following drawings and embodiment.

Fig. 1 is the utility model side overall structure schematic diagram.

Fig. 2 is the water circulation system structural representation.

Fig. 3 is the structural representation of jet pump in the water circulation system.

Fig. 4, Fig. 5, Fig. 6 are respectively front, overlooking surface and the side structure schematic diagrames of double purification system.

Fig. 7 is the fundamental diagram of electric control system.

Below in conjunction with accompanying drawing structure of the present utility model is described in further details.

Referring to Fig. 1, family expenses internal-circulation type range hood according to the utility model making, its exhausting system 1 adopts existing structure, below exhausting system 1 spiral case, water injection system 2 is set, the back lower place is provided with water circulation system 3, the top of exhausting system 1 is provided with double purification system 4, and electric control system 5 is arranged in the housing 11 in exhausting system 1 the place ahead.Water spray chamber in the water injection system is made by stainless sheet steel punching press and spot-welding technology, the top has two air outlets that can dock with the exhausting system air inlet, the bottom air inlet mouth formation groove that inwardly overturns, the employing punch forming process is finished, 9 of water fenders are welded in top in the air inlet, and greater than air-admitting surface, nozzle 10 adopts the current impinging injector, and it is fixed on the leading flank of water spray chamber 8.Water circulation system 3 is by water pump 12, the gas-liquid separation box 13 of band sewage draining exit, bring the cleaning agent tank 14 of gas outlet into, jet pump 15, magnetic valve 16, water tank 17, micropump 18 and filter 19 are formed, concrete connected mode adopts the polyethylene or the polypropylene soft pipe of 7～8mm internal diameter to finish, annexation is seen shown in Figure 2, wherein jet pump 15 is by the jet pump housing 28, jet pump nozzle 29, Sealed casing pipe 30 and nylon tube 31 are formed, referring to Fig. 3, nozzle 29 is positioned at the water inlet of the jet pump housing 28, and communicate with the jet pump intake, Sealed casing pipe 30 is fixed on the suction inlet place in the jet pump housing 28, and be convenient to be connected the connector of the three-way connection 34 that is adopted as suction inlet with other parts, nylon tube 31 is enclosed within the water outlet 12 of the jet pump housing 28, it can make the water of jet pump ejection enter gas-liquid separation box 14 smoothly, in order to be connected with other parts easily, water inlet and delivery port at jet pump also are provided with three-

way connection

32 and 33 respectively, the water inlet of three-way connection 32 is connected with water pump 12 by nipple 36, delivery port is by union elbow 35 and flexible pipe, connect the nozzle 10 in the water injection system, three-way connection 33 makes the delivery port of jet pump 15 and the delivery port of micropump 18 be communicated with gas-liquid separation box 13 respectively, and three-way connection 34 is used for the gas outlet of magnetic valve 16 and the liquid outlet of cleaning agent tank 14 is communicated with the jet pump suction inlet.Magnetic valve 16 is an air switching sol open in usual, and important technological parameters is: (1) AC220V/SOH ₂, (2) operating pressure 0～0.1MPa, the rated head of water pump 12 are 6 meters, and the most high-lift is 7.5 meters, and the capacity of water tank 17 is 3.0～3.5 kilograms.Referring to Fig. 4, Fig. 5 and Fig. 6, the air inlet (21-1) of purifying box 21 bottoms docks with the exhaust outlet of exhausting system 1, exhaust outlet (21-3) is left in the place ahead, flow distribution plate 22 adopts " γ " shape, be fixed on the top of air inlet (21-1), the water conservancy diversion bent plate 23 outer metal sheet stamping parts that adopt, internal layer adopts detailed catalogue copper mesh or stainless steel cloth, they are arranged on the flow distribution plate both sides along air inlet, the air-flow that enters is arranged to air outlet (21-3) along the water conservancy diversion bent plate, purifying box 21 bottoms also have discharge outlet (21-2), and residual oil particulate after it purifies two and water are in flexible pipe drains into water tank in the water circulation system.The operation principle of electric control system 5 is seen shown in Figure 7, and wherein high air quantity switch can make the suction air volume of exhausting system greater than 12m ³/ m ' m in addition, in the gas outlet of the cleaning agent tank 14 of water circulation system, as connecting a standby cleaning agent bottle by flexible pipe, then can realize to cleaning agent tank 14 in the process of interpolation cleaning agent automatically.

Claims

1, a kind of family expenses internal-circulation type soot blower, it comprises exhausting system [1], water injection system [2], water circulation system [3] and electric control system [5], water injection system [2] and water circulation system [3] are positioned at the below of exhausting system [1], and electric control system [5] is positioned at the housing [11] in exhausting system [1] the place ahead; It is characterized in that: (1) water injection system [2] is made up of water spray chamber [8], water fender [9] and nozzle [10], two air outlets [8-1] of water spray chamber [8] dock with two air inlets of spiral case [6] in the exhausting system, fixing deep bead [9] is set in the air inlet of water spray chamber [8], nozzle [10] is fixed on the inwall of water spray chamber [8] the place ahead, water tank in the discharge outlet water receiving circulatory system of water injection system [2];

(2) water circulation system [3] is by water pump [12], the gas-liquid separation box [13] of band sewage draining exit, bring the cleaning agent tank [14] of gas outlet into, jet pump [15], magnetic valve [16], water tank [17], micropump [18] and filter [19] are formed, its middle filtrator [19] is installed in the water inlet of micropump [18], they are fixed on the housing [11] together, all adopt soft pipe connection between each parts of system, its annexation is: the air inlet of magnetic valve [16] is connected with the gas outlet of cleaning agent tank [14], the liquid outlet of the gas outlet of magnetic valve [16] and cleaning agent tank [14] is connected with the suction inlet of jet pump [15] respectively, the delivery port of jet pump [15] is connected with the water inlet of gas-liquid separation box [13], the water inlet of gas-liquid separation box [13] also is connected with the delivery port of micropump [18] in the water tank [17], the delivery port of gas-liquid separation box [13] docks with the water inlet of water pump [12], the gas outlet water flowing case [17] of gas-liquid separation box [13] upper end, the delivery port of water pump [12] is connected with nozzle [10] in the water injection system, also communicates with the water inlet of jet pump [15] simultaneously;

(3) also has a double purification system [4] in the top of exhausting system [1], it is made up of purifying box [21], flow distribution plate [22], water conservancy diversion bent plate [23], purifying box [21] bottom has air inlet [21-1] and discharge outlet [21-2], positive front has air outlet [21-3], air inlet [21-1] docks with the air outlet of exhausting system [1], flow distribution plate [22] is fixed on the top of purifying box air inlet, water conservancy diversion bent plate [23] is separately positioned on flow distribution plate [22] both sides along air inlet, the water tank [17] in discharge outlet [21-2] the water receiving circulatory system;

(4) increased a high air quantity switch [25] and delay circuit [27] in electric control system, high air quantity switch [25] connects motor in the exhausting system [7] and delay circuit [27] respectively, the magnetic valve [16] of delay circuit [27] the water receiving circulatory system.

2, family expenses internal-circulation type range hood according to claim 1, it is characterized in that jet pump [15] is made up of the jet pump housing [28], nozzle [29], Sealed casing pipe [30], nylon tube [31], nozzle [29] is positioned at the water inlet of the jet pump housing [28], and communicate with the jet pump intake, Sealed casing pipe [30] is fixed on the suction inlet place of the jet pump housing [28], nylon tube [31] is enclosed within on the delivery port of the jet pump housing, and the water inlet of jet pump, delivery port and suction inlet are respectively by three-way connection [32,33,34] and other members.