CN112984595B - Ground heating unit - Google Patents
Ground heating unit Download PDFInfo
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- CN112984595B CN112984595B CN202110261859.8A CN202110261859A CN112984595B CN 112984595 B CN112984595 B CN 112984595B CN 202110261859 A CN202110261859 A CN 202110261859A CN 112984595 B CN112984595 B CN 112984595B
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- air conditioning
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- defrosting
- modules
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1039—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump
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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]
- Y02B30/12—Hot water central heating systems using heat pumps
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- Engineering & Computer Science (AREA)
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- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to a floor heating unit which comprises at least two groups of air conditioner modules and at least one group of floor heating modules. When the outdoor environment temperature belongs to a first temperature interval, the air conditioning module is completely heated and operated; when the outdoor environment temperature belongs to a second temperature range, controlling at most n-1 groups of air conditioning modules to perform heating operation and at least one group of air conditioning modules to stop, and when the air conditioning modules need defrosting, controlling the stopped air conditioning modules to perform heating operation, supplementing the heat reduced by the defrosting air conditioning modules and ensuring the comfort of the indoor temperature; when the outdoor environment temperature belongs to the third temperature range, one part of the air conditioning modules are controlled to heat, the other part of the air conditioning modules are stopped, when the air conditioning modules need defrosting, all the air conditioning modules in the heating operation are controlled to defrost, and all the air conditioning modules in the stop state are controlled to heat. The invention can ensure that enough air-conditioning modules are in heating operation, maintain the water temperature to be stable, ensure the indoor temperature to be stable and comfortable, and improve the user experience.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a floor heating unit.
Background
When the air-cooled air conditioning unit heats in winter, in the heat absorption process of the heat pump, water vapor in the air can be gradually condensed on the surface of the outdoor heat exchanger, a thick layer of white frost can be formed on the surface of the heat exchanger after a little long time, the heat exchange effect of the heat exchanger is seriously influenced, and the heating capacity of the heat pump is greatly reduced. Moreover, after frosting, the outdoor heat exchanger has poor long-term heat exchange, and key parts of the air conditioner are easily damaged.
In order to ensure the heat exchange efficiency of an outdoor heat exchanger and the reliability of a heat pump of an air conditioning unit, the main solution at present is to stop a compressor, switch a four-way valve to a refrigeration state, then start the compressor to discharge hot gas into the outdoor heat exchanger for defrosting, and stop the compressor after defrosting is switched to a heating state and then start heating.
For the unit that can ally oneself with more, the host computer can control the slave computer and start the machine at the same time basically, because the operational environment is the same with the heating capacity, the condition of frosting of each machine heat exchanger is also the same basically, basically can defrost simultaneously, the defrosting process is the refrigeration process, can cause the influence to indoor heat exchanger temperature to influence the temperature of floor heating module, cause indoor temperature fluctuation and uncomfortable, influence user experience.
Disclosure of Invention
The invention provides a floor heating unit, which solves the technical problem of poor comfort caused by indoor temperature fluctuation due to a defrosting mode of an outdoor heat exchanger in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a floor heating unit, includes at least two sets of air conditioner module and at least a set of floor heating module, air conditioner module includes compressor, cross valve, first heat exchanger, throttling arrangement and second heat exchanger, the second heat exchanger has water inlet and delivery port, water inlet and delivery port with the floor heating module meets, floor heating unit still includes:
the environment temperature detection module is used for detecting the environment temperature Ta;
the control module is used for controlling all the air conditioning modules to perform heating operation when the ambient temperature Ta belongs to a first temperature interval; the system comprises a control module, a control module and a control module, wherein the control module is used for controlling at most n-1 groups of air conditioning modules to perform heating operation and at least one group of air conditioning modules to stop when the ambient temperature Ta belongs to a second temperature range, and is used for controlling the air conditioning module which sends out a defrosting request to perform defrosting operation and controlling the stopped air conditioning module to perform heating operation when receiving the defrosting request of the air conditioning modules; the air conditioner control system is used for controlling n1 groups of air conditioner modules to perform heating operation and controlling n2 groups of air conditioner modules to stop when the ambient temperature Ta belongs to a third temperature interval, controlling the air conditioner modules to perform defrosting operation of the heating operation and controlling the stopped air conditioner modules to perform heating operation when a defrosting request of the air conditioner modules is received, wherein n1+ n2= n, | n1-n2 | is less than or equal to 2, and the temperature of the first temperature interval is higher than that of the second temperature interval.
Compared with the prior art, the technical scheme of the invention has the following technical effects: the floor heating unit comprises at least two groups of air conditioner modules and at least one group of floor heating modules. The control module determines the number of heating operations of the air conditioning module according to the ambient temperature detected by the ambient temperature detection module, when the outdoor ambient temperature belongs to a first higher temperature interval, the probability of frosting is low, and at the moment, the air conditioning module performs all heating operations; when the outdoor environment temperature belongs to a second lower temperature range, the probability of frosting is high, at the moment, at most n-1 groups of air conditioning modules are controlled to perform heating operation, at least one group of air conditioning modules is controlled to stop, and when the air conditioning modules need defrosting, the stopped air conditioning modules are controlled to perform heating operation, so that the heat reduced by the defrosting air conditioning modules is supplemented, and the comfort of the indoor temperature is ensured; when the outdoor environment temperature belongs to a lower third temperature interval, the frosting possibility is the largest, at the moment, one part of air conditioning modules are controlled to heat and operate, the other part of air conditioning modules are stopped, when the air conditioning modules need defrosting, all the air conditioning modules which are controlled to heat and operate are defrosted, and all the air conditioning modules which are controlled to stop are controlled to heat. The invention can ensure that enough air-conditioning modules are in heating operation, maintain the water temperature to be stable, ensure the indoor temperature to be stable and comfortable, and improve the user experience.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a group of air conditioning modules according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a floor heating unit according to a specific embodiment of the invention.
Fig. 3 is a schematic block diagram of a floor heating unit according to a specific embodiment of the present invention.
Fig. 4 is a control flow chart of the floor heating unit according to the embodiment of the invention.
Fig. 5 is a flowchart illustrating an air conditioning module determining whether to send a defrost request according to an embodiment of the present invention.
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, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled 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.
The embodiment provides a floor heating unit which comprises at least two groups of air conditioner modules and at least one group of floor heating modules. As shown in fig. 2, the floor heating unit in this embodiment includes a master 1, a slave 2, …, and a slave n connected in parallel, a floor heating 1, …, and a floor heating m connected in parallel, where n and m may be the same or different.
The master 1, the slaves 2, … and the slave n can communicate with each other, and the master 1 communicates with the control module.
As shown in fig. 1, the air conditioning module includes a compressor 1, a four-way valve 9, a first heat exchanger 2, a throttling device 3 and a second heat exchanger 11, the second heat exchanger 11 is a double-pipe heat exchanger and has a water inlet and a water outlet, the water inlets of all the air conditioning modules are connected, the water outlets of all the air conditioning modules are connected, the water inlets and the water outlets are connected with the floor heating module, and the rest of the components are not described again.
The floor heating unit is used by connecting a plurality of groups of air conditioning modules in parallel, and water outlets of the air conditioning modules are connected to a water outlet pipeline to convey heated water to the floor heating modules in a room; the water inlet of each air conditioning module is connected to a water inlet pipeline, and water after heat exchange with the floor heating modules in the room is collected back to the air conditioning modules for heating; the water inlet pipeline and the water outlet pipeline are respectively connected with floor heating modules in different rooms; the control module is connected with the host 1, controls the unit to operate and feeds back unit parameters; the host machine is connected with each slave machine through a communication line to carry out communication control. The host 1 receives the control command of the control module, and after judging the working mode and the computing capacity requirement, the control command is distributed to each slave machine, and each slave machine executes control.
As shown in fig. 3, the floor heating unit further comprises an ambient temperature detection module and a control module.
And the ambient temperature detection module is positioned outside the room and used for detecting the outdoor ambient temperature Ta.
And the control module is used for controlling the running state of the air conditioning module according to the ambient temperature Ta.
Specifically, the control module is used for controlling all the air conditioning modules to perform heating operation when the ambient temperature Ta belongs to a first temperature interval; the system comprises a control module, a control module and a control module, wherein the control module is used for controlling at most n-1 groups of air conditioning modules to perform heating operation and at least one group of air conditioning modules to stop when the ambient temperature Ta belongs to a second temperature range, and is used for controlling the air conditioning module which sends a defrosting request to perform defrosting operation and controlling the stopped air conditioning module to perform heating operation when receiving the defrosting request of the air conditioning modules; the air conditioner control system is used for controlling n1 groups of air conditioner modules to perform heating operation and controlling n2 groups of air conditioner modules to stop when the ambient temperature Ta belongs to a third temperature interval, controlling the air conditioner modules to perform defrosting operation of the heating operation and controlling the stopped air conditioner modules to perform heating operation when a defrosting request of the air conditioner modules is received, wherein n1+ n2= n, | n1-n2 | is less than or equal to 2, and the temperature of the first temperature interval is higher than that of the second temperature interval.
Preferably, the control module is used for controlling the air conditioning module in the defrosting operation to stop after defrosting is finished so as to serve as a standby air conditioning module when other air conditioning modules defrost, and when other air conditioning modules defrost, the stopped air conditioning module operates to heat, so that the comfort of the indoor temperature is ensured.
And the control module is used for sequentially defrosting the corresponding air conditioning modules according to the time sequence of the received defrosting requests of the air conditioning modules when the ambient temperature Ta belongs to the second temperature interval.
Furthermore, the control module is used for controlling a group of air conditioning modules to stop when the ambient temperature Ta belongs to the second temperature interval, and the control module is used for sequentially defrosting the air conditioning modules when two or more groups of defrosting requests of the air conditioning modules are received at the same time.
The mode that the control module is used for controlling the air-conditioning module sending the defrosting request to perform defrosting operation when the defrosting request of the air-conditioning module is received in the second temperature interval is as follows: and controlling the four-way valve of the air conditioner module sending the defrosting request to change direction, wherein the second heat exchanger is in a heating state so as to defrost the second heat exchanger.
In order to reduce the influence of the defrosting process on the indoor comfort level as much as possible, different defrosting modes are carried out according to the frosting degree:
the second temperature interval comprises a high-temperature interval and a low-temperature interval, and the control module is used for controlling the air-conditioning module sending the defrosting request to perform defrosting operation when the defrosting request of the air-conditioning module is received in the high-temperature interval in the following mode: controlling a compressor of the air conditioning module sending the defrosting request to stop, and enabling a fan corresponding to a first heat exchanger of the air conditioning module sending the defrosting request to run at a high speed; when the high temperature interval, it is easier to change the frost, only can reach the purpose of quick defrosting through the convection defrosting this moment, and the second heat exchanger does not produce the heat, but does not refrigerate, can not cause the cooling to indoor comfort level, and at this moment, the air conditioning module through shutting down the commentaries on classics heat compensates the heat that first heat exchanger does not produce. The control module is used for controlling the defrosting operation mode of the air conditioning module sending the defrosting request when the defrosting request of the air conditioning module is received in the low-temperature section as follows: controlling the four-way valve of the air conditioning module sending the defrosting request to change direction; when the air conditioner is in a low-temperature interval, defrosting is difficult, the second heat exchanger is in a heating state at the moment so as to quickly defrost the second heat exchanger, the first heat exchanger is in a refrigerating state, and cold energy generated by the first heat exchanger is compensated through the air conditioner module which is stopped to be heated.
Wherein, Ta belongs to the first temperature interval, namely Ta is more than or equal to T1; ta belongs to the high temperature interval of the second temperature interval, namely T2< Ta < T1; ta belongs to the low-temperature interval of the second temperature interval, namely T3 is more than or equal to Ta and less than or equal to T2; ta belongs to the third temperature interval, namely Ta is less than or equal to T3, wherein T1 is more than T2 is more than T3.
The air conditioning module comprises odd-numbered and even-numbered air conditioning units, the odd-numbered air conditioning unit and the even-numbered air conditioning unit are arranged in pairs, the control module is used for controlling the odd-numbered air conditioning module to perform heating operation and controlling the even-numbered air conditioning module to stop when the ambient temperature Ta belongs to a third temperature interval, and is used for controlling the air conditioning module performing heating operation and controlling the stopped air conditioning module to perform heating operation when a defrosting request of at least one air conditioning module is received; or the control module is used for controlling the even-numbered air conditioning modules to perform heating operation and controlling the odd-numbered air conditioning modules to stop when the ambient temperature Ta belongs to the third temperature interval, and is used for controlling the air conditioning modules performing heating operation and controlling the stopped air conditioning modules to perform heating operation when defrosting requests of the air conditioning modules are received.
Preferably, the control module is used for controlling the odd-numbered air conditioning modules and the even-numbered air conditioning modules to alternately perform heating operation. Specifically, the odd-numbered air conditioning modules perform heating operation and stop, when the air conditioning modules send defrosting requests, the odd-numbered air conditioning blocks perform defrosting, the even-numbered air conditioning modules perform heating operation, after defrosting is finished, the odd-numbered air conditioning modules stop, when the air conditioning modules send defrosting requests, the odd-numbered air conditioning modules perform heating operation, the even-numbered air conditioning modules perform defrosting, and after defrosting is finished, the even-numbered air conditioning modules stop and cycle in sequence.
As shown in fig. 4, the control process of the floor heating unit is as follows:
and S1, starting the computer.
And S2, detecting the outdoor environment temperature Ta.
S3, judging that Ta belongs to the first temperature interval, if yes, going to step S4, otherwise, going to step S5.
And S4, controlling all air conditioning modules to perform heating operation without defrosting.
S5, judging that Ta belongs to the high-temperature interval of the second temperature interval, if yes, entering step S6, and if not, entering step S11.
And S6, controlling at most n-1 groups of air conditioning modules to perform heating operation and stopping at least one group of air conditioning modules.
And S7, judging whether a defrosting request is received, if so, entering the step S8, and otherwise, entering the step S6.
And S8, controlling the compressor of the air conditioning module sending the defrosting request to stop and controlling the fan corresponding to the first heat exchanger to run at a high speed.
And S9, judging whether defrosting is finished, if so, entering the step S10, and otherwise, entering the step S8.
And S10, stopping the air conditioning module after defrosting, and entering the step S7.
S11, judging that Ta belongs to the low-temperature interval of the second temperature interval, if yes, going to step S12, otherwise, going to step S17.
And S12, controlling at most n-1 groups of air conditioning modules to perform heating operation and stopping at least one group of air conditioning modules.
And S13, judging whether a defrosting request is received, if so, entering the step S14, and otherwise, entering the step S12.
And S14, controlling the four-way valve of the air conditioning module sending the defrosting request to change direction.
And S15, judging whether defrosting is finished, if so, entering the step S16, and otherwise, entering the step S14.
And S16, stopping the air conditioning module after defrosting, and entering the step S13.
S17 and Ta belong to the third temperature range.
And S18, controlling the even-numbered air conditioning modules to perform heating operation, and controlling the odd-numbered air conditioning modules to stop.
And S19, judging whether a defrosting request is received, if so, entering the step S20, and otherwise, entering the step S18.
And S20, controlling the four-way valve of the air conditioner module with the even number to change direction and controlling the air conditioner module with the odd number to heat.
And S21, judging whether defrosting is finished, if so, entering the step S22, and otherwise, entering the step S20.
And S22, controlling the even-numbered air conditioning modules to stop, and controlling the odd-numbered air conditioning modules to heat.
And S23, judging whether a defrosting request is received, if so, entering the step S24, and otherwise, entering the step S22.
And S24, controlling the four-way valve of the air conditioner module with odd number to change direction and controlling the air conditioner module with even number to heat.
And S25, judging whether the defrosting pipe is finished or not, if so, entering the step S18, and otherwise, entering the step S24.
The air conditioning module includes:
the fan current detection module is used for detecting the fan current of the first heat exchanger;
the fan rotating speed detection module is used for detecting the fan rotating speed of the first heat exchanger;
the air conditioning module is used for determining whether to send out a defrosting request according to the fan current and the fan rotating speed.
Specifically, the air conditioning module is configured to determine to send a defrosting request when the fan current I > a first set current I1 and the fan speed n < the first set speed n1, or the fan current I > a second set current I2, or the fan speed n < the second set speed n2, where the second set current I2> the first set current I1, and the first set speed n1> the second set speed n 2.
The fan rotating speed comprises a plurality of gears, and the first set current I1, the second set current I2, the first set rotating speed n1 and the second set rotating speed n2 of different gears are different. The higher the gear of the fan is, the larger the set current is, and the larger the set rotating speed is.
Each air conditioning module judges whether to defrost the air conditioner module and feeds back the defrosting to the host. And each air conditioning module judges whether the first heat exchanger frosts and the frosting degree through the current and the rotating speed of the fan.
When the first heat exchanger frosts, the fins of the first heat exchanger are frosted and blocked, the wind resistance is increased, the load of the fan under the corresponding gear is increased, the current is increased, and if the frosting is serious, the fan does not drive the load, and the rotating speed is reduced. Therefore, whether the first heat exchanger frosts and the frosting degree can be judged through the current and the rotating speed of the fan.
Taking fig. 5 as an example, the fan includes a low gear and a high gear:
and S1, starting the computer.
S2, judging the gear of the fan, if the gear is a low gear, entering the step S3, otherwise, entering the step S6.
S3, judging whether the fan current I is larger than the first set current I1 and the fan speed n is smaller than the first set speed n1, if yes, entering the step S9, and if not, entering the step S4.
S4, judging whether the fan current I is larger than the second set current I2, if so, entering the step S9, otherwise, entering the step S5.
S5, judging whether the fan rotating speed n is less than a second set rotating speed n2, if so, entering a step S9, and if not, entering a step S2.
S6, judging whether the fan current I is larger than the first set current I3 and the fan speed n is smaller than the first set speed n3, if yes, entering the step S9, and if not, entering the step S7.
S7, judging whether the fan current I is larger than the second set current I4, if so, entering the step S9, otherwise, entering the step S8.
S8, judging whether the fan rotating speed n is less than a second set rotating speed n2, if so, entering a step S9, and if not, entering a step S2.
And S9, sending a defrosting request.
Whether the heat exchanger frosts and the frosting degree is judged through the current and the rotating speed of the fan, the current and the rotating speed of the fan are monitored by means of the existing electric control system, a new device does not need to be added, and the cost is reduced.
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 included in 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 (12)
1. The utility model provides a floor heating unit, includes at least two sets of air conditioner module and at least a set of module of heating up, air conditioner module includes compressor, cross valve, first heat exchanger, throttling arrangement and second heat exchanger, the second heat exchanger has water inlet and delivery port, water inlet and delivery port with the module of heating up meets, its characterized in that, floor heating unit still includes:
the environment temperature detection module is used for detecting the outdoor environment temperature Ta;
the control module is used for controlling all the air conditioning modules to perform heating operation when the outdoor environment temperature Ta belongs to a first temperature interval; the system comprises a control module, a control module and a control module, wherein the control module is used for controlling at most n-1 groups of air conditioning modules to perform heating operation and at least one group of air conditioning modules to stop when the outdoor environment temperature Ta belongs to a second temperature range, and is used for controlling the air conditioning module which sends out a defrosting request to perform defrosting operation and controlling the stopped air conditioning module to perform heating operation when receiving the defrosting request of the air conditioning modules; the system comprises a controller, a first temperature interval, a second temperature interval, a third temperature interval and a fourth temperature interval, wherein the controller is used for controlling n1 groups of air conditioning modules to perform heating operation and controlling n2 groups of air conditioning modules to stop when the outdoor environment temperature Ta belongs to the third temperature interval, and is used for controlling the air conditioning modules to perform defrosting operation and controlling the air conditioning modules to perform heating operation when a defrosting request of the air conditioning modules is received, wherein n1+ n2= n, | n1-n2 | is less than or equal to 2, the temperature of the first temperature interval is higher than that of the second temperature interval, and the temperature of the second temperature interval is higher than that of the third temperature interval; the control module is used for controlling the odd-numbered air conditioning module to perform heating operation and controlling the even-numbered air conditioning module to stop when the outdoor environment temperature Ta belongs to a third temperature range, and is used for controlling the air conditioning module performing heating operation and controlling the stopped air conditioning module to perform heating operation when a defrosting request of at least one air conditioning module is received; or the control module is used for controlling the even-numbered air conditioning modules to perform heating operation and controlling the odd-numbered air conditioning modules to stop when the outdoor environment temperature Ta belongs to the third temperature interval, and is used for controlling the air conditioning modules performing heating operation and controlling the stopped air conditioning modules to perform heating operation when defrosting requests of the air conditioning modules are received.
2. The floor heating unit according to claim 1, wherein the control module is used for controlling the air conditioning module in defrosting operation to stop after defrosting is completed.
3. The floor heating unit according to claim 1, wherein the control module is configured to sequentially defrost the corresponding air conditioning modules according to a time sequence of receiving the defrosting request of the air conditioning modules when the outdoor environment temperature Ta belongs to the second temperature interval.
4. The floor heating unit according to claim 3, wherein the control module is configured to control a group of air conditioning modules to stop when the outdoor environment temperature Ta belongs to a second temperature range, and the control module is configured to sequentially defrost the air conditioning modules when two or more defrosting requests of the air conditioning modules are received at the same time.
5. The floor heating unit according to any one of claims 1 to 4, wherein the second temperature zone includes a high temperature zone and a low temperature zone, and the control module is configured to control the air conditioning module that sends out the defrosting request to perform defrosting operation in a manner that when the defrosting request of the air conditioning module is received in the high temperature zone: controlling a compressor of the air-conditioning module sending the defrosting request to stop, wherein a fan corresponding to a first heat exchanger of the air-conditioning module sending the defrosting request runs at a high speed; the control module is used for controlling the defrosting operation mode of the air conditioning module sending the defrosting request when the defrosting request of the air conditioning module is received in the low-temperature section as follows: controlling the four-way valve of the air conditioner module sending the defrosting request to change direction;
or, the mode that the control module is used for controlling the air-conditioning module sending the defrosting request to perform defrosting operation when the defrosting request of the air-conditioning module is received in the second temperature interval is as follows: and controlling the four-way valve of the air conditioner module sending the defrosting request to change direction.
6. The floor heating unit according to claim 1, wherein the control module is used for controlling the odd-numbered air conditioning modules and the even-numbered air conditioning modules to alternately perform heating operation.
7. The floor heating unit according to any one of claims 1 to 4 and 6, wherein the air conditioning module comprises:
the fan current detection module is used for detecting the fan current of the first heat exchanger;
the fan rotating speed detection module is used for detecting the fan rotating speed of the first heat exchanger;
and the air conditioning module is used for determining whether to send a defrosting request according to the fan current and the fan rotating speed.
8. Floor heating unit according to claim 7, characterized in that the air conditioning module is configured to determine that a defrost request is issued when the fan current I > first set current I1 and the fan speed n < first set speed n1, or the fan current I > second set current I2, or the fan speed n < second set speed n2, wherein the second set current I2> first set current I1, and the first set speed n1> second set speed n 2.
9. The floor heating unit according to claim 8, wherein the fan rotation speed comprises a plurality of gears, and different gears have different first set currents I1, different second set currents I2, different first set rotation speeds n1 and different second set rotation speeds n 2.
10. The floor heating unit of claim 5, wherein the air conditioning module comprises:
the fan current detection module is used for detecting the fan current of the first heat exchanger;
the fan rotating speed detection module is used for detecting the fan rotating speed of the first heat exchanger;
and the air conditioning module is used for determining whether to send a defrosting request according to the fan current and the fan rotating speed.
11. The floor heating unit of claim 10, wherein the air conditioning module is configured to determine that a defrost request is requested when the fan current I > a first set current I1 and the fan speed n < a first set speed n1, or the fan current I > a second set current I2, or the fan speed n < a second set speed n2, wherein the second set current I2> the first set current I1, and the first set speed n1> the second set speed n 2.
12. The floor heating unit of claim 10, wherein the fan speeds comprise a plurality of gears, and the first set current I1, the second set current I2, the first set speed n1 and the second set speed n2 of different gears are different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110261859.8A CN112984595B (en) | 2021-03-10 | 2021-03-10 | Ground heating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110261859.8A CN112984595B (en) | 2021-03-10 | 2021-03-10 | Ground heating unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112984595A CN112984595A (en) | 2021-06-18 |
| CN112984595B true CN112984595B (en) | 2022-04-19 |
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