CN109186140A - Condenser, water cooler and air-conditioning system - Google Patents
Condenser, water cooler and air-conditioning system Download PDFInfo
- Publication number
- CN109186140A CN109186140A CN201811020014.4A CN201811020014A CN109186140A CN 109186140 A CN109186140 A CN 109186140A CN 201811020014 A CN201811020014 A CN 201811020014A CN 109186140 A CN109186140 A CN 109186140A
- Authority
- CN
- China
- Prior art keywords
- condenser
- water
- cavity
- draining exit
- sewage draining
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 238000004378 air conditioning Methods 0.000 title claims abstract description 16
- 239000010865 sewage Substances 0.000 claims description 48
- 239000000498 cooling water Substances 0.000 claims description 37
- 239000012535 impurity Substances 0.000 abstract description 16
- 238000012216 screening Methods 0.000 abstract description 3
- 239000013535 sea water Substances 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 3
- 241001474374 Blennius Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/01—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using means for separating solid materials from heat-exchange fluids, e.g. filters
-
- 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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/046—Condensers with refrigerant heat exchange tubes positioned inside or around a vessel containing water or pcm to cool the refrigerant gas
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/09—Improving heat transfers
Abstract
The invention discloses a kind of condenser, water cooler and air-conditioning systems, wherein condenser, including shell, shell is interior to have cavity, and condenser further includes pollution discharge structure, and pollution discharge structure is arranged on shell and is connected to cavity.Technical solution of the present invention can efficiently solve the problem of cannot be considered in terms of effective impurity screening and property easy to use of condenser in the prior art.
Description
Technical field
The present invention relates to refrigeration technology fields, in particular to a kind of condenser, water cooler and air-conditioning system.
Background technique
Currently, the heat exchanger in water cooler includes evaporator and condenser, evaporator and condenser are typically all to use
Water exchanges heat.It is chilled water in evaporator, is supplied to air-conditioning system and carries out heat exchange cooling, typically closed system,
The available guarantee of cleannes.But the cooling water of condenser is usually external water source, especially civilian is substantially out
Formula water system, cooling water radiate in cooling tower.Wherein, the cooling water of condenser is seawater in marine air-conditioning system, also
It is directly to exchange heat from sea extracting seawater into condenser, is released to later big marine.
In the prior art, generally filter can be installed in cooling water pipeline to be filtered.But the if mesh number of filter
Greatly, cannot effective impurity screening, if in seawater shell, algae, house refuse etc. block heat exchanger tube, heat exchange can be seriously affected
Area；And if the mesh number of filter is small, although biggish impurity can be filtered out, if water quality is poor, silt content is big, still
It is dirty so to will cause heat exchanger tube, reduces the condenser service life, and is easy to dirty stifled, frequently reports high voltage protective, can not normal use,
It is necessarily required to clear up everyday, use is extremely inconvenient, and person works' amount is big.
Summary of the invention
A kind of condenser, water cooler and air-conditioning system are provided in the embodiment of the present invention, it is in the prior art cold to solve
The problem of cannot be considered in terms of effective impurity screening and property easy to use of condenser.
To achieve the above object, the present invention provides a kind of condensers, including shell, and shell is interior to have cavity, condenser
It further include pollution discharge structure, pollution discharge structure is arranged on shell and is connected to cavity.
Further, the bottom of shell is arranged in pollution discharge structure.
Further, shell has disengaging water end (W.E.) and backwater end, and the part of the corresponding disengaging water end (W.E.) of cavity forms disengaging water cavity,
The part that cavity corresponds to backwater end forms backwater cavity, and condenser further includes cooling water inlet and cooling water outlet, cooling water inlet
It is connected to cooling water outlet setting on disengaging water end (W.E.) and with disengaging water cavity.
Further, pollution discharge structure include be arranged in disengaging water end (W.E.) bottom the first sewage draining exit, the first sewage draining exit with into
Water chamber connection, the first sewage draining exit can selectively open or close.
Further, condenser further includes the first row port that the top of disengaging water end (W.E.) is arranged in.
Further, the bottom for passing in and out water end (W.E.) has outwardly directed first pipeline, and the first sewage draining exit is located at the first pipeline
Free end, the connection size of the first pipeline is greater than DN30.
Further, pollution discharge structure includes the second sewage draining exit that the bottom of backwater end is arranged in, the second sewage draining exit and return water
Chamber connection, the second sewage draining exit can selectively open or close.
Further, condenser further includes the second exhaust port that the top of backwater end is arranged in.
Further, the bottom of backwater end has outwardly directed second pipeline, and the second sewage draining exit is located at the second pipeline
The connection size of free end, the second pipeline is greater than DN30.
According to another aspect of the present invention, a kind of water cooler, including condenser are provided, condenser is above-mentioned cold
Condenser.
According to another aspect of the present invention, a kind of air-conditioning system, including water cooler are provided, water cooler is above-mentioned
Water cooler.
It applies the technical scheme of the present invention, pollution discharge structure, and the pollution discharge structure and the intracorporal chamber of shell is set on shell
Body connection.It, can when being saved bit by bit to a certain extent in cavity with the impurity (house refuse, silt, shell, seaweed etc.) that cooling water enters
Above-mentioned impurity to be discharged by opening pollution discharge structure in time, to guarantee the heat transfer effect of condenser, improve heat exchange reliability.
Further, since impurity can be discharged by pollution discharge structure, cooling water pipeline can choose install larger mesh number filter,
The filter for cancelling smaller mesh number, is thus not easy dirty stifled, to ensure that air-conditioning normal reliable is run, it is clear to reduce filter
Maintenance times are managed, use is more convenient.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the condenser of the embodiment of the present invention.
Description of symbols:
10, shell；11, water end (W.E.) is passed in and out；12, backwater end；20, cooling water inlet；30, cooling water outlet；41, the first blowdown
Mouthful；42, the second sewage draining exit；51, first row port；52, second exhaust port.
Specific embodiment
Present invention is further described in detail in the following with reference to the drawings and specific embodiments, but not as to limit of the invention
It is fixed.
As shown in Figure 1, the condenser of the present embodiment is the condenser in water cooler, which is used for marine air conditioner
System.Above-mentioned condenser includes shell 10, cooling water inlet 20, cooling water outlet 30 and pollution discharge structure.Wherein, in shell 10
With cavity.Cooling water inlet 20 and the setting of cooling water outlet 30 are connected on the housing 10 and with cavity.Cooling water inlet 20
In the lower section of cooling water outlet 30, cooling water enters in cavity from cooling water inlet 20, through exchanging heat with the intracorporal heat exchanging part of chamber
And then it is flowed out from cooling water outlet 30.Pollution discharge structure is arranged in the bottom of shell 10 and is connected to cavity.
Using the condenser of the present embodiment, pollution discharge structure, and the pollution discharge structure and shell are set in the bottom of shell 10
Cavity connection in 10.When in cavity with cooling water enter impurity (house refuse, silt, shell, seaweed etc.) save bit by bit to one
Determine degree, above-mentioned impurity can be discharged by opening pollution discharge structure in time, to guarantee that the heat transfer effect of condenser, raising change
Thermal reliability.Further, since impurity can be discharged by pollution discharge structure, cooling water pipeline can choose the larger mesh number of installation
Filter, cancel the filter of smaller mesh number, be thus not easy dirty stifled, to ensure that air-conditioning normal reliable is run, subtract
Few filter cleaning and maintenance number, use are more convenient.
It should be noted that the water cooler of the condenser with the present embodiment is used for marine air-conditioning system, in other realities
It applies in mode, above-mentioned water cooler can also be used for other civilian, commercial air conditioning systems to exchange heat using water.In addition,
In the present embodiment, the bottom of shell 10 is arranged in pollution discharge structure, easily facilitates blowdown in this way.Certainly, it is not shown in the figure its
In his embodiment, pollution discharge structure also be can be set in positions such as the middle and lower parts of shell, as long as being capable of smoothly blowdown.
As shown in Figure 1, shell 10 has disengaging water end (W.E.) 11 and backwater end 12 in the condenser of the present embodiment.Cooling water
Import 20 and the setting of cooling water outlet 30 are on disengaging water end (W.E.) 11.The part of the corresponding disengaging water end (W.E.) 11 of cavity forms disengaging water cavity.
The part that cavity corresponds to backwater end 12 forms backwater cavity.Cavity is located at the part between disengaging water cavity and backwater cavity and forms heat exchange
Chamber.
As shown in Figure 1, in the condenser of the present embodiment, pollution discharge structure include be arranged in disengaging water end (W.E.) 11 bottom the
One sewage draining exit 41.First sewage draining exit 41 can selectively open or close.When the first sewage draining exit 41 is opened, the first sewage draining exit
41 are connected to disengaging water cavity.In the present embodiment, the bottom for passing in and out water end (W.E.) 11 has outwardly directed first pipeline.First blowdown
Mouth 41 is located at the free end of the first pipeline.The setting of above-mentioned first pipeline is easily facilitated to be connect with sewage pipe.Meanwhile by
Valve is set on one pipeline to realize opening or closing for the first sewage draining exit 41.
When air-conditioning system routine use, the first sewage draining exit 41 is in closed state.When use a period of time (generally 3~6
Be advisable within a month) and ship departure from port before, the first sewage draining exit 41 is opened, using the intracavitary existing cooling water of Inlet and outlet water or from cooling
Water inlet 20 will be saved bit by bit in the intracavitary impurity of Inlet and outlet water to the intracavitary cooling water being passed through of Inlet and outlet water, dirty be gone out.If impurity ruler
It is very little larger when can not go out, it can use auxiliary tool (such as waddy) and be stirred by the first sewage draining exit 41, adjust impurity
Posture, so that impurity can be gone out.
In addition, when not cleaned the condenser long period liquid medicine or steel wire lump can be injected from cooling water inlet 20
Deng cleaning auxiliary tool, liquid medicine or steel wire lump flush clean heat exchanger tube are driven using water flow, then dirt is passed through into the first sewage draining exit
41 discharges can be improved condenser cleaning convenience in this way, effectively improve the cleannes of condenser, extend condenser and use the longevity
Life.
It should be noted that the first sewage draining exit 41 is not limited to be arranged on the first pipeline, in other realities not shown in the figure
It applies in mode, the first sewage draining exit can be directly provided on shell.
As shown in Figure 1, in the condenser of the present embodiment, condenser further include be arranged in disengaging water end (W.E.) 11 top the
One exhaust outlet 51.When the water pump in water cooler is not opened, the first sewage draining exit 41 can be by first row port 51 while opening
It opens, the cooling water that Inlet and outlet water can be enable intracavitary in this way is easier to go out from the first sewage draining exit 41.
In the condenser of the present embodiment, the interface that the first pipeline is used to connect sewage pipe can be flange-interface, can also
To be hickey, interface specification can be determining according to use occasion water quality concrete condition.In the present embodiment, due to condenser
Cooling water is seawater, and the universal size of the impurity in seawater is larger, and therefore, the connection size of the first pipeline is greater than DN30.Wherein,
" DN+ number " is standard interface specification representation, and " DN " refers to the nominal diameter of pipe joint, is the average value of outer diameter and internal diameter.
Value -0.5* the pipe thickness of value (number that the back DN the adds)=outer diameter tube of " DN "." DN30 " refers to connecing for the first pipeline
The nominal diameter of mouth is 30mm.
As shown in Figure 1, in the condenser of the present embodiment, pollution discharge structure include be arranged in backwater end 12 bottom second
Sewage draining exit 42.Second sewage draining exit 42 can selectively open or close.When the second sewage draining exit 42 is opened, the second sewage draining exit 42
It is connected to backwater cavity.In the present embodiment, the bottom of backwater end 12 has outwardly directed second pipeline.Second sewage draining exit 42
In the free end of the second pipeline.The setting of above-mentioned second pipeline is easily facilitated to be connect with sewage pipe.Meanwhile by the second pipeline
Upper setting valve realizes opening or closing for the second sewage draining exit 42.Above-mentioned second sewage draining exit 42 is mainly left to by heat exchanger tube
Dirt at backwater cavity is discharged, and plays the role of assisting blowdown.
As shown in Figure 1, in the condenser of the present embodiment, condenser further include be arranged in backwater end 12 top second
Exhaust outlet 52.When the water pump in water cooler is not opened, the second sewage draining exit 42 can beat second exhaust port 52 while opening
It opens, the cooling water in backwater cavity can be enable to be easier to go out from the second sewage draining exit 42 in this way.
In the condenser of the present embodiment, the interface that the second pipeline is used to connect sewage pipe can be flange-interface, can also
To be hickey, interface specification can be determining according to use occasion water quality concrete condition.In the present embodiment, due to condenser
Cooling water is seawater, and the universal size of the impurity in seawater is larger, and therefore, the connection size of the second pipeline is greater than DN30.Wherein,
" DN+ number " is standard interface specification representation, and " DN " refers to the nominal diameter of pipe joint, is the average value of outer diameter and internal diameter.
Value -0.5* the pipe thickness of value (number that the back DN the adds)=outer diameter tube of " DN "." DN30 " refers to connecing for the second pipeline
The nominal diameter of mouth is 30mm.
It should be noted that in the present embodiment, the first sewage draining exit 41 and the second sewage draining exit 42, the first sewage draining exit 41 is arranged
Play the role of main sewerage, and the second sewage draining exit 42 plays auxiliary blowdown.Certainly, in other embodiment party not shown in the figure
In formula, can also the first sewage draining exit be only set or the second sewage draining exit is only set.
Present invention also provides a kind of water coolers, and the embodiment according to the water cooler of the application includes condenser, cold
Condenser is above-mentioned condenser.
Present invention also provides a kind of air-conditioning system, the embodiment according to the air-conditioning system of the application includes water cooler,
Water cooler is above-mentioned water cooler.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, work, device, component and/or their combination.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so that presently filed embodiment described herein can be in addition to illustrating herein
Or the sequence other than those of description is implemented.
It certainly, is the preferred embodiment of the present invention above.It should be pointed out that for those skilled in the art
For, without departing from the basic principles of the invention, several improvements and modifications can also be made, these improvements and modifications
It is considered as protection scope of the present invention.
Claims (11)
1. a kind of condenser, including shell (10), the shell (10) is interior to have cavity, which is characterized in that the condenser is also
Including pollution discharge structure, the pollution discharge structure is arranged on the shell (10) and is connected to the cavity.
2. condenser according to claim 1, which is characterized in that bottom of the pollution discharge structure setting in the shell (10)
Portion.
3. condenser according to claim 1, which is characterized in that the shell (10) has disengaging water end (W.E.) (11) and return water
It holds (12), the part that the cavity corresponds to disengaging water end (W.E.) (11) forms disengaging water cavity, and the cavity corresponds to the backwater end
(12) part forms backwater cavity, and the condenser further includes cooling water inlet (20) and cooling water outlet (30), the cooling
Water inlet (20) and the cooling water outlet (30) are arranged on the disengaging water end (W.E.) (11) and are connected to the disengaging water cavity.
4. condenser according to claim 3, which is characterized in that the pollution discharge structure includes being arranged in the disengaging water end (W.E.)
(11) the first sewage draining exit (41) of bottom, first sewage draining exit (41) are connected to the disengaging water cavity, first blowdown
Mouth (41) can selectively open or close.
5. condenser according to claim 4, which is characterized in that the condenser further includes being arranged in the disengaging water end (W.E.)
(11) the first row port (51) at top.
6. condenser according to claim 4, which is characterized in that the bottom of disengaging water end (W.E.) (11) has protruding
The first pipeline, first sewage draining exit (41) is located at the free end of first pipeline, the connection size of first pipeline
Greater than DN30.
7. condenser according to any one of claim 3 to 6, which is characterized in that the pollution discharge structure includes that setting exists
The second sewage draining exit (42) of the bottom of the backwater end (12), second sewage draining exit (42) is connected to the backwater cavity, described
Second sewage draining exit (42) can selectively open or close.
8. condenser according to claim 7, which is characterized in that the condenser further includes being arranged in the backwater end
(12) second exhaust port (52) at top.
9. condenser according to claim 7, which is characterized in that the bottom of the backwater end (12) has outwardly directed
Second pipeline, second sewage draining exit (42) are located at the free end of second pipeline, and the connection size of second pipeline is big
In DN30.
10. a kind of water cooler, including condenser, which is characterized in that the condenser is any one of claims 1 to 9 institute
The condenser stated.
11. a kind of air-conditioning system, including water cooler, which is characterized in that the water cooler is described in any one of claim 10 cold
Water dispenser group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811020014.4A CN109186140A (en) | 2018-09-03 | 2018-09-03 | Condenser, water cooler and air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811020014.4A CN109186140A (en) | 2018-09-03 | 2018-09-03 | Condenser, water cooler and air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109186140A true CN109186140A (en) | 2019-01-11 |
Family
ID=64917892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811020014.4A Pending CN109186140A (en) | 2018-09-03 | 2018-09-03 | Condenser, water cooler and air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109186140A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002081890A (en) * | 2000-08-31 | 2002-03-22 | Hitachi Ltd | Cooling water cooler and its cleaning method |
| CN203024644U (en) * | 2012-10-19 | 2013-06-26 | 杭州赛富特设备有限公司 | Marine condenser with pipe box |
| CN203613619U (en) * | 2013-12-17 | 2014-05-28 | 李建生 | Double-drainage pressure water tank for water closet and squatting pan |
| CN105222638A (en) * | 2015-10-23 | 2016-01-06 | 苏州市金翔钛设备有限公司 | A kind of good antiscale property condenser |
| CN106091487A (en) * | 2016-07-22 | 2016-11-09 | 王言明 | A kind of cleanable heat pump heat exchanger |
| CN106931682A (en) * | 2017-04-18 | 2017-07-07 | 美的集团武汉制冷设备有限公司 | Air-conditioning system |
| JP2017138083A (en) * | 2016-02-05 | 2017-08-10 | 株式会社東芝 | Condenser, control method for the same, and cooling water system |
| CN208887177U (en) * | 2018-09-03 | 2019-05-21 | 珠海格力电器股份有限公司 | Condenser, water cooler and air-conditioning system |
-
2018
- 2018-09-03 CN CN201811020014.4A patent/CN109186140A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002081890A (en) * | 2000-08-31 | 2002-03-22 | Hitachi Ltd | Cooling water cooler and its cleaning method |
| CN203024644U (en) * | 2012-10-19 | 2013-06-26 | 杭州赛富特设备有限公司 | Marine condenser with pipe box |
| CN203613619U (en) * | 2013-12-17 | 2014-05-28 | 李建生 | Double-drainage pressure water tank for water closet and squatting pan |
| CN105222638A (en) * | 2015-10-23 | 2016-01-06 | 苏州市金翔钛设备有限公司 | A kind of good antiscale property condenser |
| JP2017138083A (en) * | 2016-02-05 | 2017-08-10 | 株式会社東芝 | Condenser, control method for the same, and cooling water system |
| CN106091487A (en) * | 2016-07-22 | 2016-11-09 | 王言明 | A kind of cleanable heat pump heat exchanger |
| CN106931682A (en) * | 2017-04-18 | 2017-07-07 | 美的集团武汉制冷设备有限公司 | Air-conditioning system |
| CN208887177U (en) * | 2018-09-03 | 2019-05-21 | 珠海格力电器股份有限公司 | Condenser, water cooler and air-conditioning system |
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