CN202993636U - Screw type total heat recovery heat pump unit with gravity self-circulation oil cooler - Google Patents
Screw type total heat recovery heat pump unit with gravity self-circulation oil cooler Download PDFInfo
- Publication number
- CN202993636U CN202993636U CN 201220687048 CN201220687048U CN202993636U CN 202993636 U CN202993636 U CN 202993636U CN 201220687048 CN201220687048 CN 201220687048 CN 201220687048 U CN201220687048 U CN 201220687048U CN 202993636 U CN202993636 U CN 202993636U
- Authority
- CN
- China
- Prior art keywords
- oil cooler
- unit
- condenser
- screw
- pump unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
Abstract
The utility model belongs to the technical field of refrigeration machinery, discloses a screw type total heat recovery heat pump unit with a gravity self-circulation oil cooler, and aims to solve the problem that the existing screw type total heat recovery water (ground) source heat pump unit leads to decrease of the energy efficiency ratio of the unit when performing liquid injection cooling on both the motor room and the compression room of the screw type compressor during heating or heat recovery operations. The screw type total heat recovery heat pump unit includes an evaporator, a screw compressor, an oil separator, a total heat recovery condenser and a throttling device that are all connected to a refrigerant circulation circuit; a hot water inlet/outlet and a cold water inlet/outlet are arranged on the condenser; the gravity self-circulation oil cooler is connected between the screw compressor and the condenser; and the oil cooler, an electromagnetic valve and a temperature sensor together form an oil cooling circuit. Due to cooling by the gravity self-circulation liquid refrigerant, the overhigh temperature of the motor and the lubricating oil of the unit can be efficiently lowered and the operation efficiency of the unit is remarkably improved on the premise that the refrigerating capability and the power of the unit are not affected.
Description
Technical field
The utility model belongs to the refrigerating machine technical field, relate to the full heat recovery water of a kind of screw () the source source pump, be more specifically the full heat-recovery heat pump unit of a kind of screw with natural circulation formula oil cooler.
Background technology
" efficient, energy-saving and environmental protection " are the mainstream development directions of refrigerating and air conditioning industry, and air-conditioner host is as the nucleus equipment of central air conditioner system, and its running efficiency and reliability directly have influence on energy consumption and the operating cost of whole air-conditioning system.The ratio that current China building energy consumption accounts for whole society's total energy consumption is up to 30%, and air-conditioning system accounts for 50%～60% of whole building energy consumption, and 76% left and right of the energy consumption duty adjusting system of air-conditioner host.Therefore, the energy consumption of reduction air-conditioner host is great to China's energy-saving and emission-reduction policy significance.The full heat recovery water of screw () the source source pump is compared with traditional water-cooled handpiece Water Chilling Units has three advantages: the one, full heat recovery water () the source source pump can satisfy refrigeration demand summer, can satisfy the demand of heating winter, so range of application is wider than single cold water unit; The 2nd, full heat recovery water () the source source pump utilizes underground water and the relatively stable and suitable characteristics of the soil moisture, when refrigeration and heating mode operation, unit all is in comparatively desirable condensation and evaporates working condition, therefore unit operation efficiency is higher; The 3rd, full heat recovery water () source source pump recyclable whole condensation waste heat in refrigeration, provide free hot water.With traditional water () the source source pump compares, full heat recovery water () the source source pump can provide free hot water in refrigeration, saved the input of client to heating equipment, more meets the long-term energy policy of country.
The full heat recovery water of screw () the source source pump heats or recuperation of heat when operation, condensation temperature when condensation temperature is freezed far above unit, cause the screw compressor motor to be in for a long time the high loaded process state, thereby unit delivery temperature and motor temperature are raise.For protection screw compressor motor is not burned, must reduce the temperature of motor cavity.Usually solution is to carry out Liquid injection cooling to screw compressor suction side and discharge chambe.During to the suction side Liquid injection cooling, liquid refrigerant is vaporized into gas and sucks discharge chambe after cooling to motor, the effective capacity of screw compressor will descend, and during to the discharge chambe hydrojet, the liquid cooling matchmaker is absorbed heat, and evaporation is rear to be continued compressed at compression chamber, the screw compressor power consumption will increase, these two kinds of hydrojet modes all can cause the decline of unit performance, and namely to improve to sacrifice unit performance be cost to unit reliability.
The utility model content
The technical assignment of the technical problems to be solved in the utility model and proposition be overcome the existing full heat recovery water of screw () the source source pump heats or screw compressor motor room and discharge chambe carried out the defective that unit eer that Liquid injection cooling causes descends during the recuperation of heat operation, provides a kind of screw with natural circulation formula oil cooler full heat-recovery heat pump unit.
For achieving the above object, the full heat-recovery heat pump unit of screw with natural circulation formula oil cooler of the present utility model, comprise the evaporimeter, screw compressor, oil eliminator, the condenser of the full recuperation of heat of band, the throttling arrangement that are connected in refrigerant circulation loop, establish hot water entrance, cooling water outlet and inlet on described condenser, it is characterized in that: be connected a natural circulation formula oil cooler between described screw compressor and condenser.
As the optimization technique means, described oil cooler and a magnetic valve, a temperature sensor form an oil cooling loop, described magnetic valve is between described condenser and oil cooler, and described temperature sensor is between described screw compressor and oil cooler.
As the optimization technique means, this unit is single compressor cooling cycle system or Multi-compressor parallel cooling cycle system or the multi-compressor unit that is comprised of a plurality of independent coolings loops.
As the optimization technique means, the position of described oil cooler is lower than the position of condenser.
The beneficial effects of the utility model are: by being connected a natural circulation formula oil cooler between screw compressor and condenser, utilize the cooling of natural circulation liquid refrigerant, under the prerequisite that does not affect unit refrigerating capacity and power, can effectively reduce the too high motor temperature of unit and lubricating oil temperature, unit operation efficiency obviously improves.
Description of drawings
Fig. 1 is the simple schematic diagram of refrigerating of the full heat-recovery heat pump unit of screw with natural circulation formula oil cooler of the present utility model;
Fig. 2 is that oil cooling loop of the present utility model consists of schematic diagram;
Number in the figure explanation: 1-evaporimeter, 2-screw compressor, 3-oil eliminator, 4-be with the condenser of full recuperation of heat, the 5-throttling arrangement, and the 6-oil cooler, the 7-magnetic valve, the 8-temperature sensor, the 9-hot water entrance, the 10-cooling water outlet and inlet, the 11-chilled water is taken over.
The specific embodiment
Below in conjunction with Figure of description, the utility model is described further.
The full heat-recovery heat pump unit of screw with natural circulation formula oil cooler of the present utility model, as shown in Figure 1, it comprises evaporimeter 1, screw compressor 2, oil eliminator 3, the condenser 4 with full recuperation of heat, the throttling arrangement 5 that is connected in refrigerant circulation loop, establish hot water entrance 9, cooling water outlet and inlet 10 on condenser 4, the structure of above-mentioned unit and the water of prior art () the source source pump is similar, therefore no longer launch to describe, be connected a natural circulation formula oil cooler 6 between screw compressor and condenser.
Concrete: oil cooler 6 and a magnetic valve 7, a temperature sensor 8 form an oil cooling loop, and magnetic valve 7 is between condenser 4 and oil cooler 6, and temperature sensor 8 is between screw compressor 2 and oil cooler 6.This unit is single compressor cooling cycle system or Multi-compressor parallel cooling cycle system or the multi-compressor unit that is comprised of a plurality of independent coolings loops.The position of oil cooler is lower than the position of condenser.
As shown in Figure 2: oil cooler 6, magnetic valve 7, oil cooling loop of temperature sensor 8 common compositions, the oil cooler position should be lower than condenser, and when unit was opened, oil cooling loop was moved automatically, effectively reduce too high motor temperature and the lubricating oil temperature of unit, guarantee that unit normally moves.
The full heat recovery water of screw with the natural circulation oil cooler of the present utility model () source source pump characteristics be with traditional water () liquid of source source pump spray cooling device changes oil cooling loop into.During the unit heating operation, draw the excessively cold liquid refrigerant of a part and enter oil cooling loop 6 from condenser, the temperature of temperature sensor 9 sensing screw compressor oil-outs, if the temperature that senses is lower than setting value, magnetic valve 8 cuts out, and the refrigeration oil in screw compressor directly is back to the screw compressor oil return opening through oil cooler (this moment refrigeration oil not with liquid refrigerant heat exchange); If the temperature that senses is higher than setting value, magnetic valve 8 is opened, from condenser liquid refrigerant process oil cooler out, carry out heat exchange with refrigeration oil, after the heat of liquid refrigerant absorption high temperature refrigeration oil, gasification is gas, get back to condenser overhead and again carry out condensation, the refrigeration oil temperature sprays into the screw compressor compression chamber after descending, so iterative cycles.Thereby reach the reduction delivery temperature, the purpose of protection screw compressor motor.The driving force of oil cooler cold-producing medium is oil cooler import liquid refrigerant and the poor caused gravitational difference of exit gas refrigerant density.Adopt this mode, namely can not reduce heating capacity by unit, also can not increase the unit power consumption, unit efficiency obviously improves.
Claims (4)
1. full heat-recovery heat pump unit of the screw with natural circulation formula oil cooler, comprise the evaporimeter (1), screw compressor (2), oil eliminator (3), the condenser (4) with full recuperation of heat, the throttling arrangement (5) that are connected in refrigerant circulation loop, establish hot water entrance (9), cooling water outlet and inlet (10) on described condenser (4), it is characterized in that: be connected a natural circulation formula oil cooler (6) between described screw compressor and condenser.
2. the full heat-recovery heat pump unit of the screw with natural circulation formula oil cooler according to claim 1, it is characterized in that: described oil cooler (6) forms an oil cooling loop with a magnetic valve (7), a temperature sensor (8), described magnetic valve (7) is between described condenser (4) and oil cooler (6), and described temperature sensor (8) is between described screw compressor (2) and oil cooler (6).
3. the full heat-recovery heat pump unit of the screw with natural circulation formula oil cooler according to claim 1 is characterized in that: this unit is single compressor cooling cycle system or Multi-compressor parallel cooling cycle system or the multi-compressor unit that is comprised of a plurality of independent coolings loops.
4. the full heat-recovery heat pump unit of the screw with natural circulation formula oil cooler according to claim 1, it is characterized in that: the position of described oil cooler is lower than the position of condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220687048 CN202993636U (en) | 2012-12-11 | 2012-12-11 | Screw type total heat recovery heat pump unit with gravity self-circulation oil cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220687048 CN202993636U (en) | 2012-12-11 | 2012-12-11 | Screw type total heat recovery heat pump unit with gravity self-circulation oil cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202993636U true CN202993636U (en) | 2013-06-12 |
Family
ID=48564810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220687048 Expired - Lifetime CN202993636U (en) | 2012-12-11 | 2012-12-11 | Screw type total heat recovery heat pump unit with gravity self-circulation oil cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202993636U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105683685A (en) * | 2013-10-31 | 2016-06-15 | 艾默生环境优化技术有限公司 | Heat pump system |
-
2012
- 2012-12-11 CN CN 201220687048 patent/CN202993636U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105683685A (en) * | 2013-10-31 | 2016-06-15 | 艾默生环境优化技术有限公司 | Heat pump system |
| US10156384B2 (en) | 2013-10-31 | 2018-12-18 | Emerson Climate Technologies, Inc. | Heat pump system |
| CN105683685B (en) * | 2013-10-31 | 2019-01-01 | 艾默生环境优化技术有限公司 | heat pump system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204757216U (en) | Two cold source computer lab air conditioning system | |
| CN102798184B (en) | A kind of heat pipe hot pump hybrid system | |
| CN101608817A (en) | A kind of energy-saving air conditioner of indirect utilization outdoor cold source | |
| CN201733563U (en) | Air-conditioner system suitable for cabinets | |
| CN201407781Y (en) | Central air-conditioning waste heat recovery system utilizing dual-conversion thermostatic control technology | |
| CN102759159B (en) | A kind of heat pipe hot pump composite system | |
| CN201449078U (en) | Air conditioning system applicable to communication base station | |
| CN201448939U (en) | Energy-saving air conditioner indirectly utilizing outdoor cold source | |
| CN202928185U (en) | A screw air cooled heat pump unit provided with a gravity self-circulation oil cooler | |
| CN112146301B (en) | Evaporative cold screw cold and hot water unit with total heat recovery | |
| CN202928184U (en) | A screw water chilling unit with a gravity self-circulation oil cooler | |
| CN203671820U (en) | Air source integrated central air conditioner | |
| CN203478687U (en) | Refrigeration system | |
| CN102829519B (en) | Dehumidifying unit of double cold source all fresh air heat pump provided with cold carrying heat exchanger | |
| CN202304102U (en) | Air-speed-adjustable ultra-low-temperature air source heat pump | |
| CN101975494B (en) | Air-cooled energy-saving type motor room air conditioning system | |
| CN202993635U (en) | Heat pump unit with gravity self-circulation oil cooler | |
| CN204574584U (en) | A kind of novel energy-saving cooling by wind with pressure maintenance device | |
| CN202993636U (en) | Screw type total heat recovery heat pump unit with gravity self-circulation oil cooler | |
| CN204128233U (en) | Environment-friendly and energy-efficient freezer unit | |
| CN203501363U (en) | Double-effect heat pump air conditioning unit | |
| CN203216165U (en) | Supercooling device applied to natural cold source magnetic levitation refrigerating system | |
| CN116358076A (en) | Concurrent zigzag heat collecting evaporator solar-air energy cooling device and concurrent zigzag heat collecting evaporator solar-air energy cooling method | |
| CN203980701U (en) | A kind of superposing type air-source heating plant | |
| CN102353097A (en) | Air conditioner for machine room |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG KING AIR CONDITIONER CO., LTD. Free format text: FORMER NAME: ZHEJIANG KING AIR CONDITIONING EQUIPMENT CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 312300 Zhejiang city of Shaoxing province Shangyu city street high road No. 18 Patentee after: ZHEJIANG KING AIR CONDITIONER CO.,LTD. Address before: 312300 Hongxing Village, Shangyu Economic Development Zone (Cao E street, Shaoxing, Zhejiang) Patentee before: ZHEJIANG KING AIR CONDITIONING EQUIPMENT Co.,Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 312300 Zhejiang city of Shaoxing province Shangyu city street high road No. 18 Patentee after: ZHEJIANG KING Co.,Ltd. Address before: 312300 Zhejiang city of Shaoxing province Shangyu city street high road No. 18 Patentee before: ZHEJIANG KING AIR CONDITIONER CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |