CN218722064U - Fresh air adjusting device and air conditioning system - Google Patents
Fresh air adjusting device and air conditioning system Download PDFInfo
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- CN218722064U CN218722064U CN202222661886.7U CN202222661886U CN218722064U CN 218722064 U CN218722064 U CN 218722064U CN 202222661886 U CN202222661886 U CN 202222661886U CN 218722064 U CN218722064 U CN 218722064U
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 23
- 238000005192 partition Methods 0.000 claims abstract description 18
- 230000003068 static effect Effects 0.000 claims abstract description 11
- 229910003460 diamond Inorganic materials 0.000 claims description 7
- 239000010432 diamond Substances 0.000 claims description 7
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000008676 import Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model discloses a new trend adjusting device and air conditioning system. The fresh air adjusting device comprises a shell and cores, wherein the inner space of the shell is divided into an upper air channel, a lower air channel and a middle space, a first core and a second core which are in a prism shape are arranged in the middle space side by side, one edge adjacent to the two cores is connected with a partition plate and mutually separated, the upper edge and the lower edge of the two cores are respectively connected with a bottom plate of the upper air channel and a top plate of the lower air channel, and the fresh air and return air serial-parallel air channels of the first core and the second core are formed by the shell, the partition plate, the upper air channel, the lower air channel and a control air valve. The utility model discloses can carry out accurate regulation to the amount of wind, the static pressure of new fan unit according to the demand, reduce the windage of the whole size of unit, core simultaneously, and then reduce the energy consumption.
Description
Technical Field
The utility model relates to an air conditioning technology field especially relates to a fresh air adjusting device and air conditioning system that heat transfer core can connect in series-parallel.
Background
The central air conditioner can control the temperature and the humidity of indoor air, and the comfort level of indoor workers is greatly improved. In order to ensure the quality of air, fresh air with a certain proportion needs to be introduced, and particularly, the requirement for introducing the fresh air into the central air conditioner is increased rapidly along with the occurrence of epidemic situations. The conventional large-scale fixed-frequency fresh air handling unit has the problem that air volume and static pressure cannot be adjusted, and when the static pressure in the unit is reduced too much, the power consumption of the whole machine is larger. In addition, the large fresh air handling unit is too large in height and insufficient in hoisting and mounting space.
SUMMERY OF THE UTILITY MODEL
The utility model provides a but parallelly connected new trend adjusting device of heat transfer core series-parallel and air conditioning system to solve the amount of wind that current fresh air handling unit exists, static pressure can't adjust, inside static pressure drops too big, the complete machine consumption is big, and the big technical problem of erection dimension.
The utility model provides a fresh air adjusting device, including casing and core, casing inner space falls into upper air duct, lower floor's wind channel and middle space, be equipped with first core and the second core of rhombus column in the middle space side by side, a rhombus limit that two cores are adjacent is connected with a baffle and separates each other, two upper and lower rhombus limits of two cores respectively with the bottom plate in upper air duct with the roof in lower floor's wind channel is connected, constitutes through baffle, upper air duct, lower floor's wind channel and control blast gate first core with the series-parallel wind channel of second core new trend and return air.
The control air valve comprises a first air valve communicated with the return air inlet of the upper air duct and the return air inlet of the first core; the second air valve is communicated with the fresh air inlet of the upper air channel and the fresh air inlet of the second core body; the third air valve is communicated with the second core body return air outlet to the first core body return air inlet; the fourth air valve is communicated with the first core fresh air outlet to the second core fresh air inlet; the fifth air valve is communicated with the second core body return air outlet to the lower layer air channel return air, and the sixth air valve is communicated with the first core body fresh air outlet to the lower layer air channel fresh air.
Preferably, the upper air duct and the lower air duct are internally provided with bent plates for forming an air inlet duct and an air outlet duct for fresh air and return air, and the bent plates comprise a middle flat plate, and a first flat plate and a second flat plate which are reversely and vertically bent from two ends of the middle flat plate.
Preferably, the first air valve and the second air valve are arranged on a bottom plate of the upper air duct and located on two sides of the partition plate.
Preferably, the third air valve is arranged at the upper part of the partition plate, and the fourth air valve is arranged at the lower part of the partition plate.
Preferably, the fifth air valve and the sixth air valve are arranged on a top plate of the lower air duct and located on two sides of the partition plate.
In the parallel mode of the first core body and the second core body, the first air valve, the second air valve, the fifth air valve and the second air valve are opened, and the third air valve and the fourth air valve are closed; in the series mode of the first core and the second core, the first air valve, the second air valve, the fifth air valve and the sixth air valve are closed, and the third air valve and the fourth air valve are opened.
Preferably, the air volume and the static pressure can be adjusted by adjusting the opening size of the control damper in the series-parallel mode of the first core and the second core.
The utility model provides a new trend adjusting device is still including setting up a plurality of infrared detection instruments that are used for surveying human quantity and position in indoor different regions.
The utility model provides a new trend adjusting device is still including setting up a plurality of COs in indoor different regions 2 And a concentration detector.
And the two ends of the fresh air adjusting device are respectively communicated with the inlet and outlet pipelines of fresh air and return air. And fans are arranged in the inlet and outlet pipelines of the fresh air and the return air.
The utility model also provides an air conditioning system, it includes above-mentioned new trend adjusting device.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses adopt bent plate wind channel structural design in upper and lower layer wind channel, form the series-parallel operation mode in the heat transfer core in new fan unit, the control is joined to the branch line in the core internal air flow path separation, upper and lower layer wind channel, realizes that amount of wind, static pressure can be according to the cascaded regulation of demand.
2. The utility model discloses a heat transfer core cluster parallel structure arranges, reduces built-in pressure loss by a wide margin, reduces the size of unit, makes the unit hoist and mount space rich enough.
3. The utility model discloses a core and upper and lower layer wind channel doublestage wind channel control scheme have realized the demand that the accurate control new trend was supplied with, and the complete machine consumption reduces.
Drawings
The invention is described in detail below with reference to the following figures and specific embodiments, wherein:
fig. 1 is a schematic perspective view of a fresh air adjusting device according to the present invention;
FIG. 2 is a schematic cross-sectional view of the fresh air conditioning device of FIG. 1;
FIG. 3 is a schematic view of the internal structure of the fresh air conditioning device;
FIG. 4 is a schematic view showing the flow direction of fresh air in the parallel operation mode of two heat exchange cores;
FIG. 5 is a schematic view of the return air flow direction in the parallel operation mode of two heat exchange cores;
FIG. 6 is a schematic view of the flow direction of fresh air in the series operation mode of two heat exchange cores;
FIG. 7 is a schematic view of the flow direction of return air in the series operation mode of two heat exchange cores;
fig. 8 is a control flow chart of the fresh air adjusting device of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is described in detail with reference to the accompanying drawings and embodiments. It should be understood that the following specific examples are only for illustrating the present invention and are not to be construed as limiting the present invention.
The utility model discloses a heat transfer core that designs side by side combines the structural design in upper and lower floor's wind channel to cooperation control blast gate makes heat transfer core wind channel can freely switch into the series-parallel mode, realizes heat transfer core amount of wind, the cascaded regulation of static pressure, reaches the accurate regulation of new trend supply.
As shown in fig. 1 to 3, the utility model provides a fresh air adjusting device includes casing and core, and casing inner space falls into upper air duct 1, lower floor's wind channel 2 and mid space 3. The first core 4 and the second core 5 in a prism shape are arranged in the middle space side by side. Seen from the cross section, two vertexes of the two cores are in the vertical direction, the other two vertexes are in the horizontal direction, the horizontal diamond edges adjacent to the two cores are connected with a vertical partition plate 6, the middle space is divided into a left side and a right side, the horizontal diamond edges far away from the two cores are connected with the shell, the upper diamond edges and the lower diamond edges in the vertical direction of the two cores are respectively connected with the bottom plate of the upper air duct 1 and the top plate of the lower air duct 2, and the serial and parallel air ducts for fresh air and return air of the first core and the second core are formed through the shell, the partition plate, the upper air duct, the lower air duct and the control air valve.
The utility model provides an among the fresh air adjusting device, whole wind channel structure divide into upper, middle and lower three-layer wind channel, is the upper wind channel that upper strata bent plate constitutes, middle cluster parallel core wind channel and the lower floor's wind channel that lower floor bent plate constitutes respectively.
As shown in fig. 4 to 7, a bending plate 13 is disposed in each of the upper air duct 1 and the lower air duct 2, the bending plate includes a middle plate and a first plate and a second plate bent from two ends of the middle plate in opposite directions, and the bending plate and the housing in the upper air duct and the lower air duct form a fresh air channel and a return air channel.
The control air valve comprises a first air valve 7 and a second air valve 8, wherein the first air valve 7 is communicated with an upper air channel return air inlet and a first core return air inlet, the second air valve 8 is communicated with an upper air channel fresh air inlet and a second core fresh air inlet, and the first air valve 7 and the second air valve 8 are arranged on the bottom plate of the upper air channel 1 and are positioned on two sides of the partition plate 6; a third air valve 9 for communicating the second core body return air outlet with the first core body return air inlet, and a fourth air valve 10 for communicating the first core body fresh air outlet with the second core body fresh air inlet, wherein the third air valve 9 is arranged at the upper part of the partition plate 6, and the fourth air valve 10 is arranged at the lower part of the partition plate 6; the fifth air valve 11 for communicating the second core body return air outlet with the lower air channel return air and the sixth air valve 12 for communicating the first core body fresh air outlet with the lower air channel fresh air are arranged on the top plate of the lower air channel 2 and located on two sides of the partition plate 6. Through controlling the air valves, the switching of the series-parallel air channels can be realized when the first core and the second core exchange heat completely.
The both ends of new trend adjusting device are respectively with the import and export pipeline intercommunication of new trend and return air, and in the embodiment that fig. 1 shows, new trend import A1 and return air export B2 set up on the left side, and new trend export A2 and return air import B1 set up on the right, all are equipped with the fan in the import and export pipeline.
In the first and second core parallel mode shown in fig. 4 and 5, the first damper 7, the second damper 8, the fifth damper 11, and the second damper 12 are opened, and the third damper 9 and the fourth damper 10 are closed. The first air valve 7 is a return air inlet of the first core 4, part of return air directly flows to a return air inlet of the second core, and part of return air enters the return air inlet of the first core through the upper air duct and the first air valve 7. The second air valve 8 is a fresh air inlet of the second core body 5, part of fresh air directly flows to the fresh air inlet of the first core body, and part of fresh air enters the fresh air inlet of the second core body through the upper air duct and the second air valve. The fifth air valve 11 is a return air outlet of the second core 5, and return air flowing out of the second core enters the lower air duct through the fifth air valve and then is discharged into the return air duct together with the return air from the return air outlet of the first core, which is in the direction of B2 in fig. 5. The sixth air valve 12 is a fresh air outlet of the first core 4, and fresh air discharged by the first core enters fresh air in the lower air duct, and then is sent into a fresh air pipeline in the A2 direction together with fresh air discharged by the second core through the fresh air outlet, and then enters the indoor space. The third and fourth dampers 9, 10 are closed in the parallel mode.
In the first and second core series mode shown in fig. 6 and 7, the first, second, fifth, and sixth dampers 7, 8, 11, and 12 are closed. The third air valve 9 and the fourth air valve 10 are opened, at the moment, the third air valve 9 is communicated with the return air outlet of the second core body and the return air inlet of the first core body, and the fourth air valve 10 is communicated with the fresh air outlet of the first core body 4 and the fresh air inlet of the second core body 5.
In the series-parallel mode of the first core and the second core, the air quantity and the static pressure can be adjusted by adjusting the opening size of the control air valve.
The utility model provides a new trend adjusting device is still including setting up a plurality of infrared detection instruments and a plurality of CO that are used for surveying human quantity, position in indoor different regions 2 And a concentration detector.
In the control method of the fresh air adjusting device provided by the utility model, the fresh air adjusting device works as indoor CO 2 When the average value of the concentration is in a comfortable concentration threshold interval and the demand of indoor initial personnel on fresh air is less than or equal to a fresh air volume threshold, controlling the first core and the second core to enter a series operation mode; and when the demand of initial personnel on fresh air in the space is greater than the fresh air volume threshold value, controlling the first core body and the second core body to enter a parallel operation mode.
Fig. 8 is a flow chart of the dual-stage air duct control of the present invention, which includes the following steps:
step 1: when the unit is started, firstly, the indoor infrared detector and CO are started 2 A concentration detector:
(1) determining the number n of people in the space and the fresh air demand Q, wherein Q = nB; wherein B is the fresh air demand of each person, and the trade has the per-capita fresh air volume parameter to different occasions.
(2) Obtaining CO everywhere in the room 2 Taking an average value eta i of the concentration;
step 2: judging the current CO 2 Whether the average value eta i is in a comfortable concentration threshold interval (eta a, eta b) or not, namely eta a is not less than eta i but not more than eta b;
(1) if not, opening the first air valve 7, the second air valve 8, the fifth air valve 11 and the sixth air valve 12, starting the fan to run for m minutes, and returning to the step 1;
(2) if yes, further judging the size of the calculated current fresh air demand Q and a set fresh air threshold value A;
and step 3: when the fresh air demand Q is less than or equal to a set fresh air volume threshold value A, Q is less than or equal to A, and a core body series operation mode is entered; and when the fresh air demand Q is larger than a set fresh air threshold value A, Q is larger than A, and the core body parallel operation mode is entered.
In the series operating mode, the following steps are carried out:
and 4, step 4: opening one half of the third air valve 9 and the fourth air valve 10, recording the increased opening amount Si, and obtaining CO after starting the fan to operate for m minutes 2 Concentration, calculating CO 2 The average value of the concentration η ii;
and 5: judging the current CO 2 Average of concentration and last CO 2 Whether the absolute value of the difference in the mean values of concentrations is less than or equal to the difference delta | η ii- η i ≦ delta, if yes, returning to step 1 after maintaining running for N minutes; if not, further judging the two CO flows before and after 2 A change in the average concentration value;
step 6: when the current CO is 2 The average value of the concentration eta ii is more than the last CO 2 When the average value of the concentration eta i is larger than eta i, increasing one half of the unopened part of the third air valve 9 and the fourth air valve 10, recording the increased opening Sa, starting the fan to run for m minutes, and returning to the step 1;
when the current CO is 2 The average value of the concentration eta ii is less than or equal to the last CO 2 When the average value of the concentration eta i is less than or equal to eta i, reducing one half of the last opening part of the third air valve 9 and the fourth air valve 10, recording the increased opening Sa, starting the fan to operate for m minutes, and returning to the step 1.
In the parallel operating mode, the following steps are carried out:
step (ii) of4': opening one half of the first air valve 7, the second air valve 8, the fifth air valve 11 and the sixth air valve 12, recording the increased opening amount Si, starting the fan to operate for m minutes, and acquiring CO 2 Concentration, taking CO 2 The average value of the concentration η ii;
step 5' judging the current CO 2 Average of concentration and last CO 2 Whether the absolute value of the difference of the average values of the concentrations is less than or equal to the difference delta, and if so, the operation is maintained for N minutes and then the step 1 is returned to; if not, further judging the two CO before and after 2 A change in the average concentration value;
step 6' when the current CO 2 The average value of the concentration is larger than the last CO 2 When the concentration is average, eta ii is larger than eta i, increasing one half of unopened parts of the first air valve 7, the second air valve 8, the fifth air valve 11 and the sixth air valve 12, recording the increased opening Sa, starting the fan to operate for m minutes, and returning to the step 1;
when the current CO is 2 The average value of the concentration is less than or equal to the last CO 2 When the concentration is average, eta ii is less than eta i, the first air valve 7, the second air valve 8, the fifth air valve 11 and the sixth air valve 12 are reduced by one half of the last opening part, the reduced opening amount Sb is recorded, and the fan is started to run for m minutes and then returns to the step 1.
The utility model provides a fresh air adjusting device and a control method, which combines a two-stage air channel control method to realize the accurate adjustment of the air quantity and the static pressure of a fresh air handling unit according to the requirement through an upper air channel, a lower air channel and a series-parallel core air channel structure; meanwhile, the wind resistance of the core body of the unit is reduced, so that the energy consumption is reduced, and the effect is more obvious when the specification of the whole unit is larger; in addition, two cores set up side by side, have reduced fresh air handling unit's size, the installation of being convenient for.
The foregoing is only illustrative of the present invention. It should be understood that any modifications, equivalents and changes made within the spirit and framework of the inventive concept are intended to be included within the scope of the invention.
Claims (13)
1. The fresh air adjusting device comprises a shell and cores and is characterized in that the inner space of the shell is divided into an upper air duct, a lower air duct and a middle space, a first core and a second core are arranged in the middle space side by side, a diamond edge adjacent to the two cores is connected with a vertical partition plate and mutually separated, the upper diamond edge and the lower diamond edge of the two cores are respectively connected with a bottom plate of the upper air duct and a top plate of the lower air duct, and the fresh air and return air series-parallel air ducts of the first core and the second core are formed by the shell, the partition plate, the upper air duct, the lower air duct and a control air valve.
2. The fresh air conditioning device as claimed in claim 1, wherein the upper duct and the lower duct are provided with bent plates for forming the inlet and outlet ducts for the fresh air and the return air, and the bent plates include a middle plate, and a first plate and a second plate bent perpendicularly from opposite ends of the middle plate.
3. The fresh air conditioning device as claimed in claim 1, wherein the control air valve comprises a first air valve for communicating the upper air duct return air with the first core return air inlet; the second air valve is communicated with the fresh air inlet of the upper air channel and the fresh air inlet of the second core body; the third air valve is communicated with the second core body return air outlet to the first core body return air inlet; the fourth air valve is communicated with the first core fresh air outlet and the second core fresh air inlet; the fifth air valve is communicated with the second core body return air outlet to the lower layer air channel return air, and the sixth air valve is communicated with the first core body fresh air outlet to the lower layer air channel fresh air.
4. The fresh air conditioning device as claimed in claim 3, wherein the first air valve and the second air valve are disposed on the bottom plate of the upper air duct and located on both sides of the partition plate.
5. The fresh air conditioning device as claimed in claim 3, wherein the third air valve is disposed at an upper portion of the partition plate, and the fourth air valve is disposed at a lower portion of the partition plate.
6. The fresh air conditioning device as claimed in claim 3, wherein the fifth air valve and the sixth air valve are disposed on the top plate of the lower air duct and located on two sides of the partition plate.
7. The fresh air conditioning device of claim 3 wherein in the first core and the second core parallel mode, the first damper, the second damper, the fifth damper, and the sixth damper are open, and the third damper and the fourth damper are closed; in the series mode of the first core body and the second core body, the first air valve, the second air valve, the fifth air valve and the sixth air valve are closed, and the third air valve and the fourth air valve are opened.
8. The fresh air conditioning device as claimed in claim 7, wherein the air volume and the static pressure can be adjusted by adjusting the opening size of the control damper in both the series-parallel mode of the first core and the second core.
9. The fresh air conditioning device as claimed in claim 1, further comprising a plurality of infrared detectors disposed in different regions of the room for detecting the number and location of human bodies.
10. The fresh air conditioning device as recited in claim 1 further comprising a plurality of CO's disposed in different areas of the room 2 And a concentration detector.
11. The fresh air conditioning device of claim 1 wherein the fresh air conditioning device is in communication with the fresh air and return air inlet and outlet ducts, respectively.
12. The fresh air conditioning device as claimed in claim 11, wherein fans are disposed in the inlet and outlet ducts of the fresh air and the return air.
13. An air conditioning system, characterized in that it comprises a fresh air conditioning device according to any of claims 1 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222661886.7U CN218722064U (en) | 2022-10-10 | 2022-10-10 | Fresh air adjusting device and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222661886.7U CN218722064U (en) | 2022-10-10 | 2022-10-10 | Fresh air adjusting device and air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218722064U true CN218722064U (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222661886.7U Active CN218722064U (en) | 2022-10-10 | 2022-10-10 | Fresh air adjusting device and air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218722064U (en) |
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2022
- 2022-10-10 CN CN202222661886.7U patent/CN218722064U/en active Active
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