公开(公告)号：WO2022172866A1

公开(公告)日：2022-08-18

申请号：PCT/JP2022/004410

申请日：2022-02-04

Applicant: DAIKIN INDUSTRIES, LTD. ,  DAIKIN EUROPE N.V.

Inventor： KIRSCHNER, Timo

IPC: F24D17/00 ,  F24D17/02 ,  F28D20/00 ,  F28D1/047

Abstract: The present disclosure relates to a system for producing domestic hot water, comprising a tank (10) having a top portion and a bottom portion, the tank (10) containing a heat storing fluid (12), a tapping unit (14) comprising a first tapping coil (20) and a second tapping coil (22), wherein the first tapping coil (20) is fluidly connected to a cold water port (16) and to a hot water port (18), and is immersed in the heat storing fluid (12) in the bottom portion of the tank (10), wherein the second tapping coil (22) is fluidly connected in series to the first tapping coil (20) by a connection pipe (32), and to the hot water port (18), and is immersed in the heat storing fluid (12) in the top portion of the tank (10), a switching device (40) configured to switch between a first state in which water flows from the cold water port (16) through only the first tapping coil (20) to the hot water port (18), and a second state in which water flows from the cold water port (16) through the first tapping coil (20) and, after having flown through the first tapping coil (20), through to the second tapping coil (22) to the hot water port (18). The present disclosure further relates to correspond method for producing domestic hot water.

公开(公告)号：WO2022102477A1

公开(公告)日：2022-05-19

申请号：PCT/JP2021/040436

申请日：2021-11-02

Applicant: DAIKIN INDUSTRIES, LTD. ,  DAIKIN EUROPE N.V.

Inventor： KARASAHIN, Mustafa

IPC: F24D3/08

Abstract: The invention relates to a flow hydroblock (3.1) connected with a heat exchanger (2) within a hydroblock group (3) of water heater device (1), including a filling valve (4), a safety valve (6), and a 3-way valve (5), and for keeping constant pressure within the hydroblock group; the filling valve is positioned either in a way that water entering the flow hydroblock between the heat exchanger and the outlet direction of the 3-way valve, or in a way that water entering the flow hydroblock before the inlet direction of the 3-way valve, and safety valve is positioned before inlet direction of the 3-way valve.

公开(公告)号：WO2022097680A1

公开(公告)日：2022-05-12

申请号：PCT/JP2021/040591

申请日：2021-11-04

Applicant: DAIKIN INDUSTRIES, LTD. ,  DAIKIN EUROPE N.V.

Inventor： YAMAGUCHI, Takahiro ,  VANDAELE, Stefan ,  VAN DE VELDE, Kris

IPC: F25B41/20 ,  F25B6/04 ,  F25B13/00

Abstract: The present disclosure relates to a refrigerant circuit for cooling and/or heating purposes. In particular, the disclosure relates to a refrigerant circuit (1) for a refrigeration apparatus with a thermal storage, which is using CO2 as refrigerant, including: at least one compressor (10), a heat-source-side heat exchanger (11), an expansion device (12), and a thermal storage (20), including a thermal storage material (21), which is preferably a phase changing material (PCM) from the group: organic PCMs like bio-based, paraffin, carbohydrate or lipid derived, or water, wherein the refrigerant circuit (1) further includes: a first fluid communication pipe (30) communicating between a fluid side of the heat-source-side heat exchanger (11) and one side of the thermal storage (20), and a second fluid communication pipe (40) communicating between the expansion device (12) and the other side of the thermal storage (20).

公开(公告)号：WO2021225093A1

公开(公告)日：2021-11-11

申请号：PCT/JP2021/016761

申请日：2021-04-27

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： ISHIGURO, Takaya

IPC: F25B31/00

Abstract: A HVAC system refrigeration circuit is provided. Embodiments of the present disclosure relate to a refrigeration circuit configured to balance the oil carryover between multiple compressors using a single refrigeration circuit. Embodiments of the present disclosure allow for the use of one or more inverter compressors and one or more fixed speed compressors. Embodiments of the present disclosure utilize capillary tubes or other flow control methods to balance the oil carryover between multiple compressors.

公开(公告)号：WO2021220584A1

公开(公告)日：2021-11-04

申请号：PCT/JP2021/005527

申请日：2021-02-15

Applicant: DAIKIN INDUSTRIES, LTD. ,  DAIKIN EUROPE N.V.

Inventor： STEEN, David ,  CORNELIS, Kevin ,  DEGRANDE, Arne

IPC: F24F11/36 ,  F24F13/20

Abstract: Provided a valve unit (100) used for a heat-pump system, comprising: at least one liquid refrigerant pipe portion (210, 211); at least one gas refrigerant pipe portion (220, 221, 230, 240, 241); at least one liquid control valve (264) disposed in the liquid refrigerant pipe portion; at least one gas control valve (261, 262, 265) disposed in the gas refrigerant pipe portion; a casing (300) accommodating at least the liquid control valve and the gas control valve; and an air-discharge mechanism (500) configured to operate to discharge an air in an internal space (301) of the casing to an external space outside the casing when a refrigerant leakage in the casing has occurred.

公开(公告)号：WO2021125354A1

公开(公告)日：2021-06-24

申请号：PCT/JP2020/047695

申请日：2020-12-21

Applicant: DAIKIN INDUSTRIES, LTD. ,  DAIKIN EUROPE N.V.

Inventor： DELANGHE, Eddy ,  COORENS, Alain ,  HEINTZ, Nicolas ,  DANGREAU, Jonas ,  DE CLERCK, Robbe ,  DEMEYER, Paul ,  COESSENS, Tim

IPC: F24F1/02 ,  F24F1/022 ,  F24F1/029 ,  F24F13/20

Abstract: The present invention describes a heat pump and a method for installing the same inside an indoor space. The heat pump comprises a refrigerant circuit configured to circulate flammable refrigerant as well as an indoor unit (10) configured to be arranged in the indoor space. The refrigerant circuit comprises a compressor, a utilisation-side heat exchanger (19), an expansion device and a heat-source-side heat exchanger connected by piping. Further, the indoor unit (10) comprises an outer casing (15) having a top (16) and a sealed container (20) accommodated in the outer casing (15). The sealed container (20) has a bottom (21) and a top (22) and accommodates at least one of the compressor, utilisation-side heat exchanger (20), the expansion device and the heat-source-side heat exchanger. The sealed container (20) has a release opening (23) to exhaust leaking refrigerant to the exterior of the outer casing (15) of the indoor unit (10).

公开(公告)号：WO2020184491A1

公开(公告)日：2020-09-17

申请号：PCT/JP2020/009888

申请日：2020-03-06

Applicant: DAIKIN INDUSTRIES, LTD. ,  DAIKIN EUROPE N.V.

Inventor： YOSHIKAWA, Kouta ,  VANSTEENKISTE, Wim ,  HATTIANGADI, Akshay ,  GARCIA LOPEZ, Jose Daniel ,  SURMONT, Tom ,  MEHTA, Rishi

IPC: F25B13/00 ,  F25B47/02 ,  F25B47/00

Abstract: Outdoor unit (10) for a heat pump (1) comprising a refrigerant circuit, the outdoor unit comprising a compressor (13), a discharge pipe (17) of the refrigerant circuit connected to a discharge side of the compressor (13), a bottom plate (31), the bottom plate (31) having a base (36) and an outer flange (37) protruding upward from an outer edge of the base (36), a heat source heat exchanger (11) supported on the bottom plate (31), a liquid refrigerant pipe (19; 20) of the refrigerant circuit connected to the heat source heat exchanger (11), and a defrosting bypass pipe (50) connected at one end to the discharge pipe (17) and at the opposite end to the liquid refrigerant pipe (19; 20), the defrosting bypass pipe (50) being arranged between an inner side (37a) of the flange (37) and an outer side (11a) of the heat source heat exchanger (11).

公开(公告)号：WO2018147412A1

公开(公告)日：2018-08-16

申请号：PCT/JP2018/004605

申请日：2018-02-09

Applicant: DAIKIN INDUSTRIES, LTD. ,  DAIKIN EUROPE N.V.

Inventor： PIRMEZ, Pieter ,  KAWANO, Satoshi ,  KOJIMA, Akiharu

IPC: F24F1/24 ,  F24F1/06 ,  F24F13/20 ,  F24F1/46

Abstract: Heat source unit (2) for an air conditioner (1) comprising a refrigerant circuit, the heat source unit comprising an external housing (10) accommodating a compressor (3) to be connected to the refrigerant circuit; a heat source heat exchanger (5) to be connected to the refrigerant circuit and configured to exchange heat between a refrigerant circulating in the refrigerant circuit and a heat source (104); an electric box (30) having a top (31) and side walls (32 to 34), the electric box accommodating electrical components (36) to configured to control the air conditioner and having an air passage (37) comprising an air inlet (38) and an air outlet (39), an air flow (41) being induced through the air passage from the air inlet to the air outlet for cooling at least some of the electrical components, wherein a cooling heat exchanger (22) accommodated in the external housing and to be connected to the refrigerant circuit, wherein the cooling heat exchanger (22) is arranged so as to be flown through by the air flow (41) and exchange heat between the refrigerant and the air flow (41).

公开(公告)号：WO2018056176A1

公开(公告)日：2018-03-29

申请号：PCT/JP2017/033327

申请日：2017-09-14

Applicant: DAIKIN INDUSTRIES, LTD. ,  DAIKIN EUROPE N.V.

Inventor： CHIKAMI, Hideo ,  COESSENS, Tim

IPC: F24F5/00 ,  F24F11/00

Abstract: Provided is a system (10) for air-conditioning and hot-water supply configured to selectively perform a cooling operation and heating operation, comprising: an outdoor unit (110) having a compressor (111) and an outdoor heat exchanger (113); a plurality of indoor units (120a, 120b) each of which is connected to the outdoor unit (110) and includes an indoor heat exchanger (121a, 121b); a hot-water supply unit (130) connected to the outdoor unit so as to be arranged in parallel to the indoor unit and including a refrigerant-water heat exchanger (131); and a controller (100) configured to monitor a request for hot-water supply from the hot-water supply unit. The controller (100) is further configured to continue a cooling operation after said request has occurred and until a predetermined condition is satisfied where the request for hot-water supply has occurred during said cooling operation at at least one of the plurality of indoor units, and then to start a heating operation.

Abstract translation: 提供了一种用于选择性地执行制冷操作和制热操作的用于空调和热水供应的系统（10），其包括：室外单元（110），其具有压缩机（111）和 室外热交换器（113）; 多个室内机组（120a，120b），各室内机组与室外机组（110）连接，并具有室内热交换器（121a，121b）。 与所述室外机连接且与所述室内机并列配置且具有制冷剂 - 水热交换器131的热水供给部130; 以及控制部（100），监视来自所述热水供给部的热水供给要求。 控制器（100）还被配置为在发生所述请求之后继续冷却操作，并且直到满足预定条件，其中在多个室内单元中的至少一个室内单元中的所述冷却操作期间发生了热水供应请求， 然后开始加热操作。

公开(公告)号：WO2017061564A1

公开(公告)日：2017-04-13

申请号：PCT/JP2016/079839

申请日：2016-10-06

Applicant: DAIKIN INDUSTRIES, LTD. ,  DAIKIN EUROPE N.V.

Inventor： BAETENS, Frans ,  PIRMEZ, Pieter ,  VANOOTEGHEM, Jan

IPC: F24F1/00 ,  F24F1/28 ,  F24F1/10

CPC classification number: F24F1/0003 ,  F24F1/10 ,  F24F1/28 ,  F25B13/00 ,  F25B41/003 ,  F25B2313/021 ,  F25B2500/01

Abstract: Air conditioner for conditioning a space (72) inside a building (70) includes a heat source unit (30) and at least one indoor unit (50). The heat source unit (30) has a heat exchanger unit (31) and a compressor unit (32). The heat exchanger unit (31) includes a first heat exchanger (5) disposed in a first casing (2) and configured to exchange heat with a heat source. The compressor unit (32) includes a compressor (37) disposed in a second casing (44) separate from the first casing, the heat exchanger unit and the compressor unit being fluidly connected via a first liquid refrigerant pipe (78) and a first gaseous refrigerant pipe (76). At least one indoor unit (50) has a second heat exchanger (53) configured to exchange heat with the space to be conditioned and being fluidly communicated to the heat exchanger unit and/or the compressor unit via a second liquid refrigerant pipe (79) and a second gaseous refrigerant pipe (77). The outer diameter of the first liquid refrigerant pipe is larger than the outer diameter of the second liquid refrigerant pipe and/or the outer diameter of the first gaseous refrigerant pipe is larger than the outer diameter of the second gaseous refrigerant pipe.

Abstract translation: 用于调节建筑物（70）内的空间（72）的空调器包括热源单元（30）和至少一个室内单元（50）。 热源单元（30）具有热交换器单元（31）和压缩机单元（32）。 热交换器单元（31）包括设置在第一壳体（2）中并被配置为与热源进行热交换的第一热交换器（5）。 压缩机单元（32）包括设置在与第一壳体分离的第二壳体（44）中的压缩机（37），热交换器单元和压缩机单元经由第一液体制冷剂管道（78）和第一气体 制冷剂管（76）。 至少一个室内单元（50）具有第二热交换器（53），其被配置为与要调节的空间进行热交换，并且经由第二液体制冷剂管道（79）流体地连通到热交换器单元和/或压缩机单元， 和第二气态制冷剂管道（77）。 第一液体制冷剂管的外径大于第二液体制冷剂管的外径，和/或第一气态制冷剂管的外径大于第二气态制冷剂管的外径。