A kind of window with purification device
Technical field
The utility model belongs to door and window for building, is related to a kind of window with purification device.
Background technique
Envelope in the heavy constructions such as market, in the living room of people, in office building, in public arenas such as buses
It closes in space, does not open a window for a long time, the ventilation effect in enclosure space is poor, and oxygen content is low in air, and contains formaldehyde, an oxygen
Change the poisonous and harmful substances such as carbon, a large amount of carbon dioxide, is unfavorable for the health of people.Often windowing, although enclosure space
Interior ventilation effect is good, but weather, haze weather etc. of wadding a quilt with cotton of floaing when encountering sand and dust, rain and snow weather, spring, sand and dust, float at sleet
Wadding, haze containing a large amount of PM2.5 etc. can all be entered the room by window, influenced the routine life of people, are exactly usual weather,
There is a large amount of dust to enter;And winter opens a window, a large amount of cold air enters the room, and causes room temperature relatively low, summer is a large amount of
Hot-air enters, and leads to indoor overheating;In the northern indoor heating phase, windowing causes the waste of thermal energy;Summer, people use empty
Temperature is downgraded, windowing also results in the waste of electric energy.It cuts both ways in short, opening a window and not opening a window.
Modern architecture is greatly improved for energy saving consideration, the air-tightness of window.In order to guarantee room ventilation and
The pollutant in air is removed, people can select installation window air purifier.Existing window air purifier only has logical
Wind ventilation, the effect of purification air, winter use clarifier ventilation, outdoor cold air are caused directly to flow by air
It enters indoor, indoor heat therefore is lost to outdoor, lead to the loss of energy;And summer uses clarifier ventilation,
Cause indoor cold air directly to pass through air flow stream and go out interior, therefore indoor temperature rises, air-conditioning temperature-reducing leads to energy again
The loss of amount.Do not have heating function there are also existing window air purifier, so, winter must have other heating equipments
Heat supply causes the increasing of house use cost increased with dimensional footprint.And existing window air purifier and window master
The connection of body is all to be directly threaded into forms by screw to connect with ventilator outer wall;The outer wall of clarifier, but also drop had not only been destroyed in this way
The low leakproofness of clarifier.
Utility model content
The purpose of this utility model is exactly to solve the above-mentioned problems in the prior art, is provided a kind of with purification device
The relative volume of window, the window purification device is small, and the building for installing the window can be achieved with fresh air in the case where window is closed and change
Gas, total heat recovery and air remove haze;Indoor hot and cold capacity usage ratio is high, and low energy consumption.
To achieve the above object, the technical solution of the utility model is: a kind of window with purification device, including frame room
Frame, fan frame, glass and the purification device of inside profile and frame outside profile or including frame indoor profile and frame outside type
Frame, fan frame, middle stile, glass and the purification device or frame indoor profile of material and the frame of frame outside profile, fan frame, middle stile, vacation
The frame of middle stile, glass and purification device or frame indoor profile and frame outside profile, fan frame, Jia Zhong stile, glass and purification dress
It sets;Purification device includes cabinet, multi-layered filtering element, heat exchanger, partition, fresh air air inlet fan, waste air blowing machine and controller;Partition
Cabinet is divided into fresh air air-inlet cavity, fresh air air-out chamber, waste air air-inlet cavity and waste air air-out chamber;Outside the cabinet on fresh air air-inlet cavity top
Outdoor is provided in housing chamber outer end wall into fresh wind port, fresh air air-inlet cavity centre is the multi-layered filtering element being fixedly mounted on partition, fresh air
Air-inlet cavity lower end is fixedly installed with heat exchanger;The indoor end wall lower end of the cabinet shell of fresh air air-out chamber is provided with out fresh wind port;
Waste air air-inlet cavity and waste air air-out chamber are located at the two sides of fresh air air-inlet cavity and fresh air air-out chamber;Cabinet at waste air air-inlet cavity
It is provided with indoor into waste air mouth on the indoor end wall of shell, is provided with outdoor on the outdoor end wall of the cabinet shell at waste air air-out chamber and goes out
Waste air mouth;Both ends are divided into three cavitys that both ends chamber is small, intermediate cavity is big by the demarcation plate that lower end is provided with ventilation opening in heat exchanger;
Intermediate cavity upper end is fresh inlet, the lower end of face multi-layered filtering element;Both ends cavity upper end is provided with fresh air outlet, face fresh air outlet air
Chamber, each fresh air export and are equipped with fresh air air inlet fan;Horizontally disposed waste air pipeline, waste air pipe are uniformly fixed in heat exchanger
Road passes through the via hole on the demarcation plate in heat exchanger, is fixed between the two end cap of heat exchanger, in two end cap respectively
There is the clamping pipe of waste air pipeline and cross air holes, is fixed on the both ends of heat exchanger housing;The two end cap face of heat exchanger is dirty
The waste air import of the waste air outlet and waste air air-out chamber of wind air-inlet cavity;The waste air entrance of waste air air-out chamber is equipped with waste air outlet air
Machine;The operation of controller control fresh air air inlet fan and waste air blowing machine;The cabinet of purification device be fixed on window frame there are case
In body installing port.
It is further preferred that the two end cap of the heat exchanger can use identical structure, including fixing piece and wind
Mouthful;What fixing piece matched by bottom plate, with the sealing bound edge of bottom plate one and multiple internal diameters and waste air pipeline with bottom plate one
It is clamped pipe composition;Air port is the mistake for being provided with multiple apertures corresponding with clamping pipe on fixing piece and being not more than waste air pipe diameter
The plate of air holes;Air port is fixed on fixing piece by screw.The structure of two end cap is also possible to one using including fixing piece and wind
Mouthful structure, another uses an entire terminal cover, the entire terminal cover by bottom plate, with the sealing bound edge of bottom plate one and it is multiple and
The variable diameter clamping pipe composition of bottom plate one, variable diameter clamping pipe one end internal diameter match with waste air pipeline, and other end internal diameter is not more than
Waste air pipe diameter.
It is further preferred that the purification device further includes two groups of auxiliary thermals of electricity;Every group of auxiliary thermal of electricity includes length
Rectangular heating resistor and multiple thermally conductive sheets;The mounting hole to match with heating resistor is milled among each thermally conductive sheet, insulation is parallel
It is through on heating resistor to equidistant arrangement, and is contacted well with heating resistor;The thermally conductive sheet of every group of auxiliary thermal of electricity is by buckle card
Maintenance is connect in fresh air air-out chamber;Heating resistor draws positive and negative polarity wire, and positive and negative polarity wire is connected on power supply, the controller
Control the opening and closing of heating resistor power supply.
It is further preferred that the buckle of the purification device be the thin cabinet of groove type, described thermally conductive sheet one end have to
A few step, the end of step and the thin cabinet of groove type match, and thermally conductive sheet snaps on the end of the thin cabinet of groove type, recessed
The thin cabinet of groove profile is fixed on the inner wall of indoor end wall of the cabinet.
It is further preferred that the thermally conductive sheet is copper thermally conductive sheet, every copper thermally conductive sheet is straight in the position of the mounting hole
Angle bending, the width of bending are just the distance between two copper thermally conductive sheets.It ensure that the spacing between adjacent copper thermally conductive sheet, increase
Big contact area between copper thermally conductive sheet and air between copper thermally conductive sheet and heating resistor, heating conduction is more preferable, to air
Heating speed it is fast.
It is further preferred that the purification device further includes apron flashing;Apron flashing by be fixed together upper end narrow boards,
The inclination outside plate of outside and two side seal boards composition;Apron flashing is fixed on the outdoor end wall of the cabinet shell, two side seal boards
It is separately provided or the both side plate integral structure with cabinet shell.The setting of apron flashing protects cabinet and its outdoor into fresh wind port.
It is further preferred that the purification device further includes throttle setting, throttle setting includes being arranged outside cabinet room
The fresh air inlet air door device and waste air outlet air throttle setting at end;Fresh air inlet air door device and waste air outlet air throttle setting difference
Including a set of or two sets of damper systems;Every set damper system include the positive and negative motor with output gear, one piece of rack gear cover board,
One opening travel switch, a shutoff stroke switch and a contact;Two sets of damper systems are respectively opened using an opening travel
Pass, a shutoff stroke switch and a contact or shared opening travel switch, a shutoff stroke switch and one
Contact, when sharing, the operation of two positive and negative motors is switched by an opening travel, a shutoff stroke switchs and a contact control
System;When motor is one, outdoor is fixed on into end wall outside fresh wind port or the outdoor cabinet shell room of waste air mouth side lower end out
Indoor end on, when motor is two, be fixed on it is outdoor into fresh wind port or it is outdoor go out waste air mouth two sides lower end cabinet shell
In the indoor end of outdoor end wall;Rack gear cover board is slidably attached at outside outdoor cabinet into fresh wind port or at outdoor waste air mouth out
On slideway in the outdoor end of the outdoor end wall of shell, the rack gear on inner face is meshed with the output gear of positive and negative motor;It opens
Open travel switch be fixed on rack gear cover board beginning be in the open position place cabinet shell outdoor end wall indoor end;Closing rows
Cheng Kaiguan is fixed on the indoor end of the outdoor end wall of the cabinet shell at rack gear cover board beginning place in the closed position, is two
When, two structures that become one;Contact is fixed on the beginning of rack gear cover board;The controller controls the operation of positive and negative motor.
The setting of the structure throttle setting, when purification device stops working, controller can control the closing of rack gear cover board, block indoor
The channel of air-flow exchange, prevents in the state that purification device stops working, indoor and outdoor due to temperature is different, pressure difference is different into
Outside heat convection, ensure that the air-tightness of the utility model, effectively reduces building energy consumption in capable window.
It is further preferred that the cabinet of the purification device be fixed on window frame there are cabinet installing port in structure
Be: the shell of cabinet is made of indoor shell and outside shell;At outside shell and indoor cage connection respectively to
It is outer to lean out C-shaped card slot and the planar projections with sawtooth rubbing surface A relatively;One end matches with C-shaped card slot, and the other end has and plane
The connection adhesive tape for the sawtooth rubbing surface B that sawtooth rubbing surface A in protrusion is meshed be fixed on C-shaped card slot and planar projections it
Between, play the role of connection, sealing and thermal insulation;Chock is fixed on the profile of frame indoor, and positioning wooden unit outdoor end is fixed on frame
On the profile of outside, indoor end is fixed on the outdoor end of C-shaped card slot;U-shaped cover board one end is withstood on chock, and the other end withstands on flat
The indoor end of face protrusion, and be fixed on chock;The wooden crimping is connected between frame indoor profile and the indoor shell of cabinet,
It is crimped on U-shaped cover board item.This kind of connection structure by split be clamped in the way of purification device is fixed on window frame it is pre-
It stays in installation hole, does not destroy the cabinet shell of purification device, nor affect on the airtightness of purification device, and chock, spacing timber
Block and wooden these components of crimping have effectively cut off the formation of the connection cold bridge between purification device and window frame, and thermal insulation effect is good;
It also installs simple and convenient.Connection adhesive tape is not easy to misplace or be slided between the indoor shell and outside shell of cabinet.
It is further preferred that described outdoor into being fixed with filter screen on fresh wind port.
It is further preferred that the multi-layered filtering element successively includes prefiltration net, activated carbon adsorption layer, HEPA from top to bottom
High efficiency particulate air, cold catalyst layer and anion generator layer are successively pullably mounted in the clamping protrusion on partition.It is this
The multi-layered filtering element of structure can not only filter the fresh air of entrance clean, thorough;And anion is generated, it is more beneficial to the health of people
Place.
After outdoor fresh air is entered in the utility model by the outdoor of cabinet upper end into fresh wind port, pass through multilayer first
Filter element filtering carries out heat exchange with the dirty gas of indoor discharge subsequently into heat exchanger, and winter room temperature is high, entrance it is new
Wind can absorb the heat total number of the dirty gas of indoor discharge, increase the new air temperature entered, and the waste air temperature of discharge reduces, no
It can lead to indoor temperature decrease because of the entrance of fresh air, and reduce energy loss;Summer room temperature is low, the fresh air of entrance
Heat can be absorbed by the dirty gas total number of indoor discharge, reduce the new air temperature entered, the waste air temperature of discharge increases, will not
Cause indoor temperature to rise sharply because of the entrance of fresh air, therefore reduces the energy being lost to reduce room temperature;So this
The introducing of heat exchanger in utility model not only makes the window realize fresh-air ventilation and air except haze, is also equipped with total heat recovery
Function.The introducing of the auxiliary thermal of electricity in the utility model, also make the window realize winter to newly into the function that heats of air, it is auxiliary
It helps indoor temperature increasing or is only warmed oneself with it.The purification device of the utility model is structurally reasonable, and relative volume is small, realizes fresh air and changes
Gas, total heat recovery and air remove haze, and indoor hot and cold capacity usage ratio is high, and low energy consumption;And indoor temperature increasing can be assisted or only use it
Heating.The connection structure of the utility model does not destroy the cabinet shell of purification device, does not influence the airtightness of purification device, thermal insulation
Effect is good, installs simple and convenient, the multi-layered filtering element of easily disassembled cleaning or replacement purification device.
Detailed description of the invention
Fig. 1 is the main view that the utility model is seen from interior;
Fig. 2 is the AA sectional view of Fig. 1;
Fig. 3 is the portion the C enlarged drawing of Fig. 2;
Fig. 4 is the BB sectional view of Fig. 1;
Fig. 5 is the schematic perspective view of purification device in the utility model;
Fig. 6 is the DD sectional view of Fig. 5;
Fig. 7 is the EE sectional view of Fig. 5;
Fig. 8 is the FF sectional view of Fig. 5;
Fig. 9 is the GG sectional view of Fig. 5;
Figure 10 is the structural schematic diagram that apron flashing and throttle setting are seen from interior in purification device in the utility model;
Figure 11 be in the utility model in purification device waste air outlet air throttle setting from the schematic diagram in terms of outside;
Figure 12 be in the utility model in purification device waste air outlet air throttle setting from the schematic diagram in terms of indoor;
Figure 13 be in the utility model in purification device fresh air inlet air door device from the schematic diagram in terms of outside;
Figure 14 be in the utility model in purification device fresh air inlet air door device from the schematic diagram in terms of indoor;
Figure 15 is the left view of Figure 10;
Figure 16 is the mounting structure of heat exchanger, fresh air air inlet fan and waste air blowing machine in purification device in the utility model
Schematic diagram;
Figure 17 is the HH sectional view of Figure 16;
Figure 18 is the II sectional view of Figure 16;
Figure 19 is the isometric side structure schematic diagram of explosion of heat exchanger in purification device in the utility model;
Figure 20 be in the utility model in purification device in heat exchanger demarcation plate structural schematic diagram;
Figure 21 be in the utility model in purification device in heat exchanger fixing piece structural schematic diagram;
Figure 22 be in the utility model in purification device in heat exchanger air port structural schematic diagram;
Figure 23 is the mounting structure schematic diagram of the auxiliary thermal of electricity in purification device in the utility model;
Figure 24 is the structural schematic diagram of the auxiliary thermal of electricity in purification device in the utility model.
Specific embodiment
The utility model is further described in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, Figure 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, Figure 15,
Shown in Figure 16, Figure 17, Figure 18, Figure 19, Figure 20, Figure 21, Figure 22, Figure 23 and Figure 24, the present embodiment includes frame indoor wood section
101 and frame outside mental section 102 frame 1, fan frame 5, middle stile 3, glass 4 and purification device 2(can also be including frame, fan frame,
Glass and purification device or frame, fan frame, middle stile, Jia Zhong stile, glass and purification device or frame, fan frame, Jia Zhong stile, glass and purification
Device).Purification device 2 goes out including cabinet, multi-layered filtering element 19, heat exchanger 24, partition 25, two fresh air air inlet fans 20, waste airs
Blower 21 and controller.Cabinet is divided into fresh air air-inlet cavity 26, fresh air air-out chamber 27, waste air air-inlet cavity 22 and waste air and gone out by partition 25
Wind chamber 23.Be provided on end wall outside the cabinet shell room on 26 top of fresh air air-inlet cavity it is outdoor into fresh wind port 28, in fresh air air-inlet cavity 26
Between for the multi-layered filtering element 19 that is fixedly mounted on partition 25,26 lower end of fresh air air-inlet cavity is fixedly installed with heat exchanger 24.Fresh air
The indoor end wall lower end of the cabinet shell of air-out chamber 27 is provided with out fresh wind port;Waste air air-inlet cavity 22 and waste air air-out chamber 23 distinguish position
In the two sides of fresh air air-inlet cavity 26 and fresh air air-out chamber 27.Room is provided on the indoor end wall of cabinet shell at waste air air-inlet cavity 22
It is interior into waste air mouth 64, be provided on the outdoor end wall of the cabinet shell at waste air air-out chamber 23 it is outdoor go out waste air mouth 30;Interior is into dirt
The waste air air-inlet cavity 22 of 64 lower end of air port is fixed with another first clarifier 65.It is further preferred that the multi-layered filtering element 19
It from top to bottom successively include prefiltration net, activated carbon adsorption layer, HEPA high efficiency particulate air, cold catalyst layer and anion generator
Layer is pullably mounted in the clamping protrusion on partition 25.Both ends are provided with point of ventilation opening 42 by lower end in heat exchanger 24
Partition 43 divides for both ends chamber is small, intermediate cavity is big three cavitys.Intermediate cavity upper end is fresh inlet 44, face multi-layered filtering element 19
Lower end.Both ends cavity upper end is provided with fresh air outlet 46, face fresh air air-out chamber 26, which, which exports, is equipped with fresh air air inlet on 46
Machine 20.It is uniformly fixed with horizontally disposed waste air pipeline 49 in heat exchanger 24, is provided on demarcation plate 43 and 49 phase of waste air pipeline
Matched via hole 52;Waste air pipeline 49 passes through the via hole 52 on the demarcation plate 43 in heat exchanger, is fixed on heat exchanger
Two end cap between, have the clamping pipe of waste air pipeline in two end cap respectively and cross air holes, two end cap is fixed on outside heat exchanger
The both ends of shell 45.Two end cap can use identical structure, including fixing piece 50 and air port 51;Fixing piece 50 by bottom plate 58, with
Match with waste air pipeline 49 60 groups of clamping pipe of the sealing bound edge 59 of the one of bottom plate 58 and multiple internal diameters with 58 one of bottom plate
At;Air port 51 is to be provided with multiple apertures corresponding with clamping pipe 60 on fixing piece 50 to be less than (when can also be and be equal to, but being equal to
Effect is poor) waste air pipeline 49 caliber mistake air holes 47 plate;Air port 51 is fixed on fixing piece 50 by screw.The structure of two end cap
It is also possible to one using the structure for including fixing piece 50 and air port 51, another uses an entire terminal cover 48, the integral end
Lid 48 is formed by bottom plate 58, with the sealing bound edge 59 of 58 one of bottom plate and multiple variable diameter clamping pipes 53 with 58 one of bottom plate, is become
Diameter clamping 53 one end internal diameter of pipe match with waste air pipeline 49, other end internal diameter be less than (can also be and be equal to, but equal to when effect
Difference) 49 caliber of waste air pipeline.The waste air outlet of the two end cap face waste air air-inlet cavity 22 of heat exchanger 24 and waste air air-out chamber 23
Waste air import.The operation of controller control fresh air air inlet fan 20 and waste air blowing machine 21.The cabinet of purification device 2 is fixed on window
On frame there are cabinet installing port in.
It is further preferred that the cabinet of the purification device 2 be fixed on window frame there are cabinet installing port in knot
Structure is: the shell of cabinet is made of indoor shell 15 and outside shell 7.Outside shell 7 and indoor shell 15 connect
Place is opposite outward respectively to lean out C-shaped card slot 17 and the planar projections 16 with sawtooth rubbing surface A.One end matches with C-shaped card slot 17,
The other end, which has, is fixed on C with the connection adhesive tape 11 of the sawtooth rubbing surface B being meshed of the sawtooth rubbing surface A in planar projections 16
Between shape card slot 17 and planar projections 16, play the role of connection, sealing and thermal insulation.Chock 9 is fixed in frame room by screw 10
On side rail profile 101, positioning 8 outdoor end of wooden unit is fixed on outdoor side frame mental section 102, and indoor end is fixed on C-shaped card slot
17 outdoor end;U-shaped 13 one end of cover board item is withstood on chock 9, and the other end withstands on the indoor end of planar projections 16, and by another spiral shell
Nail 12 is fixed on chock 9;The wooden crimping 14 is connected between frame indoor wood section 101 and the indoor shell 7 of cabinet, crimping
On U-shaped cover board item 13.
It is further preferred that the utility model further includes two groups of auxiliary thermals 18 of electricity.Every group of auxiliary thermal 18 of electricity includes length
Rectangular heating resistor 55 and multiple thermally conductive sheets 57.It is milled with the hole to match with heating resistor 55 among each thermally conductive sheet 57, insulate
Parallel equidistant is through in a row on heating resistor 55, and is contacted well with heating resistor 55;The thermally conductive sheet of every group of auxiliary thermal of electricity
57 are clamped maintenance in fresh air air-out chamber 27 by buckle 54;Heating resistor 55 draws positive and negative polarity wire, and positive and negative polarity wire is connected to
On power supply, the opening and closing of controller control 55 power supply of heating resistor.It is further preferred that the buckle 54 is groove
There are at least one step 56 in the thin cabinet of type, described 57 one end of thermally conductive sheet, and step 56 and the end of the thin cabinet of groove type match,
Thermally conductive sheet 57 snaps on the end of the thin cabinet of groove type, and the thin cabinet of groove type is fixed on the interior of end wall in the cabinet shell room
On wall.It is further preferred that the thermally conductive sheet 57 is copper thermally conductive sheet, position right-angle folding of the every copper thermally conductive sheet in mounting hole
Curved, the width of bending is just the distance between two copper thermally conductive sheets.It ensure that the spacing between adjacent copper thermally conductive sheet, increase
Contact area between copper thermally conductive sheet and air, between copper thermally conductive sheet and heating resistor, heating conduction are more preferable.Further preferably
Ground, it is described outdoor into being fixed with filter screen on fresh wind port 28.
It is further preferred that the utility model further includes apron flashing 6;Apron flashing 6 by be fixed together upper end narrow boards 61,
The inclination outside plate 63 of outside and two side seal boards composition.Apron flashing 6 is fixed on the outdoor end wall 62 of the cabinet shell, upper end
The outdoor end wall 62 of narrow boards 61, inclination outside plate 63 and cabinet shell can be structure as a whole;Two side seal boards are separately provided or and case
The both side plate integral structure of body shell body.
It is further preferred that the utility model further includes throttle setting, throttle setting includes that cabinet outdoor end is arranged in
Fresh air inlet air door device 29 and waste air outlet air throttle setting 31.Fresh air inlet air door device 29 (can also be according to need including two sets
Be arranged it is a set of, when only a set of, since outdoor is long into fresh wind port length, open and close the rack gear cover board time it is long, reaction speed
Degree is slow) damper system, waste air outlet air throttle setting 31 includes a set of damper system.Every set damper system includes a band output gear
36, one pieces of positive and negative motor, 37, shutoff stroke switches 38 of the opening travel switch of rack gear cover board 32, one of wheel 35 and a touching
First 39.Two sets of damper systems of fresh air inlet air door device 29 share 37, shutoff stroke switches of an opening travel switch
Two opening travel switches, 37, two shutoff stroke switches 38 and two touchings can also be set as needed in a 38 and contact 39(
It is first 39), 37, shutoff stroke switches 38 of an opening travel switch and a contact 39 by controller control two it is positive and negative
The operation of motor 36.The positive and negative motor 36 of waste air outlet air throttle setting 31 is fixed on the outdoor 30 side lower end of waste air mouth out
Outside cabinet shell room in the indoor end of end wall 62;The positive and negative motor 36 of two of fresh air inlet air door device 29 is fixed on outdoor into new
Outside the cabinet shell room of 28 two sides lower end of air port in the indoor end of end wall 62.The clamping side 33 of 32 upper and lower side of rack gear cover board is slidably
Ground is connected to the c-type card in outdoor cabinet shell room into fresh wind port 28 or at outdoor waste air mouth 30 out in the outdoor end of end wall 62
In slot slideway 34, the rack gear 40 on inner face is meshed with the output gear 35 of positive and negative motor 36.Opening travel switch 37 is solid
Be scheduled on 32 beginning of rack gear cover board be in the open position place cabinet shell outdoor end wall 62 indoor end.Shutoff stroke switch 38
It is fixed on the indoor end of the outdoor end wall 62 of the cabinet shell at 32 beginning of rack gear cover board place in the closed position, when being two,
Two structures that become one.Contact 39 is fixed on the beginning of rack gear cover board 32;The controller also controls positive and negative motor 36
Operation.
Above-described embodiment be only it is preferred and illustrative, those skilled in the art can do according to the description of this patent
Change with technology, is all covered by the protection scope of this patent.