CN201829123U - Comprehensive simulation test device for fan coil refrigeration system - Google Patents

Comprehensive simulation test device for fan coil refrigeration system Download PDF

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Publication number
CN201829123U
CN201829123U CN2010205558399U CN201020555839U CN201829123U CN 201829123 U CN201829123 U CN 201829123U CN 2010205558399 U CN2010205558399 U CN 2010205558399U CN 201020555839 U CN201020555839 U CN 201020555839U CN 201829123 U CN201829123 U CN 201829123U
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China
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valve
outlet
inlet
pipeline
passage
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Expired - Fee Related
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CN2010205558399U
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Chinese (zh)
Inventor
刘忠宝
崔金菊
张克武
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Beijing University of Technology
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Beijing University of Technology
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Abstract

The utility model provides a comprehensive simulation test device for a fan coil refrigeration system, which is used for carrying out demonstration tests in the experimental teaching activities for students. The system comprises a compressor, a gas and liquid separator, a condenser and the like. An outlet of the compressor is communicated with an inlet of the condenser by a four-way reversing valve; an outlet of the condenser is communicated with an inlet of a second glass tube; an outlet of the second glass tube is communicated with a first check valve that is communicated with the inlet of a second drying filter; the outlet of the second drying filter is connected with the inlet of an evaporator by four shunted lines; the outlet of the evaporator is connected with a second sight glass; the outlet of the second sight glass is communicated with the inlet at the most left end of the four-way reversing valve; the outlet in the four-way reversing valve is communicated with the inlet of the gas and liquid separator; and the outlet of the gas and liquid separator is communicated with the inlet of the compressor. The comprehensive simulation test device can help the students to form concepts and obtain acknowledge and skills, and train the capability of the students for comprehensively analyzing problems and solving problems.

Description

Fan coil refrigeration system integrated simulation experiment device
Technical field
The utility model relates to fan coil refrigeration system integrated simulation experiment device, is mainly used in student's experimental teaching.
Background technology
The basic procedure of at present common fan coil refrigeration system as shown in Figure 1, the refrigerant gas of the High Temperature High Pressure that compressor 1 produces, the refrigerant gas of High Temperature High Pressure enters condenser 7 and is cooled to refrigerant liquid, cooled high-temperature high-pressure refrigerant liquid enters in first kapillary 10 by first retaining valve 9 through device for drying and filtering 11 and dams, the refrigerant liquid of low-temp low-pressure enters evaporator 18 after damming, absorb the heat in the evaporator 18, enter compressor 1 with the form evaporation of gas subsequently and compress.
Evaporator 18 is positioned at tank 19 the insides, and the water that water pump 21 extracts in the tank 19 enters in the fan coil 23 by flowmeter 22, discharges from fan coil again afterwards to enter in the tank 19.
Existing fan coil system all is to use shell seal, student to be difficult for getting information about its inner structure and principle of work, nor can realize the simulation under the various fault condition, is difficult for reaching the destination of study.
The utility model content
The purpose of this utility model is to overcome the deficiency that conventional fan coil system can not be simulated various operating modes, a kind of fan coil refrigeration system integrated simulation experiment device for the practical teaching use is provided, this device can carry out lecture experiment, helps the student to form notion, acquire knowledge and technical ability.
To achieve these goals, the utility model has been taked following technical scheme.This experimental provision comprises compressor 1, four-way change-over valve 2, gas-liquid separator 3, condenser 7, first glass tube 6, second glass tube 8, first retaining valve 9, second retaining valve 13, first kapillary 10, second kapillary 15, three capillary 16, first heating power expansion valve 20, second heating power expansion valve 14, first device for drying and filtering 11, second device for drying and filtering 12, evaporator 18, tank 19, water pump 21, flowmeter 22, fan coil 23, dual-pressure controller 24.Wherein:
Compressor 1 outlet is connected with the passage on the top of four-way change-over valve 2, the passage on four-way change-over valve top is connected with the passage of bottom low order end, the passage of the bottom low order end of four-way change-over valve 2 is connected with the inlet of condenser 7, the bottom low order end passage of four-way change-over valve 2 and the connecting pipeline of condenser 7 are provided with first and peep the liquid mirror 4 and first glass tube 6, the outlet of condenser 7 is successively by second glass tube 8, first retaining valve 9, second device for drying and filtering 12 is connected with four circuits parallel with one another, these four circuits parallel with one another are connected with an end of evaporator 18 again, the other end of evaporator 18 is peeped liquid mirror 25 by second and is connected with the passage of the bottom high order end of four-way change-over valve 2, second passage of the passage of four-way change-over valve bottom high order end and bottom left end is connected, left end second passage in described bottom is connected with the inlet of gas-liquid separator 3 again, and the outlet of gas-liquid separator 3 is connected with the inlet of compressor 1; Evaporator 18 is provided with first bulb 17 with the connecting pipeline of four-way change-over valve 2; Be in series with second heating power expansion valve 14 and a valve on article one pipeline in described four parallel lines, the outlet of second heating power expansion valve 14 is connected with second bulb 17; Be in series with second kapillary 15 and a valve on the second pipeline; Article three, be in series with a three capillary 16 and a valve on the pipeline, only be connected with valve on the 4th pipeline; The length of second kapillary 15 is longer than the length of three capillary 16 on the 3rd pipeline on the described second pipeline;
Evaporator 19 also is connected with the inlet of first device for drying and filtering 11 by second retaining valve 13, and the outlet of first device for drying and filtering 11 is connected with a port of condenser 7 by the circuit of two parallel connections; Be in series with first heating power expansion valve 20 and a valve on article one pipeline in described two parallel lines, be in series with first kapillary 10 and a valve on the second pipeline, the outlet that also is furnished with first bulb, 5, the first heating power expansion valves 20 on the connecting pipeline of condenser 7 and four-way change-over valve 2 is connected with first bulb 5;
The two ends of dual-pressure controller 20 are connected with the inlet of first device for drying and filtering 11 and second passage of four-way change-over valve bottom left end respectively.
The utility model is mainly used in student's experimental teaching, carries out lecture experiment, helps the student to form notion, acquire knowledge and technical ability, observation ability, self-learning ability, analysis-by-synthesis problem and the problem-solving ability of cultivating the student.
Description of drawings
Fig. 1 domestic refrigerator system flowchart
Fig. 2 refrigerator refrigeration system integrated simulation experiment device
Among the figure: 1. compressor, 2, four-way change-over valve, 3, gas-liquid separator, 4, first peep the liquid mirror, 5, first bulb, 6, first glass tube, 7, condenser, 8, second glass tube, 9, first retaining valve, 10, first kapillary, 11, device for drying and filtering, 12, second device for drying and filtering, 13, second retaining valve, 14, second heating power expansion valve, 15, second kapillary, 16, three capillary, 17, second bulb, 18, evaporator, 19, tank, 20, first heating power expansion valve, 21, water pump, 22, flowmeter, 23 fan coils, 24, dual-pressure controller.
Embodiment
The utility model is described in further detail below in conjunction with Fig. 2:
As shown in Figure 2, native system comprises that compressor 1, four-way change-over valve 2, gas-liquid separator 3, first peep liquid mirror 4, second and peep liquid mirror 25, first bulb 5, second bulb 17, condenser 7, first glass tube 6, second glass tube 8, first retaining valve 9, second retaining valve 13, first kapillary 10, second kapillary 15, three capillary 16, first heating power expansion valve 20, second heating power expansion valve 14, first device for drying and filtering 11, second device for drying and filtering 12, evaporator 18, tank 19, water pump 21, flowmeter 22, fan coil 23, dual-pressure controller 24.Wherein, the refrigerant gas that compressor 1 produces High Temperature High Pressure is connected with the uppermost passage of four-way change-over valve 2, the uppermost passage of four-way change-over valve is connected with the passage of the rearmost end of its underpart, the passage of the bottom low order end of four-way change-over valve 2 is connected with the inlet of condenser 7, this connecting pipeline is provided with first and peeps the liquid mirror 4 and first glass tube 6, by first water cut of peeping cold-producing medium in liquid mirror 4 observing systems, observe the refrigerant gas flow state by first glass tube 6.The refrigerant liquid condensation becomes liquid in condenser 7, the outlet of condenser 7 is connected with the inlet of second glass tube 8, flow state by the condensed refrigerant gas of second glass tube, 8 observations, the outlet of second glass tube 8 and first retaining valve 9 link, first retaining valve 9 is connected with the inlet of second device for drying and filtering 12, by the moisture in the 12 absorption refrigeration agent of second device for drying and filtering and remove impurity, the outlet of second device for drying and filtering 12 is connected with the inlet of evaporator 18 by the circuit of four parallel connections, simulate heating power expansion valve (normal model is regulated to ensure normal discharge/degree of superheat) respectively by the circuit of four parallel connections, kapillary is long, too short and the four kinds of situations of system congestion of kapillary, the outlet of evaporator 18 and second is peeped liquid mirror 25 and is connected, by second water cut of peeping cold-producing medium in liquid mirror 25 observing systems, second outlet of peeping liquid mirror 25 is connected with the inlet of the bottom high order end of four-way change-over valve 2, first passage on the left side, bottom is connected with the second channel on the left side, bottom, the outlet of second passage on the left side, four-way change-over valve 2 bottom is connected with the inlet of gas-liquid separator 3, the cold-producing medium that gas-liquid separator 3 makes the gas-liquid separation assurance enter compressor is a gas, the outlet of gas-liquid separator 3 is connected with the inlet of compressor 1, thereby finishes circulation.
Be in series with second heating power expansion valve 14 and a valve on article one pipeline in described four parallel lines, be in series with second kapillary 15 and a valve on the second pipeline, article three, be in series with a three capillary 16 and a valve on the pipeline, only be connected with valve on the 4th pipeline.The length of second kapillary 15 on the second pipeline is longer than the length of the three capillary 16 on the 3rd pipeline.The outlet that the export pipeline of evaporator 18 is provided with second bulb, 17, the second heating power expansion valves 14 is connected with second bulb 17.
Evaporator 19 also is connected with the inlet of first device for drying and filtering 11 by second retaining valve 13, and the outlet of first device for drying and filtering 11 is connected with a port of condenser 7 by the circuit of two parallel connections; Be in series with first heating power expansion valve 20 and a valve on article one pipeline in described two parallel lines, be in series with first kapillary 10 and a valve on the second pipeline, the outlet that also is furnished with first bulb, 5, the first heating power expansion valves 20 on the connecting pipeline of condenser 7 and four-way change-over valve 2 is connected with first bulb 5;
The two ends of dual-pressure controller 20 are connected with the inlet of first device for drying and filtering 11 and second passage of four-way change-over valve bottom left end respectively.
When needing defrost with the valve open in device for drying and filtering left side
The refrigerant gas that compressor 1 produces High Temperature High Pressure is connected with the top of four-way change-over valve 2, the top of four-way change-over valve 2 is connected with its high order end, the high order end of four-way change-over valve 2 and second is peeped liquid mirror 25 and is connected, by second water cut of peeping cold-producing medium in liquid mirror 25 observing systems, second peeps liquid mirror 25 is connected with the inlet of evaporator 18, by evaporator refrigerant gas is condensed into refrigerant liquid, the outlet of evaporator 18 is connected with second retaining valve 13, thereby make 13 conductings of second retaining valve, second retaining valve 13 is connected with the inlet of first device for drying and filtering 11, by the moisture in the 11 absorption refrigeration agent of first device for drying and filtering and remove the outlet of impurity first device for drying and filtering and be connected with the inlet of condenser 7 with circuit by two parallel connections, heat in the absorptive condenser, thereby realization defrost, the outlet of condenser 7 is connected with the inlet of first glass tube 6, by first glass tube observe refrigerant gas flow state, the outlet of first glass tube 6 and first is peeped liquid mirror 4 and is connected, by peeping the water cut of cold-producing medium in the liquid sem observation system, peeping liquid mirror 4 is connected with the inlet of four-way change-over valve 2 low order ends, realize that two pipelines of low order end are connected, the central exit of four-way change-over valve 2 is connected with the inlet of gas-liquid separator 3, the cold-producing medium that realization gas-liquid separation assurance enters compressor is a gas, the outlet of gas-liquid separator 3 is connected with the inlet of compressor 1, thereby finishes circulation.
In the utility model, system pipeline adopts special-purpose refrigeration soft pipeline to connect, and reduces pad, thereby improves the reliability of system.Refrigerating capacity is for being not less than 100W, and dual-evaporator system, cold house's volume are not less than 0.2 cubic metre, and outer wall is the thick color steel of 50mm, and heat transfer coefficient is about 0.37W/m 2K.Condenser 7 is provided with state and the flow of transparent glass tube observation panel with the cold-producing medium in the observing system, evaporator 18 (0 degree) adopts 4 kinds of throttle styles in parallel: heating power expansion valve (normal model is regulated to ensure normal discharge/degree of superheat), kapillary 15 is (long, demonstrate it and do not have a flow regulating function), kapillary 16 is (too short, demonstrate it and do not have a flow regulating function), valve (demo system obstruction).The height measurement mechanism is set in the system, and temperature sensor can be measured evaporating temperature/pressure, and condensing temperature/pressure is air-breathing/delivery temperature/pressure, the degree of superheat, and refrigerant flow, all parameters show at panel board.System adopts speed-changing draught fan to change the protection of evaporation/condensation pressure initiating system high-low pressure.Can simulate evaporator expands stifled.Can simulate the evaporator deficiency in draught.Can analog filters dirty stifled.Can the segment of analog compression machine high pressure, low pressure is cut off (with the needle-valve that dams).Can the too high protection of simulated exhaust temperature.Can simulate cold-producing medium dash to annotate not enough/dash annotate excessive.Simulation heating power expansion valve ice is stifled.

Claims (1)

1. a fan coil refrigeration system integrated simulation experiment device is characterized in that: comprise pressure
Machine (1) contracts, four-way change-over valve (2), gas-liquid separator (3), condenser (7), first glass tube (6), second glass tube (8), first retaining valve (9), second retaining valve (13), first kapillary (10), second kapillary (15), three capillary (16), first heating power expansion valve (20), second heating power expansion valve (14), first device for drying and filtering (11), second device for drying and filtering (12), evaporator (18), tank (19), water pump (21), flowmeter (22), fan coil (23), dual-pressure controller (24); Wherein:
Compressor (1) outlet is connected with the passage on the top of four-way change-over valve (2), the passage on four-way change-over valve top is connected with the passage of bottom low order end, the passage of the bottom low order end of four-way change-over valve (2) is connected with the inlet of condenser (7), the bottom low order end passage of four-way change-over valve (2) and the connecting pipeline of condenser (7) are provided with first and peep liquid mirror (4) and first glass tube (6), the outlet of condenser (7) is successively by second glass tube (8), first retaining valve (9), second device for drying and filtering (12) is connected with four circuits parallel with one another, these four circuits parallel with one another are connected with an end of evaporator (18) again, the other end of evaporator (18) is peeped liquid mirror (25) by second and is connected with the passage of the bottom high order end of four-way change-over valve (2), second passage of the passage of four-way change-over valve bottom high order end and bottom left end is connected, left end second passage in described bottom is connected with the inlet of gas-liquid separator (3) again, and the outlet of gas-liquid separator (3) is connected with the inlet of compressor (1); Evaporator (18) is provided with first bulb (17) with the connecting pipeline of four-way change-over valve (2);
Be in series with second heating power expansion valve (14) and a valve on article one pipeline in described four parallel lines, the outlet of second heating power expansion valve (14) is connected with second bulb (17); Be in series with second kapillary (15) and a valve on the second pipeline; Article three, be in series with a three capillary (16) and a valve on the pipeline, only be connected with valve on the 4th pipeline; The length of second kapillary (15) is longer than the length of three capillary (16) on the 3rd pipeline on the described second pipeline;
Evaporator (19) also is connected by the inlet of second retaining valve (13) with first device for drying and filtering (11), and the outlet of first device for drying and filtering (11) is connected with a port of condenser (7) by the circuit of two parallel connections; Be in series with first heating power expansion valve (20) and a valve on article one pipeline in described two parallel lines, be in series with first kapillary (10) and a valve on the second pipeline, also be furnished with first bulb (5) on the connecting pipeline of condenser (7) and four-way change-over valve (2), the outlet of first heating power expansion valve (20) is connected with first bulb (5);
The two ends of dual-pressure controller (20) are connected with the inlet of first device for drying and filtering (11) and second passage of four-way change-over valve bottom left end respectively.
CN2010205558399U 2010-09-30 2010-09-30 Comprehensive simulation test device for fan coil refrigeration system Expired - Fee Related CN201829123U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010205558399U CN201829123U (en) 2010-09-30 2010-09-30 Comprehensive simulation test device for fan coil refrigeration system

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Application Number Priority Date Filing Date Title
CN2010205558399U CN201829123U (en) 2010-09-30 2010-09-30 Comprehensive simulation test device for fan coil refrigeration system

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CN201829123U true CN201829123U (en) 2011-05-11

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CN2010205558399U Expired - Fee Related CN201829123U (en) 2010-09-30 2010-09-30 Comprehensive simulation test device for fan coil refrigeration system

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105090080A (en) * 2014-05-16 2015-11-25 北京光徽德润航空技术有限公司 Multi-environment draught fan performance test bench
CN106057057A (en) * 2016-07-14 2016-10-26 天津商业大学 Refrigeration system multifunctional modularized base teaching decomposition experiment platform

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105090080A (en) * 2014-05-16 2015-11-25 北京光徽德润航空技术有限公司 Multi-environment draught fan performance test bench
CN106057057A (en) * 2016-07-14 2016-10-26 天津商业大学 Refrigeration system multifunctional modularized base teaching decomposition experiment platform
CN106057057B (en) * 2016-07-14 2019-03-08 天津商业大学 Refrigeration system multifunctional modular elementary teaching decomposition experiment platform

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110511

Termination date: 20120930