CN205066261U - Novel fluorine pump supplies liquid refrigerating system - Google Patents
Novel fluorine pump supplies liquid refrigerating system Download PDFInfo
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- CN205066261U CN205066261U CN201520722166.4U CN201520722166U CN205066261U CN 205066261 U CN205066261 U CN 205066261U CN 201520722166 U CN201520722166 U CN 201520722166U CN 205066261 U CN205066261 U CN 205066261U
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- refrigeration cycle
- pump
- liquid
- cool cycles
- novel fluorine
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Abstract
The utility model discloses a novel fluorine pump supplies liquid refrigerating system, include the circulation container and constitute independent endless refrigeration cycle and refrigeration cycle with the circulation container respectively, secondary refrigerant fluid passage canned motor pump is sent into and is flowed back to the circulation container after terminal evaporimeter and the vaporization heat absorption among the refrigeration cycle, refrigeration cycle's secondary refrigerant cools off through overlapping condensation unit, gas -cooled that secondary refrigerant after the cooling shower head in through the circulation container flowed back to refrigeration cycle, the circulation container has connect pressure sensor, relief valve, liquid level switch to the safety protection of system, and canned motor pump among the refrigeration cycle is variable frequency pump, and the converter is connected at the temperature sensor of evaporimeter air outlet passing signal line electricity with setting up, but the temperature of stable control environmental laboratory need not drop into with the heating load, energy -conserving effect is obvious. The utility model discloses a R32 secondary refrigerant carries out contact heat exchange in the circulation container, the heat transfer effect is better, avoids an oil return difficult problem.
Description
Technical field
The utility model relates to refrigeration technology field, is specifically related to a kind of novel fluorine pump for liquid refrigeration system.
Background technology
In freon refrigeration system, terminad evaporimeter provides the mode of cold-producing medium to have liquid provision through direct expansion, gravity force liquid-supply and several mode of fluorine pump feed flow.Liquid provision through direct expansion system drives whole circulation by compressor power, and high pressure refrigerant liquid is by expansion valve throttling refrigeration, and structure is simple, and investing less, is current the most frequently used feed liquid way; Gravity force liquid-supply a kind ofly makes cold-producing medium flow into evaporimeter according to Action of Gravity Field to carry out a kind of mode of circularly cooling, its advantage is that system is simple, cold-producing medium is circulated with several times liquid supply rate by gravity, heat transfer coefficient is high, evaporator area is fully applied, but requires that the installation site of refrigeration unit exists certain difference in height with evaporimeter; Fluorine pump liquid-supplying system adds low pressure recycle bucket and fluorine pump, liquid refrigerant carries out pressure feed flow by fluorine pump and enters evaporimeter, but has problems, in actual moving process due to its oil return, knack operating personnel must be equipped with, therefore not be widely used.
Overlapping condensing refrigerant unit has a wide range of applications in field, thermocycling room.But when refrigeration system system complex, during many, the apart from each other and dispersion of evaporimeter quantity.Liquid provision through direct expansion and gravity force liquid-supply two kinds of modes are no longer applicable to this refrigeration system.And existing fluorine pump feed liquid way is improved, avoid problem of oil return, aobvious is particularly important.
Summary of the invention
For a prior art difficult problem, the purpose of this utility model is to provide a kind of novel fluorine pump for liquid refrigeration system, and feed flow is even, and heat exchange efficiency is high, simple to operate, solves the difficult point that conventional fluorine pump feed flow exists problem of oil return.
For achieving the above object, the utility model have employed following technical scheme:
A kind of novel fluorine pump, for liquid refrigeration system, is characterized in that: include circulation vessel, form cool cycles and the kind of refrigeration cycle of independent loops respectively with circulation vessel; Described cool cycles comprise connected successively by pipeline cool cycles outlet, the first stop valve, the first filter, the first canned motor pump, the first check valve, intermediate plate heat exchanger, the second stop valve, cool cycles entrance, spray head; Described intermediate plate heat exchanger is also connected with overlapping condensation unit; Described kind of refrigeration cycle comprise connected successively by pipeline kind of refrigeration cycle outlet, the 3rd stop valve, the second filter, secondary shielding pump, the second check valve, evaporimeter, the 4th stop valve, kind of refrigeration cycle entrance.
The novel fluorine pump of described one, for liquid refrigeration system, is characterized in that: the medium in described cool cycles and kind of refrigeration cycle is freon R32.
The novel fluorine pump of described one, for liquid refrigeration system, is characterized in that: set up inverse circulation line one in described cool cycles, sets up inverse circulation line two in kind of refrigeration cycle.
The novel fluorine pump of described one, for liquid refrigeration system, is characterized in that: be provided with kind of refrigeration cycle outlet, cool cycles outlet, liquid-level switch, temperature sensor bottom described circulation vessel; Middle part is provided with first against loop head, second against loop head; Top is provided with cool cycles entrance, kind of refrigeration cycle entrance; Top is provided with pressure sensor, safety valve.
The novel fluorine pump of described one is for liquid refrigeration system.It is characterized in that: described inverse circulation line one comprises the inverse loop exit of the first canned motor pump connected successively by pipeline, the 5th stop valve, first against loop head; Described inverse circulation line two comprises the inverse loop exit of the secondary shielding pump connected successively by pipeline, the 6th stop valve, second inversely loops back gas port.
The novel fluorine pump of described one is for liquid refrigeration system.It is characterized in that: described secondary shielding pump is variable frequency pump, the temperature sensor being arranged on evaporimeter air outlet is connected by the frequency converter of PID reconciliation statement with the second variable frequency pump.
The utility model has following beneficial effect:
The novel fluorine pump of the one that the utility model provides is for liquid refrigeration system, and key is circulation vessel, and circulation vessel top is gas phase zone, and bottom is liquid phase region; Refrigerating medium cool cycles and kind of refrigeration cycle are for independently to circulate, and heat in environmental laboratory is taken away by kind of refrigeration cycle, and refrigerating medium is the gas phase zone flowing back to circulation vessel after gaseous state by liquid conversion; In cool cycles, refrigerating medium enters the spray head in circulation vessel after absorbing the cold cooling of cascade refrigeration unit, by spray, the gas of gas phase zone is cooled to liquid, circulates successively; Tool has the following advantages:
(1) adopt refrigerating medium R32 to take away the refrigerating capacity of cascade refrigeration unit, avoid the system complex of overlapping unit liquid provision through direct expansion or fluorine pump feed flow, the problem of oil return difficulty;
(2) arrange spray equipment in circulation vessel, by R32 liquid spraying cooling gas, there is not the heat transfer temperature difference using heat exchanger to cause in good effect of heat exchange;
(3) canned motor pump that refrigerating medium kind of refrigeration cycle adopts is variable frequency pump, the frequency converter of this canned motor pump is electrically connected by holding wire with the temperature sensor being arranged on evaporimeter air outlet, control the mode of flow by variable frequency pump to control environment experiment indoor temperature, more energy-conservation compared with resisting temperature control method with heat.
Accompanying drawing explanation
Fig. 1 is that the utility model fluorine pump is for liquid refrigeration system schematic diagram.
The implication marked in figure is as follows:
10-circulation vessel; 11-first is against loop head; 12-second is against loop head; 13-liquid-level switch; 14-temperature sensor; 15-has pressure sensor; 16-safety valve; 20-cool cycles; 21-cool cycles exports; 22-first stop valve; 23-first filter; 24-first canned motor pump; 25-first check valve; 26-second stop valve; 27-cool cycles entrance; 28-spray head; 29-the 5th stop valve; 30-kind of refrigeration cycle; 31-kind of refrigeration cycle exports; 32-the 3rd stop valve; 33-first filter; 34-secondary shielding pump; 35-second check valve; 36-evaporimeter; 37-the 4th stop valve; 38-kind of refrigeration cycle entrance; 39-the 6th stop valve; 40-overlapping condensation unit; 41-intermediate plate heat exchanger.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
As Fig. 1, a kind of novel fluorine pump, for liquid refrigeration system, comprises circulation vessel 10, the cool cycles 20 forming independent loops respectively with circulation vessel 10, kind of refrigeration cycle 30.Wherein, described cool cycles 20 is comprised and being connected successively by pipeline: cool cycles outlet the 21, first stop valve 22, first filter 23, first canned motor pump 24, first check valve 25, intermediate plate heat exchanger 41, second stop valve 26, cool cycles entrance 27, spray head 28.Described intermediate plate heat exchanger 41 is also connected with overlapping condensation unit 40.
Described kind of refrigeration cycle 30 is comprised and being connected successively by pipeline: kind of refrigeration cycle outlet the 31, the 3rd stop valve 32, first filter 33, secondary shielding pump 34, second check valve 35, evaporimeter 36, the 4th stop valve 37, kind of refrigeration cycle entrance 38.Also establish inverse circulation line one in described refrigerating medium cool cycles, in described refrigerating medium kind of refrigeration cycle, also establish inverse circulation line two.
Kind of refrigeration cycle outlet 31, cool cycles outlet 21, liquid-level switch 13, temperature sensor 14 is provided with bottom circulation vessel described in the utility model; Middle part be provided with first against loop head 11, second against loop head 12; Top is provided with cool cycles entrance 28, kind of refrigeration cycle entrance 38; Top is provided with pressure sensor 15, connects safety valve 16.
Wherein, described inverse circulation line one comprises and connects the first canned motor pump 24 successively against loop exit, the 5th stop valve 29 to the first against on loop head 11 by pipeline; Described inverse circulation line two comprises and connects secondary shielding pump 34 successively against loop exit, the 6th stop valve 39 to the second against looping back on gas port 12 by pipeline.
Further, described secondary shielding pump 34 is variable frequency pump, and the temperature sensor being arranged on evaporimeter 36 air outlet is connected by the frequency converter of PID reconciliation statement with the second variable frequency pump.
Preferably, described refrigerating medium is freon R32.
A kind of novel fluorine pump is provided to be described further for liquid refrigeration system specific works principle to the utility model:
(1) start cascade refrigeration unit, it provides cold in intermediate plate heat exchanger; Start the first canned motor pump, R32 refrigerating medium in circulation vessel is pumped in intermediate plate heat exchanger and absorbs cold, and then enter spray atomizing in spray head and make the R32 condensation of gas of gas phase zone in circulation vessel be liquid, circulate successively.
(2) when temperature sensor in circulation vessel detects that R32 refrigerant temperature is cooled to target temperature, and liquid level gauge output display liquid level is in normal condition, start secondary shielding pump, R32 refrigerating medium in circulation vessel is pumped into the end evaporimeter in thermocycling room, R32 liquid gasification absorbs heat, and flow back to circulation vessel, be condensed into liquid, continue to participate in circulation.
(3) when cryogenic temperature in high/low temperature laboratory needs constant, control system, according to temperature sensor signal, controls the output flow of variable frequency pump, and then the temperature in Control release room.
(4) system is provided with liquid level protection device, and when in circulation vessel, refrigerating medium liquid level is reduced to setting value, secondary shielding pump quits work, and prevents pump from dallying; Be provided with mechanical type and control formula two kinds of pressure security protected modes; when circulation vessel pressure is increased to certain value; pressure relief safety valve is opened; if pressure continues to raise; pressure sensor outputs signal; control overlapping unit and the startup of the first canned motor pump, the refrigerant temperature in circulation vessel is cooled down, reduces pressure in circulation vessel.
Claims (6)
1. novel fluorine pump is for a liquid refrigeration system, it is characterized in that: include circulation vessel, form cool cycles and the kind of refrigeration cycle of independent loops respectively with circulation vessel; Described cool cycles comprise connected successively by pipeline cool cycles outlet, the first stop valve, the first filter, the first canned motor pump, the first check valve, intermediate plate heat exchanger, the second stop valve, cool cycles entrance, spray head; Described intermediate plate heat exchanger is also connected with overlapping condensation unit; Described kind of refrigeration cycle comprise connected successively by pipeline kind of refrigeration cycle outlet, the 3rd stop valve, the second filter, secondary shielding pump, the second check valve, evaporimeter, the 4th stop valve, kind of refrigeration cycle entrance.
2. the novel fluorine pump of one according to claim 1 is for liquid refrigeration system, it is characterized in that: the medium in described cool cycles and kind of refrigeration cycle is freon R32.
3. the novel fluorine pump of one according to claim 1 is for liquid refrigeration system, it is characterized in that: set up inverse circulation line one in described cool cycles, sets up inverse circulation line two in kind of refrigeration cycle.
4. the novel fluorine pump of one according to claim 1 is for liquid refrigeration system, it is characterized in that: be provided with kind of refrigeration cycle outlet, cool cycles outlet, liquid-level switch, temperature sensor bottom described circulation vessel; Middle part is provided with first against loop head, second against loop head; Top is provided with cool cycles entrance, kind of refrigeration cycle entrance; Top is provided with pressure sensor, safety valve.
5. the novel fluorine pump of one according to claim 3 is for liquid refrigeration system, it is characterized in that: described inverse circulation line one comprises the inverse loop exit of the first canned motor pump connected successively by pipeline, the 5th stop valve, first against loop head; Described inverse circulation line two comprises the inverse loop exit of the secondary shielding pump connected successively by pipeline, the 6th stop valve, second inversely loops back gas port.
6. the novel fluorine pump of one according to claim 1 is for liquid refrigeration system, and it is characterized in that: described secondary shielding pump is variable frequency pump, the temperature sensor being arranged on evaporimeter air outlet is connected by the frequency converter of PID reconciliation statement with the second variable frequency pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520722166.4U CN205066261U (en) | 2015-09-16 | 2015-09-16 | Novel fluorine pump supplies liquid refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520722166.4U CN205066261U (en) | 2015-09-16 | 2015-09-16 | Novel fluorine pump supplies liquid refrigerating system |
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| Publication Number | Publication Date |
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| CN205066261U true CN205066261U (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520722166.4U Expired - Fee Related CN205066261U (en) | 2015-09-16 | 2015-09-16 | Novel fluorine pump supplies liquid refrigerating system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674667A (en) * | 2016-03-25 | 2016-06-15 | 上海开山冷冻系统技术有限公司 | Efficient liquid cooling system and method |
| CN106766410A (en) * | 2017-02-14 | 2017-05-31 | 南京佳力图机房环境技术股份有限公司 | A kind of fluorine pump kind of refrigeration cycle assignment of traffic unit |
| CN110160297A (en) * | 2019-03-20 | 2019-08-23 | 广东雪源制冰设备有限公司 | Ice cube maker assists liquid-supplying system and ice cube maker |
| CN110243103A (en) * | 2019-07-14 | 2019-09-17 | 苏州奥德机械有限公司 | A kind of barrel pump circulation high/low temperature liquid circulation Precise Temperature Control System |
-
2015
- 2015-09-16 CN CN201520722166.4U patent/CN205066261U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674667A (en) * | 2016-03-25 | 2016-06-15 | 上海开山冷冻系统技术有限公司 | Efficient liquid cooling system and method |
| CN105674667B (en) * | 2016-03-25 | 2018-03-20 | 上海开山冷冻系统技术有限公司 | A kind of efficient liquid-cooling system and method |
| CN106766410A (en) * | 2017-02-14 | 2017-05-31 | 南京佳力图机房环境技术股份有限公司 | A kind of fluorine pump kind of refrigeration cycle assignment of traffic unit |
| CN110160297A (en) * | 2019-03-20 | 2019-08-23 | 广东雪源制冰设备有限公司 | Ice cube maker assists liquid-supplying system and ice cube maker |
| CN110243103A (en) * | 2019-07-14 | 2019-09-17 | 苏州奥德机械有限公司 | A kind of barrel pump circulation high/low temperature liquid circulation Precise Temperature Control System |
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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: 20160302 Termination date: 20170916 |