CN106766572B - Compressor is coupled with cryocooler cold head with T-type acoustical match component and refrigeration machine - Google Patents
Compressor is coupled with cryocooler cold head with T-type acoustical match component and refrigeration machine Download PDFInfo
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- CN106766572B CN106766572B CN201611030446.4A CN201611030446A CN106766572B CN 106766572 B CN106766572 B CN 106766572B CN 201611030446 A CN201611030446 A CN 201611030446A CN 106766572 B CN106766572 B CN 106766572B
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 19
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000011800 void material Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000002792 vascular Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 206010051986 Pneumatosis Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 235000002020 sage Nutrition 0.000 description 1
- 239000000126 substance Substances 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
-
- 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Compressor (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a kind of compressors to couple with cryocooler cold head with T-type acoustical match component, three pure acoustic reactance elements including T-shaped connection；According to the difference of the connected acoustic capacitance of parallel branch or phonoreception type in T-type acoustical match component, two kinds of structures can be divided into.The invention also discloses a kind of refrigeration machine comprising T-type acoustical match component, including Linearkompressor and with the sequentially connected T-type acoustical match component of compressor outlet, Cryo Refrigerator cold head.The present invention may be implemented compressor and cryocooler cold head in Cryo Refrigerator while obtaining efficient purpose, while guaranteeing refrigeration machine high reliability, be greatly improved complete machine refrigerating efficiency by introducing the idle T-type acoustical match network being made of pure acoustic reactance.
Description
Technical field
The invention belongs to Cryo Refrigerator technical fields, are specifically related to a kind of for Linearkompressor and Cryo Refrigerator
The T-type acoustical match component and refrigeration machine of cold head coupling.
Background technique
In recent years, the regenerating type low-temperature refrigerator of Linearkompressor driving, especially vascular refrigerator, due to its cold end without
Moving component, it is expected to really as low cost, low vibration, stable and reliable operation long-life Cryo Refrigerator.With vascular system
Cold structure is continuously improved, and cryogenic temperature constantly reduces, and refrigerating capacity and refrigerating efficiency also greatly improve, in superconductive device
Cooling and gas liquefaction with infrared equipment etc. are used widely.
Impedance matching between Linearkompressor and refrigeration machine is most important for improving overall efficiency, at present research mostly
It concentrates on and how to adjust compressor or refrigerating device inner parameter to realize matching between the two, less someone focuses on the two
Between additional mating structure is added to realize.
2002, J.L.Martin proposed sky volume matching method, i.e., connect between compressor and cryocooler cold head (or
It is in parallel) void volume.2010, Giessen, Germany university between compressor outlet and cryocooler cold head under study for action by connecting
Empty pipe is connect to realize the reduction of compressor operating frequency, essence be exactly the empty volume being utilized in pipe solve compressor with
Matching relationship between cryocooler cold head.2013, physical and chemical the had studied high-power pulse tube cryocooler cold head of the Chinese Academy of Sciences with linearly
The matched influence of void volume between compressor, there are optimal void volumes to make compressor efficiency highest for discovery.Zhejiang University then leads to
Cross the influence that Sage model calculates void volume between compressor and vascular refrigerator cold head.
As shown in figure 5, being the structural schematic diagram and its equivalent circuit of the existing refrigeration machine using void volume matching process
Figure；When Fig. 6 is using void volume matching process, influence of the void volume to impedance.It is full using the refrigeration machine of void volume matching process
The following equation of foot:
Wherein ZinFor refrigeration machine direct impedance, X is the equivalent capacitive reactance of empty volume, ZoutFor the impedance of compressor outlet junction.By
Fig. 5 and Fig. 6 and above-mentioned analysis are it is found that void volume matching process can only cannot achieve along specific circuit change impedance from initial
Impedance point cannot achieve the adjustment on face to the adjusting of an any other impedance point, which also limits compressor efficiency into
One step improves.
Summary of the invention
The present invention provides a series of T-type acoustical match components coupled for Linearkompressor with Cryo Refrigerator, lead to
The pure acoustic reactance component (such as pure acoustic capacitance air reservoir, pure phonoreception inertia tube) for introducing idle is crossed, under the premise of not increasing system power dissipation,
It can be by cryocooler cold head entrance acoustic impedance (Rin+jXin) it is adjusted to compressor outlet acoustic impedance (Rout+jXout), realize refrigeration machine
The respective efficient operation of both cold head and compressor, so that whole system be made to obtain peak efficiency.
The present invention also provides a kind of refrigeration machines with above-mentioned T-type acoustical match component.
A kind of compressor is coupled with cryocooler cold head with T-type acoustical match component, and wherein compressor and cryocooler cold head are logical
It crosses trunk roads to be connected, the T-type acoustical match component includes three acoustic reactances, and the trunk roads are equipped with the first acoustic reactance and the rising tone
Anti-, the trunk roads between the first acoustic reactance and the second acoustic reactance are equipped with parallel branch, which is equipped with third acoustic reactance, utilize
Cryocooler cold head entrance acoustic impedance is adjusted to compressor outlet acoustic impedance by the T-type acoustical match component.
T-type acoustical match component of the invention is particularly suitable for the Cryo Refrigerator system driven by Linearkompressor.
Acoustical match component of the invention includes three pure acoustic reactance elements of T-shaped connection, wherein the first phonoreception is series at
Trunk roads, acoustic capacitance (or phonoreception) are parallel to branch, and the second phonoreception is series at trunk roads.In this way, it improves on the whole
The efficiency of system.In the present invention, with cryocooler cold head in being connected in parallel, phonoreception then (is connect with cryocooler cold head in parallel connection acoustic capacitance
In branch) or series connection (being connected to main line) connection.
According to acoustic capacitance used in parallel branch in T-type acoustical match component or the difference of phonoreception, two kinds can be divided into:
Scheme one: first acoustic reactance and the second acoustic reactance are phonoreception, respectively the first phonoreception and the second phonoreception, third sound
Resist for acoustic capacitance；I.e. the program include be series at cryocooler cold head entrance trunk roads phonoreception, be parallel to thereafter the acoustic capacitance of branch, its
It is series at the phonoreception of compressor outlet trunk roads afterwards；
Scheme two: first acoustic reactance, the second acoustic reactance and third acoustic reactance are phonoreception, respectively the first phonoreception, the rising tone
Sense and third phonoreception；One end of the branch is connected with trunk roads, and the other end is connected with a capacitor.It is, the program includes
Be series at the phonoreception of refrigeration machine entrance trunk roads, be parallel to thereafter the sequentially connected phonoreception and acoustic capacitance of branch, be series at compression
The phonoreception of machine outlet trunk roads.Here the acoustic capacitance for being connected to branch is equivalent to ground connection in circuit.
Preferably, acoustical match component need to realize compressor and Cryo Refrigerator cold head while obtain efficient.For pressure
Contracting machine and Cryo Refrigerator cold head, the two are respectively present optimized operation impedance, and wherein compressor outlet acoustic impedance is Zout=Rout+
jXout, cryocooler cold head acoustic impedance is Zin=Rin+jXin。
For scheme one:
If the phonoreception L of the first acoustic reactance1It is known that the acoustic capacitance C of the acoustic capacitance and phonoreception L of the second phonoreception2It is respectively as follows:
In above formula: ω is angular frequency, RinFor cryocooler cold head entrance acoustic impedance real part, XinEnter voice for cryocooler cold head
Imaginary impedance, RoutFor compressor outlet acoustic impedance real part, XoutFor compressor outlet acoustic impedance imaginary part.
Alternatively, the phonoreception L of the second phonoreception2It is known that the phonoreception L of the first phonoreception1It is respectively as follows: with the acoustic capacitance C of the acoustic capacitance
In above formula: ω is angular frequency, RinFor cryocooler cold head entrance acoustic impedance real part, XinEnter voice for cryocooler cold head
Imaginary impedance, RoutFor compressor outlet acoustic impedance real part, XoutFor compressor outlet acoustic impedance imaginary part.
For scheme two:
If the phonoreception L of the first phonoreception1It is known that the phonoreception L of the second phonoreception2With the phonoreception L of third phonoreception3It is respectively as follows:
In above formula: ω is angular frequency, RinFor cryocooler cold head entrance acoustic impedance real part, XinEnter voice for cryocooler cold head
Imaginary impedance, RoutFor compressor outlet acoustic impedance real part, XoutFor compressor outlet acoustic impedance imaginary part.
Alternatively, the phonoreception L of the second phonoreception2It is known that the phonoreception L of the first phonoreception1With the phonoreception L of third phonoreception3It is respectively as follows:
In above formula: ω is angular frequency, RinFor cryocooler cold head entrance acoustic impedance real part, XinEnter voice for cryocooler cold head
Imaginary impedance, RoutFor compressor outlet acoustic impedance real part, XoutFor compressor outlet acoustic impedance imaginary part.
A kind of refrigeration machine, including compressor and the cryocooler cold head being connected by trunk roads with compressor, the compression
Compressor described in any of the above embodiments is equipped between machine and cryocooler cold head to be coupled with cryocooler cold head with T-type acoustical match group
Part.
Compared with prior art, the beneficial effects of the present invention are embodied in:
Cryo Refrigerator may be implemented by introducing the idle T-type acoustical match component being made of pure acoustic reactance in the present invention
Middle compressor and cryocooler cold head obtain efficient purpose simultaneously, while guaranteeing refrigeration machine high reliability, are greatly improved
Complete machine refrigerating efficiency.Compared to existing empty volume matching process, T-type acoustical match component it is wider to the adjustable range of impedance (by
Route adjusting extends to face adjusting), substantially increase the flexibility of cryocooler design.
Detailed description of the invention
Fig. 1 is the Linearkompressor driving Cryo Refrigerator comprising T-type acoustical match component of the invention；
Fig. 1 a is the structural schematic diagram of T-type acoustical match component in refrigeration machine shown in Fig. 1；
Fig. 2 is the structural schematic diagram of second of T-type acoustical match component in the present invention；
Fig. 3 is the equivalent circuit diagram of the first T-type acoustical match component；
Fig. 4 is influence of the T-type acoustical match component to compressor efficiency；
Fig. 5 is the structural schematic diagram and its equivalent circuit diagram of the existing refrigeration machine using void volume matching process；
When Fig. 6 is using void volume matching process, the schematic diagram of influence of the void volume to impedance.
Wherein: 1 is the first phonoreception, 2 be acoustic capacitance, 3 be the second phonoreception, 4 be compressor, 5 be T-type acoustical match component, 6 be
Cryo Refrigerator cold head, 7 are third phonoreception.
Specific embodiment
As shown in Figure 1, a kind of Linearkompressor comprising T-type acoustical match component drives Cryo Refrigerator, comprising linear
Compressor 4 and sequentially connected T-type acoustical match component 5, Cryo Refrigerator cold head 6, T-type acoustics are exported with compressor 4
Scheme one that distribution assembly 5 is made of there are two types of scheme, respectively the first phonoreception 1 of T-shaped connection, acoustic capacitance 2 and the second phonoreception 3 or
The scheme two that person is made of the first phonoreception 1, the second phonoreception 3 and third phonoreception 7 and acoustic capacitance 2.
Such as Fig. 1 a and Fig. 2, is connected between cryocooler cold head 6 and Linearkompressor 4 by trunk roads, additionally include one
The one end on road, the branch is connected with trunk roads, and the other end is connected with capacitor, forms parallel branch with trunk roads.Connect on trunk roads
Phonoreception there are two connecing, the trunk roads part between two phonoreceptions is connected with the branch.According to T-type acoustical match component
The difference of acoustic capacitance used in middle parallel branch or phonoreception can be divided into two kinds:
Scheme one: comprising being series at the first phonoreception 1 of 6 entrance trunk roads of cryocooler cold head, being parallel to the sound of branch thereafter
Hold 2, be series at the second phonoreception 2 that compressor 4 exports trunk roads thereafter；
Scheme two: comprising be series at the first phonoreception 1 of 6 entrance trunk roads of cryocooler cold head, be parallel to branch thereafter according to
The third phonoreception 7 and acoustic capacitance 2 of secondary connection, the second phonoreception 3 for being series at compressor outlet trunk roads.Here it is connected to the sound of branch
Hold 2 ground connection being equivalent in circuit, without actual regulatory function.
Wherein the first phonoreception 1 and the second phonoreception 3 are series between compressor 4 and cryocooler cold head 6 on main line, and acoustic capacitance 2 is simultaneously
It is coupled on 6 inlet branch of cryocooler cold head.
Wherein the first phonoreception 1 and the first phonoreception 3, third phonoreception 7 can be realized that acoustic capacitance 2 can be by hollow body pneumatosis by inertia tube
Library is realized.
Acoustical match network need to realize compressor and Cryo Refrigerator cold head while obtain efficient.For compressor and low temperature
Cryocooler cold head, the two are respectively present optimized operation impedance, and wherein compressor outlet acoustic impedance is Zout=Rout+jXout, refrigeration
Machine cold head entrance acoustic impedance is Zin=Rin+jXin。
For scheme one, the phonoreception L of the first phonoreception 11, the acoustic capacitance C of acoustic capacitance 2 and the phonoreception L of the second phonoreception 32Meet such as ShiShimonoseki
It is formula:
Solution obtains the phonoreception L of the first phonoreception 11With the acoustic capacitance C of acoustic capacitance 2 are as follows:
In above formula: ω is angular frequency (i.e. the angular frequency of the angular frequency and whole system internal oscillator of compressor operation),
RinFor cryocooler cold head entrance acoustic impedance real part, XinFor cryocooler cold head entrance acoustic impedance imaginary part, RoutFor compressor outlet sound
Impedance real part, XoutFor compressor outlet acoustic impedance imaginary part, L2It is given value for the phonoreception of the second phonoreception 3.
Alternatively, the phonoreception L of known first phonoreception 11, the phonoreception L of the acoustic capacitance C of acoustic capacitance 2 and the second phonoreception 32Are as follows:
In above formula: ω is angular frequency, RinFor cryocooler cold head entrance acoustic impedance real part, XinEnter voice for cryocooler cold head
Imaginary impedance, RoutFor compressor outlet acoustic impedance real part, XoutFor compressor outlet acoustic impedance imaginary part.
For scheme two, the phonoreception L of the first phonoreception 11With the phonoreception L of third phonoreception 73Meet following relational expression:
Solution obtains the phonoreception L of the first phonoreception 11With the phonoreception L of third phonoreception 73Are as follows:
Alternatively, the phonoreception L of known first phonoreception 11, the phonoreception L of third phonoreception 73With the phonoreception L of the second phonoreception 32Are as follows:
We are described in detail by taking the first scheme as an example:
To meet compressor and cryocooler cold head obtains high efficiency simultaneously, the second of the acoustic capacitance C of acoustic capacitance 2 and the first phonoreception 1
The phonoreception L of phonoreception 32It needs suitably to choose.Known compressor outlet acoustic impedance is Zout=Rout+jXout, cryocooler cold head entrance
Acoustic impedance is Zin=Rin+jXin.T-type acoustical match network equivalent circuit diagram according to Fig.3, meets following relational expression:
The phonoreception L of the acoustic capacitance C of acoustic capacitance 2 and the second phonoreception 32It chooses according to the following formula:
In above formula: ω is angular frequency, RinFor cryocooler cold head entrance acoustic impedance real part, XinFor refrigeration machine entrance acoustic impedance
Imaginary part, RoutFor compressor outlet acoustic impedance real part, XoutFor compressor outlet acoustic impedance imaginary part, L1For the phonoreception of the first phonoreception,
For given value.
By taking Fig. 4 as an example, Fig. 4 show certain Linearkompressor running frequency 60Hz, resistance when system average pressure 2.0MPa
Anti- efficiency cloud atlas, abscissa are acoustic impedance real part, and ordinate is acoustic impedance imaginary part.Assuming that certain cryocooler cold head entrance acoustic impedance
Fall in A point [Z as shown in the figurein=(2.5 × 108-2.7×108j)Pa·s/m3], and compressor peak efficiency for acoustic resistance
Resist for B point [Zout=(7 × 107-1×108j)Pa·s/m3], cryocooler cold head need to be located at A by T-type acoustical match network at this time
The acoustic impedance of point is adjusted to B point, then compressor and cryocooler cold head can obtain high efficiency simultaneously.The phonoreception L of given first phonoreception1
=1.86 × 105kg/m4, it is substituted into above-mentioned formula with A point B point acoustic impedance, can be obtained:
C=9.1 × 10-12m3/Pa；
L2=9.7 × 105kg/m4。
According to the acoustic capacitance formula of void volume air reservoir:
Wherein V is air reservoir void volume, and γ is working medium adiabatic exponent, p0For system average pressure.Here choosing helium is work
Matter, then γ=1.667, average pressure p0=2.0MPa, then it is about V=30cm that air reservoir volume, which is calculated,3。
According to inertia tube phonoreception formula:
Wherein l is pipe range, and R is Working medium gas constant (helium R=2078.5), and T is environment temperature (taking 300K here), A
For inertia tube sectional area.Assuming that inertia bore is selected as 3mm, then pipe range needed for the first phonoreception 1 can be calculated is about 0.41m,
Pipe range needed for second phonoreception 3 is about 2.13m.
As seen from Figure 4, it is added before T-type acoustical match network, A point compressor efficiency is 59%, and T-type appropriate is added
After acoustical match network, B point compressor efficiency is up to 78% or more.
The embodiment of scheme two is similar with scheme one, all belongs to the scope of protection of the present invention.
Claims (4)
1. a kind of compressor is coupled with cryocooler cold head uses T-type acoustical match component, wherein compressor passes through with cryocooler cold head
Trunk roads are connected, which is characterized in that the T-type acoustical match component includes three acoustic reactances, and the trunk roads are equipped with the first sound
Anti- and the second acoustic reactance, the trunk roads between the first acoustic reactance and the second acoustic reactance are equipped with parallel branch, which is equipped with the
Cryocooler cold head entrance acoustic impedance is adjusted to acoustic resistance needed for compressor outlet using the T-type acoustical match component by three acoustic reactances
It is anti-；
First acoustic reactance, the second acoustic reactance and third acoustic reactance are phonoreception, respectively the first phonoreception, the second phonoreception and third sound
Sense；One end of the branch is connected with trunk roads, and the other end is connected with a capacitor.
2. compressor according to claim 1 is coupled with cryocooler cold head with T-type acoustical match component, which is characterized in that
The phonoreception L of first phonoreception1It is known that the phonoreception L of the second phonoreception2With the phonoreception L of third phonoreception3It is respectively as follows:
In above formula: ω is angular frequency, RinFor cryocooler cold head entrance acoustic impedance real part, XinIt is empty for cryocooler cold head entrance acoustic impedance
Portion, RoutFor compressor outlet acoustic impedance real part, XoutFor compressor outlet acoustic impedance imaginary part.
3. compressor according to claim 1 is coupled with cryocooler cold head with T-type acoustical match component, which is characterized in that
The phonoreception L of second phonoreception2It is known that the phonoreception L of the first phonoreception1With the phonoreception L of third phonoreception3It is respectively as follows:
In above formula: ω is angular frequency, RinFor cryocooler cold head entrance acoustic impedance real part, XinIt is empty for cryocooler cold head entrance acoustic impedance
Portion, RoutFor compressor outlet acoustic impedance real part, XoutFor compressor outlet acoustic impedance imaginary part.
4. a kind of refrigeration machine, including compressor and the cryocooler cold head being connected by trunk roads with compressor, which is characterized in that
The described in any item compressors of claims 1 to 3 are equipped between the compressor and cryocooler cold head to couple with cryocooler cold head
With T-type acoustical match component.
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737430A (en) * | 2016-02-24 | 2016-07-06 | 中国科学院理化技术研究所 | Impedance-adjustable type refrigerating machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737430A (en) * | 2016-02-24 | 2016-07-06 | 中国科学院理化技术研究所 | Impedance-adjustable type refrigerating machine |
Non-Patent Citations (4)
| Title |
|---|
| Design of a RF matching network based on a new tunable inductor concept;Mouna EL Bakkali等;《ELSEVIER Microelectronics Journal》;20100821;第233-238页 |
| Q-based design method for T network impedance matching;B.K.Chung;《ELSEVIER Microelectronics Journal》;20060329;第1007-1011页 |
| Variability analysis of impedance matching network;Boon Kuan Chung;《ELSEVIER Microelectronics Journal》;20060807;第1419-1423页 |
| 机械谐振式热声制冷机研究;柳玉林;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20080315;第7-21页 |
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