JP4123220B2 - ヒートポンプ式加熱装置 - Google Patents
ヒートポンプ式加熱装置 Download PDFInfo
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- JP4123220B2 JP4123220B2 JP2004324070A JP2004324070A JP4123220B2 JP 4123220 B2 JP4123220 B2 JP 4123220B2 JP 2004324070 A JP2004324070 A JP 2004324070A JP 2004324070 A JP2004324070 A JP 2004324070A JP 4123220 B2 JP4123220 B2 JP 4123220B2
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- 238000010438 heat treatment Methods 0.000 title claims description 61
- 239000003507 refrigerant Substances 0.000 claims description 238
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 115
- 238000001514 detection method Methods 0.000 claims description 19
- 239000012530 fluid Substances 0.000 claims description 12
- 230000006837 decompression Effects 0.000 claims description 7
- 238000001704 evaporation Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims 1
- 230000004048 modification Effects 0.000 claims 1
- 239000012808 vapor phase Substances 0.000 claims 1
- 239000008400 supply water Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 7
- 239000012071 phase Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
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- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- 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
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- 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
- F25B41/00—Fluid-circulation arrangements
-
- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
- F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
-
- 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
- F25B2339/047—Water-cooled condensers
-
- 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
- F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
- F25B2341/001—Ejectors not being used as compression device
- F25B2341/0011—Ejectors with the cooled primary flow at reduced or low pressure
-
- 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
- F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
- F25B2341/001—Ejectors not being used as compression device
- F25B2341/0012—Ejectors with the cooled primary flow at high pressure
-
- 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
- F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
- F25B2341/001—Ejectors not being used as compression device
- F25B2341/0013—Ejector control arrangements
-
- 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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0253—Compressor control by controlling speed with variable speed
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2102—Temperatures at the outlet of the gas cooler
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
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- 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Description
制御手段(70)は、吐出温度検出手段(13)にて検出される吐出温度(Th)が所定温度(Ts)よりも高くなった場合、可変式減圧手段(40、80)での絞り開度を開くとともに、吐出圧力検出手段(14)にて検出される吐出圧力(Ph)に対する制御手段(70)で吐出温度(Th)、吐出圧力(Ph)、高圧側熱交換器(20)の冷媒出口の熱交換後温度(To)、高圧側熱交換器(20)の流体入口の入口水温(Ti)および外気温度のうち少なくともいずれか一つにより算出する目標吐出圧力(Pt)の比率に応じて、制御手段(70)で算出する圧縮機(10)の目標回転数(N)を補正回転数(N´)に増速補正して運転することを特徴としている。
以下、本発明の実施の形態について図面を用いて詳細に説明する。図1は、本発明の実施形態に係るエジェクタサイクルを用いたヒートポンプ式加熱装置の全体構成模式図である。本実施形態のヒートポンプ式加熱装置は、超臨界ヒートポンプサイクルを用いて給湯用水を高温(本実施形態での最大目標沸き上げ温度は90℃)に加熱して貯湯タンク1に貯湯しながら給湯を行うヒートポンプ式給湯装置に適用したものである。
図4は、本発明の参考例におけるヒートポンプ式加熱装置の制御のフローチャートである。上述した第1実施形態でのフローチャートと異なる特徴は、通常運転もしくは保護制御とそれによる補正を行うか否かを、吐出温度Thではなく吐出圧力Phで行う点である。
図5は、本発明の第2実施形態に係る膨張弁サイクルを用いたヒートポンプ式加熱装置の全体構成模式図である。上述した実施形態と異なる特徴は、可変式減圧手段80は、膨張弁80である。可変式の膨脹弁80は、冷媒水熱交換器20から流出した冷媒を等エンタルピ的に減圧膨脹させるとともに、その絞り開度を可変できる可変式減圧手段であり、本実施形態では、制御装置70により通常は高圧側冷媒の圧力が所定範囲となるように膨脹弁80の絞り開度が可変制御されている。これによれば、減圧手段に膨張弁80を用いた膨張弁サイクルにおいても同様の効果を得ることができる。
上述の実施形態では、冷媒をCO2として高圧側圧力を臨界圧力以上としたが、本発明は上述の実施形態に限定されるものではなく、CO2以外の冷媒で有っても良いし、高圧側圧力も臨界圧力以下であっても良い。また、上述の実施形態では、貯湯式の給湯装置を例に本発明を説明したが、本発明はこの実施形態に限定されるものではなく、貯湯式でなくても良いし、ブラインを加熱してその温熱を利用する床暖房装置・浴室乾燥装置・パネルヒータなどに用いても良い。
11…吸入圧力センサー(吸入圧力検出手段)
12…吸入温度センサー(吸入温度検出手段)
13…吐出温度センサー(吐出温度検出手段)
14…吐出圧力センサー(吐出圧力検出手段)
15…出口冷媒温センサー(温度差検出手段、熱交換後温度検出手段)
16…入口水温センサー(温度差検出手段)
20…冷媒水熱交換器(高圧側熱交換器)
30…冷媒空気熱交換器(低圧側熱交換器)
40…エジェクタ(可変式減圧手段)
41…ノズル
70…制御装置(制御手段)
80…膨張弁(可変式減圧手段)
D…冷媒密度
N…目標回転数
N´…補正回転数
Ph…吐出圧力
Pl…吸入圧力
Ps…所定圧力
Pt…目標吐出圧力
Q…加熱能力
Qt…目標加熱能力
Th…吐出温度
Tl…吸入温度
To…熱交換後温度
Ts…所定温度
Tt…目標吐出温度
Δi…エンタルピー差
Δit…目標エンタルピー差
Δt…温度差
Δtt…目標温度差
Claims (4)
- 低温側の熱を高温側に移動させて流体を加熱する蒸気圧縮式のヒートポンプサイクルを用いた加熱装置であり、
冷媒を吸入圧縮する圧縮機(10)と、
前記圧縮機(10)が吐出する高温高圧の冷媒と被加熱流体とを熱交換させる高圧側熱交換器(20)と、
前記高圧側熱交換器(20)から流出した冷媒を等エンタルピ的に減圧膨脹させるとともに、その絞り開度を可変できる可変式減圧手段(40、80)と、
低温低圧の冷媒と空気とを熱交換させて冷媒を蒸発させる低圧側熱交換器(30)と、
前記圧縮機(10)からの吐出温度(Th)を検出する吐出温度検出手段(13)と、
前記圧縮機(10)からの吐出圧力(Ph)を検出する吐出圧力検出手段(14)と、
上記各機器の作動を制御する制御手段(70)とを有し、
前記制御手段(70)は、前記吐出温度検出手段(13)にて検出される前記吐出温度(Th)が所定温度(Ts)よりも高くなった場合、
前記可変式減圧手段(40、80)での絞り開度を開くとともに、
前記吐出圧力検出手段(14)にて検出される前記吐出圧力(Ph)に対する前記制御手段(70)で前記吐出温度(Th)、前記吐出圧力(Ph)、前記高圧側熱交換器(20)の冷媒出口の熱交換後温度(To)、前記高圧側熱交換器(20)の流体入口の入口水温(Ti)および外気温度のうち少なくともいずれか一つにより算出する目標吐出圧力(Pt)の比率に応じて、前記制御手段(70)で算出する前記圧縮機(10)の目標回転数(N)を補正回転数(N´)に増速補正して運転することを特徴とするヒートポンプ式加熱装置。 - 高圧側の冷媒圧力が冷媒の臨界圧力以上となる超臨界ヒートポンプサイクルを用いたことを特徴とする請求項1に記載のヒートポンプ式加熱装置。
- 前記可変式減圧手段(40)は、高圧冷媒を減圧膨張させるノズル(41)を有し、前記ノズル(41)から噴射する高い速度の冷媒流により前記低圧側熱交換器(30)にて蒸発した気相冷媒を吸引すると共に、膨張エネルギーを圧力エネルギーに変換して前記圧縮機(10)の吸入圧を上昇させるエジェクタ(40)であることを特徴とする請求項1または2に記載のヒートポンプ式加熱装置。
- 前記可変式減圧手段(80)は、膨張弁(80)であることを特徴とする請求項1または2に記載のヒートポンプ式加熱装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004324070A JP4123220B2 (ja) | 2004-11-08 | 2004-11-08 | ヒートポンプ式加熱装置 |
DE102005052763A DE102005052763A1 (de) | 2004-11-08 | 2005-11-04 | Wärmepumpen-Heizvorrichtung |
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JP2004324070A JP4123220B2 (ja) | 2004-11-08 | 2004-11-08 | ヒートポンプ式加熱装置 |
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Application Number | Title | Priority Date | Filing Date |
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JP2008029840A Division JP4530056B2 (ja) | 2008-02-11 | 2008-02-11 | ヒートポンプ式加熱装置 |
JP2008029842A Division JP4715852B2 (ja) | 2008-02-11 | 2008-02-11 | ヒートポンプ式給湯装置 |
JP2008029841A Division JP4407756B2 (ja) | 2008-02-11 | 2008-02-11 | ヒートポンプ式加熱装置 |
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JP2006132875A JP2006132875A (ja) | 2006-05-25 |
JP4123220B2 true JP4123220B2 (ja) | 2008-07-23 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106524613A (zh) * | 2016-11-14 | 2017-03-22 | 广东美的暖通设备有限公司 | 一种变频风冷热泵机组及其控制方法、控制装置 |
CN106524582A (zh) * | 2016-11-24 | 2017-03-22 | 广东美的暖通设备有限公司 | 适于水侧并联风冷热泵机组的压缩机负荷控制方法及装置 |
CN110145906A (zh) * | 2019-05-16 | 2019-08-20 | 广东美的暖通设备有限公司 | 冷媒循环系统及其控制方法和计算机可读存储介质 |
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JP2008064439A (ja) * | 2006-09-11 | 2008-03-21 | Daikin Ind Ltd | 空気調和装置 |
JP4950004B2 (ja) * | 2007-11-12 | 2012-06-13 | 株式会社コロナ | ヒートポンプ式給湯装置 |
EP2088388B1 (en) * | 2008-02-06 | 2019-10-02 | STIEBEL ELTRON GmbH & Co. KG | Heat pump system |
WO2010039630A2 (en) * | 2008-10-01 | 2010-04-08 | Carrier Corporation | High-side pressure control for transcritical refrigeration system |
WO2012053229A1 (ja) * | 2010-10-18 | 2012-04-26 | 三菱電機株式会社 | 冷凍サイクル装置及び冷媒循環方法 |
JP6472266B2 (ja) * | 2015-02-20 | 2019-02-20 | 大阪瓦斯株式会社 | エジェクタサイクル |
CN104896750A (zh) * | 2015-04-10 | 2015-09-09 | 广东美的暖通设备有限公司 | 一种跨临界co2热泵热水机压力的控制方法及系统 |
CN106595149A (zh) * | 2016-11-22 | 2017-04-26 | 珠海格力电器股份有限公司 | 空调器的冷媒回收方法和装置 |
AU2020438844B2 (en) * | 2020-03-23 | 2023-11-02 | Toshiba Carrier Corporation | Heat pump heat source device and heat pump water heater |
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2004
- 2004-11-08 JP JP2004324070A patent/JP4123220B2/ja not_active Expired - Fee Related
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2005
- 2005-11-04 DE DE102005052763A patent/DE102005052763A1/de not_active Withdrawn
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CN106524613A (zh) * | 2016-11-14 | 2017-03-22 | 广东美的暖通设备有限公司 | 一种变频风冷热泵机组及其控制方法、控制装置 |
CN106524582A (zh) * | 2016-11-24 | 2017-03-22 | 广东美的暖通设备有限公司 | 适于水侧并联风冷热泵机组的压缩机负荷控制方法及装置 |
CN106524582B (zh) * | 2016-11-24 | 2019-04-19 | 广东美的暖通设备有限公司 | 适于水侧并联风冷热泵机组的压缩机负荷控制方法及装置 |
CN110145906A (zh) * | 2019-05-16 | 2019-08-20 | 广东美的暖通设备有限公司 | 冷媒循环系统及其控制方法和计算机可读存储介质 |
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DE102005052763A1 (de) | 2006-06-01 |
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