CN104567094A - Heat recovery system and heat recovery unit provided with same - Google Patents
Heat recovery system and heat recovery unit provided with same Download PDFInfo
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- CN104567094A CN104567094A CN201310469981.XA CN201310469981A CN104567094A CN 104567094 A CN104567094 A CN 104567094A CN 201310469981 A CN201310469981 A CN 201310469981A CN 104567094 A CN104567094 A CN 104567094A
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- cross valve
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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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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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
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Multiple-Way Valves (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a heat recovery system and a heat recovery unit provided with the same. A capillary tube s of a first four-way valve is communicated with a suction pipeline between a first electromagnetic valve and a compressor; a capillary tube s of a second four-way valve is communicated with a suction pipeline between a second electromagnetic valve and the compressor; during the mode conversion of the heat recovery system, even if the first electromagnetic valve or the second electromagnetic valve is closed, the capillary tube s of the first electromagnetic valve or the capillary tube s of the second electromagnetic valve is always communicated with the low-pressure side of the heat recovery system, so that stable high-low pressure difference in the first four-way valve or the second four-way valve is ensured, a leakage of the first four-way valve or the second four-way valve is avoided, and the reliability and the stability of the heat recovery system are improved.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of heat recovery system.
Background technology
Common pump type heat unit, under powering-off state, on the pilot slide valve of cross valve, the capillary connecting D pipe is exhaust outlet, the condenser conducting of d and compressor, is in high-pressure side all the time; The capillary s connecting S pipe is and the air entry of compressor, finned heat exchanger conducting be in low-pressure side all the time.Such cross valve internal piston both sides form stable height pressure reduction, thus the circulation realizing refrigeration and heat.
For recovery type heat unit, generally there are five kinds of patterns :+the hot water that freezes, heats, freezes, water heating, heat+water heating.For completing freely changing of five kinds of patterns smoothly, general needs is realized by the commutation of two cross valves.During patten transformation, idle heat exchanger inevitably accumulates refrigerant.Meanwhile, antifreeze for the heat exchanger that ensures to leave unused, avoids idle heat exchanger directly and low-pressure side conducting, often between the import department and the S pipe of cross valve of gas-liquid separator, increases magnetic valve.Therefore in the situation of closed electromagnetic valve, idle heat exchanger is along with outer work condition rising (such as environment temperature or water temperature raise), the gaseous coolant evaporation capacity of idle heat exchanger is caused to increase, pressure raises gradually, make cross valve internal piston both sides cannot form stable height pressure reduction, piston and main slide valve may occur that skew causes cross valve internal leakage, and main refrigerant circuit leaks to idle heat exchanger, cause the high pressure of system too high.
Such as: as shown in Figure 1, in cooling mode, two cross valves are in off-position to the fundamental diagram of recovery type heat unit, D, C pipe conducting of two cross valves, the conducting of S, E pipe, and the first magnetic valve 81 is opened, and the second magnetic valve 82 cuts out.First cross valve 71 E pipe, S pipe respectively with air-condition heat exchanger 40 conducting, because the second magnetic valve 82 cuts out, hot water heat exchanger 30 is idle heat exchanger in cooling mode, hot water heat exchanger 30 idle after switching is higher by ectocine water temperature, causes the refrigerant pressure accumulated in hot water heat exchanger 30 to raise.Because the capillary s on common cross valve pilot slide valve is welded on S pipe, therefore make that the E of the second cross valve 72 manages, S pipe respectively with hot water heat exchanger conducting, all there is higher pressure, make cannot ensure to form stable height pressure reduction in the second cross valve 72.After continuing for some time, the piston of the second cross valve 72 inside is passed by counter-force, the conducting of D, E pipe, the conducting of S, C pipe, i.e. cross valve internal leakage, make gases at high pressure in system discharged to idle hot water heat exchanger 30, thus cause the refrigerant circulation quantity not sufficient of main loop, the reliability and stability of complete machine cannot be ensured.
Therefore, solve recovery type heat system during patten transformation, make in cross valve, to form stable height pressure reduction owing to accumulating refrigerant in idle case tube heat exchanger, cause that cross valve is inner easily to be revealed, thus the problem causing the reliability of heat recovery system and stability the to reduce technical problem that to be those skilled in the art urgently to be resolved hurrily.
Summary of the invention
Based on this, be necessary the irrationality existed for prior art, a kind of heat recovery system is provided, by the capillary s on the pilot slide valve of cross valve is connected with the suction line between low-pressure side magnetic valve and compressor, capillary s is communicated with low-pressure side all the time, ensure, in cross valve, there is stable height pressure reduction, improve reliability and the stability of heat recovery system.
The technical scheme of a kind of heat recovery system provided by the invention is as follows:
A kind of heat recovery system, comprising: compressor 10; First cross valve 71 and the second cross valve 72, the D pipe of the first cross valve 71 is connected with the exhaust end of compressor 10, the D pipe of the second cross valve 72 is connected with the C pipe of the first cross valve 71, and the S pipe of the first cross valve 71 is all connected with the suction end of compressor 10 with the S pipe of the second cross valve 72; Finned heat exchanger 20, the second end of finned heat exchanger 20 is connected with the C pipe of the second cross valve 72; Air-condition heat exchanger 40, the first end of air-condition heat exchanger 40 is connected with the E pipe of the first cross valve 71, and the second end of air-condition heat exchanger 40 is connected with the first end of finned heat exchanger 20; Hot water heat exchanger 30, the first end of hot water heat exchanger 30 is connected with the E pipe of the second cross valve 72, and the second end of hot water heat exchanger 30 is connected with the first end of finned heat exchanger 20; One end of first magnetic valve 81, first magnetic valve 81 is connected with the S pipe of the first cross valve 71, and the other end is connected with the suction end of compressor 10; One end of second magnetic valve 82, second magnetic valve 82 is connected with the S pipe of the second cross valve 72, and the other end is connected with the suction end of compressor 10; Especially, the pilot slide valve of the first cross valve 71 and the pilot slide valve of the second cross valve 72 include capillary s, and the capillary s of the first cross valve 71 is connected with the suction line between the first magnetic valve 81 and compressor 10; The capillary s of the second cross valve 72 is connected with the suction line between the second magnetic valve 82 and compressor 10.
Preferably, the capillary d on the pilot slide valve of the second cross valve 72 is connected with the D pipe of the first cross valve 71.
Preferably, also comprise gas-liquid separator 60, the outlet of gas-liquid separator 60 is connected with the suction end of compressor 10, and the import of gas-liquid separator 60 is all connected with the other end of the first magnetic valve 81 and the other end of the second magnetic valve 82.
Preferably, the capillary s of the first cross valve 71 is all connected with the import of gas-liquid separator with the capillary s of the second cross valve 72.
Preferably, also comprise reservoir 50, the second end of air-condition heat exchanger 40 is all connected with reservoir 50 with the first end of the second end of hot water heat exchanger 30 and finned heat exchanger 20.
Preferably, the first check valve 91 and the first electric expansion valve 101 has been arranged in parallel between reservoir 50 and air-condition heat exchanger 40.
Preferably, the 3rd check valve 93 and the second electric expansion valve 102 has been arranged in parallel between reservoir 50 and finned heat exchanger 20.
Preferably, between reservoir 50 and hot water heat exchanger 30, be arranged in parallel the second check valve 92 and defrost capillary 110, defrost capillary 110 branch road has also been provided with magnetic valve 83.
Preferably, the second check valve 92 and defrost electric expansion valve has been arranged in parallel between reservoir 50 and hot water heat exchanger 30
The technical scheme of another kind of recuperation of heat unit provided by the invention is as follows:
A kind of recuperation of heat unit, especially, comprises heat recovery system as above.
Preferably, the capillary s of the first cross valve 71 is fixed in the suction line between the first magnetic valve 81 and compressor 10 by fixture, and/or the capillary s of the second cross valve 72 is fixed in the suction line between the second magnetic valve 82 and compressor 10 by fixture.
Preferably, fixture is geometrical clamp.
The invention has the beneficial effects as follows:
Apply technical scheme of the present invention, by being connected with the suction line between the first magnetic valve and described compressor by the capillary s of the first cross valve; The capillary s of the second cross valve is connected with the suction line between the second magnetic valve and described compressor, during the patten transformation of heat recovery system, even if the first magnetic valve or the second closed electromagnetic valve, the capillary s of the first cross valve or the second cross valve is connected with the low-pressure side of heat recovery system all the time, ensure that the inside of the first cross valve or the second cross valve has stable height pressure reduction, avoid the leakage of the first cross valve or the second cross valve, improve reliability and the stability of heat recovery system.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is heat recovery system schematic diagram of the prior art;
Fig. 2 is cross valve off-position schematic diagram of the prior art;
Fig. 3 is cross valve "on" position schematic diagram of the prior art;
Fig. 4 is the cross valve "on" position schematic diagram in the present embodiment;
Fig. 5 is the heat recovery system schematic diagram in the present embodiment.
In above accompanying drawing, there is following Reference numeral:
1, pilot slide valve; 2, solenoid; 3, main valve; 4, piston; 5, main slide valve; 6, left piston chamber; 7, right plunger shaft; 10, compressor; 20, finned heat exchanger; 30, hot water heat exchanger; 40, air-condition heat exchanger; 50, reservoir; 60, gas-liquid separator; 71, the first cross valve; 72, the second cross valve; 81, the first magnetic valve; 82, the second magnetic valve; 83, the 3rd magnetic valve; 91, the first check valve; 92, the second check valve; 93, the 3rd check valve; 101, the first electric expansion valve; 102, the second electric expansion valve; 110, defrost capillary.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
The operation principle of common cross valve is as follows:
See Fig. 2, Fig. 3, cross valve must could normally work under a certain pressure, and cross valve is made up of three parts: pilot slide valve 1, main valve 3 and solenoid 2, and solenoid 2 can be dismantled, and pilot slide valve 1 is integrally welded with main valve 3.Pilot slide valve 1 includes capillary d, capillary e, capillary s, capillary c, main valve 3 is provided with left piston chamber 6, right plunger shaft 7, and D pipe, E pipe, S pipe, C pipe, capillary d is connected with D pipe, capillary e is connected with left piston chamber 6, and capillary c is connected with right plunger shaft 7, and capillary s is connected with S pipe, within air-conditioning systems, D pipe is connected with the exhaust end of compressor.
When solenoid 2 is in off-position, as Fig. 2, pilot slide valve 1 moves to left under right side Compress Spring drives, and gases at high pressure enter right plunger shaft 7 after entering capillary d, on the other hand, the gas in left piston chamber 6 is discharged, because piston two ends exist pressure reduction, the main slide valve 5 in piston 4 and main valve 3 moves to left, and S is managed take over (E manages) with condenser to communicate, another two adapters communicate, and form kind of refrigeration cycle.
When solenoid 2 is in "on" position, as Fig. 3, overcome the tension force of Compress Spring under the magneticaction that pilot slide valve 1 produces at solenoid and move to right, gases at high pressure enter left piston chamber 6 after entering capillary d, on the other hand, the gas of right plunger shaft 7 is discharged, because piston two ends exist pressure reduction, piston 4 and main slide valve 5 move to right, and make S pipe take over (C manages) with finned heat exchanger and communicate, another two adapters communicate, and are formed and heat circulation.
The present embodiment discloses a kind of heat recovery system, make cross valve in heat recovery system, have stable height pressure reduction by the internal structure optimizing cross valve, avoid internal leakage, improve stability and the reliability of heat recovery system, see Fig. 4 and Fig. 5, specifically comprise:
Compressor 10; First cross valve 71 and the second cross valve 72, the D pipe of the first cross valve 71 is connected with the exhaust end of compressor 10, the D pipe of the second cross valve 72 is connected with the C pipe of the first cross valve 71, and the S pipe of the first cross valve 71 is all connected with the suction end of compressor 10 with the S pipe of the second cross valve 72; Finned heat exchanger 20, the second end of finned heat exchanger 20 is connected with the C pipe of the second cross valve 72; Air-condition heat exchanger 40, the first end of air-condition heat exchanger 40 is connected with the E pipe of the first cross valve 71, and the second end of air-condition heat exchanger 40 is connected with the first end of finned heat exchanger 20; Hot water heat exchanger 30, the first end of hot water heat exchanger 30 is connected with the E pipe of the second cross valve 72, and the second end of hot water heat exchanger 30 is connected with the first end of finned heat exchanger 20; One end of first magnetic valve 81, first magnetic valve 81 is connected with the S pipe of the first cross valve 71, and the other end is connected with the suction end of compressor 10; One end of second magnetic valve 82, second magnetic valve 82 is connected with the S pipe of the second cross valve 72, and the other end is connected with the suction end of compressor 10; The pilot slide valve of the first cross valve 71 and the pilot slide valve of the second cross valve 72 include capillary s, and the capillary s of the first cross valve 71 is connected with the suction line between the first magnetic valve 81 and compressor 10; The capillary s of the second cross valve 72 is connected with the suction line between the second magnetic valve 82 and compressor 10.
In heat recovery system, arrange that the first cross valve 71 and the second cross valve 72 make it freezing, heat ,+the hot water that freezes, water heating, heat+water heating five kinds of patterns between can mutually switch, belong to prior art, do not repeat them here.
By increasing by the first magnetic valve 81 between the first cross valve 71 and compressor 10 in the present embodiment, between the second cross valve 72 and compressor 10, increase by the second magnetic valve 82 simultaneously, idle heat exchanger when being ensured water heating by the break-make of the first magnetic valve 81 and the second magnetic valve 82 or heated is in medium voltage side, cut off the connection with suction side, solve the antifreeze problem of idle heat exchanger, belong to prior art, do not repeat them here.
By the capillary s of the first cross valve 71 is connected with the suction line between the first magnetic valve 81 and compressor 10, the capillary s of the second cross valve is connected with the suction line between the second magnetic valve and described compressor, during the patten transformation of heat recovery system, even if the first magnetic valve or the second closed electromagnetic valve, the capillary s of the first cross valve or the second cross valve is connected with the low-pressure side of heat recovery system all the time, ensure that the inside of the first cross valve or the second cross valve has stable height pressure reduction, avoid the leakage of the first cross valve or the second cross valve, major loop in heat recovery system is made to there will not be the situation of coolant quantity deficiency, improve reliability and the stability of heat recovery system.
Wherein, air-condition heat exchanger 40 and hot water heat exchanger 30 are shell and tube exchanger.
Preferably, capillary d on the pilot slide valve of the second cross valve 72 is connected with the D pipe of the first cross valve 71, due in a heating mode, first cross valve 71 is in power-up state, its D, E pipe communicates, S, C pipe communicates, second cross valve 72 is in off-position simultaneously, its D, C pipe communicates, E, S pipe communicates, now, the D pipe of the first cross valve 71 is connected with the exhaust side (high-pressure side) of compressor, the D pipe of the second cross valve 72 is connected with the suction side (low-pressure side) of compressor, and for cross valve, capillary d on its pilot valve needs the normal work being communicated with guarantee cross valve with high-pressure side, therefore, capillary d on the pilot slide valve of the second cross valve 72 is connected with the D pipe of the first cross valve 71 and can ensures that the capillary d of the second cross valve 72 is connected with the exhaust side of compressor all the time, make the second cross valve 72 reliability service under stable height pressure reduction.
See Fig. 5, heat recovery system also comprises gas-liquid separator 60, and the outlet of gas-liquid separator 60 is connected with the suction end of compressor 10, and the import of gas-liquid separator 60 is all connected with the other end of the first magnetic valve 81 and the other end of the second magnetic valve 82.Ensure that the cold-producing medium entered in compressor is gaseous state, avoid compressor generation liquid hit phenomenon.
Preferably, the capillary s of the first cross valve 71 can also be connected with the import of gas-liquid separator with the capillary s of the second cross valve 72.
See Fig. 5, heat recovery system also comprises reservoir 50, the second end of air-condition heat exchanger 40 and the second end of hot water heat exchanger 30 and, the first end of finned heat exchanger 20 is all connected with reservoir 50, and wherein, reservoir 50 is three pipe reservoirs.
See Fig. 5, between reservoir 50 and air-condition heat exchanger 40, be arranged in parallel the first check valve 91 and the first electric expansion valve 101, between reservoir 50 and finned heat exchanger 20, be arranged in parallel the 3rd check valve 93 and the second electric expansion valve 102.Wherein, the first electric expansion valve 101 and the second electric expansion valve 102 have the effect of throttling.First check valve 91 and the 3rd check valve 93 can avoid the liquid refrigerant in fluid reservoir 50 respectively reverse flow return air-condition heat exchanger 40 and finned heat exchanger 20, affect heat transfer effect.
See Fig. 5, between reservoir 50 and hot water heat exchanger 30, be arranged in parallel the second check valve 92 and defrost capillary 110, defrost capillary 110 branch road has also been provided with magnetic valve 83.Wherein, the second check valve 92 can avoid the liquid refrigerant reverse flow backheat water-to-water heat exchanger 30 in fluid reservoir 50, affects heat transfer effect, and separately, the magnetic valve 83 on defrost capillary branch road is opened under defrost pattern, makes system carry out defrost.
Separately, the second check valve 92 and defrost electric expansion valve can also be arranged in parallel between reservoir 50 and hot water heat exchanger 30.The same, the second check valve 92 can avoid the liquid refrigerant reverse flow backheat water-to-water heat exchanger 30 in fluid reservoir 50, and affect heat transfer effect, separately, defrost electric expansion valve is opened under defrost pattern, makes system carry out defrost.
The present invention also provides a kind of recuperation of heat unit, especially, comprises heat recovery system as above.
Wherein, the capillary s of the first cross valve 71 is fixed in the suction line between the first magnetic valve 81 and compressor 10 by fixture, and/or, the capillary s of the second cross valve 72 is fixed in the suction line between the second magnetic valve 82 and compressor 10 by fixture, prevents the capillary s on cross valve from shattering in running.
Preferably, fixture is geometrical clamp.
In order to better the present invention is described, now describing above-mentioned heat recovery system operation principle in detail, wherein circulating for water heating, heat circulation and water heating defrost circulation:
Water heating circulates:
High temperature and high pressure gas discharged by compressor 10, communicate through the first cross valve 71(and D, C) communicate to the second cross valve 72(and D, E), to hot water heat exchanger 30 condensation, refrigerant becomes high pressure supercooled liquid, through the second check valve 92 and fluid reservoir 50, go out saturated solution and become low-temp low-pressure vehicle repair major through the second electric expansion valve 102 throttling, communicate through S, C of the second cross valve 72(wherein the second cross valve 72 after flashing to low-temp low-pressure gas to finned heat exchanger 20), second magnetic valve 82 is opened, absorbed by compressor 10 through gas-liquid separator 60, complete a circulation.
Heat circulation:
High temperature and high pressure gas discharged by compressor 10, through the first cross valve 71(i.e. D of the first cross valve, E communicates) become high pressure supercooled liquid to refrigerant after air-condition heat exchanger 40 condensation, through the first check valve 91, fluid reservoir 50, go out saturated solution and become low-temp low-pressure vehicle repair major through the second electric expansion valve 102 throttling, through the second cross valve 72(i.e. D of the second cross valve after flashing to low-temp low-pressure gas to finned heat exchanger 20, C communicates) to the first cross valve 71(i.e. S of the first cross valve, C communicates), first magnetic valve 81 is opened, absorbed by compressor through gas-liquid separator 60, complete a circulation.
Water heating defrost circulates:
High temperature and high pressure gas discharged by compressor 10, through the first cross valve 71(i.e. D of the first cross valve, C communicates) to the second cross valve 72(i.e. D of the second cross valve, C communicates) become high pressure supercooled liquid to refrigerant after finned heat exchanger 20 condensation, through the 3rd check valve 93, fluid reservoir 50, go out saturated solution through the 3rd magnetic valve 83 and defrost capillary, defrost capillary-compensated becomes low-temp low-pressure vehicle repair major, through the second cross valve 72(i.e. E of the second cross valve after flashing to low-temp low-pressure gas to hot water heat exchanger 30, S-phase is led to), second magnetic valve 82 is opened and is absorbed by compressor 10 through gas-liquid separator 60, complete a circulation.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a heat recovery system, comprising:
Compressor (10);
First cross valve (71) and the second cross valve (72), the D pipe of described first cross valve (71) is connected with the exhaust end of compressor (10), the D pipe of described second cross valve (72) is connected with the C pipe of described first cross valve (71), and the S pipe of described first cross valve (71) is all connected with the suction end of described compressor (10) with the S pipe of described second cross valve (72);
Finned heat exchanger (20), the first end of described finned heat exchanger (20) is connected with the C pipe of described second cross valve (72);
Air-condition heat exchanger (40), the first end of described air-condition heat exchanger (40) is connected with the E pipe of described first cross valve (71), and the second end of described air-condition heat exchanger (40) is connected with the second end of described finned heat exchanger (20);
Hot water heat exchanger (30), the first end of described hot water heat exchanger (30) is connected with the E pipe of described second cross valve (72), and the second end of described hot water heat exchanger (30) is connected with the first end of described finned heat exchanger (20);
First magnetic valve (81), one end of described first magnetic valve (81) is connected with the S pipe of described first cross valve (71), and the other end is connected with the suction end of described compressor (10);
Second magnetic valve (82), one end of described second magnetic valve (82) is connected with the S pipe of described second cross valve (72), and the other end is connected with the suction end of described compressor (10);
It is characterized in that, the pilot slide valve of described first cross valve (71) and the pilot slide valve of described second cross valve (72) include capillary s, and the capillary s of described first cross valve (71) is connected with the suction line between described first magnetic valve (81) and described compressor (10); The capillary s of described second cross valve (72) is connected with the suction line between described second magnetic valve (82) and described compressor (10).
2. heat recovery system according to claim 1, is characterized in that:
Capillary d on the pilot slide valve of described second cross valve (72) is connected with the D pipe of described first cross valve (71).
3. heat recovery system according to claim 1 and 2, is characterized in that:
Also comprise gas-liquid separator (60), the outlet of described gas-liquid separator (60) is connected with the suction end of described compressor (10), and the import of described gas-liquid separator (60) is all connected with the other end of described first magnetic valve (81) and the other end of described second magnetic valve (82).
4. heat recovery system according to claim 3, is characterized in that:
The capillary s of described first cross valve (71) is all connected with the import of described gas-liquid separator with the capillary s of described second cross valve (72).
5. heat recovery system according to claim 1 and 2, is characterized in that:
Also comprise reservoir (50), the second end of described air-condition heat exchanger (40) is all connected with described reservoir (50) with the first end of the second end of described hot water heat exchanger (30) and described finned heat exchanger (20).
6. heat recovery system according to claim 5, is characterized in that:
The first check valve (91) and the first electric expansion valve (101) has been arranged in parallel between described reservoir (50) and described air-condition heat exchanger (40).
7. heat recovery system according to claim 5, is characterized in that:
The 3rd check valve (93) and the second electric expansion valve (102) has been arranged in parallel between described reservoir (50) and described finned heat exchanger (20).
8. heat recovery system according to claim 5, is characterized in that:
Be arranged in parallel the second check valve (92) and defrost capillary (110) between described reservoir (50) and described hot water heat exchanger (30), described defrost capillary (110) place branch road has also been provided with magnetic valve (83).
9. heat recovery system according to claim 5, is characterized in that:
The second check valve (92) and defrost electric expansion valve has been arranged in parallel between described reservoir (50) and described hot water heat exchanger (30).
10. a recuperation of heat unit, is characterized in that, comprises the heat recovery system as described in claim 1 to 9 any one.
11. recuperation of heat units according to claim 10, is characterized in that:
The capillary s of described first cross valve (71) is fixed in the suction line between described first magnetic valve (81) and described compressor (10) by fixture, and/or the capillary s of described second cross valve (72) is fixed in the suction line between described second magnetic valve (82) and described compressor (10) by fixture.
12. recuperation of heat units according to claim 11, is characterized in that: described fixture is geometrical clamp.
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| CN201310469981.XA CN104567094B (en) | 2013-10-10 | 2013-10-10 | Heat recovery system and there is its recuperation of heat unit |
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| CN201310469981.XA CN104567094B (en) | 2013-10-10 | 2013-10-10 | Heat recovery system and there is its recuperation of heat unit |
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| CN104567094B CN104567094B (en) | 2017-12-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940796A (en) * | 2017-12-11 | 2018-04-20 | 广东美的暖通设备有限公司 | The startup control method of multi-line system and its outdoor unit |
| CN110375457A (en) * | 2019-07-22 | 2019-10-25 | 珠海格力电器股份有限公司 | The control method of coolant circulating system, air-conditioning system and coolant circulating system |
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| CN110375457A (en) * | 2019-07-22 | 2019-10-25 | 珠海格力电器股份有限公司 | The control method of coolant circulating system, air-conditioning system and coolant circulating system |
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| CN104567094B (en) | 2017-12-08 |
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Effective date of registration: 20180425 Address after: 519070, Jinji Hill Road, front hill, Zhuhai, Guangdong Co-patentee after: GREE ELECTRIC APPLIANCES (SHIJIAZHUANG) Co.,Ltd. Patentee after: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI Address before: 519070 golden hill west road, Qianshan, Xiangzhou District, Zhuhai, Guangdong Patentee before: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI |