CN111594626A - Temperature sensing driving device and flow regulating valve using same - Google Patents
Temperature sensing driving device and flow regulating valve using same Download PDFInfo
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- CN111594626A CN111594626A CN201910125756.1A CN201910125756A CN111594626A CN 111594626 A CN111594626 A CN 111594626A CN 201910125756 A CN201910125756 A CN 201910125756A CN 111594626 A CN111594626 A CN 111594626A
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 9
- 230000035945 sensitivity Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
The invention discloses a temperature sensing driving device and a flow regulating valve using the same, wherein the temperature sensing driving device comprises a driving part, a temperature sensing part and a capillary tube, the driving part comprises a pressure driving cavity, the temperature sensing part comprises a temperature sensing cavity, a temperature sensing medium is arranged in a containing cavity defined by the temperature sensing cavity, the pressure driving cavity and an inner hole of the capillary tube, and the capacity of the temperature sensing cavity is defined as Q1 and Q2, so that the Q1 is more than 0.5Q 2; the temperature sensing part comprises a cylindrical temperature sensing bulb, the first end of the capillary tube extends into the inner cavity of the temperature sensing bulb, and the port of the first end is positioned below the liquid level of the liquid medium.
Description
Technical Field
The invention belongs to the technical field of drive control, and particularly relates to a temperature sensing driving device and a flow regulating valve using the same.
Background
The temperature sensing driving device has a wide application range, such as a flow regulating valve with the temperature sensing driving device, which is used for regulating the flow of fluid in a refrigerating system, and cooling lubricating oil of a condenser and a compressor by cooling water. Specifically, the working condition of the refrigeration system has certain fluctuation, namely the condensing temperature of the condenser and the oil temperature of the lubricating oil have fluctuation, so that the temperature sensing driving device is installed in practical application to adjust the size of the cooling water along with the change of the condensing temperature and the change of the oil temperature of the lubricating oil, and therefore the stable operation of the air conditioning system is ensured.
Fig. 7 is a schematic structural view of a flow rate regulating valve using a temperature sensing driving device in the background art.
Referring to fig. 7, the flow rate control valve includes a temperature sensing driving device and a valve body member 200 ', the temperature sensing driving device mainly includes a driving member 100 ' and a temperature sensing member 300 ', and the driving member 100 ' and the temperature sensing member 300 ' are connected by a capillary tube. The temperature sensing part 300 'is arranged at a position where temperature change needs to be detected, a temperature sensing medium is arranged in a temperature sensing cavity of the temperature sensing part 300', the temperature sensing medium can generate pressure change along with the temperature change, the pressure change of the medium in the inner hole of the capillary tube is utilized to transmit the pressure into a cavity of the driving part 100 ', the medium in the cavity generates pressure change, and then the valve body part 200' is driven to adjust the opening degree of a valve port, so that the purpose of adjusting the fluid flow is achieved.
In this type of temperature sensing driving device, the media in the temperature sensing part 300 'converts a temperature change of an external detection environment into a pressure change of the internal temperature sensing media and transmits the pressure change to the driving part 100'. Therefore, the sensitivity of the temperature/pressure change in the system transmission process is an important performance index of the temperature sensing driving device, and is a subject of research and improvement by those skilled in the art.
Disclosure of Invention
The invention provides a temperature sensing driving device, which comprises a driving part, a temperature sensing driving part and a temperature sensing driving part, wherein the driving part comprises a driving part; the temperature sensing part comprises a temperature sensing cavity, the temperature sensing cavity is communicated with an inner hole of the capillary tube, a pressure driving cavity of the driving part is communicated with the inner hole of the capillary tube, a temperature sensing medium is arranged in a containing cavity defined by the temperature sensing cavity, the pressure driving cavity and the inner hole of the capillary tube, and the capacity of the temperature sensing cavity is defined as Q1, and the capacity of the containing cavity is defined as Q2, so that the requirement that Q1 is more than 0.5Q2 is met; the temperature sensing part comprises a cylindrical temperature sensing bulb, the inner cavity of the temperature sensing bulb is used as the temperature sensing cavity, the temperature sensing medium comprises a liquid medium and a gaseous medium, the liquid medium is arranged at the lower part of the temperature sensing cavity, the first end of the capillary tube extends into the temperature sensing cavity, and the port of the first end is positioned below the liquid level of the liquid medium.
Meanwhile, the invention also provides a flow regulating valve, which comprises a valve body component, wherein the valve body component comprises a valve body, a valve core body, a valve port, a first flow port, a second flow port and the temperature sensing driving device as claimed in any one of claims 1 to 6, the valve core body is fixedly connected or abutted with the driving piece, and the valve core body can be matched with the valve port to regulate the flow of the fluid between the first flow port and the second flow port.
The volume of a temperature sensing cavity of a temperature sensing part is defined as Q1, the volume of an accommodating cavity defined by the temperature sensing cavity, a pressure driving cavity and an inner hole of a capillary tube is defined as Q2, so that the requirement that Q1 is greater than 0.5Q2 is met, a liquid medium is arranged at the lower part of the temperature sensing cavity, a first end of the capillary tube extends into the temperature sensing cavity, and a port of the first end of the capillary tube is positioned below the liquid level of the liquid medium, so that the fluctuation and pressure transmission loss of the medium in the pressure transmission process are reduced, and the sensitivity of the temperature sensing driving device is improved.
Drawings
FIG. 1: the invention provides a structural schematic diagram of a temperature sensing driving device;
FIG. 2: the structure schematic diagram of a flow regulating valve of the temperature sensing driving device in the figure 1 is adopted;
FIG. 3: FIG. 2 is a schematic structural view of a temperature sensing component in the flow control valve;
FIG. 4: FIG. 2 is a schematic structural view of a drive part and a valve body part in the flow control valve;
FIG. 5: the invention provides another structure schematic diagram of a flow regulating valve adopting a temperature sensing driving device;
FIG. 6: FIG. 5 is a schematic structural view of a temperature sensing member in the flow control valve;
FIG. 7: the structure of the flow control valve using the temperature sensing driving device in the background art is schematically shown. Notation and illustration in fig. 1-6:
1-temperature sensing driving device;
10/10A-flow regulating valve;
100-a drive member;
110-a pressure drive chamber;
120-a drive member;
121-first drive member, 122-second drive member;
130-a housing;
131-an upper cover body, 132-a lower cover body;
133-inner chamber of cover;
140-bellows, 141-bellows end;
200-a valve body component;
210-valve body, 220-valve core body and 230-valve port;
240 first flow port, 250-second flow port;
260-a valve cavity;
300-a temperature sensing member;
310-lumen/temperature sensing lumen;
311-upper end face, 312-lower end face;
320-temperature sensing bag;
321-upper end, 322-lower end;
400-capillary tube;
410-an inner hole;
420-first end, 430-second end;
440-port, 450-sheath;
500-temperature sensitive medium;
500 a-liquid temperature sensing medium, 500 b-gaseous temperature sensing medium.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural view of a temperature-sensitive driving device used in the present invention, fig. 2 is a schematic structural view of a flow rate adjusting valve using the temperature-sensitive driving device, fig. 3 is a schematic structural view of a temperature-sensitive part in the flow rate adjusting valve, and fig. 4 is a schematic structural view of a driving part and a valve body part in the flow rate adjusting valve.
As shown in fig. 1, 2, 3 and 4. In this embodiment, the flow rate regulating valve 10 includes a temperature-sensitive driving device 1 and a valve body member 200, wherein the temperature-sensitive driving device 1 includes a driving member 100 and a temperature-sensitive member 300.
The driving part 100 includes a cover 130 and a bellows 140. The cover 130 includes an upper cover 131 and a lower cover 132 fixed by welding, and a bellows member 140 is disposed in an inner cavity 133 of the cover and welded to the lower cover 132. The bellows member 140 forms the pressure driving chamber 110 with the upper and lower casings 131 and 132.
The driving member 100 includes a driving member 120, the driving member 120 includes a first driving member 121 and a second driving member 122, the first driving member 121 is partially disposed in the inner cavity 133 of the cover and abuts against the end 141 of the bellows member 140, and the second driving member 122 is partially disposed outside the inner cavity 133 of the cover. In this embodiment, the first driving member 121 and the second driving member 122 are substantially circular rod-shaped structures, and the first driving member 121 and the second driving member 122 are fixedly connected by internal and external threads. Of course, the first driving element 121 and the second driving element 122 can also transmit pressure by abutting fit and can simultaneously axially displace; the first driving member 121 and the second driving member 122 may be formed as an integral structure.
The valve body member 200 includes a valve body 210, the valve body 210 defines a valve chamber 260, the first flow path port 240 communicates with the valve chamber 260 through the valve port 230, and the second flow path port 250 directly communicates with the valve chamber 260.
The valve body 210 is fixedly connected with the cover 130, and the valve core 220 is disposed in the valve cavity 260 of the valve body member 200. The second driver 122 extends into the valve chamber 260 and is fixedly connected with the valve core 220 by screw threads, but it can also transmit pressure by abutting fit and can simultaneously axially displace.
The temperature sensing member 300 includes a tubular temperature sensing bulb 320, and an inner cavity of the temperature sensing bulb 320 serves as a temperature sensing chamber 310. The first end 420 of the capillary 400 extends into the temperature sensing cavity 310 and is welded and fixed with the temperature sensing bulb 320; the second end 430 of the capillary tube 400 extends into the pressure drive chamber 110 and is fixedly bonded to the upper housing 131. The temperature sensing chamber 310 and the pressure driving chamber 110 are hermetically communicated through an inner hole 410 of the capillary tube 400. The temperature sensing medium 500 is in a multi-phase state, and includes a liquid temperature sensing medium 500a and a gaseous temperature sensing medium 500 b.
In general, in the temperature sensing driving device, in the mounted state, the temperature sensing member is disposed higher than the driving member, the temperature sensing cavity 310 of the temperature sensing member 300 is disposed higher than the pressure driving cavity 110 of the driving member 100, and the temperature sensing cavity 310 and the pressure driving cavity 110 are in sealed communication. Therefore, the temperature sensing medium 500 fills the receiving chamber defined by the temperature sensing chamber 310, the pressure driving chamber 110 and the inner hole 410, the liquid medium 500a is disposed at the lower portion of the temperature sensing chamber 310, and the gaseous medium 500b is disposed at the upper portion of the temperature sensing chamber 310.
In the technical scheme provided by the invention, if the volume of the temperature sensing cavity 310 is set to be Q1, the volumes of the accommodating cavities defined by the inner hole 410, the temperature sensing cavity 310 and the pressure driving cavity 110 which are hermetically communicated with each other are set to be Q2, the Q1 is more than 0.5Q2 (namely, the volume of the temperature sensing cavity 310 is more than 0.5 time of the volume of the accommodating cavity).
The first end 420 of the capillary tube 400 is inserted into the temperature sensing chamber 310 such that the liquid temperature sensing medium 500a covers the port 440 of the first end and the first port 440 is below the liquid level.
As set forth above, the bulb 320 is disposed in the temperature detection region, and effectively detects a temperature change and changes the temperature change into a change in the pressure of the temperature sensing medium in the temperature sensing chamber 310 by the conversion of the gas-liquid two-phase state. The temperature sensing medium in the temperature sensing chamber 310 transmits the pressure change to the medium in the driving chamber 110 through the temperature sensing medium in the inner hole 410.
The medium in the temperature sensing cavity directly senses the temperature change, so the volume ratio of the volume of the temperature sensing cavity 310 to the total volume is large, the larger the volume ratio of the temperature sensing medium directly sensing the temperature change is, the pressure loss of the pressure in the transmission process is reduced, and the detection sensitivity is improved.
The port 440 at the first end is below the liquid level, so that liquid media are kept in the inner hole 410 and the pressure driving cavity 110, the pressure change of the temperature sensing cavity is transmitted to the driving cavity in a hydraulic mode, and the transmission fluctuation is small; moreover, pressure change is easy to generate, so the proportion of the volume of the temperature sensing cavity to the total volume is large,
for the temperature sensing driving device with the structure, the volume of the temperature sensing cavity 310 is 0.5 times larger than that of the accommodating cavity defined by the inner hole 410, the temperature sensing cavity 310 and the pressure driving cavity 110, so that the detection sensitivity can be improved, and the pressure loss ratio can be reduced.
As a further extension of the above embodiment, in the mounted state of the temperature sensing driving device, the bulb 320 is disposed substantially along the longitudinal axis and includes an upper end 321 and a lower end 322 (i.e., the bulb 320 is disposed vertically). The first end 420 of the capillary 400 extends into the temperature sensing chamber 310 from the upper end 321. If the axial distance between the upper end surface 311 and the lower end surface 312 of the inner cavity 310 of the bulb is defined as h1, and the axial distance between the port 440 of the first end 420 of the capillary 400 and the lower end surface 312 is defined as h2 (as shown in fig. 3), h2 is equal to or less than 0.3h 1. The temperature sensing driving device can be further ensured to be in a normal adjusting range, the first end of the capillary 400 is kept below the liquid level of the temperature sensing medium, the liquid transmission of temperature change signals is realized, and the sensitivity of the valve is improved.
As a further extension of the above specific solution, if the diameter of the inner cavity of the thermal bulb 320 is defined as d, the optimal design is: when d is less than or equal to 15mm, h2 is less than or equal to 0.3h 1; when d is more than 15mm and less than or equal to 30mm, h2 is less than or equal to 0.25h 1; when d is more than 30mm and less than or equal to 40mm, h2 and less than or equal to 0.2h1 are satisfied, and within the parameter range, the temperature sensing driving device can be ensured to be in a normal adjusting range, the port 440 of the first end 420 of the capillary tube 400 is kept under the liquid level of the temperature sensing medium, the hydraulic transmission of a temperature change signal is realized, and the sensitivity of the valve is improved.
Fig. 5 is a schematic structural diagram of another flow rate regulating valve using a temperature sensing driving device according to the present invention, and fig. 6 is a schematic structural diagram of a temperature sensing part in the flow rate regulating valve.
As shown in fig. 5 and 6. Unlike the above-described embodiments, in the flow rate control valve 10A of the present embodiment, in the mounted state of the temperature-sensitive driving device, the bulb 320 is disposed substantially in the axial longitudinal direction (i.e., the bulb 320 is disposed vertically), and the first end 420 of the capillary tube 400 extends from the lower end 322 into the temperature-sensitive chamber 310. If the axial distance between the port 440 of the first end 420 of the capillary 400 and the upper end face 311 is defined as h3, h1-h3 ≦ 0.3h1 is satisfied. The temperature sensing driving device can be further ensured to be in a normal adjusting range, the first end of the capillary 400 is kept below the liquid level of the temperature sensing medium, the hydraulic transmission of temperature change signals is realized, and the sensitivity of the valve is improved.
As a further extension of the above specific solution, if the diameter of the inner cavity of the thermal bulb 320 is defined as d, the optimal design is: when d is less than or equal to 15mm, h1-h3 is less than or equal to 0..3h 1; when d is more than 15mm and less than or equal to 30mm, h1-h3 is less than or equal to 0.25h 1; when d is more than 30mm and less than or equal to 40mm, h1-h3 and less than or equal to 0.2h1 are met, the temperature sensing driving device is ensured to be in a normal adjusting range within the parameter range, the port 440 of the first end 420 of the capillary tube 400 is kept below the liquid level of the temperature sensing medium, the hydraulic transmission of a temperature change signal is realized, and the sensitivity of the valve is improved.
The above is only an exemplary preferred embodiment for better illustrating the technical solution of the present invention, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present invention, and all such modifications and decorations should be regarded as the protection scope of the present invention.
Claims (7)
1. A temperature sensing driving device comprises a driving part, a temperature sensing driving part and a temperature sensing driving part, wherein the driving part comprises a driving part; the temperature sensing part comprises a temperature sensing cavity, the temperature sensing cavity is communicated with an inner hole of the capillary tube, a pressure driving cavity of the driving part is communicated with the inner hole of the capillary tube, and a temperature sensing medium is arranged in an accommodating cavity defined by the temperature sensing cavity, the pressure driving cavity and the inner hole of the capillary tube,
the volume of the temperature sensing cavity is defined to be Q1, and the volume of the accommodating cavity is defined to be Q2, so that Q1>0.5Q2 is met; the temperature sensing part comprises a cylindrical temperature sensing bulb, the inner cavity of the temperature sensing bulb is used as the temperature sensing cavity, the temperature sensing medium comprises a liquid medium and a gaseous medium, the liquid medium is arranged at the lower part of the temperature sensing cavity, the first end of the capillary tube extends into the temperature sensing cavity, and the port of the first end is positioned below the liquid level of the liquid medium.
2. A temperature sensitive drive apparatus according to claim 1 wherein said bulb is disposed generally longitudinally along an axis, said first end extends into said temperature sensing chamber from an upper end of said bulb, and an axial distance between an upper end surface and a lower end surface of said temperature sensing chamber defined as h1 and an axial distance between a port of said first end and a lower end surface of said temperature sensing chamber defined as h2 satisfy h2 ≤ 0.3h 1.
3. The temperature sensing driving device according to claim 1, wherein the diameter of the temperature sensing cavity is defined as d, and when d is less than or equal to 15mm, h2 is less than or equal to 0.3h 1; when d is more than 15mm and less than or equal to 30mm, h2 is less than or equal to 0.25h 1; when d is more than 30mm and less than or equal to 40mm, h2 is less than or equal to 0.2h 1.
4. A temperature sensitive drive according to claim 1 wherein said bulb is disposed generally longitudinally along an axis, said first end extends into said temperature sensing chamber from a lower end of said bulb, and an axial distance between an upper end surface and a lower end surface of said temperature sensing chamber defined as h1 and an axial distance between a port of said first end and an upper end surface of said temperature sensing chamber defined as h3 satisfy h1-h3 ≤ 0.3h 1.
5. The temperature sensing driving device according to claim 4, wherein the diameter of the temperature sensing cavity is defined as d, and when d is less than or equal to 15mm, h1-h3 is less than or equal to 0.3h 1; (ii) a When d is more than 15mm and less than or equal to 30mm, h1-h3 is less than or equal to 0.25h 1; when d is more than 30mm and less than or equal to 40mm, h1-h3 is less than or equal to 0.2h 1.
6. The temperature-sensitive drive according to any one of claims 1 to 5, wherein the drive member further comprises a cover and a bellows member, the bellows member being provided in an inner cavity of the cover, the bellows member being welded to the cover to form the pressure drive chamber; the driving piece comprises a first driving piece and a second driving piece, the first driving piece is at least partially arranged in the inner cavity of the cover body, and the first driving piece abuts against the end part of the corrugated pipe piece; the second driving piece is at least partially arranged outside the inner cavity of the cover body, and the first driving piece is abutted or fixedly connected with the second driving piece.
7. A flow regulating valve, comprising a valve body component, wherein the valve body component comprises a valve body, a valve core body, a valve port, a first flow path port and a second flow path port, and further comprising the temperature sensing driving device according to any one of claims 1 to 6, wherein the valve core body is fixedly connected or abutted with the driving member, and the valve core body can cooperate with the valve port to regulate the magnitude of the fluid flow between the first flow path port and the second flow path port.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910125756.1A CN111594626B (en) | 2019-02-20 | 2019-02-20 | Temperature-sensing driving device and flow regulating valve using same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910125756.1A CN111594626B (en) | 2019-02-20 | 2019-02-20 | Temperature-sensing driving device and flow regulating valve using same |
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| CN111594626A true CN111594626A (en) | 2020-08-28 |
| CN111594626B CN111594626B (en) | 2023-05-16 |
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| CN106440575A (en) * | 2016-11-09 | 2017-02-22 | 珠海格力电器股份有限公司 | Gas-liquid separator and air conditioning system |
| CN206488518U (en) * | 2017-01-24 | 2017-09-12 | 浙江三花制冷集团有限公司 | A kind of heating power expansion valve |
| CN108533807A (en) * | 2017-03-02 | 2018-09-14 | 浙江三花制冷集团有限公司 | The assemble method of flow control valve and its power head part, flow control valve |
| CN206874932U (en) * | 2017-04-13 | 2018-01-12 | 厦门鑫风机电设备有限公司 | Hot gas bypass valve |
| CN107575748A (en) * | 2017-09-13 | 2018-01-12 | 山东钢铁股份有限公司 | Steam tracing device |
| CN107575630A (en) * | 2017-10-13 | 2018-01-12 | 平顶山市安泰华矿用安全设备制造有限公司 | A kind of temperature-sensitive bag temperature control device |
| CN107610975A (en) * | 2017-10-30 | 2018-01-19 | 佛山通宝华盛电热控制器有限公司 | A kind of gas expansion type temperature controller |
| CN208041176U (en) * | 2018-04-13 | 2018-11-02 | 浙江博威汽车空调有限公司 | The automobile air-conditioning heating power expansion valve of throttling |
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Effective date of registration: 20220816 Address after: 312500 Daming new area, Zhejiang Xinchang Economic Development Zone, Xinchang County, Shaoxing City, Zhejiang Province Applicant after: Zhejiang Sanhua Commercial Refrigeration Co.,Ltd. Address before: 312500 R & D building of Zhejiang Sanhua refrigeration group, xialiquan village, Qixing street, Xinchang County, Shaoxing City, Zhejiang Province Applicant before: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. |
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