CN116518485A - Air conditioner and two-way temperature-regulating energy-saving system thereof - Google Patents

Air conditioner and two-way temperature-regulating energy-saving system thereof Download PDF

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Publication number
CN116518485A
CN116518485A CN202310734021.5A CN202310734021A CN116518485A CN 116518485 A CN116518485 A CN 116518485A CN 202310734021 A CN202310734021 A CN 202310734021A CN 116518485 A CN116518485 A CN 116518485A
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CN
China
Prior art keywords
heat exchanger
outlet
temperature
bypass branch
medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310734021.5A
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Chinese (zh)
Inventor
宋斌
刘翔
吴刚
杨斌
梁健泮
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Shenzhen Envicool Technology Co Ltd
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Shenzhen Envicool Technology Co Ltd
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Priority to CN202310734021.5A priority Critical patent/CN116518485A/en
Publication of CN116518485A publication Critical patent/CN116518485A/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
    • 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
    • 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses an air conditioner and a two-way temperature-regulating energy-saving system thereof, wherein the two-way temperature-regulating energy-saving system comprises a circulation loop, a first heat exchanger and a second heat exchanger which are connected in the circulation loop, and further comprises: a first bypass branch, on which a first valve is arranged; and the second bypass branch is provided with a second valve. The bidirectional temperature-regulating energy-saving system provided by the invention adopts a bidirectional temperature-compensating mode to regulate temperature, namely, high-temperature compensation utilizes a high-temperature heat source wasted in the system, low-temperature compensation utilizes a low-temperature cold source in the system, thereby ensuring the requirements on temperature precision and stability, and simultaneously realizing rapid temperature regulation and saving more energy.

Description

Air conditioner and two-way temperature-regulating energy-saving system thereof
Technical Field
The invention relates to the field of air conditioning equipment, in particular to a two-way temperature-regulating energy-saving system. In addition, the invention also relates to an air conditioner comprising the bidirectional temperature regulating and energy saving system.
Background
In the field of high-precision temperature control air conditioner cooling, in order to achieve accurate temperature adjustment, the medium temperature is generally reduced to a temperature slightly lower than a target temperature value through a heat exchanger, then the medium temperature is slowly heated through electric heating to achieve high-precision temperature adjustment, namely when the temperature is reduced to a required temperature close to a critical temperature, an electric heater is electrified to generate heat to conduct micro heat conduction, and accordingly the standard reaching of the temperature and small fluctuation are achieved rapidly.
However, in the prior art, the following disadvantages exist in the manner of precisely adjusting temperature by adopting electric heating: firstly, the electric heater is adopted as a power consumption device, so that the loss of the whole system is increased, and the energy saving is not facilitated by a simple electric heating mode along with the increasing requirement on energy efficiency in the future, so that the energy consumption is not facilitated to be reduced; secondly, when the temperature of the system is higher than the target temperature value in an electric heating mode, callback cannot be realized at the moment, and only part of heat can be bypassed or transmitted to a load end, so that the load temperature fluctuates; thirdly, if the load of the system is increased rapidly, the unidirectional compensation mode is not easy to realize rapidly, the subsequent system circulation is needed, the system can be realized after the evaporation end entering the heat exchanger obtains low temperature, and the response speed is slow.
Therefore, how to quickly implement temperature compensation is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a bidirectional temperature-regulating energy-saving system capable of rapidly realizing temperature supplementation. Another object of the present invention is to provide an air conditioner including the above-mentioned two-way temperature-regulating energy-saving system.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a bi-directional temperature regulating energy saving system comprising a circulation loop and a first heat exchanger and a second heat exchanger connected in the circulation loop, further comprising:
the inlet of the first bypass branch is connected with the first inlet of the second heat exchanger, and the outlet of the first bypass branch is connected with the first outlet of the second heat exchanger;
the inlet of the second bypass branch is connected with the first outlet of the second heat exchanger, and the outlet of the second bypass branch is connected with the first inlet of the first heat exchanger;
the second heat exchanger, the inlet of the second bypass branch and the outlet of the first bypass branch are sequentially arranged in sequence; the first valve is arranged on the first bypass branch, and the second valve is arranged on the second bypass branch.
Optionally, the bidirectional temperature regulating energy saving system comprises a first temperature sensor, a second temperature sensor and a third temperature sensor, wherein the first temperature sensor is arranged between a first outlet of the second heat exchanger and an inlet of the second bypass branch; the second temperature sensor is arranged between the outlet of the first bypass branch and the outlet of the second bypass branch, and the first valve is a flow regulating valve.
Optionally, in the above two-way temperature regulation energy saving system, the precision of the first temperature sensor and the second temperature sensor is within ±0.3 degrees, and the precision of the first valve is within 1%.
Optionally, the above two-way temperature regulation energy saving system further comprises a third temperature sensor or a first pressure sensor for monitoring the change of the load of the first heat exchanger, and/or a fourth temperature sensor or a second pressure sensor;
the third temperature sensor or the first pressure sensor is arranged at the first inlet of the first heat exchanger, and the fourth temperature sensor or the second pressure sensor is arranged at the first outlet of the first heat exchanger.
Optionally, the above two-way temperature-regulating energy-saving system further comprises a mixer, wherein the outlet of the first bypass branch and the first outlet of the second heat exchanger are both connected with the inlet of the mixer, and the outlet of the mixer is connected with the outlet of the second bypass branch.
Optionally, the above two-way temperature-regulating energy-saving system further comprises a thermal buffer, wherein the thermal buffer is connected between the first inlet of the first heat exchanger and the outlet of the second bypass branch.
Optionally, the above two-way temperature-regulating energy-saving system further comprises a third heat exchanger, wherein a first inlet of the third heat exchanger is connected with an outlet of the first bypass branch, and a first outlet of the third heat exchanger is connected with an outlet of the second bypass branch.
Optionally, the above two-way temperature-regulating energy-saving system further comprises a first cooling pipeline exchanging heat with the second heat exchanger and a second cooling pipeline exchanging heat with the third heat exchanger, an inlet of the second cooling pipeline is connected with an inlet of the first cooling pipeline, and an outlet of the second cooling pipeline is connected with an outlet of the first cooling pipeline.
Optionally, in the above two-way temperature-regulating energy-saving system, a third valve is disposed on the second cooling pipeline.
The invention also provides an air conditioner, which comprises the energy-saving refrigeration system.
According to the energy-saving refrigeration system provided by the invention, when the temperature of the medium at the first outlet in the second heat exchanger is lower than the target temperature value, the high-temperature medium from the first outlet in the first heat exchanger is introduced through the first bypass branch to form a first mixed medium, and the medium at the first outlet in the first heat exchanger is heated due to higher temperature of the medium at the first outlet in the second heat exchanger; when the temperature of the first mixed medium is higher than a target temperature value, introducing a low-temperature medium from a first outlet in the second heat exchanger through the second bypass branch, wherein the temperature of the first mixed medium can be reduced due to the fact that the temperature of the medium at the first outlet in the second heat exchanger is lower, so that a second mixed medium is formed; the energy-saving refrigerating system adopts a bidirectional energy-saving temperature compensation mode, namely, high-temperature compensation utilizes a high-temperature heat source wasted in the system, low-temperature compensation utilizes a low-temperature cold source in the system, so that the requirements on temperature precision and stability are met, meanwhile, the rapid temperature regulation can be realized, the energy is more saved, the temperature precision of a medium can be regulated to within +/-0.3 ℃ through the regulation of the first bypass branch and the second bypass branch, and optimally, the temperature precision of the medium can be regulated to within +/-0.1 ℃.
In a preferred embodiment, a third heat exchanger is also included; the outlet medium of the first bypass branch can be mixed with the first outlet medium of the second heat exchanger to form a first mixed medium, the first inlet of the third heat exchanger can be used for the inflow of the first mixed medium, and the first outlet of the third heat exchanger is connected with the outlet of the second bypass branch. . According to the arrangement, through introducing the third heat exchanger, when the temperature of the first mixed medium formed by mixing the outlet medium of the first bypass branch and the first outlet medium of the second heat exchanger is higher than a target temperature value, the mode of introducing the medium of the first outlet of the second heat exchanger through the second bypass branch can be selected to realize cooling, or the mode of introducing the external medium into the third heat exchanger to perform heat exchange can be adopted to perform cooling, or the two cooling modes are simultaneously used; by the mode, the accuracy, efficiency and stability of medium temperature regulation can be further improved.
The air conditioner provided by the invention is provided with the energy-saving refrigeration system, and the energy-saving refrigeration system has the technical effects, so that the air conditioner provided with the energy-saving refrigeration system also has the corresponding technical effects.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a first embodiment of an energy-saving refrigeration system according to the present invention;
fig. 2 is a schematic structural diagram of a second embodiment of an energy-saving refrigeration system according to the present invention;
wherein: a first heat exchanger 1; a second heat exchanger 2; a first temperature sensor 21; a second temperature sensor 22; a first bypass branch 3; a first valve 31; a flow sensor 32; a second bypass branch 4; a second valve 41; a mixer 5; a third heat exchanger 6; a third valve 61; a thermal buffer 7.
Detailed Description
The core of the invention is to provide an energy-saving refrigeration system which has low energy consumption, quick response, high temperature regulation precision and good stability. Another core of the present invention is to provide an air conditioner including the above energy-saving refrigeration system.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
According to the energy-saving refrigeration system provided by the invention, the high-temperature medium at the first outlet of the first heat exchanger 1 is introduced into the first outlet of the second heat exchanger 2 and the low-temperature medium at the first outlet of the second heat exchanger 2 is introduced into the mixed medium by introducing the first bypass branch 3 and the second bypass branch 4, so that bidirectional temperature compensation in the system is realized, the temperature precision of the medium can be regulated to be within +/-0.3 degrees and more, optimally, the temperature precision of the medium can be regulated to be within +/-0.1 degrees and more, the medium with a target temperature value is finally conveyed into the first inlet of the first heat exchanger 1, and the arrangement of the circulation loop can refer to the structure of a conventional cooling system.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a first embodiment of an energy-saving refrigeration system according to the present invention; fig. 2 is a schematic structural diagram of a second embodiment of an energy-saving refrigeration system according to the present invention.
In this embodiment, the economizer refrigeration system includes a circulation circuit and a first heat exchanger 1 and a second heat exchanger 2 connected in the circulation circuit, as shown in fig. 1, and further includes:
the inlet of the first bypass branch 3 is connected with the first inlet of the second heat exchanger 2, the outlet of the first bypass branch 3 is connected with the first outlet of the second heat exchanger 2, so that after the medium in the first bypass branch 3 and the medium at the second outlet of the second heat exchanger 2 are mixed into a first mixed medium, the first mixed medium flows into the first inlet of the first heat exchanger 1, and the first bypass branch 3 is provided with a first valve 31;
the inlet of the second bypass branch 4 is connected with the first outlet of the second heat exchanger 2, the outlet of the second bypass branch 4 is connected with the first inlet of the first heat exchanger 1, the medium in the second bypass branch 4 and the first mixed medium are mixed into a second mixed medium, the second mixed medium flows into the first heat exchanger 1, and the second bypass branch 4 is provided with a second valve 41.
The second heat exchanger 2, the inlet of the second bypass branch 4 and the outlet of the first bypass branch 3 are sequentially arranged in sequence; further, a controller may be further included, and the controller may be used to control the opening and closing of the first valve 31 and the second valve 41, respectively, and the first valve 31 and the second valve 41 are electronic valves, and of course, the first valve 31 and the second valve 41 may also be opened and closed manually, and at this time, the first valve 31 and the second valve 41 may be mechanical valves, and preferably, the opening and closing of the first valve 31 and the second valve 41 may be controlled by the controller.
May further comprise a first temperature sensor 21, the first temperature sensor 21 being arranged between the first outlet of the second heat exchanger 2 and the inlet of the second bypass branch 4; and a second temperature sensor 22, the second temperature sensor 22 is disposed between the outlet of the first bypass branch 3 and the outlet of the second bypass branch 4, where it should be noted that, the second temperature sensor 22 should be disposed on a pipeline after the outlet medium of the first bypass branch 3 and the first outlet medium of the second heat exchanger 2 are mixed, and the second temperature sensor 22 is used to detect the temperature of the first mixed medium, where the first valve 31 is a flow regulating valve, since the medium temperature of the first inlet of the second heat exchanger 2 differs from the medium temperature of the first outlet thereof by a relatively large amount, that is, the medium temperature of the first inlet of the second heat exchanger 2 is relatively high, so that by using the first valve 31 as a flow regulating valve with an adjustable opening, the flow of the first bypass branch 3 can be made small, for example, the medium flow of the first bypass branch 3 can be (0.1-10)% of the first outlet medium flow of the first heat exchanger 1, so that the medium flow can be mixed with the first outlet medium of the second heat exchanger 2 slowly by a small medium flow, and the medium temperature can be regulated to within ±0.0.0.0% of the temperature can be adjusted accurately.
The medium temperature at the first outlet of the second heat exchanger 2 is not different from the medium temperature after the first bypass branch 3 is mixed, so that the second valve 41 is only required to be a common valve, and the second valve 41 can be also provided with a flow regulating valve with an adjustable opening degree for precise temperature regulation, so that the purpose of precise temperature regulation can be further realized.
Alternatively, in order to achieve high-precision temperature adjustment, the precision of the first temperature sensor 21 and the second temperature sensor 22 are both ±0.3 degrees and less, the precision of the first valve 31 is 1% and less, and preferably, the precision of the first temperature sensor 21 and the second temperature sensor 22 may be both ±0.1 degrees and less, so that the precision of each temperature sensor and valve matches the temperature control precision of the system.
When the first temperature sensor 21 detects that the medium temperature at the first outlet of the second heat exchanger 2 is lower than the target temperature value, the opening of the first valve 31 is controlled to bypass the high-temperature medium at the first inlet of the second heat exchanger 2 to the outlet of the first bypass branch 3 and mix the high-temperature medium with the low-temperature medium at the first outlet of the second heat exchanger 2, so that the medium at the first outlet of the second heat exchanger 2 is heated to reach the target temperature value.
When the second temperature sensor 22 detects that the temperature of the first mixed medium is higher than the target temperature value, the second valve 41 is controlled to be opened or the opening degree of the second valve 41 is controlled, so that the low-temperature medium at the first outlet of the second heat exchanger 2 bypasses the outlet of the second bypass branch 4 to be mixed with the first mixed medium, and the first mixed medium is cooled to form a second mixed medium, so that the temperature of the second mixed medium reaches the target temperature value.
In addition, since the load of the first heat exchanger 1 is changed according to the actual application scenario, for example, the temperature requirement is increased or decreased, a third temperature sensor or a first pressure sensor for monitoring the change of the load of the first heat exchanger 1 and/or a fourth temperature sensor or a second pressure sensor are also provided; the third temperature sensor or the first pressure sensor is arranged at the first inlet of the first heat exchanger 1, and the fourth temperature sensor or the second pressure sensor is arranged at the first outlet of the first heat exchanger 1; therefore, when the load changes, the temperature or the pressure of the first inlet and the first outlet of the first heat exchanger 1 can change, and therefore, the pressure or the temperature change of the first inlet is monitored, or/and the pressure or the temperature change of the first outlet is/are monitored, the accuracy of the target temperature value and the target temperature value of the system can be updated in real time, and the heat exchange quantity of each heat exchanger can be updated at the same time, so that the medium temperature of the whole temperature regulating system is matched with the actual use.
Specifically, the first heat exchanger 1 is used as a terminal heat exchanger for exchanging heat with a part or environment needing cooling. The second heat exchanger 2 is used for cooling the high-temperature medium flowing out of the first heat exchanger 1. The medium includes, but is not limited to, a cooling liquid such as cooling water, and a fluid such as gas may be used as needed. The first outlet of the first heat exchanger 1 is in communication with the first inlet of the second heat exchanger 2, and the first outlet of the second heat exchanger 2 is in communication with the first inlet of the first heat exchanger 1. The first outlet of the first heat exchanger 1 is the water return port of the circulation loop, the first inlet of the first heat exchanger 1 is the water outlet of the circulation loop, the medium flowing out of the water outlet is provided for a device needing cooling, when the first heat exchanger 1 dissipates heat for equipment with high-precision heat dissipation requirements, the precision requirement on the temperature of the medium is higher, the medium cools the equipment through the first heat exchanger 1, and after passing through the first heat exchanger 1, the medium temperature at the first outlet of the medium is higher, and the medium needs to flow through the second heat exchanger 2 for cooling. Meanwhile, a circulating pump is arranged in the circulating loop to provide power for the flow of the medium in the circulating loop; the circulation circuit may be provided with a pressure sensor, a flow rate sensor 32, a temperature sensor, and the like, and information such as pressure, flow rate, and temperature in the circulation circuit may be monitored.
According to the energy-saving refrigeration system provided by the invention, when the temperature of the medium at the first outlet in the second heat exchanger 2 is lower than the target temperature value, the medium from the first outlet in the first heat exchanger 1 is introduced through the first bypass branch 3 by introducing the first bypass branch 3 and the second bypass branch 4, and the medium at the first outlet in the first heat exchanger 1 can be heated due to higher temperature of the medium at the first outlet in the second heat exchanger 2; after the medium at the first outlet in the second heat exchanger 2 and the medium in the first bypass branch 3 are mixed to form a first mixed medium, when the temperature of the first mixed medium is higher than a target temperature value, introducing the medium from the first outlet in the second heat exchanger 2 through the second bypass branch 4, wherein the temperature of the medium at the first outlet in the second heat exchanger 2 is lower, so that the first mixed medium can be cooled; the energy-saving refrigerating system adopts a bidirectional energy-saving temperature compensation mode, namely, high-temperature compensation utilizes a high-temperature heat source wasted in the system, low-temperature compensation utilizes a low-temperature heat source in the system, so that the requirements on temperature precision and stability are met, and meanwhile, the temperature can be quickly regulated.
In some embodiments, the first bypass branch 3 is provided with a first flow sensor 32, and the controller is connected to the first flow sensor 32, specifically, the first flow sensor 32 is used for detecting the flow in the first bypass branch 3, the controller controls the opening of the first valve 31 according to the temperature of the first outlet of the second heat exchanger 2, so as to change the flow in the first bypass branch 3, and the first flow sensor 32 may feed back the flow data in the first bypass branch 3 to the controller.
In some embodiments, the flow in both the first bypass branch 3 and the second bypass branch 4 is smaller than the flow in the circulation loop. Specifically, a part of the medium flowing out of the first outlet of the first heat exchanger 1 enters the first bypass branch 3, and a part of the medium enters the first inlet of the second heat exchanger 2, and the flow rate entering the first bypass branch 3 can be regulated specifically through the first valve 31; the control accuracy is improved by controlling the outlet flow rate of the first bypass branch 3 to be not higher than the flow rate of the first inlet of the second heat exchanger 2; since the first bypass branch 3 is used as a temperature compensation adjustment for replacing the conventional heater, the flow rate is generally smaller, and the smaller the flow rate is, the higher the relative accuracy is; through high-precision adjustment, the energy-saving cooling system meets the high-precision temperature control cooling requirement. Further, part of the medium flowing out of the first outlet of the second heat exchanger 2 enters the second bypass branch 4, and the part of the medium is mixed with the medium of the first bypass branch 3, and the flow rate entering the second bypass branch 4 can be regulated through the second valve 41; the control accuracy is improved by controlling the outlet flow rate of the second bypass branch 4 to be not higher than the flow rate of the first outlet of the second heat exchanger 2; the flow rate of the second bypass branch 4 is generally smaller, and the smaller the flow rate, the higher the relative accuracy thereof; through high-precision adjustment, the energy-saving cooling system meets the high-precision temperature control cooling requirement.
In some embodiments, a mixer 5 is also included, the outlet of the first bypass branch 3 and the first outlet of the second heat exchanger 2 being connected to an inlet of the mixer 5, the outlet of the mixer 5 being connected to the first inlet of the first heat exchanger 1. Specifically, the medium of the first bypass branch 3 and the medium of the first outlet of the second heat exchanger 2 are mixed in the mixer 5 and then flow into the first inlet of the first heat exchanger 1. Through the setting of blender 5, the even mixing of acceleration temperature promotes whole energy-conserving cooling system's efficiency and precision. Of course, the outlet of the first bypass branch 3 and the first outlet of the second heat exchanger 2 may be connected to the first inlet of the first heat exchanger 1 through the access header pipe, and mixed in the header pipe; or, the outlet of the first bypass branch 3 is connected to a pipeline between the first outlet of the second heat exchanger 2 and the first inlet of the first heat exchanger 1, so that mixing can be realized, wherein a baffle plate can be arranged inside the mixer, a gap is formed between the baffle plate and the inner wall of the mixer, the flow velocity of fluid is slowed down through the arranged baffle plate, the uniformity of the medium in the mixing inside the mixer can be better, and the baffle plate can be arranged into one or more blocks.
In some embodiments, further comprising a thermal buffer 7, the thermal buffer 7 being connected between the first inlet of the first heat exchanger 1 and the outlet of the mixer 5; the controller is used to control the second valve 41 in dependence of the temperature at the outlet of the mixer 5. In particular, in the case of the mixer 5 being provided, the thermal buffer 7 is connected between the first inlet of the first heat exchanger 1 and the outlet of the mixer 5; in the case where the mixer 5 is not provided, the thermal buffer 7 is connected between the first inlet of the first heat exchanger 1 after the connection point of the outlet of the second bypass branch 4 and the first outlet of the second heat exchanger 2. Through the setting of thermal buffer 7 to adjust the stability of temperature, make through the high accuracy fine setting of first bypass branch road 3 and second bypass branch road 4 realization temperature after, the temperature is further stable, and provide the first import of first heat exchanger 1 with the medium of temperature stabilization, realize accurate control.
In some embodiments, the first outlet of the second heat exchanger 2 is provided with a first temperature sensor 21, the outlet of the mixer 5 is provided with a second temperature sensor 22, and both the first temperature sensor 21 and the second temperature sensor 22 are connected to a controller. Specifically, the controller is configured to control the first valve 31 based on the temperature of the first temperature sensor 21 and also to control the second valve 41 based on the temperature of the second temperature sensor 22.
In some embodiments, at least one baffle member is provided within the mixer 5 with a gap between the baffle member and the inner wall of the mixer 5. That is, the barrier member is in a semi-closed state, and by providing the barrier member, the fluid in the mixer 5 is guided and the flow path in the mixer 5 is prolonged, so that the mixing thereof is more uniform. The baffle component is particularly a baffle plate, and has low cost and convenient processing.
In some embodiments, as shown in fig. 2, a third heat exchanger 6 is also included; the outlet medium of the first bypass branch 3 is mixed with the first outlet medium of the second heat exchanger 2 to form a first mixed medium, the first inlet of the third heat exchanger 6 is used for the inflow of the first mixed medium, and the first outlet of the third heat exchanger 6 is connected with the outlet of the second bypass branch 4. Specifically, the first inlet of the third heat exchanger 6 is provided for the inflow of the first mixed medium, the first inlet of the third heat exchanger 6 may be connected to the outlet of the mixer 5, and the first outlet of the third heat exchanger 6 is connected to the first inlet of the first heat exchanger 1. In the above arrangement, by introducing the third heat exchanger 6, when the temperature of the first mixed medium is higher than the target temperature value, the medium introduced into the first outlet of the second heat exchanger 2 through the second bypass branch 4 can be selected to realize cooling, or the external medium can be introduced into the third heat exchanger 6 to realize cooling, or both cooling modes can be used simultaneously; by the mode, the accuracy, efficiency and stability of medium temperature regulation can be further improved.
In some embodiments, the second heat exchanger 2 comprises a first cooling circuit, the third heat exchanger 6 comprises a second cooling circuit, the inlet of the second cooling circuit is connected with the inlet of the first cooling circuit, the outlet of the second cooling circuit is connected with the outlet of the first cooling circuit, that is, the third heat exchanger 6 and the second heat exchanger 2 select the same cooling circuit to reduce the arrangement cost of the device, and of course, a separate cooling circuit can also be adopted for the third heat exchanger 6.
In some embodiments, the second cooling circuit is provided with a third valve 61, and the controller is further configured to control the third valve 61 according to the temperature of the first mixed medium, that is, the controller is further configured to control the third valve 61 according to the temperature of the second temperature sensor 22, that is, when the second temperature sensor 22 detects that the temperature of the first mixed medium is lower than the target temperature value, the temperature of the medium entering the first heat exchanger 1 may be reduced by opening the second valve 41, or by opening the third valve 61, or by opening both the second valve 41 and the third valve 61, and by adjusting the flow rates of the second valve 41 and the third valve 61.
Of course, in order to save the installation cost of the third heat exchanger 6, a heat exchange branch may be directly arranged on the outlet pipeline of the mixer 5, a heat exchange part is arranged on the heat exchange branch, the heat exchange part is close to the pipeline at the outlet of the mixer 5 so as to perform heat exchange on the pipeline at the outlet of the mixer 5, the inlet of the heat exchange branch is connected with the inlet of the first cooling circuit, the outlet of the heat exchange branch is connected with the outlet of the first cooling circuit, and the heat exchange branch is provided with a third valve 61; the controller is also used to control the third valve 61 according to the outlet temperature of the mixer 5; the above solution makes it possible to replace the installation of the third heat exchanger 6 without changing the structure and the position of the piping at the outlet of the mixer 5. Further, the heat exchange part is a spiral tubular heat exchange part so as to improve the heat exchange efficiency.
In some embodiments, in order to facilitate the control of the first valve 31, the second valve 41 and/or the third valve 61 by the controller, the first valve 31, the second valve 41 and/or the third valve 61 are adjusting valves, however, the first valve 31, the second valve 41 and/or the third valve 61 may be cut-off valves without considering the adjustment accuracy, which is lower in cost.
In addition to the energy-saving refrigeration system, the invention also provides an air conditioner comprising the energy-saving refrigeration system, and other parts of the air conditioner refer to the prior art, and are not repeated herein.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The energy-saving refrigeration system provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.

Claims (10)

1. A two-way temperature regulating and energy saving system comprising a circulation loop and a first heat exchanger (1) and a second heat exchanger (2) connected in the circulation loop, characterized in that it further comprises:
a first bypass branch (3), wherein an inlet of the first bypass branch (3) is connected with a first inlet of the second heat exchanger (2), and an outlet of the first bypass branch (3) is connected with a first outlet of the second heat exchanger (2);
the inlet of the second bypass branch (4) is connected with the first outlet of the second heat exchanger (2), and the outlet of the second bypass branch (4) is connected with the first inlet of the first heat exchanger (1);
the inlet of the second heat exchanger (2), the inlet of the second bypass branch (4) and the outlet of the first bypass branch (3) are sequentially arranged in sequence;
the first valve (31) is arranged on the first bypass branch (3), and the second valve (41) is arranged on the second bypass branch (4).
2. The bi-directional temperature regulating energy saving system of claim 1, further comprising: a first temperature sensor (21) arranged between the first outlet of the second heat exchanger (2) and the inlet of the second bypass branch (4); a second temperature sensor (31) arranged between the outlet of the first bypass branch (3) and the outlet of the second bypass branch (4); the first valve (31) is a flow regulating valve.
3. The two-way temperature regulating and energy saving system according to claim 2, characterized in that the accuracy of the first temperature sensor (21) and the second temperature sensor (31) is within ±0.3 degrees, and the accuracy of the first valve (31) is within 1%.
4. The two-way temperature regulating energy saving system according to claim 1, further comprising a third temperature sensor or a first pressure sensor for monitoring a change in the load of the first heat exchanger (1), and/or a fourth temperature sensor or a second pressure sensor;
the third temperature sensor or the first pressure sensor is arranged at the first inlet of the first heat exchanger (1), and the fourth temperature sensor or the second pressure sensor is arranged at the first outlet of the first heat exchanger (1).
5. The two-way temperature regulating and energy saving system according to claim 1, further comprising a mixer (5), wherein the outlet of the first bypass branch (3) and the first outlet of the second heat exchanger (2) are both connected to the inlet of the mixer (5), and wherein the outlet of the mixer (5) is connected to the outlet of the second bypass branch (4).
6. The two-way temperature regulating energy saving system according to claim 5, further comprising a thermal buffer (7), said thermal buffer (7) being connected between the first inlet of the first heat exchanger (1) and the outlet of the second bypass branch (4).
7. A two-way temperature regulating energy saving system according to any one of claims 1 to 6, further comprising a third heat exchanger (6); the outlet medium of the first bypass branch (3) can be mixed with the first outlet medium of the second heat exchanger (2) to form a first mixed medium, the first inlet of the third heat exchanger (6) can be used for the inflow of the first mixed medium, and the first outlet of the third heat exchanger (6) is connected with the outlet of the second bypass branch (4).
8. The two-way temperature regulating and energy saving system according to claim 7, further comprising a first cooling pipeline exchanging heat with the second heat exchanger (2) and a second cooling pipeline exchanging heat with the third heat exchanger (6), wherein an inlet of the second cooling pipeline is connected with an inlet of the first cooling pipeline, and an outlet of the second cooling pipeline is connected with an outlet of the first cooling pipeline.
9. The two-way temperature regulating energy saving system according to claim 8, characterized in that a third valve (61) is provided on the second cooling line.
10. An air conditioner comprising an energy-saving refrigeration system, characterized in that the two-way temperature-regulating energy-saving system is the two-way temperature-regulating energy-saving system according to any one of claims 1 to 9.
CN202310734021.5A 2023-06-19 2023-06-19 Air conditioner and two-way temperature-regulating energy-saving system thereof Pending CN116518485A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310734021.5A CN116518485A (en) 2023-06-19 2023-06-19 Air conditioner and two-way temperature-regulating energy-saving system thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310734021.5A CN116518485A (en) 2023-06-19 2023-06-19 Air conditioner and two-way temperature-regulating energy-saving system thereof

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CN116518485A true CN116518485A (en) 2023-08-01

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Application Number Title Priority Date Filing Date
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