CN203286802U - Air source screw type heat pump unit - Google Patents
Air source screw type heat pump unit Download PDFInfo
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- CN203286802U CN203286802U CN2013202666357U CN201320266635U CN203286802U CN 203286802 U CN203286802 U CN 203286802U CN 2013202666357 U CN2013202666357 U CN 2013202666357U CN 201320266635 U CN201320266635 U CN 201320266635U CN 203286802 U CN203286802 U CN 203286802U
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Abstract
The utility model discloses an air source screw type heat pump unit. The air source screw type heat pump unit is characterized by comprising a screw refrigerating compressor unit, a condenser, a throttle valve and an evaporator, and the screw refrigerating compressor unit, the condenser, the throttle valve and the evaporator are connected together through a pipeline and are sealed; the screw refrigerating compressor unit is composed of a screw refrigerating compressor oil path system, an air path system and a working station beside a machine, and the screw refrigerating compressor oil path system, the air path system and the working station beside the machine are arranged on the same rack. Environmentally-friendly cold medium R134a is used as refrigerating agent by the screw refrigerating compressor unit, so that the whole air source screw type heat pump unit accords with the national environment-protecting requirement.
Description
Technical field
The utility model relates to a kind of based on the air-source screw rod type heat pump machine unit.
Background technology
The R22 refrigerant has certain destructiveness to atmospheric ozone layer, European Union and most of developed country just banned use of the equipment that has comprised the R22 cold-producing medium in 2015, China also requires to phase down the use amount of R22 cold-producing medium, before 2013, China will stop batch newly-built cold-producing medium R22 project, production and the use that will contain the R22 refrigerant on January 1st, 2013 are frozen in two yearly mean levels in 2009 to 2010, freezing on level to cut down 10% again in 2015, the year two thousand thirty is realized fully superseded except maintenance and specific use.
The utility model content
The technical problem that the utility model mainly solves is to provide a kind of air-source screw rod type heat pump machine unit, and above-mentioned air-source screw rod type heat pump machine unit does not re-use the R22 refrigerant as cold-producing medium.
A kind of air-source screw rod type heat pump machine unit, comprise screw refrigeration compressor unit, condenser, choke valve and evaporimeter, and described screw refrigeration compressor unit, condenser, choke valve and evaporimeter link together by pipeline and seal; Described screw type refrigerating compressor group is comprised of the other operating desk of Spiral Lobe Refrigeration Compressor oil piping system, air-channel system and machine, and the other operating desk of described Spiral Lobe Refrigeration Compressor oil piping system, air-channel system and machine is contained in above same frame.
Further, described Spiral Lobe Refrigeration Compressor oil piping system comprises oil eliminator, oil cooler, oil pump, oily coarse filter, olein filter, oil pressure adjusting valve and oil circuit.
Further, described air-channel system comprises suction filter, suction line valve, air-breathing check-valves, venting check valve, discharge line valve.
Further, a pair of rotor is housed in described screw refrigeration compressor unit, wherein main rotor is four teeth, driven rotor is six teeth, and two rotors are encased in body, by main rotor, drives from rotor intermeshing and rotate, the air entry of offering on body and exhaust outlet position, become diagonal.
Screw type refrigerating compressor group described above adopts environmental protection refrigerant R134a as cold-producing medium, therefore makes whole air-source screw rod type heat pump machine unit meet national requirements for environmental protection.
Description of drawings
Fig. 1 is the schematic diagram of the preferred embodiments of the utility model air-source screw rod type heat pump machine unit.
Fig. 2 is the refrigeration process flow chart of Fig. 1 hollow source of the gas screw rod type heat pump machine unit.
The specific embodiment
Below in conjunction with drawings and embodiments, the utility model air-source screw rod type heat pump machine unit is elaborated:
Please refer to shown in Figure 1ly, the utility model air-source screw rod type heat pump machine unit mainly is comprised of screw refrigeration compressor unit 1, condenser 2, choke valve 3 and 6 four essential parts of evaporimeter, and by pipeline, links together and form the refrigeration system of a sealing.Wherein screw type refrigerating compressor group 1 is comprised of the other operating desk of Spiral Lobe Refrigeration Compressor oil piping system, air-channel system and machine.Concrete, described Spiral Lobe Refrigeration Compressor oil piping system comprises oil eliminator, oil cooler, oil pump, oily coarse filter, olein filter, oil pressure adjusting valve and oil circuit, and described air-channel system comprises suction filter, suction line valve, air-breathing check-valves, venting check valve, discharge line valve.In present embodiment, the other operating desk of described Spiral Lobe Refrigeration Compressor oil piping system, air-channel system and machine is contained in above same frame to form described screw type refrigerating compressor group 1.In the utility model, described screw type refrigerating compressor group 1 adopts environmental protection refrigerant R134a as cold-producing medium.
Please refer to Fig. 2, the refrigeration process flow process of above-mentioned air-source screw rod type heat pump machine unit as shown in Figure 2, is comprised of air-breathing, compression, three processes of exhaust.Wherein in Fig. 2, label 12 is oily dispense station, and label 13 is fine filter, and label 14 is the resistance filter, and label 15 is oil pump, and label 16 is oil pressure adjusting valve.
In described screw refrigeration compressor unit 1, a pair of rotor is housed, wherein main rotor is four teeth, and driven rotor is six teeth, two rotors are encased in body, driven from rotor intermeshingly and rotate by main rotor, the air entry of offering on body and exhaust outlet position, become diagonal.When rotor rotated, a pair of intermeshing groove communicated, and rotor enters suction condition, air-breathing completing, and teeth groove enters closed state.When rotor is rotated further, a pair of intermeshing teeth groove volume reduces gradually, pressure is raise formed compression process, when the teeth groove of compressor communicated with exhaust outlet, compressor starts entered exhaust condition until exhaust is completed, like this reciprocation cycle, that Spiral Lobe Refrigeration Compressor has been completed is air-breathing, compression, exhaust work process, to obtain low grade heat energy from natural air, through the electric power acting, providing can be used by people.
During concrete production, from the modeling of starting with of the efficiency of screw type refrigerating compressor group 1, adopt indicated efficiency, mechanical efficiency, electric efficiency and four indexs of gas transmission coefficient, the actual performance of screw type refrigerating compressor group 1 is described, can draws the parameters such as screw type refrigerating compressor group 1 electrical power, mass flow, bulk coefficient, pressure coefficient, temperature coefficient, leadage coefficient according to these indexs.Afterwards, condenser 2 is adopted three section models, be divided into overheated zone, two-phase section and cross three of cold-zones section Modeling Calculation respectively.In two-phase section, adopt distributed parameter model, when modeling, in order to make the equation group sealing, can separate, on the basis of quality, momentum and energy three large laws of conservation, introduced relevant with it slip ratio relation equation.Pass criteria is counted the size of Fr, We and is differentiated flow pattern, and it is set up respectively corresponding model, helps to improve the accuracy of calculating.Then, with step-by-step method, set up capillary model, mobile depending on capillary in pipe is that one dimension flows, and do not consider the heat conduction of capillary streamwise, and cold-producing medium is that adiabatic expansion is mobile in capillary, and mixes, and does not consider alternate slip.Understand its internal flow state on the Mathematical Modeling basis of having set up.By the flow equilibrium analysis between screw type refrigerating compressor group 1 in capillary and system, obtain refrigerating capacity, input power and coefficient of performance correlation with refrigeration system, grasp obtains operating characteristic capillaceous, is conducive to coupling design and the efficient operation of whole refrigeration system.Consider that outdoor heat exchanger surface frosting causes influencing each other of air quantity decline and frosting process and refrigeration system loop parameter, the frosting of outdoor heat exchanger is considered as accurate dynamic process, set up the dynamic distributed parameter model of refrigeration system, with finite difference calculus, Mathematical Modeling is carried out numerical computations, draw dynamic characteristic and the frost layer dynamic growth rule on outdoor heat exchanger of heat pump air conditioner under various frozen conditions.
These are only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present utility model.
Claims (4)
1. air-source screw rod type heat pump machine unit, it is characterized in that: described air-source screw rod type heat pump machine unit comprises screw refrigeration compressor unit, condenser, choke valve and evaporimeter, and described screw refrigeration compressor unit, condenser, choke valve and evaporimeter link together by pipeline and seal; Described screw type refrigerating compressor group is comprised of the other operating desk of Spiral Lobe Refrigeration Compressor oil piping system, air-channel system and machine, and the other operating desk of described Spiral Lobe Refrigeration Compressor oil piping system, air-channel system and machine is contained in above same frame.
2. air-source screw rod type heat pump machine unit as claimed in claim 1, it is characterized in that: described Spiral Lobe Refrigeration Compressor oil piping system comprises oil eliminator, oil cooler, oil pump, oily coarse filter, olein filter, oil pressure adjusting valve and oil circuit.
3. air-source screw rod type heat pump machine unit as claimed in claim 1, it is characterized in that: described air-channel system comprises suction filter, suction line valve, air-breathing check-valves, venting check valve, discharge line valve.
4. air-source screw rod type heat pump machine unit as claimed in claim 1, it is characterized in that: a pair of rotor is housed in described screw refrigeration compressor unit, wherein main rotor is four teeth, driven rotor is six teeth, two rotors are encased in body, driven from rotor intermeshingly and rotate by main rotor, the air entry of offering on body and exhaust outlet position, become diagonal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202666357U CN203286802U (en) | 2013-05-15 | 2013-05-15 | Air source screw type heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202666357U CN203286802U (en) | 2013-05-15 | 2013-05-15 | Air source screw type heat pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203286802U true CN203286802U (en) | 2013-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202666357U Expired - Fee Related CN203286802U (en) | 2013-05-15 | 2013-05-15 | Air source screw type heat pump unit |
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| CN (1) | CN203286802U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113587363A (en) * | 2021-08-04 | 2021-11-02 | 广东美的暖通设备有限公司 | Compressor fault detection method and device, computing equipment and storage medium |
-
2013
- 2013-05-15 CN CN2013202666357U patent/CN203286802U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113587363A (en) * | 2021-08-04 | 2021-11-02 | 广东美的暖通设备有限公司 | Compressor fault detection method and device, computing equipment and storage medium |
| CN113587363B (en) * | 2021-08-04 | 2022-07-26 | 广东美的暖通设备有限公司 | Compressor fault detection method and device, computing equipment and storage medium |
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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 |
Granted publication date: 20131113 Termination date: 20160515 |
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| CF01 | Termination of patent right due to non-payment of annual fee |