CN209165821U - Carbon dioxide refrigerating machine total heat recovery system - Google Patents

Carbon dioxide refrigerating machine total heat recovery system Download PDF

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Publication number
CN209165821U
CN209165821U CN201822087480.6U CN201822087480U CN209165821U CN 209165821 U CN209165821 U CN 209165821U CN 201822087480 U CN201822087480 U CN 201822087480U CN 209165821 U CN209165821 U CN 209165821U
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China
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heat exchanger
oil
carbon dioxide
refrigerating machine
gas
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CN201822087480.6U
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Chinese (zh)
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杨红光
王镇翔
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Xiamen Casting Power Energy Saving Technology Co Ltd
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Xiamen Casting Power Energy Saving Technology Co Ltd
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Abstract

The utility model discloses a kind of carbon dioxide refrigerating machine total heat recovery systems, are related to refrigeration unit applied technical field, solve lubricating oil waste heat after recuperation of heat and lose the technical issues of reducing heat recovery efficiency.Technical points include compressor, gs-oil separator, condenser, coolant storage tank and the evaporator of successively pipeline connection, and the gs-oil separator is connected with oil heat exchanger and oil cooler in turn by pipeline and is ultimately attached to compressor;Gas-heat exchanger is provided between the compressor and condenser, the oil heat exchanger and gas-heat exchanger are respectively connected with water inlet line and collection conduit, the collection conduit is connected with hot water storing tank, secondary unit is also connected on pipeline between the oil heat exchanger and oil cooler, secondary unit is provided with filling pipe and outlet conduit, and the utility model has the advantages that promote heat recovery efficiency.

Description

Carbon dioxide refrigerating machine total heat recovery system
Technical field
The utility model relates to refrigeration unit applied technical fields, more specifically, it relates to a kind of carbon dioxide refrigeration Machine total heat recovery system.
Background technique
A kind of efficient recuperation of heat refrigeration unit is disclosed in the Chinese patent that notification number is CN2418408Y, mainly by compressing Machine, condenser, evaporator and hot water storing tank form a refrigerant circuit, set throttle valve on pipeline, the compression in refrigerant circuit One reverse-flow heat exchanger is set between machine and condenser;The water side outlet of heat exchanger and a closed hot water storing tank It is connected;One temperature sensor is set at heat exchanger outlet, and the signal of the hot water outlet temperature measured, which is sent to, to be set Set the cold water control valve in heat exchanger entrance;Cold water flows directly into heat exchanger, and it is spare that hot water storing tank is flowed into after heating.
It is similar to above-mentioned recuperation of heat refrigeration unit in the prior art, generally passes through compressor for refrigerant and compresses fortune It is defeated, cold water is cooperated by heat exchanger, by the refrigeration in the heat recovery to hot water storage tank in refrigerant, after heat recovery Medium is freezed by condenser and evaporator.
Prior art among the above has the following deficiencies: to recycle the heat of lubricating oil, by oil heat exchanger pipe Road is connected to compressor, the heat transfer that compressor workmanship generates to its internal lubricant passage way, the output channel of lubricant passage way It is connected to oil heat exchanger, is recycled by heat of the oil heat exchanger to lubricating oil.For the purposes of on recycling refrigerant Because of the heat that compressor work absorbs, gas-heat exchanger is installed on the pipeline usually between compressor and condenser, to refrigeration Heat entrained by medium is recycled.Existing heat exchanger its be usually that heat-conducting medium is carried out with hot gas or hot oil using water Heat exchange simultaneously stores.Since lubricating oil is absorbing heat that its own also has certain temperature by oil heat exchanger, in order to realize lubrication Recycling of the oil to compressor, is further typically provided with the oil cooler for being connected to compressor, by oil cooler to lubricating oil Lubricating oil is sent into compressor again after being cooled down, guarantees its using effect in compressor, also therefore wastes lubrication The temperature that oil is reduced in oil cooler, reduces heat recovery efficiency.
Utility model content
Problem in view of the prior art, the purpose of this utility model is to provide a kind of carbon dioxide refrigerating machine total heat recoveries System has the advantages that promote heat recovery efficiency.
To achieve the above object, the utility model provides following technical solution: a kind of full heat time of carbon dioxide refrigerating machine Receipts system, compressor, gs-oil separator, condenser, coolant storage tank and evaporator including the connection of successively pipeline, the oil gas point Oil heat exchanger and oil cooler are connected in turn by pipeline from device and are ultimately attached to compressor;The compressor and condensation Be additionally provided with gas-heat exchanger on pipeline between device, the oil heat exchanger and gas-heat exchanger be respectively connected with water inlet line with Collection conduit, the collection conduit are connected with hot water storing tank, go back on the pipeline between the oil heat exchanger and oil cooler It is connected with secondary unit, secondary unit is provided with filling pipe and outlet conduit.
By using above-mentioned technical proposal, when refrigeration machine works, using carbon dioxide as refrigerant, carbon dioxide is through over-voltage Freeze after contracting machine, condenser and evaporator effect.It lubricates in-oil cylinder lubricating oil and absorbs the heat that compressor work generates After flow out in oil heat exchanger.Meanwhile the carbon dioxide for absorbing compressor work heat is delivered in gas-heat exchanger, oil With water it is heat exchange medium in heat exchanger and gas-heat exchanger, is absorbed in lubricating oil and carbon dioxide gas by exchanged water Heat.Lubricating oil after oil heat exchanger heat exchange also has certain temperature, by secondary unit to lubricating oil Residual temperature is absorbed, and with the heat that lubricating oil is lost under oil cooler effect, promotes the heat recovery efficiency of lubricating oil.
The utility model is further arranged to: the outlet conduit of the secondary unit is connected to the gas-heat exchanger Water inlet line.
By using above-mentioned technical proposal, the delivery that secondary unit outlet conduit exports to gas-heat exchanger In, to promote the initial temperature of gas-heat exchanger exchanged water, collection conduit is flowed into be promoted after gas heat exchange carries out heat exchange The temperature of interior exchanged water, further raising heat exchanging efficiency.
The utility model is further arranged to: the filling pipe of the secondary unit is connected to the oil heat exchanger Water inlet line, the collection conduit of the gas-heat exchanger is connected to the collection conduit of the oil heat exchanger.
By using above-mentioned technical proposal, secondary unit is connected with the water inlet line of oil heat exchanger, Yi Jiqi Heat exchanger is connected to the water inlet and collection efficiency for guaranteeing exchanged water with the collection conduit of oil heat exchanger, and reduces pipeline Space occupied.
The utility model is further arranged to: the collection conduit of the gas-heat exchanger is located at and shown oil heat exchanger The connectivity part of collection conduit is provided with triple valve.
By using above-mentioned technical proposal, company of the triple valve to realize gas-heat exchanger Yu oil heat exchanger collection conduit Logical setting, guarantees the outbound course phase for the heat exchange water that the heat exchange water exported in gas-heat exchanger is exported with oil heat exchanger Together.
The utility model is further arranged to: the junction of the water inlet line and oil heat exchanger is provided with for adjusting The inlet regulating valve of flow of inlet water.
By using above-mentioned technical proposal, inlet regulating valve is for injecting exchanged water into oil heat exchanger to water inlet line Injection rate be adjusted, according to the heat regulation water in exchanger to guarantee thermal conversion efficiency.
The utility model is further arranged to: the junction of the collection conduit and oil heat exchanger is provided with temperature sensing Device, the inlet regulating valve are solenoid valve, and the temperature sensor is electrically connected to the inlet regulating valve.
By using above-mentioned technical proposal, inlet regulating valve carries out switch-mode regulation by temperature sensor, works as temperature sensor It is detected when the temperature is excessively high, inlet regulating valve automatic adjustment increase its water injection rate into oil heat exchanger, to reach The effect of inlet regulating valve automatic adjustment.
The utility model is further arranged to: the hot water storing tank is additionally provided with the connection oil heat exchanger water inlet pipe The circulating line in road, the water being equipped on the circulating line in control hot water storing tank pass through circulation pipe to inflow water inlet line Switch valve.
By using above-mentioned technical proposal, when the hot water in hot water storing tank is when long-time, which is not used, to be reduced, wait press Contracting machine turns on the switch valve when running, so that the exchanged water in hot water storing tank flows into water inlet line, supplies water, mentions to water inlet line Rise the using effect for the exchanged water saved in hot water storing tank.
The utility model is further arranged to: the oil heat exchanger is cold and hot contraflow heat exchanger.
By using above-mentioned technical proposal, in oil heat exchanger when cold and hot adverse current, the outlet temperature of exchanged water is higher than lubrication The outlet temperature of oil;When cold and hot fair current, the outlet temperature of lubricating oil is lower than the outlet temperature of exchanged water, therefore in adverse current, profit The temperature difference of lubricating oil and exchanged water is larger, i.e., big when mean temperature difference is than fair current.It, countercurrently can be with so that when heat exchange area is identical More heat is transmitted, heat recovery efficiency is further promoted.
Compared with prior art, the utility model has the beneficial effects that
(1) secondary recuperation of heat is carried out to the lubricating oil Jing Guo recuperation of heat before oil cooler by secondary unit, mentioned Rise the oily heat recovery efficiency of lubricating oil;
(2) water supply preheating is carried out to gas-heat exchanger by the outlet conduit of secondary unit, promotes gas-heat exchanger Gas heat recovery efficiency;
(3) being equipped with by temperature sensor and inlet regulating valve, realize exchange water in oil heat exchanger from It is dynamic to adjust, guarantee heat exchanger effectiveness.
Detailed description of the invention
Fig. 1 is the flowage structure schematic diagram of the present embodiment.
Appended drawing reference: 1, compressor;2, gs-oil separator;21, oil heat exchanger;22, gas-heat exchanger;23, water inlet pipe Road;24, collection conduit;25, inlet regulating valve;26, triple valve;3, condenser;4, coolant storage tank;5, evaporator;6, hot water stores up Deposit tank;61, circulating line;62, switch valve;63, waterpipe is used;7, secondary unit;71, filling pipe;72, outlet pipe Road;8, oil cooler.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
Embodiment, a kind of carbon dioxide refrigerating machine total heat recovery system, as shown in Figure 1, including the pressure of successively pipeline connection Contracting machine 1, gs-oil separator 2, condenser 3, coolant storage tank 4 and evaporator 5.Gs-oil separator 2 is connected with oily heat by pipeline and hands over Parallel operation 21.Gas-heat exchanger 22 is additionally provided on pipeline between compressor 1 and condenser 3, oil heat exchanger 21 and gas heat are handed over Parallel operation 22 is respectively connected with water inlet line 23 and collection conduit 24, and collection conduit 24 is connected with hot water storing tank 6, oil heat exchanger 21 Be also connected with secondary unit 7 on pipeline between oil cooler 8, secondary unit 7 be provided with filling pipe 71 with Outlet conduit 72.
As shown in Figure 1, the filling pipe 71 of secondary unit 7 is connected to the water inlet line 23 of oil heat exchanger 21, Outlet conduit 72 is connected to the water inlet line 23 of gas-heat exchanger 22.Secondary unit 7 and oil heat exchanger in the present embodiment 21 be cold and hot reverse-flow oil heat exchanger, and oil heat exchanger 21 goes back pipeline connection oil cooler 8, and 8 pipeline of oil cooler connects Compressor 1 is connected to for will be recycled in the lubricating oil injection compressor 1 after recuperation of heat.
As shown in Figure 1, oil heat exchanger 21, which is located at, is provided with inlet regulating valve 25 with the junction of water inlet line 23, intake Regulating valve 25 is solenoid valve.The junction of oil heat exchanger 21 and collection conduit 24 is provided with for monitoring in oil heat exchanger 21 The temperature sensor of temperature, temperature sensor be electrically connected to inlet regulating valve 25 with control inlet regulating valve 25 to inflow from Dynamic adjusting movement.Gas-heat exchanger 22 is connected with the collection conduit 24 of oil heat exchanger 21 by the way that triple valve 26 is arranged.Hot water It is provided with the circulating line 61 of the water inlet line 23 of connection oil heat exchanger 21 on holding vessel 6, control is installed on circulating line 61 Switch valve 62 of the water in water store tank 6 by circulation pipe to inflow water inlet line 23 is heated, is additionally provided on hot water storing tank 6 Waterpipe 63 is used for what is be called to the exchanged water in tank.
The course of work of the utility model and have the beneficial effect that: when refrigeration machine works, carbon dioxide is by the pressure of compressor 1 It contracts to be delivered to after condenser 3 is acted on evaporator 5 and freeze.The lubricating oil of heat is absorbed under the effect of gs-oil separator 2 It flow in oil heat exchanger 21, the carbon dioxide for absorbing heat is delivered to gas-heat exchanger 22 under the action of gs-oil separator 2 In.Using water as heat-exchange medium in oil heat exchanger 21 and gas-heat exchanger 22, pass through exchanged water and lubricating oil and titanium dioxide Carbon gas carries out heat exchange, and the exchanged water for obtaining heat is stored into hot water storing tank 6.7 pairs of secondary unit by oil heat The exchanged water of exchanger 21 carries out secondary heat exchange, reduces the heat that lubricating oil is lost under the effect of oil cooler 8, while to defeated The exchanged water entered in gas-heat exchanger 22 is preheated, to promote heat recovery efficiency.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.

Claims (8)

1. a kind of carbon dioxide refrigerating machine total heat recovery system, compressor (1), gs-oil separator including the connection of successively pipeline (2), condenser (3), coolant storage tank (4) and evaporator (5), the gs-oil separator (2) are connected with oily heat in turn by pipeline Exchanger (21) and oil cooler (8) are simultaneously ultimately attached to compressor (1);Pipe between the compressor (1) and condenser (3) It is additionally provided on road gas-heat exchanger (22), the oil heat exchanger (21) and gas-heat exchanger (22) are respectively connected with water inlet line (23) and collection conduit (24), the collection conduit (24) are connected with hot water storing tank (6), it is characterised in that: the oil heat is handed over It is also connected on pipeline between parallel operation (21) and oil cooler (8) secondary unit (7), secondary unit (7) setting There are filling pipe (71) and outlet conduit (72).
2. carbon dioxide refrigerating machine total heat recovery system according to claim 1, it is characterised in that: the auxiliary heat exchange The outlet conduit (72) of device (7) is connected to the water inlet line (23) of the gas-heat exchanger (22).
3. carbon dioxide refrigerating machine total heat recovery system according to claim 2, it is characterised in that: the auxiliary heat exchange The filling pipe (71) of device (7) is connected to the water inlet line (23) of the oil heat exchanger (21), the gas-heat exchanger (22) Collection conduit (24) be connected to the collection conduits (24) of the oil heat exchanger (21).
4. carbon dioxide refrigerating machine total heat recovery system according to claim 3, it is characterised in that: the gas-heat exchanger (22) collection conduit (24), which is located at, is provided with triple valve with the connectivity part of the collection conduit (24) of shown oil heat exchanger (21) (26).
5. carbon dioxide refrigerating machine total heat recovery system according to claim 1, it is characterised in that: the water inlet line (23) junction of oil heat exchanger (21) is provided with the inlet regulating valve (25) for adjusting flow of inlet water.
6. carbon dioxide refrigerating machine total heat recovery system according to claim 5, it is characterised in that: the collection conduit (24) temperature sensor is provided with the junction of oil heat exchanger (21), the inlet regulating valve (25) is solenoid valve, described Temperature sensor is electrically connected to the inlet regulating valve (25).
7. carbon dioxide refrigerating machine total heat recovery system according to claim 1, it is characterised in that: the hot water storing tank (6) circulating line (61) for connecting oil heat exchanger (21) water inlet line (23), the circulating line (61) are additionally provided with On be equipped with control hot water storing tank (6) in water by circulating line (61) flow into water inlet line (23) switch valve (62).
8. carbon dioxide refrigerating machine total heat recovery system according to claim 1, it is characterised in that: the oil heat exchanger It (21) is cold and hot reverse-flow oil heat exchanger.
CN201822087480.6U 2018-12-12 2018-12-12 Carbon dioxide refrigerating machine total heat recovery system Active CN209165821U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822087480.6U CN209165821U (en) 2018-12-12 2018-12-12 Carbon dioxide refrigerating machine total heat recovery system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822087480.6U CN209165821U (en) 2018-12-12 2018-12-12 Carbon dioxide refrigerating machine total heat recovery system

Publications (1)

Publication Number Publication Date
CN209165821U true CN209165821U (en) 2019-07-26

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Application Number Title Priority Date Filing Date
CN201822087480.6U Active CN209165821U (en) 2018-12-12 2018-12-12 Carbon dioxide refrigerating machine total heat recovery system

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113803899A (en) * 2021-10-11 2021-12-17 临沂冰雪制冷设备有限公司 Heat recovery energy-saving system based on screw rod refrigeration compressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113803899A (en) * 2021-10-11 2021-12-17 临沂冰雪制冷设备有限公司 Heat recovery energy-saving system based on screw rod refrigeration compressor
CN113803899B (en) * 2021-10-11 2022-09-20 临沂冰雪制冷设备有限公司 Heat recovery energy-saving system based on screw rod refrigeration compressor

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