CN107228509B - Pipeline device, air conditioning system and heating and heat storage method thereof - Google Patents
Pipeline device, air conditioning system and heating and heat storage method thereof Download PDFInfo
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- CN107228509B CN107228509B CN201710500869.6A CN201710500869A CN107228509B CN 107228509 B CN107228509 B CN 107228509B CN 201710500869 A CN201710500869 A CN 201710500869A CN 107228509 B CN107228509 B CN 107228509B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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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
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/01—Heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/24—Storage receiver heat
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a pipeline device, an air conditioning system and a heating and heat storage method thereof, wherein the pipeline device comprises: the heat preservation box (1), wherein a heat preservation medium (2) is arranged in the heat preservation box (1); a fluid pipe for connection to an air conditioning line, the fluid pipe having a portion in contact with the insulation medium (2); heating means for heating the heat-insulating medium (2); and the tube temperature sensing component (7) is used for detecting the temperature of the fluid tube, and the tube temperature sensing component (7) is in communication connection with the heating device. The pipeline device provided by the invention can effectively heat the liquid refrigerant formed after the air conditioning system is stopped or is placed at low temperature for a long time, effectively ensures the stable operation of the air conditioning system in a heating state, and improves the heating effect and the heating efficiency of the air conditioning system.
Description
Technical Field
The invention relates to the technical field of refrigeration and heating equipment, in particular to a pipeline device, an air conditioning system and a heating and heat storage method thereof.
Background
With the increasing severity of air pollution in the north, the country continues to push a series of policies such as "changing coal to electricity" and the like, so as to push the technology to be updated with the policies. The air source heat pump multi-split air conditioner is one of technical heat supply equipment for well treating northern air pollution. However, because the temperature in winter in north is low, and in addition, some commercial places, such as office buildings, generally shut down the air conditioning system after going off duty until the next day is started again. After the air conditioning system is restarted, the air conditioning system has the phenomenon of no heating for a long time, and the reason for the phenomenon is as follows: the indoor unit and the air conditioner pipeline are in a low-temperature environment for a long time; the device is used for performing shutdown operation or power-off operation on the air conditioning system, and the air conditioning unit cannot continuously heat; after the air conditioning system is placed for a long time, the refrigerant in the air conditioning system is cooled to form a liquid refrigerant; after the outdoor unit is started in the next day, the liquid refrigerant needs to be heated, and the heating depends on the self heating of the compressor of the outdoor unit, so that the heating time is long, the frequency rising of the compressor is limited, and the compressor cannot be heated normally for a long time, so that the complaint of users is caused.
The air source heat pump heats by means of a compressor to generate high-temperature high-pressure gaseous refrigerant, and heat is transferred to the indoor through an indoor heat exchanger, but after the air source heat pump is placed at low temperature for a long time, a large amount of refrigerant is changed into liquid refrigerant, the liquid refrigerant is heated by the heat generated by the compressor, so that heating time is greatly consumed, and when the air source heat pump is at extremely low temperature, the low pressure of a system is too low due to low ambient temperature, the further frequency rising of the compressor is limited due to the protection function (liquid impact prevention) of the system, and the slow heating of the heating is further caused. Through the arrangement, the heating effect and the heating efficiency of the air conditioning system are affected.
Therefore, how to improve the heating effect and the heating efficiency is a problem to be solved by the person skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a pipeline device to improve the heating effect and heating efficiency. The invention also provides an air conditioning system with the pipeline device and a heating and heat storage method thereof.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a line set comprising:
the heat preservation box is internally provided with a heat preservation medium;
a fluid pipe for connection with an air conditioning line, the fluid pipe having a portion in contact with the insulation medium;
the heating device is used for heating the heat preservation medium;
and the tube temperature sensing component is used for detecting the temperature of the fluid tube, and is in communication connection with the heating device.
Preferably, in the above-mentioned pipe device, the fluid pipe includes a gas pipe for connection with an air-conditioning pipe and a liquid pipe for connection with an air-conditioning pipe.
Preferably, in the above pipe device, the pipe temperature sensing member is disposed on the gas pipe.
Preferably, in the above pipe device, the fluid pipe has a "U" shaped bending portion;
the U-shaped bending part is wrapped in the heat preservation medium.
Preferably, in the above pipe device, the heating device includes:
the solar cell panel is connected with the electric box of the heating device through wires;
and/or the electric heating device is connected with the electric box of the heating device through an electric wire.
Preferably, in the above pipeline device, the exposed part of the fluid pipe fitting is wrapped with insulation cotton of an insulation layer.
Preferably, in the above pipe device, the heat-insulating medium is paraffin.
The invention also provides an air conditioning system comprising the pipeline device as claimed in any one of the above.
Preferably, in the air conditioning system, the pipe device is located in a lowest area of the air conditioning system.
Preferably, in the air conditioning system, an indoor unit of the air conditioning system is higher than an outdoor unit of the air conditioning system, and the pipeline device is located at one side close to the outdoor unit;
the outdoor unit of the air conditioning system is higher than the indoor unit of the air conditioning system, and the pipeline device is positioned at one side close to the indoor unit.
Preferably, in the air conditioning system, the air conditioning system further comprises a control board dial, wherein the control board dial is used for controlling the pipeline device to switch between an independent control state and an online control state;
in the independent control state, the pipeline device is connected with an external independent power supply;
and in the on-line control state, the pipeline device and the heat pump unit of the air conditioning system share one power supply.
The embodiment of the invention also provides a heating and heat storage method of the air conditioning system, which is applied to the air conditioning system described in any one of the above, and comprises the following steps:
1) The detection temperature T of the pipe temperature sensing component 7 ；
2) The detection temperature T of the pipe temperature sensing component 7 Heating is started when the temperature of the temperature sensing bag is less than or equal to the preset temperature.
Preferably, in the heating and heat storage method of an air conditioning system, the step 1) further includes: detecting an outdoor ambient temperature T OUT ；
The step 2) is specifically that the outdoor environment temperature T OUT The detection temperature T of the pipe temperature sensing component is lower than the outer environment preset temperature 7 Heating is started when the temperature of the temperature sensing bag is less than or equal to the preset temperature.
Preferably, in the heating and heat storage method of an air conditioning system, in the step 2), the outdoor ambient temperature T OUT Heating is started when the temperature is lower than or equal to the preset temperature of the external environment and the air conditioning system downtime is greater than or equal to the preset downtime t.
Preferably, in the heating and heat storage method of an air conditioning system, in the step 2), the detected temperature T of the tube temperature sensing member 7 Heating is started when the temperature of the preset temperature sensing bag is less than or equal to the preset temperature sensing bag and the duration time is more than or equal to the preset duration time.
Preferably, in the heating and heat storage method of an air conditioning system, in the step 2), starting heating includes starting a heating device and the outdoor unit a of the air conditioning system is in a heating operation state;
or, in the step 2), the heating is started to turn on the heating device.
Preferably, in the heating and heat storage method of an air conditioning system, step 2 ') further includes a step 2') of detecting an indoor unit power requirement, where the indoor unit power requirement is a requirement that an indoor unit is turned on to heat.
Preferably, in the heating and heat storage method of an air conditioning system, in the step 2), a heating condition is set according to a result of the indoor unit power demand.
Preferably, in the heating and heat storage method of an air conditioning system, step 2) further includes step 3) of judging whether to stop heating according to indoor unit power requirements and heating effects.
Preferably, in the heating and heat storage method of an air conditioning system, in the step 2'), the indoor unit power requirement=0 is detected, and the indoor unit does not have a requirement of starting heating;
in the step 3), when the detected temperature T 7 ≥T OUT +T' or T 7 And stopping heating when the temperature is not less than a ℃ and the preset detection time is continued, and/or when the indoor power requirement is not less than 0, and/or when the operation time of the heating device is not less than the first preset heating time.
Preferably, in the heating and heat storage method of an air conditioning system, in the step 2'), if the indoor unit power requirement is detected to be greater than 0, the indoor unit is started to generate heat;
in the step 3), when the outdoor environment temperature T OUT Stopping heating when the temperature is higher than the allowable temperature of the external environment;
when the outdoor environment temperature T OUT When the temperature is higher than or equal to the preset temperature of the external environment and lower than or equal to the allowable temperature of the external environment, the last control is maintained, and the first control defaults to start heating;
when the outdoor environment temperature T OUT And when the operating time of the heating device is more than or equal to the second preset heating time, stopping heating.
According to the technical scheme, the pipeline device provided by the invention judges whether heating is needed according to the temperature of the fluid pipe fitting detected by the pipe temperature sensing component, and then the heating device heats the heat preservation medium in the heat preservation box, and the part, which is in contact with the heat preservation medium, of the fluid pipe fitting exchanges heat with the heat preservation medium, so that the heating effect of the fluid pipe fitting is achieved. Through the arrangement, the liquid refrigerant formed after the air conditioning system is stopped or powered off and placed at a low temperature for a long time can be effectively heated, so that the stable operation of the air conditioning system in a heating state is effectively ensured, and the heating effect and the heating efficiency of the air conditioning system are improved.
The invention also provides an air conditioning system with the pipeline device and a heating and heat storage method thereof. Because the above-mentioned pipeline device has the above-mentioned technical effects, the air conditioning system with the above-mentioned pipeline device and the heating and heat storage method of the air conditioning system should also have the same technical effects, and will not be described again here.
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 view of a pipeline apparatus according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a first structure of an air conditioning system according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a second structure of an air conditioning system according to an embodiment of the present invention.
Detailed Description
The invention discloses a pipeline device for improving heating effect and heating efficiency. The invention also provides an air conditioning system with the pipeline device and a heating and heat storage method thereof.
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.
Referring to fig. 1, an embodiment of the present invention provides a pipeline device, which includes an insulation box 1, an insulation medium 2, a fluid pipe, a heating device and a pipe temperature sensing component 7. Wherein, the heat preservation medium 2 is arranged in the heat preservation box 1; the fluid pipe fitting is a pipe fitting for connecting with an air conditioner pipeline, and the fluid pipe fitting is provided with a part contacted with the heat preservation medium 2; the heating device is used for heating the heat preservation medium 2; the pipe temperature sensing component 7 is used for detecting the temperature of the fluid pipe fitting, and the pipe temperature sensing component 7 is in communication connection with the heating device.
According to the pipeline device provided by the embodiment of the invention, whether heating is needed is judged according to the temperature of the fluid pipe fitting detected by the pipe temperature sensing component 7, the heating device is used for heating the heat preservation medium 2 in the heat preservation box 1, and the part, in contact with the heat preservation medium 2, of the fluid pipe fitting exchanges heat with the heat preservation medium 2, so that the effect of heating the fluid pipe fitting is achieved. Through the arrangement, the liquid refrigerant formed after the air conditioning system is stopped or powered off and placed at a low temperature for a long time can be effectively heated, the stable operation of the air conditioning system in a heating state is effectively ensured, and the heating effect and the heating efficiency are improved.
Preferably, the fluid pipe is a pipe on a connecting pipeline between the indoor unit B and the outdoor unit a of the air conditioning system.
Further, the fluid pipe includes a gas pipe 10 for connection with an air conditioning pipe and a liquid pipe 11 for connection with an air conditioning pipe. Wherein, the gas pipe fitting 10 is connected with the air conditioner pipeline, and the inner fluid is high-temperature gas when being heated; the liquid pipe fitting 1 is connected with an air conditioner pipeline, and the internal fluid is low-temperature gas after heat exchange during heating. Of course, it is also possible to provide only the gas pipe 10 or the liquid pipe 11 as a fluid pipe, which are not described in detail here and are all within the scope of protection.
Preferably, the tube temperature sensing member 7 is provided on the gas tube 10. Through the arrangement, the high-temperature gas temperature of the fluid during heating can be effectively detected, and further unnecessary waste of energy sources is avoided. Of course, the tube temperature sensing member 7 may be provided to the liquid tube 11.
In order to improve the heat exchange efficiency, the fluid pipe fitting is provided with a U-shaped bending part; the U-shaped bending part is wrapped in the heat preservation medium 2. Of course, it is also possible to provide straight tubes or "V" -shaped tubes, etc., which will not be described in detail here.
In the embodiment, the heating device comprises a solar panel 4 and an electric heating device 5, wherein the solar panel 4 is connected with an electric box 6 of the heating device through an electric wire 8; the electric heating device 5 is connected with an electric box 6 of the heating device through electric wires. With the above arrangement, the electrical box 6 of the heating device is preferably powered by the solar panel 4 during a period of sufficient sunlight (e.g., daytime), and the electrical heating device 5 is preferably powered during a period of insufficient sunlight (e.g., night).
Only the solar panel 4 or the electric heating device 5 may be provided.
Preferably, the exposed part of the fluid pipe is wrapped with the insulation layer 3. By arranging the heat preservation layer 3, the heat preservation effect on the fluid pipe fitting is further achieved. Wherein, the heat preservation layer 3 is processed by heat preservation cotton material.
In this embodiment, the heat-insulating medium 2 is preferably paraffin wax. Because the paraffin has better heat storage and heat conduction capacities, the heating effect of the pipeline device provided by the embodiment of the invention on the liquid refrigerant is effectively improved by setting the heat preservation medium 2 as the paraffin.
The embodiment of the invention also provides an air conditioning system which comprises any pipeline device. Since the above-mentioned pipe device has the above-mentioned technical effects, the air conditioning system having the above-mentioned pipe device should have the same technical effects, and will not be described in detail herein.
The air conditioning system can be an air source heat pump multi-split air conditioner or the like, and will not be described in detail here.
Because the weight of the liquid refrigerant is higher than that of the gaseous refrigerant, the pipeline device is positioned in the lowest area of the air conditioning system in order to ensure the heating effect.
As shown in fig. 2, the indoor unit B of the air conditioning system is higher than the outdoor unit a of the air conditioning system, and the pipe device is located at a side close to the outdoor unit a. The indoor units B are arranged on each floor of the building, and the outdoor unit A is arranged on the bottommost layer of the building, so that the pipeline device is positioned on one side close to the outdoor unit A. Preferably, the solar panel 4 of the pipeline device is located at the top of the building, and other components of the pipeline device are arranged in the bottommost layer and near the outdoor unit A.
As shown in fig. 3, the outdoor unit a of the air conditioning system is higher than the indoor unit B of the air conditioning system, and the pipe device is located at a side close to the indoor unit B.
In order to realize the heating and heat storage operation of the air conditioning system in the shutdown state and the power-off state, the air conditioning system provided by the embodiment of the invention further comprises a control board dial, wherein the control board dial is used for controlling the pipeline device to switch between an independent control state and an on-line control state; wherein, in the independent control state, the pipeline device is connected with an external independent power supply; in the on-line control state, the pipeline device and the heat pump unit of the air conditioning system share one power supply.
The embodiment of the invention also provides a heating and heat storage method of the air conditioning system, which is applied to any air conditioning system, and is characterized by comprising the following steps:
s1: detection temperature T of tube temperature sensing member 7 7 ；
The temperature of the fluid pipe fitting is detected through the pipe temperature sensing part 7, wherein the temperature of the fluid pipe fitting indirectly reflects the temperature of fluid in the fluid pipe fitting, and when the temperature of the fluid pipe fitting is smaller than or equal to a certain value, the fluid in the fluid pipe fitting is liquid. The pipe temperature sensing part 7 detects the temperature of the fluid pipe fitting to obtain a detection temperature T 7 。
S2: detection temperature T of tube temperature sensing member 7 7 The preset temperature sensing is not more thanPack temperature, start heating.
According to the heating and heat storage method of the air conditioning system, whether heating is needed or not is judged according to the temperature of the fluid pipe fitting detected by the pipe temperature sensing component 7, heating is started again, liquid refrigerant formed after the air conditioning system is stopped or is placed at low temperature for a long time can be effectively heated, stable operation of the air conditioning system in a heating state is effectively ensured, and heating effect and heating efficiency are improved.
Preferably, step S1 further includes: detecting an outdoor ambient temperature T OUT ；
Because the air conditioning system is stopped or in a power-off state and is placed at a low temperature for a long time, the refrigerant in the air conditioning pipeline of the air conditioning system can form a liquid refrigerant, and therefore, the outdoor environment temperature T is detected OUT The control precision can be effectively improved.
Step S2 is specifically that the outdoor ambient temperature T OUT The detected temperature T of the tube temperature sensing component 7 which is lower than the outer environment preset temperature 7 Heating is started when the temperature of the temperature sensing bag is less than or equal to the preset temperature.
Of course, the outdoor environment temperature T may not be detected OUT Only the tube temperature sensing member 7 is detected, and the detected temperature T is detected 7 And comparing with the preset temperature sensing bulb temperature.
Further, in step S2, the outdoor ambient temperature T OUT Heating is started below or equal to the preset temperature of the external environment and the air conditioning system downtime is greater than or equal to the preset downtime t. Through the arrangement, heating operation caused by short-term detection of low temperature or detection errors is effectively avoided, and control accuracy is further improved.
Further, in step S2, the detected temperature T of the tube temperature sensing member 7 7 Heating is started when the temperature of the preset temperature sensing bag is less than or equal to the preset temperature sensing bag and the duration time is more than or equal to the preset duration time. By the arrangement, heating operation caused by short-term detection of low temperature or detection errors is avoided, and control accuracy is further improved.
In the heating and heat storage method of the air conditioning system provided by the embodiment of the invention, in the step S2, the heating is started, namely the heating device is started, and the outdoor unit A of the air conditioning system is in a heating running state; it will be understood that when the outdoor unit a of the air conditioning system is in the heating operation state, the electronic expansion valve of the indoor unit B is fully opened, but the fan of the indoor unit B is not activated, i.e., the air conditioning system is not in the heating operation, but only the outdoor unit a is in the heating operation state, and only the refrigerant is heated.
Alternatively, in step S2, heating is started to turn on the heating device. By turning on only the heating means, the heating operation is completed.
Step S2 is preceded by a step S2' of detecting an indoor power requirement, which is a requirement that the indoor unit B is turned on for heating. The indoor unit power demand=0 is a state in which the indoor unit B is not turned on, that is, is not used to employ a heating operation, and in this state, the air conditioning system is in a shutdown or power-off state.
In this embodiment, in step S2, heating conditions are required to be set, where the heating conditions include a preset bulb temperature, an external environment preset temperature, a preset downtime t, a preset duration, etc., and heating is started after the heating conditions are satisfied. Therefore, in step S2, the heating condition is set according to the result of the indoor power demand. By the arrangement, the control precision is further improved.
Preferably, step S2 is followed by step S3 of judging whether to stop heating according to the indoor power demand and the heating effect. Likewise, by the above arrangement, the control accuracy can be further improved.
In the first embodiment, in step S2', the indoor unit power requirement=0 is detected, and the indoor unit B does not have the requirement of turning on heating. In this state, the heating condition may be set according to the indoor unit power demand. In the present embodiment, the preset temperature sensing bulb temperature is the outdoor ambient temperature T OUT The preset temperature of the external environment is-5 ℃; the predetermined downtime T depends on the outdoor ambient temperature T OUT And is set up in the following table; the predetermined duration is 30 minutes.
In the present embodiment, in the on-line control state, in step S2, the outdoor environment temperature T is used OUT The temperature is lower than minus 5 ℃ and the downtime is more than or equal to t min and the tube temperature is higher than or equal toThe temperature sensing bulb 7 detects the temperature T 7 ≤T OUT And when the temperature is 30min, the heating state is kept. In this embodiment, preferably, the air conditioning system is in a heating operation state, and the electronic expansion valve of the indoor unit is in a fully opened state, but the fan of the indoor unit remains in the original state.
TABLE 1 scheduled downtime T and outdoor ambient temperature T OUT Relative relation table of (a)
In step S3, when the temperature T is detected 7 ≥T OUT +T' or T 7 And stopping heating when the temperature is not less than a ℃ and the preset detection time is continued, and/or when the indoor power requirement is not less than 0, and/or when the operation time of the heating device is not less than the first preset heating time. It will be appreciated that a is a constant. In this embodiment, T' =20 ℃, a=0, the first predetermined heating time=60 min, and the predetermined detection time=10 min.
It will be appreciated that the above parameters may also be set to other values, which are not exemplified herein and are within the scope of protection.
Or in an independent state, in this embodiment, the preset temperature of the bulb is-15 ℃, and the preset duration is 30min, and at this time, the bulb is in a heating state.
In step S2, the outdoor environment temperature T OUT The temperature T is lower than-5 ℃ and the downtime is more than or equal to tmin, and the tube temperature-sensing bulb 7 detects the temperature T 7 ≤T OUT And when the temperature is 30min, the heating state is kept. In this embodiment, preferably, the air conditioning system is in a heating operation state, and the electronic expansion valve of the indoor unit is in a fully opened state, but the fan of the indoor unit remains in the original state.
In step S3, when the temperature T is detected 7 And stopping heating when the temperature is not less than a ℃ and the preset detection time is continued, and/or when the operation time of the heating device is not less than the first preset heating time. First predetermined heating time=120 min, a= -5, predetermined detection time=30 min.
In the second embodiment, in step S2', the indoor unit B is turned on to heat the indoor unit B when the indoor unit power requirement is detected to be > 0. In this state, the heating condition may be set according to the indoor unit power demand.
In this embodiment, the preset bulb temperature is 25 ℃, and the external environment preset temperature is-15 ℃; the predetermined duration is 30 minutes.
In step S2, the outdoor ambient temperature T OUT Temperature T of the tube temperature sensing bulb 7 at-15 DEG C 7 Heating is started at the temperature of less than or equal to 25 ℃ for 30min.
In step S3, when the outdoor ambient temperature T OUT Stopping heating when the temperature is higher than the allowable temperature of the external environment;
when the outdoor environment temperature T OUT When the temperature is higher than or equal to the preset temperature of the external environment and lower than or equal to the allowable temperature of the external environment, the last control is maintained, and the first control defaults to start heating; when the outdoor environment temperature T OUT And when the operating time of the heating device is more than or equal to the second preset heating time, stopping heating.
The preset temperature of the external environment is-15 ℃, the allowable temperature of the external environment is-10 ℃, and the second preset heating time is 30min.
By setting the preset temperature of the external environment and the allowable temperature of the external environment, the repeated stopping and starting operation of the air conditioning system is effectively avoided.
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 previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (19)
1. A line set, comprising:
the heat preservation box (1), wherein a heat preservation medium (2) is arranged in the heat preservation box (1);
a fluid pipe for connection to an air conditioning line, the fluid pipe having a portion in contact with the insulation medium (2);
heating means for heating the heat-insulating medium (2);
a tube temperature sensing component (7) for detecting the temperature of the fluid tube, wherein the tube temperature sensing component (7) is in communication connection with the heating device; the temperature T detected by the pipe temperature sensing component (7) 7 The temperature of the temperature sensing bag is less than or equal to the preset temperature, and the outdoor environment temperature T OUT The heating device starts heating when the temperature is lower than or equal to the preset temperature of the external environment and the downtime of the air conditioning system is greater than or equal to the preset downtime t.
2. A line set according to claim 1, characterized in that the fluid line comprises a gas line (10) for connection to an air conditioning line and a liquid line (11) for connection to an air conditioning line.
3. A line set according to claim 2, characterized in that the tube temperature sensing element (7) is arranged on the gas tube (10).
4. The line set of claim 1 wherein the fluid tubing has a "U" shaped bend;
the U-shaped bending part is wrapped in the heat preservation medium (2).
5. The line set of claim 1, wherein the heating means comprises:
the solar cell panel (4), the solar cell panel (4) is connected with the electrical box (6) of the heating device through an electric wire (8);
and/or an electric heating device (5), wherein the electric heating device (5) is connected with an electric box (6) of the heating device through an electric wire.
6. A line set according to claim 1, characterized in that the exposed part of the fluid pipe is wrapped with insulation (3) insulation wool.
7. A line set according to any one of claims 1-6, characterized in that the heat-insulating medium (2) is paraffin.
8. An air conditioning system comprising a line set according to any one of claims 1 to 7.
9. The air conditioning system of claim 8, wherein the line set is located in a lowermost region of the air conditioning system.
10. An air conditioning system according to claim 9, wherein an indoor unit (B) of the air conditioning system is higher than an outdoor unit (a) of the air conditioning system, and the pipe means is located at a side close to the outdoor unit a;
the outdoor unit (A) of the air conditioning system is higher than the indoor unit (B) of the air conditioning system, and the pipeline device is positioned at one side close to the indoor unit (B).
11. The air conditioning system according to any of claims 8-10, further comprising a control board dial for controlling the line set to switch between an independent control state and an on-line control state;
in the independent control state, the pipeline device is connected with an external independent power supply;
and in the on-line control state, the pipeline device and the heat pump unit of the air conditioning system share one power supply.
12. A method of storing heat for heating an air conditioning system, using an air conditioning system according to any one of claims 8 to 11, comprising the steps of:
1) The temperature T detected by the pipe temperature sensing component (7) 7 The method comprises the steps of carrying out a first treatment on the surface of the Detecting an outdoor ambient temperature T OUT The method comprises the steps of carrying out a first treatment on the surface of the 2) The temperature T detected by the pipe temperature sensing component (7) 7 The temperature of the temperature sensing bag is less than or equal to the preset temperature, and the outdoor environment temperature T OUT Heating is started when the temperature is lower than or equal to the preset temperature of the external environment and the air conditioning system downtime is greater than or equal to the preset downtime t.
13. The method for heating and storing heat of an air conditioning system according to claim 12, wherein in the step 2), the detected temperature T of the tube temperature sensing member (7) is set to 7 Heating is started when the temperature of the preset temperature sensing bag is less than or equal to the preset temperature sensing bag and the duration time is more than or equal to the preset duration time.
14. The method of heat storage for air conditioning system according to claim 12, wherein in the step 2), starting heating includes turning on a heating device and an outdoor unit (a) of the air conditioning system is in a heating operation state;
or, in the step 2), the heating is started to turn on the heating device.
15. The method for heating and storing heat of an air conditioning system according to claim 12, wherein step 2 ') is preceded by step 2') of detecting an indoor power demand, which is a demand for the indoor unit (B) to turn on heating.
16. The method of heating and storing heat for an air conditioning system according to claim 15, wherein in the step 2), heating conditions are set according to the result of the indoor power demand.
17. The method for heating and storing heat of an air conditioning system according to claim 15, wherein the step 2) further comprises a step 3) of judging whether to stop heating according to indoor power demand and heating effect.
18. The method of heating and storing heat for an air conditioning system according to claim 17, wherein in the step 2'), the indoor unit (B) does not have a need to turn on heating;
in the step 3), when the detected temperature T 7 ≥T OUT +T' or T 7 And stopping heating when the temperature is not less than a ℃ and the preset detection time is continued, and/or when the indoor power requirement is not less than 0, and/or when the operation time of the heating device is not less than the first preset heating time.
19. The method of heating and storing heat for an air conditioning system according to claim 17, wherein in step 2'), the indoor unit (B) is turned on to heat the air, if the indoor unit power demand is detected to be > 0;
in the step 3), when the outdoor environment temperature T OUT Stopping heating when the temperature is higher than the allowable temperature of the external environment;
when the outdoor environment temperature T OUT When the temperature is higher than or equal to the preset temperature of the external environment and lower than or equal to the allowable temperature of the external environment, the last control is maintained, and the first control defaults to start heating;
when the outdoor environment temperature T OUT And when the operating time of the heating device is more than or equal to the second preset heating time, stopping heating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710500869.6A CN107228509B (en) | 2017-06-27 | 2017-06-27 | Pipeline device, air conditioning system and heating and heat storage method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710500869.6A CN107228509B (en) | 2017-06-27 | 2017-06-27 | Pipeline device, air conditioning system and heating and heat storage method thereof |
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| CN107228509B true CN107228509B (en) | 2023-05-30 |
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|---|---|---|---|---|
| CN101592362A (en) * | 2008-05-26 | 2009-12-02 | 乐金电子(天津)电器有限公司 | Air-conditioner |
| CN106288487A (en) * | 2016-08-26 | 2017-01-04 | 芜湖美智空调设备有限公司 | One drags many air-conditionings and control method thereof |
| CN206269344U (en) * | 2016-10-31 | 2017-06-20 | 广东美的制冷设备有限公司 | Air conditioner heat exchange system and air-conditioning |
| CN206847135U (en) * | 2017-06-27 | 2018-01-05 | 珠海格力电器股份有限公司 | Air-conditioning system and its piping installation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101592362A (en) * | 2008-05-26 | 2009-12-02 | 乐金电子(天津)电器有限公司 | Air-conditioner |
| CN106288487A (en) * | 2016-08-26 | 2017-01-04 | 芜湖美智空调设备有限公司 | One drags many air-conditionings and control method thereof |
| CN206269344U (en) * | 2016-10-31 | 2017-06-20 | 广东美的制冷设备有限公司 | Air conditioner heat exchange system and air-conditioning |
| CN206847135U (en) * | 2017-06-27 | 2018-01-05 | 珠海格力电器股份有限公司 | Air-conditioning system and its piping installation |
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