CN112728669A - Cold storage device, method and regional cold supply system - Google Patents

Cold storage device, method and regional cold supply system Download PDF

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Publication number
CN112728669A
CN112728669A CN202011599505.6A CN202011599505A CN112728669A CN 112728669 A CN112728669 A CN 112728669A CN 202011599505 A CN202011599505 A CN 202011599505A CN 112728669 A CN112728669 A CN 112728669A
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CN
China
Prior art keywords
liquid
cooling medium
cold
cooling
cavity
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Pending
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CN202011599505.6A
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Chinese (zh)
Inventor
胡勣
王朝晖
旷金国
明磊凌
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Shenzhen Qianhai Energy Technology Development Co ltd
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Shenzhen Qianhai Energy Technology Development Co ltd
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Priority to CN202011599505.6A priority Critical patent/CN112728669A/en
Publication of CN112728669A publication Critical patent/CN112728669A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
    • F24F2005/0032—Systems storing energy during the night
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Human Computer Interaction (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The invention discloses a cold accumulation device which comprises a cold accumulation part and a refrigerating unit. The cold accumulation part comprises a first main body and an ice accumulation piece, a first liquid accumulation cavity is arranged in the first main body and used for storing a first cooling medium, the ice accumulation piece is arranged in the first liquid accumulation cavity, a second liquid accumulation cavity is arranged in the ice accumulation piece and used for storing a second cooling medium, and the freezing point of the second cooling medium is lower than that of the first cooling medium. The refrigerating unit comprises a second main body, a third liquid storage cavity is arranged in the second main body, and the third liquid storage cavity is communicated with the second liquid storage cavity. Through the design, the first cooling medium frozen in the first liquid storage cavity and the first cooling medium not frozen exert the latent heat and the sensible heat of the first cooling medium, so that the cold storage efficiency of the cold storage equipment is effectively improved. The invention also discloses a cold accumulation method with the cold accumulation equipment. The invention also discloses an area cold supply system with the cold accumulation equipment.

Description

Cold storage device, method and regional cold supply system
Technical Field
The invention relates to the field of air conditioner cold supply, in particular to cold accumulation equipment, a cold accumulation method and a regional cold supply system.
Background
The regional cold supply system is a system which is used for preparing cold water at a cold storage device aiming at a building group in a certain region, conveying the cold water to each building through a transmission and distribution pipe network for heat exchange, and then supplying the cold water to users so as to meet the cold load requirements of the users.
At present, an ice storage technology is adopted in a regional cold supply system on a large scale, ice is made at night, ice is melted in the daytime, peak and valley electricity prices are utilized, peak load shifting and valley filling are utilized, and peak load of electric power is reduced. In the related art, the cold storage device often only utilizes the latent heat of the ice cold storage system, and does not fully utilize the sensible heat of the low-temperature water in the ice storage tank, so that the cold storage efficiency of the cold storage device is low.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a cold accumulation device which can fully utilize the sensible heat of the low-temperature water in the ice accumulation tank.
The invention also provides a cold accumulation method with the cold accumulation device.
The invention also provides an area cold supply system with the cold accumulation device.
A first aspect embodiment of the invention provides a cold storage apparatus comprising:
the cold accumulation part comprises a first main body and an ice accumulation piece, a first liquid accumulation cavity is arranged in the first main body and used for storing a first cooling medium, the ice accumulation piece is arranged in the first liquid accumulation cavity, a second liquid accumulation cavity is arranged in the ice accumulation piece and used for storing a second cooling medium, and the freezing point of the second cooling medium is lower than that of the first cooling medium;
the refrigerator unit is used for reducing the temperature of the second cooling medium and comprises a second main body, a third liquid storage cavity is arranged in the second main body and communicated with the second liquid storage cavity, and the second cooling medium can circularly flow between the second liquid storage cavity and the third liquid storage cavity.
The cold storage device provided by the embodiment of the invention has at least the following technical effects:
the ice storage part is arranged in the first liquid storage cavity, and the second cooling medium with the freezing point lower than that of the first cooling medium is introduced into the second liquid storage cavity, so that the first cooling medium in the first liquid storage cavity can be frozen near the ice storage part, and at the moment, the first cooling medium frozen in the first liquid storage cavity and the first cooling medium not frozen exert the latent heat and the sensible heat of the first cooling medium and the cold storage efficiency of the cold storage equipment is effectively improved.
A cold storage apparatus according to some embodiments of the invention, further comprising:
a first liquid supply member, wherein a first liquid supply channel is arranged in the first liquid supply member, the first liquid supply channel is respectively communicated with the second liquid storage cavity and the third liquid storage cavity, and the first liquid supply member is used for enabling the second cooling medium to flow into the second liquid storage cavity from the third liquid storage cavity through the first liquid supply channel;
and a first liquid return piece, wherein a first liquid return channel is arranged in the first liquid return piece, the first liquid return channel is respectively communicated with the second liquid storage cavity and the third liquid storage cavity, and the first liquid return piece is used for enabling the second cooling medium to flow back to the third liquid storage cavity from the second liquid storage cavity through the first liquid return channel.
A cold storage apparatus according to some embodiments of the invention, further comprising:
a second liquid supply part, wherein a second liquid supply channel is arranged in the second liquid supply part, the second liquid supply channel is communicated with the first liquid storage cavity, and the second liquid supply part is used for conveying the first cooling medium from the first liquid storage cavity to a user through the second liquid supply channel;
and a second liquid return piece, wherein a second liquid return channel is arranged in the second liquid return piece, the second liquid return channel is communicated with the first liquid storage cavity, and the second liquid return piece is used for conveying the first cooling medium from the user to the first liquid storage cavity through the second liquid supply channel.
According to some embodiments of the invention, the cold storage device further comprises a cold water supply pump, the cold water supply pump is arranged on the second liquid supply part, and the cold water supply pump is used for controlling the flow speed of the first cooling medium in the second liquid supply channel.
According to the cold storage apparatus of some embodiments of the present invention, the cold storage portion further includes a temperature sensor provided in the first liquid storage chamber, the temperature sensor being configured to acquire a temperature value of the first cooling medium.
According to the cold storage device of some embodiments of the present invention, the cold storage portion further includes an icing sensor and an ice thickness sensor, the icing sensor and the ice thickness sensor are both disposed in the first liquid storage chamber, the icing sensor is configured to detect an icing condition of an outer surface of the ice storage member, and the ice thickness sensor is configured to acquire an ice storage amount of the outer surface of the ice storage member.
A cold storage apparatus according to some embodiments of the invention, further comprising:
the refrigeration portion, the refrigeration portion includes cooling tower and cooling piece, the cooling piece is fixed in refrigerating unit, be provided with the fourth in the cooling piece and hold the liquid chamber, the fourth holds the liquid chamber and is used for storing third cooling medium, cooling tower is used for reducing third cooling medium's temperature, be provided with the cooling chamber in the cooling tower, the cooling chamber with the fourth holds the liquid chamber intercommunication, third cooling medium can the cooling chamber with the fourth holds circulation flow between the liquid chamber.
A cold storage apparatus according to some embodiments of the invention, further comprising:
a third liquid supply member, wherein a third liquid supply channel is arranged in the third liquid supply member, the third liquid supply channel is respectively communicated with the fourth liquid storage cavity and the cooling cavity, and the third liquid supply member is used for enabling a third cooling medium to flow into the fourth liquid storage cavity from the cooling cavity through the third liquid supply channel;
and a third liquid return piece, wherein a third liquid return channel is arranged in the third liquid return piece, the third liquid return channel is respectively communicated with the fourth liquid storage cavity and the cooling cavity, and the third liquid return piece is used for enabling the third cooling medium to flow back to the cooling cavity from the fourth liquid storage cavity through the third liquid return channel.
A second aspect embodiment of the invention provides a cold storage method comprising:
acquiring a temperature value of the first cooling medium;
acquiring a current time value;
acquiring the ice storage amount of the outer surface of the ice storage piece;
and controlling the refrigerating unit to start or stop working according to the temperature value, the current time value and/or the ice storage quantity.
The cold accumulation method provided by the embodiment of the invention has at least the following technical effects:
the working state of the refrigerating unit is controlled together by taking the temperature value of the first cooling medium, the current time value and the ice storage amount on the outer surface of the ice storage piece as judgment basis, and the cold storage efficiency of the cold storage equipment is further improved.
According to the cold storage method of some embodiments of the present invention, the controlling the refrigerator group to start or stop operating according to the temperature value, the current time value, and/or the ice bank amount includes:
if the temperature value is higher than a preset temperature value, controlling the refrigerating unit to start working;
if the temperature value is lower than the preset temperature value, the current time value is in a power utilization low-peak time period, and the ice storage amount is smaller than a preset amount, controlling the refrigerating unit to start working;
if the ice storage amount is larger than or equal to the preset amount, controlling the refrigerating unit to stop working;
and if the temperature value is lower than the preset temperature value and the current time value is in the peak time period of electricity utilization, controlling the refrigerating unit to stop working.
According to the cold storage method of some embodiments of the present invention, after the obtaining of the temperature value of the first cooling medium, further comprising:
and controlling the water supply and cooling pump to start or stop working according to the temperature value.
According to some embodiments of the present invention, after the controlling the operating state of the refrigerator group according to the temperature value, the current time value, and the ice storage amount, the cold storage method further comprises:
and controlling the refrigerating part to start or stop working according to the working state of the refrigerating unit.
An embodiment of a third aspect of the present invention provides an area cooling system comprising a cold storage apparatus according to an embodiment of the first aspect of the present invention as described above.
The area cooling system provided by the embodiment of the invention at least has the following technical effects:
by adopting the cold accumulation equipment, the cold accumulation proportion of the regional cold supply system is effectively improved, so that the investment is saved, the operating cost is reduced, and the economical efficiency is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic plan view of a cold storage device of an embodiment of the invention;
FIG. 2 is a flow chart of a cold storage method of an embodiment of the invention;
fig. 3 is a flow chart of a cold storage method according to another embodiment of the invention.
Reference numerals: the refrigerator comprises a cold accumulation part 100, a first main body 110, a first liquid storage cavity 111, an ice storage piece 120, a refrigerator unit 200, a second main body 210, a refrigeration part 300, a cooling piece 310, a cooling tower 320, a first liquid supply piece 411, a first liquid return piece 412, a second liquid supply piece 421, a second liquid return piece 422, a third liquid supply piece 431, a third liquid return piece 432, a cold water supply pump 440, a first through hole 511, a first through hole 512, a second through hole 521, a second through hole 522, a third through hole 531, a third through hole 532, a fourth through hole 541, a fourth through hole 542, a fifth through hole 551 and a fifth through hole 552.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
A cold storage device according to an embodiment of the present invention is described below with reference to fig. 1.
The cold storage apparatus according to the embodiment of the first aspect of the invention includes the cold storage portion 100 and the refrigerator group 200.
The cold accumulation part 100 includes a first main body 110 and an ice storage member 120, a first liquid storage cavity 111 is provided in the first main body 110, the first liquid storage cavity 111 is used for storing a first cooling medium, the ice storage member 120 is provided in the first liquid storage cavity 111, a second liquid storage cavity is provided in the ice storage member 120, the second liquid storage cavity is used for storing a second cooling medium, and a freezing point of the second cooling medium is lower than a freezing point of the first cooling medium. The refrigeration unit 200 is configured to reduce the temperature of the second cooling medium, and includes a second body 210, where a third liquid storage cavity is disposed in the second body 210, the third liquid storage cavity is communicated with the second liquid storage cavity, and the second cooling medium is capable of circulating between the second liquid storage cavity and the third liquid storage cavity.
Specifically, the cold storage portion 100 includes a first body 110 and at least one ice bank 120, a first liquid storage chamber 111 is provided in the first body 110, and the first liquid storage chamber 111 may have a square or spherical shape or the like as long as the ice bank 120 is provided therein. In the first liquid storage chamber 111, a first cooling medium is stored simultaneously, and the first cooling medium comes into contact with the ice bank 120, and when the first cooling medium is sufficiently large, the ice bank 120 can be completely submerged. The first cooling medium, which may be water or glycol solution, is delivered to the user, where it absorbs a certain amount of heat, increases its temperature, and then returns to the first liquid storage chamber 111, thereby circulating.
A second liquid storage chamber for storing a second cooling medium having a freezing point lower than that of the first cooling medium is provided in the ice bank 120, and for example, when the first cooling medium is water, the second cooling medium may be an aqueous glycol solution; or when the first cooling medium is a 2% strength glycol solution, the second cooling medium may be a 10% strength glycol solution. It will be appreciated that the design is such that when the temperature of the second cooling medium is below the freezing point of the first cooling medium, the first cooling medium near the outer surface of ice bank 120 will condense to a solid state, during which the solid first cooling medium will accumulate latent heat.
The refrigerator set 200 may be a screw chiller, a centrifugal chiller, or the like, and includes a second body 210, and a third reservoir chamber is provided in the second body 210. A certain amount of second cooling medium is also stored in the third liquid storage cavity, at least two first flow through holes are formed in the inner wall of the third liquid storage cavity, second flow through holes with the number equal to that of the first flow through holes are formed in the inner wall of the second liquid storage cavity, and the first flow through holes 521 are in butt joint, so that the third liquid storage cavity is communicated with the second liquid storage cavity, and the second cooling medium can circularly flow between the second liquid storage cavity and the third liquid storage cavity. The function of the refrigerator set 200 is to reduce the temperature of the second cooling medium flowing into the third liquid storage cavity to a preset temperature value, or to the temperature of the freezing point of the first cooling medium or below, and the second cooling medium cooled by the refrigerator set 200 flows into the second liquid storage cavity to cool the first cooling medium, and then flows back to the third liquid storage cavity, so as to circulate. The preset temperature value here refers to the maximum value of the actually required cooling temperature of the first cooling medium. It is understood that the refrigerating power of the refrigerating unit 200 is adjustable, and the temperature of the second cooling medium in the third accumulation chamber can be controlled according to actual conditions.
In a specific using process, in a peak time of daytime power consumption, when the temperature of the first cooling medium in the first liquid storage cavity 111 is higher than a preset temperature value, the refrigeration unit 200 starts to operate, at this time, the refrigeration unit 200 only needs to make the temperature of the second cooling medium lower than the preset temperature value, and the second cooling medium starts to circulate between the third liquid storage cavity and the second liquid storage cavity, so that the temperature of the first cooling medium in the first liquid storage cavity 111 is equal to or slightly lower than the preset temperature value.
During the night time with low peak power consumption, the refrigerator unit 200 starts to operate, and at this time, the refrigerator unit 200 needs to lower the temperature of the second cooling medium in the third liquid storage chamber to the freezing point temperature of the first cooling medium or below, so that the temperature of the first cooling medium in the first liquid storage chamber 111 gradually decreases, and starts to condense into a solid from the outer surface of the ice storage member 120, thereby storing latent energy. When the thickness of the solid first cooling medium on the outer surface of the ice storage member 120 reaches a predetermined amount, the refrigerating unit 200 stops working, and the cold storage portion 100 completes cold storage. In this case, the first liquid storage chamber 111 contains both the solid first cooling medium and the liquid first cooling medium.
When a customer needs to use the first cooling medium, the first cooling medium with the temperature value lower than the preset temperature value in the first liquid storage cavity 111 is conveyed to the user, after the first cooling medium is used by the user, the temperature of the first cooling medium is increased and returns to the first liquid storage cavity 111, and at the moment, the potential energy of the solid first cooling medium is utilized to cool the first cooling medium with the increased temperature, so that the temperature of the first cooling medium is reduced to the preset temperature value or below. In the process, the solid first cooling medium is continuously melted, and the cold storage device is in the first working mode.
When the solid first cooling medium in the first liquid storage cavity 111 is completely melted, the cold storage device is switched to the second working mode. At this stage, the temperature of the first cooling medium in the first liquid storage cavity 111 is still lower than the preset temperature value, so that the first cooling medium can be conveyed to a user, after the first cooling medium is used by the user, the first cooling medium with the increased temperature returns to the first liquid storage cavity 111, and at this time, the sensible heat of the liquid first cooling medium with the temperature lower than the preset temperature value is utilized to cool the first cooling medium with the increased temperature, so that the temperature of the first cooling medium is reduced to the preset temperature value or below.
When the temperature of the first cooling medium in the first liquid storage cavity 111 is higher than the preset temperature value, the delivery of the first cooling medium to the user is stopped. At this time, the refrigeration unit 200 starts to operate again, so that the temperature of the first cooling medium is lower than the preset temperature value.
It is understood that the refrigerator set 200 may continue to operate only during the night time period when the power consumption is low, so that the first cooling medium is solidified into a solid until the freezing thickness reaches a predetermined amount; and the operation is only carried out when the temperature of the first cooling medium is higher than the preset temperature value in the daytime peak power utilization period. The design effectively reduces the operating cost of the cold accumulation equipment.
Meanwhile, the design can fully utilize the latent heat of the solid first cooling medium and the sensible heat of the liquid first cooling medium with the temperature lower than the preset temperature value, effectively improves the cold storage proportion of the cold storage equipment, and improves the cold storage efficiency of the cold storage equipment.
Further, the preset temperature value and the preset quantity can be adjusted according to the actual supply and demand relationship, so that the cold accumulation equipment can adapt to more situations.
In some embodiments of the present invention, a first liquid supply part 411 and a first liquid return part 412 are further included.
The first liquid supply member 411 is provided with a first liquid supply channel therein, the first liquid supply channel is respectively communicated with the second liquid storage cavity and the third liquid storage cavity, and the first liquid supply member 411 is used for enabling the second cooling medium to flow into the second liquid storage cavity from the third liquid storage cavity through the first liquid supply channel. A first liquid return channel is arranged in the first liquid return part 412, the first liquid return channel is respectively communicated with the second liquid storage cavity and the third liquid storage cavity, and the first liquid return part 412 is used for enabling the second cooling medium to flow back to the third liquid storage cavity from the second liquid storage cavity through the first liquid return channel.
Specifically, the first liquid supply member 411 is in a pipe shape, a first liquid supply channel is disposed inside the first liquid supply member 411, the first liquid supply channel is provided with openings at two ends of the first liquid supply member 411, one end of the first liquid supply member 411 is fixed to the ice storage member 120, and the other end of the first liquid supply member 411 is fixed to the second body 210 of the refrigeration unit 200. The first liquid returning member 412 is in a pipe shape, and a first liquid returning channel is disposed inside the first liquid returning member 412, the first liquid returning channel is provided with openings at two ends of the first liquid returning member 412, one end of the first liquid returning member 412 is fixed to the ice storage member 120, and the other end of the first liquid returning member 412 is fixed to the second main body 210 of the refrigeration unit 200.
Two through holes, namely a first through hole, are arranged on the inner wall of the third liquid storage cavity and are named as a first through hole I511 and a first through hole II 512 respectively; two through holes, namely a second through hole, are arranged on the inner wall of the second liquid storage cavity and are named as a first second through hole 521 and a second through hole 522 respectively. The first liquid supply channel is respectively communicated with the first through hole I511 and the second through hole I521, and the first liquid return channel is respectively communicated with the first through hole II 512 and the second through hole II 522.
In practical use, when the refrigeration unit 200 starts to operate, the second cooling medium subjected to temperature reduction treatment in the third liquid storage cavity can flow into the first liquid supply channel from the first flow through hole one 511, flow to the second flow through hole one 521 through the first liquid supply channel, and flow into the second liquid storage cavity through the second flow through hole one 521. After the heat energy is exchanged with the first cooling medium, the second cooling medium with the increased temperature in the second liquid storage chamber flows into the first liquid return channel from the second through hole 522, flows to the second first through hole 512 through the first liquid return channel, and flows into the third liquid storage chamber through the second first through hole 512.
By such a design, a circulating flow of the second cooling medium between the second reservoir chamber and the third reservoir chamber is achieved.
Further, a plurality of ice storage members 120 are disposed in the first liquid storage cavity 111, each ice storage member 120 is provided with two second flow holes, at this time, one end of the first liquid supply member 411 is still fixed to the second main body 210, so that the first liquid supply passage is communicated with the first flow holes, the other end of the first liquid supply member 411 is divided into a plurality of branches, the number of the branches is the same as that of the ice storage members 120, each branch is communicated with one ice storage member 120, and branches of the first liquid supply passage are also disposed in the branches, and the branches of the first liquid supply passage are respectively communicated with one second flow hole. Accordingly, one end of the first liquid returning member 412 is still fixed to the second body 210, such that the first liquid returning channel is communicated with another first flow through hole of the second body 210, the other end of the first liquid returning member 412 is divided into a plurality of branches, the number of the branches is the same as the number of the ice storage members 120, each branch is communicated with one ice storage member 120, and the branches of the first liquid returning channel are also provided in the branches, and the branches of the first liquid returning channel are respectively communicated with another second flow through hole of the ice storage member 120. It can be understood that, by such a design, the plurality of ice storage members 120 are connected in parallel, and the cold storage efficiency of the cold storage device is improved.
In some embodiments of the present invention, a second liquid supply member 421 and a second liquid return member 422 are further included.
The second liquid supply member 421 is provided with a second liquid supply channel therein, the second liquid supply channel is communicated with the first liquid storage cavity 111, and the second liquid supply member 421 is configured to enable the first cooling medium to be conveyed from the first liquid storage cavity 111 to a user through the second liquid supply channel. A second liquid return channel is arranged in the second liquid return piece 422, the second liquid return channel is communicated with the first liquid storage cavity 111, and the second liquid return piece 422 is used for conveying the first cooling medium back to the first liquid storage cavity 111 from a user through the second liquid supply channel.
Specifically, the second liquid supply member 421 is in a pipe shape, a second liquid supply channel is arranged in the second liquid supply member 421, openings are formed at two ends of the second liquid supply member 421, one end of the second liquid supply member 421 is fixed to the first main body 110 of the cold storage portion 100, and the other end of the second liquid supply member 421 is connected to a user. The second liquid returning part 422 is in a pipeline shape, a second liquid returning channel is arranged in the second liquid returning part 422, openings are formed in two ends of the second liquid returning channel, one end of the second liquid returning part 422 is fixed to the first main body 110 of the cold storage part 100, and the other end of the second liquid returning part 422 is connected to a user.
Two third through holes, namely a first through hole 531 and a second through hole 532, are arranged on the first liquid storage cavity 111, one end of the second liquid supply channel is communicated with the first through hole 531, and the other end of the second liquid supply channel is communicated with an inner cavity of a liquid storage device related to refrigeration equipment at a user; one end of the second liquid return channel is communicated with the second third through hole 532, and the other end is communicated with an inner cavity of a related liquid storage device of refrigeration equipment at a user.
When the liquid cooling device is in actual use, the first cooling medium with the temperature lower than the preset temperature value flows into the second liquid supply channel from the first third through hole 531, flows to a user through the second liquid supply channel, flows to the second third through hole 532 through the second liquid return channel after being used by the user, and flows back to the first liquid storage cavity 111 from the second third through hole 532.
By such a design, a circulating flow of the first cooling medium between the cold storage device and the user is achieved.
In some embodiments of the present invention, a cold water supply pump 440 is further included, the cold water supply pump 440 is disposed on the second liquid supply part 421, and the cold water supply pump 440 is configured to control a flow rate of the first cooling medium in the second liquid supply channel.
Specifically, the cold water supply pump 440 is connected in series to the second liquid supply member 421, and can control the flow rate of the first cooling medium in the second liquid supply passage. When the temperature of the first cooling medium in the first liquid storage cavity 111 is higher than the preset temperature value, the cold water supply pump 440 stops the first cooling medium flowing in the second liquid supply channel, and only when the temperature of the first cooling medium in the first liquid storage cavity 111 is lower than the preset temperature value required by cooling for a user, the cold water supply pump 440 enables the first cooling medium to flow in the second liquid supply channel. By such a design, it is ensured that the temperature of the first cooling medium provided by the cold storage device to the user meets the user's requirements.
Further, the cold water supply pump 440 can change the flow speed of the first cooling medium in the first liquid storage chamber 111 according to the actual supply and demand conditions, thereby enabling the cold storage apparatus to be adapted to more situations.
In some embodiments of the present invention, the cold storage portion 100 further includes a temperature sensor provided in the first liquid storage chamber 111 for acquiring a temperature value of the first cooling medium.
Specifically, at least one temperature sensor is arranged in the first liquid storage cavity 111, and the temperature sensor can acquire the temperature value of the first cooling medium in real time. Through setting up temperature sensor, can accurately and in time acquire the temperature value of first cooling medium more, effectively improved the cold-storage efficiency of cold-storage equipment.
In some embodiments of the present invention, the cold storage portion 100 further includes an icing sensor and an ice thickness sensor, both of which are disposed in the first liquid storage chamber 111, the icing sensor being configured to detect icing of the outer surface of the ice storage member 120, and the ice thickness sensor being configured to acquire an amount of ice stored on the outer surface of the ice storage member 120.
Specifically, an icing sensor and an ice thickness sensor are disposed in the first liquid storage chamber 111, the icing sensor can determine whether the outer surface of the ice storage member 120 is iced, and the ice thickness sensor can acquire the thickness value of the icing on the outer surface of the ice storage member 120. Through setting up icing sensor and thick sensor of ice, can more accurately and timely acquire the condition of icing on the outer surface of ice storage member 120 to and the ice storage volume of the first cooling medium in first liquid chamber 111, effectively improved cold-storage equipment's cold-storage efficiency.
Further, when the ice storage member 120 has a plurality of, the quantity of icing sensor and ice thickness sensor is a plurality of, can guarantee that every ice storage member 120 all has at least one icing sensor and ice thickness sensor to monitor to the accuracy of testing result has been improved.
Further, the ice sensor is activated when the temperature of the first cooling medium in the first liquid storage chamber 111 is lower than a preset temperature value, and the ice thickness sensor is activated only when the ice sensor makes a judgment that the outer surface of the ice storage member 120 is frozen. It will be appreciated that such a design reduces the operating costs of the cold storage device.
In some embodiments of the present invention, a refrigerating part 300 is further included. The refrigerating portion 300 includes a cooling tower 320 and a cooling member 310, the cooling member 310 is fixed to the refrigerating unit 200, a fourth liquid storage cavity is provided in the cooling member 310, the fourth liquid storage cavity is used for storing a third cooling medium, the cooling tower 320 is used for reducing the temperature of the third cooling medium, a cooling cavity is provided in the cooling tower 320, the cooling cavity is communicated with the fourth liquid storage cavity, and the third cooling medium can circulate between the cooling cavity and the fourth liquid storage cavity.
Specifically, the refrigerating part 300 includes a cooling tower 320 and a cooling member 310. The cooling member 310 is fixed to the second body 210 of the refrigeration unit 200, a fourth liquid storage cavity is disposed in the cooling member 310, a third cooling medium is stored in the fourth liquid storage cavity, the third cooling medium may be water or an ethylene glycol aqueous solution, and at least two fourth circulation holes are disposed in the fourth liquid storage cavity. A cooling cavity is arranged in the cooling tower 320, a certain amount of third cooling medium is also stored in the cooling cavity, and at least two fifth circulation holes are arranged in the cooling cavity. The fourth circulation hole and the fifth circulation hole are communicated with each other two by two so that the third cooling medium can circulate between the fourth reservoir chamber and the cooling chamber.
In a specific use process, the third cooling medium in the fourth liquid storage chamber can absorb the working heat of the refrigeration unit 200, and the temperature-increased third cooling medium flows into the cooling chamber from the fourth liquid storage chamber through the fourth through holes and the fifth through holes. The third cooling medium in the cooling cavity is cooled and evaporated to reduce the temperature of the third cooling medium, and then flows into the fourth liquid storage cavity from the cooling cavity through the other fourth circulation hole and the fifth circulation hole, so that the third cooling medium circulates, the cooling of the refrigerating unit 200 is realized, and the normal operation of the refrigerating unit 200 is guaranteed.
In some embodiments of the present invention, a third liquid supply part 431 and a third liquid return part 432 are further included.
The third liquid supply part 431 is internally provided with a third liquid supply channel, the third liquid supply channel is respectively communicated with the fourth liquid storage cavity and the cooling cavity, and the third liquid supply part 431 is used for enabling a third cooling medium to flow into the fourth liquid storage cavity from the cooling cavity through the third liquid supply channel. A third liquid return channel is arranged in the third liquid return part 432, the third liquid return channel is respectively communicated with the fourth liquid storage cavity and the cooling cavity, and the third liquid return part 432 is used for enabling a third cooling medium to flow back to the cooling cavity from the fourth liquid storage cavity through the third liquid return channel.
Specifically, the third liquid supply member 431 is in a pipeline shape, a third liquid supply channel is arranged in the third liquid supply member 431, openings are respectively arranged at two ends of the third liquid supply member 431, one end of the third liquid supply member 431 is fixed on the cooling member 310, and the other end of the third liquid supply member 431 is fixed on the cooling tower 320. The third liquid returning part 432 is in a pipeline shape, a third liquid returning channel is arranged in the third liquid returning part 432, openings are formed in two ends of the third liquid returning channel at the third liquid returning part 432, one end of the third liquid returning part 432 is fixed to the cooling part 310, and the other end of the third liquid returning part 432 is fixed to the cooling tower 320.
Two through holes, namely fourth through holes, are arranged on the inner wall of the fourth liquid storage cavity and are named as a first fourth through hole 541 and a second fourth through hole 542 respectively; two through holes, namely fifth through holes, are arranged on the inner wall of the cooling cavity and are named as a fifth through hole I551 and a fifth through hole II 552 respectively. The third liquid supply channel is respectively communicated with the fourth circulation hole I541 and the fifth circulation hole I551, and the third liquid return channel is respectively communicated with the fourth circulation hole II 542 and the fifth circulation hole II 552.
In actual use, when the refrigerator group 200 needs to lower the temperature of the second cooling medium to the freezing point temperature of the first cooling medium or below, the cooling unit 300 starts to operate. The third cooling medium in the fourth liquid storage cavity flows into the third liquid supply channel from the fourth flow hole I541, flows to the fifth flow hole I551 through the third liquid supply channel, and flows into the cooling cavity through the fifth flow hole I551. The third cooling medium that has absorbed the operating heat of the refrigeration unit 200 is cooled in the cooling chamber, and the third cooling medium whose temperature has been reduced flows from the fifth second circulation hole 552 into the third liquid return passage, flows to the fifth second circulation hole 552 via the third liquid return passage, and flows back to the fourth liquid storage chamber via the fourth second circulation hole 542.
Through such a design, a circulating flow of the third cooling medium between the cooling member 310 and the cooling stage is realized, so that the refrigerating part 300 can effectively cool the refrigerating unit 200.
A cold storage method according to an embodiment of the present invention is described below with reference to fig. 2 to 3.
A cold storage method according to an embodiment of a second aspect of the present invention includes:
s100, acquiring a temperature value of a first cooling medium;
s200, acquiring a current time value;
s300, acquiring the ice storage amount of the outer surface of the ice storage member 120;
and S400, controlling the refrigerating unit to start working or stop working according to the temperature value, the current time value and/or the ice storage amount.
Specifically, as shown in fig. 2, the working state of the refrigerating unit 200 is controlled together according to the three values of the temperature value of the first cooling medium, the current time value and the ice storage amount on the outer surface of the ice storage member 120, so that the sensible heat of the low-temperature and non-frozen first cooling medium can be better utilized by the cold storage device in the using process, and the cold storage efficiency of the cold storage device is further improved. It is understood that the order of steps S100, S200 and S300 may be interchanged.
Further, the sequence of step S100 and step S200 may be interchanged, but step S300 must occur after step S100, that is, when the temperature of the first cooling medium in the first liquid storage chamber 111 is higher than the preset temperature value, the obtaining of the ice storage amount on the outer surface of the ice storage member 120 is not performed, and only when the temperature of the first cooling medium is lower than the preset temperature value, the obtaining of the ice storage amount on the outer surface of the ice storage member 120 is started. The design reduces the operating cost of the cold accumulation equipment to a certain extent.
In some embodiments of the present invention, step S400 includes:
s410, if the temperature value is higher than the preset temperature value, controlling the refrigerating unit 200 to start working;
s420, if the temperature value is lower than the preset temperature value, the current time value is in the power utilization low-peak time period, and the ice storage amount is smaller than the preset amount, controlling the refrigerating unit 200 to start working;
s430, if the ice storage amount is larger than or equal to the preset amount, controlling the refrigerating unit 200 to stop working;
and S440, if the temperature value is lower than the preset temperature value and the current time value is in the peak electricity utilization time period, controlling the refrigerating unit 200 to stop working.
Specifically, as shown in fig. 3, the temperature value of the first cooling medium in the first reservoir chamber is T1The preset temperature value is T0The current time value is t1The power consumption peak time period is tLThe peak time period of electricity utilization is tHThe ice storage amount on the outer surface of the ice storage member is n1A predetermined amount of n0。
When T is1＞T0When the refrigerating unit 200 starts to operate, the refrigerating unit 200 only needs to control the temperature of the second cooling medium to be at or below the preset temperature value, so that the temperature T is enabled1＜T0。
When T is1＜T0、t1∈tLAnd n is1＜n0In the meantime, the refrigerator sets 200 all start to operate, and the temperature of the second cooling medium needs to be controlled at or below the freezing point temperature of the first cooling medium, so that T1It may be gradually lowered until the first cooling medium condenses as a solid.
When n is1≥n0At this time, the refrigeration unit 200 stops continuing operation.
When T is1＜T0And t is1∈tHIn this case, the refrigerator group 200 is always in a state of being stopped.
It will be appreciated that only t1∈tLThen, the refrigerating unit 200 is continuously operated to solidify the first cooling medium into a solid until n1≥n0Until the end; and t is1∈tHThen only at T1＞T0The refrigeration unit 200 will only operate. The design effectively reduces the operating cost of the cold accumulation equipment.
Meanwhile, the design can fully utilize the latent heat of the solid first cooling medium and the sensible heat of the liquid first cooling medium with the temperature lower than the preset temperature value, effectively improves the cold storage proportion of the cold storage equipment, and improves the cold storage efficiency of the cold storage equipment.
In some embodiments of the present invention, after step S100, the method further includes:
and controlling the cold water supply pump 440 to start or stop working according to the temperature value.
Specifically, the cold water supply pump 440 connected in series to the second liquid supply member 421 can make the first cooling medium flow in the second liquid supply passage only when the temperature of the first cooling medium in the first liquid storage chamber 111 is lower than a preset temperature value. Such a design ensures that the temperature of the first cooling medium delivered to the user can be adapted to the user's requirements.
In some embodiments of the present invention, after step S400, the method further includes:
the operation of the refrigerating part 300 is controlled to be started or stopped according to the operation state of the refrigerating unit 200.
Specifically, when the refrigerator unit 200 starts to operate and the temperature of the second cooling medium needs to be controlled to be at or below the freezing point temperature of the first cooling medium, the refrigerating unit 300 starts to operate to cool the refrigerator unit 200. When the refrigerating unit 200 does not operate or the temperature of the second cooling medium is controlled to be at or below the preset temperature value, the operating heat does not need to be absorbed by the refrigerating unit 300. It will be appreciated that such a design ensures that the operating heat of the refrigeration unit 200 during high power operation can be dissipated in a timely manner, while reducing the operating costs of the cold storage device.
An area cooling system according to an embodiment of the third aspect of the present invention includes the cold storage apparatus according to the above-described embodiment of the first aspect of the present invention.
Particularly, by adopting the cold accumulation equipment, the cold accumulation proportion of the regional cold supply system is effectively improved, so that the investment is saved, the operating cost is reduced, and the economical efficiency is improved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (13)

1. A cold storage apparatus, characterized by comprising:
the cold accumulation part comprises a first main body and an ice accumulation piece, a first liquid accumulation cavity is arranged in the first main body and used for storing a first cooling medium, the ice accumulation piece is arranged in the first liquid accumulation cavity, a second liquid accumulation cavity is arranged in the ice accumulation piece and used for storing a second cooling medium, and the freezing point of the second cooling medium is lower than that of the first cooling medium;
the refrigerator unit is used for reducing the temperature of the second cooling medium and comprises a second main body, a third liquid storage cavity is arranged in the second main body and communicated with the second liquid storage cavity, and the second cooling medium can circularly flow between the second liquid storage cavity and the third liquid storage cavity.
2. The cold storage device as claimed in claim 1, further comprising:
a first liquid supply member, wherein a first liquid supply channel is arranged in the first liquid supply member, the first liquid supply channel is respectively communicated with the second liquid storage cavity and the third liquid storage cavity, and the first liquid supply member is used for enabling the second cooling medium to flow into the second liquid storage cavity from the third liquid storage cavity through the first liquid supply channel;
and a first liquid return piece, wherein a first liquid return channel is arranged in the first liquid return piece, the first liquid return channel is respectively communicated with the second liquid storage cavity and the third liquid storage cavity, and the first liquid return piece is used for enabling the second cooling medium to flow back to the third liquid storage cavity from the second liquid storage cavity through the first liquid return channel.
3. The cold storage device as claimed in claim 1, further comprising:
a second liquid supply part, wherein a second liquid supply channel is arranged in the second liquid supply part, the second liquid supply channel is communicated with the first liquid storage cavity, and the second liquid supply part is used for conveying the first cooling medium from the first liquid storage cavity to a user through the second liquid supply channel;
and a second liquid return piece, wherein a second liquid return channel is arranged in the second liquid return piece, the second liquid return channel is communicated with the first liquid storage cavity, and the second liquid return piece is used for conveying the first cooling medium from the user to the first liquid storage cavity through the second liquid supply channel.
4. The cold storage device according to claim 3, further comprising a cold water supply pump disposed on the second liquid supply member, wherein the cold water supply pump is configured to control a flow speed of the first cooling medium in the second liquid supply channel.
5. The cold storage device according to claim 1, wherein the cold storage portion further comprises a temperature sensor provided in the first liquid storage chamber, the temperature sensor being configured to acquire a temperature value of the first cooling medium.
6. The cold-storage device according to claim 1, wherein the cold-storage portion further includes an icing sensor and an ice thickness sensor, both of which are provided in the first liquid storage chamber, the icing sensor being configured to detect icing of an outer surface of the ice-storage member, the ice thickness sensor being configured to acquire an amount of ice stored on the outer surface of the ice-storage member.
7. The cold storage device as claimed in claim 1, further comprising:
the refrigeration portion, the refrigeration portion includes cooling tower and cooling piece, the cooling piece is fixed in refrigerating unit, be provided with the fourth in the cooling piece and hold the liquid chamber, the fourth holds the liquid chamber and is used for storing third cooling medium, cooling tower is used for reducing third cooling medium's temperature, be provided with the cooling chamber in the cooling tower, the cooling chamber with the fourth holds the liquid chamber intercommunication, third cooling medium can the cooling chamber with the fourth holds circulation flow between the liquid chamber.
8. The cold storage device as claimed in claim 7, further comprising:
a third liquid supply member, wherein a third liquid supply channel is arranged in the third liquid supply member, the third liquid supply channel is respectively communicated with the fourth liquid storage cavity and the cooling cavity, and the third liquid supply member is used for enabling a third cooling medium to flow into the fourth liquid storage cavity from the cooling cavity through the third liquid supply channel;
and a third liquid return piece, wherein a third liquid return channel is arranged in the third liquid return piece, the third liquid return channel is respectively communicated with the fourth liquid storage cavity and the cooling cavity, and the third liquid return piece is used for enabling the third cooling medium to flow back to the cooling cavity from the fourth liquid storage cavity through the third liquid return channel.
9. A cold storage method is characterized by comprising:
acquiring a temperature value of the first cooling medium;
acquiring a current time value;
acquiring the ice storage amount of the outer surface of the ice storage piece;
and controlling the refrigerating unit to start or stop working according to the temperature value, the current time value and/or the ice storage quantity.
10. The cold storage method according to claim 9, wherein said controlling the operation start or stop of the refrigerator group according to the temperature value, the current time value, and/or the ice bank amount comprises:
if the temperature value is higher than a preset temperature value, controlling the refrigerating unit to start working;
if the temperature value is lower than the preset temperature value, the current time value is in a power utilization low-peak time period, and the ice storage amount is smaller than a preset amount, controlling the refrigerating unit to start working;
if the ice storage amount is larger than or equal to the preset amount, controlling the refrigerating unit to stop working;
and if the temperature value is lower than the preset temperature value and the current time value is in the peak time period of electricity utilization, controlling the refrigerating unit to stop working.
11. The cold storage method according to claim 9, further comprising, after said obtaining the temperature value of said first cooling medium:
and controlling the water supply and cooling pump to start or stop working according to the temperature value.
12. The cold storage method according to any one of claims 9 to 11, further comprising, after said controlling the operation state of the refrigerator group based on the temperature value, the current time value, and the ice storage amount:
and controlling the refrigerating part to start or stop working according to the working state of the refrigerating unit.
13. A district cooling system comprising a cold storage apparatus as claimed in any one of claims 1 to 8.
CN202011599505.6A 2020-12-29 2020-12-29 Cold storage device, method and regional cold supply system Pending CN112728669A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101881492A (en) * 2010-06-24 2010-11-10 上海弗格森制冷设备有限公司 Dynamic ice cold storing and refrigerating equipment
US20100281889A1 (en) * 2009-05-07 2010-11-11 Daniel Reich Method of control of thermal energy module background of the invention
CN102313331A (en) * 2011-10-18 2012-01-11 江苏七彩科技有限公司 Ice storage refrigeration system and refrigeration method thereof
CN109028404A (en) * 2018-08-07 2018-12-18 王凯旋 A kind of mixture of ice and water chilling air conditioning system and its control method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100281889A1 (en) * 2009-05-07 2010-11-11 Daniel Reich Method of control of thermal energy module background of the invention
CN101881492A (en) * 2010-06-24 2010-11-10 上海弗格森制冷设备有限公司 Dynamic ice cold storing and refrigerating equipment
CN102313331A (en) * 2011-10-18 2012-01-11 江苏七彩科技有限公司 Ice storage refrigeration system and refrigeration method thereof
CN109028404A (en) * 2018-08-07 2018-12-18 王凯旋 A kind of mixture of ice and water chilling air conditioning system and its control method

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