CN1226585C - Heat pump device - Google Patents
Heat pump device Download PDFInfo
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- CN1226585C CN1226585C CN 02126959 CN02126959A CN1226585C CN 1226585 C CN1226585 C CN 1226585C CN 02126959 CN02126959 CN 02126959 CN 02126959 A CN02126959 A CN 02126959A CN 1226585 C CN1226585 C CN 1226585C
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- cooling
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- heat exchanger
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Abstract
The present invention relates to a heat pump device, more specifically a compression ratio adjusting device of a heat pump, which can guarantee the reliability of a compressor and keep uniform efficiency. The heat pump device of the present invention is composed of a basic cooling loop (1), cooling troughs of bypass pipes, and a plurality of capillary pipes, wherein the basic cooling loop is formed by the method that a compressor (2), a four-way valve (3), an indoor heat exchanger (4), a cooling expansion valve (5), a heating expansion valve (6) and an outdoor heat exchanger (7), and the four-way valve (3) are orderly connected by guide pipes (8a), (8b), (8c) and (8d), and the four-way valve (3) and the compressor (2) are connected by a suction guide pipe (8e); the bypass pipes are arranged between the guide pipe (8c) and the suction guide pipe; the guide pipe (8c) is connected between the cooling expansion valve and the heating expansion valve; the positions of an inlet and an outlet of a cooling trough (9) of a bypass pipe (10) are respectively provided with a pressure regulating valve (11) and a solenoid valve (12); the capillary pipes are arranged in the cooling troughs; the cooling troughs are connected between a second bypass pipe and a branch pipe separated from the position of the outlet of the pressure regulating valve of the bypass pipe; the second bypass pipe is connected with the guide pipe (8b) and the guide pipe (8d).
Description
Technical field
The present invention relates to heat pump assembly, relate in particular to the compression ratio adjustment device of heat pump.
Background technology
The work of heat pump assembly is Carnot cycle (carnot cycle), and the basic cooling circuit of above-mentioned circulation as shown in Figure 1, promptly connect compressor 2, cross valve 3, indoor heat exchanger 4, cooling expansion valve 5, heating expansion valve 6, outdoor heat exchanger 7 and above-mentioned cross valve 3 with the first conduit 8a, the second conduit 8b, the 3rd conduit 8c, the 4th conduit 8d in order, and above-mentioned cross valve 3 is connected with compressor 2 usefulness suction lead 8e.
Above-mentioned heat pump assembly is when adding heat run, cross valve 3 is arranged to cooling agent and is flowed into the solid arrow direction, HTHP cooling steam in compression on the compressor 2 has flow into condensation on the indoor heat exchanger 4 of freezing machine effect, its condensation heat and air and water or other fluid carry out heat exchange, generate warm water or finish drying, air conditioning (greenhouse) function etc., and heating with after expanding on the expansion valve 6 in the HTHP cooling fluid of condensation on the above-mentioned indoor heat exchanger 4, flow into the outdoor heat exchanger 7 of evaporimeter effect, absorb heat of evaporation from heat source fluid, after forming the low-temp low-pressure cooling steam, through suction lead 8e, be drawn into compressor 2, above-mentioned repeatedly circulation.
In addition, when the cooling running, cross valve 3 is arranged to cooling agent and is flowed into the dotted arrow direction, HTHP cooling steam in compression on the compressor 2 has flowed into condensation on the outdoor heat exchanger 7 of freezing machine effect, the HTHP cooling fluid of condensation on above-mentioned outdoor heat exchanger 7, after cooling is with expansion on the expansion valve 5, flowed on the indoor heat exchanger 4 of evaporimeter effect, from absorbing heat of evaporation on every side, reach refrigerating function with this, after forming the low-temp low-pressure cooling steam, be drawn into compressor 2, above-mentioned repeatedly circulation.
In addition, above-mentioned heat pump assembly is when adding heat run, the multiple-effect rate is high more more to play the thermal discharge of cooling agent in the indoor heat exchanger 4 of freezing machine effect, and when the cooling running, the multiple-effect rate is high more more to play the caloric receptivity of cooling agent in the indoor heat exchanger 4 of evaporimeter effect, therefore, efficient when adding heat run for raising, increased the thermal discharge of cooling agent in the indoor heat exchanger 4 of freezing machine effect, the temperature of cooling steam raises in the compressor at this moment, and that external temperature plays the caloric receptivity of cooling agent in the outdoor heat exchanger 7 of evaporimeter effect when reducing is scaled, and the compression factor of compressor 2 increases.In addition, in the cooling running, external temperature plays in the outdoor heat exchanger 7 of freezing machine effect cooling steam when raising can not total condensation, and condensation temperature and evaporating temperature difference increase, so the compression factor of compressor increases.
As mentioned above, the increase of the compression factor of compressor can cause that the temperature of compression back cooling steam improves, overheat of compressor, and the lubricating oil heating reduces the confidence level of compressor, and can produce reduction volume efficiency and compression efficiency phenomenon, and efficient reduces.Therefore,, the high voltage protective switch is set on compressor usually, or adopts the transform compressor, reduce the rotation number of compressor, regulate compression factor thus for preventing above phenomenon.
But, above-mentioned compression factor regulative mode is when externally temperature is more than 5 ℃, compression factor is regulated good, efficient reduces little, but temperature adding in the heat run below 5 ℃ externally, even start near the white device of separating that is arranged on the outdoor heat exchanger 7, can not prevent to produce on the outdoor heat exchanger 7 frost fully, particularly severe cold season produces a lot of frosts, so the evaporation efficiency of cooling fluid reduces in the outdoor heat exchanger 7, can not turn round when serious.
Summary of the invention
The objective of the invention is to address the above problem, the heat pump assembly of guaranteeing the compressor confidence level and keeping even efficient is provided.
For achieving the above object, heat pump assembly of the present invention is made up of following components, promptly in order with the first conduit 8a, the second conduit 8b, the 3rd conduit 8c, the 4th conduit 8d connect compressor, cross valve, indoor heat exchanger, cooling with expansion valve, heating with expansion valve, outdoor heat exchanger and above-mentioned cross valve, and the basic cooling circuit that above-mentioned cross valve and compressor are connected with suction lead; Be arranged on the cooling bath of first bypass pipe, wherein said first bypass pipe is arranged between above-mentioned the 3rd conduit 8c and the suction lead, and above-mentioned the 3rd conduit 8c is connected cooling and uses between the expansion valve with expansion valve and heating; Be separately positioned on the pressure-regulating valve and the solenoid valve at the cooling bath entrance and exit place of above-mentioned first bypass pipe; Be arranged on a plurality of capillaries in the cooling bath, the inlet of this capillary 13 is connected on the branched pipe that separates 14 in exit of pressure-regulating valve 11 of above-mentioned first bypass pipe 10, the outlet of this capillary 13 is connected on second bypass pipe 16, wherein said cooling bath is connected between the branched pipe that the pressure-regulating valve exit of second bypass pipe and above-mentioned first bypass pipe separates, described second bypass pipe connects above-mentioned second conduit 8b and the 4th conduit 8d, wherein the second conduit 8b is connected between cross valve 3 and the indoor heat exchanger 4, and the 4th conduit 8d is connected between outdoor heat exchanger 7 and the cross valve 3.
As mentioned above, the present invention is by being provided with cooling bath, the capillary of packing in cooling bath between indoor heat exchanger and outdoor heat exchanger.The cooling steam that evaporates from capillary merges with the cooling steam that the heat exchanger delivery channel from the evaporimeter effect evaporates, and is drawn into compressor; With the cooling fluid of from cooling bath, cooling off after overexpansion, merge with cooling steam through suction lead 8e, be drawn into compressor.The compression factor of compressor can be adjusted to setting value when turning round more than setting pressure, therefore can guarantee confidence level, particularly also can protect in the heat run in adding of severe cold season and levy good compression machine effect, keeps even efficient.
Description of drawings
Fig. 1 is the structure chart of the embodiment of the invention.
The symbol description of accompanying drawing major part
1: basic cooling circuit, 2: compressor, 3: cross valve, 4: indoor heat exchanger, 7: outdoor heat exchanger, 9: cooling bath (tank), 10: the first bypass pipes (by-pass), 11: pressure-regulating valve, 12: solenoid valve, 13: capillary, 14: branched pipe, 16: the second bypass pipes
The specific embodiment
Fig. 1 is the structure chart of the embodiment of the invention, symbol 1 is basic cooling circuit, the above-mentioned basic cooling circuit 1 usefulness first conduit 8a, the second conduit 8b, the 3rd conduit 8c, the 4th conduit 8d, the compressor 2 that is linked in sequence, cross valve 3, indoor heat exchanger 4, cooling, are connected above-mentioned cross valve 3 with expansion valve 6, outdoor heat exchanger 7 and above-mentioned cross valve 3 with expansion valve 5, heating simultaneously with compressor 2 usefulness suction lead 8e.Indoor heat exchanger 4 as freezing machine, uses as evaporimeter when turning round and cool off when adding heat run; Outdoor heat exchanger 7 is used as evaporimeter when adding heat run, uses as freezing machine and cool off when turning round.
In addition, the heat-exchange fluid of above-mentioned indoor heat exchanger 4 and outdoor heat exchanger 7 optionally makes water or air, or uses water and air simultaneously.
The 9th, cooling bath, it is arranged in the middle of first bypass pipe 10, wherein said first bypass pipe 10 is connected between the 3rd conduit 8c and the suction lead 8e, and described the 3rd conduit 8c then is connected cooling and uses between the expansion valve 6 with expansion valve 5 and heating, and the outlet of above-mentioned cooling bath 9 is formed by capillary 10a.
11,12nd, pressure-regulating valve and solenoid valve, it is separately positioned on the entrance and exit place of the cooling bath 9 of above-mentioned first bypass pipe 10.
The 13rd, capillary, it is arranged in the above-mentioned cooling bath 9, its inlet is connected on the branched pipe that separates 14 in exit of pressure-regulating valve 11 of above-mentioned first bypass pipe 10, its outlet is connected on second bypass pipe 16 that connects above-mentioned second conduit 8b and the 4th conduit 8d, replenishes on above-mentioned branched pipe 14 and is provided with expansion valve 15.
In addition, porch at the pressure-regulating valve 11 of above-mentioned first bypass pipe 10 is provided with pressure (temperature) inductor 17, according to its output signal, optionally open and close above-mentioned pressure-regulating valve 11 and solenoid valve 12, (for example be added in pressure on first bypass pipe 10 and be setting pressure, cooling agent uses R-22, pressure is 1.8～2.1 MPa when adding heat run) on the time, pressure-regulating valve 11 is opened, solenoid valve 12 cuts out, and when setting pressure is following, open and close the result in contrast.
Symbol 18,19,20,21st, check-valves.
As mentioned above, the present invention is when adding heat run, cross valve 3 is arranged to cooling agent and is flowed into the solid arrow direction, HTHP cooling steam in compression on the compressor 2 has flow into condensation on the indoor heat exchanger 4 of freezing machine effect, its condensation heat and fluid thermal exchange, generate warm water or finish drying, air conditioning (greenhouse) function etc., and heating with after expanding on the expansion valve 6 in the HTHP cooling fluid of condensation on the above-mentioned indoor heat exchanger 4, flow into the outdoor heat exchanger 7 of evaporimeter effect, from absorption of fluids heat of evaporation, behind the formation low-temp low-pressure cooling steam, through suction lead 8e, be drawn into compressor 2, above-mentioned repeatedly circulation.In addition, when the cooling running, cross valve 3 is arranged to cooling agent and is flowed into the dotted arrow direction, HTHP cooling steam in compression on the compressor 2 has flowed into condensation on the outdoor heat exchanger 7 of freezing machine effect, cooling off with after expanding on the expansion valve 5 in the HTHP cooling fluid of condensation on the outdoor heat exchanger 7, flowed on the indoor heat exchanger 4 of evaporimeter effect, absorb heat of evaporation from surrounding fluid, reach refrigerating function with this, after forming the low-temp low-pressure cooling steam, through suction lead 8e, be drawn into compressor 2, above-mentioned repeatedly circulation.These circulations are identical with circulation in the past.
In above-mentioned circulation, when heating or cooling running, the caloric receptivity that plays the outdoor heat exchanger 7 of evaporimeter effect reduces, or the condensation that plays cooling steam in the indoor heat exchanger 4 of freezing machine effect is incomplete, therefore the compression factor of compressor 2 increases, the coolant pressure that flows into the 3rd conduit 8c increases, if its pressure is during greater than setting pressure, the pressure inductor 17 that is arranged on pressure-regulating valve 11 porch of first bypass pipe 10 is sensed its pressure, transmit output signal to pressure-regulating valve 11 and solenoid valve 12, and the pressure-regulating valve 11 that receives above-mentioned output signal can be opened, and the solenoid valve of originally opening 12 can cut out.
As mentioned above, when opening pressure-regulating valve 11, the part of cooling fluid that flows into the 3rd conduit 8c is through first bypass pipe 10, flow into cooling bath 9, another part is through branched pipe 14, and decompression and expansion in capillary 13 are thus with the cooling fluid heat exchange that flows into above-mentioned cooling bath 9, cooling fluid through capillary 13 becomes cooling steam, and the cooling fluid that flows into cooling bath 9 can be cooled off.
As mentioned above, cooling steam through capillary 13 generations, when adding heat run, be that pressure by the HTHP cooling steam of compression on the compressor 2 opens and closes] through second bypass pipe 16 and check-valves 20[check-valves 21, the cooling steam of evaporation on outdoor heat exchanger 7, through the 4th conduit 8d, be drawn into compressor 2; And when running cooling through second bypass pipe 16 and check-valves 21, the cooling steam of evaporation on indoor heat exchanger 4 through the second conduit 8b, is drawn into compressor 2, reduces the compression factor of compressor 2 thus.
In addition, as above reduce the compression factor of compressor 2, when the coolant pressure that flows into the 3rd conduit 8c returns to setting pressure, because stopping of the output signal of pressure inductor 17, pressure-regulating valve 11 can cut out, and solenoid valve 12 can be opened, after therefore the cooling fluid of cooling expands by the capillary 10a in formation on first bypass pipe 10 in cooling bath 9, mix with cooling steam, be drawn into compressor 2 through suction lead 8e.
And, when as above reducing the compression factor of compressor 2, only by capillary 13 decompression and expansion cooling fluids, if therefore only by capillary 13, decompression and expanding when insufficient, additional adjusting is arranged on the expansion valve 15 on the branched pipe 14, regulates its degree of superheat, and cooling fluid is well evaporated.
Claims (3)
1, a kind of heat pump assembly, it comprises: use in order first conduit (8a), second conduit (8b), the 3rd conduit (8c), the 4th conduit (8d) connect compressor (2), cross valve (3), indoor heat exchanger (4), cooling with expansion valve (5), heating with expansion valve (6), outdoor heat exchanger (7) and above-mentioned cross valve (3), and the basic cooling circuit (1) that above-mentioned cross valve (3) and compressor (2) are connected with suction lead (8e); Be arranged on the cooling bath (9) of first bypass pipe (10), wherein said first bypass pipe (10) is arranged between above-mentioned the 3rd conduit (8c) and the suction lead (8e), and above-mentioned the 3rd conduit (8c) is connected cooling and uses between the expansion valve (6) with expansion valve (5) and heating; The pressure-regulating valve (11) and the solenoid valve (12) that are provided with respectively at cooling bath (9) the entrance and exit place of above-mentioned first bypass pipe (10); Be arranged on a plurality of capillaries (13) in the cooling bath (9), the inlet of this capillary (13) is connected on the branched pipe that separates (14) in exit of pressure-regulating valve (11) of above-mentioned first bypass pipe (10), the outlet of this capillary (13) is connected on second bypass pipe (16), wherein said cooling bath (9) is connected between the branched pipe (14) that pressure-regulating valve (11) exit of second bypass pipe (16) and above-mentioned first bypass pipe (10) separates, described second bypass pipe (16) connects above-mentioned second conduit (8b) and the 4th conduit (8d), wherein second conduit (8b) is connected between cross valve (3) and the indoor heat exchanger (4), and the 4th conduit (8d) is connected between outdoor heat exchanger (7) and the cross valve (3).
2, the described heat pump assembly of claim 1 is characterized in that branched pipe is provided with expansion valve.
3, the described heat pump assembly of claim 1 is characterized in that being provided with capillary in the cooling bath exit of first bypass pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02126959 CN1226585C (en) | 2002-07-24 | 2002-07-24 | Heat pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02126959 CN1226585C (en) | 2002-07-24 | 2002-07-24 | Heat pump device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1470825A CN1470825A (en) | 2004-01-28 |
| CN1226585C true CN1226585C (en) | 2005-11-09 |
Family
ID=34143437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02126959 Expired - Fee Related CN1226585C (en) | 2002-07-24 | 2002-07-24 | Heat pump device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1226585C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1960718A4 (en) * | 2005-11-30 | 2010-09-01 | Carrier Corp | Pulse width modulated system with pressure regulating valve |
| CN102419038B (en) * | 2011-12-12 | 2013-10-09 | 广东美的暖通设备有限公司 | Air conditioning system and control method thereof |
-
2002
- 2002-07-24 CN CN 02126959 patent/CN1226585C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1470825A (en) | 2004-01-28 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051109 Termination date: 20130724 |