CN113790548A - Evaporation type condenser - Google Patents
Evaporation type condenser Download PDFInfo
- Publication number
- CN113790548A CN113790548A CN202010986428.3A CN202010986428A CN113790548A CN 113790548 A CN113790548 A CN 113790548A CN 202010986428 A CN202010986428 A CN 202010986428A CN 113790548 A CN113790548 A CN 113790548A
- Authority
- CN
- China
- Prior art keywords
- water
- heat exchangers
- fin heat
- end plate
- fin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001704 evaporation Methods 0.000 title description 6
- 230000008020 evaporation Effects 0.000 title description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 111
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 9
- 239000010935 stainless steel Substances 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims abstract description 7
- 239000000498 cooling water Substances 0.000 claims description 23
- 239000003507 refrigerant Substances 0.000 claims description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 239000005030 aluminium foil Substances 0.000 claims 2
- 238000001816 cooling Methods 0.000 abstract description 15
- 230000005494 condensation Effects 0.000 abstract description 10
- 238000009833 condensation Methods 0.000 abstract description 10
- 230000017525 heat dissipation Effects 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 239000011888 foil Substances 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002699 waste material Substances 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
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses an evaporative condenser, which comprises an installation base and fin heat exchangers, wherein the two fin heat exchangers are respectively and fixedly installed on two sides of the upper surface of the installation base; a water receiving tray is fixedly welded on the lower surface of the mounting base, a water collector is fixedly mounted at the other end of the lower surface of the water receiving tray, a stainless steel tray body is further arranged in the water receiving tray, and a sinking type water collecting tank is fixedly arranged at one end, close to the water collector, in the stainless steel tray body; the other end of the water collector is communicated with a water pump through a water pipe, the water outlet end of the water pump is fixedly connected with a water delivery pipeline, the other end of the water delivery pipeline is fixedly provided with a water distributor, the water distributor is fixedly arranged right above the fin heat exchangers, and the arrangement shapes of the two fin heat exchangers are V-shaped. The invention has the characteristics of small integral volume of equipment, continuous circulating cooling and heat dissipation and high condensation heat exchange efficiency.
Description
The technical field is as follows:
the invention relates to the technical field of condensers, in particular to an evaporative condenser.
Background art:
in the existing evaporation cooling type heat pump machine, a cooling water collecting device is positioned at the bottom of a unit at a condensation side, a condenser and a cooling fan are sequentially arranged on the cooling water collecting device, and a cooling water pump and other refrigeration components are arranged in another machine room beside the cooling water collecting device; in addition, in the existing evaporation cooling type heat pump machine, a fin type heat exchanger is adopted on the high-temperature heat source side, and two fin type heat exchangers form a group. In the group of fin type heat exchangers, only one fin type heat exchanger adopts evaporative cooling type heat exchange, and the other fin type heat exchanger adopts air direct cooling;
the existing evaporative cooling type heat pump machine structure has several problems:
1. the water collecting device is positioned at the bottom of the unit and is as high as a cooling water pump mounting base, in order to ensure the normal circulation of cooling water and avoid the air suction of the cooling water pump, the water level in the water collecting tank needs to be at least 500mm high, so that the running weight of equipment is increased, the requirement on the base is stricter, and when cooling water cleaning is performed each time, more water is discharged, and the energy consumption is high;
2. the existing water collecting device at the condensation side causes that other refrigeration parts cannot be installed at the condensation side, and a machine room is independently arranged, so that the equipment is huge in size;
3. the heat exchange modes of the two heat exchangers are different, so that the heat exchange efficiency of the two heat exchangers is greatly different, but the refrigerant is averagely distributed to the two heat exchangers, the air-cooled heat exchanger is inevitably subjected to incomplete condensation due to low heat exchange efficiency, the other heat exchanger is subjected to heat exchange with high heat exchange efficiency, the surplus of the heat exchange area is too large, unnecessary waste is caused, in addition, air passes through the air-cooled condenser, after the temperature is increased, the air is subjected to heat exchange with cooling water for cooling the evaporative condenser, and the heat exchange of equipment is obviously not facilitated.
The invention content is as follows:
the invention aims to provide an evaporative condenser, which aims to solve the problems of large equipment volume caused by large running weight and large cooling water volume of the equipment, low heat exchange efficiency, incomplete condensation and the like.
The invention is implemented by the following technical scheme: an evaporative condenser comprises an installation base and fin heat exchangers, wherein the two fin heat exchangers are fixedly installed on two sides of the upper surface of the installation base respectively;
a water receiving tray is fixedly welded on the lower surface of the mounting base, a water collector is fixedly mounted at the other end of the lower surface of the water receiving tray, a stainless steel tray body is further arranged in the water receiving tray, and a sinking type water collecting tank is fixedly arranged at one end, close to the water collector, in the stainless steel tray body;
the other end of the water collector is communicated with a water pump through a water pipe, the water outlet end of the water pump is fixedly connected with a water delivery pipeline, the other end of the water delivery pipeline is fixedly connected with a water distributor, the water distributor is fixedly installed right above the fin heat exchangers, the cross section of the installation base is triangular, and the two fin heat exchangers are installed in a V-shaped arrangement mode.
Preferably, the end plates are fixedly mounted at two ends of the interior of the finned heat exchanger, the surfaces of the end plates are fixedly provided with holes penetrating through the end plates, copper pipes are fixedly arranged in the holes in a penetrating mode, aluminum foil fins are fixedly mounted in the end plates, and the copper pipes penetrate through the aluminum foil fins.
Preferably, the surface of the end plate is fixedly provided with a refrigerant hole penetrating through the end plate, the refrigerant hole is fixedly arranged on two sides of the opening, and the refrigerant hole is used for providing a passage for refrigerant to enter the end plate.
Preferably, the liquid separating device further comprises a main flow channel, one end of the main flow channel is fixedly connected with the branch flow channels, the other ends of the two branch flow channels are fixedly connected with branch pipes, and the other ends of the branch pipes are respectively fixedly connected with the refrigerant holes.
Preferably, the water distributor is uniformly provided with water nozzles on the lower surface thereof, and the water nozzles are used for spraying cooling water to the surface of the fin heat exchanger.
Preferably, a compressor is fixed inside the water collector and used for increasing the pressure of the inlet of the water pump.
The invention has the advantages that:
1. the middle part of the condensation side of the invention is provided with the water pan, one end of the water pan is provided with the small sunken water collecting tank, and other parts such as a compressor, a water pump and the like of the equipment are arranged at the lower part of the water pan.
2. The water collecting tray collects cooling water flowing down from the heat exchanger, and finally collects the cooling water into the water collector to perform circulating operation, so that the aim of continuously cooling and radiating is fulfilled.
3. According to the invention, the two heat exchangers in the same group are both arranged into evaporation cooling type heat exchangers and are arranged in a V shape, and the two heat exchangers adopt high-efficiency evaporation cooling modes, so that the heat exchange efficiency is the same, the condensation heat exchange efficiency is greatly improved, the area of the heat exchanger is reduced, and the cost is reduced.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic diagram of a half-sectional structure of a finned heat exchanger according to the present invention;
FIG. 3 is a schematic view of the end plate of the present invention;
FIG. 4 is a schematic structural view of a liquid separating device according to the present invention;
FIG. 5 is a schematic sectional view of the water pan of the present invention.
In the figure: 1. installing a base; 2. a water collector; 3. a water pump; 4. a water delivery pipeline; 5. a water distributor; 51. a water spray nozzle; 6. connecting the end plates; 7. an upper fixing plate; 8. a finned heat exchanger; 81. an end plate; 811. opening a hole; 812. a refrigerant hole; 82. a copper pipe; 83. aluminum foil fins; 9. a water pan; 91. a stainless steel tray body; 92. a sink-type water collecting tank; 10. a liquid separating device; 101. a main flow channel; 102. a shunt channel; 103. and (4) branch pipes.
The specific implementation mode is as follows:
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. 1-5, an evaporative condenser comprises a mounting base 1 and fin heat exchangers 8, wherein the two fin heat exchangers 8 are respectively and fixedly mounted on two sides of the upper surface of the mounting base 1, upper fixing plates 7 are respectively and fixedly mounted at the top ends of the two fin heat exchangers 8, connecting end plates 6 are respectively and fixedly mounted on two sides of the top ends of the two fin heat exchangers 8, and a liquid separating device 10 is fixedly mounted on one side of each fin heat exchanger 8;
a water receiving tray 9 is fixedly welded on the lower surface of the mounting base 1, a water collector 2 is fixedly mounted at the other end of the lower surface of the water receiving tray 9, a stainless steel tray body 91 is further arranged in the water receiving tray 9, a sinking type water collecting tank 92 is fixedly arranged at one end, close to the water collector 2, in the stainless steel tray body 91, and the sinking type water collecting tank 92 is used for guiding cooling water to move downwards;
the other end of the water collector 2 is communicated with a water pump 3 through a water pipe, the water outlet end of the water pump 3 is fixedly connected with a water delivery pipeline 4, the other end of the water delivery pipeline 4 is fixedly connected with a water distributor 5, the water distributor 5 is fixedly arranged right above the fin heat exchangers 8, the cross section of the installation base 1 is triangular, and the two fin heat exchangers 8 are arranged and installed in a V-shaped shape.
The middle part of the condensation side of the invention is provided with a water pan 9, one end of the water pan 9 is provided with a small sunken water collecting tank 92, and other parts of the compressor, the water pump 3 and the like of the equipment are arranged at the lower part of the water pan 9, thereby reducing the water storage amount of cooling water, improving the pressure at the inlet of the water pump 3, ensuring the layout of the equipment to be more reasonable, reducing the whole volume of the equipment, and reducing the manufacturing cost, the transportation cost and the maintenance cost. The water collecting tray collects cooling water flowing down from the heat exchanger, and finally collects the cooling water into the water collector 2 to circularly operate, so that the aim of continuously cooling and radiating is fulfilled.
In a preferred embodiment of the present invention, end plates 81 are fixedly mounted at both ends of the interior of the finned heat exchanger 8, an opening 811 penetrating through the end plate 81 is fixedly formed on the surface of the end plate 81, a copper pipe 82 is fixedly penetrated through the inside of the opening 811, an aluminum foil fin 83 is fixedly mounted inside the end plate 81, and the copper pipes 82 all penetrate through the inside of the aluminum foil fin 83.
In a preferred embodiment of the present invention, a refrigerant hole 812 penetrating through the end plate 81 is fixedly formed on the surface of the end plate 81, the refrigerant hole 812 is fixedly formed on both sides of the opening 811, and the refrigerant hole 812 is used for providing a passage for a refrigerant to enter the interior of the end plate 81.
In a preferred embodiment of the present invention, the liquid separating device 10 further includes a main channel 101, one end of the main channel 101 is fixedly connected to the branch channels 102, the other ends of the two branch channels 102 are fixedly connected to the branch pipes 103, and the other ends of the branch pipes 103 are respectively fixedly connected to the refrigerant holes 812.
In a preferred embodiment of the present invention, water nozzles 51 are uniformly fixed on the lower surface of the water distributor 5, and the water nozzles 51 are used for spraying cooling water to the surface of the fin heat exchanger 8.
In a preferred embodiment of the present invention, a compressor is fixed inside the sump 2, and the compressor is used to increase the pressure of the inlet of the water pump 3.
Description of embodiments of the invention:
the evaporative cooling type heat exchanger is set to be the same as the two heat exchangers in the same group, the V-shaped arrangement is realized, the two heat exchangers adopt efficient evaporative cooling modes, the heat exchange efficiency is the same, the condensation heat exchange efficiency is greatly improved, the area of the heat exchangers is reduced, and the cost is reduced.
The end plates 81 are arranged at two ends of the fin type heat exchanger, the end plates 81 are provided with openings 811, copper pipes 82 are connected with the end plates 81 at the two ends through the openings 811 on the end plates 81, aluminum foil fins 83 are sleeved on the copper pipes 82, and refrigerant is evenly distributed on the fin type heat exchanger 8 through the liquid distribution device 10.
The cooling water in the water collector 2 is conveyed by the water pump 3, the cooling water is conveyed into the water distributor 5 by the water conveying pipeline 4 and sprayed onto the fin heat exchanger 8, and the water collecting tray 9 collects the cooling water flowing down from the fin heat exchanger 8 and finally collects the cooling water in the water collector 2 to perform circulating operation, so that the purpose of continuously cooling and radiating is achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. An evaporative condenser comprises a mounting base (1) and fin heat exchangers (8), and is characterized in that the two fin heat exchangers (8) are respectively and fixedly mounted on two sides of the upper surface of the mounting base (1), upper fixing plates (7) are respectively and fixedly mounted at the top ends of the two fin heat exchangers (8), connecting end plates (6) are respectively and fixedly mounted on two sides of the top ends of the two fin heat exchangers (8), and a liquid separating device (10) is fixedly mounted on one side of each fin heat exchanger (8);
a water receiving tray (9) is fixedly welded on the lower surface of the mounting base (1), a water collector (2) is fixedly mounted at the other end of the lower surface of the water receiving tray (9), a stainless steel tray body (91) is further arranged in the water receiving tray (9), and a sinking type water collecting tank (92) is fixedly arranged at one end, close to the water collector (2), in the stainless steel tray body (91);
the water collector is characterized in that the other end of the water collector (2) is communicated with a water pump (3) through a water pipe, a water outlet end of the water pump (3) is fixedly connected with a water conveying pipeline (4), the other end of the water conveying pipeline (4) is fixedly connected with a water distributor (5), the water distributor (5) is fixedly installed right above the fin heat exchangers (8), the cross section of the installation base (1) is triangular, and the arrangement shapes of the two fin heat exchangers (8) are V-shaped.
2. An evaporative condenser, as claimed in claim 1, wherein: the equal fixed mounting in inside both ends of finned heat exchanger (8) has end plate (81), and end plate (81) fixed surface sets up trompil (811) that runs through end plate (81), and the inside fixed mounting that runs through of trompil (811) has copper pipe (82), and the inside fixed mounting of end plate (81) has aluminium foil fin (83), and inside aluminium foil fin (83) all run through in copper pipe (82).
3. An evaporative condenser, as claimed in claim 2, wherein: the surface of the end plate (81) is fixedly provided with a refrigerant hole (812) penetrating through the end plate (81), the refrigerant hole (812) is fixedly arranged on two sides of the opening hole (811), and the refrigerant hole (812) is used for providing a channel for a refrigerant to enter the end plate (81).
4. An evaporative condenser, as claimed in claim 3, wherein: the liquid distribution device (10) is characterized by further comprising a main flow channel (101), one end of the main flow channel (101) is fixedly connected with branch flow channels (102), the other ends of the two branch flow channels (102) are fixedly connected with branch pipes (103), and the other ends of the branch pipes (103) are fixedly connected with refrigerant holes (812) respectively.
5. An evaporative condenser, as claimed in claim 1, wherein: and water nozzles (51) are fixedly and uniformly arranged on the lower surface of the water distributor (5), and the water nozzles (51) are used for spraying cooling water to the surface of the fin heat exchanger (8).
6. An evaporative condenser, as claimed in claim 1, wherein: and a compressor is fixed in the water collector (2) and used for increasing the pressure of an inlet of the water pump (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010986428.3A CN113790548A (en) | 2020-11-09 | 2020-11-09 | Evaporation type condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010986428.3A CN113790548A (en) | 2020-11-09 | 2020-11-09 | Evaporation type condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113790548A true CN113790548A (en) | 2021-12-14 |
Family
ID=78876792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010986428.3A Pending CN113790548A (en) | 2020-11-09 | 2020-11-09 | Evaporation type condenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113790548A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117580329A (en) * | 2023-11-24 | 2024-02-20 | 扬州阔图制冷设备有限公司 | Warship cabin heat exchanger |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914077A (en) * | 2012-11-13 | 2013-02-06 | 无锡职业技术学院 | Air-cooled heat pump circulating system and heating and refrigerating methods thereof |
| CN104764259A (en) * | 2015-03-19 | 2015-07-08 | 珠海格力电器股份有限公司 | Air-cooled screw unit condenser structure and assembling method thereof |
| KR101878367B1 (en) * | 2018-01-24 | 2018-07-13 | 주식회사 삼화에이스 | Indirect evaporative cooling outdoor unit of thermo-hygrostat |
| US20190137183A1 (en) * | 2017-09-19 | 2019-05-09 | Evapco, Inc. | Air-cooled heat transfer device with integrated and mechanized air pre-cool system |
| CN110260555A (en) * | 2019-07-19 | 2019-09-20 | 四川贝园科技有限公司 | A kind of heating-cooling double-effect refrigeration air-conditioner and working method |
| CN111033150A (en) * | 2017-08-08 | 2020-04-17 | 三菱电机株式会社 | Heat exchange unit and refrigeration cycle device |
-
2020
- 2020-11-09 CN CN202010986428.3A patent/CN113790548A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914077A (en) * | 2012-11-13 | 2013-02-06 | 无锡职业技术学院 | Air-cooled heat pump circulating system and heating and refrigerating methods thereof |
| CN104764259A (en) * | 2015-03-19 | 2015-07-08 | 珠海格力电器股份有限公司 | Air-cooled screw unit condenser structure and assembling method thereof |
| CN111033150A (en) * | 2017-08-08 | 2020-04-17 | 三菱电机株式会社 | Heat exchange unit and refrigeration cycle device |
| US20190137183A1 (en) * | 2017-09-19 | 2019-05-09 | Evapco, Inc. | Air-cooled heat transfer device with integrated and mechanized air pre-cool system |
| KR101878367B1 (en) * | 2018-01-24 | 2018-07-13 | 주식회사 삼화에이스 | Indirect evaporative cooling outdoor unit of thermo-hygrostat |
| CN110260555A (en) * | 2019-07-19 | 2019-09-20 | 四川贝园科技有限公司 | A kind of heating-cooling double-effect refrigeration air-conditioner and working method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117580329A (en) * | 2023-11-24 | 2024-02-20 | 扬州阔图制冷设备有限公司 | Warship cabin heat exchanger |
| CN117580329B (en) * | 2023-11-24 | 2024-06-07 | 扬州阔图制冷设备有限公司 | Warship cabin heat exchanger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113790548A (en) | Evaporation type condenser | |
| CN213238604U (en) | Cooling tower geomantic omen ratio control economizer | |
| CN211120728U (en) | Water-saving efficient cooling tower | |
| CN201285232Y (en) | Plate-type evaporative cooler | |
| CN203464553U (en) | Novel plate-type evaporative condenser | |
| CN213208710U (en) | Precooling type air cooling device | |
| CN211345656U (en) | Indirect evaporation air conditioner | |
| CN210321280U (en) | Surface cooling heat exchanger for evaporative cooling | |
| CN216204486U (en) | Integral evaporative condenser | |
| CN214470194U (en) | Closed cooling tower with water distribution system | |
| CN205579925U (en) | Air -conditioner condensate water recycling and reusing device | |
| CN216011823U (en) | Evaporative wet curtain air cooler with combination of multiple modules | |
| CN215175555U (en) | Air conditioner outdoor unit with improved heat dissipation | |
| CN217636875U (en) | Integrated cold station integrated transverse flow open type cooling tower special for efficient machine room | |
| CN220121229U (en) | Integrated server cooling mechanism | |
| CN209991811U (en) | Coil pipe for cooling equipment | |
| CN219103747U (en) | Novel high-efficient circulating water air cooling device | |
| CN117329875A (en) | Transverse flow dry-wet dual-purpose water-saving fog-dissipating closed cooler | |
| CN219083428U (en) | Air-cooled chiller | |
| CN220061957U (en) | Water drenching device, drainage equipment and air conditioner | |
| CN216790579U (en) | Low-cost outdoor evaporative condenser | |
| CN216592298U (en) | Constant temperature screw heat pump unit | |
| CN204678575U (en) | A kind of recovery type heat combined type evaporative cooling enclosed handpiece Water Chilling Units | |
| CN221099410U (en) | Industrial water-saving cooling tower | |
| CN214701484U (en) | Cooling device for refrigeration dryer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211214 |
|
| RJ01 | Rejection of invention patent application after publication |