CN202608783U - Ventilation system for air conditioning units of subway vehicle - Google Patents
Ventilation system for air conditioning units of subway vehicle Download PDFInfo
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- CN202608783U CN202608783U CN 201220155538 CN201220155538U CN202608783U CN 202608783 U CN202608783 U CN 202608783U CN 201220155538 CN201220155538 CN 201220155538 CN 201220155538 U CN201220155538 U CN 201220155538U CN 202608783 U CN202608783 U CN 202608783U
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Abstract
The utility model relates to a ventilation system for air conditioning units of a subway vehicle. Each carriage is provided with one air conditioning unit at least; each air conditioning unit comprises an indoor unit and an outdoor unit; the indoor units are connected with the outdoor units through refrigerant pipelines to form refrigerating cycle loops; the indoor units are arranged above a top plate in the vehicle; the outdoor units are arranged at the bottom of the vehicle; and air outlets and air inlets of the indoor units are communicated with air supply outlets and return air outlets in the vehicle through an air supply duct and a return air duct. The air conditioning units adopt split structures; the outdoor units are arranged at the bottom of a vehicle body; the indoor units are arranged above the top plate in the vehicle; the air supply duct and the return air duct are arranged at the top of the vehicle, so that the weights of the air ducts are reduced; the higher requirement of the light weight of the vehicle is met, and the air distribution in the vehicle is uniform.
Description
Technical field
This practicality newly relates to a kind of air-conditioning duct system, and particularly a kind of air-conditioning unit ventilation system that is used on the guideway vehicles such as subway belongs to guideway vehicle manufacturing technology field.
Background technology
Railcar is to emerge to a kind of vehicle newly developed that requires of city rail traffic in order to satisfy China's regional economy fast development and group of cities; Have characteristics such as big, the quick start-stop of passenger capacity; Speed still is that project organization all has bigger difference with vehicle in the past; Therefore have only to the suitable air conditioner system of the actual conditions development and design of subway, just can make air parameter and air quality in the passenger vehicle reach requirement, for the passenger provides comfortable traveling environment.And the air-conditioning unit that uses on the existing subway adopts cellular structure; Air-conditioning unit complete machine is arranged in roof or is hung at the bottom of the car; The air-conditioning unit is connected with return air inlet with the interior air outlet of car with return airway through supply air duct, and in the whole ventilation system, air channel structure is complicated; It is also inhomogeneous to blow, and this air conditioner ventilating system can not adapt to the increasingly high requirement of subway.
Practical fresh content
The new main purpose of this practicality is to solve above-mentioned topic and not enough, and a kind of installing space of saving is provided, and air-supply evenly, and can satisfy the air conditioner of subway vehicle unit ventilation system of vehicle lightweight requirements.
For realizing above-mentioned purpose, the new technical scheme of this practicality is:
A kind of air conditioner of subway vehicle unit ventilation system; In every joint compartment an air-conditioning unit is set at least; Said air-conditioning unit comprises indoor set and off-premises station, is connected to form refrigeration cycle through the refrigerant pipeline between said indoor set and the off-premises station, and said indoor set is installed on car inside ceiling panel top; Said off-premises station is installed at the bottom of the car, and the air outlet of said indoor set and ventilation inlet are communicated with air outlet that is positioned at car and return air inlet through supply air duct and return airway respectively.
Further; Said indoor set is installed on the car inside ceiling panel top of end, compartment; Said supply air duct is along the elongated setting of length over ends of body direction; Said air outlet evenly is arranged on the cooresponding car inside ceiling panel in said supply air duct one or both sides, bottom, and the corresponding said indoor set of said return airway is arranged at the end in said compartment, and said return air inlet is arranged on the car inside ceiling panel of end, compartment.
Further; In every joint compartment two air-conditioning units are set, are divided into the two ends in said compartment, a dividing plate is set in said supply air duct; Said dividing plate is separated into two independently chambeies, air channel with said supply air duct, the air outlet of the corresponding said indoor set in each chamber, said air channel.
Further; Said supply air duct is arranged at the middle section of said car inside ceiling panel top; Said supply air duct upwards is recessed to form an equipment compartment at middle position; In said equipment compartment, be provided with at least one blower fan, corresponding each said blower fan is provided with the exhaust outlet of in the compartment, blowing on said car inside ceiling panel.
Further, said blower fan is a Transverse-flow blower fan, and a plurality of said Transverse-flow blower fans are along the evenly distributed setting of length over ends of body direction.
Further, said supply air duct comprises the air channel framework that is fixed on the vehicle body frame, on the framework of said air channel, is fixedly connected with top board, side plate and end plate, the closed cavity of said supply air duct for being surrounded by said top board, side plate, end plate and car inside ceiling panel.
Further, above said air outlet, be provided with the static pressure chamber, be communicated with through said static pressure chamber between the inner space of said air outlet and said supply air duct along the length over ends of body direction.
Further, respectively be provided with fresh wind port in the both sides of said indoor set, said fresh wind port is communicated with the new wind inlet that is positioned at car body two side ends top.
Further, be provided with the pyrotechnics detector at said fresh wind port and return air inlet place, said pyrotechnics detector is electrically connected with the controller of air-conditioning unit.
Further; End in every joint compartment also is provided with a useless arranging device at least; Said useless arranging device is installed on the top of car inside ceiling panel; Said useless arranging device is made up of useless exhaust outlet and useless air exhausting duct, and said useless exhaust outlet is opened on the said car inside ceiling panel, and the other end of said useless air exhausting duct is communicated with car body end top exhaust outlet.
Content to sum up, the new described a kind of air conditioner of subway vehicle unit ventilation system of this practicality, the air-conditioning unit adopts split-type structural; Off-premises station is installed on the car body bottom; Indoor set is installed on the top of car inside ceiling panel, and supply air duct and return airway also all are installed on roof, is beneficial to alleviate air channel weight; Satisfy vehicle weight-saving requirements at the higher level, and it is even to help the interior air current composition of car.
This practicality newly is provided with a plurality of Transverse-flow blower fans at the middle position of supply air duct, is used in the compartment, blowing, and under the effect of this Transverse-flow blower fan, makes the air-supply of the air-conditioning unit in the compartment more even, further improves the compartment comfort inside.
In addition, this practicality newly need not be provided with independently supply air duct on roof, utilizes framed structure, air channel framework and the sheet material of car body itself to surround the air channel cavity; Simplified the structure in air channel; Save the air channel installing space, alleviate complete vehicle weight simultaneously, and can realize existing car splicing; Splicing process is simple, is beneficial to installation and maintenance.
Description of drawings
Fig. 1 is this practical new construction scheme drawing;
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 is the B-B cutaway view of Fig. 2;
Fig. 4 is the C-C cutaway view of Fig. 2.
Like Fig. 1 to shown in Figure 4, supply air duct 1, return airway 2, useless arranging device 3, compartment 4, indoor set 5, off-premises station 6; Car inside ceiling panel 7, air outlet 8, ventilation inlet 9, fresh wind port 10, return air inlet 11, light air road 12, dividing plate 13; Chamber, air channel 14, vehicle body frame 15, air channel framework 16, top board 17, side plate 18, air outlet 19, static pressure chamber 20, air diffuser 21; Equipment compartment 22, blower fan 23, exhaust outlet 24, useless exhaust outlet 25, useless air exhausting duct 26, new wind air channel 27, new air-valve 28.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment this practical new work is described in further detail:
As depicted in figs. 1 and 2, the new described air conditioner of subway vehicle unit ventilation system of this practicality comprises the air-conditioning unit, supply air duct 1, return airway 2, useless arranging device 3, air-conditioner controller.The direction of arrow among Fig. 1 and Fig. 2 is air-flow direction.
In every joint compartment 4 an air-conditioning unit is set at least; Car driver's cab is installed an air-conditioning unit; Two air-conditioning units and useless arranging devices 3 are installed in compartment, car guest room 4, and two air-conditioning units and two useless arranging devices 3, the temperature, humidity and the freshness that are used to regulate air in a car compartment are respectively installed in middle compartment 4; And guarantee the resh air requirement in every joint compartment and the exhaust air rate that gives up, improve the traveling comfort in the compartment.
Compartment illustrated in figures 1 and 2 is middle compartment, and present embodiment is that example is elaborated with the middle compartment.
As shown in Figure 1; The air-conditioning unit adopts split-type structural, and every air-conditioning unit is made up of an indoor set 5 and an off-premises station 6, is connected to form refrigeration cycle through the refrigerant pipeline that is installed in the car inside wall between indoor set 5 and the off-premises station 6; In the present embodiment, refrigerant preferably adopts R407C.Off-premises station 6 is hung on the car body bottom, and indoor set 5 is installed on the top of the car inside ceiling panel 7 of end, compartment, and two indoor sets 5 are installed on the two ends in compartment 4 respectively.
As shown in Figure 2; In the present embodiment; Fresh wind port 10 is arranged at the both sides of indoor set 5 housings, and fresh wind port 10 is communicated with through new wind air channel 27 and the new wind inlet (not shown) that is positioned at car body two side ends top, sucks new wind simultaneously from the both sides of indoor set 5; Can guarantee the freshness of the air in the compartment 4, improve the comfort level in the compartment 4.Be provided with the new air-valve 28 that is used to control fresh wind port 10 switchings at fresh wind port 10 places.
As shown in figures 1 and 3; In the present embodiment, return airway 2 corresponding indoor sets 5 are arranged at the end in compartment 4 too, and return air inlet 11 is arranged on the car inside ceiling panel 7 of 4 ends, compartment; Return air inlet 11 adopts cell sructure, is provided with at return air inlet 11 places to be used to control the air returning valve that return air inlet 11 opens and closes.Return airway 2 is L shaped, and return air inlet 11 is communicated with the ventilation inlet 9 of indoor set 5, and the air in the compartment 4 gets into from return air inlet 11, gets in the indoor set 5 through return airway 2 and ventilation inlet 9.In the present embodiment, return airway 5 is arranged at the top of car inside ceiling panel 7, and return airway 5 is shorter, helps reducing the weight of whole vehicle, satisfies the requirement of vehicle weight-saving.And return air inlet 11 is arranged at the two ends in compartment 4,4 the central air supply from the compartment, and 4 the two ends return air from the compartment, it is even to help in the car air current composition.
As shown in Figure 2, supply air duct 1 is arranged at the middle section of car inside ceiling panel 7 tops, and supply air duct 1 is along the elongated setting of length over ends of body direction.As shown in Figure 4, a dividing plate 13 is set in supply air duct 1, dividing plate 13 is separated into two independently corresponding air outlets 8 that connect an indoor set 5 of inlet in chamber, 14, one air channels, chamber, air channel 14 with the inner space of supply air duct 1.
For subway, generally all have vehicle body frame 15 in the space above car inside ceiling panel 7, some equipment that need be installed on the roof all are fixed on this vehicle body frame 15.As shown in Figure 4; In the present embodiment; Preferred supply air duct 1 adopts assembled structure; Supply air duct 1 comprises the air channel framework 16 that is fixed on the vehicle body frame 15, on air channel framework 16, is fixedly connected with top board 17, side plate 18 and end plate (not shown), the closed cavity of supply air duct 1 for being surrounded by top board 17, side plate 18, end plate and car inside ceiling panel 7.
As shown in Figure 4; For further reducing the weight of supply air duct 1, air channel framework 16 is spliced by the aluminium section bar framework, and the mode of air channel framework 16 splicings can adopt welding or riveted joint; Preferred riveted joint; Air channel framework 16 and vehicle body frame 15 can weld fixing, also can riveted and fixed, preferably riveted and fixed.Can adopt the mode of welding to fix between top board 17, side plate 18, end plate and dividing plate 13 and the air channel framework 16, preferably adopt the riveted way captive joint.Adopt riveted way can simplify mounting process, be beneficial to daily attention.In order to realize the sealing of supply air duct 1, all pour into the sealant sealing at the seam of each splicing.
Present embodiment; On roof, utilize vehicle body frame 15 structures, air channel framework 16 and each sheet material of car body itself to surround the cavity of supply air duct 1, simplified the structure of supply air duct 1, save the installing space of supply air duct 1; Alleviate complete vehicle weight simultaneously; And can realize existing car splicing, splicing process is simple, is beneficial to installation and maintenance.
As shown in Figure 4; A plurality of air outlets 19 that are used for air-supply in compartment 4 are offered in the bottom of corresponding supply air duct 1 in the one or both sides of car inside ceiling panel 7; In the present embodiment, because of chamber, air channel 14 is two, and in order to simplify mounting process; As shown in Figure 1, preferably along the length over ends of body direction a plurality of air outlets 19 are set in the both sides of car inside ceiling panel 7.The direction of arrow among Fig. 2 is air supply direction, in two side direction compartments 4, blows, and helps the wind circulation in the compartment 4, and then improves the comfort level in the compartment 4.
In the both sides of supply air duct 1, promptly above every side air outlet 19, be provided with static pressure chamber 20 along the length over ends of body direction, static pressure chamber 20 also is spliced through aluminium sheet and aluminium section bar.Be communicated with through static pressure chamber 20 between the inner space of air outlet 19 and supply air duct 1; The transversal surface in static pressure chamber 20 is a right-angled trapezium; On trapezoidal inclined-plane, be provided for the through hole (not shown) with supply air duct 1 ventilation, 19 bottoms that are positioned at static pressure chamber 20 of air outlet.Air in the supply air duct 1 at first passes through hole and gets in the static pressure chamber 20, and air-flow obtains buffering in static pressure chamber 20, and air is sent in the compartment 4 through air outlet 19 again.
Air outlet 19 can adopt cell sructure, also can adopt the structure of through hole, and is preferred in the present embodiment, is provided for the air diffuser 21 with the air shunting again at air outlet 19 places, and air diffuser 21 embeds and is installed in the car inside ceiling panel 7.As shown in Figure 4; The transversal surface of air diffuser 21 is trapezoidal, and the air of seeing off from air outlet 19 like this is divided into two-way by air diffuser 21 again to be sent in the compartment 4, not only helps the air flows in the compartment 4; Make air-supply more even; Guarantee in whole compartment 4, to meet the requirements of temperature traverse, can also avoid air directly to blow human body, improve the comfort level that the compartment is taken.
Because the material of supply air duct 1 is metal, produce for preventing condensed water, on the inwall of supply air duct 1, paste one deck insulation material (not indicating among the figure) again, simultaneously, the insulation material also plays further leak free effect to supply air duct 1.
Like Fig. 2 and shown in Figure 4, in the present embodiment, supply air duct 1 upwards is recessed to form an equipment compartment 22 at middle position; In equipment compartment 22, be provided with at least one blower fan 23, present embodiment is preferred, and blower fan 23 adopts Transverse-flow blower fan; And six Transverse-flow blower fans are set along the line of centers on the length over ends of body direction is evenly distributed; At corresponding each blower fan 23 on the car inside ceiling panel 7 exhaust outlet 24 of an air-supply in compartment 4 is set, air outlet 19 is positioned at the both sides of exhaust outlet 24, and exhaust outlet 24 also adopts cell sructure.When the air-conditioning unit is worked, blow in compartment 4 by air outlet 19, simultaneously; A plurality of Transverse-flow blower fans also turn round, and also blowing in compartment 4 is to stir the air-supply of both sides; Under the effect of this Transverse-flow blower fan, not only make the air-supply of the air-conditioning unit in the compartment 4 more even, further improve the comfort level in the compartment 4; Also guarantee in whole compartment 4, to meet the requirements of temperature traverse, cooperate with air diffuser 21 simultaneously, guarantee under all load-up conditions; Can not have air-conditioning dead angle or keen draft in the compartment 4, even send out under the situation of fault at an air-conditioning unit, air-flow and temperature also can remain on rectangular distribution on 4 interior all positions, compartment.
As shown in Figure 1, the inlet of supply air duct 1 is communicated with the air outlet 8 of indoor set 5 through one section light air road 12, uses light air road 12 to help reducing the difficulty of construction of bringing because of the construction error between indoor set 5 and the supply air duct 1.
As depicted in figs. 1 and 2; In the end in every joint compartment 4 a useless arranging device 3 is set at least also, for middle compartment 4, because every joint compartment 4 is equipped with two air-conditioning units; In the present embodiment; Every joint compartment 4 also correspondence is provided with two useless arranging devices 3, with the useless discharge capacity in the assurance compartment 4, and then the freshness of assurance compartment 4 interior air.In the present embodiment, useless arranging device 3 is installed on the top of car inside ceiling panel 7, and useless arranging device 3 installation sites are hidden, do not take interior space, and it is attractive in appearance also not influence the compartment.
Useless arranging device 3 is made up of with useless air exhausting duct 26 useless exhaust outlet 25, and useless exhaust outlet 25 is opened on the car inside ceiling panel 7, and 25 places are provided with grid at useless exhaust outlet, and the other end of useless air exhausting duct 26 is communicated with car body end top exhaust outlet (not shown).In car, under the effect of malleation waste gas in the car is disposed to outside the car with useless air exhausting duct 26 through useless exhaust outlet 25 naturally, exhaust mode is simple and reliable, and when needs overhauled and safeguard, the grid that only need open on the car inside ceiling panel 7 gets final product, and was simple to operation.
In the inside of useless air exhausting duct 26, an electrically operated valve (not indicating among the figure) is set, be connected with the driver's cab supervisory control desk, according to circumstances control the switching of electrically operated valve by the driver.When situation such as outside vehicle presence of fire, the driver can control electrically operated valve and close, and the smog of avoiding fire causes danger along useless air exhausting duct 26 into the car.
In the present embodiment, also be provided with the pyrotechnics detector at fresh wind port 10 and return air inlet 11 places, the pyrotechnics detector is electrically connected with the controller of air-conditioning unit.Close and during DC750V voltage dead electricity, the air-conditioning unit can be in the emergency ventilation state when driver's cab emergency ventilation switch, when detecting extraneous pyrotechnics like the pyrotechnics detector, new air-valve SELF CL and emergency ventilation system change inner air circulation (full return air) over to; When detecting in the car pyrotechnics like the pyrotechnics detector, air returning valve SELF CL and emergency ventilation system change extraneous air circulation (brand-new wind) over to.
Air-conditioner controller is installed in the air-conditioning control housing of car inner end, and two air-conditioning units in every joint compartment, installing obtain similar control through the microprocessor in the air-conditioner controller.
As stated, in conjunction with the given scheme content of accompanying drawing, can derive the similar techniques scheme.In every case be the content that does not break away from this practical new solution, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of this practical new solution according to the new technical spirit of this practicality.
Claims (10)
1. air conditioner of subway vehicle unit ventilation system; In every joint compartment an air-conditioning unit is set at least; It is characterized in that: said air-conditioning unit comprises indoor set and off-premises station, is connected to form refrigeration cycle through the refrigerant pipeline between said indoor set and the off-premises station, and said indoor set is installed on car inside ceiling panel top; Said off-premises station is installed at the bottom of the car, and the air outlet of said indoor set and ventilation inlet are communicated with air outlet that is positioned at car and return air inlet through supply air duct and return airway respectively.
2. air conditioner of subway vehicle unit ventilation system according to claim 1; It is characterized in that: said indoor set is installed on the car inside ceiling panel top of end, compartment; Said supply air duct is along the elongated setting of length over ends of body direction; Said air outlet evenly is arranged on the cooresponding car inside ceiling panel in said supply air duct one or both sides, bottom, and the corresponding said indoor set of said return airway is arranged at the end in said compartment, and said return air inlet is arranged on the car inside ceiling panel of end, compartment.
3. air conditioner of subway vehicle unit ventilation system according to claim 2; It is characterized in that: two air-conditioning units are set in every joint compartment; Be divided into the two ends in said compartment; One dividing plate is set in said supply air duct, and said dividing plate is separated into two independently chambeies, air channel with said supply air duct, the air outlet of the corresponding said indoor set in each chamber, said air channel.
4. air conditioner of subway vehicle unit ventilation system according to claim 2; It is characterized in that: said supply air duct is arranged at the middle section of said car inside ceiling panel top; Said supply air duct upwards is recessed to form an equipment compartment at middle position; In said equipment compartment, be provided with at least one blower fan, corresponding each said blower fan is provided with the exhaust outlet of in the compartment, blowing on said car inside ceiling panel.
5. air conditioner of subway vehicle unit ventilation system according to claim 4 is characterized in that: said blower fan is a Transverse-flow blower fan, and a plurality of said Transverse-flow blower fans are along the evenly distributed setting of length over ends of body direction.
6. air conditioner of subway vehicle unit ventilation system according to claim 2; It is characterized in that: said supply air duct comprises the air channel framework that is fixed on the vehicle body frame; On the framework of said air channel, be fixedly connected with top board, side plate and end plate, the closed cavity of said supply air duct for surrounding by said top board, side plate, end plate and car inside ceiling panel.
7. air conditioner of subway vehicle unit ventilation system according to claim 6 is characterized in that: above said air outlet, be provided with the static pressure chamber along the length over ends of body direction, be communicated with through said static pressure chamber between the inner space of said air outlet and said supply air duct.
8. air conditioner of subway vehicle unit ventilation system according to claim 1 is characterized in that: the both sides at said indoor set respectively are provided with fresh wind port, and said fresh wind port is communicated with the new wind inlet that is positioned at car body two side ends top.
9. air conditioner of subway vehicle unit ventilation system according to claim 8 is characterized in that: be provided with the pyrotechnics detector at said fresh wind port and return air inlet place, said pyrotechnics detector is electrically connected with the controller of air-conditioning unit.
10. air conditioner of subway vehicle unit ventilation system according to claim 1; It is characterized in that: the end in every joint compartment also is provided with a useless arranging device at least; Said useless arranging device is installed on the top of car inside ceiling panel; Said useless arranging device is made up of useless exhaust outlet and useless air exhausting duct, and said useless exhaust outlet is opened on the said car inside ceiling panel, and the other end of said useless air exhausting duct is communicated with car body end top exhaust outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220155538 CN202608783U (en) | 2012-04-13 | 2012-04-13 | Ventilation system for air conditioning units of subway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220155538 CN202608783U (en) | 2012-04-13 | 2012-04-13 | Ventilation system for air conditioning units of subway vehicle |
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| Publication Number | Publication Date |
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| CN202608783U true CN202608783U (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220155538 Expired - Lifetime CN202608783U (en) | 2012-04-13 | 2012-04-13 | Ventilation system for air conditioning units of subway vehicle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102975733A (en) * | 2012-12-31 | 2013-03-20 | 西安飞豹科技发展公司 | Air conditioner for high-speed magnetic levitation train |
| CN103373366A (en) * | 2012-04-13 | 2013-10-30 | 南车青岛四方机车车辆股份有限公司 | Subway vehicle air conditioning unit ventilation system |
| CN103419802A (en) * | 2013-08-23 | 2013-12-04 | 长春轨道客车股份有限公司 | Channel for supplying air oppositely for air conditioners of railway vehicle |
| CN103462764A (en) * | 2013-09-28 | 2013-12-25 | 河南博斐科技有限公司 | Forensic mobile work handcart |
| CN103661458A (en) * | 2013-12-17 | 2014-03-26 | 南车青岛四方机车车辆股份有限公司 | Air-conditioner unit air duct system for vehicle |
| CN114274992A (en) * | 2021-12-02 | 2022-04-05 | 北京轨道交通技术装备集团有限公司 | Air conditioning system of railway vehicle |
-
2012
- 2012-04-13 CN CN 201220155538 patent/CN202608783U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103373366A (en) * | 2012-04-13 | 2013-10-30 | 南车青岛四方机车车辆股份有限公司 | Subway vehicle air conditioning unit ventilation system |
| CN102975733A (en) * | 2012-12-31 | 2013-03-20 | 西安飞豹科技发展公司 | Air conditioner for high-speed magnetic levitation train |
| CN102975733B (en) * | 2012-12-31 | 2015-07-15 | 西安飞豹科技发展公司 | Air conditioner for high-speed magnetic levitation train |
| CN103419802A (en) * | 2013-08-23 | 2013-12-04 | 长春轨道客车股份有限公司 | Channel for supplying air oppositely for air conditioners of railway vehicle |
| CN103462764A (en) * | 2013-09-28 | 2013-12-25 | 河南博斐科技有限公司 | Forensic mobile work handcart |
| CN103462764B (en) * | 2013-09-28 | 2015-10-28 | 河南盛沃电子科技有限公司 | Forensic mobile work handcart |
| CN103661458A (en) * | 2013-12-17 | 2014-03-26 | 南车青岛四方机车车辆股份有限公司 | Air-conditioner unit air duct system for vehicle |
| CN103661458B (en) * | 2013-12-17 | 2017-02-01 | 中车青岛四方机车车辆股份有限公司 | Air-conditioner unit air duct system for vehicle |
| CN114274992A (en) * | 2021-12-02 | 2022-04-05 | 北京轨道交通技术装备集团有限公司 | Air conditioning system of railway vehicle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Jihongtan town Chengyang District Shandong city Qingdao province Jinhong road 266111 No. 88 Patentee after: CRRC QINGDAO SIFANG CO., LTD. Address before: Jihongtan town Chengyang District Shandong city Qingdao province Jinhong road 266111 No. 88 Patentee before: CSR Qingdao Sifang Locomotive and Rolling Stock Co., Ltd. |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20121219 Effective date of abandoning: 20160907 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |