CN113091156A

CN113091156A - Energy-saving control device for central air-conditioning system

Info

Publication number: CN113091156A
Application number: CN202110404786.3A
Authority: CN
Inventors: 方壮浩
Original assignee: Shenzhen Senhao Weiye Refrigeration Equipment Co ltd
Current assignee: Shenzhen Senhao Weiye Refrigeration Equipment Co ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-07-09

Abstract

The invention discloses an energy-saving control device for a central air-conditioning system, which comprises an air-conditioning outdoor unit body, an air inlet pipe connected with the body, an adjusting device for controlling air inlet of the air inlet pipe and a heat preservation device for stabilizing the internal temperature of the body, wherein the air inlet pipe comprises a first pipe body arranged in an expanding manner, a second pipe body connected with the first pipe body, a third pipe body connected with the second pipe body and obliquely arranged, and a fourth pipe body connected with the other end of the third pipe body, the fourth pipe body is parallel to the second pipe body, and the longitudinal section of the fourth pipe body is a regular polygon. Because the air inlet pipe, the adjusting device and the heat preservation device are arranged, the connecting rod and the driving piece can conveniently drive the expansion plate to enter and exit the through hole, and the fourth pipe body is conveniently sealed, so that the temperature change caused by the external air entering the body can be prevented, and the purpose of energy conservation can be achieved.

Description

Energy-saving control device for central air-conditioning system

Technical Field

The invention belongs to the technical field of central air conditioners, and particularly relates to an energy-saving control device for a central air conditioning system.

Background

The central air conditioner generally adopts the liquid gasification refrigerated principle to cool down, but the current central air conditioner needs very long guide time when starting, just can send the wind of certain temperature into indoor after the certain time, and the consumption when the central air conditioner starts is great, and the heat preservation effect of the outer machine of air conditioner is relatively poor, and outside air and heat cause the influence to the gas temperature in the outer machine of air conditioner easily.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides an energy-saving control device for a central air-conditioning system, which has the advantages of insulating the air entering an air-conditioning outdoor unit, preventing the external air and heat from entering the air-conditioning outdoor unit, preventing the air inside the air-conditioning outdoor unit from escaping, keeping the temperature inside the air-conditioning outdoor unit stable, and reducing the power consumption of the air-conditioning when being started.

The invention is realized in such a way, the energy-saving control device for the central air-conditioning system comprises an air-conditioning outdoor unit body, an air inlet pipe connected with the body, an adjusting device for controlling the air inlet of the air inlet pipe and a heat preservation device for stabilizing the internal temperature of the body, wherein the air inlet pipe comprises a first pipe body arranged in an flaring manner, a second pipe body connected with the first pipe body, a third pipe body connected with the second pipe body and obliquely arranged, and a fourth pipe body connected with the other end of the third pipe body, the fourth pipe body is parallel to the second pipe body, and the longitudinal section of the fourth pipe body is a regular polygon;

the adjusting device comprises a sleeve arranged outside the fourth pipe body, a plurality of telescopic plates arranged inside the sleeve, a plurality of through holes arranged on the fourth pipe body and used for extending the telescopic plates, a turning plate hinged inside the through holes, a sealing part used for closing the turning plate and a telescopic part used for controlling the telescopic plates to move, the turning plate is connected with the fourth pipe body through a torsion spring, the included angle between the two telescopic plates is the same, the telescopic plates are perpendicular to the fourth pipe body, and when the plurality of telescopic plates completely enter the fourth pipe body, the longitudinal sections of the plurality of telescopic plates and the fourth pipe body are the same;

the telescopic part comprises a connecting rod, a guide groove and a driving piece, wherein the connecting rod is connected with the telescopic plate, the guide groove is parallel to the telescopic plate, the driving piece is matched with the connecting rod, and the moving direction of the driving piece is parallel to the telescopic plate.

Preferably, the sealing member includes an extension portion disposed at one end of the flap, a first connecting portion disposed on the extension portion and inclined, a second connecting portion connected to the first connecting portion, a plurality of first protrusions disposed on the second connecting portion, and a first notch disposed on the fourth tube and matched with the extension portion, and the extension portion and the flap are integrally formed.

Preferably, a first concave portion is provided in the first notch to mate with the first convex portion, and a rubber pad is provided inside the first concave portion.

Preferably, a strip-shaped second convex portion is disposed on one side wall of the expansion plate, a second concave portion matched with the second convex portion is disposed on the other side wall of the expansion plate, and when the plurality of expansion plates completely enter the fourth pipe body, the adjacent second convex portions and the second concave portions are attached to each other.

Preferably, the heat preservation device comprises an outer shell arranged on the outer side of the air inlet pipe, an inner shell connected with the outer shell, a heat insulation layer arranged inside the outer shell, a first cavity arranged between the heat insulation layer and the outer shell, and a second cavity arranged between the inner shell and the heat insulation layer.

Preferably, a heat conducting plate is arranged in the first cavity and on the heat insulating layer, a plurality of fins are arranged on the heat conducting plate, and a plurality of tapered heat conducting pins extending into the second cavity are arranged on the heat conducting plate.

Preferably, the second cavity is internally provided with a cooling pipe made of a heat conducting material and made into a closed shape, the cooling pipe comprises a condensation section connected with the heat insulation layer, an evaporation section connected with the inner shell, a third cavity arranged in the cooling pipe and filled with a phase-change cooling liquid, and a sintering wall arranged in the third cavity and provided with a plurality of tiny holes, and the evaporation section is communicated with the condensation section.

Preferably, the inner shell is provided with a heat transfer plate connected with the evaporation section, and the heat transfer plate is contacted with the air inlet pipe.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention has the advantages that through the arrangement of the body, the air inlet pipe, the adjusting device and the heat preservation device, air enters the body through the air inlet pipe, the fourth pipe body is higher than the second pipe body and can reduce the dust in the air, the sleeve pipe is fixedly connected on the outer wall of the fourth pipe body, the sleeve pipe and the outer wall of the fourth pipe body are sealed, the plurality of expansion plates can synchronously penetrate through the through holes and enter the inner part of the fourth pipe body, after the plurality of expansion plates completely enter the inner part of the fourth pipe body, the plurality of expansion plates can be spliced into a whole and sealed mutually, the external air is reduced from entering the body, meanwhile, the air escape in the body is avoided, the turnover plate can be automatically reset through the torsional spring connection, the through holes can be sealed when the expansion plates contract in the sleeve pipe, the air is prevented from entering the sleeve pipe to cause turbulent flow, the driving piece can be a miniature linear motor directly purchased on the market, the connecting rod and, the fourth pipe body is convenient to seal, the change of temperature caused by the fact that outside air enters the body is prevented, and the purpose of energy conservation is achieved.

2. According to the invention, the extension part, the first connecting part, the second connecting part, the first convex part and the first notch are arranged, the extension part can abut against one end of the through hole, the turnover plate can be prevented from being turned over excessively, the contact area between the first connecting part and the through hole can be increased by the first connecting part and the second connecting part, the contact area between the extension part and the through hole can be further increased by the first convex part and the first notch, the sealing effect is improved, and gas is prevented from entering the sleeve.

3. According to the invention, by arranging the first concave part and the rubber pad, the first convex part can be inserted into the first concave part, the contact area is further increased, the rubber pad can improve the sealing effect between the first convex part and the first concave part, and simultaneously, the impact generated by the reset of the turning plate is reduced.

4. The present invention can improve the contact area between the plurality of expansion plates and further improve the sealing effect by providing the second convex portion and the second concave portion.

5. According to the invention, through arranging the outer shell, the inner shell, the heat insulation layer, the first cavity and the second cavity, the heat insulation effect of the air inlet pipe can be improved, the external heat entering the body is reduced, the heat insulation of the air in the body is longer, and when the air conditioner is reopened, the air in the body can be directly discharged indoors, so that the purpose of saving energy is achieved without long-time starting.

6. According to the invention, by arranging the heat conducting plate, the fins and the heat conducting needle, the volume of one end of the heat conducting needle close to the second cavity is larger, the heat in the air inlet pipe can be conveniently led out, the external heat is not easy to enter, and the heat insulation effect is improved.

7. According to the invention, the cooling pipe, the condensation section, the evaporation section, the third cavity and the sintering wall are arranged, the cooling pipe is integrally made of a copper pipe with good heat conductivity, when the temperature in the fourth pipe body is overhigh, the phase-change cooling liquid in the evaporation section can evaporate, so that the air pressure is increased, the gasified cooling liquid can enter the condensation section, the cooling liquid can be liquefied again in the condensation section and flows back to the evaporation section through the porous sintering wall, and the heat in the fourth pipe body can be absorbed in the evaporation section and discharged through the condensation section repeatedly, so that the heat preservation effect is improved.

8. The heat transfer plate is arranged, so that the contact area can be increased, the heat in the fourth pipe body can be absorbed in time, and the heat preservation effect is further improved.

Drawings

FIG. 1 is a schematic diagram of a structure provided by an embodiment of the present invention;

FIG. 2 is a left side view provided by an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 according to one embodiment of the present invention;

FIG. 4 is an enlarged view of A in FIG. 3 according to a fifth embodiment of the present invention;

FIG. 5 is an enlarged view at B of FIG. 4 provided by an embodiment of the present invention;

FIG. 6 is an enlarged view at C of FIG. 5 according to an embodiment of the present invention;

FIG. 7 is an enlarged view at D of FIG. 4 provided by an embodiment of the present invention;

FIG. 8 is an enlarged view at E of FIG. 7 provided by an embodiment of the present invention;

FIG. 9 is a schematic diagram of a telescopic plate structure according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram provided in the second embodiment of the present invention;

FIG. 11 is an enlarged view at F of FIG. 10 according to a second embodiment of the present invention;

FIG. 12 is a schematic view of the tooth ring structure of FIG. 10 according to a second embodiment of the present invention;

FIG. 13 is a schematic structural diagram according to a third embodiment of the present invention;

FIG. 14 is an enlarged view at G of FIG. 13 according to a third embodiment of the present invention;

fig. 15 is a schematic structural diagram provided in the fourth embodiment of the present invention.

In the figure: 1. a body; 2. an air inlet pipe; 21. a first pipe body; 22. a second tube body; 23. a third tube; 24. a fourth tube body; 31. a sleeve; 32. a retractable plate; 33. a through hole; 34. turning over a plate; 361. a connecting rod; 362. a guide groove; 363. a drive member; 351. an extension portion; 352. a first connection portion; 353. a second connecting portion; 354. a first convex portion; 355. a first notch; 41. a first recess; 42. a rubber pad; 51. a second convex portion; 52. a second recess; 61. an outer housing; 62. an inner housing; 63. a thermal insulation layer; 64. a first cavity; 65. A second cavity; 71. a heat conducting plate; 72. a fin; 73. a heat conducting pin; 81. a cooling pipe; 811. a condensing section; 812. an evaporation section; 813. a third cavity; 814. sintering the wall; 82. a heat transfer plate.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.

The structure of the present invention will be described in detail below with reference to the accompanying drawings.

Example one

The embodiment of the invention provides an energy-saving control device for a central air-conditioning system, which comprises an air-conditioning outdoor unit body 1, an air inlet pipe 2 connected with the body 1, an adjusting device for controlling air inlet of the air inlet pipe 2 and a heat preservation device for stabilizing the internal temperature of the body 1, wherein the air inlet pipe 2 comprises a first pipe body 21 arranged in a flaring manner, a second pipe body 22 connected with the first pipe body 21, a third pipe body 23 connected with the second pipe body 22 and arranged in an inclined manner and a fourth pipe body 24 connected with the other end of the third pipe body 23, the fourth pipe body 24 is parallel to the second pipe body 22, and the longitudinal section of the fourth pipe body 24 is a regular polygon;

the adjusting device comprises a sleeve 31 arranged outside the fourth pipe body 24, a plurality of expansion plates 32 arranged inside the sleeve 31, a plurality of through holes 33 arranged on the fourth pipe body 24 and used for extending the expansion plates 32, a turning plate 34 hinged inside the through holes 33, a sealing component used for closing the turning plate 34 and an expansion component used for controlling the expansion plates 32 to move, the turning plate 34 is connected with the fourth pipe body 24 through a torsion spring, the included angles between the two expansion plates 32 are the same, the expansion plates 32 are vertical to the fourth pipe body 24, and when the expansion plates 32 completely enter the fourth pipe body 24, the longitudinal sections of the expansion plates 32 are the same as those of the fourth pipe body 24;

the telescopic member includes a connecting rod 361 connected to the telescopic plate 32, a guiding slot 362 parallel to the telescopic plate 32, and a driving member 363 coupled to the connecting rod 361, wherein the driving member 363 moves in a direction parallel to the telescopic plate 32.

According to the invention, through arranging the body 1, the air inlet pipe 2, the adjusting device and the heat preservation device, air enters the body 1 through the air inlet pipe 2, the fourth pipe 24 is higher than the second pipe 22 and can reduce the dust in the air, the sleeve pipe 31 is fixedly connected to the outer wall of the fourth pipe 24, the sleeve ring and the outer wall of the fourth pipe 24 are sealed, the plurality of expansion plates 32 can synchronously pass through the through holes 33 and enter the fourth pipe 24, after the plurality of expansion plates 32 completely enter the fourth pipe 24, the plurality of expansion plates 32 can be spliced and sealed with each other, the external air is reduced to enter the body 1, meanwhile, the gas escape in the body 1 is avoided, the turnover plate 34 can be automatically reset through the torsional spring connection, the through holes 33 can be sealed when the expansion plates 32 contract in the sleeve pipe 31, the gas is prevented from entering the sleeve pipe 31 and causing turbulence, the driving piece 363 can be a micro linear motor 95 directly purchased from the market, the connecting rod 361 and the driving piece 363 can conveniently drive the expansion plate 32 to enter and exit the through hole 33, so that the fourth tube 24 can be conveniently sealed, the change of temperature caused by the fact that external air enters the body 1 is prevented, and the purpose of energy conservation is achieved.

Referring to fig. 4 and 5, the sealing member includes an extension portion 351 disposed at one end of the flap 34, a first connection portion 352 disposed on the extension portion 351 and inclined, a second connection portion 353 connected to the first connection portion 352, a plurality of first protrusions 354 disposed on the second connection portion 353, and a first notch 355 disposed on the fourth tube 24 and engaged with the extension portion 351, wherein the extension portion 351 and the flap 34 are integrally formed.

Adopt above-mentioned scheme: by providing the extension 351, the first connection portion 352, the second connection portion 353, the first protrusion 354 and the first notch 355, the extension 351 can abut against one end of the through hole 33, the flap 34 can be prevented from being turned excessively, the first connection portion 352 and the second connection portion 353 can increase the contact area with the through hole 33, the first protrusion 354 and the first notch 355 can further increase the contact area between the extension 351 and the through hole 33, the sealing effect is improved, and gas is prevented from entering the sleeve 31.

Referring to fig. 6, a first concave portion 41 is disposed in the first notch 355 and is matched with the first convex portion 354, and a rubber pad 42 is disposed inside the first concave portion 41.

Adopt above-mentioned scheme: by providing the first concave portion 41 and the rubber pad 42, the first convex portion 354 can be inserted into the first concave portion 41, the contact area is further increased, and the rubber pad 42 can improve the sealing effect between the first convex portion 354 and the first concave portion 41, and simultaneously reduce the impact generated by the reset of the flap 34.

Referring to fig. 9, a strip-shaped second protrusion 51 is disposed on one side wall of the expansion plate 32, a second recess 52 matching with the second protrusion 51 is disposed on the other side wall of the expansion plate 32, and when the plurality of expansion plates 32 completely enter the fourth pipe 24, the adjacent second protrusion 51 fits with the second recess 52.

Adopt above-mentioned scheme: by providing the second convex portion 51 and the second concave portion 52, the contact area between the plurality of expansion plates 32 can be increased, and the sealing effect can be further improved.

Referring to fig. 4, the thermal insulation device includes an outer shell 61 disposed outside the intake duct 2, an inner shell 62 connected to the outer shell 61, a thermal insulation layer 63 disposed inside the outer shell 61, a first cavity 64 disposed between the thermal insulation layer 63 and the outer shell 61, and a second cavity 65 disposed between the inner shell 62 and the thermal insulation layer 63.

Adopt above-mentioned scheme: through setting up shell body 61, interior casing 62, insulating layer 63, first cavity 64 and second cavity 65, can improve the heat preservation effect of intake pipe 2, reduce outside heat and get into body 1, make the inside gas heat preservation of body 1 longer time, the air conditioner is when reopening, and the gas in the body 1 can directly discharge indoor, need not long-time start, reaches energy-conserving purpose.

Referring to fig. 7, a heat conducting plate 71 is disposed inside the first cavity 64 and on the heat insulating layer 63, a plurality of fins 72 are disposed on the heat conducting plate 71, and a plurality of heat conducting pins 73 tapered and extending into the second cavity 65 are disposed on the heat conducting plate 71.

Adopt above-mentioned scheme: through setting up heat-conducting plate 71, fin 72 and heat conduction needle 73, the one end volume that heat conduction needle 73 is close to second cavity 65 is bigger, and the inside heat of intake pipe 2 can conveniently be derived, and the difficult entering of external heat improves the heat preservation effect.

Referring to fig. 7 and 8, a cooling pipe 81 made of a heat conducting material and made of a closed material is disposed inside the second cavity 65, the cooling pipe 81 includes a condensation section 811 connected to the heat insulating layer 63, an evaporation section 812 connected to the inner shell 62, a third cavity 813 disposed inside the cooling pipe 81 and filled with a phase change cooling liquid, and a sintered wall 814 having a plurality of micro holes disposed inside the third cavity 813, and the evaporation section 812 is communicated with the condensation section 811.

Adopt above-mentioned scheme: through setting up cooling tube 81, condensation segment 811, evaporation zone 812, third cavity 813 and sintering wall 814, cooling tube 81 is whole to be made for the copper pipe that the heat conductivity is good, when the inside high temperature of fourth body 24, the phase transition coolant liquid in the evaporation zone 812 can evaporate, make atmospheric pressure grow, gasified coolant liquid can enter into condensation segment 811, the coolant liquid can liquefy again at condensation segment 811, and flow back to evaporation zone 812 through porous sintering wall 814, so relapse, the heat in the fourth body 24 can be absorbed at evaporation zone 812, and discharge through condensation segment 811, improve the heat preservation effect.

Referring to fig. 7, the inner casing 62 is provided with a heat transfer plate 82 connected to the evaporation section 812, and the heat transfer plate 82 is in contact with the intake pipe 2.

Adopt above-mentioned scheme: by providing the heat transfer plate 82, the contact area can be increased, and the heat in the fourth tube 24 can be absorbed in time, thereby further improving the heat preservation effect.

Example two

As shown in fig. 10 to 12, the other structure is not changed, and different from the first embodiment, the longitudinal section of the fourth tube 24 is circular, the sleeve 31 is provided with a plurality of extension plates 32 arranged in a circumferential manner, one side of each extension plate 32 is connected with a connecting rod 361, the sleeve 31 is internally provided with a guide groove 362 for the sliding of the connecting rod 361, the sleeve 31 is internally rotatably connected with a toothed ring 91, the inner side of the toothed ring 91 is provided with a plurality of ejecting parts 92 matched with the connecting rods 361, each ejecting part 92 comprises a first inclined part 93 and a second inclined part 94, the sleeve 31 is internally provided with a motor 95, an output shaft of the motor 95 is provided with a gear 96, the gear 96 is engaged with the toothed ring 91, and the guide groove 362 is internally provided with a spring 97 for returning the connecting rod 361; adopt above-mentioned scheme: through the cooperation that sets up expansion plate 32, connecting rod 361, guide slot 362, ring gear 91, top portion 92, first slope 93, second slope 94, motor 95, gear 96 and spring 97 and use, motor 95 drives gear 96 and rotates, and gear 96 drives ring gear 91 and rotates, and top portion 92 can push against connecting rod 361 when ring gear 91 rotates, makes things convenient for expansion plate 32's flexible.

EXAMPLE III

As shown in fig. 13 to 14, the other structure is not changed, and unlike the second embodiment, the knock-out portion 92 is located outside the ring gear 91, and the gear 96 is engaged with the inner ring of the ring gear 91; adopt above-mentioned scheme: through establishing in the outside of ring gear 91 top-opening portion 92, inside spring 97 can promote a plurality of expansion plates 32 and contract fourth body 24, when needs open fourth body 24, it can to drive ring gear 91 through motor 95 and rotate.

Example four

As shown in fig. 15, other structures are not changed, and different from the first embodiment, the telescopic plates 32 are obliquely arranged, when the plurality of telescopic plates 32 completely enter the inside of the fourth tube 24, the projection plane of the plurality of telescopic plates 32 inside the fourth tube 24 is the same as the longitudinal section of the fourth tube 24; adopt above-mentioned scheme: by arranging the inclined expansion plate 32, the expansion plate 32 can push the turning plate 34 away conveniently, and abrasion is reduced.

EXAMPLE five

As shown in fig. 4, other structures are not changed, and different from the first embodiment, the cross section of the guide groove 362 is T-shaped, and one end of the connecting rod 361 located inside the guide groove 362 is T-shaped; adopt above-mentioned scheme: by providing the guide groove 362 and the connecting bar 361 having a T-shaped cross section, the connecting bar 361 can be prevented from being separated from the inside of the guide groove 362, and the sliding process of the expansion plate 32 can be maintained stable.

The working principle of the invention is as follows:

when using, when central air conditioning closes, drive expansion plate 32 through driving piece 363 and connecting rod 361 and remove, make expansion plate 32 push open turn-over board 34 and enter into fourth body 24 inside, when expansion plate 32 enters into fourth body 24 inside completely, a plurality of expansion plates 32 can splice into a confined board, prevent outside air admission, when the inside heat of intake pipe 2 increases, the inside heat of intake pipe 2 can be discharged through heat transfer plate 82 and a plurality of cooling tube 81, keep intake pipe 2 and the inside constancy of temperature of body 1, reduce the influence of outside air and heat to the temperature in body 1, when central air conditioning reopens, the inside gas of body 1 can directly be carried indoorly, need not long-time start-up and guide, control a plurality of expansion plates 32 to reset afterwards, make central air conditioning keep normal use, reach energy-conserving purpose.

To sum up: this an energy-saving control device for central air conditioning system, through setting up body 1, intake pipe 2, adjusting device and heat preservation device's cooperation is used, can keep warm to the gas that gets into the outer machine of air conditioner, make outside air and heat can not get into the outer machine of air conditioner inside, prevent the gaseous loss of the outer machine of air conditioner inside, make the inside temperature of the outer machine of air conditioner remain stable, consumption when reducing the air conditioner start, it needs very long guide time to have solved current central air conditioner when the start, just can send into indoor with the wind of uniform temperature after the certain time, consumption when central air conditioner starts is great, the outer machine of air conditioner keeps warm the effect relatively poor, the problem that the gas temperature in the outer machine of air conditioner caused the influence easily by external air and heat.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an energy-saving control device for central air conditioning system, includes outer machine body of air conditioner (1), intake pipe (2) that link to each other with body (1), be used for controlling the adjusting device that intake pipe (2) admitted air and be used for stabilizing the heat preservation device of body (1) internal temperature, its characterized in that: the air inlet pipe (2) comprises a first pipe body (21) arranged in a flaring manner, a second pipe body (22) connected with the first pipe body (21), a third pipe body (23) connected with the second pipe body (22) and arranged in an inclined manner, and a fourth pipe body (24) connected with the other end of the third pipe body (23), wherein the fourth pipe body (24) is parallel to the second pipe body (22), and the longitudinal section of the fourth pipe body (24) is a regular polygon;

the adjusting device comprises a sleeve (31) arranged on the outer side of the fourth pipe body (24), a plurality of expansion plates (32) arranged inside the sleeve (31), a plurality of through holes (33) arranged on the fourth pipe body (24) and used for extending the expansion plates (32), turning plates (34) hinged inside the through holes (33), sealing parts used for closing the turning plates (34) and expansion parts used for controlling the expansion plates (32) to move, the turning plates (34) are connected with the fourth pipe body (24) through torsion springs, included angles between the two expansion plates (32) are the same, the expansion plates (32) are perpendicular to the fourth pipe body (24), and when the expansion plates (32) completely enter the fourth pipe body (24), longitudinal sections of the expansion plates (32) are the same as those of the fourth pipe body (24);

the telescopic component comprises a connecting rod (361) connected with the telescopic plate (32), a guide groove (362) parallel to the telescopic plate (32) and a driving piece (363) matched with the connecting rod (361), and the moving direction of the driving piece (363) is parallel to the telescopic plate (32).

2. An energy saving control apparatus for a central air conditioning system as set forth in claim 1, wherein: the sealing component comprises an extension part (351) arranged at one end of the turning plate (34), a first connecting part (352) arranged on the extension part (351) in an inclined mode, a second connecting part (353) connected with the first connecting part (352), a plurality of first protruding parts (354) arranged on the second connecting part (353) and a first notch (355) arranged on the fourth pipe body (24) and matched with the extension part (351), wherein the extension part (351) and the turning plate (34) are integrally formed.

3. An energy saving control apparatus for a central air conditioning system as set forth in claim 2, wherein: a first concave part (41) matched with the first convex part (354) is arranged in the first notch (355), and a rubber pad (42) is arranged on the inner side of the first concave part (41).

4. An energy saving control apparatus for a central air conditioning system as set forth in claim 3, wherein: be equipped with bar second convex part (51) on one side wall of expansion plate (32), be equipped with on another lateral wall of expansion plate (32) with second convex part (51) matched with second concave part (52), when a plurality of inside the complete entering of expansion plate (32) fourth body (24), adjacent second convex part (51) and second concave part (52) laminating.

5. An energy saving control apparatus for a central air conditioning system as set forth in claim 4, wherein: the heat preservation device comprises an outer shell (61) arranged on the outer side of the air inlet pipe (2), an inner shell (62) connected with the outer shell (61), a heat insulation layer (63) arranged inside the outer shell (61), a first cavity (64) arranged between the heat insulation layer (63) and the outer shell (61), and a second cavity (65) arranged between the inner shell (62) and the heat insulation layer (63).

6. An energy saving control apparatus for a central air conditioning system as set forth in claim 5, wherein: a heat-conducting plate (71) is arranged in the first cavity (64) and on the heat-insulating layer (63), a plurality of fins (72) are arranged on the heat-conducting plate (71), and a plurality of conical heat-conducting pins (73) extending into the second cavity (65) are arranged on the heat-conducting plate (71).

7. An energy saving control apparatus for a central air conditioning system as set forth in claim 6, wherein: the inside of second cavity (65) is equipped with the heat conduction material and makes confined cooling tube (81), cooling tube (81) include condensing section (811) that link to each other with insulating layer (63), evaporation zone (812) that link to each other with interior casing (62), locate inside and the packing of cooling tube (81) have third cavity (813) of phase transition coolant liquid and locate inside sintering wall (814) that have a plurality of small holes of third cavity (813), evaporation zone (812) and condensing section (811) intercommunication.

8. An energy saving control apparatus for a central air conditioning system as set forth in claim 7, wherein: and the inner shell (62) is provided with a heat transfer plate (82) connected with the evaporation section (812), and the heat transfer plate (82) is in contact with the air inlet pipe (2).