CN111981733A - Heat source tower system - Google Patents
Heat source tower system Download PDFInfo
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- CN111981733A CN111981733A CN201910425055.XA CN201910425055A CN111981733A CN 111981733 A CN111981733 A CN 111981733A CN 201910425055 A CN201910425055 A CN 201910425055A CN 111981733 A CN111981733 A CN 111981733A
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- heat source
- source tower
- heat
- refrigerant
- defrosting
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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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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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
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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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
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioners, and particularly provides a heat source tower system, aiming at solving the problem that the existing heat source tower system is low in defrosting efficiency. For the purpose, the heat source tower system comprises a heat exchange loop and a defrosting loop, wherein the heat exchange loop comprises a heat source tower, and the heat source tower is circularly connected with an external heat exchange mechanism; the defrosting circuit comprises a buffering mechanism, a water pump, a heating mechanism and a heat source tower which are sequentially connected end to end, when the heat source tower system is in a defrosting mode, the water pump enables a first refrigerant in the defrosting circuit to circularly flow, the buffering mechanism buffers the pressure of the first refrigerant, and the heating mechanism heats the first refrigerant, so that the heat source tower is defrosted in a heating mode. According to the invention, the first refrigerant circularly flowing in the defrosting circuit is heated by the heating mechanism, so that the heating efficiency of the first refrigerant in the defrosting circuit is improved, and the defrosting efficiency of the heat source tower is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, and particularly provides a heat source tower system.
Background
The heat source tower is used as a heat exchange device, and the working principle is as follows: absorbing heat in low-temperature air in winter, thereby providing a low-temperature heat source for the heat pump main machine; in summer, the heat is released to the air by the evaporation and the heat dissipation of water, so that the refrigeration is realized. In the heating mode, the heat source tower directly collects outdoor low-grade heat, and utilizes a carrier medium (antifreeze) with the freezing point lower than 0 ℃ to extract energy from low-temperature air with higher relative humidity for supplying heat, so that a stable heat source is provided for a heat pump air-conditioning system. However, the frosting phenomenon also occurs in the operation process of the heat source tower, and the frosting of the heat source tower can cause the performance reduction of the refrigeration system, thereby affecting the heating effect of the heat pump air conditioning system, reducing the comfort of the indoor environment and affecting the user experience. Therefore, in the situation that the heat pump air conditioning system is in a heating working condition, timely and effective defrosting of the heat source tower is needed.
In order to solve the above problems, in the prior art, a heat source tower includes a heating mechanism, a communication pipe and a heat exchanger, the heating mechanism is communicated with the heat exchanger through the communication pipe, and when the heat exchanger has a frosting phenomenon, a refrigerant in the heat exchanger is heated by the heating mechanism, and the frosting on a heat exchange wall is removed in a heating manner. However, the heating mechanism is communicated with the heat exchanger in a one-way mode through the communicating pipe, so that the refrigerant in the heat exchanger is heated unevenly, the refrigerant in the heat exchanger cannot be heated to a preset temperature threshold value in a short time, frost on the heat exchanger cannot be removed in the short time, defrosting efficiency is reduced, and user experience is influenced.
Therefore, there is a need in the art for a new heat source tower system that addresses the above-mentioned problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem of low defrosting efficiency of the existing heat source tower system, the invention provides a heat source tower system, which comprises a heat exchange loop and a defrosting loop; the heat exchange loop comprises a heat source tower, and the heat source tower is circularly connected with an external heat exchange mechanism; the defrosting loop comprises a buffer mechanism, a conveying mechanism, a heating mechanism and a heat source tower which are sequentially connected end to end, wherein the conveying mechanism, the buffer mechanism and the heating mechanism are arranged as follows: when the heat source tower system is in a defrosting mode, the conveying mechanism enables a first refrigerant in the defrosting loop to circularly flow, the buffer mechanism buffers the pressure of the first refrigerant, and the heating mechanism heats the first refrigerant, so that the heat source tower is defrosted in a heating mode.
In a preferred technical solution of the heat source tower system, the heating mechanism includes a heat exchanger, and the heat exchanger is connected between an outlet end of the conveying mechanism and an inlet end of the heat source tower, and is configured to perform heat exchange between a first refrigerant in the defrosting circuit and a second refrigerant in the heat exchanger.
In a preferred embodiment of the above heat source tower system, the heat exchanger includes: a housing, the interior of which forms a heat exchange chamber; the first heat exchange pipeline is arranged in the heat exchange cavity, and the outlet end of the conveying mechanism is connected with the inlet end of the heat source tower through the first heat exchange pipeline; and the second heat exchange pipeline is arranged in the heat exchange cavity and is circularly connected with an external heat source.
In the preferred technical scheme of the heat source tower system, the heat exchanger further comprises a first electric valve and a first target flow switch, the first electric valve is connected between the outlet end of the external heat source and the inlet end of the second heat exchange pipeline, the first target flow switch is connected between the outlet end of the second heat exchange pipeline and the inlet end of the external heat source, and the first target flow switch is used for detecting whether the heat exchanger can normally operate.
In the preferable technical scheme of the heat source tower system, the heating mechanism further comprises a heater, and the heater is connected between the outlet end of the first heat exchange pipeline and the inlet end of the heat source tower and used for heating the first refrigerant.
In a preferred embodiment of the heat source tower system, the buffer mechanism includes a buffer tank, and the buffer tank is connected between the inlet end of the conveying mechanism and the outlet end of the heat source tower, and is configured to buffer the pressure of the first refrigerant.
In the preferable technical scheme of the heat source tower system, the buffer mechanism further comprises a bypass pipeline, and the bypass pipeline is connected with the buffer tank in parallel.
In a preferred embodiment of the heat source tower system, the buffer tank is further provided with a second electric valve for selectively opening or closing the buffer tank according to the pressure of the first refrigerant.
In the preferred technical scheme of the heat source tower system, the defrosting circuit further comprises a second target flow switch, and the second target flow switch is connected between the inlet end of the buffer mechanism and the outlet end of the heat source tower and is used for detecting whether the defrosting circuit can normally operate or not; and/or the heat source tower comprises a shell, a heat exchanger arranged in the shell and a fan, wherein the fan is used for providing heat exchange airflow for the heat exchanger.
In a preferred embodiment of the heat source tower system, the heat source tower further includes a detection member disposed on the casing, and the detection member is configured to detect whether the heat exchanger is frosted.
As can be understood by those skilled in the art, in the preferred embodiment of the heat source tower system of the present invention, the heat source tower system includes a heat exchange circuit and a defrosting circuit, wherein the defrosting circuit includes a buffering mechanism, a conveying mechanism, a heating mechanism and a heat source tower which are connected end to end in sequence. Compared with the prior art that the heating mechanism is communicated with the heat exchanger through the communicating pipe, when the heat source tower system is in the defrosting mode, the conveying mechanism can enable the first refrigerant in the defrosting loop to circularly flow, the heating mechanism can heat the first refrigerant in the defrosting loop, the heating efficiency of the first refrigerant in the defrosting loop is improved, the first refrigerant in the defrosting loop can be completely heated to the preset temperature threshold value in a short time, therefore, frost on the heat source tower can be removed in a short time, the defrosting efficiency of the heat source tower is improved, and further, the user experience is improved. Meanwhile, the buffer mechanism can buffer the pressure of the first refrigerant in the defrosting circuit, so that the pressure of the first refrigerant in the defrosting circuit is stabilized within a preset pressure threshold range, the over-high pressure of the first refrigerant in the defrosting circuit is avoided, the communication pipe is prevented from being burst due to the over-high pressure of the first refrigerant, safety accidents are avoided, and the safety performance of the heat source tower system is improved.
The buffering mechanism comprises a buffering groove and a bypass pipeline, the buffering groove is connected between the inlet end of the conveying mechanism and the outlet end of the heat source tower and used for buffering a first refrigerant to stabilize the pressure of the first refrigerant, the buffering groove is also provided with a second electric valve, the electric valve is used for selectively opening or closing the buffering groove according to the pressure of the first refrigerant, the bypass pipeline is connected with the buffering groove in a parallel connection mode, when the pressure of the first refrigerant is larger than or equal to a preset pressure threshold value, the situation that the pressure of the first refrigerant in the defrosting loop is too high and potential safety hazards exist is solved, and the second electric valve is opened to enable the first refrigerant flowing out of the heat source tower to flow into the buffering groove to be buffered so as to reduce the pressure of the first refrigerant; when the pressure of the first refrigerant is smaller than the preset pressure threshold value, the pressure of the first refrigerant in the defrosting loop is lower, no potential safety hazard exists, the pressure of the first refrigerant does not need to be buffered, and the second electric valve is closed, so that the first refrigerant flowing out of the heat source tower flows to the conveying mechanism through the bypass pipeline.
Further, the heating mechanism comprises a heat exchanger and an electric heater, when the heat source tower system is in a defrosting mode, the heat exchanger is used for enabling a first refrigerant in the defrosting loop to exchange heat with a second refrigerant in the heat exchanger, the electric heater is used for heating the first refrigerant, the heating efficiency of the first refrigerant in the defrosting loop is further improved under the combined action of the heat exchanger and the heater, the first refrigerant in the defrosting loop can be completely heated to a preset temperature threshold value in a short time, therefore, frost on the heat source tower can be removed in a short time, and the defrosting efficiency of the heat source tower is improved. Of course, the heat exchanger may be selected to heat the first refrigerant in the defrosting circuit, or the electric heater may be selected to heat the first refrigerant in the defrosting circuit, so that the user may flexibly select the heating mode, and thus the user experience is improved.
Drawings
FIG. 1 is a schematic diagram of the construction of a heat source tower system of the present invention;
FIG. 2 is a flow chart of the defrost control method of the present invention;
fig. 3 is a flow chart of a defrost control method in an embodiment of the present invention.
11, a heat source tower; 12. a fourth electrically operated valve; 13. a sixth control valve; 14. a seventh control valve; 21. a buffer mechanism; 211. a buffer tank; 212. a bypass line; 213. a second electrically operated valve; 214. a first control valve; 215. a second control valve; 216. a third control valve; 22. a water pump; 23. a heating mechanism; 231. a heat exchanger; 2311. a housing; 2312. a first heat exchange line; 2313. a second heat exchange line; 2314. a first electrically operated valve; 2315. a first target current switch; 232. an electric heater; 24. a second target current switch; 25. a third electrically operated valve; 26. a fourth control valve; 27. a fifth control valve.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
It is to be understood that in describing the present invention, terms of direction or positional relationship indicated by the terms "in" and the like are based on the directions or positional relationships shown in the drawings, which are for convenience of description only, and do not indicate or imply that the apparatus or component must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Based on the technical problems proposed in the background art, the invention provides a heat source tower system, which aims to heat a first refrigerant in a defrosting circuit through a heating mechanism, improve the heating efficiency of the first refrigerant in the defrosting circuit, and heat the first refrigerant in the defrosting circuit to a preset temperature threshold value in a short time, so that frost on the heat source tower can be removed in a short time, the defrosting efficiency of the heat source tower is improved, and further the user experience is improved.
Referring to fig. 1-3, fig. 1 is a schematic diagram of a heat source tower system of the present invention; FIG. 2 is a flow chart of the defrost control method of the present invention; fig. 3 is a flow chart of a defrost control method in an embodiment of the present invention. As shown in fig. 1, the heat source tower system comprises a heat exchange loop and a defrosting loop, the heat exchange loop comprises a heat source tower 11, and the heat source tower 11 is circularly connected with an external heat exchange mechanism; the defrosting circuit comprises a buffering mechanism 21, a water pump 22, a heating mechanism 23 and a heat source tower 11 which are sequentially connected end to end, when the heat source tower 11 system is in a defrosting mode, the water pump 22 enables a first refrigerant in the defrosting circuit to circularly flow, the buffering mechanism 21 buffers the pressure of the first refrigerant, and the heating mechanism 23 heats the first refrigerant, so that the heat source tower 11 is defrosted in a heating mode. It will be appreciated by those skilled in the art that the water pump 22 is not limited to the water pump 22 described above, and may be a circulation pump, a centrifugal pump, or the like, and any type of water pump 22 may be used as long as the first refrigerant in the defrost circuit can be circulated.
In a preferred embodiment, as shown in fig. 1, the heating mechanism 23 includes a heat exchanger 231 and an electric heater 232, the heat exchanger 231 and the electric heater 232 are connected in series between an outlet end of the water pump 22 and an inlet end of the heat source tower 11, when the heat source tower 11 system is in the defrosting mode, the heat exchanger 231 is used for performing heat exchange between a first refrigerant in the defrosting circuit and a second refrigerant in the heat exchanger 231, and the electric heater 232 is used for heating the first refrigerant, so that the heating efficiency of the first refrigerant in the defrosting circuit is further improved under the combined action of the heat exchanger 231 and the heater, and the first refrigerant in the defrosting circuit can be completely heated to the preset temperature threshold in a short time, so that frost on the heat source tower 11 can be removed in a short time, and the defrosting efficiency of the heat source tower 11 is improved. Of course, the heater is not limited to the electric heater 232 described above, and may be a photovoltaic heater, a gas-fuel heater, or the like, and any heater may be used as long as it can heat the first refrigerant circulating in the defrosting circuit.
In the actual use process, the heat exchanger 231 and the electric heater 232 can be used simultaneously or separately, for example, only the heat exchanger 231 is started, the electric heater 232 is not started, and the refrigerant in the defrosting circuit is heated by the heat exchanger 231; or only the electric heater 232 is started, the heat exchanger 231 is not started, and the first refrigerant in the defrosting loop is heated by the electric heater 232, so that a user can flexibly select a heating mode, and the user experience is improved. Furthermore, it will be appreciated by those skilled in the art that the heating mechanism 23 may comprise only the heat exchanger 231 or the electric heater 232, and the heating of the refrigerant in the defrost circuit by the heat exchanger 231 or the heating of the first refrigerant in the defrost circuit by the electric heater 232 may be implemented without departing from the principles of the present invention.
Preferably, the heat exchanger 231 includes a housing 2311, a first heat exchange pipeline 2312 and a second heat exchange pipeline 2313, wherein a heat exchange chamber is formed inside the housing 2311, the first heat exchange pipeline 2312 is arranged in the heat exchange chamber, the outlet end of the conveying mechanism is connected with the inlet end of the heat source tower 11 through the first heat exchange pipeline 2312, the second heat exchange pipeline 2313 is arranged in the heat exchange chamber, and the second heat exchange pipeline 2313 is circularly connected with an external heat source. When the heat source tower 11 system is in the defrosting mode, when the heat exchanger 231 is used for heating the first refrigerant in the defrosting loop, the first refrigerant flowing out of the water pump 22 in the defrosting loop is conveyed into the heat exchange cavity through the first heat exchange pipeline 2312, and the second refrigerant flowing out of the external heat source is conveyed into the heat exchange cavity through the second heat exchange pipeline 2313, so that the first refrigerant and the second refrigerant exchange heat in the heat exchange cavity in a heat convection and heat conduction mode through the first heat exchange pipeline 2312 and the second heat exchange pipeline 2313, the heating efficiency of the first refrigerant is improved, the defrosting efficiency of the heat source tower 11 is improved, and the use experience of a user is improved.
In order to further improve the heat exchange efficiency, the first heat exchange pipeline 2312 is a coiled pipe, the second heat exchange pipeline 2313 is a coiled pipe, and the length of the first heat exchange pipeline 2312 and the length of the second heat exchange pipeline 2313 are prolonged by adopting a coiled pipe structure, so that the heat exchange area of the heat exchanger 231 is increased, the residence time of the first refrigerant in the heat exchange cavity and the residence time of the second refrigerant in the heat exchange cavity are prolonged, the heat exchange efficiency of the first refrigerant and the second refrigerant is improved, and the defrosting efficiency of the heat source tower 11 system is further improved. Of course, it can be understood by those skilled in the art that only the first heat exchange pipeline 2312 or the second heat exchange pipeline 2313 may be set as a serpentine pipe, and the first heat exchange pipeline 2312 or the second heat exchange pipeline 2313 may increase the heat exchange area of the heat exchanger 231, so as to improve the heat exchange efficiency of the first refrigerant and the second refrigerant, and such a change does not depart from the principle of the present invention.
Preferably, the flow direction of the first refrigerant in the first heat exchange pipeline 2312 is opposite to the flow direction of the second refrigerant in the second heat exchange pipeline 2313, so that the first refrigerant and the second refrigerant exchange heat in a counter-flow mode through the first heat exchange pipeline 2312 and the second heat exchange pipeline 2313, and the heat exchange efficiency of the first refrigerant and the second refrigerant is further improved by adopting the counter-flow mode. Of course, the flow direction of the first refrigerant in the first heat exchange pipeline 2312 may be the same as the flow direction of the second refrigerant in the second heat exchange pipeline 2313, so that the first refrigerant and the second refrigerant exchange heat in a parallel flow manner through the first heat exchange pipeline 2312 and the second heat exchange pipeline 2313.
In addition, it should be further explained that the structures of the first heat exchange pipeline 2312 and the second heat exchange pipeline 2313 are not limited to the serpentine structures listed above, and the first heat exchange pipeline 2312 and the second heat exchange pipeline 2313 may also be spiral structures or zigzag structures, and no matter what structural design the first heat exchange pipeline 2312 and the second heat exchange pipeline 2313 are designed, as long as the requirement of increasing the heat exchange area of the heat exchanger 231 to improve the heat exchange efficiency can be met.
In order to selectively turn on the heat exchanger 231, as shown in fig. 1, the heat exchanger 231 further includes a first electric valve 2314 and a first target flow switch 2315, the first electric valve 2314 is connected between an outlet end of the external heat source and an inlet end of the second heat exchange pipeline 2313, the first target flow switch 2315 is connected between an outlet end of the second heat exchange pipeline 2313 and an inlet end of the external heat source, and the first target flow switch 2315 is used for detecting whether the heat exchanger 231 can normally operate.
When the heat source tower 11 system is in a defrosting mode, and a first refrigerant in a defrosting loop needs to be heated by the heat exchanger 231, the first electric valve 2314 is opened, so that the heat exchanger 231 and an external heat source are in circulating communication, whether the first target flow switch 2315 is opened or not is judged, and if the first target flow switch 2315 is opened, it is judged that second condensation can normally flow between the heat exchanger 231 and the external heat source, the heat exchanger 231 can normally operate; if the first target flow switch 2315 is closed, indicating that the second condensation is cut off between the heat exchanger 231 and the external heat source, it is determined that the heat exchanger 231 cannot operate normally; when it is determined that the heat exchanger 231 can operate normally, the heat exchanger 231 may be used to heat the first refrigerant in the defrost circuit. When the heat source tower 11 system is in the defrosting mode, and the heat exchanger 231 is not needed to heat the first refrigerant in the defrosting circuit, the first electric valve 2314 is closed, so that the heat exchanger 231 is not communicated with the external heat source, the heat exchanger 231 is closed, and the first refrigerant in the defrosting circuit cannot exchange heat with the second refrigerant in the heat exchanger 231. Of course, it will be appreciated by those skilled in the art that the heat exchanger 231 may also include only the first electrically operated valve 2314, and that the communication between the heat exchanger 231 and the external heat source can be achieved by opening or closing the first electrically operated valve 2314 without departing from the principles of the present invention.
It is further noted that the target switch is used to detect unidirectional or bidirectional air, oil and water flow, and when fluid is rushed towards the blade, the blade swings, changing the relative position of the magnet and the reed contactor, activating the contactor to close or open, and once the fluid is interrupted, the blade returns to the initial position, again activating the reed contactor, the mutual repulsion of the two magnets providing the force required to reset the flow switch, and the contactor returns to the previous state.
Preferably, the external heat source may be a hot water source, a steam source, or the like.
Preferably, the second refrigerant in the heat exchanger 231 is water or steam.
Preferably, the first refrigerant in the defrosting circuit is a secondary refrigerant, such as an aqueous solution of sodium chloride or calcium chloride, or an organic solution of ethylene glycol, glycerol, or the like.
In a preferred embodiment, as shown in fig. 1, the buffer mechanism 21 includes a buffer tank 211 and a bypass line 212, the buffer tank 211 is connected between an inlet end of the water pump 22 and an outlet end of the heat source tower 11 for buffering the pressure of the first refrigerant, the buffer tank 211 is further provided with a second electric valve 213, the second electric valve 213 is used for selectively opening or closing the buffer tank 211 according to the pressure of the first refrigerant, and the bypass line 212 and the buffer tank 211 are connected in parallel. When the pressure of the first refrigerant in the defrosting circuit is greater than or equal to the preset pressure threshold, it is indicated that the pressure of the first refrigerant in the defrosting circuit is too high, and a potential safety hazard exists, the second electric valve 213 is opened, so that the first refrigerant flowing out of the heat source tower 11 flows into the buffer tank 211 for buffering and then flows into the water pump 22; when the pressure of the first refrigerant in the defrosting circuit is smaller than the preset pressure threshold, it is indicated that the pressure of the first refrigerant in the defrosting circuit is low, there is no potential safety hazard, and the pressure of the first refrigerant does not need to be buffered, and then the second electric valve 213 is closed, so that the first refrigerant flowing out of the heat source tower 11 directly flows to the water pump 22 through the bypass pipeline 212.
Preferably, the second electric valve 213 may be an opening and closing type electric valve or a regulating type electric valve, and further, the second electric valve 213 is a pressure regulating valve.
Preferably, the bypass line 212 is provided with a first control valve 214, the outlet end of the buffer tank 211 is provided with a second control valve 215, the inlet end of the buffer tank 211 is provided with a third control valve 216, and the first control valve 214, the second control valve 215 and the third control valve 216 are in a long open state to facilitate maintenance and replacement of the bypass line 212, the buffer tank 211 and the second electric valve 213.
Preferably, the first control valve 214, the second control valve 215 and the third control valve 216 are manual regulating valves so as to manually switch the flow direction of the first refrigerant flowing out of the heat source tower 11.
In the above structure, a conclusion is given whether to buffer the pressure of the first refrigerant in the defrosting circuit or not by setting the preset pressure threshold. The preset pressure threshold value can be the highest pressure of the defrosting circuit without potential safety hazards. Of course, the preset pressure threshold is not limited to the above exemplary pressure, and may be other pressures, for example, a pressure obtained through an experiment by a person skilled in the art under a specific working condition, or an empirical pressure obtained through an experiment, as long as a requirement that a dividing point determined by the preset pressure threshold can be met to determine whether to buffer the pressure of the first refrigerant in the defrosting circuit is met.
Of course, the structure of the buffer mechanism 21 is not limited to the above-mentioned structure, and the buffer mechanism 21 may also include a buffer tank 211, and the buffer tank 211 is connected between the inlet end of the water pump 22 and the outlet end of the heat source tower 11, and the first refrigerant flowing out of the heat source tower 11 flows into the buffer tank 211 for buffering regardless of whether the pressure of the first refrigerant in the defrosting circuit is greater than or equal to the preset pressure threshold, so as to ensure that the pressure of the first refrigerant in the circulation circuit is always less than the preset pressure threshold, and improve the safety performance of the heat source tower 11 system.
In addition, the buffer mechanism 21 may also include a buffer tank 211 and a bypass line 212, the buffer tank 211 is connected between an inlet end of the water pump 22 and an outlet end of the heat source tower 11, the bypass line 212 and the buffer tank 211 are connected in parallel, no matter whether the pressure of the first refrigerant in the defrosting circuit is greater than or equal to a preset pressure threshold, a part of the first refrigerant flowing out of the heat source tower 11 flows into the buffer tank 211 for buffering and then flows into the water pump 22, and another part of the first refrigerant flowing out of the heat source tower 11 directly flows into the water pump 22 through the bypass line 212, so that the pressure of the first refrigerant in the circulation circuit is always smaller than the preset pressure threshold, and the safety performance of the heat source tower 11 system is improved.
In a preferred embodiment, as shown in fig. 1, the defrosting circuit further includes a second target flow switch 24, and the second target flow switch 24 is connected between the inlet end of the buffer mechanism 21 and the outlet end of the heat source tower 11 for detecting whether the defrosting circuit can operate normally.
When the heat source tower 11 needs defrosting, the water pump 22 is turned on, the first refrigerant in the defrosting circuit can flow circularly under the action of the water pump 22, whether the second target flow switch 24 is turned on or not is judged at this time, and if the second target flow switch 24 is turned on, the first refrigerant in the defrosting circuit can flow normally, the defrosting circuit can be judged to run normally; if the second target flow switch 24 is closed, which indicates that the first refrigerant in the defrosting circuit cannot flow normally, it is determined that the defrosting circuit cannot operate normally; when it is determined that the defrosting circuit can operate normally, the heat source tower 11 can be defrosted.
In a preferred embodiment, the heat source tower 11 includes a housing, a heat exchanger (not shown) disposed within the housing, and a blower (not shown) capable of drawing air into the housing from an air inlet of the housing, the air drawn into the housing exchanging heat with the heat exchanger to provide heat exchanged air to the heat exchanger. Of course, the gas flow is not limited to the above-mentioned air, but may be other gas flows such as nitrogen gas, carbon dioxide gas, etc., and those skilled in the art can flexibly adjust and set the type of the gas flow in practical applications.
Preferably, the heat exchanger is a fin type heat exchanger 231, and the heat exchanger may also be a shell-and-tube type heat exchanger 231, a plate type heat exchanger 231, a shower type heat exchanger 231, or other heat exchangers 231.
Preferably, the heat source tower 11 further includes a detection member provided on the casing for detecting whether the heat exchanger is frosted.
Further, the detection member comprises a wind pressure switch, when the wind pressure switch is turned on, the frosting thickness is thicker, and the heat exchanger needs to be defrosted; when the wind pressure switch is closed, the frosting of the heat exchanger is not generated or the frosting thickness is thin, and the defrosting of the heat exchanger is not needed.
Further, the detection component comprises a first temperature sensor, the first temperature sensor is used for detecting the inlet temperature and the outlet temperature of the heat exchanger, and when the difference value of the inlet temperature and the outlet temperature is smaller than a first preset temperature difference threshold value, the frosting of the heat exchanger is indicated, the frosting thickness is thicker, and the heat exchanger needs to be defrosted; when the difference value between the inlet temperature and the outlet temperature is larger than or equal to the first preset temperature difference threshold value, the fact that the heat exchanger is not frosted or the frosting thickness is thin is indicated, and defrosting of the heat exchanger is not needed.
Further, the detection component comprises a second temperature sensor, the second temperature sensor is used for detecting the outlet temperature and the ambient temperature of the heat exchanger, and when the difference value between the outlet temperature and the ambient temperature is greater than a second preset temperature difference threshold value, the frosting of the heat exchanger is indicated, the frosting thickness is thicker, and the heat exchanger needs to be defrosted; when the difference value between the outlet temperature and the ambient temperature is smaller than or equal to a second preset temperature difference threshold value, the fact that the heat exchanger is not frosted or the frosting thickness is thin is indicated, and defrosting of the heat exchanger is not needed.
In the structure, the conclusion whether the heat exchanger needs defrosting is given through setting the first preset temperature difference threshold value and the second preset temperature difference threshold value. The first preset temperature difference threshold value is the maximum temperature difference for judging whether defrosting is needed according to the temperature difference change of the inlet temperature and the outlet temperature of the heat exchanger, and the second preset temperature difference threshold value is the minimum temperature difference for judging whether defrosting is needed according to the temperature difference change of the outlet temperature and the environment temperature of the heat exchanger. Of course, the first preset temperature difference threshold and the second preset temperature difference threshold are not limited to the temperature difference exemplified above, and may be other temperature differences, for example, temperature differences obtained by a person skilled in the art according to experiments under a specific working condition, or empirical temperature differences obtained according to experiments, and the person skilled in the art may flexibly adjust and set the temperature differences.
Preferably, the number of the heat source towers 11 may be one or more, and those skilled in the art can flexibly adjust and set the number of the heat source towers 11. When the number of the heat source towers 11 is plural (for example, 3), the plural heat source towers 11 are connected in parallel, and all or at least a part of the heat source towers 11 may be defrosted at the same time, or all the heat source towers 11 may be defrosted in sequence, and a person skilled in the art may flexibly adjust and set the defrosting order of the heat source towers 11.
In a preferred embodiment, as shown in fig. 1, the defrosting circuit further comprises a third electric valve 25, a fourth control valve 26 and a fifth control valve 27, wherein the third electric valve 25 and the fourth control valve 26 are connected in series between the outlet end of the electric heater 232 and the inlet end of the heat source tower 11, and the fifth control valve 27 is connected between the second target flow switch 24 and the outlet end of the heat source tower 11.
Preferably, the heat exchange loop further comprises a fourth electrically operated valve 12, a sixth control valve 13 and a seventh control valve 14, the fourth electrically operated valve 12 and the sixth control valve 13 are connected in series between the outlet end of the external heat exchange mechanism and the inlet end of the heat source tower 11, and the seventh control valve 14 is connected between the inlet end of the external heat exchange mechanism and the outlet end of the heat source tower 11.
When the heat source tower 11 system is in the defrosting mode, the fourth electric valve 12, the sixth control valve 13 and the seventh control valve 14 are closed, so that the heat source tower 11 is not communicated with the external heat exchange mechanism, thereby closing the heat exchange circuit, and opening the third electric valve 25, the fourth control valve 26 and the fifth control valve 27, the heat source tower 11, the buffer mechanism 21, the water pump 22, the heat exchanger 231, and the electric heater 232 are made to communicate in circulation, thereby opening the defrost circuit, and the water pump 22 is turned on, the first refrigerant in the defrosting circuit is circulated and flows by the water pump 22, at this time, the heat exchanger 231 and/or the electric heater 232 can heat the first refrigerant circulated and flows in the defrosting circuit, the first refrigerant in the defrosting circuit can be heated to the preset temperature threshold in a short time, thereby, the frost on the heat source tower 11 can be removed in a short time, and the defrosting efficiency of the heat source tower 11 is improved.
When the heat source tower 11 system is in the heating mode, the third electric valve 25, the fourth control valve 26 and the fifth control valve 27 are closed, so that the heat source tower 11, the buffer mechanism 21, the water pump 22, the heat exchanger 231 and the electric heater 232 are not communicated, the defrosting loop is closed, the water pump 22 is closed, the first refrigerant in the defrosting loop does not flow, the fourth electric valve 12, the sixth control valve 13 and the seventh control valve 14 are opened, the heat source tower 11 is communicated with the external heat exchange mechanism, and the heat exchange loop is opened.
It should be further noted that the defrost circuit may comprise only at least one of the third electrically operated valve 25, the fourth control valve 26 and the fifth control valve 27, the heat exchange circuit may comprise only at least one of the fourth electrically operated valve 12, the sixth control valve 13 and the seventh control valve 14, the communication of the defrost circuit can be achieved by opening or closing at least one of the third electrically operated valve 25, the fourth control valve 26 and the fifth control valve 27, and the communication of the heat exchange circuit can be achieved by opening or closing at least one of the fourth electrically operated valve 12, the sixth control valve 13 and the seventh control valve 14, without departing from the principles of the present invention.
Preferably, the fourth control valve 26, the fifth control valve 27, the sixth control valve 13, and the seventh control valve 14 are manual regulating valves to facilitate maintenance and replacement of the heat source tower 11.
Preferably, the third motor-operated valve 25 and the fourth motor-operated valve 12 may be water passage motor-operated valves, or may be other motor-operated valves such as gas passage motor-operated valves and oil passage motor-operated valves.
Preferably, the external heat exchange mechanism comprises an indoor heat exchanger and an outdoor heat exchanger.
Preferably, the third refrigerant in the heat exchange circuit is a refrigerant, such as freon, saturated hydrocarbon, unsaturated hydrocarbon, and the like.
In addition, the invention also provides a defrosting control method for the heat source tower system, wherein the heat source tower system comprises the heat exchange loop and the defrosting loop; the heat exchange loop comprises a heat source tower, and the heat source tower is circularly connected with an external heat exchange mechanism; the defrosting loop comprises a buffer mechanism, a conveying mechanism, a heating mechanism and a heat source tower which are sequentially connected end to end; the heat source tower includes a housing and a heat exchanger disposed within the housing. As shown in fig. 2, the defrost control method includes the steps of:
s1, judging whether the heat exchanger needs defrosting or not under the condition that the heat source tower system is in a heating mode;
and S2, selectively enabling the heat source tower system to enter a defrosting mode according to the judgment result of whether the heat exchanger needs defrosting.
In a preferred embodiment, the heat source tower further comprises a wind pressure switch mounted on the outer shell; in step S1, the step of "determining whether the heat exchanger needs defrosting" includes:
s111, judging whether the wind pressure switch is turned on or not;
s112, if the wind pressure switch is turned on, judging that the heat exchanger needs defrosting;
and S113, if the wind pressure switch is closed, judging that the heat exchanger does not need defrosting.
In step S112, if the wind pressure switch is turned on, which indicates that the heat exchanger is frosted and the frosted thickness is thick, and the heat exchanger cannot operate normally, it is determined that the heat exchanger needs to be defrosted.
In step S113, if the wind pressure switch is closed, which indicates that the heat exchanger is not frosted or has a small frosting thickness and the heat exchanger can normally operate, it is determined that the heat exchanger does not need to be defrosted.
As an alternative implementation, in step S1, the step of "determining whether the heat exchanger needs defrosting" includes:
s121, acquiring the inlet temperature of the heat exchanger;
s122, acquiring the outlet temperature of the heat exchanger;
s123, judging whether the difference value of the inlet temperature and the outlet temperature is smaller than a first preset temperature difference threshold value or not;
s124, if the difference value of the inlet temperature and the outlet temperature is smaller than a first preset temperature difference threshold value, judging that the heat exchanger needs defrosting;
and S125, if the difference value of the inlet temperature and the outlet temperature is greater than or equal to a first preset temperature difference threshold value, judging that the heat exchanger does not need defrosting.
In step S124, if the difference between the inlet temperature and the outlet temperature is smaller than the first preset temperature difference threshold, it indicates that the heat exchanger is frosted and the frosting thickness is thick, so that the heat exchange effect of the heat exchanger is deteriorated, and the heat exchanger cannot normally operate, it is determined that the heat exchanger needs defrosting.
In step S125, if the difference between the inlet temperature and the outlet temperature is greater than or equal to the first preset temperature difference threshold, it indicates that the heat exchanger is not frosted or has a small frosting thickness, the heat exchange effect of the heat exchanger is good, and the heat exchanger can normally operate, it is determined that the heat exchanger does not need defrosting.
In the above steps, a conclusion whether the heat exchanger needs defrosting is given through setting of the first preset temperature difference threshold value. The first preset temperature difference threshold is the maximum temperature difference for judging whether defrosting is needed or not according to the temperature difference change of the inlet temperature and the outlet temperature of the heat exchanger. Of course, the first preset temperature difference threshold is not limited to the temperature difference exemplified above, and may be other temperature differences, such as temperature differences obtained by a person skilled in the art according to experiments under a specific working condition, or empirical temperature differences obtained according to experiments, and the person skilled in the art may flexibly adjust and set the temperature difference threshold.
As another alternative embodiment, the step of "determining whether the heat exchanger needs defrosting" in the step S1 includes:
s131, acquiring the outlet temperature of the heat exchanger;
s132, acquiring the ambient temperature;
s133, judging whether the difference value of the outlet temperature and the ambient temperature is greater than a second preset temperature difference threshold value;
s134, if the difference value between the outlet temperature and the ambient temperature is larger than a second preset temperature difference threshold value, judging that the heat exchanger needs defrosting;
and S135, if the difference value of the outlet temperature and the ambient temperature is less than or equal to a second preset temperature difference threshold value, judging that the heat exchanger does not need defrosting.
In step S134, if the difference between the outlet temperature and the ambient temperature is greater than the second preset temperature difference threshold, it indicates that the heat exchanger is frosted and the frosting thickness is thick, so that the heat exchange effect of the heat exchanger is poor and the heat exchanger cannot operate normally, and it is determined that the heat exchanger needs defrosting.
In step S135, if the difference between the outlet temperature and the ambient temperature is less than or equal to the second preset temperature difference threshold, it indicates that the heat exchanger is not frosted or has a small frosting thickness, the heat exchange effect of the heat exchanger is good, and the heat exchanger can normally operate, and it is determined that the heat exchanger does not need defrosting.
In the above steps, a conclusion whether the heat exchanger needs defrosting is given through setting of the second preset temperature difference threshold value. The second preset temperature difference threshold is the minimum temperature difference for judging whether defrosting is needed according to the temperature difference change of the outlet temperature of the heat exchanger and the ambient temperature. Of course, the second preset temperature difference threshold is not limited to the temperature difference exemplified above, and may be other temperature differences, such as temperature differences obtained by a person skilled in the art according to experiments under a specific working condition, or empirical temperature differences obtained according to experiments, and the person skilled in the art may flexibly adjust and set the temperature difference threshold.
In a preferred embodiment, the step of "selectively enabling the heat source tower system to enter the defrosting mode according to the determination result of whether the heat exchanger needs defrosting" in the step S2 specifically includes:
s21, if the heat exchanger needs defrosting, enabling the heat source tower system to enter a defrosting mode;
and S22, if the heat exchanger does not need defrosting, maintaining the heating mode of the heat source tower system, and not entering the defrosting mode.
In step S21, if the heat exchanger needs to be defrosted, it is indicated that the heat exchanger is frosted and the frosting thickness is thick, which results in a poor heat exchange effect of the heat exchanger, the heat exchanger cannot operate normally, and the heat exchanger needs to be defrosted, so that the heat source tower system enters a defrosting mode.
In step S22, if the heat exchanger does not need defrosting, it indicates that the heat exchanger has not frosted or has a small frosting thickness, the heat exchange effect of the heat exchanger is good, the heat exchanger can operate normally, and the heat exchanger does not need defrosting, so that the heat source tower system maintains the heating mode and does not enter the defrosting mode.
Preferably, the defrost circuit further comprises a second target flow switch; in step S21, the step of "causing the heat source tower system to enter the defrosting mode" includes:
S211, judging whether a second target current switch is turned on or not;
s212, if the second target flow switch is turned on, enabling the heat source tower system to enter a defrosting mode;
and S213, if the second target flow switch is closed, the heat source tower system is not in a defrosting mode.
In step S212, if the second target flow switch is turned on, it indicates that the first refrigerant in the defrosting circuit can flow normally, and the defrosting circuit can operate normally, so that the heat source tower system enters a defrosting mode.
In step 213, if the second target flow switch is closed, it indicates that the first refrigerant in the defrosting circuit cannot flow normally and the defrosting circuit cannot operate normally, the heat source tower system is not in the defrosting mode.
Preferably, after the step S213 "making the heat source tower system not enter the defrosting mode", the defrosting control method further includes:
and S31, sending prompt information to prompt a user to stop the first refrigerant in the defrosting circuit.
Preferably, the heat source tower system may send a prompt message in the form of voice, text, picture, light, etc. to prompt a user to stop the flow of the first refrigerant in the defrosting circuit.
Under the condition that the heat exchanger is adopted to heat the first refrigerant in the defrosting circuit, the heat exchanger also comprises a first target flow switch; in step S212, the step of "if the second target flow switch is turned on, causing the heat source tower system to enter the defrosting mode" further includes:
S2121, judging whether a first target current switch is turned on or not;
s2122, if the first target flow switch is turned on, enabling the heat source tower system to enter a defrosting mode;
and S2123, if the first target flow switch is closed, enabling the heat source tower system not to enter a defrosting mode.
In step S2122, if the first target flow switch is turned on, it indicates that the second condensate can flow normally between the heat exchanger and the external heat source, and the heat exchanger can operate normally, so that the heat source tower system enters a defrosting mode.
In step S2123, if the first target flow switch is closed, which indicates that the second condensation is cut off between the heat exchanger and the external heat source and the heat exchanger cannot normally operate, the heat source tower system is not in the defrosting mode.
It should be further explained that, it is also possible to first determine whether the first target flow switch is turned on, and then determine whether the second target flow switch is turned on; whether the second target current switch and the first target current switch are turned on or not can be judged at the same time, and a person skilled in the art can flexibly adjust and set the sequence for judging whether the second target current switch and the first target current switch are turned on or not.
It should be further noted that, in the case of heating the first refrigerant in the defrosting circuit by the electric heater, the step of determining whether the first target flow switch is turned on is not performed. Under the condition that the heat exchanger and the electric heater are adopted to heat the first refrigerant in the defrosting loop at the same time, the step of judging whether the first target flow switch is turned on or not needs to be executed.
Preferably, after the step S2123 of not entering the defrosting mode to the heat source tower system, the defrosting control method further includes:
and S32, sending prompt information to prompt a user that the heat exchanger cannot normally operate.
Preferably, the heat source tower system can send prompt information in the form of voice, characters, pictures, light and the like to prompt a user that the heat exchanger cannot normally operate.
Referring now to fig. 3, fig. 3 is a flow chart of a defrost control method according to an embodiment of the present invention.
In one possible embodiment, as shown in fig. 3, the flow of the defrosting control method for the heat source tower system of the present invention may be:
s111, judging whether a wind pressure switch is turned on or not under the condition that a heat source tower system is in a heating mode;
s112, if the wind pressure switch is turned on, judging that the heat exchanger needs defrosting;
s113, if the wind pressure switch is closed, judging that the heat exchanger does not need defrosting;
after step S112, step S211 is performed;
s211, judging whether a second target current switch is turned on or not;
s2121, if the second target current switch is turned on, judging whether the first target current switch is turned on;
s2122, if the first target flow switch is turned on, enabling the heat source tower system to enter a defrosting mode;
S2123, if the first target flow switch is closed, the heat source tower system does not enter a defrosting mode;
s213, if the second target flow switch is closed, the heat source tower system does not enter a defrosting mode;
after step S213, step S31 is executed;
s31, sending prompt information to prompt a user to stop the flow of the first refrigerant in the defrosting loop;
after step S2123, step S32 is executed;
s32, sending prompt information to prompt a user that the heat exchanger cannot normally operate;
after step S113, step S22 is executed;
and S22, maintaining the heating mode of the heat source tower system and not entering the defrosting mode.
In addition, the combination of the method steps of the present invention is not limited to the above-mentioned combination, and those skilled in the art can flexibly adjust the combination of the above-mentioned method steps in practical applications, regardless of the combination of the method steps, as long as the scale attached to the heating element can be removed.
It should be noted that the above-mentioned embodiment is only a preferred embodiment of the present invention, and is only used for illustrating the principle of the method of the present invention, and is not intended to limit the protection scope of the present invention, and in practical applications, those skilled in the art can implement the above-mentioned function allocation by different steps, i.e. re-dividing or combining the steps in the embodiment of the present invention, as required. For example, the steps of the above embodiments may be combined into one step, or further divided into multiple sub-steps to complete all or part of the functions described above. For the names of the steps involved in the embodiments of the present invention, they are only for distinguishing the respective steps, and are not to be construed as limiting the present invention.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A heat source tower system is characterized by comprising a heat exchange loop and a defrosting loop;
the heat exchange loop comprises the heat source tower, and the heat source tower is circularly connected with an external heat exchange mechanism;
the defrosting circuit comprises a buffer mechanism, a conveying mechanism, a heating mechanism and a heat source tower which are sequentially connected end to end, wherein the conveying mechanism, the buffer mechanism and the heating mechanism are arranged as follows: when the heat source tower system is in a defrosting mode, the conveying mechanism enables a first refrigerant in the defrosting loop to circularly flow, the buffer mechanism buffers the pressure of the first refrigerant, and the heating mechanism heats the first refrigerant, so that the heat source tower is defrosted in a heating mode.
2. The heat source tower system of claim 1, wherein the heating mechanism comprises a heat exchanger connected between an outlet end of the transport mechanism and an inlet end of the heat source tower for exchanging heat between a first refrigerant in the defrost circuit and a second refrigerant in the heat exchanger.
3. A heat source tower system as claimed in claim 2, wherein the heat exchanger comprises:
a housing having a heat exchange chamber formed therein;
the first heat exchange pipeline is arranged in the heat exchange cavity, and the outlet end of the conveying mechanism is connected with the inlet end of the heat source tower through the first heat exchange pipeline;
and the second heat exchange pipeline is arranged in the heat exchange cavity and is circularly connected with an external heat source.
4. The heat source tower system of claim 3, wherein the heat exchanger further comprises a first electrically operated valve and a first target switch, the first electrically operated valve is connected between the outlet end of the external heat source and the inlet end of the second heat exchange pipeline, the first target switch is connected between the outlet end of the second heat exchange pipeline and the inlet end of the external heat source, and the first target switch is used for detecting whether the heat exchanger can normally operate.
5. A heat source tower system as claimed in claim 3, wherein the heating mechanism further comprises a heater connected between the outlet end of the first heat exchange line and the inlet end of the heat source tower for heating the first refrigerant.
6. A heat source tower system as claimed in claim 1, wherein the buffer mechanism comprises a buffer tank connected between the inlet end of the transport mechanism and the outlet end of the heat source tower for buffering the pressure of the first refrigerant.
7. A heat source tower system as claimed in claim 6, wherein the buffer mechanism further comprises a bypass line, the bypass line and the buffer tank being connected in parallel.
8. A heat source tower system as claimed in claim 7, wherein the buffer tank is further configured with a second electrically operated valve for selectively opening or closing the buffer tank in accordance with the pressure of the first refrigerant.
9. The heat source tower system according to any one of claims 1 to 8, wherein the defrost circuit further comprises a second target flow switch connected between the inlet end of the buffer mechanism and the outlet end of the heat source tower for detecting whether the defrost circuit can operate normally; and/or
The heat source tower comprises a shell, a heat exchanger arranged in the shell and a fan, wherein the fan is used for providing heat exchange airflow for the heat exchanger.
10. A heat source tower system as claimed in claim 9, wherein the heat source tower further comprises a detection means provided on the outer shell for detecting whether the heat exchanger is frosted.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910425055.XA CN111981733A (en) | 2019-05-21 | 2019-05-21 | Heat source tower system |
| PCT/CN2019/126643 WO2020233112A1 (en) | 2019-05-21 | 2019-12-19 | Heat source tower system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910425055.XA CN111981733A (en) | 2019-05-21 | 2019-05-21 | Heat source tower system |
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| CN201910425055.XA Pending CN111981733A (en) | 2019-05-21 | 2019-05-21 | Heat source tower system |
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| WO (1) | WO2020233112A1 (en) |
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| CN112539573B (en) * | 2020-12-23 | 2024-04-09 | 华北电力大学 | Efficient heat exchange device and heat exchange method for super heat pump |
| CN114486080A (en) * | 2021-12-24 | 2022-05-13 | 中国空间技术研究院 | Anti-frosting universal heat flow instrument sealing test conversion tool |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123193A (en) * | 2013-03-26 | 2013-05-29 | 长沙鹞翔科技有限公司 | Defrosting device for closed type heat source tower |
| CN104329839A (en) * | 2013-07-22 | 2015-02-04 | 广东美的暖通设备有限公司 | Air-conditioning system and low-temperature starting control method thereof |
| CN106091076A (en) * | 2016-07-25 | 2016-11-09 | 湖南大学 | A kind of heat source tower heat pump using salt-free formula external auxiliary heating frosting-proof device |
| CN109186147A (en) * | 2018-08-30 | 2019-01-11 | 鲍家邻 | Adjoining pipe hydrojet defrosting heat source tower heat pump device |
| CN109210815A (en) * | 2017-07-06 | 2019-01-15 | 魏宇杰 | A kind of refrigeration system |
| CN210179952U (en) * | 2019-05-21 | 2020-03-24 | 青岛海尔空调电子有限公司 | Heat source tower system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010014375A (en) * | 2008-07-07 | 2010-01-21 | Kansai Electric Power Co Inc:The | Defrosting method of heating tower |
| CN205909384U (en) * | 2016-07-25 | 2017-01-25 | 湖南大学 | Adopt salt -free formula to assist heat source tower heat pump that defrosting device is prevented to heat outward |
| CN208779753U (en) * | 2018-08-22 | 2019-04-23 | 爱能森（深圳）高端智能装备有限公司 | A kind of heat pump unit with energy storage defrosting function |
-
2019
- 2019-05-21 CN CN201910425055.XA patent/CN111981733A/en active Pending
- 2019-12-19 WO PCT/CN2019/126643 patent/WO2020233112A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123193A (en) * | 2013-03-26 | 2013-05-29 | 长沙鹞翔科技有限公司 | Defrosting device for closed type heat source tower |
| CN104329839A (en) * | 2013-07-22 | 2015-02-04 | 广东美的暖通设备有限公司 | Air-conditioning system and low-temperature starting control method thereof |
| CN106091076A (en) * | 2016-07-25 | 2016-11-09 | 湖南大学 | A kind of heat source tower heat pump using salt-free formula external auxiliary heating frosting-proof device |
| CN109210815A (en) * | 2017-07-06 | 2019-01-15 | 魏宇杰 | A kind of refrigeration system |
| CN109186147A (en) * | 2018-08-30 | 2019-01-11 | 鲍家邻 | Adjoining pipe hydrojet defrosting heat source tower heat pump device |
| CN210179952U (en) * | 2019-05-21 | 2020-03-24 | 青岛海尔空调电子有限公司 | Heat source tower system |
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