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System for air-conditioning and hot-water supply

An air conditioning and hot water technology, applied in residential hot water supply systems, air conditioning systems, heating systems, etc., can solve problems such as violation of user comfort, low user comfort, and interruption of cooling operation

Active Publication Date: 2019-05-03
DAIKIN IND LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This means that the cooling operation is interrupted against the user setting, which is contrary to the comfort of the user
Also, the longer the undesired heating operation lasts, the less comfortable the user will be

Method used

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  • System for air-conditioning and hot-water supply
  • System for air-conditioning and hot-water supply
  • System for air-conditioning and hot-water supply

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0148] Example 1: The operation unit 101 is preferably configured to perform a cooling operation on all indoor units that have been turned on for cooling operation at the time of the hot water request after the hot water request has been made and before the heating operation starts.

[0149] In this application, "an indoor unit turned on for cooling operation" is any one of an indoor unit that has become a "thermal off" state and an indoor unit that is performing a cooling operation. "Indoor unit in cooling operation" has the same meaning as "indoor unit turned on for cooling operation".

[0150]Even if all the indoor units in the cooling operation have been changed to the "thermal off" state when the hot water request is generated, it is preferable to force the indoor units to perform the cooling operation. As a result, the cooling operation is forcibly performed in the heat-off state region, and the output of the cooling operation is increased. If one of the indoor units in...

example 2

[0151] Example 2: The operation unit 101 is preferably configured to perform the cooling operation on all the indoor units 120a, 120b after the hot water request has been generated and before the heating operation starts.

[0152] Even if only the indoor unit 120a is turned on for the cooling operation and the indoor unit 120b is turned off, not only the indoor unit 120a but also the indoor unit 120b are forced to perform the cooling operation. As described above, if the indoor unit 120a is turned on and has become the "thermal off" state, the cooling operation is also forcibly performed. Thus, all the indoor units in the system 10 are forced to perform the cooling operation, and the power of the cooling operation is increased. The indoor unit 120b that was previously turned off at the hot water request is forced to perform a cooling operation in the corresponding zone. Therefore, user uniformity can be ensured in any area even after the cooling operation has stopped and the ...

example 3

[0153] Example 3: The operation unit 101 is preferably configured to instruct the compressor unit 105 to output a command to increase its rotation frequency during the cooling operation and after the hot water request is generated. The operation unit 101 preferably stores a predetermined value to increase the rotation frequency by an amount. The compressor unit 105 creates a command based on the instruction of the operation unit 101 , and outputs the command to the driver of the motor of the compressor 111 .

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PUM

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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-watersupply unit (130) connected to the outdoor unit (110) so as to be arranged in parallel to the plurality of indoor units (120a, 120b) and including a refrigerant-water heat exchanger (131); and a controller (100) configured to monitor an occurrence of a request for hot-water supply from the hot-water supply unit (130) during the cooling operation performed at at least one of the plurality of indoorunits (120a, 120b), and then to start the heating operation in accordance with the hot-water request; wherein the controller (100) is further configured to monitor an occurrence of a request from anyone of the plurality of indoor units (120a, 120b); and the controller (100) is further configured to resume said cooling operation where said request is an increase request for an increase of load ofsaid cooling operation.

Description

technical field [0001] The invention relates to a system for air conditioning and hot water supply equipped with a heat pump. Background technique [0002] EP 2 653 805 A1 proposes a system for air conditioning and hot water supply, which is equipped with a heat pump and is capable of simultaneously performing air conditioning operation and hot water supply operation. The system includes: an outdoor unit having a compressor and an outdoor heat exchanger; at least one indoor unit connected to the outdoor unit and having an indoor heat exchanger; and at least one hot water supply unit connected to the outdoor unit to communicate with the outdoor unit. The indoor units are arranged in parallel. The hot water supply unit includes a refrigerant-water heat exchanger. [0003] The above-mentioned system disclosed in EP 2 653 805 A1 performs a cooling operation and a heating operation. During the cooling operation, the hot water supply unit cools water. During the heating operat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24D11/02F24D17/02F24D19/10F24F3/06
CPCF24D11/0214F24D17/02F24F3/06F24D2200/12F24F2221/183F24F11/30F24F1/0007F24F1/14
Inventor 千头秀雄T·科森斯
Owner DAIKIN IND LTD