CN2420560Y - Centrafugal air blower and air conditioner equipment with said centrafugal air blower - Google Patents

Abstract

The utility model relates to a centrifugal air blower and an air conditioner provided with a centrifugal air blower. Blades 18c arranged on a back edge C in a rotary direction is turned to drive a connecting part 61 which is near a protective cover side to be much positioned on an inverted rotary direction (the reverse direction of B) compared with a connecting part 62 which is near a hub, and thus, the wind direction of air which flows in from an opening of the protective cover 18b and air blown out of the blades 18c is approximately the same on the protective cover side and the hub side, so that wind can flow into a heat exchanger to prevent cooling effect from reducing.

Description

Centrifugal blower and be provided with the aircondition of this centrifugal blower

The utility model is relevant for centrifugal blower and the aircondition that disposes this centrifugal blower.

Centrifugal blower by fixing onboard motor, connect the wheel hub of motor drive shaft, with respect to wheel hub and the protective housing of subtend configuration and be configured in wheel hub and protective housing between the polylith blade form.

The aircondition that disposes such centrifugal blower is very practical.This aircondition disposes the shell of metal quadrilateral shape usually, centrifugal blower located therein, is configured in heat exchanger around the centrifugal blower, receives the drainage tray of the water that drips from heat exchanger etc.In these devices, the motor of centrifugal blower, heat exchanger are fixed on the top board of shell.

According to original technology,,, therefore can't blow equably, thereby reduce refrigeration heat exchanger so the air quantity of sending from centrifugal blower is more than the protective housing side in hub side because the shape of blade is simple plane shape.

Fig. 7 represents the bias of wind.Expression blade 70, wheel hub 71 and protective housing 72.Blade 70 is connecting protective housing 72 and wheel hub 71 respectively.The wind A1 that sucks from the opening of protective housing 72 comes out from blade 70, the air quantity of this moment as shown by arrows, the air quantity of protective housing one side is bigger than the air quantity of wheel hub one side.

The utility model is to produce for solving original technical task.Purpose is to provide a kind of wind speed profile homogeneous of the wind of sending into heat exchanger, aircondition of good refrigeration effect of making.

Centrifugal blower of the present utility model disposes motor, connects the wheel hub of motor drive shaft, with the protective housing of wheel hub subtend configuration and be located at wheel hub and protective housing between the polylith blade, protective housing one side of leaning on of trailing edge is positioned at more on the position of despining direction than a side of roller hub.

Aircondition of the present utility model is provided with the centrifugal blower of above-mentioned feature in main engine body.

Adopt said structure, enter the air of centrifugal shape outflow is adsorbed and be in the back by blade wind direction from the opening of protective housing, because blade is the cause of above-mentioned shape, so by protective housing one side and approximate equality roller hub one side, therefore wind inflow heat exchanger equably, thus the refrigeration reduction prevented.

The installing space of best above-mentioned blade is unequal.By making unequal spacing, can alleviate the distinguished and admirable noise of crossing the blade generation, thereby improve quietness.

Simple declaration to accompanying drawing

Fig. 1 is the side view of the formation of aircondition.

Fig. 2 is the insight structural map of aircondition.

Fig. 3 is the figure that sees the aircondition main engine body from the top, is the state that removes behind sheath top plate and the inner face thermal-protective material.

Fig. 4 represents turbofan, and A is a plan view, and B is an innings sectional view.

Fig. 5 is the sectional view that is fixed on the motor on the sheath top plate and is installed in the turbofan on the motor.

Fig. 6 is the distribution map from the wind of turbofan outflow of the present utility model.

Fig. 7 is the distribution map from the wind of original turbofan outflow.

Following with reference to accompanying drawing, the embodiment of present design is specified.

Fig. 1 is the structure schematic diagram of the utility model embodiment's ceiling board layout type air-conditioning.Side-looking synoptic diagram with reference to Fig. 1 has four-sided openings 2 on ceiling board 1.The main engine body 10 of aircondition enters into ceiling board inboard 4 by indoor 3 one sides by opening 2, by from the sagging suspension rod 6 of the beam that extends at ceiling board inboard 45, and utilizes metalwork 14 that main engine body is lifted on ceiling board inboard 4.After finishing lifting, at the downside of main engine body 10 decoration panel 50 is installed again.Decoration panel 50 covers the profile of the opening 2 of ceiling board 1, from the indoor opening 2 of can't see.

Fig. 2 is an embodiment's of the present utility model cross-sectional apparent structure figure.Fig. 3 is a plan view of being seen main engine body 10 by the top, and the state behind sheath top plate 16a and the inner face thermal-protective material 21 is omitted in expression.

Describe below with reference to Fig. 2 and Fig. 3.Main engine body 10 has the shell 15 that constitutes its profile.Shell 15 is the quadrilateral case shape that the below is opened wide, and is made and is made up of top board 16, side plate 16a by sheet metal.Dispose the motor 17 that is fixed on sheath top plate 16 central authorities in the shell 15, flow into the horn mouth 19 of turbofan 18, roughly heat exchanger 20 around the turbofan 18 and the drainage tray 30 that receives the water that drips from heat exchanger 20 by turbofan 18, the guiding air of motor 17 rotations.After accumulating in water in the drainage tray 30 and being sucted, be discharged to outdoor via waste pipe 26 by draining pump 25.Connect refrigerant pipe 27 on the heat exchanger 20.

In addition, be formed with the strengthening rib groove on sheath top plate 16a, air can cause flowing to disorderly with the collision of rib groove.For this reason, the downside at sheath top plate 16a is connected to the panel beating surface plate 16c (with reference to Fig. 2) that rectification is used to air.

The central part of decoration panel 50 forms air suction inlet 51, and its periphery is an air blow-off outlet 52.Air suction inlet 51 places dispose the air filter 53 of catching dust in the air.

Running to above-mentioned air conditioner is done an explanation.Make turbofan 18 rotations by motor 17, indoor air just shown in hollow arrow, sucks main engine body 10 and blows to heat exchanger 20 by air suction inlet 51.In passing through the process of heat exchanger 20, air is cooled (summer) or is heated (winter), and this air is blown to indoor by the air blow-off outlet 52 of decoration panel 50 on every side from main engine body 10 shown in the arrow that has hatching.

Fig. 4 A is the plan view of turbofan 18, and Fig. 4 B is that sectional view cuts open in office.Turbofan 18 dispose the wheel hub 18a that is connected and fixed motor drive shaft and and the protective housing 18b of wheel hub 18a subtend configuration and be located at wheel hub 18a and protective housing 18b between, unequal a plurality of blade 18c at interval.On above-mentioned wheel hub 18a, be provided with vent hole 18d, and be equipped with guarantee and above-mentioned wheel hub 18a between the state in gap under cover wheel hub 18a, be provided with the wheel hub guard shield 18e of opening on its peripheral part simultaneously.Arrow B shown in Fig. 4 A is represented sense of rotation.

Fig. 5 is the sectional view that is fixed on the motor 17 on the sheath top plate 16a and is installed in the turbofan 18 on the motor 17.Arrow A 1 expression sucks and blows out from 18 one-tenth centrifugal shapes of turbofan the flow process of the wind of after-blow heat exchanger 20 among the figure by suction port 51 along with the rotation of turbofan 18.

The blade 18c of turbofan 18 connects protective housing 18b and wheel hub 18a respectively.As shown in Figure 4, represent with 61 that by the joint of protective housing one side the joint of roller hub one side is represented with 62.At trailing edge (part of on Fig. 4 A, representing) the twist blade 18c of sense of rotation with C, the joint 61 of protective housing one side is in than the joint 62 of wheel hub one side more on the position of despining direction (for the opposite direction of B),

Therefore, as shown in Figure 6, the wind that blows out from 18 one-tenth apocarpies of turbofan be not partial to blade 18c by the joint 61 of protective housing one side and the roller hub one side joint 62 either party, very homogeneous.

Simultaneously, the disposition interval of each blade 18c is converted into angle, and with θ 1, θ 2 ... θ 7 represents in Fig. 4 A, these angles θ 1, θ 2 ... θ 7 is unequal, for example, sets 1=54 ° of θ, θ 2=53 °, θ 3=50 °, θ 4=49 °, θ 5=55 °, θ 6=52 °, θ 7=47 °.By these unequal settings, can alleviate the distinguished and admirable noise of crossing blade 18c generation, thereby improve the quietness of device.

As mentioned above, adopt centrifugal blower of the present utility model or aircondition, more being positioned on the position of despining direction than roller hub one side of trailing edge by protective housing one side, therefore enter the wind direction that is adsorbed and be the air that centrifugal shape sends by blade from the opening of protective housing, roughly even by protective housing one side and roller hub one side, therefore wind inflow heat exchanger equably, thus the refrigeration reduction prevented.

Claims (4)

1. centrifugal blower, the protective housing that dispose motor, connect the wheel hub of motor drive shaft, disposes with the wheel hub subtend and be located at wheel hub and protective housing between the polylith blade,

It is characterized in that protective housing one side of leaning on of trailing edge more is positioned at the position of despining direction than roller hub one side.

2. centrifugal blower according to claim 1 is characterized in that the installing space of blade is unequal.

3. an aircondition is the aircondition that is configured in ceiling board,

The protective housing that has the motor that is fixed in the aircondition main engine body, the wheel hub that connects motor drive shaft, disposes with the wheel hub subtend and be located at wheel hub and protective housing between the polylith blade,

It is characterized in that protective housing one side of leaning on of trailing edge more is positioned at the position of despining direction than roller hub one side.

4. aircondition according to claim 3 is characterized in that the installing space of blade is unequal.

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