CN201081339Y

CN201081339Y - Controllable inductive terminal air mixer

Info

Publication number: CN201081339Y
Application number: CNU2007201513594U
Authority: CN
Inventors: 杨守信
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-07-12
Filing date: 2007-07-12
Publication date: 2008-07-02
Anticipated expiration: 2017-07-12

Abstract

The utility model provides a controllable and inducible tail-end air mixing device. A main body consists of a cylindrical steel body (11), wherein, one end of the main body is a fresh-air inlet (9) and the other end is provided with an air-conditioning outlet. The cylindrical steel body (11) and a built-in induced adjutage (10) form an induced room with an opening towards the air-conditioning outlet. The induced room and the lateral wall of a duct of the air-conditioning outlet are provided with a secondary air inlet (8) and a poriferous circular tube (7). An axial-flow fan (5) is arranged between the induced room and the fresh-air inlet. The air-conditioning outlet is provided with a ring-shaped fair water fin (6). A primary air temperature probe (1) is arranged at an inlet, and a secondary air temperature probe (2) is arranged at a secondary air inlet. The difference value of the primary air temperature signal and the secondary air temperature signal is compared with a presetting value by a temperature controller (0). If the difference value is greater than the presetting value, a mixing ratio signal is outputted to a blower frequency converting controller (4), the rotating speed of the axial-flow fan (5) is adjusted by a PID and the fresh air volume is adjusted, thereby ensuring that the temperature of the discharged mixing air satisfies the operating requirement.

Description

A kind of controlled induction type terminal wind mixing apparatus

Technical field:

The utility model relates to a kind of vav terminal air mixing device, particularly a kind of controlled induction type terminal wind mixing apparatus.

Background technology:

At present, in the air conditioner field, the induced blast-variable adjusting end equipment is used widely.The effect of induced blast-variable adjusting end equipment is to induce secondary wind at a high speed with new wind once, through send after mixing (row) from indoor (outside).At present, the induction type end equipment has two kinds, a kind of once, secondary wind regulates simultaneously, another only adjusts once new wind air quantity.

What exploitation can be widely used in underground parking (storehouse) and large space building send (row) wind and smoke evacuation system, effective inducing peripheral air, replace sending (row) airduct road, pernicious gas is induced the big flow, the axial flow apparatus for deivation that send (row) air draft to design code, exhaust opening from the stagnant area be the further problem of solution that remains in the reality.

The utility model content:

The purpose of this utility model provides a kind of controlled induction type terminal wind mixing apparatus, can be under the constant situation of secondary air temperature degree, air quantity, according to new wind variation of temperature once, regulate once new wind air quantity automatically, thereby make the mixing wind-warm syndrome degree of dispatch reach instructions for use.

For realizing described purpose, the utility model provides a kind of controlled induction type terminal wind mixing apparatus, comprise cylinder steel body, temperature controller, once new wind-warm syndrome degree transmitter, secondary air temperature degree transmitter, mix wind-warm syndrome degree transmitter, fan frequency conversion controller, axial flow blower, deflector, stephanoporate round tube, fresh inlet, secondary wind inlet and a jet playpipe.Establish the air channel in the cylinder steel body, an end is new wind air inlet once, and the other end sets out the air port.By inducing playpipe to be provided with an induction room, induction room has an opening in the air channel, and opening is towards air outlet.Be provided with a secondary wind inlet and a stephanoporate round tube concentric at the air channel of induction room and air outlet sidewall with the air channel.Between induction room and the new wind air inlet axial flow blower is set.Cylinder steel body air outlet is provided with ring diversion plate.

Temperature controller is according to the signal of the once new wind-warm syndrome degree transmitter of receiving, secondary air temperature degree transmitter and mixing wind-warm syndrome degree transmitter, calculate to mix wind and wind-warm syndrome degree difference and with the comparison of temperature difference setting value, when difference greater than when setting value, the once new wind of output mixes wind and gives the frequency conversion fan device than signal, and shows secondary air temperature degree transmitter temperatures value in real time.Fan frequency converter is adjusted the axial flow blower rotating speed according to mixing wind than signal PID, changes once new wind air quantity.Stephanoporate round tube and deflector form the discharging negative pressure, help once new wind and secondary wind to mix wind and evenly mix and dispatch.

The utility model will be elaborated with reference to accompanying drawing in conjunction with the embodiments, so that to the purpose of this utility model, feature and advantage are carried out more deep understanding.

Description of drawings:

Fig. 1 is the structural representation of controlled induction type terminal wind mixing apparatus.

The specific embodiment:

As shown in Figure 1, device comprise temperature controller 0, once new wind-warm syndrome degree transmitter 1, secondary air temperature degree transmitter 2, mix wind-warm syndrome degree transmitter 3, fan frequency conversion controller 4, axial flow blower 5, deflector 6, stephanoporate round tube 7, secondary wind inlet 8, fresh inlet 9, jet playpipe 10 and a cylinder steel body 11.Once new wind, the secondary wind that once new wind-warm syndrome degree transmitter 1, secondary air temperature degree transmitter 2, mixing wind-warm syndrome degree transmitter 3 will detect respectively, the temperature signal that mixes wind are converted to standard (4-20mA) signal, are transferred to temperature controller 0 again.The temperature difference controlling value of design temperature controller 0 at first, when the temperature difference of new wind once and secondary wind set value greater than the temperature difference, temperature controller 0 was exported enabling signal fan frequency-variable controller 4.Temperature controller 0 converts data signal to according to the once new wind of receiving with after mixing wind-warm syndrome degree sensor signal, calculate both differences and with setting value relatively.When for once new wind sets value greater than the temperature difference with the temperature difference of mixing wind, temperature controller 0 output temperature difference analog signal fan frequency-variable controller 4, and the real-time temperature that shows once new wind, secondary wind, mixing wind.After the enabling signal of fan frequency conversion controller 4 according to the temperature controller of receiving 0,, change once new wind air quantity, change and mix the wind-warm syndrome degree according to the rotating speed of temperature gap analog signal PID regulating shaft flow fan 5.When the secondary air temperature degree met the demands, temperature controller 0 was not exported control signal, and axial flow blower 5 is not worked.

Deflector 6 helps once new wind and secondary wind evenly to mix for the diffusing flow structure of ring-type, its effect.Once new wind enters air mixing device by a fresh inlet 9, after axial flow blower 5 pressurizations, ejects by jet playpipe 10.Stephanoporate round tube 7 adopts porous plate processing, and cylindrical-shaped structure constitutes plenum chamber with 11 welding of cylinder steel body, has sound deadening simultaneously.Jet playpipe 10 is welded in the stephanoporate round tube 7, the spout size is 0.25～0.5 times an of fresh inlet, when once new wind air quantity was big, jet playpipe 10 jet-stream winds formed negative pressure at stephanoporate round tube 7 and the plenum chamber that cylinder steel body 11 constitutes, and induce secondary wind to enter plenum chamber.

Claims

1. controlled induction type terminal wind mixing apparatus, comprise temperature controller (0), once new wind-warm syndrome degree transmitter (1), secondary air temperature degree transmitter (2), mix wind-warm syndrome degree transmitter (3), fan frequency conversion controller (4), axial flow blower (5), deflector (6), stephanoporate round tube (7), secondary wind inlet (8), a fresh inlet (9), jet playpipe (10) and cylinder steel body (11), it is characterized in that: once new wind-warm syndrome degree transmitter (1) is arranged in the fresh inlet (9), links to each other with temperature controller (0) by holding wire; Secondary air temperature degree transmitter (2) is arranged in the secondary wind inlet (8), links to each other with temperature controller (0) by holding wire; Temperature controller (1) links to each other with fan frequency conversion controller (4) by holding wire, and fan frequency converter (4) links to each other with axial flow blower (5) by control line.

2. controlled induction type terminal wind mixing apparatus as claimed in claim 1 is characterized in that: the perforate of stephanoporate round tube wallboard is for circular, and the plum blossom shape is arranged.

3. controlled induction type terminal wind mixing apparatus as claimed in claim 1 is characterized in that: the exit ring diversion plate is a cell structure.