CN103308203A - Superheat sensor - Google Patents
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- CN103308203A CN103308203A CN2013100818379A CN201310081837A CN103308203A CN 103308203 A CN103308203 A CN 103308203A CN 2013100818379 A CN2013100818379 A CN 2013100818379A CN 201310081837 A CN201310081837 A CN 201310081837A CN 103308203 A CN103308203 A CN 103308203A
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Abstract
A superheat sensor includes a housing, a pressure sensor mounted within the housing, a temperature sensor that is integrated to the pressure sensor, and/or is external to the pressure sensor, a fluid passageway connecting the pressure sensor to a source of superheat fluid, and a processor.
Description
Technical field
In this a kind of every embodiment of fluid detector is described.Specifically, relate to a kind of modified overheat detector in every embodiment of this explanation.
Background technology
Many fluid system applications occasions need be understood the overheated of fluid, in order to optimize the state of fluid system.These systems include but not limited to the HVAC system.The fluid that can be used within these systems includes but not limited to cold-producing medium.
As used in this, " overheated " word is defined as a kind of situation, and wherein regardless of system's pattern, fluid all has the energy that exceeds with respect to the fluid boiling point.This exceeds energy and can be used as the temperature number of degrees or the degree of superheat (overheat) that exceed the fluid boiling point and measured.
Known have a multiple overheated measuring method.Such as, U.S. Patent No. 5070706 has disclosed a kind of overheat detector, and it has an independent unitor for fluid groove path, and the tank circuit is carrying the fluid that will measure its degree of superheat.
U.S. Patent No. 5820262 has disclosed a kind of cold-producing medium detecting device, is used for calculating the super heat value of cold-producing medium material.This kind detecting device has internal pressure detecting device and internal temperature detecting device.
United States Patent (USP) publication No.2011/0192224 has disclosed a kind of overheat detector, has a flexible wallboard, has the inner chamber that injects fluid and heating power therein and is contacted with between the mobile tank circuit of streaming flow wherein, forms an interface.This flexible wallboard is adaptive as can to conduct heat between the mobile tank circuit and inner chamber.
United States Patent (USP) publication No.2011/0222576 has disclosed the method that is used for demarcating overheat detector.
General overheat detector does not possess the fluid pattern resolution characteristic under mensuration, high sensitivity and the wide pressure automatically; Do not store the historical record of the degree of superheat and correlation parameter; Do not generate alarm; And do not provide multiple industry standard form selection scheme.
Therefore, still need a kind of modified detecting device in the art, and overheated identification and measuring method in the HVAC system refrigerant especially in the fluid.
Summary of the invention
The application illustrates a kind of multinomial embodiment of overheat detector.An embodiment of overheat detector comprises: casing; Pressure detector is contained among the casing; Fluid passage is connected to the superheat flow body source with pressure detector; And processor.
In second embodiment, a kind of overheated detection method comprises: the fluid that allows in the lump that the fluid intake spare of overheat detector is connected to a plurality of fluid systems flows to overheat detector from the fluid system that overheat detector connects the place.In the fluid system temperature of fluid by be contained in the internal temperature detecting device within the overheat detector casing and be contained in overheat detector casing outside external temperature detector these two one of detected.The degree of superheat of fluid in the Fluid Computation system then.
In the 3rd embodiment, a kind of overheated detection method comprises: demarcate overheat detector and the fluid intake spare of overheat detector is connected to one of a plurality of fluid systems.Allow fluid to flow to overheat detector from fluid system.The temperature of fluid and measure the fluid pattern of fluid in the fluid system in the test fluid system.The degree of superheat of fluid and definite error condition in the Fluid Computation system then.Store the degree of superheat and relevant parameter and data with alert subsequently.The disconnecting overheat detector and thereupon be connected to a plurality of fluid systems another and do not demarcate overheat detector again.
For the those of skill in the art in this area, read following detailed description the in detail, other every advantages of obviously visible this overheat detector with reference to accompanying drawing.
Description of drawings
Fig. 1 is the skeleton view of general overheat detector first embodiment according to the invention.
Fig. 2 is the viewgraph of cross-section that is shown in general overheat detector among Fig. 1.
Fig. 3 is the facade side elevation of general overheat detector second embodiment.
Fig. 4 is the viewgraph of cross-section of general overheat detector the 3rd embodiment.
Fig. 5 is the decomposition diagram of general overheat detector the 4th embodiment.
Embodiment
The present invention will be illustrated with reference to each specific embodiment of inventing now frequently.But, the present invention can be implemented and should do not taken as be to be confined to every embodiment described herein in his mode of planting.On the contrary, it is thorough and complete for what set forth that these embodiment are provided, and category of the present invention is fully conveyed to the person skilled in the technical field.
Unless otherwise defined, all have the meaning identical with persons of ordinary skill in the technical field of the present invention's common sense at these all used scientific and technological nouns.Be used for term among the instructions of the present invention at this just for each specific embodiment is described but not intention restriction the present invention.As among being used for explanation of the present invention and claims, singulative " " and " this " are also attempted to comprise most forms, unless context is shown in addition clearly.
Unless show in addition, the numeral that all express batching quantity, character such as for the atomic weight among technical descriptioon and the claim, reaction conditions etc., all should be understood to be modified by " approximately " word in all cases.Therefore, unless show in addition, described numeric type character all is approximate value among technical descriptioon and the claim, and they can change according to the required character of seeking to obtain in the every embodiment of the present invention.Though, showing that numeric type scope and the parameter of the vast category of the present invention all is approximate value, the numerical value described in the instantiation is all as far as possible accurately reported.But, any numerical value is comprising certain error inherently, comes from the error of finding in its corresponding measurement inevitably.
As among being used for instructions of the present invention and claims, phrase " general overheat detector " is defined as a kind of overheat detector, it comprises all essential sensors, electronic installation and steering signal automatically to detect the multiple fluid pattern, such as cold-producing medium, and need not to demarcate again, and report is used for the degree of superheat of the fluid pattern multiple commonly used of private residence, industry and technological applications occasion.
Overheat detector according to the invention is a kind of monomer, device that provide for oneself, private, comprise all essential sensors, electronic installation and steering signal automatically to detect the multiple fluid pattern, such as cold-producing medium, and report is used for the degree of superheat of the fluid pattern multiple commonly used of private residence, industry and technological applications occasion.Overheat detector according to the invention adopts the industry standard form to transmit information with efficient one-tenth the manner.It stores this information among a local storage device, is used for retrieves historical data subsequently.Auxiliary data-carrier store can be set, such as by detachable storage card, and via non-desktop computer, such as portable computer.Overheat detector according to the invention also can design to such an extent that provide multiple alarm at some situations to the user, go beyond the scope such as low pressure (fluid leakage), the low and/or high degree of superheat (system's overflow indicator and scope external system efficient indicator), excess pressure (system's overload or critical hardware failure), temperature, and similar state.
Referring now to Fig. 1 and Fig. 2, first embodiment of general overheat detector 10 comprises casing 2, fluid intake spare 14, integrated form pressure and temperature sensor 16, printed circuit board (PCB) (PCB) 18, bakingout process device 20, data report or communication module 22, and I/O (IO) module 24.Will be understood that, can adopt the other base plate that electronic unit is installed and replace PCB18.Can be installed in above the base plate of being made by polymkeric substance, pottery, metal or other suitable materials such as those the electronic unit that includes but not limited to the following stated.
Casing 12 is the objects of sealing of general overheat sensor 10 all or part of parts.Illustrated casing 12 provides the space of a vacuum or gas-tight seal, can be engaged in fluid measurement therein.Illustrated casing 12 comprises main body 26, has aperture 28, and fluid intake spare 14 is packed into wherein; Case lid 30 has aperture 32, and IO module 24 is packed into wherein.If desired, can between main body 26 and case lid 30, the seal (not shown) be set.
The main body 26 of casing 12 and case lid 30 can have any other required size and dimension, and can be made by any required material, such as plastics, metal or pottery.In addition, fluid intake spare 14 can be made by any other required material.
In being shown in the embodiment of Fig. 2, fluid intake spare 14 is brass chipware or pipe fitting, has the thread fluid passage 34 along the center.Fluid intake spare 14 is connected to superheat flow body source (not shown) with integrated form pressure and temperature sensor 16.Fluid intake spare 14 can be the pipe fitting of any pattern, such as 1/4 inch of standard
The mouth of pipe.Also can adopt the fluid intake spare of any other desired form.In addition, each external adapter (not shown) can be attached to fluid intake spare 14 to be connected to the many fluid pipe fitting (not shown) such as each HVAC system of each fluid system.
Illustrated integrated form pressure and temperature sensor 16 is loaded on PCB18 and comprises wide pressure Sensor section 36, hydrodynamic pressure can be converted to electric signal.It is used that the electric signal that generates can be bakingout process device 20 subsequently.As used among instructions of the present invention and the appended every claim, " wide pressure sensor " language is defined as a kind of pressure transducer, and it can bear the various general system pressure scope that appears in the various known refrigerant systems when keeping precision.Pressure sensor part 36 can be the pressure transducer of any pattern, comprise silicon, piezoelectric ceramics, electric capacity and integrated hall effect sensor, and any other can generate the device of pressure electric analogy.In illustrated embodiment, the pressure sensor part 36 of integrated form pressure and temperature sensor 16 is silicon sensors.Shown among Fig. 2, integrated form pressure and temperature sensor 16 directly is exposed to superheated fluid through pressurization via fluid intake spare 14, is used for measuring fast and accurately.
Illustrated integrated form pressure and temperature sensor 16 comprises temperature sensor section 38, can be electric signal with temperature transition.It is used that the electric signal that generates can be bakingout process device 20 subsequently.Illustrated temperature sensor section 38 arranges to such an extent that can measure the internal refrigeration storage liquid temp, and its structure and form design to such an extent that can bear the fluid system temperature of wide region, such as from approximately-50 spending C to the temperature of approximately+125 spending within the C scope, keep acceptable accuracy under a certain certain applications simultaneously.Under some application scenario, acceptable accuracy can be+/-0.5 degree C.Under other application scenarios, acceptable accuracy can be less than or greater than+/-0.5 the degree C a scope.In addition, temperature sensor section 38 can be born the fluid system temperature within from about-25 degree C to about+150 degree C scope.Temperature sensor section 38 can be the temperature sensor of any pattern, comprises thermistor, and thermopair etches into suprabasil resistive element, diode, and perhaps any other can generate the device of the electric analogy of temperature.Preferably, illustrated integrated form pressure and temperature sensor 16 be less relatively and on position near fluid so that the two maximization of response time and measuring accuracy.Will be understood that temperature sensor and pressure transducer can be discrete sensors, as described below.
Illustrated bakingout process device 20 is loaded on PCB18 and is a kind of high resolving power, high precision device, can handle respectively the input signal from pressure sensor part 36 and the temperature sensor section 38 of integrated form pressure and temperature sensor 16; The test fluid pattern; The Fluid Computation degree of superheat; And provide the output valve that to identify the level of having calculated the degree of superheat.Bakingout process device 20 also can be designed to provide other data, such as fluid temperature (F.T.), hydrodynamic pressure, fluid pattern, be kept on a certain machine in the storer through calendar date (such as alarm and on-off historical records), and other required information.Bakingout process device 20 can be designed to a kind of High-resolution Processing device, can be by the pressure transducer of a Dan Li and the temperature sensor of a Dan Li, perhaps by illustrated integrated form pressure and temperature sensor 16, detect and handle in the fluid of the fluid system that general overheat detector 10 will use therewith, in the cold-producing medium such as the HVAC system, system pressure on a large scale and the temperature that may run into.Preferably, bakingout process device 20 keeps high-caliber precision by the disposable demarcation that spreads all over pressure and temperature input service scope.The limiting examples of some bakingout process devices that are suitable for comprises microcontroller, field programmable gate array (FPGA), and has and set and/or the purposes regulation formula integrated circuit (ASIC) of machine external storage and peripherals.
Illustrated communication module 22 is loaded on PCB18, and is a kind of configurable hardware module, can provide the Modbus data of industry standard through the RS485 hardwire backbone network of a hardwire backbone network shown in 40 signals among Fig. 2.If desired, communication module 22 can be passed through communicator such as RS232, I2C, SPI and 4-20mA electric current loop, USB2.0, and bluetooth, the RF module provides Modbus data and other communication protocols, and can provide wireless messages to the mobile phone application scenario.The inside antenna (not shown) can be arranged to support the RF module.Illustrated communication module 22 is very flexible, is enough to support operational other current and following communication protocols.
The hardware interface that illustrated IO module 24 is a reality can receive power input and report data via operational hardwire interface.Common target device can be connected in general overheat sensor 10 via IO module 24, signal is 40 to illustrate among Fig. 2, and include but not limited to: additional temp sensor (such as the temperature sensor 44 that is shown among Fig. 3), the industry standard controller module, portable and notebook computer, mobile phone, and storage card are such as the permanent storage card.
Shown among Fig. 3, external temperature sensor 44 can be connected in IO module 24 via backbone network 40.Equally, external temperature sensor 44 can be placed near the multiple parts of refrigeration system, near evaporator outlet and compressor, and with mensuration evaporator core temperature, exhaust temperature, etc.Will be understood that the external temperature sensor 44 of any requirement can be connected in IO module 24 to measure temperature in inside with at a plurality of parts or device place simultaneously.
Preferably, bakingout process device 20 can be provided by the pressure and temperature input from integrated form pressure and temperature sensor 16 and external temperature sensor 44 that may provide.Bakingout process device 20 can be demarcated with detection and Identification multiple fluid pattern.Bakingout process device 20 can also be with the degree of superheat of height resolution and the arbitrary multiple fluid pattern of accuracy computation.Bakingout process device 20 also can be determined error condition and store the degree of superheat and relevant parameter and data with alert.Bakingout process device 20 can be reported the degree of superheat of the fluid system at overheat detector 10 attaching places then.Bakingout process device 20 can also be reported various auxiliary datas, such as temperature, pressure, fluid pattern, instant messages, alarm, work course etc. data.Preferably, 20 needs of bakingout process device are once demarcated, and after this can calculate the degree of superheat and for any any one that can finish in the above-mentioned each task in the multiple fluid pattern.
In addition, general overheat sensor 10 described herein, 60,70 and 80 embodiment allow to provide real time data to the user such as the contractor.
Referring again to Fig. 3, second embodiment of general overheat sensor illustrates with 60.Illustrated general overheat sensor 60 comprises: casing 12, and fluid intake spare 14, PCB18, bakingout process device (not shown among Fig. 3), communication module (not shown among Fig. 3), IO module 24, internal pressure sensor 62, external temperature sensor 44 is as above-mentioned.As above-mentioned, the external temperature sensor 44 of any requirement can be connected in IO module 24 to measure temperature at a plurality of parts or device place simultaneously.
Referring now to Fig. 4, the 3rd embodiment of general overheat sensor illustrates with 70.Illustrated general overheat sensor 70 comprises casing 12, fluid intake spare 14, PCB18, bakingout process device (not shown among Fig. 4), communication module (not shown among Fig. 4), IO module 24, internal pressure sensor 62, and internal temperature sensor 72.Will be understood that the external temperature sensor 44 of any requirement also can be connected in IO module 24 to measure temperature in inside with at a plurality of parts or device place simultaneously.Except one or more external sensor 44, if desired, general overheat sensor 80 also can comprise one or more target device 42, can be connected in the IO module 24 of general overheat sensor 80 via backbone network 40, as above-mentioned.
Referring now to Fig. 5, the 4th embodiment of general overheat sensor illustrates with 80.Illustrated general overheat sensor 80 comprises: casing 82, fluid intake spare 84, PCB88, bakingout process device 90, communication module 92, and IO module 94.General overheat sensor 80 can comprise integrated form pressure and temperature sensor 16.In addition, general overheat sensor 80 can comprise internal temperature sensor and internal pressure sensor, and the two all is not drawn among Fig. 5, but the two is above all being addressed.Illustrated casing 82 comprises: main body 100, have the aperture (not shown), and fluid intake spare 84 is housed in it; And case lid 102.Seal 104 can be arranged between main body 100 and the case lid 102.If desired, general overheat sensor 70 also can comprise one or more external temperature sensor 44, as above-mentioned, and can comprise one or more target device 42, can be connected in the IO module 24 of general overheat sensor 70 via backbone network 40, as above-mentioned.
The principle of work of the general overheat sensor of this kind and pattern are illustrated in its preferred embodiment.But, should be pointed out that general overheat sensor described herein can not depart from its category and put into practice to be different from specifically the mode of diagram and explanation.
The cross reference of related application
The application requires the U.S. Provisional Application No.61/611 of submission on March 16th, 2012,747 rights and interests.
Claims (20)
1. overheat detector comprises:
Casing;
Pressure transducer is contained within the casing;
Fluid passage is connected to the superheat flow body source with pressure transducer; And
Processor.
2. overheat detector according to claim 1 also comprises fluid intake spare, has to run through the fluid passage that wherein forms, and this fluid intake spare can leave selectively to be connected to a plurality of fluid systems.
3. overheat detector according to claim 1, the wherein electric analogy of pressure transducer generation pressure.
4. overheat detector according to claim 3, wherein pressure transducer is wherein a kind of of silicon, piezoelectric ceramics, electric capacity and integrated hall effect sensor.
5. overheat detector according to claim 2 also comprises the temperature sensor that is contained within the casing.
6. overheat detector according to claim 5 also comprises and designs to such an extent that can transmit data to the communication module of target device.
7. overheat detector according to claim 5, the wherein electric analogy of temperature sensor generation temperature.
8. overheat detector according to claim 7, wherein temperature sensor is thermistor, thermopair, etches into wherein a kind of of suprabasil resistive element and diode.
9. overheat detector according to claim 2 also comprises the external temperature sensor that is electrically connected to processor.
10. overheat detector according to claim 9 also comprises the temperature sensor that is contained within the casing.
11. overheat detector according to claim 9, wherein external temperature sensor designs to such an extent that generate parts for the heat that is attached to fluid system.
12. overheat detector according to claim 1, wherein processor is designed to handle input signal, test fluid pattern, the Fluid Computation degree of superheat from pressure transducer and temperature sensor, output valve that identification calculated the level of the degree of superheat is provided, fluid temperature (F.T.) is provided, hydrodynamic pressure is provided, the fluid pattern is provided, and the historical data among the storer on the machine of being kept at is provided.
13. overheat detector according to claim 1, also comprise design can be via I/O (IO) module of interface report data to the target device.
14. overheat detector according to claim 13, wherein the target device is temperature sensor, controller module, computer, mobile phone and stores a kind of in the khaki.
15. an overheated detection method comprises:
The fluid intake spare of overheat detector is connected to one of a plurality of fluid systems;
Allow fluid to flow to overheat detector from the fluid system that overheat detector connects the place;
Utilization is contained in the internal temperature sensor and one of external temperature sensor that is contained in overheat detector casing outside, the temperature of fluid in the test fluid system within the overheat detector casing; And
The degree of superheat of fluid in the Fluid Computation system.
16. overheated detection method according to claim 15 also comprises the step that adopts the pressure transducer that is contained in the overheat detector box house to come hydrodynamic pressure in the test fluid system.
17. overheated detection method according to claim 16 also comprises and demarcates overheat detector with the step of detection and Identification multiple fluid pattern.
18. overheated detection method according to claim 17 also comprises the step of calculating the degree of superheat any among the multiple fluid pattern.
19. overheated detection method according to claim 15 comprises:
Demarcate overheat detector, allow fluid to flow to overheat detector from the fluid system that overheat detector connects the place afterwards;
The fluid pattern of fluid in the test fluid system, the degree of superheat of fluid in the Fluid Computation system afterwards;
Determine error condition;
Store the degree of superheat and relevant parameter and data with alert; And
The disconnecting overheat detector and subsequently overheat detector is connected among a plurality of fluid systems another and do not need to demarcate again overheat detector.
20. overheated detection method according to claim 19 also comprises any step in report temperature data, pressure data, fluid pattern, instant data, data with alert and the work course data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910593956.XA CN110411596A (en) | 2012-03-16 | 2013-03-15 | Overheat detector |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261611747P | 2012-03-16 | 2012-03-16 | |
| US61/611,747 | 2012-03-16 | ||
| US13/563,017 | 2012-07-31 | ||
| US13/563,017 US9140613B2 (en) | 2012-03-16 | 2012-07-31 | Superheat sensor |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910593956.XA Division CN110411596A (en) | 2012-03-16 | 2013-03-15 | Overheat detector |
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| CN103308203A true CN103308203A (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013100818379A Pending CN103308203A (en) | 2012-03-16 | 2013-03-15 | Superheat sensor |
| CN201910593956.XA Pending CN110411596A (en) | 2012-03-16 | 2013-03-15 | Overheat detector |
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| CN201910593956.XA Pending CN110411596A (en) | 2012-03-16 | 2013-03-15 | Overheat detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771963A (en) * | 2015-09-17 | 2017-05-31 | 盾安美斯泰克股份有限公司 | Test equipment arrangement with superheat controller |
| CN108362052A (en) * | 2016-11-03 | 2018-08-03 | 盾安美斯泰克股份有限公司 | The method that the flow rate of refrigerant is kept while keeping overheating |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112504347A (en) * | 2020-12-10 | 2021-03-16 | 宁波旭日温压仪表有限公司 | High-reliability temperature pressure gauge with integrated axial structure |
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| US5285648A (en) * | 1992-10-21 | 1994-02-15 | General Electric Company | Differential pressure superheat sensor for low refrigerant charge detection |
| CN1673703A (en) * | 2004-03-25 | 2005-09-28 | 株式会社电装 | Pressure sensor having integrated temperature sensor |
| CN2859486Y (en) * | 2005-05-27 | 2007-01-17 | 小田(中山)实业有限公司 | Temperature sensor for electric water kettle temperature measuring |
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2013
- 2013-03-15 CN CN2013100818379A patent/CN103308203A/en active Pending
- 2013-03-15 CN CN201910593956.XA patent/CN110411596A/en active Pending
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| US4545212A (en) * | 1983-07-29 | 1985-10-08 | Mitsubishi Denki Kabushiki Kaisha | Super-heat detector for refrigerating apparatus |
| US5070706A (en) * | 1990-07-10 | 1991-12-10 | Sundstrand Corporation | Superheat sensor with single coupling to fluid line |
| US5285648A (en) * | 1992-10-21 | 1994-02-15 | General Electric Company | Differential pressure superheat sensor for low refrigerant charge detection |
| CN1673703A (en) * | 2004-03-25 | 2005-09-28 | 株式会社电装 | Pressure sensor having integrated temperature sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771963A (en) * | 2015-09-17 | 2017-05-31 | 盾安美斯泰克股份有限公司 | Test equipment arrangement with superheat controller |
| CN108362052A (en) * | 2016-11-03 | 2018-08-03 | 盾安美斯泰克股份有限公司 | The method that the flow rate of refrigerant is kept while keeping overheating |
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| CN110411596A (en) | 2019-11-05 |
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Application publication date: 20130918 |