CN113465136B - Control method and control device for refrigeration system and intelligent air conditioner - Google Patents
Control method and control device for refrigeration system and intelligent air conditioner Download PDFInfo
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- CN113465136B CN113465136B CN202110455622.3A CN202110455622A CN113465136B CN 113465136 B CN113465136 B CN 113465136B CN 202110455622 A CN202110455622 A CN 202110455622A CN 113465136 B CN113465136 B CN 113465136B
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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
- 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
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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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24F2140/00—Control inputs relating to system states
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
Abstract
The application relates to the technical field of air conditioners and discloses a control method for a refrigerating system. The refrigeration system comprises a temperature detection element arranged at a circulating water pipe in a wall body, and the method comprises the following steps: obtaining a real-time temperature value of a wall body, the content of hydride in a heat exchanger, an indoor environment temperature value and a set temperature value; and under the conditions that the content of hydride in the heat exchanger is greater than or equal to a first preset value and the indoor environment temperature is greater than or equal to a set temperature value, if the real-time temperature value of the wall body is less than a first set value, the electrochemical hydrogen pump and the circulating water pump are controlled to be closed, and the three-way valve does not turn. By the control method, the effect of preventing the wall from being affected with damp is achieved under the condition of refrigeration. The application also discloses a control device and an intelligent air conditioner for the refrigerating system.
Description
Technical Field
The present application relates to the field of air conditioning technologies, and for example, to a control method and a control device for a refrigeration system, and an intelligent air conditioner.
Background
With the energy conservation and environmental protection becoming the theme of the times, the electrochemical refrigeration system is imperative. The electrochemical refrigeration system is based on endothermic and exothermic reactions in chemistry, cools the indoor environment through the endothermic reaction, and releases heat energy into the surrounding medium through the exothermic reaction, which is actually an oxidation-reduction reaction under the action of current, but has a high coefficient of thermal energy.
The prior art discloses an air conditioner and a control method thereof, the air conditioner comprises an indoor circulating water pipe, an indoor heat exchanger, two metal hydride heat exchangers and an electrochemical compressor, the two metal hydride heat exchangers are connected with the indoor and the outdoor through two hydrogen pipelines, the indoor heat exchanger exchanges heat in a radiation mode, and the control method of the air conditioner comprises the following steps: the electromagnetic three-way reversing valve is controlled according to the positive and negative voltage of power transmission, heat-absorbing circulating water is sent into the metal hydride heat exchanger for cooling, and the cooled water is sent into a room through an indoor circulating water pipe by a pressure pump for radiation heat exchange.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
under the condition of refrigeration, the wall body at the indoor circulating water pipe is easily affected with damp.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a control method and a control device for a refrigerating system and an intelligent air conditioner, which aim to solve the technical problem that a wall body at an indoor circulating water pipe is easy to damp under the refrigerating condition.
In some embodiments, the control method for a refrigeration system includes: obtaining a real-time temperature value of the wall, the content of hydride in the heat exchanger, an indoor environment temperature value and a set temperature value; and under the condition that the content of hydride in the heat exchanger is greater than or equal to a first preset value and the indoor environment temperature is greater than or equal to a set temperature value, if the real-time temperature value of the wall body is less than a first set value, the electrochemical hydrogen pump and the circulating water pump are controlled to be closed, and the three-way valve does not turn, wherein the first set value is determined according to the lowest moisture temperature value acceptable by the wall body.
Optionally, the method further comprises: and under the condition that the content of hydride in the heat exchanger is greater than or equal to a first preset value and the indoor environment temperature value is greater than or equal to a set temperature value, if the real-time temperature value of the wall body is greater than or equal to a second set value, the circulating water pump is controlled to be started, the electrochemical hydrogen pump is started, and the three-way valve does not turn, wherein the second set value is greater than the first set value.
Optionally, the method further comprises: and under the condition that the content of hydride in the heat exchanger is greater than or equal to a first preset value and the indoor environment temperature value is greater than or equal to a set temperature value, if the real-time temperature value of the wall body is greater than or equal to the first set value and the real-time temperature value of the wall body is less than a second set value, controlling the circulating water pump to be started, closing the electrochemical hydrogen pump, and preventing the three-way valve from turning, wherein the second set value is greater than the first set value.
Optionally, the method further comprises: and under the conditions that the hydride content in the heat exchanger is greater than or equal to the first preset value and the indoor environment temperature value is less than a set temperature value, if the real-time temperature value of the wall body is greater than or equal to the second set value, the electrochemical hydrogen pump is controlled to be closed, the circulating water pump is controlled to be opened, and the three-way valve does not turn.
Optionally, the method further comprises: and under the condition that the hydride content in the heat exchanger is less than the first preset value and the indoor environment temperature value is greater than or equal to the set temperature value, if the real-time temperature of the wall body is greater than or equal to the second set value, turning to start the electrochemical hydrogen pump, starting the circulating water pump corresponding to the electrochemical device, and turning to the three-way valve.
Optionally, the first preset value is determined according to the content of the metal hydride in the heat exchanger.
Optionally, the minimum moisture temperature value is determined according to the structure and material of the wall.
In some embodiments, the control device for a refrigeration system comprises: the obtaining module is configured to obtain a real-time temperature value, a hydride content in a heat exchanger, an indoor environment temperature value and a set temperature value of the wall; and the control module is configured to control the electrochemical hydrogen pump and the circulating water pump to be closed and the three-way valve not to turn if the real-time temperature value of the wall body is smaller than a first set value under the condition that the content of hydride in the heat exchanger is larger than or equal to a first preset value and the indoor environment temperature is larger than or equal to a set temperature value.
In some embodiments, the control device for a refrigeration system includes a processor and a memory storing program instructions, wherein the processor is configured to execute the control method for a refrigeration system provided in the foregoing embodiments when executing the program instructions.
In some embodiments, the intelligent air conditioner comprises the control device for the refrigeration system as provided in the previous embodiments.
The control method and the control device for the refrigerating system and the intelligent air conditioner provided by the embodiment of the disclosure can realize the following technical effects:
the control method for the refrigeration system comprises the following steps: and obtaining a real-time temperature value of the wall body in the circulating water pipe, obtaining the content of hydride in the heat exchanger, and obtaining an indoor environment temperature value and a set temperature value. When the content of hydride in the heat exchanger is greater than or equal to a first preset value, namely the hydride in the first heat exchanger can continue to react, and the indoor environment temperature is greater than or equal to a set temperature value, namely the indoor environment temperature does not reach the set temperature value, and the real-time temperature value of the wall body is smaller than a first set value, the electrochemical pump and the circulating water pump are controlled to be closed, the three-way valve does not turn, namely when the temperature of the wall body is about to reach the lowest moisture temperature acceptable by the wall body, the phenomenon that the wall body is damaged easily occurs due to temperature reduction, the electrochemical pump and the circulating water pump are closed, so that the electrochemical reaction is stopped, water in the circulating water pump does not circulate any more, heat exchange is carried out only by using the current circulating water, and the three-way valve does not turn, namely the content of hydrogen in the electrochemical hydrogen pump can continue to react. In the case of refrigeration, the wall is protected by the control method, and the wall is prevented from being affected with damp.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
FIG. 1 is a schematic diagram of an electrochemical refrigeration system provided by an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a control method for a refrigeration system provided by an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a control for a refrigeration system provided by an embodiment of the present disclosure;
fig. 4 is a schematic diagram of another control device for a refrigeration system provided by an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and advantages of the embodiments of the present disclosure can be understood in detail, a more particular description of the embodiments of the disclosure, briefly summarized above, may be had by reference to the appended drawings, which are included to illustrate, but are not intended to limit the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The term "plurality" means two or more unless otherwise specified.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
As shown in connection with fig. 1, the refrigeration system includes: a first metal hydride heat exchanger 11, a second metal hydride heat exchanger 12, an electrochemical hydrogen pump 13, two hydrogen pipelines 14, a first circulating water pump 21, a second circulating water pump 22, a circulating water pipe 23, an indoor radiant heat exchanger 24, a first three-way valve 25, a second three-way valve 26, a third three-way valve 27 and a fourth three-way valve 28. Wherein, the circulating water pipe is connected with the indoor heat exchanger and used for circulating water; the first hydrogen pipeline 14 is communicated with the first metal hydride heat exchanger 11 and the electrochemical hydrogen pump 13, the second hydrogen pipeline 14 is communicated with the second metal hydride heat exchanger 12 and the electrochemical hydrogen pump 13, metal hydrides are filled in the two metal hydride heat exchangers, and hydrogen absorption and heat release reactions or hydrogen release and heat absorption reactions can be generated; the three-way valve is used for communicating the whole circulation loop; the circulating water pumps are used for pressurizing circulating water to flow into the circulating water pipes, only one of the two circulating water pumps is started during work, and cooled water is sent into a room through the circulating water pipes through one circulating water pump to perform radiation heat exchange. The specific implementation process is as follows:
when positive pressure is applied to the electrochemical hydrogen pump, the second metal hydride heat exchanger absorbs hydrogen and releases heat to serve as a condenser, the first metal hydride heat exchanger 11 absorbs hydrogen and absorbs heat to serve as an evaporator, the first circulating water pump 21 starts to work, at the moment, the first three-way valve 25 opens the valve A1B1, the fourth three-way valve 28 opens the valve B4C4, the third three-way valve 27 opens the valve B3C3, the second three-way valve 26 opens the valve C2B2, after circulating water cooled by the first metal hydride heat exchanger 11 is pressurized by the first circulating water pump 21, the circulating water enters the home of a user through the circulating water pipe 23 to perform radiation heat exchange refrigeration, and then flows back to the first metal hydride heat exchanger 11 to continue cooling, so that circulation is carried out until the content of hydride in the first metal hydride heat exchanger 11 cannot continue to perform endothermic reaction.
When negative pressure is applied to the electrochemical hydrogen pump, the first metal hydride heat exchanger 11 absorbs hydrogen and releases heat to serve as a condenser, the second metal hydride heat exchanger 12 absorbs hydrogen and absorbs heat to serve as an evaporator, the second circulating water pump 22 starts to work, at the moment, the third three-way valve 27 is opened A3C3, the second three-way valve 26 is opened C2B2, the first three-way valve 25 is opened C1B1, the fourth three-way valve 28 is opened B4A4, the circulating water is cooled by the second metal hydride heat exchanger 12, is pressurized by the second circulating water pump 22, enters the user home through the circulating water pipe 23 for radiation heat exchange refrigeration, then flows back to the second metal hydride heat exchanger 12 for continuous cooling, and circulates until the content of hydride in the second metal hydride heat exchanger 12 cannot continuously generate endothermic reaction.
In an embodiment of the present disclosure, the refrigeration system may further include: the device comprises a temperature detection element arranged at a circulating water pipe in a wall body, an indoor temperature detection element, a first metal hydride content detection element and a second metal hydride content detection element which are arranged in two metal hydride heat exchangers. The temperature detection element at the circulating water pipe can be used for detecting the real-time temperature value of the wall body, the indoor temperature detection element can be used for detecting the real-time indoor temperature value, the first metal hydride content detection element can be used for detecting the hydride content of the first metal hydride heat exchanger, and the second metal hydride content detection element can be used for detecting the hydride content of the second metal hydride heat exchanger.
Referring to fig. 2, a control method for a refrigeration system includes:
s201, obtaining a real-time temperature value of a wall body, the content of hydride in a heat exchanger, an indoor environment temperature value and a set temperature value;
s202, under the condition that the content of hydride in the heat exchanger is greater than or equal to a first preset value and the indoor environment temperature is greater than or equal to a set temperature value, if the real-time temperature value of the wall body is smaller than a first set value, the electrochemical hydrogen pump and the circulating water pump are controlled to be closed, and the three-way valve does not turn, wherein the first set value is determined according to the lowest moisture temperature value acceptable by the wall body.
The real-time temperature value of the wall body can be obtained by obtaining the real-time temperature value of the circulating water pipe in the wall body, and can also be obtained by obtaining the real-time temperature value of other parts in the wall body.
The hydride content in the heat exchanger is obtained, in the case of refrigeration, the hydride content in the metal hydride heat exchanger as an evaporator can be obtained only, or the hydride content in the two metal hydride heat exchangers can be obtained, and the minimum value of the hydride contents is selected for comparison. By obtaining the hydride content, it is possible to know whether the reaction in the metal hydride heat exchanger can still continue, i.e., whether the electrochemical hydrogen pump needs to be diverted.
The method comprises the steps of obtaining an indoor environment temperature value and a set temperature value, wherein the indoor environment temperature value is a real-time temperature value in the indoor environment, the set temperature value is a temperature value set by a user, obtaining the indoor environment temperature value and the set temperature value, and comparing the indoor environment temperature value with the set temperature value to judge whether refrigeration is required to be suspended or whether refrigeration is required to be carried out again.
When the air conditioner is used for refrigeration, taking an electrochemical hydrogen pump for applying positive pressure as an example, when the first metal hydride heat exchanger is used for dehydrogenation and absorbing heat to serve as an evaporator, and the second metal hydride heat exchanger is used for absorbing hydrogen and releasing heat to serve as a condenser, namely the hydride content in the first metal hydride heat exchanger is reduced, the hydride content in the second metal hydride heat exchanger is increased, and the detected content of the first metal hydride is still larger than or equal to a first preset value, wherein the first preset value is a metal hydride content value when the hydrogen release reaction cannot be continuously carried out in the first metal hydride heat exchanger. And at the moment, the indoor environment temperature is greater than or equal to the set temperature value, namely the indoor environment temperature value does not reach the temperature value set by the user.
And if the real-time temperature value in the wall body is smaller than a first set value, wherein the first set temperature value is determined according to the lowest moisture temperature value acceptable by the wall body. The first set value is equal to the lowest moisture temperature value acceptable by the wall body plus a first adjusting value, and when the real-time temperature value in the wall body is smaller than the first set value, namely the real-time temperature value in the wall body does not reach the lowest moisture temperature value acceptable by the wall body yet, namely the real-time temperature value in the wall body is about to reach the lowest moisture temperature value acceptable by the wall body. The electrochemical hydrogen pump for facilitating the circulation of hydrogen gas is controlled to be turned off so that the hydrogen discharge reaction of the first metal hydride heat exchanger is slowed down until stopped, i.e., the first metal hydride heat exchanger is slowed down until it stops absorbing heat. And controlling a circulating water pump for circulating water to be closed, so that the water flow speed in the circulating water pipe is gradually reduced, and the heat exchange rate of the indoor radiant heat exchanger is gradually reduced. The three-way valve for controlling the hydrogen flow direction does not turn, and the three-way valve does not need to turn because the metal hydride content in the first metal hydride heat exchanger can continuously react. By the control method, the wall can be protected under the refrigeration condition, and the wall is prevented from being affected with damp.
The states of the electrochemical hydrogen pump, the circulating water pump and the three-way valve are kept in the same state until the temperature of the wall body rises to be greater than or equal to a first set value.
The process of the electrochemical hydrogen pump applying negative pressure is the same as the control method of the electrochemical hydrogen pump applying positive pressure, but the directions of hydrogen circulation and circulating water circulation when the electrochemical hydrogen pump applying negative pressure are different from the directions of hydrogen circulation and circulating water circulation when the electrochemical hydrogen pump applying positive pressure, and the description is omitted here.
Optionally, the control method for the refrigeration system further comprises:
s301, under the condition that the content of hydride in the heat exchanger is greater than or equal to a first preset value and the indoor environment temperature value is greater than or equal to a set temperature value, if the real-time temperature value of the wall body is greater than or equal to the first set value and the real-time temperature value of the wall body is smaller than a second set value, the circulating water pump is controlled to be started, the electrochemical hydrogen pump is controlled to be closed, the three-way valve does not turn, and the second set value is greater than the first set value.
Taking the case that the electrochemical hydrogen pump applies positive pressure, when the content of hydride in the heat exchanger is greater than or equal to the first preset value and the indoor environment temperature value is greater than or equal to the set temperature value, that is, the metal hydride in the first metal hydride heat exchanger can still continue to react, and the indoor temperature value does not reach the temperature value set by the user.
And if the real-time temperature value of the wall body is greater than or equal to the first set value and the real-time temperature value of the wall body is less than a second set value, wherein the second set value is determined according to the lowest moisture temperature value acceptable by the wall body, namely the lowest moisture temperature value acceptable by the wall body is added with a second adjusting value, and the second adjusting value is greater than the first adjusting value, namely the second set value is greater than the first set value. At the moment, the real-time temperature value of the wall is greater than the lowest moisture temperature value acceptable by the wall, the temperature in the circulating water pipe tends to rise, but the real-time temperature value of the wall does not reach the state of continuous refrigeration of the electrochemical hydrogen pump, the circulating water pump is controlled to be started, the temperature rise is slowed down through circulation of the circulating water, the electrochemical hydrogen pump is controlled to be stopped, namely the temperature of the circulating water is not reduced through the electrochemical refrigeration, the three-way valve does not turn, namely the metal hydride in the first metal hydride heat exchanger can continuously react. Meanwhile, because the energy consumption of the circulating water pump is low and the energy consumption of the electrochemical hydrogen pump is high, the circulating water pump is started firstly by the control method, and the energy-saving effect can be achieved.
The states of the electrochemical hydrogen pump, the circulating water pump and the three-way valve are kept in the same state until the temperature of the wall body rises to be greater than or equal to a second set value.
The process of the electrochemical hydrogen pump applying negative pressure is the same as the control method of the electrochemical hydrogen pump applying positive pressure, but the directions of hydrogen circulation and circulating water circulation when the electrochemical hydrogen pump applying negative pressure are different from the directions of hydrogen circulation and circulating water circulation when the electrochemical hydrogen pump applying positive pressure, and the description is omitted here.
Optionally, the control method for the refrigeration system further comprises:
s401, under the condition that the content of hydride in the heat exchanger is greater than or equal to a first preset value and the indoor environment temperature value is greater than or equal to a set temperature value, if the real-time temperature value of the wall body is greater than or equal to a second set value, the circulating water pump is controlled to be started, the electrochemical hydrogen pump is controlled to be started, and the three-way valve does not turn, wherein the second set value is greater than the first set value.
Taking the electrochemical hydrogen pump for applying positive pressure as an example, when the content of hydride in the heat exchanger is greater than or equal to a first preset value and the indoor environment temperature value is greater than or equal to a set temperature value, that is, the metal hydride in the first metal hydride heat exchanger can continue to react, and the indoor temperature value does not reach the temperature value set by the user yet.
And if the real-time temperature value of the wall body is greater than or equal to a second set value, wherein the second set value is determined according to the lowest moisture temperature value acceptable by the wall body, namely the lowest moisture temperature value acceptable by the wall body is added with a second adjusting value, and the second adjusting value is greater than the first adjusting value, namely the second set value is greater than the first set value. At the moment, the real-time temperature value of the wall body is larger than the lowest acceptable moisture temperature value of the wall body, and the temperature of the circulating water rises to the extent that the heat exchange of the radiant heat exchanger is about to be influenced, then the circulating water pump can be controlled to be started, the electrochemical hydrogen pump is started, the circulating water is cooled through the electrochemical hydrogen pump, the three-way valve does not turn, and the metal hydride in the first metal hydride heat exchanger can continue to react.
The process of the electrochemical hydrogen pump applying negative pressure is the same as the control method of the electrochemical hydrogen pump applying positive pressure, but the directions of hydrogen circulation and circulating water circulation when the electrochemical hydrogen pump applying negative pressure are different from the directions of hydrogen circulation and circulating water circulation when the electrochemical hydrogen pump applying positive pressure, and the description is omitted here.
Optionally, the control method for the refrigeration system further comprises:
s501, under the condition that the hydride content in the heat exchanger is larger than or equal to a first preset value and the indoor environment temperature value is smaller than a set temperature value, if the real-time temperature value of the wall body is larger than or equal to a second set value, the electrochemical hydrogen pump is controlled to be closed, the circulating water pump is controlled to be opened, and the three-way valve does not turn.
In a refrigeration state, taking an electrochemical hydrogen pump to apply positive pressure as an example, the content of hydride in the heat exchanger is greater than or equal to a first preset value, that is, the content of the first metal hydride heat exchanger can also continue to perform chemical reaction, and the indoor environment temperature value is less than a set temperature value, that is, the indoor environment temperature value is less than a temperature value set by a user at the moment. And if the real-time temperature value of the wall body is greater than or equal to the second set value, namely the real-time temperature value of the wall body is greater than the lowest moisture temperature value acceptable by the wall body.
At the moment, the indoor environment temperature value is smaller than the temperature value set by the user, so that the radiant heat exchanger needs to be prevented from continuously exchanging heat with the indoor environment, the electrochemical hydrogen pump is controlled to be closed, the circulating water pump is started, namely circulating water is kept to continuously circulate, but the temperature is not reduced, the three-way valve does not turn, namely the metal hydride in the first metal hydride heat exchanger can continuously react. By means of the control mode, the indoor environment temperature value is maintained at the temperature value set by the user, and the use experience of the user is improved.
The process of the electrochemical hydrogen pump applying negative pressure is the same as the control method of the electrochemical hydrogen pump applying positive pressure, but the directions of hydrogen circulation and circulating water circulation when the electrochemical hydrogen pump applies negative pressure are different from the directions of hydrogen circulation and circulating water circulation when the electrochemical hydrogen pump applies positive pressure, and the description is omitted here.
Optionally, the control method for the refrigeration system further comprises:
s601, under the condition that the hydride content in the heat exchanger is smaller than a first preset value and the indoor environment temperature value is larger than or equal to a set temperature value, if the real-time temperature value of the wall body is larger than or equal to a second set value, the electrochemical hydrogen pump is turned to be started, the circulating water pump corresponding to the electrochemical hydrogen pump is started, and the three-way valve is turned.
In a refrigeration state, taking an electrochemical hydrogen pump to apply positive pressure as an example, the hydride content in the first metal hydride heat exchanger is less than a first preset value, that is, the content of the metal hydride in the first metal hydride heat exchanger cannot react any more, and under the condition that the indoor environment temperature value is greater than or equal to a set temperature value, that is, the indoor environment temperature value does not reach a temperature value set by a user yet, the real-time temperature value of the wall body is greater than or equal to a second set value, that is, the real-time temperature value of the wall body is far greater than the lowest moisture temperature value acceptable to the wall body.
At the moment, the electrochemical hydrogen pump needs to turn, the circulating water pump corresponding to the electrochemical hydrogen pump is started, the three-way valve turns, the first metal hydride heat exchanger releases heat to generate a hydrogen absorption reaction, and the second metal hydride heat exchanger absorbs heat to generate a hydrogen desorption reaction. By the control method, the electrochemical device can continuously refrigerate indoors, and the use experience of a user is improved.
Alternatively, the first preset value is determined based on the content of the metal hydride in the heat exchanger.
When the content of the metal hydride in the first metal hydride heat exchanger is equal to the content of the metal hydride in the second metal hydride heat exchanger, the first preset value can be determined according to the content of the metal hydride when the metal hydride in the first metal hydride heat exchanger can not release hydrogen any more.
When the content of the metal hydride in the first metal hydride heat exchanger is not equal to the content of the metal hydride in the second metal hydride heat exchanger, the first preset value can be determined according to the content of the metal hydride, in which the metal hydride content is the most remained, when neither of the metal hydride heat exchangers can react.
The content of the metal hydride is determined by two metal hydride content determination methods, so that the electrochemical hydrogen pump can be controlled to turn after the metal hydride in the metal hydride heat exchanger cannot react.
Optionally, the lowest moisture temperature value is determined according to the structure and material of the wall.
The lowest moisture temperature value can be determined according to the structure and the material of the wall body, the lowest moisture temperature values acceptable by the wall body are different due to different structures of the wall body, and the lowest moisture temperature values acceptable by the wall body are different due to different materials of the wall body, so that the lowest moisture temperature value is determined according to the structure and the material of the wall body.
As shown in fig. 3, an embodiment of the present disclosure provides a control device for a refrigeration system, including: the system comprises an obtaining module 31 and a control module 32, wherein the obtaining module 31 is configured to obtain a real-time temperature value of a wall body, the content of hydride in a heat exchanger, an indoor environment temperature value and a set temperature value; the control module 32 is configured to control the electrochemical hydrogen pump and the water circulating pump to be closed if the real-time temperature value of the wall body is less than the first set value and the three-way valve is not turned around in the case that the content of the hydride in the heat exchanger is greater than or equal to the first preset value and the indoor environment temperature is greater than or equal to the set temperature value.
By adopting the control device for the refrigerating system, the wall body can be protected during refrigeration, and the wall body is prevented from being damped.
As shown in fig. 4, the embodiment of the present disclosure provides a control device for a refrigeration system, which includes a processor (processor) 400 and a memory (memory) 401. Optionally, the apparatus may also include a Communication Interface 402 and a bus 403. The processor 400, the communication interface 402, and the memory 401 may communicate with each other through a bus 403. Communication interface 402 may be used for information transfer. The processor 400 may invoke logic instructions in the memory 401 to perform the control method for the refrigeration system of the above-described embodiment.
In addition, the logic instructions in the memory 401 may be implemented in the form of software functional units and may be stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 401 is a computer-readable storage medium and can be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 400 executes functional applications and data processing by executing program instructions/modules stored in the memory 401, namely, implements the control method for the refrigeration system in the above-described embodiment.
The memory 401 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 401 may include a high-speed random access memory, and may also include a nonvolatile memory.
The embodiment of the disclosure provides an intelligent air conditioner, which comprises the control device for the refrigerating system.
The disclosed embodiments provide a computer-readable storage medium storing computer-executable instructions configured to perform the above-described control method for a refrigeration system.
The disclosed embodiments provide a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the above-described control method for a refrigeration system.
The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description for example only and are not limiting upon the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising a …" does not exclude the presence of additional like elements in a process, method, or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosure, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (10)
1. A control method for a refrigeration system comprising a plurality of heat exchangers filled with metal hydride, an electrochemical hydrogen pump, two hydrogen pipes, two circulating water pumps, a circulating water pipe, an indoor radiant heat exchanger, and a plurality of three-way valves; the circulating water pipe is positioned in the wall body, is connected with the indoor heat exchanger and is used for circulating water; the circulating water pump is used for pressurizing circulating water to flow into the circulating water pipe; when the device works, only one of the two circulating water pumps is started, and cooled water is sent into a room through the circulating water pump through the circulating water pipe to perform radiation heat exchange; characterized in that the method comprises:
obtaining a real-time temperature value of the wall, the content of hydride in the heat exchanger, an indoor environment temperature value and a set temperature value;
under the condition that the content of hydride in the heat exchanger is greater than or equal to a first preset value and the indoor environment temperature is greater than or equal to a set temperature value, if the real-time temperature value of the wall body is less than a first set value, the electrochemical hydrogen pump and the circulating water pump are controlled to be closed, the three-way valve does not turn,
wherein the first set value is determined according to the lowest moisture temperature value acceptable by the wall; the first preset value is a metal hydride content value when the hydrogen discharge reaction can not continuously occur in the first metal hydride heat exchanger; the three-way valve is used for controlling the flow direction of the hydrogen.
2. The control method according to claim 1, characterized in that the method further comprises:
under the condition that the content of hydride in the heat exchanger is greater than or equal to a first preset value and the indoor environment temperature value is greater than or equal to a set temperature value, if the real-time temperature value of the wall body is greater than or equal to a second set value, the circulating water pump is controlled to be started, the electrochemical hydrogen pump is controlled to be started, and the three-way valve does not turn,
wherein the second set value is greater than the first set value.
3. The control method according to claim 1, characterized in that the method further comprises:
under the condition that the content of hydride in the heat exchanger is greater than or equal to a first preset value and the temperature value of the indoor environment is greater than or equal to a set temperature value, if the real-time temperature value of the wall body is greater than or equal to the first set value and the real-time temperature value of the wall body is less than a second set value, the circulating water pump is controlled to be started, the electrochemical hydrogen pump is closed, and the three-way valve does not turn,
wherein the second set value is greater than the first set value.
4. The control method according to claim 1, characterized in that the method further comprises:
under the condition that the hydride content in the heat exchanger is greater than or equal to the first preset value and the indoor environment temperature value is less than a set temperature value, if the real-time temperature value of the wall body is greater than or equal to a second set value, the electrochemical hydrogen pump is controlled to be closed, the circulating water pump is controlled to be opened, and the three-way valve does not turn;
wherein the second set value is greater than the first set value.
5. The control method according to claim 1, characterized in that the method further comprises:
under the condition that the hydride content in the heat exchanger is smaller than the first preset value and the indoor environment temperature value is larger than or equal to the set temperature value, if the real-time temperature of the wall body is larger than or equal to a second set value, the electrochemical hydrogen pump turns to be started, the circulating water pump corresponding to the electrochemical hydrogen pump is started, and the three-way valve turns to;
wherein the second set value is greater than the first set value.
6. The control method according to any one of claims 1 to 5, wherein the first preset value is determined in accordance with a content of metal hydride in the heat exchanger.
7. The control method according to any one of claims 1 to 5, wherein the lowest moisture temperature value is determined according to the structure and material of the wall body.
8. A control device for a refrigeration system comprising a plurality of heat exchangers filled with metal hydrides, an electrochemical hydrogen pump, two hydrogen pipelines, two circulating water pumps, a circulating water pipe, an indoor radiant heat exchanger and a plurality of three-way valves; the circulating water pipe is positioned in the wall body, connected with the indoor heat exchanger and used for circulating water; the circulating water pump is used for pressurizing circulating water to flow into the circulating water pipe; when the device works, only one of the two circulating water pumps is started, and cooled water is sent into a room through the circulating water pump through the circulating water pipe to perform radiation heat exchange; it is characterized by comprising:
the obtaining module is configured to obtain a real-time temperature value, a hydride content in a heat exchanger, an indoor environment temperature value and a set temperature value of the wall;
the control module is configured to control the electrochemical hydrogen pump and the circulating water pump to be closed and the three-way valve not to be turned if the real-time temperature value of the wall body is smaller than a first set value under the condition that the content of hydride in the heat exchanger is larger than or equal to a first preset value and the indoor environment temperature is larger than or equal to a set temperature value,
wherein the first set value is determined according to the lowest moisture temperature value acceptable by the wall; the first preset value is a metal hydride content value when the hydrogen discharge reaction can not continuously occur in the first metal hydride heat exchanger; the three-way valve is used for controlling the flow direction of the hydrogen.
9. A control device for a refrigeration system comprising a processor and a memory storing program instructions, characterized in that the processor is configured to carry out the control method for a refrigeration system according to any one of claims 1 to 7 when executing the program instructions.
10. An intelligent air conditioner, characterized by comprising the control device for a refrigeration system according to claim 8 or 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110455622.3A CN113465136B (en) | 2021-04-26 | 2021-04-26 | Control method and control device for refrigeration system and intelligent air conditioner |
| PCT/CN2021/132644 WO2022227521A1 (en) | 2021-04-26 | 2021-11-24 | Control method and control apparatus for refrigeration system, and smart air conditioner |
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| CN202110455622.3A CN113465136B (en) | 2021-04-26 | 2021-04-26 | Control method and control device for refrigeration system and intelligent air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5351493A (en) * | 1991-12-10 | 1994-10-04 | Sanyo Electric Co., Ltd. | Thermally driven refrigeration system utilizing metal hydrides |
| CN1206494C (en) * | 2002-08-19 | 2005-06-15 | 乐金电子(天津)电器有限公司 | Reaction device using hydrogen storage alloy and its control method |
| CN203022132U (en) * | 2012-11-12 | 2013-06-26 | 东易日盛家居装饰集团股份有限公司 | Indoor moistureproof structure in basement |
| CN102997484B (en) * | 2012-12-27 | 2014-12-10 | 中国科学院广州能源研究所 | Metal hydride refrigerating device |
| JP2015151093A (en) * | 2014-02-18 | 2015-08-24 | 株式会社デンソー | Air conditioner |
| CN106288071A (en) * | 2016-07-21 | 2017-01-04 | 青岛海尔空调器有限总公司 | Electrochemistry air conditioning system |
| CN106196368A (en) * | 2016-07-21 | 2016-12-07 | 青岛海尔空调器有限总公司 | The method for controlling rotation of electrochemistry air conditioning system |
| CN108507059B (en) * | 2017-02-27 | 2021-01-29 | 青岛海尔智能技术研发有限公司 | Electrochemical air conditioner and method for controlling electrochemical air conditioner |
| CN108571788B (en) * | 2017-03-09 | 2021-01-29 | 青岛海尔空调器有限总公司 | Dehumidifier and control method |
| CN108800370A (en) * | 2017-04-26 | 2018-11-13 | 青岛海尔空调器有限总公司 | Air conditioner and its control method |
| CN207865541U (en) * | 2018-01-08 | 2018-09-14 | 王秀娟 | A kind of wall-hanging air conditioner of built-in WIFI |
| CN113465136B (en) * | 2021-04-26 | 2022-10-28 | 青岛海尔空调器有限总公司 | Control method and control device for refrigeration system and intelligent air conditioner |
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| CN113465136A (en) | 2021-10-01 |
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