CN114111138A - Defrosting method of high-temperature air source heating system - Google Patents
Defrosting method of high-temperature air source heating system Download PDFInfo
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- CN114111138A CN114111138A CN202111309887.9A CN202111309887A CN114111138A CN 114111138 A CN114111138 A CN 114111138A CN 202111309887 A CN202111309887 A CN 202111309887A CN 114111138 A CN114111138 A CN 114111138A
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- air source
- heating system
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- 238000010257 thawing Methods 0.000 title claims abstract description 39
- 238000010438 heat treatment Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000009434 installation Methods 0.000 claims abstract description 22
- 238000003466 welding Methods 0.000 claims abstract description 22
- 239000000945 filler Substances 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000005498 polishing Methods 0.000 claims abstract description 8
- 238000005406 washing Methods 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 21
- 238000001704 evaporation Methods 0.000 claims description 9
- 230000008020 evaporation Effects 0.000 claims description 8
- 238000004321 preservation Methods 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 238000007710 freezing Methods 0.000 claims description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
Abstract
The invention relates to a defrosting method of a high-temperature air source heating system, which comprises the following steps: 1) treatment before installation: disassembling a compressor shell: polishing and removing welding fillers on the outer surface of the shell of the compressor, cleaning the fillers by using a polishing machine, and knocking the shell of the compressor into an upper part and a lower part by using a hammer after the fillers are cleaned; cleaning a compressor shell and fins: removing rusted parts on the inner side surface, the outer surface and the fin surface of the shell of the compressor, and washing away residual dirt by using clean water. According to the defrosting method of the high-temperature air source heating system, the compressor shell and the fins are treated before the capillary tube is installed, the treatment mode is careful, the rusty parts and dirt on the surfaces of the compressor shell and the fins are removed, the stability of capillary tube installation after welding is avoided, and the capillary tube is firstly welded after being embedded by arranging the grooves, so that the overall stability of welding installation is improved.
Description
Technical Field
The invention relates to the technical field of high-temperature air source heat supply, in particular to a defrosting method of a high-temperature air source heat supply system.
Background
The twin-screw compressor has a pair of rotors with helical teeth which are meshed with each other and have opposite rotation directions, the rotor with a convex tooth surface is called a male rotor, the rotor with a concave tooth surface is called a female rotor, the teeth of the rotors are equivalent to pistons, tooth spaces of the rotors, the inner wall surface of a machine body, end covers at two ends and the like jointly form a working volume, the working volume is equivalent to a cylinder, and the two ends of the machine body are provided with air suction and exhaust holes which are arranged in a diagonal line.
High temperature air source heating system's screw doublestage compressor is realizing becoming the gaseous in-process of high temperature high pressure to the continuous compression of working medium, has partly energy to give off with thermal form to pass to in the external environment through metal casing, so that energy is extravagant, air source high temperature heating system when winter low temperature environment moves down, the evaporimeter easily frosts, lead to the windage increase, evaporating temperature reduces, heat exchange efficiency reduces, the heating capacity reduces, present air source high temperature heating system evaporimeter defrosting mode has following several kinds: reverse cycle defrosting: the system changes the flow direction of the refrigerant by using the four-way reversing valve, the unit reversely runs, the superheated refrigerant gas discharged by the compressor is conveyed to the outdoor coil pipe for defrosting, and meanwhile, the indoor heat is absorbed, so that the influence on the heat supply comfort level is large; hot gas bypass defrosting: a bypass pipe and an electromagnetic valve are arranged on an exhaust pipeline of the compressor, the evaporator is defrosted, energy comes from the compressor, energy consumption is large in the defrosting process, and the system is not favorable to operation; energy storage and defrosting: an energy accumulator is additionally arranged in the system, partial heat is stored when the system operates, the defrosting effect is influenced by the heat storage amount, and the defrosting is not thorough under the condition of insufficient heat storage amount, so that the operating efficiency of equipment is influenced; electric heating defrosting: the heating wire is arranged on the surface of the heat exchanger, and the heating wire is electrified to heat and defrost, but the mode adopts high-grade electric energy, consumes more power and has certain potential safety hazard.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a defrosting method of a high-temperature air source heating system, which has the advantages of fully recovering heat, transferring the heat to fins for defrosting and the like, and solves the problems that when the conventional air source high-temperature heating system operates in a low-temperature environment in winter, an evaporator is easy to frost, so that the wind resistance is increased, the evaporation temperature is reduced, the heat exchange efficiency is reduced, and the heating capacity is reduced.
In order to achieve the purpose, the invention provides the following technical scheme: a defrosting method of a high-temperature air source heating system comprises the following steps:
1) treatment before installation:
disassembling a compressor shell: polishing and removing welding fillers on the outer surface of the shell of the compressor, cleaning the fillers by using a polishing machine, and knocking the shell of the compressor into an upper part and a lower part by using a hammer after the fillers are cleaned;
cleaning a compressor shell and fins: removing rusted parts on the inner side surface, the outer surface and the fin surface of the shell of the compressor, and washing away residual dirt by using clear water;
processing before installation of a capillary network: the method comprises the steps of measuring the outer diameter of a capillary tube to be installed, the overall size of a compressor shell and the surface size of fins, reasonably planning the grid arrangement of the capillary tube, and grooving the inner side surface and the outer surface of the compressor shell and corresponding positions of the fins by using a grooving tool.
2) Installation of the capillary: inlay the capillary in compressor housing medial surface and the recess of lateral surface with latticed mode of arranging, inlay the capillary in the recess to the fin outside with the U-shaped arrangement mode, through welded mode to capillary network and compressor housing to and capillary network and fin are fixed, wherein for preventing the capillary super heat, the capillary should be avoided to gas welding flame for capillary and recess lateral surface reach welding temperature simultaneously.
3) Installation of the heat preservation layer: the heat-insulating layer is attached to the outer portion of the compressor shell, and a capillary network located at the outer portion of the compressor shell is wrapped, so that heat loss is avoided.
4) Installation of a circulating pipeline: and the capillary networks positioned on the outer side and the inner side of the compressor shell are communicated with the capillary network positioned outside the fins by using a water supply pipe, and the middle section of the water supply pipe is communicated with the circulating water pump.
5) Filling of a solvent: and communicating the water return pipe with a capillary tube outside the fin in a direction opposite to the water supply pipe, filling an anti-freezing water solution into the water return pipe, communicating the other end of the water return pipe with the capillary tube network outside and inside the compressor shell, and additionally installing a drain valve on the water return pipe so as to form a circulation loop.
6) The circulation operation of the solution: and closing the drain valve, starting the circulating water pump, conveying the solution outside the compressor shell, which is positioned inside the capillary network, to the inside of the capillary network outside the evaporator fins, heating the evaporation fins for defrosting, and returning the heated solution to the inside of the capillary network outside the compressor shell through the water return pipe to finish circulating defrosting.
Further, the heat insulation layer wrapped on the surface of the capillary net in the step 3) is made of a polyurethane material, and the thickness of the heat insulation layer is 1 cm.
Further, a timing switch is arranged on the circulating water pump communicated with the water supply pipe in the step 4), and the timing switch is set to operate for twenty minutes every two hours in sequence when the main machine is idle.
Further, the liquid in the step 5) adopts an antifreezing aqueous solution, and the antifreezing aqueous solution does not freeze in the low-temperature environment outside the engine room.
Further, in the step 4), the capillary network is connected with the water supply pipe and the water return pipe through pipe column joints, the pipe column joints are made of copper, and the wall thickness is 5 mm.
Further, the depth of the groove in the step 1) is half of the outer diameter of the capillary, and the width of the groove is equal to the length of the outer diameter of the capillary.
Further, the capillary network is welded by laser welding in the step 2), the capillary needs to be preheated before welding, and the temperature of the welded pipeline is not more than 120 ℃.
Further, the surface of the compressor shell is subjected to rust removal in the step 1) by adopting physical rust removal, and the surface of the compressor shell is scrubbed by using a bristle brush to remove a rusted part.
Compared with the prior art, the technical scheme of the application has the following beneficial effects:
the defrosting method of the high-temperature air source heat supply system comprises the steps of treating a compressor shell and fins before capillary tubes are installed, wherein the treatment mode is delicate to remove rusty parts and dirt on the surfaces of the compressor shell and the fins to avoid the stability of capillary tubes after welding, the capillary tubes are firstly embedded and then welded by arranging grooves to improve the overall stability of welding installation, the loss of heat in the heat transfer process is reduced by wrapping a heat preservation layer, a timing switch is arranged on a circulating water pump, the solution in a pipe network is effectively prevented from freezing through the double-layer guarantee of an anti-freezing aqueous solution and the water pump, the safety of the pipe network is ensured, the full defrosting effect on the surfaces of the fins is achieved, the formation of frost is inhibited, a water supply pipe and a water return pipe are independent of the heat supply system, and the traditional defrosting technology is compared with the traditional defrosting technology, can improve the heating efficiency from heat without influencing the normal operation of the heating cycle in severe weather environment
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a defrosting method of a high-temperature air source heating system in the embodiment includes the following steps:
1) treatment before installation:
disassembling a compressor shell: polishing and removing welding fillers on the outer surface of the compressor shell, cleaning the fillers by using a polishing machine, so that the compressor shell can be disassembled for subsequent installation, and after cleaning, knocking the compressor shell apart by using a hammer to divide the compressor shell into an upper part and a lower part, wherein the hammer used must be a rubber hammer in order to avoid the deformation caused by hammering the compressor shell;
cleaning a compressor shell and fins: removing rusty parts on the inner side surface, the outer surface and the fin surface of the compressor shell in a physical rust removal mode, scrubbing the surface of the compressor shell and the fin surface by matching a hard brush with cleaning liquid, scraping the rusty parts, and then washing away residual dirt by using clear water, wherein the cleaned surfaces of the compressor shell and the fin need to be smooth and clean, and obvious dirt does not influence welding quality;
processing before installation of a capillary network: treat the capillary external diameter of installation, the overall dimension of compressor housing and the surface dimension of fin are measured, arrange the net of capillary and carry out the rational planning, use the fluting instrument at compressor housing's medial surface, the corresponding position fluting of surface and fin, it should satisfy the groove depth and be half of capillary external diameter to set up at the recess, the groove width is the same with capillary external diameter length, guarantee that half of capillary inlays to compressor housing and fin on the surface, make the installation stability between capillary and the compressor housing better, the efficiency of heat exchange can improve simultaneously.
2) Installation of the capillary: inlay the capillary with latticed mode of arranging to the recess in compressor housing medial surface and lateral surface, inlay the capillary to the recess in the fin outside with U-shaped arrangement, through welded mode to capillary network and compressor housing, and capillary network and fin are fixed, because the thermal capacity of capillary is very little, the super heat phenomenon appears easily, therefore its welding specifically adopts laser welding, wherein for preventing the capillary super heat, the capillary should be avoided to gas welding flame, make capillary and recess lateral surface reach welding temperature simultaneously, also can utilize a metal frame to centre gripping a thick copper sheet on the capillary, make the heat radiating area of capillary suitably increase, avoid the super heat phenomenon.
3) Installation of the heat preservation layer: the heat preservation laminating is outside compressor housing, wraps up the outside capillary network that is located compressor housing, wraps up the heat preservation on capillary network surface and adopts the polyurethane material, and thickness is 1cm, overlaps the outside at compressor housing through the mode cover that bonds with the heat preservation both ends for the heat preservation laminating avoids calorific loss at the surface of capillary.
4) Installation of a circulating pipeline: use the delivery pipe to be located the compressor housing outside and inboard capillary network and be located the outside capillary network of fin and be linked together, the intercommunication department uses the tubular column joint to connect, the tubular column joint material is copper, the wall thickness is 5mm, can stabilize the delivery pipe, simultaneously at delivery pipe middle section intercommunication circulating water pump, circulating water pump is used for driving the circulation to whole water circulating system's inside solution, and install the time switch on the circulating water pump, time switch sets for when having the host computer idle, the operation is in proper order every two hours, one-time operation twenty minutes, the first guarantee, prevent that the inside solution of water supply pipe from freezing under the influence of outside temperature in winter, cause the unable realization of defrosting circulation.
5) Filling of a solvent: the method comprises the steps of communicating a water return pipe with a capillary pipe outside a fin in the direction opposite to a water supply pipe, filling a solution into the water return pipe, wherein the solution adopts an anti-freezing aqueous solution which is not frozen in a low-temperature environment outside a motor room, serving as a dual guarantee, effectively avoiding the solution from being frozen under the dual guarantee, communicating the other end of the water return pipe with capillary pipe networks outside and inside a compressor shell, and additionally arranging a drain valve on the water return pipe, thereby forming a circulation loop, wherein the circulation loop is an annular closed loop and can circularly flow the solution filled in the loop, so that when a host runs in winter, the compressor emits waste heat, the solution in the capillary pipe networks is heated and is conveyed to the fin of an evaporator through a circulation water pump, the evaporation fin is heated and defrosted, and the normal running of a heating evaporation side is guaranteed.
6) The circulation operation of the solution: and closing the drain valve, starting the circulating water pump, conveying the solution outside the compressor shell, which is positioned inside the capillary network, to the inside of the capillary network outside the evaporator fins, heating the evaporation fins for defrosting, and returning the heated solution to the inside of the capillary network outside the compressor shell through the water return pipe to finish circulating defrosting.
The invention has the beneficial effects that: the waste heat generated by the compressor is transferred to the fins of the evaporator of the high-temperature air source heating system through the circulation of the solution in the capillary network, when the environmental temperature is lower than the dew point temperature of air, the fins are easy to frost, and after the capillary network circulation system is arranged, the frost can be fully removed and the formation of the frost can be inhibited, so that the heating efficiency is improved from heat without influencing the normal operation of the heating circulation in severe weather compared with the traditional defrosting technology; when the outdoor temperature is higher than the dew point temperature, the system does not need defrosting, the capillary network system operates normally, the effect of improving the temperature of an evaporation side can be achieved, the evaporation temperature is improved, the consumed work amount of the high-temperature air source host machine is reduced under the condition of obtaining the same heat, and the efficiency of the heat pump is further improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The defrosting method of the high-temperature air source heating system is characterized by comprising the following steps of:
1) treatment before installation:
disassembling a compressor shell: polishing and removing welding fillers on the outer surface of the shell of the compressor, cleaning the fillers by using a polishing machine, and knocking the shell of the compressor into an upper part and a lower part by using a hammer after the fillers are cleaned;
cleaning a compressor shell and fins: removing rusted parts on the inner side surface, the outer surface and the fin surface of the shell of the compressor, and washing away residual dirt by using clear water;
processing before installation of a capillary network: the method comprises the steps of measuring the outer diameter of a capillary tube to be installed, the overall size of a compressor shell and the surface size of fins, reasonably planning the grid arrangement of the capillary tube, and grooving the inner side surface and the outer surface of the compressor shell and corresponding positions of the fins by using a grooving tool.
2) Installation of the capillary: inlay the capillary in compressor housing medial surface and the recess of lateral surface with latticed mode of arranging, inlay the capillary in the recess to the fin outside with the U-shaped arrangement mode, through welded mode to capillary network and compressor housing to and capillary network and fin are fixed, wherein for preventing the capillary super heat, the capillary should be avoided to gas welding flame for capillary and recess lateral surface reach welding temperature simultaneously.
3) Installation of the heat preservation layer: the heat-insulating layer is attached to the outer portion of the compressor shell, and a capillary network located at the outer portion of the compressor shell is wrapped, so that heat loss is avoided.
4) Installation of a circulating pipeline: and the capillary networks positioned on the outer side and the inner side of the compressor shell are communicated with the capillary network positioned outside the fins by using a water supply pipe, and the middle section of the water supply pipe is communicated with the circulating water pump.
5) Filling of a solvent: and communicating the water return pipe with a capillary tube outside the fin in a direction opposite to the water supply pipe, filling an anti-freezing water solution into the water return pipe, communicating the other end of the water return pipe with the capillary tube network outside and inside the compressor shell, and additionally installing a drain valve on the water return pipe so as to form a circulation loop.
6) The circulation operation of the solution: and closing the drain valve, starting the circulating water pump, conveying the solution outside the compressor shell, which is positioned inside the capillary network, to the inside of the capillary network outside the evaporator fins, heating the evaporation fins for defrosting, and returning the heated solution to the inside of the capillary network outside the compressor shell through the water return pipe to finish circulating defrosting.
2. The defrosting method of a high temperature air source heating system according to claim 1, wherein: the heat insulation layer wrapped on the surface of the capillary net in the step 3) is made of a polyurethane material, and the thickness of the heat insulation layer is 1 cm.
3. The defrosting method of a high temperature air source heating system according to claim 1, wherein: and 4) installing a timing switch on the circulating water pump communicated with the water supply pipe in the step 4), wherein the timing switch is set to operate for twenty minutes every two hours in sequence when the main machine is idle.
4. The defrosting method of a high temperature air source heating system according to claim 1, wherein: the liquid in the step 5) adopts an antifreezing aqueous solution, and the antifreezing aqueous solution does not freeze in the low-temperature environment outside the engine room.
5. The defrosting method of a high temperature air source heating system according to claim 1, wherein: and in the step 4), the capillary network is connected with the water supply pipe and the water return pipe through pipe column joints, the pipe column joints are made of copper, and the wall thickness is 5 mm.
6. The defrosting method of a high temperature air source heating system according to claim 1, wherein: the depth of the groove in the step 1) is half of the outer diameter of the capillary tube, and the width of the groove is equal to the length of the outer diameter of the capillary tube.
7. The defrosting method of a high temperature air source heating system according to claim 1, wherein: and 2) welding the capillary network by laser welding, preheating the capillary before welding, and keeping the temperature of the welded pipeline to be not more than 120 ℃.
8. The defrosting method of a high temperature air source heating system according to claim 1, wherein: the surface of the compressor shell is subjected to rust removal in the step 1) by adopting physical rust removal, and the surface of the compressor shell is scrubbed by using a bristle brush to remove a rust part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111309887.9A CN114111138A (en) | 2021-11-07 | 2021-11-07 | Defrosting method of high-temperature air source heating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111309887.9A CN114111138A (en) | 2021-11-07 | 2021-11-07 | Defrosting method of high-temperature air source heating system |
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| CN114111138A true CN114111138A (en) | 2022-03-01 |
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| CN202111309887.9A Pending CN114111138A (en) | 2021-11-07 | 2021-11-07 | Defrosting method of high-temperature air source heating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115046330A (en) * | 2022-06-27 | 2022-09-13 | 深圳市永凯机电设备有限公司 | Combined type energy-saving air source heat pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2076907A1 (en) * | 1991-09-05 | 1993-03-06 | Hansulrich Frutschi | Power station installation |
| CN1204041A (en) * | 1997-06-30 | 1999-01-06 | 大宇电子株式会社 | Refrigerator having apparatus for defrosting |
| CN102901156A (en) * | 2012-11-16 | 2013-01-30 | 中国船舶重工集团公司第七0四研究所 | Frost preventing and removing system and frost preventing and removing method of heat pipe type air conditioner |
| CN202947513U (en) * | 2012-12-05 | 2013-05-22 | 珠海格力电器股份有限公司 | Heat accumulator and air conditioner with same |
| CN212481774U (en) * | 2020-03-24 | 2021-02-05 | 浙江科麦人工环境有限公司 | Auxiliary defrosting device for waste heat of heat pump press |
-
2021
- 2021-11-07 CN CN202111309887.9A patent/CN114111138A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2076907A1 (en) * | 1991-09-05 | 1993-03-06 | Hansulrich Frutschi | Power station installation |
| CN1204041A (en) * | 1997-06-30 | 1999-01-06 | 大宇电子株式会社 | Refrigerator having apparatus for defrosting |
| CN102901156A (en) * | 2012-11-16 | 2013-01-30 | 中国船舶重工集团公司第七0四研究所 | Frost preventing and removing system and frost preventing and removing method of heat pipe type air conditioner |
| CN202947513U (en) * | 2012-12-05 | 2013-05-22 | 珠海格力电器股份有限公司 | Heat accumulator and air conditioner with same |
| CN212481774U (en) * | 2020-03-24 | 2021-02-05 | 浙江科麦人工环境有限公司 | Auxiliary defrosting device for waste heat of heat pump press |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115046330A (en) * | 2022-06-27 | 2022-09-13 | 深圳市永凯机电设备有限公司 | Combined type energy-saving air source heat pump |
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Application publication date: 20220301 |