CN203629112U - Cooling device for two-stage heat pump system - Google Patents
Cooling device for two-stage heat pump system Download PDFInfo
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- CN203629112U CN203629112U CN201320646027.9U CN201320646027U CN203629112U CN 203629112 U CN203629112 U CN 203629112U CN 201320646027 U CN201320646027 U CN 201320646027U CN 203629112 U CN203629112 U CN 203629112U
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- condenser
- temperature level
- heat pump
- low temperature
- pump system
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Abstract
The utility model relates to a cooling device for a two-stage heat pump system. The cooling device comprises a low-temperature stage condenser, an evaporative condenser, an evaporator, a primary compressor, a high-temperature stage condenser and a secondary compressor. The low-temperature stage condenser is disposed between the evaporator and the evaporative condenser and is further connected with a controllable waterway entering pipeline, an expansion valve is disposed on a pipeline between the low-temperature stage condenser and the evaporator, and an adjustable waterway is directly connected between the low-temperature stage condenser and the high-temperature stage condenser. Heat transfer temperature difference is reduced since cooling water in the two-stage heat pump system is heated gradually; disposed among the connecting pipelines, the valves are convenient to maintain respectively, performance of the cascade-type heat pump system can be effectively improved, and heating efficiency of the system can be greatly enhanced.
Description
Technical field
The utility model belongs to technical field of heat pumps, especially a kind of Two-stage Heat Pump System cooling device.
Background technology
Now, the function of cascade type heat pump is mainly to can be used as the heat pump assembly that the large temperature difference heats up, heat pump assembly comprises low temperature level and two circulations of high temperature level, and evaporative condenser is the jockey between low temperature level and high temperature level, and the while is as the evaporimeter of low temperature level and high temperature level.But at present syndeton can realize the heat exchange between two-stage, limited but catalyst carrier heats up, more difficult two-stage is matched to optimum state.And when maintenance must entirety stop transport, and the condensed water in exhaust system completely, more difficultly carries out segmentation maintenance, efficiency is lower.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, provide a kind of simple in structure, reasonable in design, be convenient to safeguard, safe and reliable Two-stage Heat Pump System cooling device.
The utility model solves its technical problem and takes following technical scheme to realize:
A kind of Two-stage Heat Pump System cooling device, comprise low temperature level condenser, evaporative condenser, evaporimeter, for the first time compressor, high temperature level condenser and compressor for the second time, evaporimeter, evaporative condenser and first order compressor are linked in sequence and form low temperature level closed circuit; High stage compressor, high temperature level condenser and evaporative condenser are linked in sequence and form high temperature level closed circuit, and on the pipeline between evaporative condenser and high temperature level condenser, an expansion valve is installed, it is characterized in that: a low temperature level condenser is installed between described evaporimeter and evaporative condenser, this low-temperature condenser is also connected with a controlled water route intake line, and an expansion valve is installed on the pipeline between low temperature level condenser and evaporimeter; Between low temperature level condenser and high temperature level condenser, be directly connected with an adjusting water route.
And, on the pipeline on the pipeline on the pipeline between described evaporimeter and first order compressor, between low temperature level condenser and evaporative condenser, between high temperature level condenser and high stage compressor, maintenance control valve is all installed.
And described adjusting water route is provided with maintenance control valve, and be connected with a controlled water route output pipe on the water route between maintenance control valve and low temperature level condenser.
Advantage of the present utility model and good effect are:
The utility model progressively heats up the cooling water in system, has reduced heat transfer temperature difference, and valve is installed between connecting line, be convenient to keep in repair respectively, be convenient to maintenance, and effectively submit the performance of Cascade type heat pump system to, make the heating efficiency of system be highly improved simultaneously.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing and by specific embodiment, the utility model is described in further detail, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of Two-stage Heat Pump System cooling device, comprise low temperature level condenser, evaporative condenser, evaporimeter, for the first time compressor, high temperature level condenser and compressor for the second time, wherein, evaporimeter, evaporative condenser and first order compressor are linked in sequence and form low temperature level closed circuit; High stage compressor, high temperature level condenser and evaporative condenser are linked in sequence and form high temperature level closed circuit, and on the pipeline between evaporative condenser and high temperature level condenser, an expansion valve are installed, and innovative point of the present utility model is:
One low temperature level condenser is installed between described evaporimeter and evaporative condenser, and this low-temperature condenser is also connected with a controlled water route intake line, and an expansion valve is installed on the pipeline between low temperature level condenser and evaporimeter.
Promote heat pump efficiency in order to improve heat utilization efficiency, between low temperature level condenser and high temperature level condenser, be directly connected with an adjusting water route, this adjusting water route is provided with maintenance control valve, and is connected with a controlled water route output pipe on the water route between maintenance control valve and low temperature level condenser.
For the ease of maintenance, on the pipeline on the pipeline on the pipeline between described evaporimeter and first order compressor, between low temperature level condenser and evaporative condenser, between high temperature level condenser and high stage compressor, maintenance control valve is all installed.
Operation principle of the present utility model is:
The WATER AS FLOW MEDIUM of low temperature side is through first order compressor, become high temperature and high pressure steam, by evaporative condenser condensation heat release, pass through again the heat release of low temperature level condenser, cooling water absorbs working medium liberated heat, when obtaining preheating, the heat of balance low temperature side, be condensed into saturated liquid state, through expansion valve adiabatic expansion, pressure decreased, form low mass dryness fraction steam, introduce evaporator evaporation, mass dryness fraction increases, and absorb flow through evaporimeter air-conditioner circulating water discharge heat, form the steam of high mass dryness fraction, introduce first order compressor and carry out adiabatic compression, working medium mass dryness fraction increases pressure and raises, temperature raises, form the steam of HTHP, complete the circulation of low temperature side,
High temperature side absorbs low temperature side liberated heat by evaporative condenser, is evaporated to the steam of high mass dryness fraction, through the second compressor compresses, form high temperature and high pressure steam, through the heat release of high temperature level condenser, now, cooling water after the preheating of high temperature level condenser with low temperature level condenser in Medium Exchange, temperature raises, be condensed into saturated liquid state, through expansion valve, pressure decreased forms low mass dryness fraction steam, enter again evaporative condenser, complete high temperature side circulation.
Although disclose for the purpose of illustration embodiment of the present utility model and accompanying drawing, but it will be appreciated by those skilled in the art that: not departing from the spirit and scope of the utility model and claims, various replacements, variation and amendment are all possible, therefore, scope of the present utility model is not limited to embodiment and the disclosed content of accompanying drawing.
Claims (3)
1. a Two-stage Heat Pump System cooling device, comprise low temperature level condenser, evaporative condenser, evaporimeter, for the first time compressor, high temperature level condenser and compressor for the second time, evaporimeter, evaporative condenser and first order compressor are linked in sequence and form low temperature level closed circuit; High stage compressor, high temperature level condenser and evaporative condenser are linked in sequence and form high temperature level closed circuit, and on the pipeline between evaporative condenser and high temperature level condenser, an expansion valve is installed, it is characterized in that: a low temperature level condenser is installed between described evaporimeter and evaporative condenser, this low-temperature condenser is also connected with a controlled water route intake line, and an expansion valve is installed on the pipeline between low temperature level condenser and evaporimeter; Between low temperature level condenser and high temperature level condenser, be directly connected with an adjusting water route.
2. Two-stage Heat Pump System cooling device according to claim 1, is characterized in that: on the pipeline on the pipeline on the pipeline between described evaporimeter and first order compressor, between low temperature level condenser and evaporative condenser, between high temperature level condenser and high stage compressor, maintenance control valve is all installed.
3. Two-stage Heat Pump System cooling device according to claim 1, is characterized in that: described adjusting water route is provided with maintenance control valve, and is connected with a controlled water route output pipe on the water route between maintenance control valve and low temperature level condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320646027.9U CN203629112U (en) | 2013-10-18 | 2013-10-18 | Cooling device for two-stage heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320646027.9U CN203629112U (en) | 2013-10-18 | 2013-10-18 | Cooling device for two-stage heat pump system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203629112U true CN203629112U (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320646027.9U Expired - Fee Related CN203629112U (en) | 2013-10-18 | 2013-10-18 | Cooling device for two-stage heat pump system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203629112U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906786A (en) * | 2017-12-25 | 2018-04-13 | 华北理工大学 | The coupled system of medically low temperature environment is produced based on double stage heat pump and autocascade cycle |
| CN113074466A (en) * | 2021-04-29 | 2021-07-06 | 山西山安蓝天节能科技股份有限公司 | Large-temperature-difference multistage compression pure heat pump system suitable for recovering waste heat of power plant |
-
2013
- 2013-10-18 CN CN201320646027.9U patent/CN203629112U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906786A (en) * | 2017-12-25 | 2018-04-13 | 华北理工大学 | The coupled system of medically low temperature environment is produced based on double stage heat pump and autocascade cycle |
| CN107906786B (en) * | 2017-12-25 | 2023-06-30 | 华北理工大学 | Coupling system for preparing medical low-temperature environment based on two-stage heat pump and cascade circulation |
| CN113074466A (en) * | 2021-04-29 | 2021-07-06 | 山西山安蓝天节能科技股份有限公司 | Large-temperature-difference multistage compression pure heat pump system suitable for recovering waste heat of power plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20161018 |