CN113883608B - Outdoor unit of multi-connected unit - Google Patents
Outdoor unit of multi-connected unit Download PDFInfo
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- CN113883608B CN113883608B CN202111199268.9A CN202111199268A CN113883608B CN 113883608 B CN113883608 B CN 113883608B CN 202111199268 A CN202111199268 A CN 202111199268A CN 113883608 B CN113883608 B CN 113883608B
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/16—Arrangement or mounting thereof
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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
- 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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- 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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- 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
- F24F2140/20—Heat-exchange fluid temperature
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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]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses a multi-connected outdoor unit, which comprises a compressor module and a heat exchanger module; the compressor module comprises a first shell, a compressor and a control module; the compressor and the control module are electrically connected and are respectively and fixedly arranged in the first shell; the heat exchanger module comprises at least one water heat exchanger or at least one air-mass heat exchanger or at least one water heat exchanger and at least one air-mass heat exchanger; the heat exchanger module is located outside the first housing and is connected with the compressor. According to the invention, the heat exchanger module is independent of the compressor module and comprises one or more types of heat exchanger modules, so that the heat exchanger module can be separately installed with the compressor module, and the installation flexibility of the multi-split outdoor unit is improved; one or more types of outdoor heat exchangers can be flexibly configured according to actual resources of an installation site, the site resources are utilized to the maximum extent, the heat exchange efficiency of the multi-connected outdoor unit is improved, and further energy is saved.
Description
Technical Field
The invention relates to the technical field of air conditioning, in particular to a multi-split outdoor unit.
Background
The multi-split air conditioner comprises a plurality of indoor units and at least one outdoor unit, and is used for central cooling or heating of small and medium buildings. Due to the shortage of natural resources and space resources, the requirement on the flexibility of air conditioner installation is higher and higher, and technicians in the field can design the size miniaturization of the multi-connected outdoor unit. However, the small size of the multi-split outdoor unit inevitably enables the noise component, namely the compressor and the fan, to be closer, and the control of noise is a problem.
In addition, due to the shortage of space resources and natural resources, new and precise control is urgently needed to be developed for the utilization scheme and the utilization method of the resources, the efficiency of the air conditioner is improved, energy is saved, and waste of space resources and energy is avoided.
Disclosure of Invention
In order to solve the problems of large size, insufficient installation flexibility and low efficiency due to the use of a single heat exchange path of a multi-connected outdoor unit in the prior art, the invention provides the multi-connected outdoor unit, which realizes different installation modes among modules and flexibly configures one or more types of outdoor heat exchangers through modular design, and improves the installation flexibility and efficiency of the multi-connected outdoor unit.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a multi-split outdoor unit, which comprises a compressor module and a heat exchanger module, wherein the compressor module is connected with the heat exchanger module;
the compressor module comprises a first shell, a compressor and a control module; the compressor is electrically connected with the control module and is respectively and fixedly arranged in the first shell;
the heat exchanger module comprises at least one water heat exchanger or at least one air heat exchanger; the heat exchanger module is located outside the first housing and is connected with the compressor.
A multi-connected outdoor unit comprises a compressor module and a heat exchanger module;
the compressor module comprises a first shell, a compressor and a control module; the compressor is electrically connected with the control module and is respectively and fixedly arranged in the first shell;
the heat exchanger module comprises at least one water heat exchanger and at least one air heat exchanger; the heat exchanger module is located outside the first housing and is connected with the compressor.
In one embodiment, the compressor module further comprises a first flow control element, a second flow control element, each connected to the compressor; each water quality heat exchanger and each air quality heat exchanger are respectively connected with the first flow control element and the second flow control element;
the control module is respectively electrically connected with the first flow control element and the second flow control element, and controls the flow rates of the first flow control element and the second flow control element to be respectively a first flow rate and a second flow rate according to the heat exchange area of each water quality heat exchanger and the heat exchange area of each air quality heat exchanger, so that the flow rates of the refrigerant are evenly distributed relative to the heat exchange area of the heat exchanger module.
In one embodiment, the control module includes a controller; the water quality heat exchanger and the air quality heat exchanger are respectively provided with a first temperature sensor and a second temperature sensor which are respectively connected with the controller, and are used for detecting the water inlet temperature of the water quality heat exchanger and the ambient temperature of the air quality heat exchanger and transmitting the temperature to the controller;
the control module controls the flow of the first flow control element and the second flow control element according to the water inlet temperature and the environment temperature.
In one embodiment, the controller is configured with a first temperature, a second temperature, a first corrected flow rate, a second corrected flow rate;
in the refrigeration mode, the controller circularly judges the temperature of the water inlet; if the temperature of the water inlet is lower than the first temperature, the first flow control element and the second flow control element are controlled to act to ensure that the water inlet is heated to a temperature lower than the first temperature
The flow rate of the first flow control element = a first flow rate-a first corrected flow rate + a second corrected flow rate;
the flow rate of the second flow control element = the second flow rate + the first corrected flow rate-the second corrected flow rate;
a multiplier factor of the first corrected flow comprises a square of a difference of the water inlet temperature and the first temperature;
the multiplier factor for the second corrected flow rate comprises a square of a difference between the ambient temperature and the second temperature.
In an embodiment, the compressor module further includes a four-way valve disposed in the first housing and respectively connected to the compressor, the first flow control element, and the second flow control element;
the controller is configured with a third temperature, a fourth temperature, a third corrected flow and a fourth corrected flow;
in the heating mode, the controller circularly judges the temperature of the water inlet; if the temperature of the water inlet is higher than the third temperature, the first flow control element and the second flow control element are controlled to act to ensure that
The flow rate of the first flow control element = the first flow rate + the third corrected flow rate-the fourth corrected flow rate;
the flow rate of the second flow control element = the second flow rate-the third corrected flow rate + the fourth corrected flow rate;
a multiplier factor of the third corrected flow comprises a square of a difference of the water inlet temperature and the third temperature; a multiplier factor for the fourth corrected flow comprises a square of a difference between the ambient temperature and the fourth temperature.
In an embodiment, the multiplier factor of the first corrected flow and the multiplier factor of the third corrected flow each further include a ratio of a heat exchange area to a heat exchange area of each water-quality heat exchanger; the multiplier factor of the second correction flow and the multiplier factor of the fourth correction flow both further comprise the heat exchange area and the ratio of the heat exchange area to the heat exchange area of each air-mass heat exchanger.
In one embodiment, the multiplier factors for the first corrected flow rate, the second corrected flow rate, the third corrected flow rate, and the fourth corrected flow rate further include an operating frequency of the compressor.
In some embodiments, the first flow control element and the second flow control element are both electronic expansion valves, and the calibers of the first flow control element and the second flow control element are respectively adapted to the heat exchange area and the heat exchange area of each water-quality heat exchanger and the heat exchange area of each air-quality heat exchanger.
In some embodiments, the flow rates of the first flow control element and the second flow control element are both realized by controlling the opening degrees of the first flow control element and the second flow control element; the multiplier factor of the first correction flow, the multiplier factor of the second correction flow, the multiplier factor of the third correction flow and the multiplier factor of the fourth correction flow respectively comprise 1/100.
Compared with the prior art, the technical scheme of the invention has the following technical effects:
the multi-connected outdoor unit comprises a compressor module and a heat exchanger module which are separated; the heat exchanger module comprises at least one water heat exchanger or at least one air-mass heat exchanger or at least one water heat exchanger and at least one air-mass heat exchanger; the compressor module and the heat exchanger module are separated, so that the heat exchanger module and the compressor module can be installed in a split mode and are connected only through the refrigerant pipe, and the installation flexibility of the multi-connected outdoor unit is improved; the heat exchanger module comprises at least one water heat exchanger or at least one wind heat exchanger or at least one water heat exchanger and at least one wind heat exchanger, so that the heat exchanger module of the multi-connected outdoor unit can be flexibly configured with one or more types of outdoor heat exchangers according to actual resources of an installation site, the site resources are utilized to the maximum extent, the heat exchange efficiency of the multi-connected outdoor unit is improved, and further, energy is saved and resource waste is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic system structure diagram of an outdoor unit of a multi-split air conditioner according to the present invention.
Reference numerals are as follows:
1. a compressor module; 2. a heat exchanger module; 3. a first flow control element; 4. a second flow control element; 11. a first housing; 12. a compressor; 13. a control module; 14. a four-way valve; 21. a water heat exchanger; 22. a wind mass heat exchanger; 23. a first temperature sensor; 24. a second temperature sensor; 211. a water inlet pipe; 212. and (4) a water outlet pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art. In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
Referring to fig. 1, the multi-split outdoor unit of the present invention includes a compressor module 1 and a heat exchanger module 2. The compressor module 1 comprises a first shell 11, a compressor 12 and a control module 13; the first housing 11 is a box body; the compressor 12 is electrically connected with the control module 13; the compressor 12 is controlled by a control module 13; the compressor 12 and the control module 13 are respectively fixedly disposed in the first housing 11.
The heat exchanger module 2 comprises at least one water heat exchanger 21 or at least one air-mass heat exchanger 22 or at least one water heat exchanger 21 and at least one air-mass heat exchanger 22; the water heat exchanger 21 and the air heat exchanger 22 exchange heat through a water medium and an air medium respectively, are arranged outside the first shell 11 and connected with the compressor 12 respectively, and are used for heat exchange of a circulating refrigerant.
The multi-connected outdoor unit has larger operation power, larger heat exchange amount and higher requirement on installation space, thereby limiting the development and use of the multi-connected outdoor unit; and because the multi-connected outdoor unit is installed in a narrow space, the efficiency of the multi-connected outdoor unit is low, the performance of the multi-connected outdoor unit is affected, and energy is wasted.
The multi-split outdoor unit is provided with the separated compressor module 1 and the heat exchanger module 2, so that the installation positions of the compressor module 1 and the heat exchanger module 2 can be flexibly arranged, and the adaptability of the multi-split outdoor unit is improved.
In addition, the heat exchanger module 2 may be only the water heat exchanger 21 or only the air heat exchanger 22 or include both the water heat exchanger 21 and the air heat exchanger 22; according to the field condition, the heat exchanger module 2 comprising the water heat exchanger 21 or the wind heat exchanger 22 or the water heat exchanger 21 and the wind heat exchanger 22 is selected by using the existing resources, so that the utilization rate of the existing resources is improved, the efficiency of the multi-connected outdoor unit is improved, and further the energy is saved.
When heat exchanger module 2 includes wind matter heat exchanger 22, compressor module 1 makes compressor 12 and wind matter heat exchanger 22's fan distance obtain controlling with heat exchanger module 2's separation installation, prevents because the noise problem that the problem of installation space caused, promotes user experience.
In an embodiment, referring to fig. 1, when the heat exchanger module 2 includes both the water heat exchanger 21 and the wind heat exchanger 22, the multi-split outdoor unit further includes a first flow control element 3 and a second flow control element 4, which may be disposed in the first housing 11, conveniently connected to the control module 13, and connected to the control module 13; the first flow control element 3 and the second flow control element 4 may not be arranged in the first housing 11, and are connected with the control module 13 through an external arrangement wire, so that the flexibility of installation of the first flow control element 3 and the second flow control element 4 is increased, and the installation difficulty of the first flow control element and the second flow control element is reduced.
The first flow control element 3 and the second flow control element 4 are respectively connected and communicated with the compressor 12; each water heat exchanger 21 and each air heat exchanger 22 are respectively connected and communicated with the first flow control element 3 and the second flow control element 4; the first flow control element 3 and the second flow control element 4 are respectively used for controlling the flow of the refrigerant flowing through each water heat exchanger 21 and each air heat exchanger 22.
The control module 13 is respectively electrically connected with the first flow control element 3 and the second flow control element 4, and the control module 13 controls the flow rates of the first flow control element 3 and the second flow control element 4 to be respectively a first flow rate and a second flow rate according to the heat exchanger area of each water heat exchanger 21 and the heat exchange area of each air heat exchanger 22, so that the refrigerant flow rate is evenly distributed relative to the total heat exchange area of the heat exchanger module 2, each water heat exchanger 21 and each air heat exchanger 22 are fully utilized, and the heat exchange efficiency of the heat exchanger module 2 is improved.
In one embodiment, referring to fig. 1, the control module 13 includes an electronic control box fixedly disposed within the first housing 11.
In one embodiment, referring to fig. 1, the water heat exchanger 21 includes a water inlet pipe 211 and a water outlet pipe 212. Set up first temperature sensor 23, second temperature sensor 24 on quality of water heat exchanger 21, wind matter heat exchanger 22 respectively, be connected with control module 13 respectively for detect the water inlet temperature of inlet tube 211, the ambient temperature of wind matter heat exchanger 22, and transmit for control module 13.
The control module 13 controls the flow of the first flow control element 3 and the second flow control element 4 according to the water inlet temperature and the ambient temperature.
Specifically, in an embodiment, the multi-split outdoor unit is a refrigeration air conditioner, and the control module 13 includes a controller configured with a first temperature, a second temperature, a first correction flow, and a second correction flow.
When the water inlet is in operation, the controller carries out circulating judgment on the temperature of the water inlet; if the temperature of the water inlet is lower than the first temperature, the controller respectively controls the first flow control element 3 and the second flow control element 4 to act, so that the water inlet is enabled to be at the first temperature
The flow rate of the first flow control element 3 = the first flow rate-the first corrected flow rate + the second corrected flow rate;
the flow rate of the second flow control element 4 = the second flow rate + the first corrected flow rate-the second corrected flow rate.
The multiplier factor for the first corrected flow rate comprises a square of a difference between the water inlet temperature and the first temperature;
the multiplier factor for the second corrected flow rate includes a square of a difference between the ambient temperature and the second temperature.
In one embodiment, referring to fig. 1, the multi-split outdoor unit is an air conditioner; the compressor module 1 further includes a four-way valve 14 disposed in the first housing 11 and connected to and communicated with the compressor 12 and the first and second flow control elements 3 and 4, respectively.
The controller is configured with a third temperature, a fourth temperature, a third correction flow and a fourth correction flow;
when the multi-connected outdoor unit is in a heating mode, the controller performs circulating judgment on the temperature of the water inlet; if the water inlet temperature is greater than the third temperature; the controller controls the first flow control element 3 and the second flow control element 4 to operate
The flow rate of the first flow control element 3 = the first flow rate + the third corrected flow rate-the fourth corrected flow rate;
the flow rate of the second flow control element 4 = the second flow rate-the third corrected flow rate + the fourth corrected flow rate;
wherein the multiplier factor of the third corrected flow comprises a square of a difference between the water inlet temperature and the third temperature; the multiplier factor for the fourth corrected flow comprises a square of a difference between the ambient temperature and the fourth temperature.
In an embodiment, referring to fig. 1, the heat exchanger module 2 of the multi-split outdoor unit includes a water heat exchanger 21 and a wind heat exchanger 22; and the heat exchange areas of the water heat exchanger 21 and the air heat exchanger 22 can be combined in any proportion.
The multiplier factor of the first correction flow and the multiplier factor of the third correction flow both also comprise the ratio of the heat exchange area of the water quality heat exchanger 21 to the total heat exchange area of the total heat exchanger module 2; the multiplier factor of the second corrected flow and the multiplier factor of the fourth corrected flow both further include the ratio of the heat exchange area of the wind mass heat exchanger 22 to the total heat exchange area of the heat exchanger module 2.
The flexibility that the heat transfer area of each type of heat exchanger set up is improved to this embodiment, improves the refrigerant flow control's of each type of heat exchanger accuracy nature, improves the efficiency of the outdoor unit of the multi-connected air room.
In one embodiment, the first flow rate is a result of multiplying a ratio of a flow rate of a refrigerant, which is calculated independently when the water heat exchanger 21 is separately installed, to a heat exchange area of the water heat exchanger 21 when the water heat exchanger 21 and the air heat exchanger 22 are installed; the second flow rate is a result of multiplying the ratio of the flow rate of the refrigerant, which is calculated independently when the air-to-mass heat exchanger 22 is separately provided, to the heat exchange area of the air-to-mass heat exchanger 22 when the water-to-mass heat exchanger 21 and the air-to-mass heat exchanger 22 are provided.
The embodiment improves the flexibility of the heat exchange area setting of each type of heat exchanger, improves the accuracy of the refrigerant flow control of each type of heat exchanger, and improves the efficiency of the multi-unit outdoor unit.
In one embodiment, the first corrected flow multiplier factor, the second corrected flow multiplier factor, the third corrected flow multiplier factor, and the fourth corrected flow multiplier factor each further include the operating frequency of the compressor 12.
The present embodiment adjusts the flow rates of the first flow control element 3 and the second flow control element 4 according to the operating frequency of the compressor 12, simplifies the control, and improves the accuracy of the control.
In an embodiment, the first flow control element 3 and the second flow control element 4 are both electronic expansion valves, and the aperture settings thereof are respectively set according to the ratio of the heat exchange area of the water heat exchanger 21 and the ratio of the heat exchange area of the air heat exchanger 22, so that the flow rate flowing through the electronic expansion valves is adapted to the area of the water heat exchanger 21 and the area of the air heat exchanger 22 which are set in the heat exchanger module 2.
In one embodiment, the flow control of the first flow control element 3 and the second flow control element 4 is realized by controlling the opening degree thereof. The multiplier factor of the first correction flow, the multiplier factor of the second correction flow, the multiplier factor of the third correction flow and the multiplier factor of the fourth correction flow all further comprise 1/100.
According to the multi-connected outdoor unit, the first correction flow, the second correction flow, the third correction flow and the fourth correction flow are all corresponding to the opening step numbers of the first flow control element 3 and the second flow control element 4 by setting a factor of 1/100; when the first flow rate and the second flow rate are respectively the opening degrees of the first flow control element 3 and the second flow control element 4, the control of the controller on the first flow control element 3 and the second flow control element 4 can be simplified, and the control efficiency is improved.
In one embodiment, the first temperature is in a range of 15 ℃ to 25 ℃; the second temperature is in the range of 25-35 ℃; the third temperature is 5-15 ℃; the fourth temperature is in the range of 0 ℃ to 5 ℃.
A first correction coefficient = (inlet water temperature-first temperature) × operating frequency/100;
a second correction coefficient = (ambient temperature-second temperature) × operating frequency/100;
a third correction coefficient = (inlet water temperature-third temperature) × operating frequency/100;
the fourth correction coefficient = (ambient temperature-fourth temperature) × operating frequency/100.
The first correction coefficient, the second correction coefficient, the third correction coefficient, and the fourth correction coefficient are all in the range of [1,10].
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. An outdoor unit of a multi-split type, comprising:
the compressor module comprises a first shell, a compressor and a control module; the compressor is electrically connected with the control module and is respectively and fixedly arranged in the first shell;
the heat exchanger module comprises at least one water quality heat exchanger and at least one air quality heat exchanger; the heat exchanger module is positioned outside the first shell and is connected with the compressor; the compressor module further comprises a first flow control element and a second flow control element which are respectively connected with the compressor; each water quality heat exchanger and each air quality heat exchanger are respectively connected with the first flow control element and the second flow control element;
the control module is respectively and electrically connected with the first flow control element and the second flow control element, and the flow of the first flow control element and the flow of the second flow control element are respectively controlled to be a first flow and a second flow according to the heat exchange area of each water quality heat exchanger and the heat exchange area of each air quality heat exchanger, so that the flow of a refrigerant is evenly distributed relative to the heat exchange area of the heat exchanger module; the control module comprises a controller; the water heat exchanger and the air heat exchanger are respectively provided with a first temperature sensor and a second temperature sensor which are respectively connected with the controller, and the water heat exchanger and the air heat exchanger are used for detecting the water inlet temperature of the water heat exchanger and the ambient temperature of the air heat exchanger and transmitting the temperature to the controller;
the control module controls the flow of the first flow control element and the second flow control element according to the water inlet temperature and the environment temperature; the controller is configured with a first temperature, a second temperature, a first correction flow and a second correction flow;
in the refrigeration mode, the controller circularly judges the temperature of the water inlet; if the temperature of the water inlet is lower than the first temperature, the first flow control element and the second flow control element are controlled to act to ensure that the water inlet is heated to a temperature lower than the first temperature
The flow rate of the first flow control element = a first flow rate-a first corrected flow rate + a second corrected flow rate;
the flow rate of the second flow control element = the second flow rate + the first corrected flow rate-the second corrected flow rate;
a multiplier factor of the first corrected flow comprises a square of a difference of the water inlet temperature and the first temperature;
the multiplier factor for the second corrected flow rate comprises a square of a difference between the ambient temperature and the second temperature.
2. A multi-split outdoor unit according to claim 1, wherein the compressor module further comprises a four-way valve disposed in the first housing and connected to the compressor, the first flow control element, and the second flow control element, respectively;
the controller is configured with a third temperature, a fourth temperature, a third correction flow and a fourth correction flow;
in the heating mode, the controller circularly judges the temperature of the water inlet; if the water inlet temperature is higher than the third temperature, the first flow control element and the second flow control element are controlled to act to enable the water inlet temperature to be higher than the third temperature
The flow rate of the first flow control element = the first flow rate + the third corrected flow rate-the fourth corrected flow rate;
the flow rate of the second flow control element = the second flow rate-the third corrected flow rate + the fourth corrected flow rate;
a multiplier factor of the third corrected flow comprises a square of a difference of the water inlet temperature and the third temperature; a multiplier factor for the fourth corrected flow rate includes a square of a difference between the ambient temperature and the fourth temperature.
3. A multi-split outdoor unit according to claim 2, wherein the multiplier factor of the first corrected flow and the multiplier factor of the third corrected flow each further include a heat exchange area and an area ratio of each water heat exchanger; the multiplier factor of the second correction flow and the multiplier factor of the fourth correction flow both further comprise the heat exchange area and the ratio of the heat exchange area to the heat exchange area of each air-mass heat exchanger.
4. A multi-split outdoor unit according to claim 2, wherein each of the first corrected flow multiplier factor, the second corrected flow multiplier factor, the third corrected flow multiplier factor and the fourth corrected flow multiplier factor further comprises an operating frequency of a compressor.
5. The multi-split outdoor unit according to any one of claims 2 to 4, wherein the first flow control element and the second flow control element are electronic expansion valves, and the calibers of the first flow control element and the second flow control element are respectively adapted to the heat exchange area of each water heat exchanger and the heat exchange area of each wind heat exchanger.
6. The multi-split outdoor unit according to claim 5, wherein the flow rates of the first flow control element and the second flow control element are controlled by controlling the opening degrees thereof; the multiplier factor of the first correction flow, the multiplier factor of the second correction flow, the multiplier factor of the third correction flow and the multiplier factor of the fourth correction flow respectively comprise 1/100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111199268.9A CN113883608B (en) | 2021-10-14 | 2021-10-14 | Outdoor unit of multi-connected unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111199268.9A CN113883608B (en) | 2021-10-14 | 2021-10-14 | Outdoor unit of multi-connected unit |
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| Publication Number | Publication Date |
|---|---|
| CN113883608A CN113883608A (en) | 2022-01-04 |
| CN113883608B true CN113883608B (en) | 2023-03-17 |
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| CN202111199268.9A Active CN113883608B (en) | 2021-10-14 | 2021-10-14 | Outdoor unit of multi-connected unit |
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| CN104154597A (en) * | 2014-08-14 | 2014-11-19 | 铁道第三勘察设计院集团有限公司 | Dual-purpose heat exchange multi-connection air conditioner device |
| EP3081881A1 (en) * | 2015-04-17 | 2016-10-19 | Daikin Europe N.V. | Compressor unit for an air conditioner and heat source unit for an air conditioner comprising the compressor unit and a heat source unit |
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| WO2019043771A1 (en) * | 2017-08-29 | 2019-03-07 | 三菱電機株式会社 | Heat exchange unit and refrigeration cycle device |
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| CN112555981A (en) * | 2020-12-28 | 2021-03-26 | 珠海格力电器股份有限公司 | Air conditioning unit |
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| CN107101336A (en) * | 2017-05-05 | 2017-08-29 | 广东美的暖通设备有限公司 | Convertible frequency air-conditioner and its frequency-variable module radiator condensation prevention control method |
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