CN201852359U - Two-stage series heat pump unit - Google Patents
Two-stage series heat pump unit Download PDFInfo
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- CN201852359U CN201852359U CN2010205704766U CN201020570476U CN201852359U CN 201852359 U CN201852359 U CN 201852359U CN 2010205704766 U CN2010205704766 U CN 2010205704766U CN 201020570476 U CN201020570476 U CN 201020570476U CN 201852359 U CN201852359 U CN 201852359U
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Abstract
The utility model relates to a two-stage series heat pump unit, which comprises two heat pump units, wherein each heat pump unit mainly comprises a compressor, a condenser, an evaporator and a throttle valve, and the heat pump units are connected by pipelines to form two independent refrigeration working medium circulation loops. The two condensers of the two heat pump units are mutually connected in series to form a two-stage shell and tube heat exchanger, and hot water flows into a hot water inlet, sequentially flows through the second-stage and first-stage condensers to be heated step by step and then flows out. The two evaporators of the two heat pump units are mutually connected in series to form a shell and tube heat exchanger, and cold water is sequentially cooled by the first-stage and second-stage evaporators step by step and then flows out. In the heat pump unit, the hot water with a lower temperature can be heated to a higher temperature step by step, the cold water is cooled step by step according to the direction opposite to the temperature rising direction of the hot water, so that the temperature difference between the hot water and the cold water at inlets and outlets of the heat pumps, and thus the utilization efficiency of comprehensive energy of a system is improved.
Description
Affiliated technical field
The utility model belongs to technical field of heat pumps, relates to a kind of source pump of two-stage tandem, is the source pump of the two-stage tandem of a kind of being particularly suitable for " the big temperature difference, the low discharge " method of operation.
Background technology
Along with reaching its maturity of heat pump techniques, various underground water, surface water or the industrial waste waters etc. of utilizing have been widely used in refrigeration, heating and the hot water supply system for the heat pump techniques of thermal source.The coefficient of performance of source pump just is the key factor of decision efficiency of energy utilization.(water) source, ground source pump adopts the method for operation of big " the big temperature difference, low discharge ", can significantly reduce the transmission ﹠ distribution energy consumption of system and the investment of pipe network system.When (water) source, common ground source pump is taked the method for operation of " the big temperature difference, low discharge ", under the certain situation of inflow temperature, the rising of hot water supply water temperature, cold water leaving water temperature are reduced, thereby cause the rising of condensing pressure and the reduction of evaporating pressure, cause systematic function coefficient (COP) to reduce, efficiency of energy utilization reduces.
Summary of the invention
The purpose of this utility model is exactly when taking the method for operation of " the big temperature difference, low discharge " at (water) source, common ground source pump, existing systematic function coefficient (COP) reduces, the problem that efficiency of energy utilization reduces, and when providing a kind of and all take at hot and cold source the method for operation of " the big temperature difference, low discharge ", the source pump of a kind of two-stage tandem that the efficiency of energy utilization of its unit is improved significantly than the energy utilization rate of ordinary hot pump assembly.
Technical solution of the present utility model is: a kind of source pump of two-stage tandem, comprise first heat pump unit and second heat pump unit, first heat pump unit is mainly by first order compressor, first order condenser, first evaporator and throttle valve A are formed, second heat pump unit is mainly by high stage compressor, second level condenser, second level evaporimeter and choke valve B form, two heat pump units all connect into two separate refrigeration working medium closed circuits by pipeline, its principal character is: the first order condenser of two heat pump units and second level condenser are connected mutually becomes the shell-and-tube heat exchanger of a two-stage, hot water enters from the hot water inlet of second heat pump unit, and flow through successively second level condenser and first order condenser heat the back step by step and flow out; The first evaporator of two heat pump units and second level evaporator series become a shell-and-tube heat exchanger, and cold water enters from the cooling water inlet of first heat pump unit, and flow out flow through successively first evaporator and the second level evaporimeter back that lowers the temperature step by step.
The beneficial effects of the utility model are: hot water intensification direction is opposite with the cooling direction of cold water, has reduced the temperature difference of evaporimeter and condenser, has reduced irreversible heat transfer loss, and the coefficient of performance of unit integral body is improved; Adopt the mode of source pump series connection, can choose different heat pump units, guarantee that every heat pump can be in its efficient operating mode operation according to the operating mode of different temperature gradient sections; Adopt the mode of temperature step lifting, can obtain the hot water of higher temperature, can also use the hot water requirement according to the user simultaneously, regulate the leaving water temperature of hot water by control operation of heat pump platform number; Confession, the backwater temperature difference of cold water and hot water are bigger, have reduced the transmission ﹠ distribution energy consumption and the pipe network investment of system.In a word, because unit is a kind of source pump of two-stage tandem, when adopting " the big temperature difference, low discharge " method of operation, lower hot water step can be heated to higher temperature, cold water is then according to the direction step cooling opposite with the hot water intensification, strengthened hot water and cold water the temperature difference, improved the comprehensive energy utilization ratio of system at the heat pump import and export.
Below, in conjunction with the accompanying drawings the utility model is further specified.
Description of drawings
Fig. 1 is a schematic flow sheet of the present utility model.
Among the figure: 1, first heat pump unit; 2, hot water outlet; 3, first order condenser; 4, second level condenser; 5, hot water inlet; 6, second heat pump unit; 7, high stage compressor; 8, cooling water outlet; 9, second level evaporimeter; 10, choke valve B; 11, throttle valve A; 12, first evaporator; 13, cooling water inlet; 14, first order compressor.
The specific embodiment
The utility model embodiment as shown in Figure 1.Unit comprises first heat pump unit (1) and second heat pump unit (6).First heat pump unit (1) mainly is made up of first order compressor (14), first order condenser (3), first evaporator (12) and throttle valve A (11).Second heat pump unit (6) mainly is made up of high stage compressor (7), second level condenser (4), second level evaporimeter (9) and choke valve B (10).First heat pump unit (1) and second heat pump unit (6) all connect into independently refrigeration working medium closed circuit by pipeline.The first order condenser (3) of first heat pump unit (1) and the second level condenser (4) of second heat pump unit (6) are connected mutually becomes the shell-and-tube heat exchanger of a two-stage, the hot water that is flow to by hot water inlet (5) is flowed through after second level condenser (4) and first order condenser (3) heat step by step successively, is flowed out by hot water outlet (2).The first evaporator (12) of first heat pump unit (1) is connected with the second level evaporimeter (9) of second heat pump unit (6) becomes the shell-and-tube heat exchanger of a two-stage, flow to cold water by cooling water inlet (13) and flow through successively after first evaporator (12) and second level evaporimeter (9) lower the temperature step by step, flow out by cooling water outlet (8).
As shown in Figure 1, after hot water enters unit from hot water inlet (5), through second level condenser (4), first order condenser (3) cascade raising temperature, flow out successively by hot water outlet (2).Cold water is lowered the temperature through first evaporator (12), second level evaporimeter (9) after entering unit from cooling water inlet (13) successively step by step, is flowed out by cooling water outlet (8).The intensification direction of hot water is opposite with the cooling direction of cold water, has reduced the temperature difference of evaporimeter (12,9) and condenser (3,4), has reduced irreversible heat transfer loss, and the coefficient of performance of unit integral body is improved; Adopt the mode of two heat pump units (1,6) series connection, can choose different heat pump units, guarantee that each heat pump unit can move under its efficient operating mode according to the operating mode of different temperature gradient sections; Adopt the mode of temperature step lifting, can produce the hot water of higher temperature and the cold water of lower temperature, can also regulate the leaving water temperature of hot water or cold water by control operation of heat pump platform number according to the instructions for use of user simultaneously hot water or cold water; Confession, the backwater temperature difference of cold water and hot water are bigger, have reduced the transmission ﹠ distribution energy consumption and the pipe network investment of system.In a word, because unit is a kind of source pump of two-stage tandem, when adopting " the big temperature difference, low discharge " method of operation, lower hot water step can be heated to higher temperature, cold water is then according to the direction step cooling opposite with the hot water intensification, strengthened hot water and cold water the temperature difference, improved the comprehensive energy utilization ratio of system at the heat pump import and export.
Claims (1)
1. the source pump of a two-stage tandem, comprise first heat pump unit (1) and second heat pump unit (6), first heat pump unit (1) is mainly by first order compressor (14), first order condenser (3), first evaporator (12) and throttle valve A (11) are formed, second heat pump unit (6) is mainly by high stage compressor (7), second level condenser (4), second level evaporimeter (9) and choke valve B (10) form, two heat pump units (1,6) all connect into two separate refrigeration working medium closed circuits by pipeline, its principal character is: the first order condenser (3) of two heat pump units and second level condenser (4) are connected mutually becomes the shell-and-tube heat exchanger of a two-stage, hot water enters from the hot water inlet (5) of second heat pump unit (6), and flow through successively second level condenser (4) and first order condenser (3) heat the back step by step and flow out; A first evaporator of two heat pump units (12) and a shell-and-tube heat exchanger of second level evaporimeter (9) series connection becoming, cold water enters from the cooling water inlet (13) of first heat pump unit (1), and flow out flow through successively first evaporator (12) and second level evaporimeter (9) back that lowers the temperature step by step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205704766U CN201852359U (en) | 2010-10-16 | 2010-10-16 | Two-stage series heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205704766U CN201852359U (en) | 2010-10-16 | 2010-10-16 | Two-stage series heat pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201852359U true CN201852359U (en) | 2011-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205704766U Expired - Fee Related CN201852359U (en) | 2010-10-16 | 2010-10-16 | Two-stage series heat pump unit |
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| Country | Link |
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| CN (1) | CN201852359U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013171274A1 (en) * | 2012-05-16 | 2013-11-21 | Efficient Energy Gmbh | Heat pump system and method for pumping heat |
| CN105222340A (en) * | 2015-10-30 | 2016-01-06 | 江门市达能环保节能科技有限公司 | The heat pump hot-water system of shunting strengthening backheat |
| CN106895605A (en) * | 2017-04-18 | 2017-06-27 | 深圳佩尔优科技有限公司 | Low Temperature Thermal waste water high-efficiency utilizes system and its control method |
| US10072644B2 (en) | 2016-08-10 | 2018-09-11 | Kickstart International, Inc. | Portable alternative-energy powered pump assembly |
| CN109708180A (en) * | 2019-02-21 | 2019-05-03 | 苏州必信空调有限公司 | Its heat-exchange system and application its thermoelectric heating system of a kind of big temperature difference temperature rise heat exchanger and application |
| CN110487058A (en) * | 2019-08-30 | 2019-11-22 | 圣春新能源科技有限公司 | A kind of sludge heat pump drying system |
| CN110595101A (en) * | 2019-10-22 | 2019-12-20 | 鄂尔多斯市泰利嘉新能源有限公司 | Heat pump cold and hot dual-purpose system |
-
2010
- 2010-10-16 CN CN2010205704766U patent/CN201852359U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013171274A1 (en) * | 2012-05-16 | 2013-11-21 | Efficient Energy Gmbh | Heat pump system and method for pumping heat |
| CN105222340A (en) * | 2015-10-30 | 2016-01-06 | 江门市达能环保节能科技有限公司 | The heat pump hot-water system of shunting strengthening backheat |
| CN105222340B (en) * | 2015-10-30 | 2017-07-11 | 江门市达能环保节能科技有限公司 | Shunting strengthens the heat pump hot-water system of backheat |
| US10072644B2 (en) | 2016-08-10 | 2018-09-11 | Kickstart International, Inc. | Portable alternative-energy powered pump assembly |
| US10968902B2 (en) | 2016-08-10 | 2021-04-06 | Kickstart International, Inc. | Portable alternative-energy powered pump assembly |
| CN106895605A (en) * | 2017-04-18 | 2017-06-27 | 深圳佩尔优科技有限公司 | Low Temperature Thermal waste water high-efficiency utilizes system and its control method |
| CN109708180A (en) * | 2019-02-21 | 2019-05-03 | 苏州必信空调有限公司 | Its heat-exchange system and application its thermoelectric heating system of a kind of big temperature difference temperature rise heat exchanger and application |
| CN110487058A (en) * | 2019-08-30 | 2019-11-22 | 圣春新能源科技有限公司 | A kind of sludge heat pump drying system |
| CN110595101A (en) * | 2019-10-22 | 2019-12-20 | 鄂尔多斯市泰利嘉新能源有限公司 | Heat pump cold and hot dual-purpose system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20111016 |