CN107388645B - Dynamic length adjusting device for refrigerating capillary tube - Google Patents
Dynamic length adjusting device for refrigerating capillary tube Download PDFInfo
- Publication number
- CN107388645B CN107388645B CN201710727044.8A CN201710727044A CN107388645B CN 107388645 B CN107388645 B CN 107388645B CN 201710727044 A CN201710727044 A CN 201710727044A CN 107388645 B CN107388645 B CN 107388645B
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- capillary
- capillaries
- length
- electromagnetic valve
- assembly
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- 238000005057 refrigeration Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000000712 assembly Effects 0.000 claims abstract description 5
- 238000000429 assembly Methods 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims description 3
- 229910052755 nonmetal Inorganic materials 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 5
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011981 development test Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention relates to a dynamic length adjusting device for a refrigeration capillary tube, which comprises a plurality of assemblies connected in series, wherein an outlet of the former assembly is connected with an inlet of the latter assembly. The assembly comprises n capillaries with equal lengths, n+1 electromagnetic valves and n+1 electromagnetic valve switches which are connected in series; the inlets of the n+1 electromagnetic valves are respectively connected with the inlets of the n capillaries and the outlet of the last capillary; the outlets of the n+1 electromagnetic valves are connected together to serve as the outlet of the whole assembly; each electromagnetic valve is controlled to be switched on and switched off by a corresponding electromagnetic valve switch; the capillaries, the solenoid valves and the capillaries and the solenoid valves are all connected through thick pipelines. The invention adopts a series combination method similar to that in a circuit, and controls a plurality of capillaries through valves so as to realize various dynamic combinations, and specific capillary length can be obtained without re-welding pipelines.
Description
Technical Field
The invention relates to the technical field of refrigeration and low-temperature engineering, in particular to a refrigeration capillary tube length dynamic adjusting device.
Background
For equipment such as household refrigerators, portable mobile refrigerators, small air conditioners, water chilling units and the like adopting vapor compression refrigeration systems, and low-temperature devices such as throttling refrigerators, pulse tube refrigerators and the like, the capillary tube is an important component of refrigeration circulation, can play a good role in throttling or phase modulation, and has the advantages of simple structure and high reliability.
However, the lengths of capillaries in a refrigeration system are usually found to be the optimal lengths through repeated tests, or the lengths of capillaries with different diameters, which can achieve the same effect, are determined by measuring the air pressure difference and the flow rate of an inlet and an outlet according to capillary tubes with known lengths and diameters, and the methods all require a large number of test tests, sometimes require repeated welding and desoldering, consume large manpower and material resources and time, and do not necessarily find the optimal lengths. And once the capillary tube is welded and installed in a refrigerating system, the length of the capillary tube cannot be changed, and great difficulty is brought to the performance debugging process of the refrigerating system, so that repeated welding and desoldering are required, the efficiency is low, the risk of pipeline blockage is high, and the capillary tube is particularly suitable for a newly developed system.
Disclosure of Invention
The invention aims to provide a refrigerating capillary tube length dynamic adjusting device, which adopts a series combination method in a similar circuit, and realizes various dynamic combinations by controlling a plurality of capillary tubes through valves, so that a specific capillary tube length can be obtained without re-welding pipelines.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a dynamic length regulator for refrigerating capillary tube is composed of several serially connected modules, and the outlet of the former module is connected to the inlet of the latter module.
The assembly comprises n capillaries with equal lengths, n+1 electromagnetic valves and n+1 electromagnetic valve switches which are connected in series; the inlets of the n+1 electromagnetic valves are respectively connected with the inlets of the n capillaries and the outlet of the last capillary; the outlets of the n+1 electromagnetic valves are connected together to serve as the outlet of the whole assembly; each electromagnetic valve is controlled to be switched on and switched off by a corresponding electromagnetic valve switch; the electromagnetic valve is connected with the capillary tube and the electromagnetic valve through thick pipelines.
Further, the capillary tube adopts a metal tube or a nonmetal tube with the inner diameter of 0.4 mm-4 mm; the lengths and the inner diameters of the capillaries in the single assembly are the same, and the lengths of the capillaries in different assemblies are not equal.
Furthermore, the electromagnetic valve adopts a normally closed two-position two-way electromagnetic valve.
Further, in each assembly, only one solenoid valve is open at the same time, and the remaining n solenoid valves are closed.
According to the technical scheme, the method of combining the pipelines in series is adopted, the on-off of a plurality of capillaries is controlled through the electromagnetic valve, so that the dynamic combination of various lengths is realized, and the specific capillary length can be obtained without re-welding the pipelines. The invention has the switch control panel, can conveniently adjust the length of the capillary tube of the refrigeration low-temperature system in operation in real time, realizes more length combinations by less switch quantity, greatly reduces the time required by determining the length of the capillary tube and improves the efficiency of test work. The invention plays a role in throttling or phase modulation in a refrigeration low-temperature system.
Drawings
FIG. 1 is a schematic diagram of the connection structure of the individual components; FIG. 1 is a single module, and the overall application may have multiple modules in series as shown in FIG. 2. In FIG. 1, P1-Pn are capillaries with the same length, V0-Vn are solenoid valves for controlling the on-off of corresponding pipelines, other pipelines except the capillaries are pipelines with larger inner diameters and are larger than or equal to 6 times of the inner diameters of the capillaries, and K0-Kn are switches corresponding to the solenoid valves. The single module has an inlet and an outlet.
FIG. 2 is a schematic diagram of a plurality of modules in series, with the inlets of the latter group being connected to the outlets of the former group to form a unitary product. The capillary lengths of each set are not equal, and the length of the capillaries of the latter set is larger than that of the former set in general application.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1, n equal length capillaries are connected in series and then connected with n+1 solenoid valves in the manner shown in fig. 1 to form a single assembly. The overall application as shown in fig. 2 may have multiple components in series, enabling more length combinations.
The capillary tube is a metal tube with the inner diameter ranging from 0.4mm to 2mm, and plays a role in throttling. The length and the inner diameter of each section of capillary tube in each assembly are the same, and the lengths of the capillary tubes in different assemblies are different. The thick pipeline is a pipeline with larger inner diameter, has small flow resistance and no throttling effect, and only plays a role in pipeline connection. The electromagnetic valves are normally closed, the electromagnetic valves are in one-to-one correspondence, and the closing and the conduction of the electromagnetic valves are controlled through electromagnetic valve switches.
In the single component, the number of the capillaries is n, the number of the electromagnetic valve and the electromagnetic valve switch is n+1, and the capillaries are connected in series. The inlet of the 1 st solenoid valve is connected with the inlet of the 1 st capillary tube. The 2-n solenoid valves are connected to the inlets of the 2-n capillaries, respectively (since the outlet of the previous capillary is connected to the inlet of the next capillary, the solenoid valve is connected to the inlet of the previous capillary, which is equivalent to the outlet of the next capillary). The inlet of the (n+1) th electromagnetic valve is connected with the outlet of the (n) th capillary tube.
The outlets of all n+1 solenoid valves are connected, and as the outlet of the assembly, each solenoid valve is controlled by a corresponding solenoid valve switch. When the multiple components are used in series, the outlet of the former component is connected with the inlet of the latter component to form an integral product.
The specific operation and application method of the invention is as follows:
the opening and closing of the electromagnetic valves are controlled by opening and closing different switches, and only one electromagnetic valve is opened at the same time in each assembly, so that various combinations are realized. Let the number of capillaries of the first group be n 1 Length L of single capillary 1 The second group of capillaries has n 2 Length L of single capillary 2 The number of the m group of capillaries is n m Length L of single capillary m The available capillary length combination is of the type (n) 1 +1)×(n 2 +1)×…×(n m +1). Set the first group k 1 (k 1 ∈{0，1，2，…，n 1 }) switch is opened, the second group kth 2 (k 2 ∈{0，1，2，…，n 2 }) switch is opened, m th group k in turn m (k m ∈{0，1，2，…，n m }) switch is opened, the total length of the combined capillary isTaking a simple application of m=2 as an example, if n1=4, n2=2, l1=0.2 and l2=1m, 15 length combinations with lengths ranging from 0m to 2.8m can be obtained, and the minimum length interval is 0.2m, which has enough adjustment precision for a general simple refrigeration system.
In summary, the invention can be widely applied to development tests of small vapor compression refrigeration systems, throttling refrigerators and pulse tube refrigerators, can conveniently carry out real-time capillary length adjustment on a refrigeration low-temperature system in operation, does not need to weld pipelines again and stop the refrigeration system, realizes more length combinations with less switch number, greatly reduces the time required by determining the capillary length, and improves the efficiency of system development work.
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (4)
1. A refrigerating capillary length dynamic adjusting device is characterized in that: the device comprises a plurality of assemblies connected in series, wherein the outlet of the former assembly is connected with the inlet of the latter assembly;
the assembly comprises n capillaries with equal lengths, n+1 electromagnetic valves and n+1 electromagnetic valve switches which are connected in series; the inlets of the n+1 electromagnetic valves are respectively connected with the inlets of the n capillaries and the outlet of the last capillary; the outlets of the n+1 electromagnetic valves are connected together to serve as the outlet of the whole assembly; each electromagnetic valve is controlled to be switched on and switched off by a corresponding electromagnetic valve switch; the electromagnetic valves are connected with the capillary tube and the electromagnetic valve through thick pipelines; the method comprises the steps of carrying out a first treatment on the surface of the The lengths and the inner diameters of the capillaries in the single assembly are the same, and the lengths of the capillaries in different assemblies are unequal;
in each assembly, only one electromagnetic valve is opened at the same time, and the other n electromagnetic valves are closed;
the first group of capillaries has a number n 1 A single capillary length L 1 The second group of capillaries has n 2 Length L of single capillary 2 The number of the m group of capillaries is n m Length L of single capillary m The obtained capillary length combination is of the type (n) 1 +1)×(n 2 +1)×…×(n m +1)；
First group kth 1 (k 1 ∈{0，1，2，…，n 1 }) switch is opened, the second group kth 2 (k 2 ∈{0，1，2，…，n 2 }) switch is opened, m th group k in turn m (k m ∈{0，1，2，…，n m }) switch is opened, the total length of the combined capillary is
Wherein, the value of n is larger than 1, and the value of m is larger than 2.
2. A refrigeration capillary length dynamic adjustment device according to claim 1, wherein: the capillary tube is a metal tube or a nonmetal tube with the inner diameter of 0.4 mm-4 mm.
3. A refrigeration capillary length dynamic adjustment device according to claim 1, wherein: the electromagnetic valve adopts a normally closed two-position two-way electromagnetic valve or a manual valve.
4. A refrigeration capillary length dynamic adjustment device according to claim 1, wherein: when m=2, n1=4, n2=2, l1=0.2 and l2=1m, 15 combinations of capillary lengths ranging from 0m to 2.8m are obtained, with a minimum length spacing of 0.2m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710727044.8A CN107388645B (en) | 2017-08-22 | 2017-08-22 | Dynamic length adjusting device for refrigerating capillary tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710727044.8A CN107388645B (en) | 2017-08-22 | 2017-08-22 | Dynamic length adjusting device for refrigerating capillary tube |
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| Publication Number | Publication Date |
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| CN107388645A CN107388645A (en) | 2017-11-24 |
| CN107388645B true CN107388645B (en) | 2023-11-07 |
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| CN201710727044.8A Active CN107388645B (en) | 2017-08-22 | 2017-08-22 | Dynamic length adjusting device for refrigerating capillary tube |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269160A (en) * | 2018-08-21 | 2019-01-25 | 青岛海尔股份有限公司 | Single system refrigeration system and refrigeration equipment |
| CN110160289A (en) * | 2019-04-26 | 2019-08-23 | 青岛海尔空调器有限总公司 | A kind of method of determining target capillary |
| CN110160288A (en) * | 2019-04-26 | 2019-08-23 | 青岛海尔空调器有限总公司 | A kind of tooling of determining target capillary |
| IT202100026123A1 (en) * | 2021-10-12 | 2022-01-12 | Antonio Garbuglio | MODULABLE EXPANSION DEVICE AND RELATED ADJUSTMENT METHOD |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0119579A2 (en) * | 1983-03-14 | 1984-09-26 | INDUSTRIE ZANUSSI S.p.A. | Refrigerant circuit for a refrigerator-freezer combination |
| JPH09222270A (en) * | 1996-02-15 | 1997-08-26 | Sanyo Electric Co Ltd | Freezer device |
| CN1445499A (en) * | 2003-03-10 | 2003-10-01 | 广东科龙电器股份有限公司 | Air conditioner |
| CN201377944Y (en) * | 2009-04-03 | 2010-01-06 | 海信（山东）空调有限公司 | Capillary flow regulating device |
| CN202813922U (en) * | 2012-10-08 | 2013-03-20 | 苟仲武 | Electromagnetic type combined throttling gear and refrigeration system thereof |
| CN103836850A (en) * | 2012-11-20 | 2014-06-04 | 珠海格力电器股份有限公司 | Capillary tube matching tool |
| CN106288549A (en) * | 2016-09-18 | 2017-01-04 | 华南理工大学 | A kind of reducer adapting to cryogenic quick freezing and method and application |
| CN207197008U (en) * | 2017-08-22 | 2018-04-06 | 中国电子科技集团公司第十六研究所 | A kind of refrigerating capillary length dynamic regulation device |
-
2017
- 2017-08-22 CN CN201710727044.8A patent/CN107388645B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0119579A2 (en) * | 1983-03-14 | 1984-09-26 | INDUSTRIE ZANUSSI S.p.A. | Refrigerant circuit for a refrigerator-freezer combination |
| JPH09222270A (en) * | 1996-02-15 | 1997-08-26 | Sanyo Electric Co Ltd | Freezer device |
| CN1445499A (en) * | 2003-03-10 | 2003-10-01 | 广东科龙电器股份有限公司 | Air conditioner |
| CN201377944Y (en) * | 2009-04-03 | 2010-01-06 | 海信（山东）空调有限公司 | Capillary flow regulating device |
| CN202813922U (en) * | 2012-10-08 | 2013-03-20 | 苟仲武 | Electromagnetic type combined throttling gear and refrigeration system thereof |
| CN103836850A (en) * | 2012-11-20 | 2014-06-04 | 珠海格力电器股份有限公司 | Capillary tube matching tool |
| CN106288549A (en) * | 2016-09-18 | 2017-01-04 | 华南理工大学 | A kind of reducer adapting to cryogenic quick freezing and method and application |
| CN207197008U (en) * | 2017-08-22 | 2018-04-06 | 中国电子科技集团公司第十六研究所 | A kind of refrigerating capillary length dynamic regulation device |
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| CN107388645A (en) | 2017-11-24 |
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Address after: 230088 658 Wangjiang West Road, Hefei high tech Zone, Anhui Applicant after: CHINA ELECTRONICS TECHNOLOGY Group CORPORATION NO 16 INSTITUTE Address before: No. 439, Suixi Road, Luyang District, Hefei City, Anhui Province, 230043 Applicant before: CHINA ELECTRONICS TECHNOLOGY Group CORPORATION NO 16 INSTITUTE |
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