CN107062967A - Liquid medium heat-storing device and liquid medium heat-storing method - Google Patents
Liquid medium heat-storing device and liquid medium heat-storing method Download PDFInfo
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- CN107062967A CN107062967A CN201611255175.2A CN201611255175A CN107062967A CN 107062967 A CN107062967 A CN 107062967A CN 201611255175 A CN201611255175 A CN 201611255175A CN 107062967 A CN107062967 A CN 107062967A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The present invention provides a kind of liquid medium heat-storing device and liquid medium heat-storing method, and liquid medium heat-storing device includes：Heat storage can body (1), fixed dam (2), slide damper (3), rotary shaft (4), the 1st pump housing (5) and the 2nd pump housing (6)；When the 1st pump housing (5) injects heat-storage medium into the 1st cavity, or, when the 2nd pump housing (6) injects heat-storage medium into the 2nd cavity, because heat-storage medium has certain density in itself, the slide damper (3) can be promoted to carry out counterclockwise or rotate clockwise around the rotary shaft (4) automatically, until the liquid level and the level balance of the 2nd cavity of the 1st cavity, realize the pressure balance in whole tank body.Advantage is：Initial outlay is low；Tank body utilization rate and heat-storage medium utilization rate are high；Heat waste is reduced；Circulating pump expends electric power and substantially reduced；Protective gas is using substantially reducing.
Description
Technical field
The present invention relates to a kind of heat-storing device, and in particular to a kind of liquid medium heat-storing device and liquid medium heat accumulation side
Method.
Background technology
The raising of shortage and people to environmental quality requirement with conventional energy resource, it is how sufficiently effective using following
Two kinds of energy turn into the focus that people study：The first, regenerative resource particularly solar energy；Second, industrial production is produced
A large amount of waste heats.
During using solar energy or industrial exhaust heat, the subject matter existed is the unstability of energy supply.For
Overcome this kind of defect, the stability of regenerative resource or industrial exhaust heat output can be effectively increased using energy-storage system.
Sensible heat of fluid heat reservoir, as a visual plant of existing energy-storage system, is usually double tank heat reservoirs, i.e.,：
Including a cold tank and a hot tank；Heat-conducting medium conveying is realized by circulating pump and exchanged heat.
But, there is a series of problems in double tank heat reservoirs, including：(1) investment of double tanks is big, in running always
There is a situation where tank body utilization rate 50%；(2) the problem of can not reaching tank bottom due to circulating pump, causes tank bottom part heat-storage medium
It can not utilize, heat-storage medium utilization rate is low；(3) area of dissipation of double tanks is big, supporting insulation material, electric tracing, level sensing
Device, temperature sensor consumption are double；(4) existing in double tank charge and discharge thermal process in 2 tank volume changes, General System needs nitrogen
Gas shielded atmosphere, can consume a large amount of nitrogen.
The content of the invention
The defect existed for prior art, the present invention provides a kind of liquid medium heat-storing device and liquid medium heat accumulation
Method, can effectively solve the above problems.
The technical solution adopted by the present invention is as follows：
The present invention provides a kind of liquid medium heat-storing device, including：Heat storage can body (1), fixed dam (2), slip gear
Plate (3), rotary shaft (4), the 1st pump housing (5) and the 2nd pump housing (6)；
The heat storage can body (1) includes pot sidewall, roof and the bottom wall of tubular, and the roof is sealed in the pot sidewall
Top, the bottom wall is sealed in the bottom of the pot sidewall；
The rotary shaft (4) is fixedly mounted in the shaft core position of the heat storage can body (1)；Also, the rotary shaft (4)
Top and the lower surface sealing of the roof are fixed；The bottom of the rotary shaft (4) and the upper surface sealing of the bottom wall are fixed；
The fixed dam (2) is vertically arranged, and its left end and the rotary shaft (4) are sealed and fixed, its right-hand member with it is described
The inner wall sealing of pot sidewall is fixed, and its top and the lower surface sealing of the roof are fixed, its bottom and the upper table of the bottom wall
Face sealing is fixed；
The slide damper (3) is vertically arranged, and its left end and the rotatable setting of the rotary shaft (4) sealing, its right-hand member
Slidably set with the inner wall sealing of the pot sidewall；Its top and the lower surface sealing of the roof are slidably set, its bottom
The upper surface sealing with the bottom wall is held slidably to set；
By the slide damper (3) and the fixed dam (2), the internal cavity of the heat storage can body (1) is drawn
It is divided into two independently divided cavitys, the 1st cavity and the 2nd cavity is designated as respectively；Wherein, the 1st cavity refers to described slide and kept off
The sectorial cavity that the inner side of plate (3), the inner side of the fixed dam (2) and the corresponding roof and the bottom wall are surrounded；
2nd cavity refer to the outside of the slide damper (3), the outside of the fixed dam (2) and the corresponding roof and
The sectorial cavity that the bottom wall is surrounded；
Inner side and outer side in the fixed dam (2), is fixedly mounted the 1st pump housing (5) and the 2nd pump housing respectively
(6) the 1st pump housing (5) is located at the 1st cavity, the 2nd pump housing (6) is located at the 2nd cavity, also, it is described
The bottom inlet of 1st pump housing (5) and the bottom inlet of the 2nd pump housing (6) are less than setting apart from the distance of the bottom wall
Threshold value；
When the 1st pump housing (5) injects heat-storage medium into the 1st cavity, or, when the 2nd pump housing (6) is to institute
When stating injection heat-storage medium in the 2nd cavity, because heat-storage medium has certain density in itself, the slide damper can be promoted automatically
(3) carry out counterclockwise or rotate clockwise around the rotary shaft (4), until the liquid level and the 2nd cavity of the 1st cavity
Level balance, realizes the pressure balance in whole tank body.
It is preferred that, when the 1st cavity is hot side space, the 2nd cavity is cold side space；Or, when the described 1st
When cavity is cold side space, the 2nd cavity is hot side space.
It is preferred that, the position that the slide damper (3) and the pot sidewall, the roof and the bottom wall are in contact is adopted
The chip architecture of the spring of height is compensated with automatic, and then realizes the seal isolation of the 1st cavity and the 2nd cavity.
The present invention also provides a kind of liquid medium heat-storing method according to above-mentioned liquid medium heat-storing device, if the 1st chamber
Body is hot side space, and the 2nd cavity is cold side space；1st pump housing (5) is hot side pump；2nd pump housing (6) is cold side pump；
Cold medium is stored in cold side space, heat accumulation process comprises the following steps：
Heat accumulation process is：Start cold side pump；Cold side pump extracts cold medium from cold side space, and passes through the output of cold side pump
Pipeline, cold medium is transported to by target flow the first inlet of heat exchanger；
Heat exchanger heats cold medium to design temperature, and the cold medium for absorbing heat is changed into thermal medium；Thermal medium flows to hot side
Space；Heat in the form of sensible heat to be stored in heat storage can, with the progress of heat accumulation process, and cold medium is gradually decreased, thermal medium
Gradually increase；Also, during cold medium is outwards conveyed, and, it is sliding during thermal medium injects to hot side space
Dynamic baffle plate is automatic in real time to carry out counterclockwise or rotates clockwise around rotary shaft (4), makes the volume of the 1st cavity and the appearance of the 2nd cavity
Product real-time change, but the liquid level of the 1st cavity and the level balance of the 2nd cavity are kept in real time, realize that the pressure in whole tank body is put down
Weighing apparatus；
Thermal medium is stored in hot side space, exothermic process comprises the following steps：
Exothermic process is：Start hot side pump；Hot side pump extracts thermal medium out of hot side space, and passes through the output of hot side pump
Thermal medium is transported to the second inlet of heat exchanger by pipeline by target flow；
Heat exchanger cools down thermal medium to design temperature, and exothermic thermal medium is changed into cold medium；Cold medium flows to cold side
Space (8)；With the progress of exothermic process, thermal medium is gradually decreased, and cold medium gradually increases；Also, it is outwards defeated in thermal medium
During sending, and, during cold medium is injected to cold side space, slide damper enters around rotary shaft (4) automatically in real time
Row is counterclockwise or rotates clockwise, and makes the volume of the 1st cavity and the volume real-time change of the 2nd cavity, but keeps the 1st cavity in real time
Liquid level and the 2nd cavity level balance, realize the pressure balance in whole tank body.
The liquid medium heat-storing device and liquid medium heat-storing method that the present invention is provided have advantages below：
(1) it is that sensible heat of fluid heat storage function can be achieved only with 1 heat storage can, so as to reduce initial outlay, improves tank body
Utilization rate；
(2) in the final stage of heat accumulation or exothermic process, medium cross-section product very little, bottom in refrigerant or heating agent correspondence covering of the fan
Unavailable dielectric capacity is " sectional area * pumps are apart from tank body ground level ", and sectional area is small, not using media quantity significantly
Reduce, so as to effectively improve heat-storage medium utilization rate；
(3) heat storage can quantity is reduced, and area of dissipation is reduced, heat waste reduction.
(4) heat-storage medium has certain density in itself, when medium is sent into not homonymy by circulating pump, and it can automatically promote and slide
Baffle plate is moved, until both sides level balance, it is ensured that the pressure balance in whole tank body；Refrigerant and heating agent both sides liquid level equilibrium, are followed
Ring pump expends electric power and substantially reduced；
(5) medium volume change is substantially reduced relative to double tank heat accumulations in tank body, and protective gas (nitrogen etc.) is using significantly
Reduction.
Brief description of the drawings
The internal structure schematic diagram for the liquid medium heat-storing device that Fig. 1 provides for the present invention；
The external structure schematic diagram for the liquid medium heat-storing device that Fig. 2 provides for the present invention；
The side sectional view for the liquid medium heat-storing device that Fig. 3 provides for the present invention；
Slide damper rotates counterclockwise schematic diagram in the liquid medium heat-storing device that Fig. 4 provides for the present invention；
Slide damper rotates clockwise schematic diagram in the liquid medium heat-storing device that Fig. 5 provides for the present invention.
Embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect are more clearly understood, below in conjunction with
Drawings and Examples, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to
The present invention is explained, is not intended to limit the present invention.
With reference to Fig. 1-Fig. 5, the present invention provides a kind of liquid medium heat-storing device, including：Heat storage can body 1, fixed dam
2nd, slide damper 3, rotary shaft 4, the 1st pump housing 5 and the 2nd pump housing 6；
Heat storage can body 1 includes pot sidewall, roof and the bottom wall of tubular, and roof is sealed in the top of pot sidewall, and bottom wall is close
It is enclosed in the bottom of pot sidewall；
Rotary shaft 4 is fixedly mounted in the shaft core position of heat storage can body 1；Also, the top of rotary shaft 4 and the lower surface of roof
Sealing is fixed；The bottom of rotary shaft 4 and the upper surface sealing of bottom wall are fixed；
Fixed dam 2 is vertically arranged, and its left end is sealed with rotary shaft 4 and fixed, the inner wall sealing of its right-hand member and pot sidewall
Fixed, the lower surface sealing of its top and roof is fixed, and the upper surface sealing of its bottom and bottom wall is fixed；
Slide damper 3 is vertically arranged, and its left end and rotary shaft 4 seal rotatable setting, its right-hand member and pot sidewall it is interior
Wall sealing is slidably set；The lower surface sealing of its top and roof is slidably set, the upper surface sealing of its bottom and bottom wall
Slidably set；
By slide damper 3 and fixed dam 2, the internal cavity of heat storage can body 1 is divided into independently divided two
Cavity, is designated as the 1st cavity and the 2nd cavity respectively；Wherein, the 1st cavity refer to the inner side of slide damper 3, fixed dam 2 inner side with
And the sectorial cavity that corresponding roof and bottom wall are surrounded；2nd cavity refer to the outside of slide damper 3, the outside of fixed dam 2 and
The sectorial cavity that corresponding roof and bottom wall are surrounded；
In the inner side and outer side of fixed dam 2, the 1st pump housing 5 and the 2nd pump housing 6 are fixedly mounted respectively, is located at the 1st pump housing 5
1st cavity, makes the 2nd pump housing 6 be located at the 2nd cavity, also, the bottom inlet and the bottom inlet of the 2nd pump housing 6 of the 1st pump housing 5
Distance apart from bottom wall is less than given threshold；
When the 1st pump housing 5 injects heat-storage medium into the 1st cavity, or, when the 2nd pump housing 6 injects heat accumulation into the 2nd cavity
During medium, due to heat-storage medium in itself have certain density, can automatically promote slide damper 3 around rotary shaft 4 carry out counterclockwise or
Rotate clockwise, until the liquid level and the level balance of the 2nd cavity of the 1st cavity, realize the pressure balance in whole tank body.
In practical application, when the 1st cavity is hot side space, the 2nd cavity is cold side space；Or, when the 1st cavity is cold
During the space of side, the 2nd cavity is hot side space.That is, division of the present invention to the 1st cavity and the 2nd cavity is not intended to limit, only
It is cold side space to want any one, and another is hot side space.
In addition, the position that slide damper 3 and pot sidewall, roof and bottom wall are in contact, using the spring of automatic compensation height
Chip architecture, and then realize the generation of the seal isolation of the 1st cavity and the 2nd cavity, effectively reduction refrigerant and heating agent mixing.
Fixed dam and slide damper are made using good insulation material, play the effect of isolation refrigerant and the heating agent temperature difference
Really.
The present invention also provides a kind of liquid medium heat-storing method according to above-mentioned liquid medium heat-storing device, retouches for convenience
State, only using the 1st cavity as hot side space, the 2nd cavity is cold side space；1st pump housing 5 is hot side pump；2nd pump housing 6 is cold side pump
Exemplified by be introduced.It will be understood by those skilled in the art that can also be using the 1st cavity as cold side space, the 2nd cavity is that hot side is empty
Between；1st pump housing 5 is cold side pump, and the 2nd pump housing 6 realizes that its principle is identical with principle described below, herein no longer for hot side pump
Repeat.
Cold medium is stored in cold side space, heat accumulation process comprises the following steps：
Heat accumulation process is：Start cold side pump；Cold side pump extracts cold medium from cold side space, and passes through the output of cold side pump
Pipeline, cold medium is transported to by target flow the first inlet of heat exchanger；
Heat exchanger heats cold medium to design temperature, and the cold medium for absorbing heat is changed into thermal medium；Thermal medium flows to hot side
Space；Heat in the form of sensible heat to be stored in heat storage can, with the progress of heat accumulation process, and cold medium is gradually decreased, thermal medium
Gradually increase；Also, during cold medium is outwards conveyed, and, it is sliding during thermal medium injects to hot side space
Move baffle plate to carry out counterclockwise or rotate clockwise around rotary shaft automatically in real time, make the volume of the 1st cavity and the volume reality of the 2nd cavity
Shi Bianhua, but the liquid level of the 1st cavity and the level balance of the 2nd cavity are kept in real time, realize the pressure balance in whole tank body；
Thermal medium is stored in hot side space, exothermic process comprises the following steps：
Exothermic process is：Start hot side pump；Hot side pump extracts thermal medium out of hot side space, and passes through the output of hot side pump
Thermal medium is transported to the second inlet of heat exchanger by pipeline by target flow；
Heat exchanger cools down thermal medium to design temperature, and exothermic thermal medium is changed into cold medium；Cold medium flows to cold side
Space；With the progress of exothermic process, thermal medium is gradually decreased, and cold medium gradually increases；Also, outwards conveyed in thermal medium
During, and, during cold medium is injected to cold side space, slide damper is automatic in real time to be carried out counterclockwise around rotary shaft
Or rotate clockwise, make the volume of the 1st cavity and the volume real-time change of the 2nd cavity, but keep in real time the 1st cavity liquid level and
The level balance of 2nd cavity, realizes the pressure balance in whole tank body.
The liquid medium heat-storing device and liquid medium heat-storing method that the present invention is provided have advantages below：
(1) it is that sensible heat of fluid heat storage function can be achieved only with 1 heat storage can, so as to reduce initial outlay, improves tank body
Utilization rate；
(2) in the final stage of heat accumulation or exothermic process, medium cross-section product very little, bottom in refrigerant or heating agent correspondence covering of the fan
Unavailable dielectric capacity is " sectional area * pumps are apart from tank body ground level ", and sectional area is small, not using media quantity significantly
Reduce, so as to effectively improve heat-storage medium utilization rate；
(3) heat storage can quantity is reduced, and area of dissipation is reduced, heat waste reduction.
(4) heat-storage medium has certain density in itself, when medium is sent into not homonymy by circulating pump, and it can automatically promote and slide
Baffle plate is moved, until both sides level balance, it is ensured that the pressure balance in whole tank body；Refrigerant and heating agent both sides liquid level equilibrium, are followed
Ring pump expends electric power and substantially reduced；
(5) medium volume change is substantially reduced relative to double tank heat accumulations in tank body, and protective gas (nitrogen etc.) is using significantly
Reduction.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
Depending on protection scope of the present invention.
Claims (4)
1. a kind of liquid medium heat-storing device, it is characterised in that including：Heat storage can body (1), fixed dam (2), slide damper
(3), rotary shaft (4), the 1st pump housing (5) and the 2nd pump housing (6)；
The heat storage can body (1) includes pot sidewall, roof and the bottom wall of tubular, and the roof is sealed in the top of the pot sidewall
End, the bottom wall is sealed in the bottom of the pot sidewall；
The rotary shaft (4) is fixedly mounted in the shaft core position of the heat storage can body (1)；Also, the top of the rotary shaft (4)
Seal and fix with the lower surface of the roof；The bottom of the rotary shaft (4) and the upper surface sealing of the bottom wall are fixed；
The fixed dam (2) is vertically arranged, and its left end is sealed with the rotary shaft (4) and fixed, its right-hand member and the tank side
The inner wall sealing of wall is fixed, and its top and the lower surface sealing of the roof are fixed, and its bottom and the upper surface of the bottom wall are close
Sealing is determined；
The slide damper (3) is vertically arranged, and its left end and the rotatable setting of the rotary shaft (4) sealing, its right-hand member and institute
The inner wall sealing for stating pot sidewall is slidably set；The lower surface sealing of its top and the roof is slidably set, its bottom with
The upper surface sealing of the bottom wall is slidably set；
By the slide damper (3) and the fixed dam (2), the internal cavity of the heat storage can body (1) is divided into
Two independently divided cavitys, are designated as the 1st cavity and the 2nd cavity respectively；Wherein, the 1st cavity refers to the slide damper (3)
Inner side, the sectorial cavity that surrounds of the inner side of the fixed dam (2) and the corresponding roof and the bottom wall；Described
2 cavitys refer to the outside of the slide damper (3), the outside of the fixed dam (2) and the corresponding roof and the bottom
The sectorial cavity that wall is surrounded；
Inner side and outer side in the fixed dam (2), is fixedly mounted the 1st pump housing (5) and the 2nd pump housing (6) respectively,
The 1st pump housing (5) is located at the 1st cavity, the 2nd pump housing (6) is located at the 2nd cavity, also, the described 1st
The bottom inlet of the pump housing (5) and the bottom inlet of the 2nd pump housing (6) are less than setting threshold apart from the distance of the bottom wall
Value；
When the 1st pump housing (5) injects heat-storage medium into the 1st cavity, or, when the 2nd pump housing (6) is to described
In 2 cavitys during injection heat-storage medium, because heat-storage medium has certain density in itself, the slide damper (3) can be promoted automatically
Carry out counterclockwise or rotate clockwise around the rotary shaft (4), until the liquid level and the liquid of the 2nd cavity of the 1st cavity
Face balance, realizes the pressure balance in whole tank body.
2. liquid medium heat-storing device according to claim 1, it is characterised in that when the 1st cavity is hot side space
When, the 2nd cavity is cold side space；Or, when the 1st cavity is cold side space, the 2nd cavity is that hot side is empty
Between.
3. liquid medium heat-storing device according to claim 1, it is characterised in that the slide damper (3) and the tank
The position that side wall, the roof and the bottom wall are in contact, using the chip architecture of the spring of automatic compensation height, and then is realized described
The seal isolation of 1st cavity and the 2nd cavity.
4. a kind of liquid medium heat-storing method of liquid medium heat-storing device according to claim any one of 1-3, it is special
Levy and be, if the 1st cavity is hot side space, the 2nd cavity is cold side space；1st pump housing (5) is hot side pump；2nd pump housing (6) is
Cold side pump；
Cold medium is stored in cold side space, heat accumulation process comprises the following steps：
Heat accumulation process is：Start cold side pump；Cold side pump extracts cold medium from cold side space, and passes through the efferent duct of cold side pump
Road, cold medium is transported to by target flow the first inlet of heat exchanger；
Heat exchanger heats cold medium to design temperature, and the cold medium for absorbing heat is changed into thermal medium；Thermal medium flows to hot side space；
Heat in the form of sensible heat to be stored in heat storage can, with the progress of heat accumulation process, and cold medium is gradually decreased, and thermal medium gradually increases
It is many；Also, during cold medium is outwards conveyed, and, during thermal medium injects to hot side space, slide damper
It is automatic in real time to carry out counterclockwise or rotate clockwise around rotary shaft, the volume of the 1st cavity and the volume of the 2nd cavity is become in real time
Change, but keep the liquid level of the 1st cavity and the level balance of the 2nd cavity in real time, realize the pressure balance in whole tank body；
Thermal medium is stored in hot side space, exothermic process comprises the following steps：
Exothermic process is：Start hot side pump；Hot side pump extracts thermal medium out of hot side space, and passes through the output channel of hot side pump
Thermal medium is transported to the second inlet of heat exchanger by target flow；
Heat exchanger cools down thermal medium to design temperature, and exothermic thermal medium is changed into cold medium；Cold medium flows to cold side space；
With the progress of exothermic process, thermal medium is gradually decreased, and cold medium gradually increases；Also, the process outwards conveyed in thermal medium
In, and, during cold medium is injected to cold side space, slide damper is automatic in real time counterclockwise or suitable around rotary shaft progress
Hour hands are rotated, and make the volume of the 1st cavity and the volume real-time change of the 2nd cavity, but keep the liquid level and the 2nd of the 1st cavity in real time
The level balance of cavity, realizes the pressure balance in whole tank body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611255175.2A CN107062967A (en) | 2016-12-30 | 2016-12-30 | Liquid medium heat-storing device and liquid medium heat-storing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611255175.2A CN107062967A (en) | 2016-12-30 | 2016-12-30 | Liquid medium heat-storing device and liquid medium heat-storing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915972A (en) * | 2019-03-11 | 2019-06-21 | 深圳达实智能股份有限公司 | A kind of air-conditioner energy-accumulation device and air-conditioner energy-accumulation control method |
| CN110868900A (en) * | 2018-02-13 | 2020-03-06 | 深圳市赫兹科技有限公司 | Sweeping robot and cleaning mechanism thereof |
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| CN203719492U (en) * | 2014-01-02 | 2014-07-16 | 上海电气集团股份有限公司 | Single-tank fused salt heat storage device in distributed microgrid |
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