CN103148584B - Two-stage compression heat pump Hot water units - Google Patents
Two-stage compression heat pump Hot water units Download PDFInfo
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- CN103148584B CN103148584B CN201310013217.1A CN201310013217A CN103148584B CN 103148584 B CN103148584 B CN 103148584B CN 201310013217 A CN201310013217 A CN 201310013217A CN 103148584 B CN103148584 B CN 103148584B
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Abstract
The present invention relates to a kind of two-stage compression heat pump Hot water units, feature comprises the first compressor, evaporimeter, coupling intercooler, first throttle device, the second compressor, condenser, the second throttling arrangement, middle heated pool and high-temperature pool, be provided with heat exchanger in cooler in a coupling, the exhaust outlet of the first compressor is connected with the intercooler that is coupled; After evaporimeter is connected with first throttle device, the air intake UNICOM of one end and the first compressor, the other end is connected with the intercooler that is coupled; The air intake of the second compressor is connected with the intercooler that is coupled; After condenser is connected with the second throttling arrangement, the exhaust outlet of one end and the second compressor is connected, and the other end is connected with the intercooler that is coupled.It can produce the high temperature circulation hot water of warm circulating hot water in about 55 DEG C and about 80 DEG C simultaneously, and comprehensive energy efficiency is than high, good economy performance, stable.
Description
Technical field
The present invention relates to two-stage compression heat pump techniques, especially a kind of heat-pump hot-water unit producing the complete cooling during rolling high temperature of coupled outside type Two-stage Compression twin-stage throttling of industrial cycle hot water.
Background technology
Heat pump techniques is that a kind of high efficient energy sources utilize technology, is widely used in the many-sides such as life, production.At present, the highest hot water temperature that the single stage compress heat-pump hot-water unit utilizing heat pump techniques to develop generally produces is below 60 DEG C, and in the industrial production as plating, clothes, food and the circulating hot water that industry needs about 80 DEG C in a large number such as to butcher, single stage compress technology is difficult to effective solution.Adopt cascade type heat pump technology and two-stage compression heat pump technology can produce the hot water of 80 DEG C, but because its relative generation hot water temperature is at the single-stage heat pump of about 55 DEG C, systematic energy efficiency ratio is lower, simultaneously there is a coupled problem between the high temperature heat pump system of above-mentioned high temperature heat pump unit and hot pump in low temp system, as bad in being coupled between two-stage, the Energy Efficiency Ratio of unit will reduce further, and unit operation stability is also poor.Based on above-mentioned many reasons, its application is in the industrial production limited by very large.Only have and effectively solve the problem, heat pump techniques just can be made to be more widely used, play larger economic benefit and social benefit.
Summary of the invention
The object of this invention is to provide a kind of two-stage compression heat pump Hot water units, the high temperature circulation hot water of warm circulating hot water in about 55 DEG C and about 80 DEG C can be produced simultaneously, satisfy the demand simultaneously and use the place of about 55 DEG C and about 80 DEG C circulating hot waters in a large number, particularly material can the place of heat stepwise, makes unit comprehensive energy efficiency than high, good economy performance, stable.
In order to achieve the above object, the present invention is achieved in that it is a kind of two-stage compression heat pump Hot water units, it is characterized in that comprising:
First compressor;
Coupling intercooler, in described coupling intercooler, be provided with heat exchanger, the exhaust outlet of the low-pressure stage cold-producing medium of described first compressor is connected with the intercooler that is coupled;
Evaporimeter and first throttle device, after described evaporimeter is connected with first throttle device, the air intake UNICOM of one end and the first compressor, the other end is connected with the intercooler that is coupled;
Second compressor, the air intake of described second compressor is connected with the intercooler that is coupled;
Condenser and the second throttling arrangement, after described condenser is connected with the second throttling arrangement, the exhaust outlet of one end and the second compressor is connected, and the other end is connected with the intercooler that is coupled;
Middle heated pool, the delivery port of described middle heated pool and water inlet, respectively by the water inlet of two connecting tubes and heat exchanger and delivery port UNICOM, a connecting tube are provided with the first water pump; With
High-temperature pool, the delivery port of described high-temperature pool and water inlet, respectively by the water inlet of two connecting tubes and condenser and delivery port UNICOM, a connecting tube are provided with the second water pump; High-temperature pool and middle heated pool are communicated with one another by connecting tube, and the connecting tube of UNICOM's high-temperature pool and middle heated pool is provided with the first stop valve.
Described high-temperature pool and middle heated pool are by two connecting tube UNICOMs, and described first stop valve is located in a connecting tube, and another root connecting tube is provided with the second stop valve and the 3rd water pump.
Described coupling intercooler comprises middle chamber, left water cavity and right water cavity; On described middle chamber, be wherein respectively equipped with the exhaust inlet pipe of low-pressure stage cold-producing medium, the feed flow outlet of low-pressure stage cold-producing medium, the return air outlet pipe returning liquid inlet tube and hiigh pressure stage cold-producing medium of hiigh pressure stage cold-producing medium, the exhaust outlet UNICOM of described exhaust inlet pipe and the first compressor, described feed flow outlet communicates with the entrance of first throttle device, described time liquid inlet tube communicates with the air intake of the second compressor, and described return air outlet pipe communicates with the gas outlet of the second throttling arrangement; Described left water cavity is arranged on the left side of middle chamber and isolates mutually, and left water cavity is provided with oral siphon; Described right water cavity is arranged on the right side of middle chamber and isolates mutually, and right water cavity is provided with outlet pipe; Described heat exchanger is arranged in middle chamber, one end of heat exchanger and left water cavity UNICOM, the other end and right water cavity UNICOM; The delivery port of described middle heated pool is communicated by the oral siphon of connecting tube with left water cavity, and the water inlet of middle heated pool is communicated by the outlet pipe of connecting tube with right water cavity.
The mouth of pipe of described exhaust inlet pipe, the mouth of pipe returning liquid inlet tube all to go deep in middle chamber and are positioned at below cold-producing medium liquid level, the mouth of pipe of described return air outlet pipe is positioned at middle chamber and more than cold-producing medium liquid level, the mouth of pipe of described feed flow outlet is positioned at bottom middle chamber.
Described heat exchanger comprises the heat exchanger tube of more than two, and described heat exchanger tube can be metal straight pipe or metallic coil or metal coil pipe.
Hinge structure of the present invention has a little following:
1) owing to being provided with outcoupling system, the operating condition of hot pump in low temp system and high temperature heat pump system can be regulated preferably, Two-stage Heat Pump System is coupled good, improve the Energy Efficiency Ratio of unit;
2) the heat part produced is as the heat absorption thermal source of high temperature heat pump system, and warm water in another part production, in supplying needed for temperature heating production technology, unit comprehensive energy efficiency ratio is greatly improved.
Accompanying drawing explanation
Fig. 1 is structure of the present invention and schematic flow sheet;
Fig. 2 is the structural representation of coupling intercooler of the present invention;
Fig. 3 is principle diagram of electric control of the present invention.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and in figure, same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, term " first ", " second " and " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
As shown in Figure 1, 2, it is a kind of two-stage compression heat pump Hot water units, and it comprises:
First compressor 1;
Coupling intercooler 2, in described coupling intercooler 2, be provided with heat exchanger 210, the exhaust outlet of the low-pressure stage cold-producing medium of described first compressor 1 is connected with the intercooler 2 that is coupled;
Evaporimeter 4 and first throttle device 3, after described evaporimeter 4 is connected with first throttle device 3, the air intake UNICOM of one end and the first compressor 1, the other end is connected with the intercooler 2 that is coupled;
Second compressor 5, the air intake of described second compressor 5 is connected with the intercooler 2 that is coupled;
Condenser 6 and the second throttling arrangement 7, after described condenser 6 is connected with the second throttling arrangement 7, the exhaust outlet of one end and the second compressor 5 is connected, and the other end is connected with the intercooler 2 that is coupled;
Middle heated pool 9, the delivery port of described middle heated pool 9 and water inlet, respectively by the water inlet of two connecting tubes and heat exchanger 210 and delivery port UNICOM, a connecting tube are provided with the first water pump 8; With
High-temperature pool 13, the delivery port of described high-temperature pool 13 and water inlet, respectively by the water inlet of two connecting tubes and condenser 6 and delivery port UNICOM, a connecting tube are provided with the second water pump 14; High-temperature pool 13 and middle heated pool 9, by connecting tube UNICOM, high-temperature pool 13 with the connecting tube of middle heated pool 9 are provided with the first stop valve 11.
In the present embodiment, described high-temperature pool 13 and middle heated pool 9 are by two connecting tube UNICOMs, and described first stop valve 11 is located in a wherein connecting tube, and another root connecting tube is provided with the second stop valve 10 and the 3rd water pump 12.
During work, after the first compressor 1 compresses, high temperature and high pressure gas is become by the refrigerant gas of evaporimeter 4, enter coupling intercooler 2 be condensed into liquid and be stored in coupling intercooler 2, the refrigerant liquid be stored in coupling intercooler 2 becomes Low temperature low pressure liquid after first throttle device 3 throttling, refrigerant gas is become again after evaporimeter 4 with external heat source heat exchange, return the first compressor 1, complete hot pump in low temp system circulation.After the second compressor 5 compresses, high temperature and high pressure gas is become by the refrigerant gas of coupling intercooler 2, highly pressurised liquid is condensed into after condenser 6 with the recirculated water heat exchange of high-temperature pool 13, Low temperature low pressure liquid is become after the second throttling arrangement 7 throttling, enter coupling intercooler 2, the refrigerant gas produced in coupling intercooler 2 returns compressor 5, completes high temperature heat pump system circulation.Recirculated water in high-temperature pool 13 is heated, needed for high-temperature heating production technology after the second water pump 14 with condenser 6 heat exchange.Recirculated water in middle heated pool 9 is heated after the refrigerant liquid heat exchange be coupled in intercooler 2 through the first water pump 8, in supplying needed for temperature heating production technology.When because coupling control needs hot pump in low temp system out of service, high temperature heat pump needs continue to run unit in the course of the work, recirculated water in middle heated pool 9 continues circulation through the first water pump 8, utilize self heat conversely to the refrigerant liquid heating in coupling intercooler 2, as the heat absorption thermal source of high temperature heat pump system, meet high temperature heat pump system and run needs.
As shown in Figure 2, in the present embodiment, described coupling intercooler 2 comprises middle chamber 22, left water cavity 21 and right water cavity 24; On described middle chamber 22, be wherein respectively equipped with the exhaust inlet pipe 27 of low-pressure stage cold-producing medium, the feed flow outlet 23 of low-pressure stage cold-producing medium, the return air outlet pipe 28 returning liquid inlet tube 29 and hiigh pressure stage cold-producing medium of hiigh pressure stage cold-producing medium, the exhaust outlet UNICOM of described exhaust inlet pipe 27 and the first compressor 1, described feed flow outlet 23 communicates with the entrance of first throttle device 3, described time liquid inlet tube 29 communicates with the air intake of the second compressor 5, and described return air outlet pipe 28 communicates with the gas outlet of the second throttling arrangement 7; Described left water cavity 21 is arranged on the left side of middle chamber 22 and isolates mutually, and left water cavity 21 is provided with oral siphon 212; Described right water cavity 24 is arranged on the right side of middle chamber 22 and isolates mutually, and right water cavity 24 is provided with outlet pipe 25; Described heat exchanger 210 is arranged in middle chamber 22, one end of heat exchanger 210 and left water cavity 21 UNICOM, the other end and right water cavity 24 UNICOM; The delivery port of described middle heated pool 9 is communicated by the oral siphon 212 of connecting tube with left water cavity 21, and the water inlet of middle heated pool 9 is communicated by the outlet pipe 25 of connecting tube with right water cavity 24.
As shown in Figure 2, in the present embodiment, the mouth of pipe of described exhaust inlet pipe 27, the mouth of pipe returning liquid inlet tube 29 all to go deep in middle chamber 22 and are positioned at below cold-producing medium liquid level, the mouth of pipe of described return air outlet pipe 28 is positioned at middle chamber 22 and more than cold-producing medium liquid level, the mouth of pipe of described feed flow outlet 23 is positioned at bottom middle chamber 22.
As shown in Figure 2, in the present embodiment, described heat exchanger 210 comprises the heat exchanger tube of more than two, and described heat exchanger tube can be metal straight pipe or metallic coil or metal coil pipe.
As shown in Figure 3, this control of the present invention is such realization: when unit initial launch, water temperature in middle heated pool 9 and high-temperature pool 13 is normal temperature, close a switch SB8, and the first water pump 8 brings into operation, and the water in middle heated pool 9 starts circulation, open the first stop valve 11 and the second stop valve 10 on the UNICOM's pipeline between middle heated pool 9 and high-temperature pool 13 simultaneously, close a switch SB12, and the 3rd water pump 12 brings into operation, and circulated in the water inside in middle heated pool 9 and high-temperature pool 13.Now be in closure state in middle heated pool cooling-water temperature sensor T, in the hot pump in low temp system of this unit, the blower fan of evaporimeter 4 and the first compressor 1 bring into operation, start to raise with the water temperature T height in high-temperature pool 13 in water temperature T in middle heated pool 9 simultaneously, when reaching middle heated pool setting lower limit temperature T1, cut-off switch SB12,3rd water pump 12 is out of service, closes the second stop valve 10 and the first stop valve 11.Close a switch SB14, second water pump 14 brings into operation, water in high-temperature pool 13 starts circulation, now high-temperature pool cooling-water temperature sensor T eminence is in closure state, high temperature heat pump system second compressor 5 of this unit brings into operation, when the water temperature T in high-temperature pool 13 is up to during to capping temperature T4, high temperature heat pump system quits work.When the water temperature T of high-temperature pool 13 is high drop to setting lower limit temperature T3 time, high temperature heat pump system restarts.When reaching capping temperature T2 in the water temperature T of central heated pool 9, hot pump in low temp system is out of service.Now, if high temperature heat pump system still needs to continue to run, because of in water in heated pool 9 all the time in circulation, can heat the refrigerant liquid in coupling intercooler 2 conversely, as the heat absorption thermal source of high temperature heat pump system, ensure the normal operation of high temperature heat pump system.When dropping to setting lower limit temperature T1 in the water temperature T in central heated pool 9, hot pump in low temp system restarts.Upper and lower limit temperature T4, the T3 setting that water temperature T in high-temperature pool 13 is high is determined by production technology, upper and lower limit temperature T2, T1 setting in water temperature T in middle heated pool 9 runs evaporating temperature according to hot pump in low temp system and high temperature heat pump system operation condensation temperature regulates, thus control the medium temperature of two levels of thermal pumping system, make good coupling between the two.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and distortion to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (3)
1. a two-stage compression heat pump Hot water units, is characterized in that comprising:
First compressor (1);
Coupling intercooler (2); Described coupling intercooler (2) comprises middle chamber (22), left water cavity (21) and right water cavity (24); On described middle chamber (22), be wherein respectively equipped with the exhaust inlet pipe (27) of low-pressure stage cold-producing medium, the feed flow outlet (23) of low-pressure stage cold-producing medium, the return air outlet pipe (28) returning liquid inlet tube (29) and hiigh pressure stage cold-producing medium of hiigh pressure stage cold-producing medium, the exhaust outlet UNICOM of the low-pressure stage cold-producing medium of described exhaust inlet pipe (27) and the first compressor (1), described left water cavity (21) is arranged on the left side of middle chamber (22) and isolates mutually, and left water cavity (21) is provided with oral siphon (212); Described right water cavity (24) is arranged on the right side of middle chamber (22) and isolates mutually, and right water cavity (24) is provided with outlet pipe (25); Heat exchanger (210) is arranged in middle chamber (22), one end of described heat exchanger (210) and left water cavity (21) UNICOM, the other end and right water cavity (24) UNICOM;
Evaporimeter (4) and first throttle device (3), after described evaporimeter (4) is connected with first throttle device (3), the air intake UNICOM of one end and the first compressor (1), the other end and feed flow outlet (23) and UNICOM;
Second compressor (5), the air intake of described second compressor (5) communicates with return air outlet pipe (28);
Condenser (6) and the second throttling arrangement (7), after described condenser (6) is connected with the second throttling arrangement (7), the exhaust outlet of one end and the second compressor (5) is connected, the other end and time liquid inlet tube (29) UNICOM;
Middle heated pool (9), the delivery port of described middle heated pool (9) is communicated with the oral siphon (212) of left water cavity (21) by connecting tube, the water inlet of middle heated pool (9) is communicated with the outlet pipe (25) of right water cavity (24) by connecting tube, and a connecting tube is provided with the first water pump (8); With
High-temperature pool (13), the delivery port of described high-temperature pool (13) and water inlet, respectively by the water inlet of two connecting tubes and condenser (6) and delivery port UNICOM, a connecting tube are provided with the second water pump (14); Described high-temperature pool (13) and middle heated pool (9), by two connecting tube UNICOMs, a connecting tube are provided with the first stop valve (11), another root connecting tube are provided with the second stop valve (10) and the 3rd water pump (12).
2. two-stage compression heat pump Hot water units according to claim 1, it is characterized in that the mouth of pipe of described exhaust inlet pipe (27), return the mouth of pipe of liquid inlet tube (29) and all to go deep in middle chamber (22) and to be positioned at below cold-producing medium liquid level, the mouth of pipe of described return air outlet pipe (28) is positioned at middle chamber (22) and more than cold-producing medium liquid level, the mouth of pipe of described feed flow outlet (23) is positioned at middle chamber (22) bottom.
3. two-stage compression heat pump Hot water units according to claim 1, is characterized in that described heat exchanger (210) comprises the heat exchanger tube of more than two, and described heat exchanger tube is metal straight pipe or metallic coil or metal coil pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310013217.1A CN103148584B (en) | 2013-01-15 | 2013-01-15 | Two-stage compression heat pump Hot water units |
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| CN201310013217.1A CN103148584B (en) | 2013-01-15 | 2013-01-15 | Two-stage compression heat pump Hot water units |
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| CN103148584A CN103148584A (en) | 2013-06-12 |
| CN103148584B true CN103148584B (en) | 2016-01-13 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109931703A (en) * | 2018-04-11 | 2019-06-25 | 浙江工业大学 | A kind of efficient step coupling heat pump water heater |
| CN110057127B (en) * | 2019-05-29 | 2023-12-19 | 北京华电东晟科技有限公司 | Coupling heat pump heat exchanger |
| CN110057128B (en) * | 2019-05-29 | 2023-12-19 | 北京华电东晟科技有限公司 | Coupling heat pump heat exchanger |
| CN110057126B (en) * | 2019-05-29 | 2024-01-23 | 北京华电东晟科技有限公司 | Coupling heat pump heat exchanger |
| CN113251698A (en) * | 2021-04-29 | 2021-08-13 | 太原理工大学 | Large-temperature-difference multistage compression mixed working medium heat pump system suitable for recovering waste heat of power plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101175516B1 (en) * | 2010-05-28 | 2012-08-23 | 엘지전자 주식회사 | Hot water supply device associated with heat pump |
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| CN2570706Y (en) * | 2002-09-13 | 2003-09-03 | 阎首弟 | Overlapping type hyperthermal water source heat pump apparatus |
| CN202304056U (en) * | 2011-11-09 | 2012-07-04 | 高亚民 | Double-working medium cascade directly-heated type heat pump hot water unit |
| CN102654330A (en) * | 2012-06-06 | 2012-09-05 | 顺德职业技术学院 | Coupled evaporative condenser used for cascade heat pump hot water machine |
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Effective date of registration: 20160419 Address after: 528300 Guangdong province Foshan city Shunde District Daliang Street Chang Road No. 11 Patentee after: GUANGDONG HUATIANCHENG NEW ENERGY TECHNOLOGY CO., LTD. Address before: 528300 Guangdong Province, Foshan city Shunde District Daliang Desheng Road Patentee before: Shunde Vocational-Technical College |
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Denomination of invention: Hot-water unit for twin-stage compressing heat pump Effective date of registration: 20170214 Granted publication date: 20160113 Pledgee: Shunde Guangdong rural commercial bank Limited by Share Ltd Daliang branch Pledgor: GUANGDONG HUATIANCHENG NEW ENERGY TECHNOLOGY CO., LTD. Registration number: 2017990000107 |
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Address after: 528308 Guangdong Province, Foshan city Shunde District Lunjiao Street office Yongfeng village two Industrial Zone No. 34 south of Patentee after: GUANGDONG HUATIANCHENG NEW ENERGY TECHNOLOGY CO., LTD. Address before: 528300 Guangdong province Foshan city Shunde District Daliang Street Chang Road No. 11 Patentee before: GUANGDONG HUATIANCHENG NEW ENERGY TECHNOLOGY CO., LTD. |