CN101691956B - Bottom-mounted sensor for solar water heater - Google Patents
Bottom-mounted sensor for solar water heater Download PDFInfo
- Publication number
- CN101691956B CN101691956B CN2009102052813A CN200910205281A CN101691956B CN 101691956 B CN101691956 B CN 101691956B CN 2009102052813 A CN2009102052813 A CN 2009102052813A CN 200910205281 A CN200910205281 A CN 200910205281A CN 101691956 B CN101691956 B CN 101691956B
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- Prior art keywords
- copper pipe
- metal connector
- level
- base
- circuit board
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention discloses a bottom-mounted sensor for a solar water heater, which comprises a base, a circuit board and a sleeve component, wherein the base is fixedly connected with an outer-layer copper pipe through a metal connector of which one end is provided with a screw rod; the top part of the base is provided with a mounting hole which can be matched with the screw rod; the other end of the metal connector is provided with a stepped shaft integrated with the screw rod; the major-diameter part of the stepped shaft is inserted into the outer-layer copper pipe and is adapted in size with an aperture of the outer-layer copper pipe; an interface between the major-diameter part and the screw rod is also provided with an annular lug boss along a circumferential direction; the metal connector is provided with a through hole along a length direction; and the circuit board runs through the through hole to be electrically connected with a cable lead. Compared with the prior art, the bottom-mounted sensor for the solar water heater in the invention is mounted without bolts or welding, the base, the metal connector and the outer-layer copper pipe encapsulated with the circuit board can be conveniently connected into a whole through the metal connector which is used as a connecting part for connecting the outer-layer copper pipe and the base, and thus the operation is more simple and the connection is more convenient.
Description
Technical field
The present invention relates to a kind of sensor device, particularly relate to a kind of be installed in the solar water heater and be used for the sensor that water-level and water-temperature detects.
Background technology
To be the energy that utilizes the sun be heated to the device of high-temperature with water from low temperature with solar water heater, is a kind of heat energy product.Common solar water heater generally is made up of all-glass vacuum thermal-collecting tube, storage tank, support and related accessories, water heater relies on glass heat-collecting vacuum tube that solar energy is converted to heat energy, thermal-collecting tube is subjected to solar radiation surface temperature height, thermal-collecting tube opaco temperature is low, and water just produces temperature difference reaction in the pipe, the principle of utilizing hot water come-up cold water to sink makes the water generates microcirculation and reaches required hot water.
Solar water heater need detect to control the heating-up temperature and the heat time heating time of water heater water level in the water tank and water temperature.Usually, be provided with water-temperature water-level sensor in the water heater and detect water tank temperature and water level height, if any the patent No. is that the Chinese utility model patent " water-temperature water-level sensor on a kind of solar water heater " of ZL200820204172.0 discloses a kind of like this sensor, it comprises the water-temperature water-level sensor circuit that is connected with sensor, described water-temperature water-level sensor circuit is enclosed in the insulating resin, the outer spacer sleeve of described insulating resin is equipped with the stainless steel sleeve pipe that is connected with the water-temperature water-level sensor circuit, is connected with the silica gel circle between described adjacent two stainless steel sleeve pipes.But above-mentioned patent when circuit board breaks down when maybe needing to change, just must be destroyed whole epoxy resin layer because whole sensor circuit is enclosed in the insulating resin, wastes time and energy maintenance difficult; In addition, traditional solar energy sensor mostly is inserts water tank when mounted from the side, and not only inconvenience but also not attractive in appearance is crossed when low when water level, might can't measure, and can not guarantee the accuracy of measuring.
In order to improve the security that water heater uses, the sensor that just like the patent No. is the utility model patent " underneath type sensor " of ZL200420084033.0 immerses high temperature resistant part in the water, circuit board section is away from water source and high-temperature water tank, sensor is to insert the water tank from the bottom, compact conformation, but the sensor measurement water level of this patent and the water level pipe of temperature and temperature-sensitive pipe are directly to expose in water, be easy to wearing and tearing and accumulation dirt, and, because be that underneath type is installed, be sealed in silicone rubber O-ring between the preformed hole of sensor holder and water tank bottom in that use long afterwards can be because of aging, oxidation and wearing and tearing, water will ooze out from the gap between the preformed hole of sensor holder and water tank bottom, cause the damage of circuit board, cause whole sensor to be damaged and influence the use of water heater.
Summary of the invention
Technical problem to be solved by this invention is a kind of long service life to be provided at above-mentioned prior art present situation, to install more convenient and can effectively to prevent the sensor for solar water heater that sealing oozes out from water tank bottom, this sensor for solar water heater adopts the mounting means that inserts water tank from the bottom, can direct supporting installation when the solar water heater complete machine dispatches from the factory, accuracy of detection is higher.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: this bottom-mounted sensor for solar water heater includes
Base is installed in the water tank bottom of solar water heater, is provided with the cable tail that links to each other with sensor body in this base;
Circuit board is packaged with the water-level and water-temperature control circuit that is electrically connected with described cable tail, and the top of this circuit board connects the heat conduction copperhead, also is connected with water level resistance and NTC temperature detecting resistance on this circuit board; And
Thimble assembly, include internal layer copper pipe, the heat-shrinkable T bush between adjacent described internal layer copper pipe that the compartment of terrain is socketed in described circuit board outside and be socketed in outer copper pipe outside the described heat-shrinkable T bush, described internal layer copper pipe and described water-level and water-temperature control circuit are connected and form level electrode;
It is characterized in that: be fixedly linked by a metal connector as public pole between described base and the outer copper pipe, wherein, one capitiform of described metal connector becomes screw rod, the top of described base offers the installing hole that matches with described screw rod, described screw rod passes described installing hole and realizes being threaded with the nut that is arranged in this base, the other end of described metal connector forms the multidiameter that includes large-diameter portion and minor diameter part, the large-diameter portion of this multidiameter and described screw rod are one-body molded, and, described large-diameter portion insert within the described outer copper pipe and and the pore size of this skin copper pipe suitable; The annular boss that described large-diameter portion and described screw rod offset along the bottom that circumferentially also is formed with respectively with the top of described base and described outer copper pipe at interface; Described metal connector offers through hole along its length, and described circuit board passes described through hole and realizes and being electrically connected of described cable tail.
In order further to improve the support strength and the corrosion resistance of sensor, thimble assembly of the present invention adopts the multiple layer of copper tubular construction, as preferably, this thimble assembly also includes time internal layer copper pipe, described internal layer copper pipe is set in outside the described internal layer copper pipe and with described water-level and water-temperature control circuit and is connected, and connects by described heat-shrinkable T bush between the described time adjacent internal layer copper pipe; And, also be arranged with the middle level copper pipe outside the described heat-shrinkable T bush, be arranged with outer heat-shrinkable T bush again outside the copper pipe of described middle level.
In order to improve the accuracy of measurement, satisfy measurement demand to different water levels, described thimble assembly can be designed to multistage level electrode (secondary or more than the secondary), as preferably, the present invention adopts the level Four level electrode, wherein, described circuit board is a first order level electrode near an end of described metal connector, the end that described circuit board is connected with copperhead is a fourth stage level electrode, outside the circuit board between two adjacent level electrodes from inside to outside be arranged with internal layer copper pipe, inferior internal layer copper pipe, heat-shrinkable T bush, middle level copper pipe and outer heat-shrinkable T bush.
For the ease of the connection between outer copper pipe and the base, multidiameter is made in described metal connector other end, outer copper pipe can be resisted against on the step surface of multidiameter, do not need the screw just can the outer copper pipe of fastening installation, as preferably, the outer heat-shrinkable T bush that is positioned on the described first order level electrode includes the adapter sleeve that can insert for the minor diameter part of described metal connector, and the boundary step surface of the end of this adapter sleeve and the large-diameter portion of described metal connector and minor diameter part offsets.So, the minor diameter part of metal connector inserts in the adapter sleeve of the pairing outer heat-shrinkable T bush of first order level electrode, make and the more reliable and sealing of connection between metal connector and the outer copper pipe also can make things convenient for the assembling between metal connector and the outer copper pipe to connect.
In order further to improve the sealing that connects, anti-sealing is from the junction seepage of metal connector and base, also be provided with sealing rubber ring between the annular boss bottom of described metal connector and the described base top, like this, when sensor was installed on the water tank, the annular boss of metal connector just can be pushed down sealing rubber ring downwards and prevent downward infiltration.
Considering is threaded exists certain clearance, infiltrate sensor body for fear of water by base cavity pocket, described base at position that the screw rod that is positioned at described metal connector is connected with described nut also embedding resistant to elevated temperatures epoxide-resin glue is arranged, make screw rod and nut connect as one, further improve sealing, the service life of improving sensor.
Compared with prior art, the invention has the advantages that: by the attaching parts of a metal connector as outer copper pipe of realization and base, this metal connector one end is provided with the screw rod that can be threaded with the nut realization that is positioned at base, the other end of this metal connector then is provided with and can realizes the multidiameter that no screw is pegged graft with outer copper pipe, between multidiameter and screw rod, also be provided with annular boss, and, being encapsulated in circuit board in the outer copper pipe can also pass metal connector and be electrically connected with the sensor cable lead-in wire that is positioned at base, when mounted, need not to adopt screw or weld just can be very easily with base, metal connector connects as one with the outer copper pipe that is packaged with circuit board, operate more simply, connect more convenient; And, owing to respectively be formed with step surface between screw rod, annular boss and the multidiameter of metal connector, can play anti-sealing effectively from bottom leaky, improve the security reliability and the service life of sensor; In addition, metal connector of the present invention also uses as public electrode simultaneously, and overall structure is compact more, has simplified circuit structure, makes things convenient for installation and maintenance.
Description of drawings
Fig. 1 is the perspective view of the embodiment of the invention.
Fig. 2 is the three-dimensional exploded view of the embodiment of the invention.
Fig. 3 is the sectional arrangement drawing of the embodiment of the invention.
Fig. 4 is the metal connector structure cutaway view of the embodiment of the invention.
Fig. 5 is the partial perspective cutaway view (syndeton of base and metal connector) of the embodiment of the invention.
Fig. 6 is the partial perspective cutaway view (syndeton of fourth stage level electrode and copperhead) of the embodiment of the invention.
Fig. 7 is the level electrode structural representation of the embodiment of the invention.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
As Fig. 1～shown in Figure 7, be specific embodiments of the invention, this sensor is to insert the formula sensor for solar water heater in an end, include the stainless steel base 1 that is installed in the solar water heater water tank bottom, this base 1 is cylindric, is provided with the cable tail 2 that links to each other with sensor body in the base 1, the top of base 1 offers installing hole 11, the bottom of base 1 is connected with bottom 12, and bottom 12 is provided with wire bushing 13, but offers the current supply cable aperture 131 that 2 one ends pass that goes between on the wire bushing 13.
Wherein, the compartment of terrain is arranged with internal layer copper pipe 41 and time internal layer copper pipe 42 outside the circuit board 3, inferior internal layer copper pipe 42 is set in outside the internal layer copper pipe 41, connect by heat-shrinkable T bush 43 between the adjacent inferior internal layer copper pipe 42, and, internal layer copper pipe 41 and time internal layer copper pipe 42 be welded on respectively on the circuit board 3 and and the water-level and water-temperature control circuit be connected and form level electrode; For support force that further strengthens sensor and the resistance to corrosion that improves circuit board, outside heat-shrinkable T bush 43, also be socketed with middle level copper pipe 44, be socketed with outer heat-shrinkable T bush 45 outside the middle level copper pipe 44 again, in order effectively to improve the service life of sensor, the internal layer copper pipe and time internal layer copper pipe that form level electrode adopt copper pipe nickel plating respectively;
Present embodiment has the level Four level electrode, initialization circuit plate 3 is first order level electrode A near an end of metal connector 6, the end that circuit board 3 is connected with copperhead 31 is fourth stage level electrode D, between first order level electrode A and fourth stage level electrode D, be followed successively by second level level electrode B and the 3rd utmost point level electrode C, be arranged with internal layer copper pipe 41 from inside to outside successively outside the circuit board 3 between two adjacent level electrodes, inferior internal layer copper pipe 42, heat-shrinkable T bush 43, middle level copper pipe 44 and outer heat-shrinkable T bush 45, the outside of level Four level electrode also is socketed with an outer copper pipe 5 jointly, outer copper pipe 5 not only plays the effect of protection level electrode, also plays with base 1 effect that is connected is installed;
Because the structure that the circuit board 3 of present embodiment has adopted the multilayer copper pipe to coat; make the support of whole sensor be not easy distortion more effectively; and; what the heat-shrinkable T bush 43 of present embodiment between inferior internal layer copper pipe 42 and middle level copper pipe 44 adopted is the double wall heat Heat-Shrinkable Tubings; except that the insulating protection that the ordinary hot Heat-Shrinkable Tubings is provided; also can provide functions such as waterproof, protection against the tide, seal protection and against shock, for circuit board provides better anti-corrosion protection.
The annular boss 64 that large-diameter portion 62 and screw rod 61 offset along the bottom that circumferentially also is formed with respectively with the top of base 1 and outer copper pipe 5 at interface, also be provided with O shape sealing rubber ring 7 between the bottom of annular boss 64 and the top of base, sealing rubber ring 7 adopts high-temperature resistant rubber, heatproof can reach 150 degree, when sensor was installed on the water tank, the annular boss 64 of metal connector 6 just can be pushed down sealing rubber ring 7 downwards and prevent downward infiltration;
Considering is threaded exists certain clearance, infiltrate sensor body for fear of water by base 1 cavity, base at position that the screw rod 61 that is positioned at metal connector 6 is connected with nut 8 also embedding resistant to elevated temperatures epoxide-resin glue 9 is arranged, make screw rod 61 and nut 8 connect as one, further improve sealing, the service life of improving sensor.
Present embodiment is owing to adopted the multiple layer of copper Manifold technology, make sensor that good support strength and decay resistance be arranged, and double-deck elevated temperature heat Heat-Shrinkable Tubings technology and high-temperature-resistant epoxy resin glue have been adopted, can guarantee that sensor does not inwardly reach downward infiltration, and sensor is connected in aggregates with the stainless steel base, thereby installs and uses when making things convenient for the water heater complete machine to dispatch from the factory.
Claims (6)
1. a bottom-mounted sensor for solar water heater includes
Base (1) is installed in the water tank bottom of solar water heater, is provided with the cable tail (2) that links to each other with sensor body in this base (1);
Circuit board (3) is packaged with the water-level and water-temperature control circuit that is electrically connected with described cable tail (2), and the top of this circuit board (3) connects heat conduction copperhead (31), also is connected with water level resistance and NTC temperature detecting resistance on this circuit board (3); And
Thimble assembly, include the compartment of terrain and be socketed in the outside internal layer copper pipe (41) of described circuit board (3), be positioned at the heat-shrinkable T bush (43) between the adjacent described internal layer copper pipe (41) and be socketed in outer copper pipe (5) outside the described heat-shrinkable T bush (43), described internal layer copper pipe (41) and described water-level and water-temperature control circuit are connected and form level electrode;
It is characterized in that: be fixedly linked by a metal connector as public pole (6) between described base (1) and the outer copper pipe (5), wherein, one capitiform of described metal connector (6) becomes screw rod (61), the top of described base (1) offers the installing hole (11) that matches with described screw rod (61), described screw rod (61) passes described installing hole (11) and realizes being threaded with the nut (8) that is arranged in this base (1), the other end of described metal connector (6) forms the multidiameter that includes large-diameter portion (62) and minor diameter part (63), large-diameter portion of this multidiameter (62) and described screw rod (61) are one-body molded, and, described large-diameter portion (62) insert within the described outer copper pipe (5) and and the pore size of this skin copper pipe (5) suitable;
The annular boss (64) that described large-diameter portion (62) and described screw rod (61) offset along the bottom that circumferentially also is formed with respectively with the top of described base (1) and described outer copper pipe (5) at interface;
Described metal connector (6) offers through hole (65) along its length, and described circuit board (3) passes described through hole (65) and realizes and being electrically connected of described cable tail (2).
2. bottom-mounted sensor for solar water heater according to claim 1, it is characterized in that: described thimble assembly also includes time internal layer copper pipe (42), described internal layer copper pipe (42) is set in outside the described internal layer copper pipe (41) and with described water-level and water-temperature control circuit and is connected, and connects by described heat-shrinkable T bush (43) between the described time adjacent internal layer copper pipe; And, also be arranged with middle level copper pipe (44) outside the described heat-shrinkable T bush (43), be arranged with outer heat-shrinkable T bush (45) outside the described middle level copper pipe (44) again.
3. bottom-mounted sensor for solar water heater according to claim 2, it is characterized in that: described thimble assembly has the level Four level electrode, wherein, described circuit board (3) is first order level electrode (A) near an end of described metal connector (6), the end that described circuit board (3) is connected with copperhead (31) is fourth stage level electrode (D), outside the circuit board (3) between two adjacent level electrodes from inside to outside be arranged with internal layer copper pipe (41), inferior internal layer copper pipe (42), heat-shrinkable T bush (43), middle level copper pipe (44) and outer heat-shrinkable T bush (45).
4. bottom-mounted sensor for solar water heater according to claim 3, it is characterized in that: be positioned at outer heat-shrinkable T bush (45) on the described first order level electrode and include the adapter sleeve (451) that the minor diameter part (63) for described metal connector (6) inserts, the large-diameter portion (62) of end of this adapter sleeve (451) and described metal connector (6) offsets with the boundary step surface (631) of minor diameter part (63).
5. according to the described bottom-mounted sensor for solar water heater of arbitrary claim in the claim 1～4, it is characterized in that: also be provided with sealing rubber ring (7) between annular boss (64) bottom of described metal connector (6) and described base (1) top.
6. bottom-mounted sensor for solar water heater according to claim 5 is characterized in that: described base (1) at position that the screw rod that is positioned at described metal connector (6) (61) is connected with described nut (8) also embedding epoxide-resin glue (9) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102052813A CN101691956B (en) | 2009-10-13 | 2009-10-13 | Bottom-mounted sensor for solar water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102052813A CN101691956B (en) | 2009-10-13 | 2009-10-13 | Bottom-mounted sensor for solar water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101691956A CN101691956A (en) | 2010-04-07 |
| CN101691956B true CN101691956B (en) | 2011-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102052813A Expired - Fee Related CN101691956B (en) | 2009-10-13 | 2009-10-13 | Bottom-mounted sensor for solar water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101691956B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832746A (en) * | 2011-06-17 | 2012-12-19 | 永济新时速电机电器有限责任公司 | Rotating speed measurement device and motor |
| CN103474829B (en) * | 2013-09-13 | 2015-10-14 | 遵义市飞宇电子有限公司 | A kind of sealing suspension connector |
| CN104315717B (en) * | 2014-10-11 | 2017-04-05 | 东莞市天合机电开发有限公司 | A kind of device of closure heat-exchanging water tank ellipse installing hole |
| CN106996815B (en) * | 2016-07-26 | 2023-11-28 | 东风汽车电子有限公司 | Water level sensor |
| CN107345928A (en) * | 2017-08-28 | 2017-11-14 | 云南神谷科技股份有限公司 | A kind of soil pH value sensor with metal electrode |
| CN112484761A (en) * | 2020-11-11 | 2021-03-12 | 谢明波 | High-performance sensor anti-pollution device and anti-pollution method thereof |
-
2009
- 2009-10-13 CN CN2009102052813A patent/CN101691956B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101691956A (en) | 2010-04-07 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20100407 Assignee: Cixi Wanneng Electronics Co., Ltd. Assignor: Ningbo New-morning Green Lighting Technology Co., Ltd. Contract record no.: 2012330000481 Denomination of invention: Bottom-mounted sensor for solar water heater Granted publication date: 20110420 License type: Exclusive License Record date: 20120829 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20141013 |
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| EXPY | Termination of patent right or utility model |