CN202581634U - Dual-cold-source refrigerating system device - Google Patents
Dual-cold-source refrigerating system device Download PDFInfo
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- CN202581634U CN202581634U CN 201220186746 CN201220186746U CN202581634U CN 202581634 U CN202581634 U CN 202581634U CN 201220186746 CN201220186746 CN 201220186746 CN 201220186746 U CN201220186746 U CN 201220186746U CN 202581634 U CN202581634 U CN 202581634U
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Abstract
The utility model provides a dual-cold-source refrigerating system device, which belongs to the technical field of machinery and solves the problem of huge electricity consumption of the conventional refrigerating system adopting a single-compressor refrigerating device. The dual-cold-source refrigerating system device comprises an indoor water-fluorine heat exchanger, an indoor compressor, an outdoor condenser and an indoor restricting element which are orderly communicated with one another by a circulation pipe in series. The water-fluorine heat exchanger, the compressor, the condenser and the restricting element are connected with one another in a ring-closed shape to form a first refrigerating loop; the water-fluorine heat exchanger is orderly connected with an indoor surface cooler 1, an indoor water pump and an outdoor surface cooler 2 in series through a circulation pipe; and the water-fluorine heat exchanger, the surface cooler 1, the water pump and the surface cooler 2 are connected with one another in another ring-closed shape to form a second refrigerating loop. The dual-cold-source refrigerating system device reduces the runtime of the compressor, the device performance is maintained, the service life of the device is prolonged, the consumption of energy is remarkably reduced, and simultaneously, the device is environment-friendly and ecological.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of refrigeration system, particularly a kind of pair of low-temperature receiver refrigeration system equipment.
Background technology
Along with the continuous marked improvement of society, the raising of its productivity becomes a sign that country is prosperous and powerful with the high development of science and technology.Under contemporary society's current political situation situation, building and developing the large scale industry production scale becomes unified trend and important core in the production field of all trades and professions.Arising at the historic moment along with various supporting main equipments and base station thus; And those equipment work of changing a job of not stopping transport at all seasons usually, nature will produce a large amount of heats under the energy constantly consumes, thus this heat causes corresponding production equipment and the residing environment of equipment constantly to heat up; But the condition of high temperature has directly influenced the normal operation of production equipment and the quality assurance of equipment self; Thereby cause operating efficiency to reduce, product quality descends, and reduces the production interests thus; Also there is potential safety hazard under this condition of high temperature simultaneously.So in order to get rid of the problems referred to above, must continue cooling, just introduce the refrigeration system that can play this effect to production equipment.
Generally be to utilize Principle of Compressor Refrigeration and device to lower the temperature at present to production equipment; It mainly comprises evaporimeter, condenser, compressor and choke valve four big imperative equipment and elements; Wherein compressor is a heart, plays a part suction, compression, refrigerant conveying steam.Principle is for accomplishing a kind of refrigeration cycle through pervaporation, compression, condensation, four basic processes of throttling through the cold-producing medium in the loop in system.Because production equipment needs the cooling of continuation; So the compression mechanism device for cooling is continuous firing in the whole year equally; The power of first number compressor is maximum in whole refrigerating plant, and it need consume a large amount of electric energy like this, and in the society of energy scarcity at present; For complying with the STRATEGIES OF SUSTAINABLE DEVELOPMENT policy, how when not influencing productivity effect, can reach saves energy and reduce the cost is one of vital task of we each member of society.
The utility model content
The purpose of the utility model is to have the problems referred to above to existing technology; Proposed a kind of through setting up to two low-temperature receivers; One of which is the motor compressor low-temperature receiver, and another is a natural cooling source, so in the whole year, comply with extraneous different temperatures; Make two kinds of low-temperature receivers correspond to three kinds of state mating reactions and carry out refrigeration cool-down, reach energy-saving and cost-reducing, environmental and ecological two low-temperature receiver refrigeration system equipment thus.
The purpose of the utility model can realize through following technical proposal: a kind of pair of low-temperature receiver refrigeration system equipment; Comprise that being connected in series connection successively by the circulation pipeline is positioned at indoor water fluorine heat exchanger; Be positioned at indoor compressor; Be positioned at outdoor condenser and be positioned at indoor restricting element; And above-mentioned water fluorine heat exchanger, compressor, condenser and restricting element are a ring and close shape and is connected and forms first refrigerating circuit, it is characterized in that, also are connected in series connection successively through the circulation pipeline on the described water fluorine heat exchanger and are positioned at indoor surface cooler one; Be positioned at indoor water pump and be positioned at outdoor surface cooler two; And above-mentioned water fluorine heat exchanger, surface cooler one, water pump and surface cooler two are another ring and close shape and be connected and form second refrigerating circuit, connect in described second refrigerating circuit be provided with one have 1 ', 2 ', a 3 ' bit port electric T-shaped valve, 2 ' bit port of said electric T-shaped valve is communicated with above-mentioned water fluorine heat exchanger through the circulation pipeline; Its 1 ' bit port is communicated with above-mentioned water pump through the circulation pipeline, and its 3 ' bit port is communicated with above-mentioned surface cooler two through the circulation pipeline.
Each single devices in this pair of low-temperature receiver refrigeration system equipment all is connected to form the path of sealing through the circulation pipeline, and the connector place of circulation pipeline and each equipment is arranged with sealing ring.Wherein a pair of turnover connector of water fluorine heat exchanger is for supplying the path of cold-producing medium (being fluorine) circulation; Its another be the but logical path of current of cooling to the turnover connector; And both are arranged in parallel by path; Do not intersect port (be cold-producing medium and have and independently encircle the enclosed stream, cooling water has and independently encircles the enclosed stream, and both do not blend) in any section circulation pipeline.
When outdoor dry-bulb temperature is higher than 15 ℃; The equipment room environment temperature be higher than setting require temperature the time; Open 1 ' of electric T-shaped valve-2 ' position; Close for 2 '-3 ', compressor, indoor fan, outdoor fan, water pump energising operation adopt compressor mechanical refrigeration principle to realize the refrigeration cool-down effect this moment; When outdoor dry-bulb temperature is lower than 5 ℃; The equipment room environment temperature be higher than setting require temperature the time; 1 ' of electric T-shaped valve-2 ' position is closed, and opens water pump, indoor fan, outdoor fan energising operation for 2 '-3 '; And compressor quits work, and adopts this moment the outside natural cooling source to realize the refrigeration cool-down effect; When outdoor dry-bulb temperature greater than 5 ℃; Be lower than 15 ℃; The equipment room environment temperature be higher than setting require temperature the time, 1 ' of electric T-shaped valve-2 ' position is closed, and opens for 2 '-3 '; Compressor, water pump, indoor fan, outdoor fan energising operation adopt compressor mechanical refrigeration to add that the natural cooling source refrigeration realizes the refrigeration cool-down effect jointly this moment.
In above-mentioned two low-temperature receiver refrigeration system equipment, describedly be positioned at outdoor condenser outside through being electrically connected with outdoor fan.When condenser operates; The outdoor fan forced air convection; Make cold-producing medium and outdoor gas at normal temperature in the condenser fully carry out the contact heat exchange, impel the vapor phase refrigerant heat release of HTHP this moment to be condensed into highly pressurised liquid, improve its liquid-phase conversion rate and exothermal efficiency.
In above-mentioned two low-temperature receiver refrigeration system equipment, described indoor surface cooler one outside that is positioned at is through being electrically connected with indoor fan.When surface cooler one running, the indoor fan forced air convection makes the low-temperature cooling water in the surface cooler one fully carry out the contact heat exchange with indoor high-temperature gas, impels the cooling water heat absorption to heat up, the raising heat absorption efficiency.
In above-mentioned two low-temperature receiver refrigeration system equipment, described outdoor surface cooler two outsides that are positioned at are through being electrically connected with outdoor fan.When surface cooler two runnings; The outdoor fan forced air convection makes high-temperature water and outdoor low temperature air in the surface cooler two fully carry out the contact heat exchange, impels high-temperature water heat release cooling; Improve exothermal efficiency, thereby be the cooling water heat absorption preparation after the follow-up cooling.
In above-mentioned two low-temperature receiver refrigeration system equipment, described surface cooler one is the finned surface cooler in water route with surface cooler two.
In above-mentioned two low-temperature receiver refrigeration system equipment, described first refrigerating circuit and second refrigerating circuit are through being electrically connected the outer assembly controller that is provided with.Assembly controller is modernized computer equipment; It is through the open and close of the equipment such as compressor, water pump, indoor fan and outdoor fan in software program whole control first refrigerating circuit and second refrigerating circuit; Thereby the different temperatures of corresponding extraneous weather under these assembly controller regulation and control; Realize the different modes mating reaction of first refrigerating circuit and second refrigerating circuit, reach the continuous and effective refrigeration jointly.
In above-mentioned two low-temperature receiver refrigeration system equipment, described runner pipe route copper pipe and water pipe amalgamation welding form.Between water fluorine heat exchanger, compressor, condenser and the restricting element, perhaps can be communicated with by conventional assembly technology welding through copper pipe and water pipe between water fluorine heat exchanger, surface cooler one, water pump, surface cooler two and the electric T-shaped valve in second refrigerating circuit in first refrigerating circuit.
Compared with prior art, this pair low-temperature receiver refrigeration system equipment adopts three kinds of mating reaction modes of first refrigerating circuit and second refrigerating circuit, realizes that two low-temperature receivers of compressor mechanical refrigeration system and natural cooling source heat exchange refrigeration system are coordinated refrigeration each other.In outdoor temperature lower season, can utilize cooling circulating water and natural cooling source to carry out heat exchange merely thus, realize the purpose of refrigeration cool-down; In outdoor temperature not too high season, can use natural cooling source heat exchange and compressor cooling acting in conjunction, realize the purpose of refrigeration cool-down.Thereby significantly reduce expending of the energy, reduce production costs, reduce heat exhaust simultaneously, and environmental and ecological; Reduced the running time of equipment such as compressor,, prolonged its service life so safeguarded the equipment performance of whole mechanical refrigeration system simultaneously.
Description of drawings
Fig. 1 is the planar structure sketch map of this pair low-temperature receiver refrigeration system equipment.
Among the figure, 1, the circulation pipeline; 2, water fluorine heat exchanger; 3, compressor; 4, condenser; 5, restricting element; 6, surface cooler one; 7, water pump; 8, surface cooler two; 9, electric T-shaped valve; 10, outdoor fan; 11, indoor fan.
The specific embodiment
Below be the specific embodiment of the utility model and combine accompanying drawing, the technical scheme of the utility model is done further to describe, but the utility model is not limited to these embodiment.
As shown in Figure 1, this pair low-temperature receiver refrigeration system equipment comprises makes first refrigerating circuit that cold-producing medium (being fluorine) flows through and second refrigerating circuit that makes the cooling water flow warp, and does not make the port that intersects that both conflux between refrigerant flow path and the cooling water stream.First refrigerating circuit and second refrigerating circuit include a part and are positioned at indoor plant equipment and are positioned at outdoor plant equipment with a part.
The turnover connector that has two pairs of connections on the water fluorine heat exchanger 2; Turnover connector the path for supply cold-producing medium (be fluorine) circulate of one of which to being communicated with; Its another be the but logical path of current of cooling to the turnover connector that is communicated with, and both paths are arranged in parallel, and does not intersect port.
Be positioned on the indoor water fluorine heat exchanger 2; Be sealedly connected with circulation pipeline 1 on the inlet and outlet connectors by its cold-producing medium circulation; Behind the circulation pipeline 1 that wherein connects from the cold-producing medium outgoing interface successively serial connection be communicated with and be positioned at indoor compressor 3, be positioned at outdoor condenser 4 and be positioned at indoor restricting element 5, then connect the cold-producing medium accessing port of water fluorine heat exchanger 2; Form the ring closed cycle loop of cold-producing medium, this loop is first refrigerating circuit.Be positioned at outdoor condenser 4 outsides through being electrically connected with outdoor fan 10.
Be sealedly connected with circulation pipeline 1 on the inlet and outlet connectors by the circulation of the cooling water of indoor water fluorine heat exchanger 2; Behind the circulation pipeline 1 that wherein connects from the cooling water outgoing interface successively serial connection be communicated with and be positioned at indoor surface cooler 1, be positioned at indoor water pump 7 and be positioned at outdoor surface cooler 28.The latter linked circulation pipeline 1 of surface cooler 28 outlet be provided with one have 1 ', 2 ', a 3 ' bit port electric T-shaped valve 9; And surface cooler 28 outlets are communicated with 3 ' bit port of electric T-shaped valve 9 through circulation pipeline 1; 2 ' bit port of electric T-shaped valve 9 is through the cooling water accessing port of circulation pipeline 1 connection water fluorine heat exchanger 2, and its 1 ' bit port directly is communicated with water pump 7 through circulation pipeline 1.The ring closed cycle loop of the cooling water that forms thus is second refrigerating circuit; In second refrigerating circuit; If 1 '-2 ' of electric T-shaped valve 9 is opened; Close for 2 '-3 ', water fluorine heat exchanger 2 is then directly got back to promptly for by water fluorine heat exchanger 2 to surface cooler 1 to water pump 7 in the loop of flowing through of cooling water; If 1 '-2 ' of electric T-shaped valve 9 is closed, to open for 2 '-3 ', water fluorine heat exchanger 2 is then got back to promptly for by water fluorine heat exchanger 2 to surface cooler 1 to water pump 7 to surface cooler 28 in the loop of flowing through of cooling water.
Surface cooler 1 is the finned surface cooler in water route with surface cooler 28.Surface cooler one 6 outsides are through being electrically connected with indoor fan 11, and surface cooler 28 outsides are through being electrically connected with outdoor fan 10.
Each single devices in first refrigerating circuit and second refrigerating circuit all is connected to form the path of sealing through circulation pipeline 1, and the connector place of circulation pipeline 1 and each equipment is arranged with sealing ring.First refrigerating circuit and second refrigerating circuit are through being electrically connected the outer assembly controller that is provided with; This assembly controller is modernized computer equipment; It is through the whole open and close of controlling the equipment such as compressor 3, water pump 7, indoor fan 11 and outdoor fan 10 in first refrigerating circuit and second refrigerating circuit of software program, thereby water pump 7 or multiple control methods such as while compressor and starting 3 and water pump 7 are opened in realization separately.
In first refrigerating circuit between water fluorine heat exchanger 2, compressor 3, condenser 4 and the restricting element 5; Perhaps the circulation pipeline 1 between water fluorine heat exchanger 2, surface cooler 1, water pump 7, surface cooler 28 and the electric T-shaped valve 9 can be communicated with by conventional assembly technology welding through copper pipe and water pipe in second refrigerating circuit; Be easy to processing thus and realize having the assembling generality.
Be positioned over visual plants such as compressor 3, water fluorine heat exchanger 2, water pump 7 indoor in this single unit system; Improved the working environment of those equipment thus; Prevent it by weathering corrosion or the back running of enduring cold is bad or pilferage etc. possibly damage, so guarantee its operating efficiency, action effect and increase the service life.
When outdoor dry-bulb temperature is higher than 15 ℃; The equipment room environment temperature be higher than setting require temperature the time; Open for 1 '-2 ' of electric T-shaped valve 9 in second refrigerating circuit, close for 2 '-3 ', assembly controller starts compressor 3 and water pump 7 simultaneously; Indoor fan 11, outdoor fan 10 energising operations realize compressor 3 mechanical refrigeration effects.Liquid refrigerant in first refrigerating circuit to the cooling water heat absorption, cooling water temperature is reduced significantly, and cold-producing medium self is vaporized into the steam of low-temp low-pressure in water fluorine heat exchanger 2; Then the vapor phase refrigerant of low-temp low-pressure is compressed machine 3 suctions, and is compressed into the steam of HTHP; Enter subsequently and be arranged in outdoor condenser 4; Thereby the vapor phase refrigerant of HTHP is condensed into highly pressurised liquid to the outdoor air heat release in condenser 4; Outdoor fan 10 moves forced air convection simultaneously; Make cold-producing medium and outdoor gas at normal temperature in the condenser 4 fully carry out the contact heat exchange, be beneficial to the liquid-phase conversion rate and the exothermal efficiency that improve cold-producing medium, make it improve follow-up required endothermic potential; Then the liquid phase refrigerant of cryogenic high pressure is the liquid phase refrigerant of low-temp low-pressure through restricting element 5 throttlings, thereby gets into 2 pairs of cooling water temperatures of water fluorine heat exchanger once more.In second refrigerating circuit cooling water in water fluorine heat exchanger 2 by after the cold-producing medium cooling; Driving entering through water pump 7 is positioned at indoor surface cooler 1; Indoor fan 11 operates forced air convection simultaneously, makes low-temperature cooling water and indoor high-temperature gas in the surface cooler 1 fully carry out the contact heat exchange, impels the cooling water heat absorption to heat up; Effectively improve heat absorption efficiency, realize cooling of room air; Cooling water after then heating up becomes the high temperature circulation current through water pump 7; Through electric T-shaped valve 91 '-2 ' directly enters in the water fluorine heat exchanger 2 and carries out mechanical refrigeration again; Realize that thus compressor 3 mechanical systems freeze to cooling water, again through the purpose of cooling water with air heat exchange realization refrigeration cool-down.
When outdoor dry-bulb temperature is lower than 5 ℃; The equipment room environment temperature be higher than setting require temperature the time; Close for 1 '-2 ' of electric T-shaped valve 9 in second refrigerating circuit, open for 2 '-3 ', assembly controller only starts water pump 7; Indoor fan 11, outdoor fan 10 energising operations adopt the outside natural cooling source to realize the refrigeration cool-down effect.Compressor 3 in first refrigerating circuit quits work, so the cold-producing medium in the loop does not carry out refrigeration.Low-temperature cooling water in second refrigerating circuit is through the power drive of water pump 7; Process surface cooler 1 in the circulation pipeline 1 of sealing; Indoor fan 11 operates forced air convection simultaneously, makes low-temperature cooling water and indoor high-temperature gas in the surface cooler 1 fully carry out the contact heat exchange, impels the cooling water heat absorption to heat up; Effectively improve heat absorption efficiency, realize cooling of room air; Cooling water after then heating up becomes the high temperature circulation current through water pump 7; Be drained into and be positioned at outdoor surface cooler 28; Running forced air convection in the time of through outdoor fan 10; Make high temperature circulation water and outdoor low temperature air in the surface cooler 28 fully carry out the contact heat exchange, impel high-temperature water heat release cooling, become low-temperature cooling water; 3 '-2 ' bit stream that cooling water passes through electric T-shaped valve 9 again flows into surface cooler 1 once more and realizes the circularly coolings cooling through water fluorine heat exchanger 2.Because water pump 7 power are far smaller than compressor 3 power, therefore under this kind operating mode, significantly reduce the operation of compressor 3 mechanical refrigeration systems, thereby reduce electric quantity consumption and safeguard the equipment performance of compressor 3 mechanical refrigeration systems, prolong its service life.
When outdoor dry-bulb temperature greater than 5 ℃; Be lower than 15 ℃, the equipment room environment temperature be higher than setting require temperature the time, close for 1 '-2 ' of the electric T-shaped valve 9 in second refrigerating circuit; Open for 2 '-3 '; Assembly controller starts compressor 3 and water pump 7 simultaneously, and indoor fan 11, outdoor fan 10 energising operations adopt compressor 3 mechanical refrigerations to add that the natural cooling source refrigeration realizes the refrigeration cool-down effect jointly thus.Intensification chilled water in second refrigerating circuit is in surface cooler 28; Under the effect of outdoor fan 10, carry out sufficient contact heat exchange, impel the cooling water temperature after the intensification, realize its preliminary precooling with outside air; Cooling water after the precooling is through 3 '-2 ' bit stream entry fluorine heat exchanger 2 of electric T-shaped valve 9; Cold-producing medium is under the running effect of compressor 3 in first refrigerating circuit simultaneously, and the cooling water after 2 pairs of precoolings of lasting entering water fluorine heat exchanger is further lowered the temperature, and then the cooling water of enough low temperature gets into surface cooler 1 under water pump 7 drives; Through indoor fan 11 effects; Low-temperature cooling water fully carries out the contact heat exchange with indoor high-temperature gas in surface cooler 1, reach the heat release cooling of heat absorption intensification and the room air of cooling water, until the refrigeration required standard that meets the requirements; Effect back cooling water is through water pump 7, and circular flow is gone in the outdoor surface cooler 28 once more.Because the cooling water after adopting extraneous natural cooling source to effect carries out precooling, thereby has reduced the energy that compressor 3 mechanical refrigeration systems are consumed, and realizes energy-saving and emission-reduction.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from the spirit of the utility model or surmount the defined scope of appended claims.
Although this paper has used circulation pipeline 1 morely; Water fluorine heat exchanger 2; Compressor 3; Condenser 4; Restricting element 5; Surface cooler 1; Water pump 7; Surface cooler 28; Electric T-shaped valve 9; Outdoor fan 10; Indoor fan 11 terms such as grade, but do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain the essence of the utility model more easily; It all is contrary with the utility model spirit being construed to any additional restriction to them.
Claims (7)
1. two low-temperature receiver refrigeration system equipment; Comprise that being connected in series connection successively by the circulation pipeline is positioned at indoor water fluorine heat exchanger; Be positioned at indoor compressor, be positioned at outdoor condenser and be positioned at indoor restricting element, and above-mentioned water fluorine heat exchanger, compressor, condenser and restricting element are a ring and close shape and be connected and form first refrigerating circuit; It is characterized in that; Also be connected in series successively to be communicated with on the described water fluorine heat exchanger and be positioned at indoor surface cooler one, be positioned at indoor water pump and be positioned at outdoor surface cooler two, and above-mentioned water fluorine heat exchanger, surface cooler one, water pump and surface cooler two are another ring and close shape and be connected and form second refrigerating circuit through the circulation pipeline; Connect in described second refrigerating circuit be provided with one have 1 ', 2 ', a 3 ' bit port electric T-shaped valve; 2 ' bit port of said electric T-shaped valve is communicated with above-mentioned water fluorine heat exchanger through the circulation pipeline, and its 1 ' bit port is communicated with above-mentioned water pump through the circulation pipeline, and its 3 ' bit port is communicated with above-mentioned surface cooler two through the circulation pipeline.
2. according to claim 1 pair of low-temperature receiver refrigeration system equipment is characterized in that, describedly is positioned at outdoor condenser outside through being electrically connected with outdoor fan.
3. according to claim 1 pair of low-temperature receiver refrigeration system equipment is characterized in that, described indoor surface cooler one outside that is positioned at is through being electrically connected with indoor fan.
4. according to claim 1 pair of low-temperature receiver refrigeration system equipment is characterized in that, described outdoor surface cooler two outsides that are positioned at are through being electrically connected with outdoor fan.
5. according to claim 1 or 3 or 4 described pairs of low-temperature receiver refrigeration system equipment, it is characterized in that described surface cooler one is the finned surface cooler in water route with surface cooler two.
6. according to arbitrary described pair low-temperature receiver refrigeration system equipment in the claim 1 to 4, it is characterized in that described first refrigerating circuit and second refrigerating circuit are through being electrically connected the outer assembly controller that is provided with.
7. according to arbitrary described pair low-temperature receiver refrigeration system equipment in the claim 1 to 4, it is characterized in that described runner pipe route copper pipe and water pipe amalgamation welding form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220186746 CN202581634U (en) | 2012-04-27 | 2012-04-27 | Dual-cold-source refrigerating system device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220186746 CN202581634U (en) | 2012-04-27 | 2012-04-27 | Dual-cold-source refrigerating system device |
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| Publication Number | Publication Date |
|---|---|
| CN202581634U true CN202581634U (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220186746 Expired - Lifetime CN202581634U (en) | 2012-04-27 | 2012-04-27 | Dual-cold-source refrigerating system device |
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| CN (1) | CN202581634U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990296A (en) * | 2015-07-13 | 2015-10-21 | 重庆美的通用制冷设备有限公司 | Refrigerating system |
| CN106016465A (en) * | 2016-06-29 | 2016-10-12 | 四川依米康环境科技股份有限公司 | Variable frequency fluorine pump air conditioner |
-
2012
- 2012-04-27 CN CN 201220186746 patent/CN202581634U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990296A (en) * | 2015-07-13 | 2015-10-21 | 重庆美的通用制冷设备有限公司 | Refrigerating system |
| CN106016465A (en) * | 2016-06-29 | 2016-10-12 | 四川依米康环境科技股份有限公司 | Variable frequency fluorine pump air conditioner |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |
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| CX01 | Expiry of patent term |