CN112152366A - Prevent condensation motor - Google Patents
Prevent condensation motor Download PDFInfo
- Publication number
- CN112152366A CN112152366A CN202010926811.XA CN202010926811A CN112152366A CN 112152366 A CN112152366 A CN 112152366A CN 202010926811 A CN202010926811 A CN 202010926811A CN 112152366 A CN112152366 A CN 112152366A
- Authority
- CN
- China
- Prior art keywords
- motor
- wire holder
- copper bar
- condensation
- junction box
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
- H02K2205/09—Machines characterised by drain passages or by venting, breathing or pressure compensating means
Abstract
The invention relates to a condensation-preventing motor, wherein a wire holder (4) is arranged between a wire connection box cavity (S1) and a winding working cavity (S2) to hermetically isolate the wire connection box cavity (S1) and the winding working cavity (S2); the winding working cavity and the junction box cavity are isolated through the wire holder, so that air convection heat transfer between the cavities is prevented; the rubber sealing gasket is used for isolating the junction box from the end cover to prevent contact heat transfer; the heat that the winding produced when the motor operation like this can not transmit the terminal box chamber in a large number, and terminal box intracavity portion air and terminal box casing can not produce big difference in temperature, and under the effect of breathing the stopper, the relative humidity and the pressure of having guaranteed winding working chamber and terminal box chamber have effectively prevented the emergence of motor condensation phenomenon simultaneously.
Description
Technical Field
The invention relates to the technical field of anti-condensation structures of water-cooled motors, in particular to an anti-condensation motor.
Background
Under the conditions of high external environment humidity and low temperature, dew is easily condensed on the inner wall of the cavity of the junction box after the motor is stopped, so that the insulation performance of the motor is reduced and even the internal short circuit is caused; the condensation drops to inside metal parts that more can corrode the motor of motor, seriously influences motor performance, probably takes place the motor phenomenon of burning out even. The condensation inside the motor is mostly generated on the inner wall of the shell of the junction box and the inner side of the box cover. The reason is that the inside of the water-cooled motor can be divided into a winding working cavity and a junction box cavity which are completely communicated with each other, the winding is electrified when the motor runs, the temperature rises, the temperature in the winding cavity and the temperature in the junction box cavity rise through heat convection and heat radiation, and hot air rises. After the motor stops operating, outside low temperature environment can accelerate motor casing cooling, and wherein the terminal box casing is fast than the inner wall cooling in winding chamber, and the two is fast than the inside air cooling of motor again, and motor inside air and terminal box casing will produce great difference in temperature like this, and vapor meets cold the casing and can directly condense into the dew on the casing surface liquefaction, the motor condensation phenomenon promptly.
The prior art has seen the following anti-condensation measures: 1) the three-proofing paint is sprayed inside the junction box, so that the insulation performance of the motor can be improved, but the condensation occurrence probability cannot be reduced, and the condensation problem is not solved fundamentally; 2) the drying agent is additionally arranged in the junction box, so that condensation can be avoided in a short time, but the junction box needs to be replaced periodically, a box cover needs to be disassembled when the junction box is replaced, potential hazards are brought to the performance of a motor, and the maintainability is poor; 3) the dehumidification device is additionally arranged, the required installation space is large, the cost is high, and the reliability of the humidity and temperature sensors in the device is not high; 4) the junction box cover is additionally provided with the heat insulation layer, condensation can be reduced on the inner wall of the box cover, and the phenomenon that condensation around the junction box cannot be effectively solved.
The existing anti-condensation measure (CN110943568A) is to isolate the winding working cavity from the junction box cavity through a terminal connection assembly, the terminal connection assembly structure is formed by installing and combining a metal terminal, a check ring, a nylon fixing plate and an O-shaped ring, the structure is complex, the number of parts is large, the processing cost is high, the metal terminal cannot be too large, otherwise, the size of the nylon fixing plate is multiplied, and the installation space size is large; the structure is suitable for a low-current motor with low requirement on the contact area of the metal terminal, is limited by size and installation space, and has low universality.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention provides an anti-condensation motor.
The technical scheme of the invention is as follows:
the utility model provides a prevent condensation motor, includes motor casing and terminal box 3, the motor casing includes motor frame (9) and is located motor end cover (6) of motor frame (9) one side, terminal box (3) through the lower extreme with motor end cover (6) butt is installed on the motor casing, the inside of terminal box (3) is formed with terminal box chamber (S1), the inside of motor casing is formed with winding working chamber (S2), terminal box chamber (S1) with be provided with terminal box (4) between winding working chamber (S2) in order to seal and keep apart terminal box chamber (S1) and winding working chamber (S2) each other, its characterized in that:
the wire holder (4) comprises a wire holder base body (10), a copper bar (11) and a threaded insert; the upper end of the wire holder base body (10) is positioned in the wire box cavity (S1), the lower end of the wire holder base body (10) is positioned in the winding working cavity (S2), and a threaded insert is arranged in the wire holder base body (10); the copper bar (11) is positioned inside the wire holder base body (10).
Furthermore, the thread inserts comprise an upper thread insert (12-1) which is positioned in a junction box cavity (S1) and extends longitudinally at the upper end of the junction base body (10), and a lower thread insert (12-2) which is positioned in a winding working cavity (S2) and extends transversely at the lower end of the junction base body (10), a high-voltage cable terminal is connected with the upper thread insert (12-1), and a three-phase winding outlet terminal is connected with the lower thread insert (12-2); two ends of the copper bar (11) are respectively positioned at the corresponding positions of the upper threaded insert (12-1) and the lower threaded insert (12-2).
Further, the wire holder (4) comprises a wire connecting head part (4-1) positioned at the upper part and a wire connecting base part (4-2) positioned at the lower part;
the central position of the upper surface of the wiring head part (4-1) is provided with a plurality of mounting holes (4-12), and the mounting holes (4-12) are partially positioned at one side close to the upper threaded insert (12-1) and partially positioned at one side far away from the upper threaded insert (12-1);
a plurality of head mounting grooves (4-11) are arranged on one side of the upper surface of the wiring head (4-1) side by side at equal intervals, the upper end of the copper bar (11) is mounted below the head mounting grooves (4-11), and the upper threaded insert (12-1) is mounted below the upper end of the copper bar (11);
a plurality of base mounting grooves (4-21) are arranged on the other side of the side surface of the wiring base (4-2) at equal intervals side by side, the lower end of the copper bar (11) is mounted in the base mounting grooves (4-21), and the lower threaded insert (12-2) is mounted in the lower end of the copper bar (11).
Furthermore, the extending directions of the upper end and the lower end of the copper bar (11) are mutually vertical, and the connection is realized inside the wiring head part 4-1 through an arc curve.
Furthermore, a junction box cover (1) is arranged at the upper end of the junction box (3), and heat insulation cotton (2) is bonded on the inner wall of the junction box cover (1).
Furthermore, a sealing glue is coated on the joint surface between the junction box (3) and the wire holder (4).
Furthermore, a sealing and heat-insulating pad (5) is arranged between the abutting positions of the junction box (3) and the motor end cover (6).
Furthermore, the three-phase winding outlet terminal (7) is positioned in the winding working cavity (S2) and one end of the three-phase winding outlet terminal is inserted into the lower end of the wire holder (4).
Furthermore, a first breathing plug (8-1) is arranged on the outer wall of the junction box (3), and a second breathing plug (8-2) is arranged on the outer wall of the motor end cover (6).
Furthermore, the wire holder base body (10) is made of plastic materials and is formed with the copper bar (11) in an injection molding mode.
Compared with the prior art, the invention has the following beneficial effects:
the invention connects the three-phase winding outlet terminal on the wire holder and places the three-phase winding outlet terminal in the winding working cavity; the wire holder is arranged on the bottom surface of the junction box, and the joint surface of the wire holder and the junction box is coated with sealant for sealing, so that the winding working cavity and the junction box cavity are sealed and isolated; the breathing plugs are independently arranged at two positions respectively arranged on the end cover and the junction box, so that dust, water or other harmful substances are effectively prevented from entering the cavity, and the balance of the internal and external pressure differences in the cavity is kept; the heat insulation cotton is bonded on the inner side of the junction box cover and is arranged on the junction box, so that water vapor is effectively prevented from upwards condensing. The winding working cavity and the junction box cavity are isolated through the wire holder, so that air convection heat transfer between the cavities is prevented; the rubber sealing gasket is used for isolating the junction box from the end cover to prevent contact heat transfer; the heat that the winding produced when the motor operation like this can not transmit the terminal box chamber in a large number, and terminal box intracavity portion air and terminal box casing can not produce big difference in temperature, and under the effect of breathing the stopper, the relative humidity and the pressure of having guaranteed winding working chamber and terminal box chamber have effectively prevented the emergence of motor condensation phenomenon simultaneously.
Drawings
FIG. 1 is a side view of the structure of an anti-condensation motor of the present invention;
FIG. 2 is a side view of the structure of the wire holder of the present invention;
fig. 3 is a perspective view showing the structure of the wire holder of the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and will therefore make the scope of the invention more clearly and clearly defined.
As shown in fig. 1-3, an anti-condensation motor comprises a motor housing, the motor housing comprises a motor base 9 and a motor end cover 6 located on one side of the motor base, a junction box 3 is mounted on the motor housing through the lower end and the motor end cover 6 in an abutting mode, a junction box cavity S1 is formed inside the junction box 3, a winding working cavity S2 is formed inside the motor housing, and a junction box 4 is arranged between the junction box cavity S1 and the winding working cavity S2 to hermetically isolate the junction box cavity S1 from the winding working cavity S2.
The wire holder 4 comprises a wire holder base body 10, a copper bar 11 and a thread insert; the upper end of the wire holder base body 10 is located in the wire holder cavity S1, the lower end of the wire holder base body 10 is located in the winding working cavity S2, a threaded insert is arranged in the wire holder base body 10, the threaded insert comprises an upper threaded insert 12-1 and a lower threaded insert 12-2, the upper threaded insert is located in the wire holder cavity S1 and extends longitudinally from the upper end of the wire holder base body 10, the lower threaded insert 12-2 is located in the winding working cavity S2 and extends transversely from the lower end of the wire holder base body 10, a high-voltage cable terminal is connected with the upper threaded insert 12-1, a three-phase winding wire outlet terminal is connected with the lower threaded insert 12-2, a copper bar 11 is located in the wire holder base body 10, and two ends of the copper bar are located at corresponding positions of the; on the premise of ensuring the reliable connection of the outgoing lines of the three-phase winding, the sealing isolation of the junction box cavity S1 and the winding working cavity S2 is also completed, and the heat transfer effect is effectively reduced; by means of the arrangement of the upper threaded insert 12-1 and the lower threaded insert 12-2 which are far away from each other and perpendicular to the extending direction, on the basis of effectively achieving sealing isolation and reducing heat transfer, the conditions that the strength is uneven and the position deviation is unstable due to single extending direction can be avoided.
Specifically, a junction box cover 1 is arranged at the upper end of the junction box 3, and heat insulation cotton 2 is bonded on the inner wall of the junction box cover 1, so that water vapor is effectively prevented from being condensed upwards.
Specifically, sealing glue is coated on a joint surface between the junction box 3 and the junction box 4, so that the winding working cavity S2 and the junction box cavity S1 are sealed and isolated, contact heat transfer is prevented, heat generated by a winding during the operation of the motor can not be greatly transferred to the junction box cavity S1, large temperature difference can not be generated between the air inside the junction box cavity S1 and a junction box shell, meanwhile, under the action of a breathing plug, the relative humidity and the pressure of the winding working cavity S2 and the junction box cavity S1 are ensured, and the motor condensation phenomenon is effectively prevented.
Specifically, a sealing heat insulation pad 5 is arranged between the abutting positions of the junction box 3 and the motor end cover 6, and the heat conduction effect during direct contact can be effectively reduced due to the low heat conduction coefficient of the sealing heat insulation pad; thereby preventing the air in the winding working chamber S2 from transferring heat to the interior of the terminal block chamber S1 by thermal convection.
Specifically, the three-phase winding outlet terminal 7 is located inside the winding working cavity S2, and one end of the three-phase winding outlet terminal is plugged into the lower end of the wire holder 4.
Specifically, a first breather plug 8-1 is arranged on the outer wall of the junction box 3, a second breather plug 8-2 is arranged on the outer wall of the motor end cover 6, and the breather plugs are respectively arranged on the motor end cover 6 and the junction box 3, so that dust, water or other harmful substances are effectively prevented from entering the winding working cavity and the interior of the junction box cavity, and meanwhile, the pressure difference inside and outside the cavity is kept balanced.
Specifically, the wire holder base body 10 is made of plastic and is injection-molded with the copper bar 11, the structure is simple, the processing cost is low, the motor size and the installation space are not limited, the installation is more convenient, the serialization and the generalization are higher, and the application range is wider.
Referring to fig. 3, which is a schematic perspective view of the wire holder 4 provided by the present invention, the wire holder 4 includes a wire connecting head 4-1 located above and a wire connecting base 4-2 located below, the wire connecting head 4-1 has a transverse dimension larger than that of the wire connecting base 4-2, and the wire connecting head 4-1 covers the wire connecting base 4-2 in a top view.
The four corners of the wiring head part 4-1 are respectively provided with arc grooves so as to facilitate the integral clamping operation of the wiring seat 4.
The central position of the upper surface of the wiring head part 4-1 is provided with a plurality of mounting holes 4-12, and the mounting holes 4-12 are partially positioned at one side close to the upper threaded insert 12-1 and partially positioned at one side far away from the upper threaded insert 12-1 so as to ensure the integral uniformity and stability of the wiring head part 4-1 during installation.
A plurality of head mounting grooves 4-11 are arranged side by side at equal intervals on one side of the upper surface of the wiring head 4-1, the upper end of the copper bar 11 is mounted below the head mounting grooves 4-11, and the upper threaded insert 12-1 is mounted below the upper end of the copper bar 11.
A plurality of base mounting grooves 4-21 are arranged on the other side of the side surface of the wiring base 4-2 at equal intervals side by side, the lower end of the copper bar 11 is mounted in the base mounting grooves 4-21, and the lower threaded insert 12-2 is mounted in the lower end of the copper bar 11.
As shown in fig. 2, the extending directions of the upper end and the lower end of the copper bar 11 are perpendicular to each other, and the connection is realized inside the terminal portion 4-1 through an arc curve, so that the service life of the copper bar is prolonged in a smooth connection mode while the installation requirement is met.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a prevent condensation motor, includes motor casing and terminal box 3, the motor casing includes motor frame (9) and is located motor end cover (6) of motor frame (9) one side, terminal box (3) through the lower extreme with motor end cover (6) butt is installed on the motor casing, the inside of terminal box (3) is formed with terminal box chamber (S1), the inside of motor casing is formed with winding working chamber (S2), terminal box chamber (S1) with be provided with terminal box (4) between winding working chamber (S2) in order to seal and keep apart terminal box chamber (S1) and winding working chamber (S2) each other, its characterized in that:
the wire holder (4) comprises a wire holder base body (10), a copper bar (11) and a threaded insert; the upper end of the wire holder base body (10) is positioned in the wire box cavity (S1), the lower end of the wire holder base body (10) is positioned in the winding working cavity (S2), and a threaded insert is arranged in the wire holder base body (10); the copper bar (11) is positioned inside the wire holder base body (10).
2. The anti-condensation motor according to claim 1, wherein: the thread insert comprises an upper thread insert (12-1) which is positioned in a junction box cavity (S1) and longitudinally extends from the upper end of a junction base body (10), and a lower thread insert (12-2) which is positioned in a winding working cavity (S2) and transversely extends from the lower end of the junction base body (10), a high-voltage cable terminal is connected with the upper thread insert (12-1), and a three-phase winding outgoing line terminal is connected with the lower thread insert (12-2); two ends of the copper bar (11) are respectively positioned at the corresponding positions of the upper threaded insert (12-1) and the lower threaded insert (12-2).
3. The anti-condensation motor according to claim 1 or 2, wherein: the wire holder (4) comprises a wire connecting head part (4-1) positioned at the upper part and a wire connecting base part (4-2) positioned at the lower part;
the central position of the upper surface of the wiring head part (4-1) is provided with a plurality of mounting holes (4-12), and the mounting holes (4-12) are partially positioned at one side close to the upper threaded insert (12-1) and partially positioned at one side far away from the upper threaded insert (12-1);
a plurality of head mounting grooves (4-11) are arranged on one side of the upper surface of the wiring head (4-1) side by side at equal intervals, the upper end of the copper bar (11) is mounted below the head mounting grooves (4-11), and the upper threaded insert (12-1) is mounted below the upper end of the copper bar (11);
a plurality of base mounting grooves (4-21) are arranged on the other side of the side surface of the wiring base (4-2) at equal intervals side by side, the lower end of the copper bar (11) is mounted in the base mounting grooves (4-21), and the lower threaded insert (12-2) is mounted in the lower end of the copper bar (11).
4. The anti-condensation motor according to claim 1 or 2, wherein: the extending directions of the upper end and the lower end of the copper bar (11) are mutually vertical, and the upper end and the lower end are connected through an arc curve inside the wiring head part 4-1.
5. The anti-condensation motor according to claim 1 or 2, wherein: the upper end of the junction box (3) is provided with a junction box cover (1), and the inner wall of the junction box cover (1) is bonded with heat insulation cotton (2).
6. The anti-condensation motor according to claim 1 or 2, wherein: and sealant is coated on the joint surface between the junction box (3) and the junction base (4).
7. The anti-condensation motor according to claim 1 or 2, wherein: and a sealing heat-insulating pad (5) is arranged between the connection box (3) and the motor end cover (6).
8. The anti-condensation motor according to claim 1 or 2, wherein: the three-phase winding outlet terminal (7) is positioned in the winding working cavity (S2) and one end of the three-phase winding outlet terminal is inserted into the lower end of the wire holder (4).
9. The anti-condensation motor according to claim 1 or 2, wherein: the outer wall of the junction box (3) is provided with a first breathing plug (8-1), and the outer wall of the motor end cover (6) is provided with a second breathing plug (8-2).
10. The anti-condensation motor according to claim 1 or 2, wherein: the wiring base body (10) is made of plastic materials and is formed by injection molding with the copper bar (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010926811.XA CN112152366A (en) | 2020-09-07 | 2020-09-07 | Prevent condensation motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010926811.XA CN112152366A (en) | 2020-09-07 | 2020-09-07 | Prevent condensation motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112152366A true CN112152366A (en) | 2020-12-29 |
Family
ID=73889564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010926811.XA Pending CN112152366A (en) | 2020-09-07 | 2020-09-07 | Prevent condensation motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112152366A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060119197A1 (en) * | 2003-10-03 | 2006-06-08 | Franklin Electric Co., Inc. | Electric motors for washdown, food processing, and chemical applications |
| CN205960577U (en) * | 2016-07-15 | 2017-02-15 | 珠海格力电器股份有限公司 | Compressor and compressor terminal box mounting structure |
| CN207098833U (en) * | 2017-08-21 | 2018-03-13 | 苏州朗高电机有限公司 | One kind seals anti-condensation connection box for motor |
| CN207265919U (en) * | 2017-10-12 | 2018-04-20 | 中车株洲电力机车研究所有限公司 | A kind of electric machine controller |
| CN207353971U (en) * | 2017-08-18 | 2018-05-11 | 郑州宇通客车股份有限公司 | A kind of motor anti-dewing structure |
| CN209233635U (en) * | 2018-12-04 | 2019-08-09 | 菲仕绿能科技(北京)有限公司 | A kind of junction box structure of electrical machine |
| CN110943568A (en) * | 2019-12-12 | 2020-03-31 | 凯博易控车辆科技(苏州)股份有限公司 | Prevent condensation motor |
| US20200195086A1 (en) * | 2016-11-11 | 2020-06-18 | Mitsubishi Heavy Industries Thermal Systems, Ltd. | Capacitor unit, and electric compressor |
-
2020
- 2020-09-07 CN CN202010926811.XA patent/CN112152366A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060119197A1 (en) * | 2003-10-03 | 2006-06-08 | Franklin Electric Co., Inc. | Electric motors for washdown, food processing, and chemical applications |
| CN205960577U (en) * | 2016-07-15 | 2017-02-15 | 珠海格力电器股份有限公司 | Compressor and compressor terminal box mounting structure |
| US20200195086A1 (en) * | 2016-11-11 | 2020-06-18 | Mitsubishi Heavy Industries Thermal Systems, Ltd. | Capacitor unit, and electric compressor |
| CN207353971U (en) * | 2017-08-18 | 2018-05-11 | 郑州宇通客车股份有限公司 | A kind of motor anti-dewing structure |
| CN207098833U (en) * | 2017-08-21 | 2018-03-13 | 苏州朗高电机有限公司 | One kind seals anti-condensation connection box for motor |
| CN207265919U (en) * | 2017-10-12 | 2018-04-20 | 中车株洲电力机车研究所有限公司 | A kind of electric machine controller |
| CN209233635U (en) * | 2018-12-04 | 2019-08-09 | 菲仕绿能科技(北京)有限公司 | A kind of junction box structure of electrical machine |
| CN110943568A (en) * | 2019-12-12 | 2020-03-31 | 凯博易控车辆科技(苏州)股份有限公司 | Prevent condensation motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019001585A1 (en) | Electric heater | |
| KR20180108494A (en) | Electrical connector and electrical connection arrangement comprising an electrical connector | |
| CN217134545U (en) | Battery and vehicle with same | |
| CN205454320U (en) | Electric vehicle motor controller seals up housing | |
| CN216507940U (en) | Rifle cooling system and rifle that charges charge | |
| KR20190123620A (en) | Apparatus for preventing frozen pipes | |
| CN112152366A (en) | Prevent condensation motor | |
| CN110696651A (en) | Liquid cooling structure of charging terminal | |
| CN115314000A (en) | Combined photovoltaic junction box | |
| CN217623163U (en) | Liquid cooling heat dissipation rifle that charges | |
| JP4193975B2 (en) | Airtight terminal unit | |
| CN105530716A (en) | Heating body assembly and automobile equipped with same | |
| CN218998144U (en) | Vacuum sealed cabin of refrigeration type sCMOS scientific camera | |
| CN213377229U (en) | Insulating box for wet electric dust collector | |
| KR100994254B1 (en) | Double sealed radiating pipe | |
| CN210687409U (en) | Flange plate for water inlet and outlet | |
| CN110418445B (en) | PTC heating single tube, PTC heating core and PTC heater | |
| WO2012139411A1 (en) | Junction box | |
| CN209949666U (en) | Circuit board packaging shell and circuit board device | |
| WO2018133671A1 (en) | Isolated wire rod waterproof structure and electric device provided with same | |
| US20230166611A1 (en) | Charging gun cooling system and charging gun | |
| CN110767482A (en) | Gas-insulated metal-enclosed switch | |
| CN111082641A (en) | Power box and method for assembling power supply of unmanned aerial vehicle | |
| CN219915787U (en) | Cable accessory temperature rise monitoring device | |
| CN219040412U (en) | Semiconductor packaging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201229 |
|
| RJ01 | Rejection of invention patent application after publication |