CN104457396A - Heat exchanger anti-freezing method and system - Google Patents
Heat exchanger anti-freezing method and system Download PDFInfo
- Publication number
- CN104457396A CN104457396A CN201410664766.XA CN201410664766A CN104457396A CN 104457396 A CN104457396 A CN 104457396A CN 201410664766 A CN201410664766 A CN 201410664766A CN 104457396 A CN104457396 A CN 104457396A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- temperature
- threshold value
- predetermined threshold
- destination object
- 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
Landscapes
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The embodiment of the invention provides a heat exchanger anti-freezing method and system. A heating device is fixed to a shell of a heat exchanger. The temperature of a target object is collected. The temperature of the target object is the environment temperature or the water temperature of a water outlet of the heat exchanger. When the temperature of the target object is lower than a first-class preset threshold value corresponding to the target object, the heating device fixed to the shell of the heat exchanger is started up to heat the heat exchanger, so the situation that the heat exchanger is expanded and damaged due to the fact that liquid in the heat exchanger freezes is avoided.
Description
Technical field
The present invention relates to technical field of heat exchangers, in particular, relate to a kind of heat exchanger anti-freezing method and system.
Background technology
Usually, heat exchanger is used for carrying out refrigerant and liquid heat exchange, there will be the situation of icing and swollen bad heat exchanger when fluid temperature is too low in heat exchanger.At present conventional solution is, opens water pump and comes antifreeze by liquid-circulating, but, inventor realizing finding in process of the present invention, if long term ambient temperature is too low, liquid still likely icing and swollen bad heat exchanger.
Therefore, how to prevent the icing and swollen bad heat exchanger of liquid in heat exchanger from becoming problem demanding prompt solution.
Summary of the invention
The object of the present invention is to provide a kind of heat exchanger anti-freezing method and system, to prevent the icing and swollen bad heat exchanger of liquid in heat exchanger.
For achieving the above object, following technical scheme is embodiments provided:
A kind of heat exchanger anti-freeze system, comprising:
Heater, is fixed on the shell of described heat exchanger;
First harvester, for gathering the temperature of destination object, the temperature of described destination object is the water temperature of environment temperature or heat exchanger delivery port;
First control device, for when the temperature of described destination object is lower than the first kind predetermined threshold value corresponding with described destination object, opens described heater to heat described heat exchanger.
Said system, preferably, when the temperature of described destination object is environment temperature, described system also comprises:
Second harvester, for gathering the water temperature of described heat exchanger delivery port;
Second control device, for when the water temperature of described delivery port is greater than Equations of The Second Kind predetermined threshold value, closes described heater.
Said system, preferably, when the temperature of described destination object is the water temperature of described heat exchanger delivery port, described system also comprises:
3rd control device, for when the water temperature of described delivery port is greater than Equations of The Second Kind predetermined threshold value, cuts out described heater.
Said system, preferably, the Heat Conduction Material that described heater has viscose by surface is fixed on described outer cover of heat exchanger.
Said system, preferably, described system also comprises:
Input unit, for inputting first kind predetermined threshold value and/or Equations of The Second Kind predetermined threshold value.
Said system, preferably, described system also comprises:
Display unit, for showing described first kind predetermined threshold value and/or Equations of The Second Kind predetermined threshold value.
A kind of heat-exchange system, comprising: heat exchanger and the heat exchanger winterization system as above described in any one.
A kind of heat exchanger anti-freezing method, comprising:
Gather the temperature of destination object, the temperature of described destination object is the water temperature of environment temperature or heat exchanger delivery port;
When the temperature of described destination object is lower than the first kind predetermined threshold value corresponding with described destination object, the heater that unlatching is fixed on described outer cover of heat exchanger is to heat described heat exchanger.
Said method, preferably, when the temperature of described destination object is environment temperature, described method also comprises:
Gather the water temperature of described heat exchanger delivery port;
When the water temperature of described delivery port is greater than Equations of The Second Kind predetermined threshold value, close described heater.
Said method, preferably, when the temperature of described destination object is the water temperature of described heat exchanger delivery port, described method also comprises:
When the water temperature of described delivery port is greater than Equations of The Second Kind predetermined threshold value, close described heater.
Known by above scheme, a kind of heat exchanger anti-freezing method that the embodiment of the present invention provides and system, the shell of heat exchanger is fixed a heater, and gather the temperature of destination object, the temperature of described destination object is the water temperature of environment temperature or heat exchanger delivery port; When the temperature of described destination object is lower than the first kind predetermined threshold value corresponding with described destination object, the heater that unlatching is fixed on described outer cover of heat exchanger to heat described heat exchanger, thus prevents liquid in heat exchanger from freezing and then swollen bad heat exchanger.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
A kind of structural representation of the heat exchanger anti-freeze system that Fig. 1 provides for the embodiment of the present invention;
The another kind of structural representation of the heat exchanger anti-freeze system that Fig. 2 provides for the embodiment of the present invention;
Another structural representation of the heat exchanger anti-freeze system that Fig. 3 provides for the embodiment of the present invention;
Another structural representation of the heat exchanger anti-freeze system that Fig. 4 provides for the embodiment of the present invention;
Another structural representation of the heat exchanger anti-freeze system that Fig. 5 provides for the embodiment of the present invention;
A kind of realization flow figure of the heat exchanger anti-freezing method that Fig. 6 provides for the embodiment of the present invention;
The another kind of realization flow figure of the heat exchanger anti-freezing method that Fig. 7 provides for the embodiment of the present invention;
Another realization flow figure of the heat exchanger anti-freezing method that Fig. 8 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, a kind of structural representation of the heat exchanger anti-freeze system that Fig. 1 provides for the embodiment of the present invention, can comprise:
Heater 11, the first harvester 12 and first control device 13; First control device 13 is connected with the first harvester 12 with heater 11 respectively, wherein,
Heater 11 is fixed on the shell of heat exchanger, and concrete fixed position is not specifically limited.Optionally, by parts such as bolts, heater 11 can be fixed on the shell of heat exchanger.
First harvester 12 is for gathering the temperature of destination object, and the temperature of described destination object is the water temperature of environment temperature or heat exchanger delivery port;
First control device 13, for when the temperature of described destination object is lower than the first kind predetermined threshold value corresponding with described destination object, opens described heater to heat described heat exchanger.
In the embodiment of the present invention, first kind predetermined threshold value is used for determining whether open heater.Destination object is different, and corresponding first kind predetermined threshold value is also different.For sake of convenience, first kind predetermined threshold value corresponding for environment temperature is designated as the first predetermined threshold value below, first kind predetermined threshold value corresponding for heat exchanger delivery port water temperature is designated as the second predetermined threshold value, and in the embodiment of the present invention, the first predetermined threshold value is less than the second predetermined threshold value.
That is, if the temperature of destination object is environment temperature, first control device 13, for when environment temperature is lower than the first predetermined threshold value, opens heater.If temperature corresponding to target is the water temperature of heat exchanger delivery port, then first control device 13 is for when the water temperature of heat exchanger delivery port is less than the second predetermined threshold value, opens heater.
The heat exchanger anti-freeze system that the embodiment of the present invention provides, the shell of heat exchanger is fixed a heater, and gather the temperature of destination object, the temperature of described destination object is the water temperature of environment temperature or heat exchanger delivery port; When the temperature of described destination object is lower than the first kind predetermined threshold value corresponding with described destination object, the heater that unlatching is fixed on described outer cover of heat exchanger to heat described heat exchanger, thus prevents liquid in heat exchanger from freezing and then swollen bad heat exchanger.
In above-described embodiment, optionally, when not needing heat exchanger to heat (during as climate warming), can manual-lock heater.
When the temperature of described destination object is environment temperature, on basis embodiment illustrated in fig. 1, the another kind of structural representation of the heat exchanger anti-freeze system that the application provides as shown in Figure 2, further, can also comprise:
Second harvester 21 and second control device 22; Wherein,
Second harvester 21 is for gathering the water temperature of described heat exchanger delivery port;
Second control device 22, for when the water temperature of described delivery port is greater than Equations of The Second Kind predetermined threshold value, closes described heater, heats to stop heat exchanger.
Equations of The Second Kind predetermined threshold value is used for judging whether close heater.In the embodiment of the present invention, the water temperature according to heat exchanger delivery port judges whether to close heater, achieves opening and closing automatically of heater.
Wherein, the function of second control device 22 and the function of first control device 13 can be in one apparatus integrated, realized the function of second control device 22 and first control device 13 by same device.
When the temperature of described destination object is the water temperature of heat exchanger delivery port, on basis embodiment illustrated in fig. 1, another structural representation of the heat exchanger anti-freeze system that the application provides as shown in Figure 3, further, can also comprise:
3rd control device 31, for when the water temperature of described delivery port is greater than Equations of The Second Kind predetermined threshold value, cuts out described heater, heats to stop heat exchanger.
Embodiments provide a kind of another kind of implementation that can open and close automatically heater.
Wherein, the function of the 3rd control device 31 and the function of first control device 13 can be in one apparatus integrated, realized the function of the 3rd control device 31 and first control device 13 by same device.
In above-described embodiment, optionally, heater 11 can be fixed on described outer cover of heat exchanger by the surperficial Heat Conduction Material with viscose.Concrete, heater 11 and heat exchanger wrap up by the Heat Conduction Material that can have a viscose by surface, wherein, heater 11 between heat exchanger and Heat Conduction Material, to make heat exchanger can thermally equivalent.
In above-described embodiment, optionally, first kind predetermined threshold value can be the predetermined threshold value that system carries.
First kind predetermined threshold value also can by user according to actual conditions sets itself.Concrete, on basis embodiment illustrated in fig. 1, another structural representation of the heat exchanger anti-freeze system that the application provides as shown in Figure 4, can also comprise:
Input unit 41, for inputting first kind predetermined threshold value and/or Equations of The Second Kind predetermined threshold value.
User can according to actual environment temperature and the self-defined first kind predetermined threshold value of practical situation and/or Equations of The Second Kind predetermined threshold value.Thus make the more realistic demand of control of heat exchanger anti-freeze system.
Concrete, user can the self-defining predetermined threshold value of choice for use, also can choice for use system default value, i.e. the threshold value that carries of system.Preferably, if user have input first kind predetermined threshold value and/or Equations of The Second Kind predetermined threshold value by input unit 41, the predetermined threshold value that then control device (comprising first control device 13, second control device 22 and the 3rd control device 31) inputs with user is as the criterion, otherwise is as the criterion with system default value.
It should be noted that, input unit 41 also go for Fig. 2 and embodiment illustrated in fig. 3 in.
Further, conveniently user judges that whether the threshold value inputted is correct, and on basis embodiment illustrated in fig. 4, another structural representation of the heat exchanger anti-freeze system that the application provides as shown in Figure 5, can also comprise:
Display unit 51, for showing described first kind predetermined threshold value and/or Equations of The Second Kind predetermined threshold value.
The application also provides a kind of heat-exchange system, and this heat-exchange system comprises heat exchanger, also comprises the heat exchanger anti-freeze system as above shown in any figure.
Corresponding with system embodiment, the application also provides a kind of heat exchanger anti-freezing method, and a kind of realization flow figure of the heat exchanger anti-freezing method that the application provides as shown in Figure 6, can comprise:
Step S61: the temperature gathering destination object, the temperature of described destination object is the water temperature of environment temperature or heat exchanger delivery port;
Step S62: when the temperature of described destination object is lower than the first kind predetermined threshold value corresponding with described destination object, the heater that unlatching is fixed on described outer cover of heat exchanger is to heat described heat exchanger.
In the embodiment of the present invention, first kind predetermined threshold value is used for determining whether open heater.Destination object is different, and corresponding first kind predetermined threshold value is also different.For sake of convenience, first kind predetermined threshold value corresponding for environment temperature is designated as the first predetermined threshold value below, first kind predetermined threshold value corresponding for heat exchanger delivery port water temperature is designated as the second predetermined threshold value, and in the embodiment of the present invention, the first predetermined threshold value is less than the second predetermined threshold value.
That is, if the temperature of destination object is environment temperature, then when environment temperature is lower than the first predetermined threshold value, open heater.If temperature corresponding to target is the water temperature of heat exchanger delivery port, then when the water temperature of heat exchanger delivery port is less than the second predetermined threshold value, open heater.
The heat exchanger anti-freezing method that the embodiment of the present invention provides, the shell of heat exchanger is fixed a heater, and gather the temperature of destination object, the temperature of described destination object is the water temperature of environment temperature or heat exchanger delivery port; When the temperature of described destination object is lower than the first kind predetermined threshold value corresponding with described destination object, the heater that unlatching is fixed on described outer cover of heat exchanger to heat described heat exchanger, thus prevents liquid in heat exchanger from freezing and then swollen bad heat exchanger.
When the temperature of described destination object is environment temperature, on basis embodiment illustrated in fig. 6, the another kind of realization flow figure of the heat exchanger anti-freezing method that the embodiment of the present application provides as described in Figure 7, can also comprise:
Step S71: the water temperature gathering described heat exchanger delivery port;
In the embodiment of the present invention, except gathering environment temperature, the also water temperature of heat collecting exchanger delivery port.
Step S72: when the water temperature of described delivery port is greater than Equations of The Second Kind predetermined threshold value, close described heater, heat to stop heat exchanger.
In the embodiment of the present invention, the water temperature according to heat exchanger delivery port judges whether to close heater, achieves opening and closing automatically of heater.
When the temperature of described destination object is the water temperature of heat exchanger delivery port, on basis embodiment illustrated in fig. 6, another realization flow figure of the heat exchanger anti-freezing method that the embodiment of the present application provides as described in Figure 8, can also comprise:
Step S81: when the water temperature of described delivery port is greater than Equations of The Second Kind predetermined threshold value, close described heater, heat to stop heat exchanger.
In the embodiment of the present invention, achieved the automatic control that heater is opened and closed by the water temperature of heat exchanger delivery port.
Those of ordinary skill in the art can recognize, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with the combination of electronic hardware or computer software and electronic hardware.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
In several embodiments that the application provides, should be understood that disclosed system and method can realize by another way.Such as, system embodiment described above is only schematic, such as, the division of described device, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple device or assembly can in conjunction with or another device can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the INDIRECT COUPLING of device or communication connection can be electrical, machinery or other form.
In addition, each control device in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a heat exchanger anti-freeze system, is characterized in that, comprising:
Heater, is fixed on the shell of described heat exchanger;
First harvester, for gathering the temperature of destination object, the temperature of described destination object is the water temperature of environment temperature or heat exchanger delivery port;
First control device, for when the temperature of described destination object is lower than the first kind predetermined threshold value corresponding with described destination object, opens described heater to heat described heat exchanger.
2. system according to claim 1, is characterized in that, when the temperature of described destination object is environment temperature, described system also comprises:
Second harvester, for gathering the water temperature of described heat exchanger delivery port;
Second control device, for when the water temperature of described delivery port is greater than Equations of The Second Kind predetermined threshold value, closes described heater.
3. system according to claim 1, is characterized in that, when the temperature of described destination object is the water temperature of described heat exchanger delivery port, described system also comprises:
3rd control device, for when the water temperature of described delivery port is greater than Equations of The Second Kind predetermined threshold value, cuts out described heater.
4. the system according to claim 1-3 any one, is characterized in that, the Heat Conduction Material that described heater has viscose by surface is fixed on described outer cover of heat exchanger.
5. the system according to claim 1-3 any one, is characterized in that, described system also comprises:
Input unit, for inputting first kind predetermined threshold value and/or Equations of The Second Kind predetermined threshold value.
6. system according to claim 5, is characterized in that, described system also comprises:
Display unit, for showing described first kind predetermined threshold value and/or Equations of The Second Kind predetermined threshold value.
7. a heat-exchange system, is characterized in that, comprising: heat exchanger and the heat exchanger winterization system as described in claim 1-6 any one.
8. a heat exchanger anti-freezing method, is characterized in that, comprising:
Gather the temperature of destination object, the temperature of described destination object is the water temperature of environment temperature or heat exchanger delivery port;
When the temperature of described destination object is lower than the first kind predetermined threshold value corresponding with described destination object, the heater that unlatching is fixed on described outer cover of heat exchanger is to heat described heat exchanger.
9. method according to claim 8, is characterized in that, when the temperature of described destination object is environment temperature, described method also comprises:
Gather the water temperature of described heat exchanger delivery port;
When the water temperature of described delivery port is greater than Equations of The Second Kind predetermined threshold value, close described heater.
10. method according to claim 8, is characterized in that, when the temperature of described destination object is the water temperature of described heat exchanger delivery port, described method also comprises:
When the water temperature of described delivery port is greater than Equations of The Second Kind predetermined threshold value, close described heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410664766.XA CN104457396A (en) | 2014-11-19 | 2014-11-19 | Heat exchanger anti-freezing method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410664766.XA CN104457396A (en) | 2014-11-19 | 2014-11-19 | Heat exchanger anti-freezing method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104457396A true CN104457396A (en) | 2015-03-25 |
Family
ID=52903842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410664766.XA Pending CN104457396A (en) | 2014-11-19 | 2014-11-19 | Heat exchanger anti-freezing method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104457396A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1704712A (en) * | 2004-06-04 | 2005-12-07 | 河南新飞电器有限公司 | Plate-type heat exchanger antifreeze apparatus and control method thereof |
| CN200968749Y (en) * | 2006-11-14 | 2007-10-31 | 珠海格力电器股份有限公司 | Antifreeze controller of heat exchanger |
| JP2008039370A (en) * | 2006-07-14 | 2008-02-21 | Toshiba Corp | Refrigerator |
| CN101464033A (en) * | 2007-12-19 | 2009-06-24 | 海尔集团公司 | Antifreeze method and system for indoor unit of air conditioner |
| CN201535601U (en) * | 2009-07-29 | 2010-07-28 | 江苏天舒电器有限公司 | Heat exchanger anti-freezing structure device |
| CN102116548A (en) * | 2009-12-31 | 2011-07-06 | 珠海格力电器股份有限公司 | Method for preventing shell-tube heat exchanger from freezing and shell-tube heat exchanger |
| CN202420045U (en) * | 2012-01-16 | 2012-09-05 | 张家港市金腾化工机械制造有限公司 | Antifreezing device of condenser |
| CN203100324U (en) * | 2012-12-01 | 2013-07-31 | 博西华电器（江苏）有限公司 | Refrigeration equipment with defrosting function |
| CN203455104U (en) * | 2013-09-05 | 2014-02-26 | 江苏省精创电气股份有限公司 | Remote wireless temperature monitor |
| CN203772118U (en) * | 2014-04-11 | 2014-08-13 | 沈阳东安电力自动化有限责任公司 | Automatic curtain type anti-icing control system of water cooling tower |
-
2014
- 2014-11-19 CN CN201410664766.XA patent/CN104457396A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1704712A (en) * | 2004-06-04 | 2005-12-07 | 河南新飞电器有限公司 | Plate-type heat exchanger antifreeze apparatus and control method thereof |
| JP2008039370A (en) * | 2006-07-14 | 2008-02-21 | Toshiba Corp | Refrigerator |
| CN200968749Y (en) * | 2006-11-14 | 2007-10-31 | 珠海格力电器股份有限公司 | Antifreeze controller of heat exchanger |
| CN101464033A (en) * | 2007-12-19 | 2009-06-24 | 海尔集团公司 | Antifreeze method and system for indoor unit of air conditioner |
| CN201535601U (en) * | 2009-07-29 | 2010-07-28 | 江苏天舒电器有限公司 | Heat exchanger anti-freezing structure device |
| CN102116548A (en) * | 2009-12-31 | 2011-07-06 | 珠海格力电器股份有限公司 | Method for preventing shell-tube heat exchanger from freezing and shell-tube heat exchanger |
| CN202420045U (en) * | 2012-01-16 | 2012-09-05 | 张家港市金腾化工机械制造有限公司 | Antifreezing device of condenser |
| CN203100324U (en) * | 2012-12-01 | 2013-07-31 | 博西华电器（江苏）有限公司 | Refrigeration equipment with defrosting function |
| CN203455104U (en) * | 2013-09-05 | 2014-02-26 | 江苏省精创电气股份有限公司 | Remote wireless temperature monitor |
| CN203772118U (en) * | 2014-04-11 | 2014-08-13 | 沈阳东安电力自动化有限责任公司 | Automatic curtain type anti-icing control system of water cooling tower |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110056981A (en) | A kind of heat-exchanging component, air-conditioner outdoor unit and its control method | |
| CN204553798U (en) | Gear box lubricating oil temperature control system | |
| CN106765889A (en) | Air-conditioning and its pipeline antifreeze control method and device | |
| CN104390424A (en) | Refrigerator and method for controlling electric damper of refrigerator | |
| CN203869167U (en) | Multiple online air conditioner system | |
| CN105588395B (en) | A kind of wind cooling refrigerator duct heating system and its control method | |
| CN105042987A (en) | Method and device for controlling temperature varying chamber of refrigerator | |
| CN105402969A (en) | Energy-saving deicing dynamic ice-making system and deicing operation method thereof | |
| CN105570988A (en) | Air conditioner and control method thereof | |
| CN205414181U (en) | Air -conditioning copper pipe enlarger | |
| CN109028589A (en) | Water-drainage antifreezing system, electrical equipment and water discharge method | |
| CN104457396A (en) | Heat exchanger anti-freezing method and system | |
| CN103939999B (en) | Double-refrigerant air conditioner system and control method thereof | |
| CN105157296A (en) | Fan control method and system of dual-system air-cooled chiller unit | |
| CN205619430U (en) | Air -conditioner | |
| CN107084579A (en) | A kind of cooling water system constructional device used under low circumstance temperature operating mode | |
| CN105526155A (en) | Temperature control method, device and system for closed hydraulic pump test system | |
| CN111765648A (en) | Anti-freezing control method, processor and air source heat pump system | |
| CN206890973U (en) | The cooling water system constructional device used under low circumstance temperature operating mode | |
| CN205373477U (en) | Heat pipe phase transition working medium fill dress device | |
| CN205225914U (en) | Hydrovalve and electric power operation car air conditioner hydraulic system | |
| CN204451936U (en) | The heating installation of special purpose vehicle operator's compartment | |
| CN205156674U (en) | Closed -system cooling tower system of preventing frostbite | |
| CN208244241U (en) | A kind of attemperator of filter | |
| CN203925606U (en) | One is applicable to steam turbine in thermal power plant Auxiliary Steam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |
|
| RJ01 | Rejection of invention patent application after publication |