Daikin Industries, Ltd. is a Japanese multinational air conditioner manufacturing company headquartered in Osaka. It has operations in Japan, China, Australia, India, Southeast Asia, Europe, and North America.Daikin codeveloped a R-410A refrigerant with Carrier and is an innovator in the Split System Air Conditioning Market, and is the inventor of Variable Refrigerant Flow air conditioning systems . Wikipedia.


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Grant
Agency: European Commission | Branch: FP7 | Program: CP-SoU | Phase: ENERGY.2013.8.8.1 | Award Amount: 42.87M | Year: 2014

City-zen deals with the development of the city of the future. The project has three major goals, 1- to realize more effective collaboration models and a methodology for development of smart cities, 2- to connect with industry, and have them develop technology to the benefit of smart cities and 3- to showcase to society ambitious pilot projects. Main idea for this project is that after successful implementations in topics such as district heating, energy grids, local energy generation, energy efficiency for housing, now it is time for the next big step: integrated flexible open infrastructures. The approach taken is the set-up of stakeholder teams in the demonstrator cities, to accelerate the realization of energy-efficient city development. This effort is supported by technology teams including industrial parties. Workshops aiming at decreasing the gap between innovation and implementation will be organized and knowledge-disclosing material will be developed by specialized working groups in retrofitting, smart grids, and heating and cooling. This approach holds for both technology and process improvement. The demonstrators in Amsterdam and Grenoble include retrofitting 105000 m2 of housing to levels down to 53 kWh/m2, showing average savings of the order of 80%. Furthermore they include fully-functional smart grid development, electricity storage demonstrators, free cooling schemes and district heating efficiency improvements. The City-zen project recognizes the key position of citizens, so ample attention is paid to dissemination and education of this group. Serious gaming is included as part of the work, as well as a roadshow bringing the results of the project right at the doorsteps of decision makers in other cities. Extensive monitoring of all buildings and installations is included. All demonstrators together have an estimated impact of 59000 tonne/year CO2 reduction. Amsterdam and Grenoble CO2 reduction goals for 2050 are 80% reduction.


Patent
Daikin Industries Ltd and Daikin | Date: 2016-11-30

[Problem] To precisely control the temperature of each temperature-regulating device in a fluid-type temperature-regulating unit for supplying heat or cold to a plurality of temperature-regulating devices. [Solution] A fluid-type temperature-regulating unit 10 has a fluid inlet 22 and a fluid outlet 21, and is provided with a heat exchanger 20, first recovery port 12 for recovering fluid from a first temperature-regulating device, a first recovery channel 32 for connecting the fluid inlet 22 and the first recovery port 12, a first pump 41 which is provided to the first recovery channel 32 and which discharges fluid from a first discharge port 41 b, a second recovery port 14 for recovering fluid from a second temperature-regulating device, a second recovery channel 34 for connecting the fluid inlet 22 and the second recovery port 14, and a second pump 42 which is provided to the second recovery channel 34 and which discharges fluid from a second discharge port 42b. The first discharge port 41 b and the second discharge port 42b are both in communication with the fluid inlet 22 so as to allow the fluid to merge.


Patent
Daikin Industries Ltd and Daikin | Date: 2016-05-04

First and second adsorption heat exchangers (101, 102) are provided for first and second heat exchange chambers (S11, S12), respectively, and each interchangeably function as an evaporator or a condenser. If the first adsorption heat exchanger (101) functions as an evaporator in the first heat exchange chamber (S11), a first adsorption block (301) is arranged at a position downstream of the first adsorption heat exchanger (101). If the second adsorption heat exchanger (102) functions as an evaporator in the second heat exchange chamber (S12), a second adsorption block (302) is arranged at a position downstream of the second adsorption heat exchanger (102).


Set for assembling a heat source unit of an air conditioner at the site of the air conditioner, the set comprising a heat source heat exchanger module (2) having a first casing (4), a heat source heat exchanger (3) and a compressor module port(6) fluidly communicated with the heat source heat exchanger, a compressor module (1) having a second casing (8) separate from the first casing, a compressor (9) and a heat source heat exchanger module port(10) fluidly communicated with the compressor, wherein the heat source heat exchanger module and the compressor module are fluidly communicatable via the compressor module port and the heat source heat exchanger port, a main board (12) comprising a control logic of the air conditioner and a first electric connector, wherein each of the modules has a circuit board (5) comprising a second electric connector, the circuit boards being configured for data communication with the main board upon electrical connection of the circuit boards and the main board via the first and second connectors. Further, a method for assembling a heat source unit of an air conditioner at the site of the air conditioner using the aforesaid set is suggested.


Patent
Daikin Industries Ltd and Daikin | Date: 2016-11-09

Disclosed herein is a heating device including a controller (90) configured to switch operation modes of the heating device from a first mode to a second mode, or vice versa. The first mode of operation includes an operation of allowing, while a heat source unit (20) is running, a heating medium heated by a heating heat exchanger (31) to flow through a heat storage tank (52) and then return to the heating heat exchanger (31). The second mode of operation includes an operation of allowing, while the heat source unit (20) is not running, the heating medium in the heat storage tank (52) to flow through an air-heating heat exchanger (51), be bypassed around the heating heat exchanger (31), and then return to the heat storage tank (52).


Patent
Daikin and Daikin Industries Ltd | Date: 2016-10-19

Air conditioner for conditioning a space (72) inside a building (70) comprising a heat source unit (30) having a heat exchanger unit (31) comprising a first heat exchanger (5) disposed in a first casing (2) and configured to exchange heat with a heat source and a compressor unit (32) comprising a compressor (37) disposed in a second casing (44) separate from the first casing and at least one indoor unit (50) having 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, wherein the heat exchanger unit (31) is disposed inside the building and fluidly communicated to the outside of the building.


Patent
Daikin and Daikin Industries Ltd | Date: 2016-10-19

Heat exchanger unit comprising: a casing (2) having a duct to be flown through by a fluid, a fan (20) disposed in the casing and configured to induce a flow of the fluid through the duct in a flow direction (F),a heat exchanger (5) being V-shaped in side view with an apex (8) at one end and an opening (12) at the opposite end, the heat exchanger being disposed in the duct with the apex directed towards the flow direction, wherein a line (CL) of the V-shaped heat exchanger in the side view and passing the apex extends horizontally, wherein the fan is disposed downstream of the heat exchanger in the flow direction.


The present invention suggests a compressor unit for an air conditioner comprising a compressor (37) disposed in a first casing (44), and first and second heat source heat exchanger unit ports (42, 43) configured to connect the compressor unit to a heat source heat exchanger (5) of a heat source heat exchanger unit (31) of the air conditioner, the heat source heat exchanger being disposed in a second casing (2) separate from the first casing and being configured to exchange heat with a heat source, first and second indoor unit ports (46, 47) configured to connect the compressor unit to an indoor heat exchanger (53) of at least one indoor unit (50) of the air conditioner, a first refrigerant piping (49) fluidly connecting the first heat source heat exchanger unit port (43) and the first indoor unit port (46), and a sub-cooling heat exchanger (40) disposed inside the first casing and fluidly connected to the first refrigerant piping for heat transfer with the refrigerant to be flown through the first refrigerant piping.


Patent
Daikin and Daikin Industries Ltd | Date: 2016-10-19

Heat exchanger unit (1) comprising a casing (2) defining a duct to be flown through by a fluid, a fan (20) disposed in the casing (2) and configured to induce a flow of the fluid through the duct in a flow direction (F), a heat exchanger (5) being V-shaped in side view with an apex (8) at one end and an opening (12) at the opposite end, the heat exchanger (5) being disposed in the duct with the opening (12) directed towards the flow direction (F), wherein a line (CL) passing the apex (8) of the V-shaped heat exchanger (5) in the side view extends horizontally, wherein the fan (20) is disposed downstream of the heat exchanger (5) in the flow direction (F).


Patent
Daikin Industries Ltd and Daikin | Date: 2016-11-30

To implement a low-cost configuration that accommodates increases in fluid volume in a fluid-type temperature-regulating unit for supplying heat or cold to a plurality of temperature-regulating devices. A fluid-type temperature-regulating unit (10) is provided with: a heat exchanger (20); a first feed channel (31), a first recovery channel (32), a second feed channel (33), and a second recovery channel (34) for connecting a first feed port (11), a first recovery port (12), a second feed port (13), and a second recovery port (14), respectively, to the heat exchanger (20); an expansion tank (45) and a first pump (41) provided to the first recovery channel (32); a second pump (42) provided to the second recovery channel; and a communication tube (38) for directing a portion of the fluid flowing through the second recovery channel to the expansion tank (45). The communication tube (38) induces a greater pressure loss than any of the first feed channel (31), the first recovery channel (32), the second feed channel (33), and the second recovery channel (34).

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