CN104457396A - Anti-freezing method and system for heat exchanger - Google Patents
Anti-freezing method and system for heat exchanger Download PDFInfo
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- CN104457396A CN104457396A CN201410664766.XA CN201410664766A CN104457396A CN 104457396 A CN104457396 A CN 104457396A CN 201410664766 A CN201410664766 A CN 201410664766A CN 104457396 A CN104457396 A CN 104457396A
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Abstract
According to the method and the system for preventing the heat exchanger from freezing provided by the embodiment of the invention, the heating device is fixed on the shell of the heat exchanger, and the temperature of a target object is acquired, wherein the temperature of the target object is the ambient temperature or the water temperature at the water outlet of the heat exchanger; and when the temperature of the target object is lower than a first-class preset threshold corresponding to the target object, starting a heating device fixed on the shell of the heat exchanger to heat the heat exchanger, so that the liquid in the heat exchanger is prevented from freezing and further expanding the heat exchanger.
Description
Technical Field
The invention relates to the technical field of heat exchangers, in particular to an anti-freezing method and an anti-freezing system for a heat exchanger.
Background
Generally, a heat exchanger is used for exchanging heat between a refrigerant and liquid, and when the temperature of the liquid in the heat exchanger is too low, the liquid can be frozen to damage the heat exchanger. The common solution at present is to turn on the water pump to circulate the liquid to prevent freezing, however, the inventor finds that if the ambient temperature is too low for a long time, the liquid may freeze to damage the heat exchanger.
Therefore, how to prevent the liquid in the heat exchanger from freezing and expanding the heat exchanger becomes a problem to be solved urgently.
Disclosure of Invention
The invention aims to provide a method and a system for preventing a heat exchanger from being frozen to prevent the heat exchanger from being damaged due to freezing of liquid in the heat exchanger.
In order to achieve the above purpose, the embodiment of the present invention provides the following technical solutions:
a heat exchanger freeze prevention system comprising:
the heating device is fixed on the shell of the heat exchanger;
the first acquisition device is used for acquiring the temperature of a target object, wherein the temperature of the target object is the ambient temperature or the water temperature at the water outlet of the heat exchanger;
the first control device is used for starting the heating device to heat the heat exchanger when the temperature of the target object is lower than a first type of preset threshold corresponding to the target object.
The above system, preferably, when the temperature of the target object is an ambient temperature, the system further includes:
the second collecting device is used for collecting the water temperature of the water outlet of the heat exchanger;
and the second control device is used for closing the heating device when the water temperature of the water outlet is greater than a second type preset threshold value.
The above system, preferably, when the temperature of the target object is the water temperature at the water outlet of the heat exchanger, the system further includes:
and the third control device is used for closing the heating device when the water temperature of the water outlet is greater than a second type preset threshold value.
In the above system, preferably, the heating device is fixed on the heat exchanger shell through a heat conducting material with adhesive on the surface.
The above system, preferably, the system further comprises:
and the input device is used for inputting the first-type preset threshold value and/or the second-type preset threshold value.
The above system, preferably, the system further comprises:
and the display device is used for displaying the first-type preset threshold value and/or the second-type preset threshold value.
A heat exchange system comprising: a heat exchanger and a heat exchanger antifreeze system as claimed in any preceding claim.
A method of preventing freezing in a heat exchanger, comprising:
collecting the temperature of a target object, wherein the temperature of the target object is the ambient temperature or the water temperature at the water outlet of a heat exchanger;
and when the temperature of the target object is lower than a first-class preset threshold corresponding to the target object, starting a heating device fixed on the heat exchanger shell to heat the heat exchanger.
In the above method, preferably, when the temperature of the target object is an ambient temperature, the method further includes:
collecting the water temperature at the water outlet of the heat exchanger;
and when the water temperature of the water outlet is greater than a second type preset threshold value, closing the heating device.
In the above method, preferably, when the temperature of the target object is the water temperature at the water outlet of the heat exchanger, the method further includes:
and when the water temperature of the water outlet is greater than a second type preset threshold value, closing the heating device.
According to the scheme, the anti-freezing method and the system for the heat exchanger, which are provided by the embodiment of the invention, are characterized in that the heating device is fixed on the shell of the heat exchanger, and is used for collecting the temperature of a target object, wherein the temperature of the target object is the ambient temperature or the water temperature at the water outlet of the heat exchanger; and when the temperature of the target object is lower than a first-class preset threshold corresponding to the target object, starting a heating device fixed on the shell of the heat exchanger to heat the heat exchanger, so that the liquid in the heat exchanger is prevented from freezing and further expanding the heat exchanger.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an anti-freezing system for a heat exchanger according to an embodiment of the present invention;
FIG. 2 is another schematic structural diagram of a system for preventing freezing of a heat exchanger according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an anti-freezing system for a heat exchanger according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an anti-freezing system for a heat exchanger according to an embodiment of the present invention;
FIG. 5 is a schematic view of another embodiment of the anti-freezing system for a heat exchanger according to the present invention;
FIG. 6 is a flow chart of one implementation of the method for preventing freezing of a heat exchanger according to the embodiment of the invention;
FIG. 7 is a flow chart of another implementation of the method for preventing freezing of a heat exchanger according to the embodiment of the invention;
FIG. 8 is a flowchart of another implementation of the method for preventing freezing of a heat exchanger according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an anti-freezing system of a heat exchanger according to an embodiment of the present invention, which may include:
a heating device 11, a first collecting device 12 and a first control device 13; the first control device 13 is respectively connected with the heating device 11 and the first collecting device 12, wherein,
the heating device 11 is fixed on the shell of the heat exchanger, and the specific fixing position is not limited in particular. Alternatively, the heating device 11 may be fixed to the housing of the heat exchanger by means of bolts or the like.
The first acquisition device 12 is used for acquiring the temperature of a target object, wherein the temperature of the target object is the ambient temperature or the water temperature at the water outlet of the heat exchanger;
the first control device 13 is configured to turn on the heating device to heat the heat exchanger when the temperature of the target object is lower than a first type preset threshold corresponding to the target object.
In the embodiment of the invention, the first type of preset threshold is used for judging whether the heating device should be started or not. The target objects are different, and the corresponding first-type preset threshold values are also different. For convenience of description, the first type of preset threshold corresponding to the ambient temperature is recorded as a first preset threshold, and the first type of preset threshold corresponding to the water temperature at the water outlet of the heat exchanger is recorded as a second preset threshold.
That is, if the temperature of the target object is the ambient temperature, the first control device 13 is configured to turn on the heating device when the ambient temperature is lower than a first preset threshold. If the temperature corresponding to the target is the water temperature at the water outlet of the heat exchanger, the first control device 13 is configured to start the heating device when the water temperature at the water outlet of the heat exchanger is smaller than a second preset threshold.
According to the anti-freezing system for the heat exchanger, provided by the embodiment of the invention, the heating device is fixed on the shell of the heat exchanger, and the temperature of a target object is acquired, wherein the temperature of the target object is the ambient temperature or the water temperature at the water outlet of the heat exchanger; and when the temperature of the target object is lower than a first-class preset threshold corresponding to the target object, starting a heating device fixed on the shell of the heat exchanger to heat the heat exchanger, so that the liquid in the heat exchanger is prevented from freezing and further expanding the heat exchanger.
In the above embodiment, optionally, when the heat exchanger is not required to be heated (e.g. when the climate is warm), the heater may be manually turned off.
When the temperature of the target object is the ambient temperature, on the basis of the embodiment shown in fig. 1, another schematic structural diagram of the anti-freezing system for a heat exchanger provided by the present application is shown in fig. 2, and further, the anti-freezing system for a heat exchanger may further include:
a second acquisition device 21 and a second control device 22; wherein,
the second collecting device 21 is used for collecting the water temperature at the water outlet of the heat exchanger;
the second control device 22 is configured to turn off the heating device to stop heating the heat exchanger when the water temperature at the water outlet is greater than a second type preset threshold.
The second type of preset threshold is used to determine whether the heating device should be turned off. In the embodiment of the invention, whether the heating device is turned off or not is judged according to the water temperature at the water outlet of the heat exchanger, so that the automatic turning on and off of the heating device is realized.
The functions of the second control device 22 and the functions of the first control device 13 may be integrated in one device, and the functions of the second control device 22 and the first control device 13 are realized by the same device.
When the temperature of the target object is the water temperature at the water outlet of the heat exchanger, on the basis of the embodiment shown in fig. 1, a further structural schematic diagram of the anti-freezing system of the heat exchanger provided by the present application is shown in fig. 3, and further, the anti-freezing system of the heat exchanger may further include:
and the third control device 31 is used for turning off the heating device to stop heating the heat exchanger when the water temperature at the water outlet is greater than the second-class preset threshold value.
The embodiment of the invention provides another implementation mode capable of automatically turning on and off the heating device.
The functions of the third control device 31 and the functions of the first control device 13 may be integrated into one device, and the functions of the third control device 31 and the first control device 13 are realized by the same device.
In the above embodiment, optionally, the heating device 11 may be fixed on the heat exchanger housing by a heat conducting material with adhesive on the surface. Specifically, the heating device 11 and the heat exchanger may be wrapped by a heat conductive material having an adhesive on a surface thereof, wherein the heating device 11 is located between the heat exchanger and the heat conductive material, so that the heat exchanger can be uniformly heated.
In the above embodiment, optionally, the first type of preset threshold may be a preset threshold of the system itself.
The first type of preset threshold value can also be set by a user according to the actual situation. Specifically, on the basis of the embodiment shown in fig. 1, another schematic structural diagram of the anti-freezing system of the heat exchanger provided by the present application is shown in fig. 4, and may further include:
an input device 41 is used for inputting the first type preset threshold value and/or the second type preset threshold value.
The user can self-define the first type of preset threshold value and/or the second type of preset threshold value according to the actual environment temperature and the practical situation. Therefore, the control of the anti-freezing system of the heat exchanger can better meet the actual requirement.
Specifically, the user may select to use a self-defined preset threshold, or may select to use a default value of the system, that is, a threshold of the system itself. Preferably, the control device (including the first control device 13, the second control device 22 and the third control device 31) controls the preset threshold value input by the user if the preset threshold value of the first type and/or the preset threshold value of the second type are input by the user through the input device 41, and otherwise controls the default value of the system.
It should be noted that the input device 41 may also be applied to the embodiments shown in fig. 2 and 3.
Further, in order to facilitate the user to determine whether the input threshold is correct, on the basis of the embodiment shown in fig. 4, another schematic structural diagram of the anti-freezing system for a heat exchanger provided by the present application is shown in fig. 5, and may further include:
and the display device 51 is used for displaying the first-type preset threshold value and/or the second-type preset threshold value.
The application also provides a heat exchange system, which comprises a heat exchanger and an anti-freezing system of the heat exchanger shown in any one of the figures.
Corresponding to the embodiment of the system, the present application further provides a method for preventing freezing of a heat exchanger, and an implementation flowchart of the method for preventing freezing of a heat exchanger provided by the present application is shown in fig. 6, and may include:
step S61: collecting the temperature of a target object, wherein the temperature of the target object is the ambient temperature or the water temperature at the water outlet of a heat exchanger;
step S62: and when the temperature of the target object is lower than a first-class preset threshold corresponding to the target object, starting a heating device fixed on the heat exchanger shell to heat the heat exchanger.
In the embodiment of the invention, the first type of preset threshold is used for judging whether the heating device should be started or not. The target objects are different, and the corresponding first-type preset threshold values are also different. For convenience of description, the first type of preset threshold corresponding to the ambient temperature is recorded as a first preset threshold, and the first type of preset threshold corresponding to the water temperature at the water outlet of the heat exchanger is recorded as a second preset threshold.
That is, if the temperature of the target object is the ambient temperature, the heating device is turned on when the ambient temperature is lower than the first preset threshold. And if the temperature corresponding to the target is the water temperature of the water outlet of the heat exchanger, starting the heating device when the water temperature of the water outlet of the heat exchanger is smaller than a second preset threshold value.
According to the anti-freezing method for the heat exchanger, a heating device is fixed on a shell of the heat exchanger, and the temperature of a target object is collected, wherein the temperature of the target object is the ambient temperature or the water temperature at a water outlet of the heat exchanger; and when the temperature of the target object is lower than a first-class preset threshold corresponding to the target object, starting a heating device fixed on the shell of the heat exchanger to heat the heat exchanger, so that the liquid in the heat exchanger is prevented from freezing and further expanding the heat exchanger.
When the temperature of the target object is the ambient temperature, on the basis of the embodiment shown in fig. 6, a flowchart of another implementation of the method for preventing freezing of a heat exchanger according to the embodiment of the present application is shown in fig. 7, and may further include:
step S71: collecting the water temperature at the water outlet of the heat exchanger;
in the embodiment of the invention, the water temperature of the water outlet of the heat exchanger is also collected besides the environment temperature.
Step S72: and when the water temperature of the water outlet is greater than a second type preset threshold value, the heating device is closed to stop heating the heat exchanger.
In the embodiment of the invention, whether the heating device is turned off or not is judged according to the water temperature at the water outlet of the heat exchanger, so that the automatic turning on and off of the heating device is realized.
When the temperature of the target object is the water temperature at the water outlet of the heat exchanger, on the basis of the embodiment shown in fig. 6, a flowchart of another implementation of the method for preventing freezing of the heat exchanger provided in the embodiment of the present application is shown in fig. 8, and may further include:
step S81: and when the water temperature of the water outlet is greater than a second type preset threshold value, the heating device is closed to stop heating the heat exchanger.
In the embodiment of the invention, the automatic control of the opening and closing of the heater is realized through the water temperature at the water outlet of the heat exchanger.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the several embodiments provided in the present application, it should be understood that the disclosed system and method may be implemented in other ways. For example, the above-described system embodiments are merely illustrative, and for example, the division of the devices is merely a logical division, and other divisions may be realized in practice, for example, a plurality of devices or components may be combined or integrated into another device, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, and the indirect coupling or communication connection of the devices may be in an electrical, mechanical or other form.
In addition, each control device in each embodiment of the present invention may be integrated into one processing unit, each unit may exist alone physically, or two or more units may be integrated into one unit.
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 (10)
1. A heat exchanger freeze prevention system, comprising:
the heating device is fixed on the shell of the heat exchanger;
the first acquisition device is used for acquiring the temperature of a target object, wherein the temperature of the target object is the ambient temperature or the water temperature at the water outlet of the heat exchanger;
the first control device is used for starting the heating device to heat the heat exchanger when the temperature of the target object is lower than a first type of preset threshold corresponding to the target object.
2. The system of claim 1, wherein when the temperature of the target object is an ambient temperature, the system further comprises:
the second collecting device is used for collecting the water temperature of the water outlet of the heat exchanger;
and the second control device is used for closing the heating device when the water temperature of the water outlet is greater than a second type preset threshold value.
3. The system of claim 1, wherein when the temperature of the target object is a water temperature at the heat exchanger outlet, the system further comprises:
and the third control device is used for closing the heating device when the water temperature of the water outlet is greater than a second type preset threshold value.
4. The system of any one of claims 1-3, wherein the heating device is secured to the heat exchanger housing by a thermally conductive material having an adhesive on a surface thereof.
5. The system according to any one of claims 1-3, further comprising:
and the input device is used for inputting the first-type preset threshold value and/or the second-type preset threshold value.
6. The system of claim 5, further comprising:
and the display device is used for displaying the first-type preset threshold value and/or the second-type preset threshold value.
7. A heat exchange system, comprising: a heat exchanger and a heat exchanger freeze protection system as claimed in any one of claims 1 to 6.
8. A method for preventing freezing of a heat exchanger is characterized by comprising the following steps:
collecting the temperature of a target object, wherein the temperature of the target object is the ambient temperature or the water temperature at the water outlet of a heat exchanger;
and when the temperature of the target object is lower than a first-class preset threshold corresponding to the target object, starting a heating device fixed on the heat exchanger shell to heat the heat exchanger.
9. The method of claim 8, wherein when the temperature of the target object is an ambient temperature, the method further comprises:
collecting the water temperature at the water outlet of the heat exchanger;
and when the water temperature of the water outlet is greater than a second type preset threshold value, closing the heating device.
10. The method of claim 8, wherein when the target object temperature is a water temperature at the heat exchanger outlet, the method further comprises:
and when the water temperature of the water outlet is greater than a second type preset threshold value, closing the heating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410664766.XA CN104457396A (en) | 2014-11-19 | 2014-11-19 | Anti-freezing method and system for heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410664766.XA CN104457396A (en) | 2014-11-19 | 2014-11-19 | Anti-freezing method and system for heat exchanger |
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| CN104457396A true CN104457396A (en) | 2015-03-25 |
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| CN201410664766.XA Pending CN104457396A (en) | 2014-11-19 | 2014-11-19 | Anti-freezing method and system for heat exchanger |
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Application publication date: 20150325 |
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