WO2021082897A1 - 一种尿素泵 - Google Patents

一种尿素泵 Download PDF

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Publication number
WO2021082897A1
WO2021082897A1 PCT/CN2020/120513 CN2020120513W WO2021082897A1 WO 2021082897 A1 WO2021082897 A1 WO 2021082897A1 CN 2020120513 W CN2020120513 W CN 2020120513W WO 2021082897 A1 WO2021082897 A1 WO 2021082897A1
Authority
WO
WIPO (PCT)
Prior art keywords
heating
heating plate
urea pump
lead frame
urea
Prior art date
Application number
PCT/CN2020/120513
Other languages
English (en)
French (fr)
Inventor
何国裕
夏昌勇
周宗銮
徐谦
Original Assignee
浙江锦佳汽车零部件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江锦佳汽车零部件有限公司 filed Critical 浙江锦佳汽车零部件有限公司
Publication of WO2021082897A1 publication Critical patent/WO2021082897A1/zh

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/08—Cooling; Heating; Preventing freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/20—Filtering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts

Definitions

  • the utility model relates to a pump, in particular to a urea pump used in automobiles.
  • the core component of the SCR system is the urea pump
  • the general urea pump includes an assembly with a housing, a filter cavity, a pressure sensor, a throttle valve, a reversing valve, and a pump core.
  • the urea pump pumps the urea in the urea tank to the urea injection unit.
  • the urea injection unit sprays the urea and neutralizes the nitrogen oxides in the exhaust gas of the automobile.
  • the urea pump is integrated with a heating plate on the shell.
  • the heating plate is energized and heated to prevent the urea in the channel of the shell from freezing, and in order to prevent the urea in the filter cavity It freezes and wraps the heating jacket outside the filter cavity.
  • the heating plate and heating jacket of the existing urea pump are connected by wires.
  • the wiring of the wires is troublesome and inconvenient to assemble, which may easily lead to poor contact.
  • the wiring needs to be re-arranged to provide users with Inconvenient to come.
  • the present invention innovatively provides a urea pump that does not require wiring, is convenient to assemble, and is reliable in use.
  • This kind of urea pump includes a housing, a heating plate is integrated on the housing, and a filter cavity is installed on the housing, and is characterized in that: the filter cavity is wrapped with a heating jacket, the heating plate and the heating jacket The electrical connection is achieved through the lead frame.
  • the heating plate and the heating jacket are connected in parallel through the parallel wires on the lead frame, and the heating plate and the heating jacket are also connected in series through the series wires on the lead frame.
  • the parallel wires on the lead frame or The series line can be cut off.
  • the heating plate and heating jacket are both composited up and down by insulating plastic and electric heating alloy.
  • the urea pump provided by the utility model, compared with the electric wire, no wiring is required, easy to assemble and reliable in use, and different circuit directions are realized by cutting off different points from the connected copper wires at the beginning.
  • Figure 1 is a front view of the housing of the utility model
  • Figure 2 is a rear view of the housing of the utility model
  • Figure 3 is a schematic diagram of the structure of the lead frame
  • Figure 4 is a circuit connection diagram of the heating plate and the heating jacket.
  • this kind of urea pump includes a casing 1, and a heating plate 10 is integrated on the casing 1. After the heating plate 10 is energized and heated, it can prevent the urea in the passage of the casing 1 from freezing; A filter cavity 2 is installed on the housing 1. The filter cavity 2 is used to filter impurities in urea. A heating jacket 20 is wrapped around the filter cavity 2. After the heating jacket 20 is energized and heated, it can prevent the Urea freezes.
  • the heating plate 10 and the heating jacket 20 of the present invention are electrically connected through the lead frame 3. Compared with wires, the electrical connection through the lead frame 3 does not require wiring (the lead frame 3 integrates conductive copper wires on a main board). Due to the high degree of integration, it is convenient to assemble and reliable in use.
  • the heating plate 10 and the heating jacket 20 of the present invention are both composited up and down by insulating plastic and electric heating alloy. Electric heating alloy is used for heating, and insulating plastic can play a dual role of heat insulation and insulation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Compressor (AREA)

Abstract

一种尿素泵，包括壳体（1），壳体上集成有加热板（10），壳体上安装有过滤腔（2），过滤腔外包裹有加热套（20），加热板与加热套通过引线框（3）上的并联线或串联线实现并联连接或串联连接，其无需排线，组装方便，使用可靠，并可适配于不同的电压。

Description

一种尿素泵 技术领域
本实用新型涉及一种泵，具体涉及用于汽车上的尿素泵。
 背景技术
随着国家排放要求的提高，越来越多的柴油车需要加装SCR系统，利用尿素中和氮氧化合物，以降低柴油车对环境的污染。而SCR系统的核心部件是尿素泵，而一般尿素泵包括有总成有壳体、过滤腔、压力传感器、节流阀、换向阀以及泵芯。尿素泵将尿素箱内的尿素泵到尿素喷射单元，由尿素喷射单元将尿素喷出，并与汽车尾气中的氮氧化合物中和。为了使尿素泵在寒冷的天气也能正常工作，一般尿素泵在起壳体上集成有加热板，该加热板通电加热，能防止壳体通道内的尿素冻结，而为了防止过滤腔内的尿素冻结，还在过滤腔外包裹加热套。现有尿素泵其加热板与加热套都是通过电线连接，然而，电线连接排线麻烦，组装不便，容易导致接触不良，而且当需要适配不同的电压时，需要重新排线，给用户带来不便。
 技术问题
鉴于现有技术存在的不足，本实用新型创新提供了一种无需排线、组装方便且使用可靠的尿素泵。
 技术解决方案
该种尿素泵包括有壳体，所述壳体上集成有加热板，所述壳体上安装有过滤腔，其特征在于：所述过滤腔外包裹有加热套，所述加热板与加热套通过引线框实现电连接。
所述加热板与加热套之间通过引线框上的并联线实现并联连接， 所述加热板与加热套之间还通过引线框上的串联线实现串联连接，所述引线框上的并联线或串联线可被切断。
所述加热板与加热套都是由绝缘塑料与电热合金上下复合而成。
 有益效果
按照本实用新型提供的尿素泵，相比较于电线，无需排线，组装方便且使用可靠，由一开始连体的铜线通过切断不同的点来实现不同的电路走向。
 附图说明
图1为本实用新型壳体的主视图；
图2为本实用新型壳体的后视图；
图3为引线框的结构示意图；
图4为加热板与加热套的电路连接图。
 本发明的实施方式
如图1与图2所示，该种尿素泵包括有壳体1，在壳体1上集成有加热板10，该加热板10通电加热后，能防止壳体1通道内的尿素冻结；另外，在壳体1上安装有过滤腔2，该过滤腔2用于过滤尿素中的杂质，而在过滤腔2外包裹有加热套20，加热套20通电加热后，能防止过滤腔2内的尿素冻结。为了便于两者实现电连接，如图1与图3所示，本实用新型的加热板10与加热套20通过引线框3实现电连接。相比较于电线，通过引线框3实现电连接无需排线（引线框3是将导电铜线集成在一个主板上），由于集成度高，因此组装方便且使用可靠。
为了能使该尿素泵适配不同的电压（车辆型号不同，供电电压也时有不同），如图4所示，加热板10与加热套20之间通过引线框3上的并联线实现并联连接，而且加热板10与加热套20之间还通过引线框上的串联线实现串联连接，引线框3上的并联线或串联线可被切断。根据功率计算公式：W=U²/R。当该尿素泵需适配较高的电压时，切断图4中的并联线A点与B点，这样加热板10与加热套20实现串联，总阻值增大，功率维持在一定范围内；当该尿素泵需适配较低的电压时，切断图4中的串联线C点，这样加热板10与加热套20实现并联，总阻值变小，功率维持在一定范围内。通过这种方式，可以使该尿素泵适配不同的供电电压；而且这种方式操作方便，只要人工切断串联线或并联线即可。
最后值得一提的是，本实用新型的加热板10与加热套20都是由绝缘塑料与电热合金上下复合而成。电热合金用于发热，而绝缘塑料能起到隔热与绝缘的双重作用。

Claims (3)

  1. 一种尿素泵，包括有壳体（1），所述壳体（1）上集成有加热板（10），所述壳体（1）上安装有过滤腔（2），其特征在于：所述过滤腔（2）外包裹有加热套（20），所述加热板（10）与加热套（20）通过引线框（3）实现电连接。
  2. 根据权利要求1所述的一种尿素泵，其特征在于：所述加热板（10）与加热套（20）之间通过引线框（3）上的并联线实现并联连接， 所述加热板（10）与加热套（20）之间还通过引线框（3）上的串联线实现串联连接，所述引线框（3）上的并联线或串联线可被切断。
  3. 根据权利要求1或2所述的一种尿素泵，其特征在于：所述加热板（10）与加热套（20）都是由绝缘塑料与电热合金上下复合而成。
PCT/CN2020/120513 2019-11-03 2020-10-13 一种尿素泵 WO2021082897A1 (zh)

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CN211008824U (zh) * 2019-11-03 2020-07-14 浙江锦佳汽车零部件有限公司 一种尿素泵

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103460792A (zh) * 2011-01-28 2013-12-18 韦巴斯托股份公司 电加热设备、包括电加热设备的车辆以及电加热设备的控制方法
CN105164862A (zh) * 2013-03-26 2015-12-16 法雷奥热系统公司 用于电设备的控制模块
CN205277667U (zh) * 2015-12-04 2016-06-01 重庆浩珑机械有限公司 一种柴油机燃油控温装置
GB2533099A (en) * 2014-12-09 2016-06-15 Daimler Ag Method for providing heating to a diesel exhaust fluid (DEF) tank and diesel exhaust fluid (DEF) tank
CN109268112A (zh) * 2018-09-18 2019-01-25 浙江锦佳汽车零部件有限公司 高适应型按需供液尿素泵总成
CN209040933U (zh) * 2018-08-15 2019-06-28 无锡威孚力达催化净化器有限责任公司 一种用于scr尿素泵的加热器
CN211008824U (zh) * 2019-11-03 2020-07-14 浙江锦佳汽车零部件有限公司 一种尿素泵

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103460792A (zh) * 2011-01-28 2013-12-18 韦巴斯托股份公司 电加热设备、包括电加热设备的车辆以及电加热设备的控制方法
CN105164862A (zh) * 2013-03-26 2015-12-16 法雷奥热系统公司 用于电设备的控制模块
GB2533099A (en) * 2014-12-09 2016-06-15 Daimler Ag Method for providing heating to a diesel exhaust fluid (DEF) tank and diesel exhaust fluid (DEF) tank
CN205277667U (zh) * 2015-12-04 2016-06-01 重庆浩珑机械有限公司 一种柴油机燃油控温装置
CN209040933U (zh) * 2018-08-15 2019-06-28 无锡威孚力达催化净化器有限责任公司 一种用于scr尿素泵的加热器
CN109268112A (zh) * 2018-09-18 2019-01-25 浙江锦佳汽车零部件有限公司 高适应型按需供液尿素泵总成
CN211008824U (zh) * 2019-11-03 2020-07-14 浙江锦佳汽车零部件有限公司 一种尿素泵

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