CN203719270U - Double-air pump circulating liquid-feeding refrigeration system - Google Patents
Double-air pump circulating liquid-feeding refrigeration system Download PDFInfo
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- CN203719270U CN203719270U CN201420113329.4U CN201420113329U CN203719270U CN 203719270 U CN203719270 U CN 203719270U CN 201420113329 U CN201420113329 U CN 201420113329U CN 203719270 U CN203719270 U CN 203719270U
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 110
- 239000012530 fluid Substances 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model relates to a double-air pump circulating liquid-feeding refrigeration system. The double-air pump circulating liquid-feeding refrigeration system comprises a compressor, an evaporator and a circulating liquid feeding device; the circulating liquid feeding device comprises a circulating barrel, an air pump A and an air pump B; the circulating barrel is connected with the compressor by use of a liquid feeding pipeline, an oil return pipeline and a compressor air suction pipeline; the air pump A is connected with a compressor exhaust pipeline by use of an electromagnetic valve A, the electromagnetic valve A is connected with the circulating barrel and the air pump A is connected with the compressor air suction pipeline by use of the electromagnetic valve A; the air pump B is connected with the compressor exhaust pipeline by use of an electromagnetic valve B, connected with the circulating barrel by use of the electromagnetic valve B and also connected with the compressor air suction pipeline by use of the electromagnetic valve B; the air pump A and the air pump B both are connected with the inlet of the evaporator by virtue of an evaporator air inlet pipeline; the outlet of the evaporator is connected with the circulating barrel by use of an evaporator air outlet pipeline, a liquid level controller A is arranged in the air pump A, and a liquid level controller B is arranged in the air pump B.
Description
Technical field
The utility model belongs to industrial refrigeration technical field, relates to a kind of refrigeration system, especially a kind of two air pump circulating feeding liquid refrigeration systems.
Background technology
Freon, in industrial refrigeration field, has developed into large-scale steel structure storehouse and multi-layer civil construction freezer from the initial combinatorial libraries of tens square metres; The various ways such as large-scale fresh-keeping, controlled atmosphere, food synthetic job shop, low temperature logistics, snap frozen, freeze tunnel are developed into from small-sized fresh-keeping, freezer; From being only used in miniature cold storage, develop into the even large cold storage of several ten thousand tons of several kilotons; Refrigeration plant has also developed into large-scale unit in parallel from all-in-one-piece small-sized condensation unit, and quantity, the area of evaporimeter increase greatly.The application of many times of pressure feed flows of refrigeration system is more and more, and existing many times of schemes of forcing liquid-supplying systems to adopt cold-producing medium canned motor pump to add low pressure recycle bucket realize more.
Utility model content
The purpose of this utility model is, the defect existing for above-mentioned prior art provides design a kind of two air pump circulating feeding liquid refrigeration systems, to solve the problems of the technologies described above.
For achieving the above object, the utility model provides following technical scheme:
A kind of two air pump circulating feeding liquid refrigeration system, comprising: compressor, evaporimeter and circulating feeding liquid device, it is characterized in that: described circulating feeding liquid device comprises circulation barrel, air pump A and air pump B, described circulation barrel passes through feed liquid pipeline, oil returning tube and compressor air suction pipeline are connected with compressor, described air pump A is connected with compressor air-discharging pipeline by adding pressure electromagnetic valve A, be connected with circulation barrel by liquid supply electromagnetic valve A, be connected with compressor air suction pipeline by vacuum solenoid valve A, described air pump B is connected with compressor air-discharging pipeline by adding pressure electromagnetic valve B, be connected with circulation barrel by liquid supply electromagnetic valve B, be connected with compressor air suction pipeline by vacuum solenoid valve B, described air pump A is all connected with evaporator inlet by evaporimeter admission line with air pump B, the outlet of evaporimeter is connected with circulation barrel by evaporimeter outlet pipe, in described air pump A, be provided with fluid level controller A, in described air pump B, be provided with fluid level controller B.
Preferably, on described feed liquid pipeline, be provided with liquid supply electromagnetic valve.
Can realize the automatic control of feed liquid pipeline being opened to closure by liquid supply electromagnetic valve is set, not only save human cost, and improve running efficiency of system.
Preferably, on described oil returning tube, be provided with oil return solenoid valve.
Can realize the automatic control of oil returning tube being opened to closure by oil return solenoid valve is set, not only save human cost, and improve running efficiency of system, realize the automatic oil return of system.
Preferably, the volume of described air pump A and air pump B is 60L.
Preferably, the volume of described circulation barrel is 90L.
Preferably, the output of described fluid level controller A is connected with liquid level upper limit switch A and liquid level limit switch A, and described liquid level limit switch A connects with relay two, and place in circuit; Described liquid level upper limit switch A connects with the normally-closed contact of relay two one end, the other end connect with normally-closed contact, the relay one of relay three after place in circuit, liquid level upper limit switch A is also parallel with the normally opened contact of relay one, the normally-closed contact of relay three connect with relay one after with relay five carry out in parallel, the normally opened contact of the described relay one afterwards place in circuit of connecting with relay five.
Preferably, the output of described fluid level controller B is connected with liquid level upper limit switch B and liquid level limit switch B, place in circuit after described liquid level limit switch B connects with relay four; Connect with the normally-closed contact of relay four in one end of described liquid level upper limit switch B, the other end connect with normally-closed contact, the relay three of relay one after place in circuit, described liquid level upper limit switch B is also parallel with the normally opened contact of relay three, the normally-closed contact of relay one connect with relay three after with relay six carry out in parallel, the normally opened contact of the described relay three afterwards place in circuit of connecting with relay six.
Preferably, the normally-closed contact of described relay five is connected with vacuum solenoid valve A, liquid supply electromagnetic valve A, and place in circuit; The normally-closed contact of described relay six is connected with vacuum solenoid valve B, liquid supply electromagnetic valve B, and place in circuit; The normally-closed contact of described relay one with add pressure electromagnetic valve B and be connected, and place in circuit; The normally opened contact of described relay one with add pressure electromagnetic valve A and be connected, and place in circuit; The normally-closed contact of described relay three is connected with vacuum solenoid valve B, liquid supply electromagnetic valve B, and place in circuit; The normally opened contact of described relay three with add pressure electromagnetic valve B and be connected, and place in circuit.
The beneficial effects of the utility model are, the utility model adopts time parameter to control the control mode of drain time before having banned, but adopt the liquid level in air pump A and air pump B to control, not only improve control accuracy, and the impact that not changed by moulding pressure, evaporator pressure, the interior liquid level of circulation barrel etc., make to control and more tend towards stability, the electric connecting mode relating in the utility model, air pump A and air pump B be feed liquor simultaneously, but simultaneously outwards feed flow, in the time that the liquid level of air pump A and air pump B is all below upper limit liquid level, adding pressure electromagnetic valve A and add pressure electromagnetic valve B all must not be electric, and vacuum solenoid valve A, vacuum solenoid valve B, liquid supply electromagnetic valve A, liquid supply electromagnetic valve B can be simultaneously electric and open, make air pump A and air pump B feed liquor simultaneously, if the liquid level of air pump A first arrives the upper limit, adding pressure electromagnetic valve A opens, and liquid supply electromagnetic valve A and vacuum solenoid valve A close simultaneously, when air pump B reaches in limited time, liquid supply electromagnetic valve B and vacuum solenoid valve B can close simultaneously, but add pressure electromagnetic valve B and cannot obtain electric opening, vice versa, in addition, the utility model design principle is reliable, simple in structure, has application prospect very widely.
Brief description of the drawings
The structural representation of a kind of couple of air pump circulating feeding liquid refrigeration system embodiment that Fig. 1 provides for the utility model.
The electrical schematic diagram of a kind of couple of air pump circulating feeding liquid refrigeration system embodiment that Fig. 2 provides for the utility model.
Wherein, 1-compressor, 2-circulation barrel, 3-evaporimeter, 4-air pump A, 5-air pump B, 6-feed liquid pipeline, 7-oil returning tube, 8-compressor air suction pipeline, 9-compressor air-discharging pipeline, 10-evaporimeter admission line, 11-evaporimeter outlet pipe, 12-liquid supply electromagnetic valve, 13-return flow solenoid valve, 14-adds pressure electromagnetic valve A, 15-liquid supply electromagnetic valve A, 16-vacuum solenoid valve A, 17-adds pressure electromagnetic valve B, 18-liquid supply electromagnetic valve B, 19-vacuum solenoid valve B, 20-liquid level upper limit switch A, 21-liquid level limit switch A, 22-liquid level upper limit switch B, 23-liquid level limit switch B, 240-relay one, the normally opened contact of 241-relay one, the normally-closed contact of 242-relay one, 250 relays two, the normally-closed contact of 252-relay two, 260 relays three, the normally opened contact of 261-relay three, the normally-closed contact of 262-relay three, 270 relays four, the normally-closed contact of 272-relay four, 280 relays five, the normally-closed contact of 282-relay five, 290 relays six, the normally-closed contact of 292-relay six, 41-fluid level controller A, 51-fluid level controller B.
Detailed description of the invention
Below in conjunction with accompanying drawing and by specific embodiment, the utility model is elaborated, and following examples are to explanation of the present utility model, and the utility model is not limited to following examples.
As depicted in figs. 1 and 2, the two air pump circulating feeding liquid refrigeration systems of one that the utility model provides, comprise: compressor 1, evaporimeter 3 and circulating feeding liquid device, described circulating feeding liquid device comprises circulation barrel 2, air pump A4 and air pump B5, described circulation barrel 2 is by feed liquid pipeline 6, oil returning tube 7 and compressor air suction pipeline 8 are connected with compressor 1, described air pump A4 is connected with compressor air-discharging pipeline 9 by adding pressure electromagnetic valve A14, be connected with circulation barrel 2 by liquid supply electromagnetic valve A15, be connected with compressor air suction pipeline 8 by vacuum solenoid valve A16, described air pump B5 is connected with compressor air-discharging pipeline 9 by adding pressure electromagnetic valve B17, be connected with circulation barrel 2 by liquid supply electromagnetic valve B18, be connected with compressor air suction pipeline 8 by vacuum solenoid valve B19, described air pump A4 is all connected with evaporimeter 3 entrances by evaporimeter admission line 10 with air pump B5, the outlet of evaporimeter 3 is connected with circulation barrel 2 by evaporimeter outlet pipe 11, in described air pump A4, be provided with fluid level controller A41, in described air pump B5, be provided with fluid level controller B51.
In the present embodiment, on described feed liquid pipeline 6, be provided with liquid supply electromagnetic valve 12.
Can realize the automatic control of feed liquid pipeline being opened to closure by liquid supply electromagnetic valve is set, not only save human cost, and improve running efficiency of system.
In the present embodiment, on described oil returning tube 7, be provided with oil return solenoid valve 13.
Can realize the automatic control of feed liquid pipeline being opened to closure by liquid supply electromagnetic valve is set, not only save human cost, and improve running efficiency of system.
In the present embodiment, the volume of described air pump A4 and air pump B5 is 60L.
In the present embodiment, the volume of described circulation barrel 2 is 90L.
In the present embodiment, the output of described fluid level controller A41 is connected with liquid level upper limit switch A20 and liquid level limit switch A21, and described liquid level limit switch A21 connects with relay 2 250, and place in circuit; Described liquid level upper limit switch A20 connects with the normally-closed contact 252 of relay two one end, the other end connect with normally-closed contact 262, the relay 1 of relay three after place in circuit, liquid level upper limit switch A20 is also parallel with the normally opened contact 241 of relay one, the normally-closed contact 262 of relay three connect with relay 1 after with relay 5 280 carry out in parallel, the normally opened contact 241 of the described relay one afterwards place in circuit of connecting with relay 5 280.
In the present embodiment, the output of described fluid level controller B51 is connected with liquid level upper limit switch B22 and liquid level limit switch B23, place in circuit after described liquid level limit switch B23 connects with relay 4 270; Connect with the normally-closed contact 272 of relay four in one end of described liquid level upper limit switch B22, the other end connect with normally-closed contact 242, the relay 3 260 of relay one after place in circuit, described liquid level upper limit switch B22 is also parallel with the normally opened contact 261 of relay three, the normally-closed contact 242 of relay one with relay 3 260 series connection after with relay 6 290 carry out in parallel, the normally opened contact 261 of described relay three place in circuit afterwards of connecting with relay 6 290.
In the present embodiment, the normally-closed contact 282 of described relay five is connected with vacuum solenoid valve A16, liquid supply electromagnetic valve A15, and place in circuit; The normally-closed contact 292 of described relay six is connected with vacuum solenoid valve B19, liquid supply electromagnetic valve B18, and place in circuit; The normally-closed contact 242 of described relay one with add pressure electromagnetic valve B17 and be connected, and place in circuit; The normally opened contact 241 of described relay one with add pressure electromagnetic valve A14 and be connected, and place in circuit; The normally-closed contact 262 of described relay three is connected with vacuum solenoid valve B19, liquid supply electromagnetic valve B18, and place in circuit; The normally opened contact 261 of described relay three with add pressure electromagnetic valve B17 and be connected, and place in circuit.
In the present embodiment, air pump A4 and air pump B5 be feed liquor simultaneously, but simultaneously outwards feed flow, in the time that the liquid level of air pump A4 and air pump B5 is all below upper limit liquid level, adding pressure electromagnetic valve A14 and add pressure electromagnetic valve B17 all must not be electric, and vacuum solenoid valve A16, vacuum solenoid valve B19, liquid supply electromagnetic valve A15, liquid supply electromagnetic valve B18 can be simultaneously electric and open, make air pump A4 and air pump B5 feed liquor simultaneously; If the liquid level of air pump A4 first arrives the upper limit, adding pressure electromagnetic valve A14 opens, and liquid supply electromagnetic valve A15 and vacuum solenoid valve A16 close simultaneously, when air pump B5 reaches in limited time, liquid supply electromagnetic valve B18 and vacuum solenoid valve B19 can close simultaneously, cannot obtain electric opening but add pressure electromagnetic valve B17, vice versa.
Disclosed is above only preferred embodiment of the present utility model; but the utility model is not limited thereto; any those skilled in the art can think there is no a creationary variation; and not departing from some improvements and modifications of doing under the utility model principle prerequisite, all should drop in protection domain of the present utility model.
Claims (8)
1. two air pump circulating feeding liquid refrigeration systems, comprising: compressor, evaporimeter and circulating feeding liquid device, it is characterized in that: described circulating feeding liquid device comprises circulation barrel, air pump A and air pump B, described circulation barrel passes through feed liquid pipeline, oil returning tube and compressor air suction pipeline are connected with compressor, described air pump A is connected with compressor air-discharging pipeline by adding pressure electromagnetic valve A, be connected with circulation barrel by liquid supply electromagnetic valve A, be connected with compressor air suction pipeline by vacuum solenoid valve A, described air pump B is connected with compressor air-discharging pipeline by adding pressure electromagnetic valve B, be connected with circulation barrel by liquid supply electromagnetic valve B, be connected with compressor air suction pipeline by vacuum solenoid valve B, described air pump A is all connected with evaporator inlet by evaporimeter admission line with air pump B, the outlet of evaporimeter is connected with circulation barrel by evaporimeter outlet pipe, in described air pump A, be provided with fluid level controller A, in described air pump B, be provided with fluid level controller B.
2. according to claim 1 pair of air pump circulating feeding liquid refrigeration system, is characterized in that: on described feed liquid pipeline, be provided with liquid supply electromagnetic valve.
3. according to claim 1 and 2 pair of air pump circulating feeding liquid refrigeration system, is characterized in that: on described oil returning tube, be provided with oil return solenoid valve.
4. according to claim 3 pair of air pump circulating feeding liquid refrigeration system, is characterized in that: the volume of described air pump A and air pump B is 60L.
5. according to claim 4 pair of air pump circulating feeding liquid refrigeration system, is characterized in that: the volume of described circulation barrel is 90L.
6. according to claim 5 pair of air pump circulating feeding liquid refrigeration system, is characterized in that: the output of described fluid level controller A is connected with liquid level upper limit switch A and liquid level limit switch A, and described liquid level limit switch A connects with relay two, and place in circuit; Described liquid level upper limit switch A connects with the normally-closed contact of relay two one end, the other end connect with normally-closed contact, the relay one of relay three after place in circuit, liquid level upper limit switch A is also parallel with the normally opened contact of relay one, the normally-closed contact of relay three connect with relay one after with relay five carry out in parallel, the normally opened contact of the described relay one afterwards place in circuit of connecting with relay five.
7. according to claim 6 pair of air pump circulating feeding liquid refrigeration system, is characterized in that: the output of described fluid level controller B is connected with liquid level upper limit switch B and liquid level limit switch B, place in circuit after described liquid level limit switch B connects with relay four; Connect with the normally-closed contact of relay four in one end of described liquid level upper limit switch B, the other end connect with normally-closed contact, the relay three of relay one after place in circuit, described liquid level upper limit switch B is also parallel with the normally opened contact of relay three, the normally-closed contact of relay one connect with relay three after with relay six carry out in parallel, the normally opened contact of the described relay three afterwards place in circuit of connecting with relay six.
8. according to claim 7 pair of air pump circulating feeding liquid refrigeration system, is characterized in that: the normally-closed contact of described relay five is connected with vacuum solenoid valve A, liquid supply electromagnetic valve A, and place in circuit; The normally-closed contact of described relay six is connected with vacuum solenoid valve B, liquid supply electromagnetic valve B, and place in circuit; The normally-closed contact of described relay one with add pressure electromagnetic valve B and be connected, and place in circuit; The normally opened contact of described relay one with add pressure electromagnetic valve A and be connected, and place in circuit; The normally-closed contact of described relay three is connected with vacuum solenoid valve B, liquid supply electromagnetic valve B, and place in circuit; The normally opened contact of described relay three with add pressure electromagnetic valve B and be connected, and place in circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113329.4U CN203719270U (en) | 2014-03-13 | 2014-03-13 | Double-air pump circulating liquid-feeding refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113329.4U CN203719270U (en) | 2014-03-13 | 2014-03-13 | Double-air pump circulating liquid-feeding refrigeration system |
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| Publication Number | Publication Date |
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| CN203719270U true CN203719270U (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420113329.4U Expired - Fee Related CN203719270U (en) | 2014-03-13 | 2014-03-13 | Double-air pump circulating liquid-feeding refrigeration system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052213A (en) * | 2016-07-22 | 2016-10-26 | 天津商业大学 | Refrigerating system adopting pressurizing tank to keep pressure of liquid refrigerant in front of thermostatic expansion valve constant |
| CN114353363A (en) * | 2022-03-10 | 2022-04-15 | 中国空气动力研究与发展中心低速空气动力研究所 | Icing wind tunnel heat exchanger outlet airflow temperature control system and method |
-
2014
- 2014-03-13 CN CN201420113329.4U patent/CN203719270U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052213A (en) * | 2016-07-22 | 2016-10-26 | 天津商业大学 | Refrigerating system adopting pressurizing tank to keep pressure of liquid refrigerant in front of thermostatic expansion valve constant |
| CN106052213B (en) * | 2016-07-22 | 2018-06-22 | 天津商业大学 | Using the refrigeration system of liquid refrigerant pressure before the constant heating power expansion valve of pressurized canister |
| CN114353363A (en) * | 2022-03-10 | 2022-04-15 | 中国空气动力研究与发展中心低速空气动力研究所 | Icing wind tunnel heat exchanger outlet airflow temperature control system and method |
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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: 20140716 |