CN1357736A - Expander for heat exchange circulation - Google Patents
Expander for heat exchange circulation Download PDFInfo
- Publication number
- CN1357736A CN1357736A CN01145000A CN01145000A CN1357736A CN 1357736 A CN1357736 A CN 1357736A CN 01145000 A CN01145000 A CN 01145000A CN 01145000 A CN01145000 A CN 01145000A CN 1357736 A CN1357736 A CN 1357736A
- Authority
- CN
- China
- Prior art keywords
- short tube
- heat exchange
- shell
- exchange circulation
- expander
- 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.)
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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
- F25B41/30—Expansion means; Dispositions thereof
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The expander for heat exchange circulation discloses a short pipe set in the fluid passage in a tubular casing to make flowing fluid expand. There are two fluid passages, one inside the short pipe and one between the tubular casing and the short pipe. On stopping the heat exchange circulation, the expander reduces the pressure on two sides of the short pipe fast to reach balance and decrease the noise caused by the pressure difference. The expander of the present invention may be also used in indoor machine.
Description
Technical field
The invention belongs to the air-conditioner class, relate in particular to the heat exchange EGR of air-conditioner.
Background technology
The heat exchange circulation is to circulate between certain space, and keeps the temperature in its space.In present refrigeration system circulating technology, (referring to Fig. 1, shown in Figure 2), its heat exchange circulation is by compressor (1), indoor heat converter (5), and capillary (3), outdoor heat converter (2) is formed by connecting.Between capillary (3) and indoor heat converter (5), be provided with valve for preventing reverse-flow (4) and greenhouse capillary (6) in addition, and between indoor heat converter (5) and compressor (1), have valve (8) to connect.
Be that example illustrates at first with freezing thermal cycle.Streaming flow in compressor is become high temperature by compressor (1) effect, high pressure gas is sent to outdoor heat converter (2).And carry out heat exchange in outdoor heat converter (2) lining and outdoor air, the heat of fluid is outwards emitted.In the middle of such process, the fluid in the outdoor heat converter, the liquid that becomes relative low temperature, low-pressure state of lowering the temperature because of heat release enters capillary (3).
In capillary (3), pressurized the making of fluid carried out heat exchange easily in indoor heat converter (5) lining.At this moment, the fluid that comes out from capillary (3) lining can pass through valve for preventing reverse-flow (4), in indoor heat exchanger (5), its fluid can and indoor air carry out heat exchange, and therefrom obtain heat and evaporate.And evaporation in indoor heat converter and become low temperature, the gaseous state of low pressure.Such fluid can come back to compressor (1) the inside by valve (8).
On the other hand, in the greenhouse chamber, the high temperature that comes out from compressor (1) lining, the fluid of high pressure enter indoor heat converter (5) by valve (8).At this moment, carry out heat exchange and heat release at the fluid of the condition of high temperature of indoor heat converter (5) lining and indoor air.The fluid that is condensed because of the cause of heat release in valve for preventing reverse-flow (4) lining by greenhouse capillary (6), and capillary (3) and be depressurized and become the fluid of easy evaporation inlet chamber outer heat-exchanger (2).
Also have, the fluid outdoor heat converter (2) in is because evaporate and air outside is carried out heat exchange and become gas, is fed to compressor (1) again and repeats same process.
On the other hand, shown in Fig. 2 a like that, can also replace capillary (3) to make fluid expansion with short tube (7).This body (7b) is to insert simultaneously from outdoor heat exchanger (2) exit (2 ~) and valve for preventing reverse-flow (4) porch (4 ~).So body links to each other with the outdoor heat exchanger outlet place and the inlet of indoor heat converter, and short tube is located at the inside of shell.There is a passage (7h) in central authorities at body (7b), and this passage makes the porch (4 ~) of the exit of outdoor heat converter (2 ~) and indoor heat converter is coupled together.In this time, it is very little that passage is compared with the internal diameter of exit and porch.The 7s of drawing is a short tube.
Short tube (7) is and capillary (3) reduces pressure the cold high pressure medium that come out from outdoor heat converter (2) lining together, and becomes the state of easy evaporation in indoor heat converter (5), and allows it flow according to a certain percentage.
But technology in the past has such problem to exist, and as being benchmark with short tube (7), be high pressure a side of the outdoor heat converter (2) of short tube (7), and a side of indoor heat converter (5) is a low pressure.Along with such pressure differential can usually cause noise when thermal cycle stops.Such noise be heat exchange circulate in stop in because short tube (7) pressure at both sides is different and uneven caused,
Such noise is particularly especially serious when the heat exchange circulation stops.It is because, in the process of heat exchange circulation, just produced the difference of pressure in the both sides of short tube (7), if this time, circulation stopped suddenly, the pressure difference value of short tube both sides can strengthen suddenly; And fluid can be flowed to the direction of low pressure by the place of high pressure, so during this time just produced noise by the less passage (7h) that compares.
Therefore, in the process of heat exchange, short tube (7) can not be arranged on indoor heat exchanger, and can only be arranged on outdoor heat exchanger.
Summary of the invention
The purpose of this invention is to provide a kind of expander for heat exchange circulation, above said when circulation stops and the noise that causes in order to solve exactly.
Another object of the present invention is when thermal cycle stops, reduces the pressure difference value in the short tube both sides rapidly.
The object of the present invention is achieved like this: the present invention is provided with the inflation channel that fluid flows in the shell that places air-conditioning heat exchange circulation high pressure and low pressure one side, inflation channel be built-in with external diameter than inflation channel little and the center be provided with the short tube of fluid passage, be provided with the short tube of restriction short tube displacement in the shell channel expansion device, the face of being close to mutually of the short tube of shell channel expansion inside and short tube is provided with identical seal.
The present invention also can,
Be provided with the sealing guide surface that guides sealing station at shell and seal corresponding section.
Be set to greater than the short tube external diameter and have the internal diameter size in slit at the internal diameter of shell.
Be provided with two juts of decision short tube displacement in shell inside.
Short tube of the present invention is because there is an above structure, so when the heat exchange circulation stops, can not cause noise because of the difference of the pressure of short tube both sides.Because the pressure of short tube both sides can reduce rapidly because of it moves in shell.
The present invention is owing to having adopted as above technical scheme, so expansion gear of the present invention can reduce to reach balance to the pressure of short tube both sides rapidly when the heat exchange circulation stops.Because short tube of the present invention is to move along with the pressure of fluid.Certainly it moves the area that has also changed fluid flowing passage.Thus, the former noise that causes because of the pressure reduction of short tube both sides that faces also reduces thereupon.Expansion gear of the present invention also can use in indoor set.
Description of drawings
Fig. 1 is the formation schematic diagram according to the heat exchange circulation of conventional art;
Fig. 2 a is the vertical section schematic diagram that constitutes according to a short tube among the expansion gear of conventional art;
Fig. 2 b is the formation signal face of the short tube among figure two a;
Fig. 3 is the formation schematic diagram according to expander for heat exchange circulation of the present invention;
Fig. 4 is the state signal of expansion gear of the present invention when work.
The explanation of major part in the drawing:
1--compressor 2--outdoor heat converter
3--capillary 4--valve for preventing reverse-flow
5--indoor heat converter 6--greenhouse capillary
7--short tube 8--valve
30--shell 32--fluid passage
35--fixed projection 40--short tube
42--inflation channel 44--short tube is close to guide surface
50--short tube 52--short tube is close to guide surface
The 54--short tube is close to face
Embodiment
Schematic diagram according to heat exchange circulation expansion gear of the present invention describes in detail below:
The explanation of Fig. 1, Fig. 2 is described in detail in " background technology ", so in this omission.
In Fig. 3, Fig. 4, the entrance side of the outlet side of capillary (3) and short tube (7) is to be connected in the inside of shell (30), so the inside of shell has just formed the passage (32) that fluid flows.And in the passage fixed projection (35) being arranged really in shell inside, this projection is restriction short tube (a 40) displacement.The another side of projection has short tube (50), has been provided with the projection (37,37 ~) of fixation around short tube.
In the inside of shell (30) short tube (40) is arranged, this short tube plays the effect of expansion fluid.The passage (42) that also has a fluid to flow in the inside of short tube (40).Here it is inflation channel (42).And, though do not show among the figure that inflation channel is a passage that cross section diminishes gradually in short tube.
Be provided with in the back of short tube (40) and be close to guide surface (44), this be close to guide surface (44) be with short tube (50) be close to guide surface mutual induction mutually, they have common inclination angle, such purpose is in order better to play sealing function.
The external diameter of short tube (40) is littler than the internal diameter of shell (30), so slit is together arranged between shell and short tube, also can pass through by this slit fluid.
Short tube (50) is to be low pressure one side of benchmark with short tube (40), just a side of rapid steamer (7).So short tube (50) is the structure of a ring device, and its guide surface (44) of being close to of being close to face (52) and short tube corresponds to each other.Short tube be close to the inside that guide surface (52) is provided in a side of short tube, and the guide surface (44) of being close to of short tube is provided in a side of its rear outside.
The following describes the effect of expansion gear of the present invention.
In heat exchange circulation, fluid can flow in the place toward high pressure in compressor, so freezing machine (3) one sides are relatively high pressures, and when passing through short tube (40), can be inflated to be depressurized after the channel expansion becomes low pressure.
When the heat exchange circulation is carried out, because the difference of short tube (40) pressure at both sides, and make short tube (40) move to short tube (50) direction, as shown in Figure 4.And then short tube be close to face (44) and short tube be close to that face (54) is close to mutually and the effect that obtains sealing.
So, the fluid that enters shell can only pass through the inflation channel (42) of short tube (40).So fluid can be depressurized.
When the heat exchange circulation stopped suddenly, compressor (1) also stopped thereupon, and relatively high pressure originally also descends to some extent, and the pressure differential in short tube (40) both sides also obtains rapid decline.
Reduce because of pressure reduction this time, and short tube (40) can the same high pressure direction to a as shown in Figure 3 move, and so the flow channel of fluid is inflation channel (42), and just (32) in the slit between shell and the short tube.
Thus,, and the pressure reduction of short tube both sides can be reduced timely, thereby the pressure of short tube both sides also obtained balance, so noise has also reduced thereupon because the flow area of fluid increases.
On the other hand, when the heat exchange circulation stops, the high-pressure spray that comes out at compressor (1) is known from experience short tube (40) is pushed away to short tube (50), and the sealing of being close to guide surface (44) and short tube (50) of short tube (40) is close to face (54) and is coincide again together in such event.Thus, sealing device (50) and short tube (40) have obtained again being close to, and have played the effect of fluid-encapsulated passage thus.
Claims (4)
1, a kind of expander for heat exchange circulation, it is characterized in that, place and be provided with the inflation channel that fluid flows in the shell of air-conditioning heat exchange circulation high pressure and low pressure one side, inflation channel be built-in with external diameter than inflation channel little and the center be provided with the short tube of fluid passage, be provided with the short tube of restriction short tube displacement in the shell channel expansion device, the face of being close to mutually of the short tube of shell channel expansion inside and short tube is provided with identical seal.
2, a kind of expander for heat exchange circulation according to claim 1 is characterized in that, shell and seal corresponding section are provided with the sealing guide surface of guiding sealing station.
3, a kind of expander for heat exchange circulation according to claim 1 and 2 is characterized in that, the internal diameter of shell is set to greater than the short tube external diameter and has the internal diameter size in slit.
4, a kind of expander for heat exchange circulation according to claim 3 is characterized in that, shell inside is provided with two juts of decision short tube displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01145000A CN1357736A (en) | 2001-12-26 | 2001-12-26 | Expander for heat exchange circulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01145000A CN1357736A (en) | 2001-12-26 | 2001-12-26 | Expander for heat exchange circulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1357736A true CN1357736A (en) | 2002-07-10 |
Family
ID=4677952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01145000A Pending CN1357736A (en) | 2001-12-26 | 2001-12-26 | Expander for heat exchange circulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1357736A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275795B (en) * | 2008-03-03 | 2010-12-22 | 海信科龙电器股份有限公司 | Composite throttle pipe |
-
2001
- 2001-12-26 CN CN01145000A patent/CN1357736A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275795B (en) * | 2008-03-03 | 2010-12-22 | 海信科龙电器股份有限公司 | Composite throttle pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |