Peak load shifting via thermal energy storage using a thermosyphon
US-2016238265-A1 · Aug 18, 2016 · US
Regenerative air conditioner
US10539335B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10539335-B2 |
| Application number | US-201515535529-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 24, 2015 |
| Priority date | Dec 26, 2014 |
| Publication date | Jan 21, 2020 |
| Grant date | Jan 21, 2020 |
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- Title
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Abstract
Official abstract text for this publication.
To avoid decline in the efficiency of a compressor at a low load, the thermal storage air conditioner has an operation controller which, if a rotational speed of the compressor is slowed down to a predetermined lower reference value in a simple cooling operation, switches operation of the thermal storage air conditioner from the simple cooling operation to a cooling and cold thermal energy storage operation to increase the rotational speed of the compressor. During the simple cooling operation refrigerant is condensed in the outdoor heat exchanger and evaporates in the indoor heat exchanger, and during a cooling and cold thermal energy storage operation the refrigerant is condensed in the outdoor heat exchanger, evaporates in the indoor heat exchanger, and the thermal storage medium in the thermal storage section is cooled by the refrigerant.
First claim
Opening claim text (preview).
The invention claimed is: 1. A thermal storage air conditioner, comprising: a refrigerant circuit which has a compressor, an outdoor heat exchanger, and an indoor heat exchanger and performs a refrigeration cycle; a thermal storage section which has a thermal storage medium and exchanges heat between the thermal storage medium and a refrigerant of the refrigerant circuit; and a controller configured to control the refrigerant circuit such that the thermal storage air conditioner performs a simple cooling operation in which in the refrigerant circuit, the refrigerant is condensed in the outdoor heat exchanger and evaporates in the indoor heat exchanger; and a cooling and cold thermal energy storage operation in which in the refrigerant circuit, the refrigerant is condensed in the outdoor heat exchanger and evaporates in the indoor heat exchanger, and in which the thermal storage medium in the thermal storage section is cooled by the refrigerant; and switch, if a rotational speed of the compressor is slowed down to a predetermined lower reference value during the simple cooling operation, operation of the thermal storage air conditioner from the simple cooling operation to the cooling and cold thermal energy storage operation to increase the rotational speed of the compressor. 2. The thermal storage air conditioner of claim 1 , wherein the controller is further configured to switch the operation of the thermal storage air conditioner from the cooling and cold thermal energy storage operation to the simple cooling operation to reduce the rotational speed of the compressor if the rotational speed of the compressor increases to a predetermined upper reference value during the cooling and cold thermal energy storage operation. 3. The thermal storage air conditioner of claim 1 , wherein when the controller switches the operation of the thermal storage air conditioner from the simple cooling operation to the cooling and cold thermal energy storage operation, the rotational speed of the compressor is increased by a value equal to a lowest rotational speed of the compressor. 4. The thermal storage air conditioner of claim 2 , wherein when the controller switches the operation of the thermal storage air conditioner from the simple cooling operation to the cooling and cold thermal energy storage operation, the rotational speed of the compressor is increased by a value equal to a lowest rotational speed of the compressor.
Assignees
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Classifications
indoor unit in circulation with outdoor unit in first operation mode, indoor unit in circulation with an other heat exchanger in second operation mode or outdoor unit in circulation with an other heat exchanger in third operation mode · CPC title
two pipes connecting the outdoor side to the indoor side with multiple indoor units · CPC title
with bypasses · CPC title
in parallel arrangements · CPC title
using one three-way valve · CPC title
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Frequently asked questions
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- What does patent US10539335B2 cover?
- To avoid decline in the efficiency of a compressor at a low load, the thermal storage air conditioner has an operation controller which, if a rotational speed of the compressor is slowed down to a predetermined lower reference value in a simple cooling operation, switches operation of the thermal storage air conditioner from the simple cooling operation to a cooling and cold thermal energy stor…
- Who is the assignee on this patent?
- Daikin Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification F24F5/001. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 21 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).