CN209159702U - Fresh air preheater for air-conditioner of train - Google Patents
Fresh air preheater for air-conditioner of train Download PDFInfo
- Publication number
- CN209159702U CN209159702U CN201821505826.3U CN201821505826U CN209159702U CN 209159702 U CN209159702 U CN 209159702U CN 201821505826 U CN201821505826 U CN 201821505826U CN 209159702 U CN209159702 U CN 209159702U
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- fresh air
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- 238000009423 ventilation Methods 0.000 claims abstract description 43
- 206010037660 Pyrexia Diseases 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 229920000742 Cotton Polymers 0.000 claims description 24
- 238000004140 cleaning Methods 0.000 claims description 12
- 230000030279 gene silencing Effects 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 9
- 238000013016 damping Methods 0.000 claims description 4
- 230000002745 absorbent Effects 0.000 claims description 2
- 239000002250 absorbent Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 230000017525 heat dissipation Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
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- Duct Arrangements (AREA)
Abstract
The utility model relates to Air Preheater Technology fields, and in particular to a kind of fresh air preheater for air-conditioner of train, comprising: fixed frame is fixed at fresh air system air outlet；Several fever tablets are arranged in the space of fixed frame enclosing, vertical with fixed frame and be fixed on fixed frame inner wall；Power supply module is fixed on fixed frame, is electrically connected with fever tablet；Cooling fin, it fits closely and is set to fever tablet side, including, shell, shell is flat and hollow cube structure, several ventilation ducts are provided through along its flat horizontal surface extending direction in shell, the extending direction of ventilation duct is parallel with fresh air system air-out direction, and ventilation duct both ends are respectively arranged with first end cover and second end cover.The utility model good heat dissipation effect, heat utilization ratio are high.
Description
Technical field
The utility model relates to Air Preheater Technology fields, and in particular to a kind of fresh air preheater for air-conditioner of train.
Background technique
To guarantee that passenger's health and journey are comfortable, fresh air is sent constantly into compartment to increase air flowing
Property, improve air quality.Season in severe winter, it is necessary to be preheated using fresh air of the heater to sucking, to improve temperature in compartment.
Existing ground air-conditioning heater for train is generally used as heater element using electrothermal tube or PTC element, the latter use it is safe and reliable,
Using when assembling structure be that PTC element two sides have an electrode band, have insulating layer and cooling fin on the outside of electrode band.
Existing cooling fin mostly uses greatly metal plate, and heat dissipation effect is poor, heat utilization ratio bottom.
Utility model content
The utility model provides a kind of fresh air preheater for air-conditioner of train, to provide a kind of good heat dissipation effect, heat utilization
The high fresh air preheater for air-conditioner of train of rate.
The utility model provides a kind of fresh air preheater for air-conditioner of train, comprising:
Fixed frame is fixed at fresh air system air outlet；
Several fever tablets are arranged in the space that the fixed frame encloses, vertical with the fixed frame and described in being fixed on
Fixed frame inner wall；
Power supply module is fixed on the fixed frame, is electrically connected with the fever tablet；
Cooling fin fits closely and is set to the fever tablet side, including, shell, the shell is flat and hollow
Cube structure, the shell is interior to be provided through several ventilation ducts, the extension side of the ventilation duct along its flat horizontal surface extending direction
To parallel with fresh air system air-out direction, the tube wall of the ventilation duct is in contact with the inner walls, the ventilation duct two
End is respectively arranged with first end cover and second end cover, and it is logical that the first end cover and the second end cover center are equipped with ventilation
Road is provided with tube wall cleaning device between the first end cover and the second end cover.
Preferably, the first end cover includes, the first pipe sleeve, both ends are equipped with opening, one end of first pipe sleeve from
Its internal axis position is extended to tube wall several equally distributed first connection sheets, the extension side of first connection sheet
To parallel with the first pipe sleeve axis, the other end inner wall of first pipe sleeve is provided with screw thread and the ventilation duct inwardly one
The screw thread of side pipe mouth outer wall setting is connected, and the first pipe sleeve shaft core position is provided with the first axle sleeve, connect with described first
Piece is fixedly connected, and is equipped with opening, other end closing towards one end of the ventilation duct.
Preferably, the second end cover includes, the second pipe sleeve, both ends are equipped with opening, one end of second pipe sleeve from
Its internal axis position is extended to tube wall several equally distributed second connection sheets, the extension side of second connection sheet
To parallel with the second pipe sleeve axis, the other end inner wall of second pipe sleeve is arranged and ventilation duct side nozzle outwardly
Outer wall is in close contact, and the second pipe sleeve shaft core position is provided with the second axle sleeve, is fixedly connected with second connection sheet,
Opening, other end closing are equipped with towards one end of the ventilation duct.
Preferably, tube wall cleaning device, including shaft are provided between the first end cover and the second end cover, institute
State shaft and be respectively arranged with paddle wheel fan close to the position of both side ends, including, impeller sleeve and outer ring, the impeller sleeve with
It is connected between the outer ring by blade, is connected between two outer rings by volute wall, outside the volute wall
Side is provided with bristle, and the both ends of the shaft is set in first axle sleeve and second axle sleeve.
Preferably, being provided with several thermally conductive sheets perpendicular to the ventilation duct in the shell.
Preferably, the side of second pipe sleeve outwardly is additionally provided with noise-decreasing device, comprising:
Silencing connection pipe, both ends outer wall are provided with screw thread, and one end inner wall is arranged outwardly for one end and second pipe sleeve
Screw thread be connected, the silencing connection pipe inner wall be equipped with sound absorbing layer, the sound absorbing layer include the first acoustical cotton layer, the second sound-absorbing
Cotton layer, the sound-absorbing aperture layer that is arranged among first acoustical cotton layer and second acoustical cotton layer are set in the sound-absorbing aperture layer
There are the first sound-absorbing hole array and the second sound-absorbing hole array, the first sound-absorbing hole array is described close to first acoustical cotton layer
Second sound-absorbing hole array is close to second acoustical cotton layer；
Muffler, the shell including rectangular box shape and the partition panel being arranged in the shell, the partition panel is along institute
The inner wall of shell is stated by left-to-right, is arranged alternatively up and down, the left side of the shell is equipped with air inlet, and right side is equipped with outlet air
Mouthful, the end of the partition panel is equipped with acoustic(al)absorbent, and the air inlet inner wall is provided with screw thread, another with the silencing connection pipe
End is threadedly coupled.
Preferably, the shell is from outside to inside successively by sheet-metal layers, damping sheet layer, vacuum splint layer, acoustical cotton plate
Layer and metal perforated plate layer composition.
The utility model provide it is a kind of using the shell with ventilation duct as the fresh air preheater for air-conditioner of train of cooling fin,
It improves cooling fin and flows through the contact area of air-flow, good heat dissipation effect, heat utilization ratio height.
Other features and advantages of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages can pass through
Structure specifically indicated in the written description, claims, and drawings is achieved and obtained.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is fresh air preheater for air-conditioner of train structural schematic diagram in the utility model one embodiment；
Fig. 2 is support frame structure diagram in the utility model one embodiment；
Fig. 3 is the second liquid receiver structural schematic diagram in the utility model one embodiment；
Fig. 4 is the second liquid receiver schematic layout pattern in the utility model one embodiment；
Fig. 5 is support frame structure diagram in the utility model one embodiment；
Fig. 6 is support frame top view in the utility model one embodiment；
Fig. 7 is pin shaft connection schematic diagram in the utility model one embodiment；
Specific embodiment
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
As depicted in figs. 1 and 2, the utility model embodiment provides a kind of fresh air preheater for air-conditioner of train, comprising:
Fixed frame 1 is fixed at fresh air system air outlet；
Several fever tablets 2 are arranged in the space that the fixed frame 1 encloses, vertical with the fixed frame 1 and be fixed on institute
State 1 inner wall of fixed frame；
Power supply module 3 is fixed on the fixed frame 1, is electrically connected with the fever tablet 2, in the present embodiment, hair
Backing 2 is made of the insulating layer on the outside of electrode band and PTC element or Electric radiant Heating Film and electrode band, is all made of prior art products,
Details are not described herein；
Cooling fin fits closely and is set to 2 side of fever tablet, including, shell 4, the shell 4 is flat and hollow
Cube structure, is provided through several ventilation ducts 5 along its flat horizontal surface extending direction in the shell 4, the ventilation duct 5 prolongs
Stretch that direction is parallel with fresh air system air-out direction, the tube wall of the ventilation duct 5 is in contact with 4 inner wall of shell, described logical
5 both ends of air hose are respectively arranged with first end cover 6 and second end cover 7,7 center of the first end cover 6 and the second end cover
It is equipped with vent passages.
The working principle of above-mentioned technical proposal are as follows:
When in use, the fresh air system being first turned in train, air-flow pass through first end from the blowout of fresh air system air outlet
Lid 6 enters ventilation duct 5, then blows out from second end cover 7, then by power supply module 3, powers to fever tablet 2, so that fever tablet 2
It begins to warm up, the heat of sending is directly passed to the ventilation duct 5 being in direct contact with it to flowing through inside it by 4 a part of shell
Air-flow heated, another part heat heats the air of enclosure interior, ventilation duct 5 is heated indirectly, some
Heat directly heats the air-flow flowed through between shell 4 and shell 4, to blow out hot wind.
Above-mentioned technical proposal has the beneficial effect that
The heat that the present embodiment can make full use of fever tablet 2 to issue is to the air-flow flowed through in ventilation duct 5 and flows through two shells
Air-flow between body 4 is heated, and is radiated compared to cooling fin, has been increased the contact area with air-flow, good heat dissipation effect improves
Heat utilization ratio.
As shown in Figures 2 to 5, in one embodiment, it is provided between the first end cover 6 and the second end cover 7
Tube wall cleaning device 8, the first end cover 6 include the first pipe sleeve 6-1, and both ends, which are equipped with, to be open, and the one of the first pipe sleeve 6-1
End is extended from its internal axis position to tube wall several equally distributed first connection sheet 6-2, first connection sheet
The extending direction of 6-2 is parallel with the first pipe sleeve 6-1 axis, and the other end inner wall of the first pipe sleeve 6-1 is provided with screw thread
It is connected with the screw thread of the ventilation duct 5 side nozzle outer wall setting inwardly, the first pipe sleeve 6-1 shaft core position is provided with the
One axle sleeve 6-3 is fixedly connected with the first connection sheet 6-2, is equipped with opening, the other end towards one end of the ventilation duct 5
Closing.
The second end cover 7 includes the second pipe sleeve 7-1, and both ends are equipped with opening, one end of the second pipe sleeve 7-1 from its
Internal axis position is extended to tube wall several equally distributed second connection sheet 7-2, and the second connection sheet 7-2's prolongs
Stretch that direction is parallel with the second pipe sleeve 7-1 axis, the other end inner wall of the second pipe sleeve 7-1 is arranged and the ventilation duct 5
Side nozzle outer wall outwardly is in close contact, and the second pipe sleeve 7-1 shaft core position is provided with the second axle sleeve 7-3, with described the
Two connection sheet 7-2 are fixedly connected, and are equipped with opening, other end closing towards one end of the ventilation duct 5.
The tube wall cleaning device 8, including shaft 8-1, the shaft 8-1 are respectively arranged with close to the position of both side ends
Paddle wheel fan 8-2, including, impeller sleeve 8-21 and outer ring 8-22 lead between the impeller sleeve 8-21 and the outer ring 8-22
It crosses blade 8-23 to be connected, be connected between two outer ring 8-22 by volute wall 8-24, the volute wall 8-24
Outside is provided with bristle 8-25, and the both ends the shaft 8-1 are set in the first axle sleeve 6-3 and the second axle sleeve 7-3.
The ventilation duct 5 is provided with several thermally conductive sheets 9 in the shell 4.
The working principle of above-mentioned technical proposal are as follows: the air-flow blown out by fresh air system is entered logical by first sleeve 6-1
In air hose 5, blade 8-23 is blown, impeller axle sleeve 8-21 is rotated on shaft 8-1, while outer ring 8-22 being driven to rotate, after
And volute wall 8-24 is driven to rotate, by the bristle 8-25 being arranged on the outside of volute wall 8-24,5 tube wall of ventilation duct is carried out clear
It is clean.
Above-mentioned technical proposal has the beneficial effect that
The air-flow that the present embodiment is blown out by fresh air system drives tube wall cleaning device 8, cleans to tube wall, keeps
Unimpeded, the extension maintenance period of ventilation duct 5, avoids for a long time in use, the blocking outlet air of cooling fin air duct is unsmooth, and wind-force reduces,
Even result in heater element heat dissipation bad the case where leading to damage.
The first connection sheet 6-2's and the second connection sheet 7-2 sets in the present embodiment the first pipe sleeve 6-1 and the second pipe sleeve 7-1
It sets, avoids to enter in ventilation duct 5 compared with bigger material and cause to block, play the role of primary filtration barrier.
The present embodiment second end cover 7 is directly socketed with ventilation duct 5, easy to maintain, convenient for the disassembly of tube wall cleaning device 8
Cleaning.
The present embodiment blows blade 8-23 rotate driving tube wall cleaning device 8 by air-flow and runs, and does not need extra power,
Structure is simple, energy saving.
The present embodiment bristle 8-25 is arranged on volute wall 8-24, and the setting of volute wall 8-24 mitigates compared to roller
Whole construction weight, while being conducive to dirt under the action of spiral, it is discharged, is convenient to clean to outlet.
As shown in Figure 6 and Figure 7, in one embodiment, the side of the second pipe sleeve 7-1 outwardly is additionally provided with noise abatement dress
Set 10, comprising:
Silencing connection pipe 10-1, both ends outer wall are provided with screw thread, and one end and the second pipe sleeve 7-1 are outwardly in one end
The screw thread of wall setting is connected, and the silencing connection pipe 10-1 inner wall is equipped with sound absorbing layer, and the sound absorbing layer includes the first acoustical cotton
Layer 10-11, the second acoustical cotton layer 10-12, it is arranged in the first acoustical cotton layer 10-11 and the second acoustical cotton layer 10-12
Intermediate sound-absorbing aperture layer 10-13, the sound-absorbing aperture layer 10-13 is equipped with the first sound-absorbing hole array 10-14 and the second sound-absorption hole battle array
10-15 is arranged, the first sound-absorbing hole array 10-14 is close to the first acoustical cotton layer 10-11, the second sound-absorbing hole array
10-15 is close to the second acoustical cotton layer 10-12；
Muffler 10-2, shell 10-21 including rectangular box shape and the partition panel being arranged in the shell 10-21
10-22, the partition panel 10-22 along the shell 10-21 inner wall by left-to-right, be arranged alternatively up and down, the shell 10-21
Left side be equipped with air inlet 10-23, right side is equipped with air outlet 10-24, and the end of the partition panel 10-22 is equipped with sound-absorbing
Body 10-25, the air inlet 10-23 inner wall are provided with screw thread, are threadedly coupled with the other end of the silencing connection pipe 10-1.
The shell 10-21 is from outside to inside successively by sheet-metal layers 10-211, damping sheet layer 10-212, vacuum splint layer
10-213, acoustical cotton plate layer 10-214 and metal perforated plate layer 10-215 composition, in the present embodiment, partition panel 10-22, metal plate
The material of layer 10-211 and metal perforated plate layer 10-215 is galvanized steel plain sheet, and the material of damping sheet layer 10-212 is rubber, sound-absorbing
The material of body 10-25 is acoustical cotton.
The working principle and beneficial effect of above-mentioned technical proposal are as follows: air-flow blows over the generation of ventilation duct 5 in use
The noise that noise and 5 inner tubal wall cleaning device 8 of ventilation duct cleaning tube wall generate, first penetrates silencing connection pipe 10-1, by the
One acoustical cotton layer 10-11 and the second acoustical cotton layer 10-12 absorb partial noise, while the sound-absorbing aperture layer 10-13 is equipped with the
One sound-absorbing hole array 10-14 and the second sound-absorbing hole array 10-15, this structure can reinforce the sound-absorbing effect of sound absorbing layer, and reduction is made an uproar
Sound then enters through in muffler 10-2, by being arranged alternately partition panel 10-22 in shell 10-21, so that air flows through
When crossing inside muffler 10-2, constantly by compression-expansion, recompression, so that the kinetic energy of air stream is converted into thermal energy, reduction is played
By setting multilayered structure for silencer casing 10-21 while noise, when can pass the air stream over muffler 10-2, most
The vibration that limits reduce shell 10-21 improves the sound-absorbing effect of muffler to reduce noise transmission.
The present embodiment blows over 5 inner tubal wall of noise and ventilation duct of the generation of ventilation duct 5 by two-stage silencing means to air-flow
Cleaning device 8 cleans the noise that tube wall generates and is absorbed, and reduces the noise level in train, improves the comfortable of passenger
Degree.
Obviously, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in the art
Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.
Claims (7)
1. fresh air preheater for air-conditioner of train characterized by comprising
Fixed frame (1), is fixed at fresh air system air outlet；
Several fever tablets (2) are arranged in the space that the fixed frame (1) encloses, vertical with the fixed frame (1) and be fixed on
Fixed frame (1) inner wall；
Power supply module (3) is fixed on the fixed frame (1), is electrically connected with the fever tablet (2)；
Cooling fin fits closely and is set to the fever tablet (2) side, including, shell (4), the shell (4) is flat and empty
The cube structure of the heart, the shell (4) is interior to be provided through several ventilation ducts (5), the ventilation along its flat horizontal surface extending direction
The extending direction for managing (5) is parallel with fresh air system air-out direction, the tube wall and the shell (4) inner wall of the ventilation duct (5)
Be in contact, ventilation duct (5) both ends are respectively arranged with first end cover (6) and second end cover (7), the first end cover (6) and
Second end cover (7) center is equipped with vent passages.
2. fresh air preheater for air-conditioner of train according to claim 1, which is characterized in that the first end cover (6) includes
One pipe sleeve (6-1), both ends are equipped with opening, and one end of first pipe sleeve (6-1) is set from its internal axis position to tube wall extension
It is equipped with several equally distributed first connection sheets (6-2), the extending direction and first pipe sleeve of first connection sheet (6-2)
(6-1) axis is parallel, and the other end inner wall of first pipe sleeve (6-1) is provided with screw thread and the ventilation duct (5) side inwardly
The screw thread of nozzle outer wall setting is connected, and the first pipe sleeve (6-1) shaft core position is provided with the first axle sleeve (6-3), and described
First connection sheet (6-2) is fixedly connected, and is equipped with opening, other end closing towards one end of the ventilation duct (5).
3. fresh air preheater for air-conditioner of train according to claim 2, which is characterized in that the second end cover (7) includes
Two pipe sleeves (7-1), both ends are equipped with opening, and one end of second pipe sleeve (7-1) is set from its internal axis position to tube wall extension
It is equipped with several equally distributed second connection sheets (7-2), the extending direction and second pipe sleeve of second connection sheet (7-2)
(7-1) axis is parallel, the other end inner wall of second pipe sleeve (7-1) be arranged with outside the ventilation duct (5) outwardly side nozzle
Wall is in close contact, and the second pipe sleeve (7-1) shaft core position is provided with the second axle sleeve (7-3), with the second connection sheet (7-
2) it is fixedly connected, is equipped with opening, other end closing towards one end of the ventilation duct (5).
4. fresh air preheater for air-conditioner of train according to claim 3, which is characterized in that the first end cover (6) and described
It is provided between second end cover (7) tube wall cleaning device (8), including shaft (8-1), the shaft (8-1) is close to both side ends
Position be respectively arranged with paddle wheel fan (8-2), including, impeller sleeve (8-21) and outer ring (8-22), the impeller sleeve (8-
21) it is connected between the outer ring (8-22) by blade (8-23), passes through helix tube between two outer rings (8-22)
Wall (8-24) is connected, and is provided with bristle (8-25) on the outside of the volute wall (8-24), shaft (8-1) both ends are set to
In first axle sleeve (6-3) and second axle sleeve (7-3).
5. fresh air preheater for air-conditioner of train according to claim 1, which is characterized in that perpendicular to institute in the shell (4)
It states ventilation duct (5) and is provided with several thermally conductive sheets (9).
6. fresh air preheater for air-conditioner of train according to claim 3, which is characterized in that second pipe sleeve (7-1) is outwardly
Side be additionally provided with noise-decreasing device (10), comprising:
Silencing connection pipe (10-1), both ends outer wall are provided with screw thread, and one end and second pipe sleeve (7-1) are outwardly in one end
The screw thread of wall setting is connected, and silencing connection pipe (10-1) inner wall is equipped with sound absorbing layer, and the sound absorbing layer includes the first sound-absorbing
Cotton layer (10-11), is arranged in first acoustical cotton layer (10-11) and second acoustical cotton the second acoustical cotton layer (10-12)
The intermediate sound-absorbing aperture layer (10-13) of layer (10-12), the sound-absorbing aperture layer (10-13) are equipped with the first sound-absorbing hole array (10-14)
With the second sound-absorbing hole array (10-15), the first sound-absorbing hole array (10-14) close to first acoustical cotton layer (10-11),
The second sound-absorbing hole array (10-15) is close to second acoustical cotton layer (10-12)；
Muffler (10-2), the partition panel of shell (10-21) and setting in the shell (10-21) including rectangular box shape
(10-22), the partition panel (10-22) along the shell (10-21) inner wall by left-to-right, be arranged alternatively up and down, it is described outer
The left side of shell (10-21) is equipped with air inlet (10-23), and right side is equipped with air outlet (10-24), the partition panel (10-
22) end is equipped with acoustic(al)absorbent (10-25), and air inlet (10-23) inner wall is provided with screw thread, with the silencing connection pipe
The other end of (10-1) is threadedly coupled.
7. fresh air preheater for air-conditioner of train according to claim 6, which is characterized in that the shell (10-21) by outside to
Inside successively by sheet-metal layers (10-211), damping sheet layer (10-212), vacuum splint layer (10-213), acoustical cotton plate layer (10-
214) it is formed with metal perforated plate layer (10-215).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821505826.3U CN209159702U (en) | 2018-09-14 | 2018-09-14 | Fresh air preheater for air-conditioner of train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821505826.3U CN209159702U (en) | 2018-09-14 | 2018-09-14 | Fresh air preheater for air-conditioner of train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209159702U true CN209159702U (en) | 2019-07-26 |
Family
ID=67331301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821505826.3U Expired - Fee Related CN209159702U (en) | 2018-09-14 | 2018-09-14 | Fresh air preheater for air-conditioner of train |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209159702U (en) |
-
2018
- 2018-09-14 CN CN201821505826.3U patent/CN209159702U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190726 |
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| CF01 | Termination of patent right due to non-payment of annual fee |