CN2674170Y

CN2674170Y - Centrifugal electric fan used for central air conditioner or ventilation system

Info

Publication number: CN2674170Y
Application number: CN 200320123464
Authority: CN
Inventors: 周俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-18
Filing date: 2003-12-18
Publication date: 2005-01-26
Anticipated expiration: 2013-12-18

Abstract

The utility model relates to a centrifugal fan used for a central air conditioner or a ventilation system. In the working process, the noise generated by a motor has little influence to the outsid. The air outlet of a case can be arranged according to requirements of projects, so the installation is very convenient. The utility model mainly comprises the motor, a motor base, a blade wheel and an outer case. The case body of the outer case is respectively provided with an air inlet and an air outlet, and the blade wheel is sheathed on a main shaft of the motor. One end of the blade wheel is an air suction opening and far from one end of the motor. The utility model is characterized in that the motor, the motor base and the blade wheel are arranged in the outer case, and the motor base is connected with a bracket in the outer case. The bracket is connected with a lateral plate which is provided with a venting opening. One end of the venting opening is connected with a conical pipe, and the end part of the other end of the conical pipe is extended in the air suction opening of the blade wheel and maintains coaxial with an axle hole of the blade wheel. The other end of the venting opening is communicated with the air inlet of the case through a ventilating device.

Description

The centrifugal blower that uses in central air conditioning or the ventilation system

(1) technical field

The utility model relates to centrifugal blower, is specially the centrifugal blower that uses in central air conditioning or the ventilation system.

(2) background technique

The centrifugal blower that uses in existing central air conditioning or the ventilation system, it mainly comprises motor, motor cabinet, impeller, shell, and impeller set is loaded on the main shaft of motor, and the outside of impeller is equipped with shell.The shortcoming of this centrifugal blower is exactly that motor is directly exposed to the outside, the noise influence to external world that motor produces in the process of work is bigger, because shell is scroll casing shape, the position of its exhaust outlet is fixed substantially, in project installation, must take into account the connection of pipeline and the mounting point of centrifugal blower simultaneously, not too convenient.

(3) summary of the invention

At the centrifugal blower that uses in existing central air conditioning or the ventilation system, motor is directly exposed to the outside, the influence to external world of the noise of motor is bigger, the exhaust outlet position of centrifugal blower is fixed substantially, shortcoming not too easily in project installation, the utility model provides the centrifugal blower that uses in another central air conditioning or the ventilation system, the noise influence to external world that motor produces in the process of work is less, the exhaust outlet position of centrifugal blower can be provided with according to the needs on the engineering, and is very convenient during installation.

The technical solution of the utility model is such: it mainly comprises motor, motor cabinet, impeller, shell, have intake grill and exhaust outlet on the housing of shell, described impeller set is loaded on the main shaft of described motor, impeller is the air sucking mouth of described impeller away from the end of motor one end, it is characterized in that described motor, motor cabinet and impeller are installed in the described shell; In the enclosure, described motor cabinet connects support, support connects side plate, have ventilated port on the side plate, one end of ventilated port connects conical tube, the end of the other end of this conical tube is stretched into described impeller air sucking mouth and is kept coaxality with the axis hole of impeller, and the other end of ventilated port communicates with the intake grill of described shell by ventilation plant.

It is further characterized in that described ventilation plant is exactly a pipeline, the two ends of pipeline respectively with described side plate on the other end of ventilated port and the intake grill of shell be connected; Described ventilation plant comprises baffle plate, filter, described baffle plate, filter are installed between the wall that has intake grill of described side plate and shell, described baffle plate and filter are connected with body seal respectively, have ventilated port on the baffle plate, ventilated port is connected by the other end of ventilated port on pipeline and the described side plate, and the filtering surface of described filter is facing to the ventilated port of described baffle plate; On the sidewall of described shell door is installed; On one side that described side plate is installed, on the sidewall of shell door is installed; Described shell is by two-layered steel plates or aluminium sheet and is filled in polyurethane interlayer between the two-ply or the composite layered plate of expanded polystyrene interlayer is made.

The utility model adopts after the said structure, and motor is installed in the shell, and the noise influence to external world of machine operation generation is less like this, because shell is to be made by the material of sound absorption damping, has so further reduced the noise influence to external world of motor again; Constantly suck air during wheel rotation from the external world, air density in the shell rises, pressure in the shell increases, on shell, arbitrarily open an exhaust outlet like this, air in the shell can be discharged fast, therefore the position of the exhaust outlet of shell can be provided with according to the needs of engineering, installs easily like this

(4) description of drawings

Fig. 1 is the partial sectional view of stereogram of the present utility model;

Fig. 2 is textural association figure of the present utility model;

Fig. 3 is 1/4th sectional views of the structural drawing of impeller, conical pipe and side plate;

Fig. 4 is the partial sectional view that the stereogram of the present utility model of filter is installed.

(5) embodiment

See Fig. 1, Fig. 2, the utility model mainly comprises motor 2, motor cabinet 1, impeller 3, shell 7, have intake grill 8 and exhaust outlet 10 on the housing of shell 7, impeller 3 is set in the main shaft of motor 2, impeller 3 is the air sucking mouth of impeller 3 away from the end of motor 2 one ends, and motor 2, motor cabinet 1 and impeller 3 are installed in the shell 7; In shell 7, motor cabinet 1 connects support 4, support 4 connects side plate 5, have ventilated port 6 on the side plate 5, one end of ventilated port 6 connects conical tube 14 (see Fig. 3, for the clear structure of expressing conical tube 14, impeller 3, side plate 5, the ratio of Fig. 3 and Fig. 1, Fig. 2, Fig. 4's is inconsistent), the end of the other end of conical tube 14 is stretched into impeller 3 air sucking mouths and is kept coaxality with the axis hole of impeller 3, and the other end of ventilated port communicates with the intake grill 8 of shell by ventilation plant.Described ventilation plant is exactly a pipeline 11, the two ends of pipeline 11 respectively with side plate on the other end of ventilated port 6 and the intake grill 8 of shell be connected; See Fig. 1, Fig. 4, described ventilation plant comprises baffle plate 15, filter 16, baffle plate 15, filter 16 is installed between the wall that has intake grill 8 of side plate 5 and shell, baffle plate 15 and filter 16 are tightly connected with shell 7 respectively, (ventilated port among Fig. 4 on the baffle plate 15 is filtered device 16 and covers to have ventilated port on the baffle plate, baffle plate 15 and the wall that has intake grill of shell 7 are that the structure of outer cover plate 13 among Fig. 2 is identical), the ventilated port of baffle plate 15 is connected by the other end of the ventilated port 6 on pipeline 11 and the side plate, and the filtering surface of filter 16 is facing to the ventilated port of baffle plate 15; Door 9 is installed on the sidewall of shell 7; Filter is installed in the centrifugal blower,, has door 9 on the sidewall of shell, door 9 is installed is and install for convenience and the maintenance of motor on one side that side plate is installed; Described shell 7 is by two-layered steel plates or aluminium sheet and is filled in polyurethane interlayer between the two-ply or the composite layered plate of expanded polystyrene interlayer is made, also can adopt other material certainly, as long as can the sound insulation damping.Elder generation is with impeller 3 during the assembling centrifugal blower, motor 2, motor cabinet 1 connects, support 4 is connected with motor cabinet 1 screw, side plate 5 is connected with conical pipe 14 screws, also can be welded to connect, conical pipe 14 is stretched into the air sucking mouth of impeller 3, side plate 5 is connected with support 4 usefulness screws, keep 1 to 2 centimetre spacing between the outlet of assurance conical pipe 14 and the impeller 3, and make the axis hole of this outlet and impeller 3 keep coaxality, this part that assembles is installed in the shell 7, the inner cover plate 12 of shell is installed then, outer cover plate 13 is pushed down with Stamping Steel Ribbon respectively between the ventilated port 6 of pipeline 11 and side plate 5 and the intake grill 8 again and is connected with self-plugging rivet, shuts access door 9 at last.When the cleanliness of air is had requirement, filter can be installed, baffle plate 15, filter 16 are installed between the wall that has intake grill (being inner cover plate 12 among Fig. 2) of side plate 5 and shell, around shell 7 and baffle plate 15, the filter 16 adjacent position and baffle plate 15, filter 16 around iron bar is installed, sealing between the injection polyurethane guarantees between the adjacent iron bar then respectively.If the size of filter is too little, and very big spacing is arranged between the shell, seal frame can be installed around filter, must just can enter the ventilated port of baffle plate 15 by filter 16 as long as guarantee air outside.

Claims

1, the centrifugal blower that uses in central air conditioning or the ventilation system, it mainly comprises motor, motor cabinet, impeller, shell, have intake grill and exhaust outlet on the housing of shell, described impeller set is loaded on the main shaft of described motor, impeller is the air sucking mouth of described impeller away from the end of motor one end, it is characterized in that described motor, motor cabinet and impeller are installed in the described shell; In the enclosure, described motor cabinet connects support, support connects side plate, have ventilated port on the side plate, one end of ventilated port connects conical tube, the end of the other end of this conical tube is stretched into described impeller air sucking mouth and is kept coaxality with the axis hole of impeller, and the other end of ventilated port communicates with the intake grill of described shell by ventilation plant.

2, the centrifugal blower that uses in central air conditioning according to claim 1 or the ventilation system is characterized in that described ventilation plant is exactly a pipeline, the two ends of pipeline respectively with described side plate on the other end of ventilated port and the intake grill of shell be connected.

3, the centrifugal blower that uses in central air conditioning according to claim 1 or the ventilation system, it is characterized in that described ventilation plant comprises baffle plate, filter, described baffle plate, filter are installed between the wall that has intake grill of described side plate and shell, described baffle plate and filter are connected with body seal respectively, have ventilated port on the baffle plate, ventilated port is connected with the ventilated port the other end on the described side plate by pipeline and communicates, and the filtering surface of described filter is facing to the ventilated port of described baffle plate.

4, the centrifugal blower that uses in central air conditioning according to claim 2 or the ventilation system is characterized in that having door on the sidewall of described shell.

5, the centrifugal blower that uses in central air conditioning according to claim 3 or the ventilation system is characterized in that having door on one side that described side plate is installed on the sidewall of shell.

6, centrifugal blower according to claim 1 is characterized in that described shell is by two-layered steel plates or aluminium sheet and is filled in polyurethane interlayer between the two-ply or the composite layered plate of expanded polystyrene interlayer is made.