CN203518397U - Hot gas defrosting cooling system - Google Patents
Hot gas defrosting cooling system Download PDFInfo
- Publication number
- CN203518397U CN203518397U CN201320632329.0U CN201320632329U CN203518397U CN 203518397 U CN203518397 U CN 203518397U CN 201320632329 U CN201320632329 U CN 201320632329U CN 203518397 U CN203518397 U CN 203518397U
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- defrosting
- valve
- hot gas
- refrigeration
- control valve
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- 238000001816 cooling Methods 0.000 title claims abstract description 53
- 238000010257 thawing Methods 0.000 title claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000005057 refrigeration Methods 0.000 claims description 49
- 239000007788 liquid Substances 0.000 abstract description 11
- 238000007599 discharging Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 230000004087 circulation Effects 0.000 description 8
- 239000012530 fluid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
The utility model relates to a cooling system, in particular to a hot gas defrosting cooling system. The technical problem that a traditional cooling system is high in consumed energy in air cooler defrosting, and defrosting effect is not good is solved. A cooling unit comprises a first cooling control valve set, an evaporator, a second cooling control valve set and a compressor which are connected in sequence from the starting end to the tail end. A defrosting unit comprises a first defrosting control valve set, an equal-water disc, an evaporator and a second defrosting control valve set which are connected together in sequence from the starting end to the tail end. The cooling unit starting end is connected with a liquid storage device, a condenser, an oil tank and a compressor in sequence. The starting end and the tail end of the defrosting unit are connected with a liquid discharging barrel which is connected with the liquid storage device through a liquid discharging branch. The liquid discharging barrel is connected with the compressor through an evacuating branch. The liquid discharging barrel is connected with the liquid storage device through a balance branch. The hot gas defrosting cooling system can avoid the problem that a traditional hot gas defrosting cooling system is low in cooling coefficient.
Description
Technical field
The utility model relates to a kind of refrigeration system, is specifically related to a kind of hot gas defrosting refrigeration system.
Background technology
In recent years, along with China's expanding economy, the construction of medium and small freezer was more and more.Cooling device---air-cooler used in freezer,, compact conformation little with its floor space, simple to operate, heat transfer efficiency advantages of higher and adopted in a large number.But in air-cooler defrosting, but have very large drawback, because existing air-cooler defrosting mode adopts traditional motor heat defrosting, electrical heating produces radiant heat and melts frost layer, and the drainpipe of defrosting water in air-cooler flows out outside storehouse.The shortcoming of this method is: the power that defrosting system consumes is larger, and electric heating system element is many, defrosts insufficient, thereby the reliability of product, security are reduced.In actual conditions, tend to cause temperature fluctuation in storehouse larger, and electrical heating elements is often blown, causes defrosting system to be destroyed.
Water defrosting be exactly by liquid distribution to evaporator surface trickle, the heat that frost layer is brought by current is melted, from drainpipe, drain.But water defrosting waste water resource, and water needs water pump that water is poured on evaporimeter and just can complete defrosting, brings the loss of electric energy.
Hot gas defrost is exactly that the hot gas that compressor is discharged is introduced evaporimeter, and by evaporimeter, temporarily as " condenser ", the heat discharging while utilizing hot gas condensation, melts the frost layer of evaporator surface.
As shown in Figure 1, hot gas defrosting system of the prior art, during normal refrigeration, according to a → b → c → d → e → f → g → h → i → j → k → l → a, realize A road circularly cooling, according to a → b → c → d → e → f ' → g ' → h ' → i ' → j ' → k ' → l ' → a, realize B road circularly cooling; During defrost, circularly cooling A normally freezes on road, defrost circulation is realized according to m ' → n ' → o ' → p ' → j ' → q ' → r ' → s ' → f → g → h → i → j → k → l → a → b → m ' in circularly cooling B road, on the contrary circularly cooling B road normally freeze, circularly cooling A road defrost.Wherein, in defrost circulation, close stop valve e, the pressure decreased after stop valve e, the condensed fluid producing after circularly cooling B road defrost circulation enters circularly cooling A road pipeline through the refrigeration piping after stop valve e, realizes refrigeration.
In above system, because the condensing pressure of condenser will be higher than the pressure after hot gas defrost, the refrigeration piping that liquid after hot gas defrost will enter after stop valve e enters circulation, must close stop valve e(or adjustable cut-off valve e, make the pressure thereafter will be lower than the pressure of hot gas defrost), could realize circulation.No matter be, close stop valve e, or adjustable cut-off valve e, capital makes the refrigeration piping pressure decreased after stop valve e, cause the refrigeration piping after stop valve e can not realize full packages feed flow, both of these case all can reduce circularly cooling coefficient of refrigerating performance, relatively power consumption, does not realize truly energy-conservation of hot gas defrost.
Summary of the invention
The technical problems to be solved in the utility model is that traditional refrigeration system but exists power consumption large in air-cooler defrosting, and defrost effect is bad, for addressing the above problem, provides a kind of hot gas defrosting refrigeration system.
The technical solution of the utility model realizes in the following manner:
A kind of hot gas defrosting refrigeration system, comprise the circularly cooling circuit being formed by refrigeration unit and defrost unit, refrigeration unit is followed successively by first group of refrigeration control valve linking together, evaporimeter, second group of refrigeration control valve and compressor from top to end, defrost unit from top to end, be followed successively by first group of defrosting control valve linking together, etc. water pond, evaporimeter, second group of defrosting control valve, described refrigeration unit top is connected with reservoir, condenser, oil content tank and compressor in turn; The top of described defrost unit is all connected with discharge opeing bucket with end, and discharge opeing bucket is connected with reservoir by discharge opeing branch road, and discharge opeing bucket is connected with compressor by the branch road of finding time, and discharge opeing bucket is also connected with reservoir by balancing branch.
Described circularly cooling circuit comprises circularly cooling A road and circularly cooling B road, and circularly cooling A road and circularly cooling B road are comprised of a refrigeration unit and a defrost unit respectively.
Described first group of refrigeration control valve comprises connected successively stop valve, filter, magnetic valve, check valve, expansion valve, and second group of refrigeration control valve comprises connected successively magnetic valve, stop valve.
Described first group of defrosting control valve comprises stop valve, the magnetic valve being connected in turn, and second group of defrosting control valve comprises check valve, magnetic valve, the stop valve being connected in turn.
On described discharge opeing branch road, be provided with discharge opeing stop valve.
On the described branch road of finding time, be provided with and find time to use stop valve.
On described balancing branch, be provided with balance stop valve.
With respect to prior art, the utility model has increased discharge opeing bucket, make the condensed fluid that produces in hot gas defrost process be discharged to reservoir the inside by discharge opeing bucket safety, this part liquid participates in circularly cooling again, can avoid traditional hot gas defrost cooling system cooling ratio low, and when adopting multi-evaporator, can also realize wherein part evaporimeter defrosting, all the other evaporimeter refrigeration, can make full use of like this electric energy and other energy, can, in the minimum situation of power consumption, reach the object of maximum refrigeration.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art.
Fig. 2 is structure intention of the present utility model.
In figure, a is compressor, and b is oil content tank, and c is condenser, and d is reservoir, e, l, m, s, t, v, w, x, y, z are all stop valves, and f is filter, and g, k, n, r are all magnetic valves, and h, p, q are all check valves, i is expansion valve, and j is evaporimeter, and o waits water pond, and u is discharge opeing bucket.
The specific embodiment
As shown in Figure 2, a kind of hot gas defrosting refrigeration system, comprise the circularly cooling circuit being formed by refrigeration unit and defrost unit, circularly cooling circuit comprises circularly cooling A road and circularly cooling B road, and circularly cooling A road and circularly cooling B road are comprised of a refrigeration unit and a defrost unit respectively, refrigeration unit is followed successively by the first group of refrigeration control valve linking together from top to end, evaporimeter, second group of refrigeration control valve and compressor, defrost unit is followed successively by the first group of defrosting control valve linking together from top to end, Deng water pond, evaporimeter, second group of defrosting control valve, refrigeration unit top is connected with reservoir in turn, condenser, oil content tank and compressor, the top of defrost unit is all connected with discharge opeing bucket with end, and discharge opeing bucket is connected with reservoir by discharge opeing branch road, and discharge opeing bucket is connected with compressor by the branch road of finding time, and discharge opeing bucket is also connected with reservoir by balancing branch.First group of refrigeration control valve comprises connected successively stop valve, filter, magnetic valve, check valve, expansion valve, and second group of refrigeration control valve comprises connected successively magnetic valve, stop valve.Upper first group of defrosting control valve comprises stop valve, the magnetic valve being connected in turn, and second group of defrosting control valve comprises check valve, magnetic valve, the stop valve being connected in turn.On discharge opeing branch road, be provided with discharge opeing stop valve.Find time to be provided with and to find time to use stop valve on branch road.On above-mentioned balancing branch, be provided with balance stop valve.
Discharge opeing branch road refers to circuit: u → z → d; The branch road of finding time refers to circuit: u → w → a; Balancing branch refers to circuit: u → y → d.
The utility model course of work is as follows:
During normal refrigeration, according to a → b → c → d → e → f → g → h → i → j → k → l → a, realize A road circularly cooling, according to a → b → c → d → e → f ' → g ' → h ' → i ' → j ' → k ' → l ' → a, realize B road circularly cooling.
During defrost, circularly cooling A normally freezes on road, and circularly cooling B realizes on road in the following manner:
First find time to circulate: close magnetic valve g ' for feed flow, open magnetic valve k ' for return-air, shut electromagnetic valve n ' and magnetic valve r ', realize finding time of evaporimeter j ', and its circuit is: j ' → k ' → l ' → a; The stop valve w finding time on branch road that simultaneously opens discharge opeing bucket, closes stop valve v, x, y, z, realizes finding time of discharge opeing bucket, and its circuit is: u → w → a.These two circulations of finding time are all to prepare for lower step realizes defrost.
Secondly defrost circulation: close magnetic valve g ' and magnetic valve k ' for return-air for feed flow, open magnetic valve n ' and discharge opeing magnetic valve r ' for hot gas, open the stop valve v above discharge opeing bucket u simultaneously, close stop valve valve w, x, y, z, realize defrost circulation.Its circuit is: t → m ' → n ' → o ' → p ' → j ' → q ' → r ' → s ' → v → u.Realize the condensed fluid producing in defrost process and be all discharged to discharge opeing bucket the inside.
The 3rd is that evaporimeter drips, and closes magnetic valve n ' and discharge opeing magnetic valve r ' for hot gas on above-mentioned basis, allows the defrosting water above evaporator fin flow to end.
The 4th is discharge opeing bucket balance, opens the balance stop valve y on discharge opeing bucket balancing branch, realizes discharge opeing bucket the inside pressure and reservoir the inside and presses equilibrium of forces (pressure of reservoir the inside will higher than the pressure of discharge opeing bucket the inside).
The 5th is the discharge opeing of discharge opeing bucket, opens the discharge opeing stop valve z on discharge opeing bucket discharge opeing branch road, and the condensed fluid of discharge opeing bucket the inside is discharged in reservoir.
The 6th is circularly cooling, opens magnetic valve g ' and return-air magnetic valve k ' for feed flow, and shut electromagnetic valve n ', r ', close stop valve v, w, x, y, z, and the liquid that discharge opeing bucket is discharged to reservoir the inside just can participate in circularly cooling completely.
When normally freeze in circularly cooling B road, defrost is carried out on circularly cooling A road in the manner described above, how can make different circuit refrigeration, defrost carry out simultaneously.
The utility model can also increase the quantity of circularly cooling circuit, can realize wherein part circularly cooling circuit defrosting, all the other circularly cooling circuit refrigeration.
Claims (7)
1. a hot gas defrosting refrigeration system, comprise the circularly cooling circuit being formed by refrigeration unit and defrost unit, refrigeration unit is followed successively by first group of refrigeration control valve linking together, evaporimeter, second group of refrigeration control valve and compressor from top to end, defrost unit from top to end, be followed successively by first group of defrosting control valve linking together, etc. water pond, evaporimeter, second group of defrosting control valve, it is characterized in that: described refrigeration unit top is connected with reservoir, condenser, oil content tank and compressor in turn; The top of described defrost unit is all connected with discharge opeing bucket with end, and discharge opeing bucket is connected with reservoir by discharge opeing branch road, and discharge opeing bucket is connected with compressor by the branch road of finding time, and discharge opeing bucket is also connected with reservoir by balancing branch.
2. hot gas defrosting refrigeration system according to claim 1, is characterized in that: described circularly cooling circuit comprises circularly cooling A road and circularly cooling B road, and circularly cooling A road and circularly cooling B road are comprised of a refrigeration unit and a defrost unit respectively.
3. hot gas defrosting refrigeration system according to claim 2, it is characterized in that: described first group of refrigeration control valve comprises connected successively stop valve, filter, magnetic valve, check valve, expansion valve, and second group of refrigeration control valve comprises connected successively magnetic valve, stop valve.
4. hot gas defrosting refrigeration system according to claim 2, it is characterized in that: described first group of defrosting control valve comprises stop valve, the magnetic valve being connected in turn, second group of defrosting control valve comprises check valve, magnetic valve, the stop valve being connected in turn.
5. hot gas defrosting refrigeration system according to claim 2, is characterized in that: on described discharge opeing branch road, be provided with discharge opeing stop valve.
6. hot gas defrosting refrigeration system according to claim 2, is characterized in that: described in find time to be provided with and to find time to use stop valve on branch road.
7. hot gas defrosting refrigeration system according to claim 2, is characterized in that: on described balancing branch, be provided with balance stop valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320632329.0U CN203518397U (en) | 2013-10-14 | 2013-10-14 | Hot gas defrosting cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320632329.0U CN203518397U (en) | 2013-10-14 | 2013-10-14 | Hot gas defrosting cooling system |
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| CN203518397U true CN203518397U (en) | 2014-04-02 |
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| CN201320632329.0U Expired - Lifetime CN203518397U (en) | 2013-10-14 | 2013-10-14 | Hot gas defrosting cooling system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737470A (en) * | 2016-03-10 | 2016-07-06 | 济南欧菲特制冷设备有限公司 | Defrosting device for refrigeration system |
| CN106766438A (en) * | 2017-01-27 | 2017-05-31 | 广州市粤联水产制冷工程有限公司 | A kind of gradual fluid-discharge method |
| CN106802038A (en) * | 2017-01-27 | 2017-06-06 | 广州市粤联水产制冷工程有限公司 | A kind of hot gas defrosting method, hot gas defrosting and refrigerating and circulating method |
| CN106839544A (en) * | 2017-01-27 | 2017-06-13 | 广州市粤联水产制冷工程有限公司 | Defrosting system by superheated vapour |
| CN108981241A (en) * | 2018-09-17 | 2018-12-11 | 天津商业大学 | A kind of fin top row bundled tube freezer evaporator and its defrosting water collecting device |
-
2013
- 2013-10-14 CN CN201320632329.0U patent/CN203518397U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737470A (en) * | 2016-03-10 | 2016-07-06 | 济南欧菲特制冷设备有限公司 | Defrosting device for refrigeration system |
| CN106766438A (en) * | 2017-01-27 | 2017-05-31 | 广州市粤联水产制冷工程有限公司 | A kind of gradual fluid-discharge method |
| CN106802038A (en) * | 2017-01-27 | 2017-06-06 | 广州市粤联水产制冷工程有限公司 | A kind of hot gas defrosting method, hot gas defrosting and refrigerating and circulating method |
| CN106839544A (en) * | 2017-01-27 | 2017-06-13 | 广州市粤联水产制冷工程有限公司 | Defrosting system by superheated vapour |
| CN106766438B (en) * | 2017-01-27 | 2019-04-19 | 广州市粤联水产制冷工程有限公司 | A kind of gradual fluid-discharge method |
| CN106802038B (en) * | 2017-01-27 | 2019-09-13 | 广州市粤联水产制冷工程有限公司 | A kind of hot gas defrosting method, hot gas defrosting and refrigerating and circulating method |
| CN106839544B (en) * | 2017-01-27 | 2022-11-01 | 广州市粤联水产制冷工程有限公司 | Hot gas defrosting system |
| CN108981241A (en) * | 2018-09-17 | 2018-12-11 | 天津商业大学 | A kind of fin top row bundled tube freezer evaporator and its defrosting water collecting device |
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