CN117647056A - Heat dissipation system, control method and refrigerator - Google Patents
Heat dissipation system, control method and refrigerator Download PDFInfo
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- CN117647056A CN117647056A CN202311656215.4A CN202311656215A CN117647056A CN 117647056 A CN117647056 A CN 117647056A CN 202311656215 A CN202311656215 A CN 202311656215A CN 117647056 A CN117647056 A CN 117647056A
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 264
- 239000000498 cooling water Substances 0.000 claims abstract description 63
- 238000009833 condensation Methods 0.000 claims abstract description 37
- 239000003507 refrigerant Substances 0.000 claims abstract description 36
- 230000005494 condensation Effects 0.000 claims abstract description 35
- 239000007921 spray Substances 0.000 claims description 27
- 238000010257 thawing Methods 0.000 claims description 16
- 238000011084 recovery Methods 0.000 claims description 11
- 239000013589 supplement Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 abstract description 9
- 230000005855 radiation Effects 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Abstract
The invention discloses a heat dissipation system, a control method and a refrigerator, comprising the following steps: the first heat exchanger component is arranged in a compressor cavity of the refrigerator and exchanges heat with high-temperature refrigerant flowing out of an exhaust pipe of the compressor; the second heat exchanger is attached to the wall surface of the back of the refrigerator and is provided with a return pipeline for conveying cooling water to the first heat exchanger; and the water pump is used for conveying the cooling water of the first heat exchanger assembly to the second heat exchanger for cooling through a conveying pipeline. The first heat exchanger component contained in the heat radiation system is used as an original condenser of the refrigerator, the second heat exchanger adopts contact heat radiation to assist the first heat exchanger component to exchange heat, and the heat is conducted to the wall surface of the back of the refrigerator through the ground source heat radiation system and is diffused on the wall surface, so that the refrigerator maintains a lower condensation temperature.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a heat dissipation system, a control method and a refrigerator.
Background
The existing embedded refrigerator products in the market all adopt forced convection heat dissipation, and the back of the embedded refrigerator clings to a wall, so that heat dissipation can be only carried out from the top or bottom of the front of the refrigerator. The top heat dissipation air duct is long, the wind resistance is large, and the high air quantity centrifugal fan which needs to be selected is used for sending wind out from the press bin; the bottom heat dissipation space is little, and wind channel assembly requirement is high, and the radiating effect is poor.
Disclosure of Invention
The invention provides a heat dissipation system, a control method and a refrigerator, and aims to solve the technical problem that a refrigerator condenser in the prior art is poor in heat dissipation efficiency.
The technical scheme adopted by the invention is as follows:
the invention provides a heat dissipation system, comprising:
the first heat exchanger component is arranged in a compressor cavity of the refrigerator and exchanges heat with high-temperature refrigerant flowing out of an exhaust pipe of the compressor through cooling water;
the second heat exchanger is attached to the wall surface of the back of the refrigerator and is connected with a return pipeline to convey cooling water to the first heat exchanger;
and the water pump is used for conveying the cooling water of the first heat exchanger assembly to the second heat exchanger through a conveying pipeline.
In a first embodiment, the first heat exchanger component is a plate heat exchanger, the refrigerant flowing out of the compressor exhaust pipe passes through the refrigerant inlet and outlet of the plate heat exchanger, the return pipeline is connected with the cooling water inlet of the plate heat exchanger, and the conveying pipeline is connected with the cooling water outlet of the plate heat exchanger.
In a second embodiment, the first heat exchanger assembly comprises: the device comprises a water storage box of the compressor cavity and a micro-channel heat exchanger arranged in the water storage box, wherein the refrigerant flowing out of the compressor exhaust pipe passes through a refrigerant inlet and a refrigerant outlet of the micro-channel heat exchanger, a water pump is arranged in the water storage box and conveys cooling water in the water storage box to the second heat exchanger through a conveying pipeline, and the water storage box is connected with a backflow pipeline.
Furthermore, the water storage box is also provided with a spray head with a water spray opening aligned to the upper half part of the compressor.
Further, the water supply pipeline of the water storage box comprises a defrosting water pipeline and an external water supply pipeline of the refrigerator.
Preferably, the second heat exchanger is a tube sheet heat exchanger.
The invention also provides a control method of the heat dissipation system, which comprises the following steps:
acquiring a set value Tk and a set value Tg corresponding to the current environment temperature T2;
detecting a condensation outlet temperature T1 of a refrigerant outlet of the first heat exchanger assembly, and detecting a cooling water outlet temperature T3 of the second heat exchanger;
and controlling the switch and the running gear of the water pump according to the condensation outlet temperature T1 and the cooling water outlet temperature T3.
Further, controlling the water pump to be turned on or off and the operating gear according to the condensation outlet temperature T1 and the cooling water outlet temperature T3 specifically includes:
when the condensation outlet temperature T1 is greater than or equal to a set value Tk, starting the water pump, controlling the water pump to run for an initial period of time in a preset high-grade mode, and setting C=0;
selecting an operation gear of the water pump according to a preset temperature range in which a difference value between the cooling water outlet temperature T3 and the condensing outlet temperature T1 is located, and operating for a second duration;
and determining whether the water pump continues to run or is closed according to the current values of the condensation outlet temperatures T1 and C.
Further, the determining whether the water pump continues to operate or is turned off according to the current values of the condensation outlet temperatures T1 and C specifically includes:
if the condensation outlet temperature T1 is larger than the set value Tk;
the value of C is increased by 1, and whether the value of C is larger than or equal to a preset maximum value is judged;
if yes, controlling the water pump to be closed for a preset closing time period, and returning to the step of acquiring a set value Tk and a set value Tg corresponding to the current environment temperature according to the current environment temperature; if not, returning to the step of selecting the operation gear of the water pump according to the preset temperature range where the difference value between the cooling water outlet temperature T3 and the condensation outlet temperature T1 is located.
In another embodiment, the controlling the switch and the operating gear of the water pump according to the condensation outlet temperature T1 and the cooling water outlet temperature T3 specifically includes:
when the condensation outlet temperature T1 is greater than or equal to the set value Tk, starting the water pump, and controlling the water pump to run for an initial period of time in a preset high-grade mode;
selecting an operation gear of the water pump according to a preset temperature range in which a difference value between the cooling water outlet temperature T3 and the condensing outlet temperature T1 is located, and operating for a second duration;
and determining whether the water pump continues to run or is turned off according to the current T1.
The control method further comprises the steps of: and controlling the water storage box to add water or the spray nozzle to spray water according to the water level of the water storage box and the working condition of the refrigerator to keep the water level of the water storage box.
Further, the method for controlling the water adding of the water storage box or the water spraying of the spray head according to the water level of the water storage box and the working condition of the refrigerator to keep the water level of the water storage box specifically comprises the following steps:
when the water level of the water storage box is larger than a preset high water level, opening the spray head to reduce the water level;
when the water level of the water storage box is larger than a preset low water level and smaller than or equal to a preset high water level, and the refrigerator is in a defrosting period or a recovery period, a spray head is opened to reduce the water level;
when the water level of the water storage box is smaller than or equal to the preset low water level, and the refrigerator is in a defrosting period or a recovery period, controlling the water storage box to supplement water to the preset low water level.
When the water level of the water storage box is larger than the preset low water level and smaller than or equal to the preset high water level or smaller than or equal to the preset low water level, and the refrigerator is not in the defrosting period or the recovery period, the compressor is overheated, the water storage box is controlled to be filled with water to the preset high water level, and then the spray head is opened.
The invention also provides a refrigerator comprising the heat radiation system.
Compared with the prior art, the first heat exchanger component contained in the heat radiation system is used as an original condenser of the refrigerator, the second heat exchanger adopts contact heat radiation to assist the first heat exchanger component to exchange heat, and the heat is conducted to the wall surface of the back of the refrigerator through the ground source heat radiation system and is diffused on the wall surface, so that the refrigerator maintains a lower condensation temperature.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a first embodiment of the present invention;
FIG. 2 is a schematic view of a first heat exchanger assembly according to a first embodiment of the present invention;
FIG. 3 is a schematic front view of a first heat exchanger assembly according to a first embodiment of the present invention;
FIG. 4 is a schematic rear view of a first heat exchanger assembly according to a first embodiment of the present invention;
FIG. 5 is a block diagram of a second embodiment of the present invention;
FIG. 6 is a schematic view of a first heat exchanger assembly according to a second embodiment of the present invention;
FIG. 7 is a schematic front view of a first heat exchanger assembly according to a second embodiment of the present invention;
FIG. 8 is a schematic rear view of a first heat exchanger assembly according to a second embodiment of the present invention;
FIG. 9 is a schematic diagram of a second heat exchanger according to an embodiment of the present invention;
FIG. 10 is a schematic side view of a second heat exchanger according to an embodiment of the present invention;
FIG. 11 is a flow chart of a first embodiment of the present invention;
FIG. 12 is a flow chart of a second embodiment of the present invention;
FIG. 13 is a flow chart of water level control of the water storage box in the second embodiment of the invention;
fig. 14 is a schematic structural view of a refrigerator installation heat dissipation system according to an embodiment of the present invention;
FIG. 15 is a table showing the comparison of the values of the environmental temperatures T2 and Tk in the embodiment of the present invention;
FIG. 16 is a table showing the comparison of values of the environmental temperature T2 and Tg in the embodiment of the present invention;
1. a first heat exchanger assembly;
11. a first heat exchanger; 12. a water storage box; 14. a spray head; 15. a liquid level sensor;
111. a cooling water inlet; 112. a cooling water outlet; 121. a refrigerant inlet; 122. a refrigerant outlet;
2. a second heat exchanger;
21. a back plate; 22. a flat tube; 23. a cooling water outlet temperature sensor;
3. and (3) a water pump.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The principles and structures of the present invention are described in detail below with reference to the drawings and the examples.
The existing embedded refrigerator products in the market all adopt forced convection heat dissipation, and the back of the embedded refrigerator clings to a wall, so that heat dissipation can be only carried out from the top or bottom of the front of the refrigerator. The top heat dissipation air duct is long, the wind resistance is large, and the high-air-quantity centrifugal fan needing to be selected sends out wind from the compressor bin; the bottom heat dissipation space is little, and wind channel assembly requirement is high, and the radiating effect is poor. In this regard, the invention provides a heat dissipation system, which replaces the original condenser of the refrigerator by arranging the first heat exchanger component, and simultaneously assists the first heat exchanger component to dissipate heat by the second heat exchanger, so that the heat dissipation efficiency of the refrigerator is improved.
As shown in fig. 1, 2, 6 and 14, the heat dissipation system provided by the present invention specifically includes: the refrigerator cooling system comprises a first heat exchanger component 1, a second heat exchanger 2 and a water pump 3, wherein the first heat exchanger component 1 is arranged in a compressor bin of the refrigerator, the first heat exchanger component 1 is provided with a refrigerant inlet 111 and a refrigerant outlet 112, the refrigerant inlet 111 is connected with an exhaust pipe of the refrigerator, the refrigerant outlet 112 is connected with an anti-condensation pipe (namely, the original condenser refrigerant inlet and outlet connection mode of the refrigerator), and meanwhile, the first heat exchanger component 1 is also connected with a return pipeline and a conveying pipeline for conveying cooling water to the first heat exchanger component 1 to cool the refrigerant flowing through the first heat exchanger component; the first heat exchanger is attached to the wall surface of the back of the refrigerator, the inlet and the outlet of the first heat exchanger are respectively connected with a conveying pipeline and a backflow pipeline, cooling water is received, heat of the cooling water is transferred to the wall surface, and the water pump conveys the cooling water of the first heat exchanger assembly to the second heat exchanger through the conveying pipeline for cooling.
According to the refrigerator, the first heat exchanger component is arranged to replace an original condenser of the refrigerator, and the second heat exchanger which is attached to the wall surface and used for cooling is arranged corresponding to the first heat exchanger component, so that cooling water can return to the first heat exchanger component by utilizing gravity after being pumped to the top of the second heat exchanger; the water pump selects the heat dissipation theory calculation of the refrigerator in the design stage, and the small-sized simple water pump with the weight of 2-5W can cover all working conditions of the refrigerator.
The specific principle is as follows: under the cooling working condition of the refrigerator, the specific heat capacity (4.2 kJ/kg. DEG C) of water is 4 times that of air (1.005 kJ/kg. DEG C), and the heat conductivity coefficient (0.65W/m.K) of water is far greater than that of air (0.03W/m.K). The heat conductivity of the wall surface is different to a certain extent according to the different wall surface materials, but is between 0.8 and 1.0W/m.K, the heat dissipation capacity of the refrigerator is small, and the wall surface can be regarded as a constant temperature vapor chamber which is infinite and is not influenced by the heat dissipation of the refrigerator. The cold water flows in the first heat exchanger component in the reverse direction with the high-temperature refrigerant flowing out of the refrigerator compressor, after full heat exchange, the water pump pumps the hot water into the second heat exchanger to exchange heat with the low-temperature wall surface, and the exchanged cold water flows back to the second heat exchanger through gravity to form circulation.
In the first embodiment, as shown in fig. 1 to 4, the first heat exchanger component is a plate heat exchanger, the refrigerant flowing out of the compressor exhaust pipe passes through the refrigerant inlet and outlet of the plate heat exchanger, the return pipe is connected to the cooling water inlet 121 of the plate heat exchanger, the delivery pipe is connected to the cooling water outlet 122 of the plate heat exchanger, and the direction of the refrigerant flowing out of the compressor exhaust pipe is opposite to the direction of the cooling water flowing through the first heat exchanger component, so as to improve the heat exchange efficiency.
The plate heat exchanger has simple structure and simple pipeline connection mode, and can enable the refrigerant and the cooling water to exchange heat rapidly.
In a second embodiment, as shown in fig. 5 to 8, the first heat exchanger assembly specifically includes: the refrigerator comprises a water storage box 12 and a micro-channel heat exchanger 11, wherein the water storage box 12 is arranged in a compressor cavity of the refrigerator, the water storage box and a compressor in the compressor cavity are arranged on a chassis side by side, the micro-channel heat exchanger 11 is directly arranged in the water storage box, and a refrigerant inlet and a refrigerant outlet of the micro-channel heat exchanger are respectively connected with a compressor exhaust pipe and an anti-condensation pipe; the water pump 3 is placed in one side in the retaining box 12, and the water pump 3 is connected pipeline and is used for exporting the cooling water of retaining box, and retaining box connection return line receives the cooling water from the second heat exchanger.
The micro-channel heat exchanger is directly soaked in the water storage box to radiate heat, and meanwhile, the water storage box and the second heat exchanger radiate heat in a circulating way, and the water pump is directly soaked in the water storage box, so that the water pump fault caused by overheat operation of the water pump is avoided.
The water supply pipeline of the water storage box specifically comprises a defrosting water pipeline of the refrigerator and an external water supply pipeline, so that the water storage box is ensured to have enough water quantity for heat dissipation circulation.
The water storage box is also provided with the spray head 14, the water spray port of the spray head 14 is aligned with the upper half part of the compressor, and when the water storage box 12 is excessively filled with water, cooling water can be directly sprayed to the compressor for cooling, so that the heat dissipation efficiency of the compressor is improved.
In a specific embodiment, the water pump 3 may adopt a side suction type water pump with a filtering function, and meanwhile, a water level sensor is arranged in the water pump to detect the water amount of the water pump, so that the water can be timely known when the water is too much or too little in the water storage box.
The embodiment has the advantages of simple assembly, low requirement on the pipeline cleanliness of the ground source heat radiation system, stable temperature and easy continuous operation when the water pump is immersed in water, and also meets the requirements of defrosting water treatment of the refrigerator; when the cooling water in the water box is too much, the cooling water can be sprayed on the compressor to cool the compressor, and the cooling water box is recommended to be applied to refrigerator products with fixed water sources.
In a specific embodiment, the second heat exchanger adopts a plate-tube heat exchanger, specifically includes a back plate 21 and a flat tube 22, the back plate 21 and the flat tube 22 are specifically aluminum back plates, and the flat tube also adopts aluminum flat tubes. The flat tube is formed by pressing a coil, and the ratio of the length to the width of the section of the flat tube is 2:1.
In addition, in order to facilitate the control of the water pump, as shown in fig. 2, the refrigerant outlet of the first heat exchanger assembly is provided with a condensation temperature sensor 17, as shown in fig. 9, the cooling water outlet of the second heat exchanger is provided with a cooling water temperature sensor 23, the temperature of the condensation temperature sensor is a condensation outlet temperature T1, the temperature detected by the cooling water temperature sensor is a cooling water outlet temperature T3, and an environmental temperature sensor for detecting an environmental temperature T2 is further provided.
The invention also provides a control method of the heat dissipation system, which comprises the following steps:
acquiring a set value Tk and a set value Tg corresponding to the current environmental temperature T2 according to the current environmental temperature T2;
detecting a condensation outlet temperature T1 of a refrigerant outlet of the first heat exchanger assembly, and detecting a cooling water outlet temperature T3 of a second heat exchanger connected with a return pipeline;
and controlling the switch of the water pump according to the condensation outlet temperature T1, the set value Tk and the set value Tg, and controlling the running gear of the water pump according to the difference value between the condensation outlet temperature T1 and the cooling water outlet temperature T3.
The greater the corresponding ambient temperature of the ambient temperature T2, the higher the corresponding set value Tk, and the higher the set value Tg. The set value Tk is the starting value of the water pump, and the set value Tg is the closing value of the water pump.
As shown in the tables of fig. 15 and 16, the ambient temperature T2 is: t2 is more than or equal to 18 and less than 23, and the corresponding value range of Tk is (T2+6; 26); if the ambient temperature T2 is 18, tk may be 24, 25, 26, etc.
The ambient temperature T2 is: t2 is more than or equal to 18 and less than 23, and the corresponding Tg value range is (T2+2; 22); the ambient temperature T2 is 18, i.e. Tg may be 20, 21, 22, etc.
In the first embodiment, the switch for controlling the water pump according to the condensation outlet temperature T1 and the set value Tk and the set value Tg is specifically:
judging whether the condensation outlet temperature T1 is greater than or equal to a set value Tk;
if yes, starting a water pump, cooling by cooling water, wherein the water pump runs for an initial period of time in a high-grade mode, and meanwhile, C=0;
if not, returning to the step of detecting the ambient temperature T2 again after waiting for the preset waiting time period, and determining the set value according to the ambient temperature T2.
The set value Tk and the set value Tg are changed according to the ambient temperature, the temperature of the cooling water is related to the ambient temperature, and if the temperature of the refrigerant outlet of the first heat exchanger component is too high, namely, the temperature is greater than or equal to the set value Tk, the cooling water has a cooling effect, namely, the water pump is started.
In the further step, after the water pump runs in a high-grade mode for an initial period of time, selecting an operation gear of the water pump according to a preset temperature range in which a difference value between the cooling water outlet temperature T3 and the condensation outlet temperature T1 is located, and running for a second period of time;
determining whether the water pump continues to run or is closed according to the current values of the condensation outlet temperature T1 and C;
if the difference between T3 and T1 is larger, the operation gear of the water pump is higher, otherwise, the difference between T3 and T1 is smaller, the operation gear of the water pump is lower, because the heat exchange space is larger when the difference is larger, the smaller difference indicates that the temperature of cooling water is close to the temperature of the refrigerant outlet of the first heat exchanger component, and the heat dissipation effect of the water pump in high-grade operation is not obvious.
In a specific embodiment, three preset gears of the water pump are arranged in total, namely a low gear, a middle gear and a high gear, wherein three preset difference ranges of T3 and T1 are correspondingly arranged, specifically, T3-T1 corresponding to the high gear is more than or equal to 8 ℃, T3-T1 corresponding to the middle gear is more than or equal to 6 ℃ and less than 8 ℃, and T3-T1 corresponding to the low gear is less than 6 ℃. The second duration may be selected to be 5 minutes.
Determining whether the water pump is running or is turned off according to the current values of T1 and C is specifically as follows:
judging whether T1 is smaller than or equal to Tg, if yes, turning off the water pump;
if not, the value of C is increased by 1, then whether the C after the value is increased is smaller than a preset value is judged, if so, the step of selecting the running gear of the water pump according to the preset temperature range where the difference value between T3 and T1 is located is returned, and if the running gear of the water pump is larger than or equal to the preset value, the water pump is directly turned off.
After the water pump is turned off, the step of determining the set value according to the ambient temperature is returned after the preset waiting time.
Through setting up C, can avoid the operating time overlength of water pump to lead to the water pump overheated and influence the life of water pump.
In the second embodiment, since the water pump is directly immersed in the water storage box, whether the water pump is overheated or not is not considered, specifically as follows:
the switch for controlling the water pump according to the condensation outlet temperature T1, the set value Tk and the set value Tg is specifically as follows:
judging whether the condensation outlet temperature T1 is greater than or equal to Tk;
if yes, starting a water pump, cooling by cooling water, and running the water pump in a high-grade mode for an initial period of time;
if not, returning to the step of detecting the ambient temperature T2 again after waiting for the preset waiting time period, and determining the set value according to the ambient temperature T2.
The set value Tk and the set value Tg are changed according to the ambient temperature, and the cooling water temperature is related to the ambient temperature, if the temperature of the refrigerant outlet of the first heat exchanger component is too high, namely, is greater than or equal to the set value Tk, the cooling water is required to be cooled, namely, the water pump is started.
In the further step, after the water pump runs in a high-grade mode for an initial period of time, selecting an operation gear of the water pump according to a preset temperature range in which a difference value between the cooling water outlet temperature T3 and the condensation outlet temperature T1 is located, and running for a second period of time;
determining whether the water pump continues to run or is closed according to the current T1;
if the difference between T3 and T1 is larger, the operation gear of the water pump is higher, otherwise, the difference between T3 and T1 is smaller, the operation gear of the water pump is lower, because the heat exchange space is larger when the difference is larger, the smaller difference indicates that the temperature of cooling water is close to the temperature of the refrigerant outlet of the first heat exchanger component, and the heat dissipation effect of the water pump in high-grade operation is not obvious.
In a specific embodiment, three preset gears of the water pump are arranged in total, namely a low gear, a middle gear and a high gear, wherein three preset difference ranges of T3 and T1 are correspondingly arranged, specifically, T3-T1 corresponding to the high gear is more than or equal to 8 ℃, T3-T1 corresponding to the middle gear is more than or equal to 6 ℃ and less than 8 ℃, and T3-T1 corresponding to the low gear is less than 6 ℃. The second duration may be selected to be 5 minutes.
Whether the water pump runs or is turned off is specifically determined according to the current value of T1:
judging whether T1 is smaller than or equal to Tg, if yes, turning off the water pump;
if not, returning to the step of selecting the running gear of the water pump according to the preset temperature range where the difference value between T3 and T1 is located.
After the water pump is turned off, the step of determining the set value according to the ambient temperature is returned after the preset waiting time.
Through setting up C, can avoid the operating time overlength of water pump to lead to the water pump overheated and influence the life of water pump.
In the second embodiment, the method specifically further comprises the step of controlling water adding of the water storage box or water spraying of the spray head according to the water level of the water storage box and the working condition of the refrigerator.
The method comprises the following steps: when the water level of the water storage box is larger than a preset low water level and smaller than or equal to a preset high water level, judging whether the refrigerator is in a defrosting period or a recovery period, if so, opening a spray head to cool the compressor, if not, judging whether the compressor is overheated, if so, controlling the water storage box to supplement water to the maximum water amount, and then opening the spray head, otherwise, maintaining the current state.
When the water level of the water storage box is larger than a preset high water level, directly opening the spray head to reduce the water level;
when the water level of the water storage box is smaller than or equal to a preset low water level, judging whether the refrigerator is in a defrosting period or a recovery period; if yes, water is fed into the water supply pipeline to reach a preset low water level; if not, judging whether the compressor is overheated, if so, controlling the water storage box to supplement water to a preset high water level, opening the spray head, and if not, adding the water storage box to the preset safe water level.
Hl: the low water level is preset, so that the heat dissipation, defrosting and recovery period water level of the condenser can be guaranteed.
Hm: and presetting a safe water level, namely a non-defrosting water level and a recovery period water level.
Hh: the high water level is preset, and the water level can be reached only after defrosting.
According to the embodiment, by introducing water level control, large amount of frost water in defrosting and recovery periods is prevented from flowing into the water storage box, water in the water storage box overflows, the phenomenon that the water in the water storage box is insufficient in heat dissipation system circulation is avoided, meanwhile, the temperature of the shell of the compressor is monitored, and when the temperature of the shell of the compressor is too high, the spray head sprays cooling water to the upper half part of the shell of the compressor in a mist mode, and the temperature of the compressor is reduced.
As shown in fig. 14, the present invention also proposes a refrigerator using the above-mentioned heat dissipation system.
The condenser of the refrigerator is replaced by the first heat exchanger component of the heat radiation system, and the second heat exchanger is arranged on the wall body on the back of the refrigerator, and the refrigerator is provided with other necessary parts, such as a controller, a compressor and the like, so as to realize the functions of the refrigerator, and the details are omitted.
It is noted that the above-mentioned terms are used merely to describe specific embodiments, and are not intended to limit exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (14)
1. A heat dissipation system, comprising:
the first heat exchanger component is arranged in a compressor cavity of the refrigerator and exchanges heat with high-temperature refrigerant flowing out of an exhaust pipe of the compressor through cooling water;
the second heat exchanger is attached to the wall surface of the back of the refrigerator and is connected with a return pipeline to convey cooling water to the first heat exchanger;
and the water pump is used for conveying the cooling water of the first heat exchanger assembly to the second heat exchanger through a conveying pipeline.
2. The heat dissipating system of claim 1, wherein the first heat exchanger assembly is a plate heat exchanger, the refrigerant flowing out of the compressor bleed line passes through the refrigerant inlet and outlet of the plate heat exchanger, the return line is connected to the cooling water inlet of the plate heat exchanger, and the delivery line is connected to the cooling water outlet of the plate heat exchanger.
3. The heat removal system of claim 1, wherein the first heat exchanger assembly comprises: the device comprises a water storage box of the compressor cavity and a micro-channel heat exchanger arranged in the water storage box, wherein the refrigerant flowing out of the compressor exhaust pipe passes through a refrigerant inlet and a refrigerant outlet of the micro-channel heat exchanger, a water pump is arranged in the water storage box and conveys cooling water in the water storage box to the second heat exchanger through a conveying pipeline, and the water storage box is connected with a backflow pipeline.
4. The heat dissipating system of claim 3 wherein said reservoir further mounts a spray head having a spray jet aligned with an upper half of said compressor.
5. The heat dissipating system of claim 3, wherein the water supply pipe of the water storage box comprises a defrosting water pipe of a refrigerator and an external water supply pipe.
6. The heat removal system of claim 1, wherein the second heat exchanger is a tube sheet heat exchanger.
7. A control method of a heat dissipation system, characterized by using the heat dissipation system according to any one of claims 1 to 6, comprising the steps of:
acquiring a set value Tk and a set value Tg corresponding to the current environment temperature T2;
detecting a condensation outlet temperature T1 of a refrigerant outlet of the first heat exchanger assembly, and detecting a cooling water outlet temperature T3 of the second heat exchanger;
and controlling the switch and the running gear of the water pump according to the condensation outlet temperature T1 and the cooling water outlet temperature T3.
8. The method for controlling a heat dissipating system according to claim 7, wherein controlling the water pump on and off and the operating gear according to the condensation outlet temperature T1 and the cooling water outlet temperature T3 specifically comprises:
when the condensation outlet temperature T1 is greater than or equal to a set value Tk, starting the water pump, controlling the water pump to run for an initial period of time in a preset high-grade mode, and setting C=0;
selecting an operation gear of the water pump according to a preset temperature range in which a difference value between the cooling water outlet temperature T3 and the condensing outlet temperature T1 is located, and operating for a second duration;
and determining whether the water pump continues to run or is closed according to the current values of the condensation outlet temperatures T1 and C.
9. The method of claim 8, wherein determining whether the water pump is continuously operated or turned off according to the current condensation outlet temperatures T1 and C comprises:
if the condensation outlet temperature T1 is larger than the set value Tk;
the value of C is increased by 1, and whether the value of C is larger than or equal to a preset maximum value is judged;
if yes, controlling the water pump to be closed for a preset closing time period, and returning to the step of acquiring a set value Tk and a set value Tg corresponding to the current environment temperature according to the current environment temperature; if not, returning to the step of selecting the operation gear of the water pump according to the preset temperature range where the difference value between the cooling water outlet temperature T3 and the condensation outlet temperature T1 is located.
10. The method for controlling a heat dissipating system according to claim 7, wherein controlling the water pump on and off and the operating gear according to the condensation outlet temperature T1 and the cooling water outlet temperature T3 specifically comprises:
when the condensation outlet temperature T1 is greater than or equal to the set value Tk, starting the water pump, and controlling the water pump to run for an initial period of time in a preset high-grade mode;
selecting an operation gear of the water pump according to a preset temperature range in which a difference value between the cooling water outlet temperature T3 and the condensing outlet temperature T1 is located, and operating for a second duration;
and determining whether the water pump continues to run or is turned off according to the current T1.
11. The method of controlling a heat dissipating system according to claim 7, further comprising the step of: and controlling the water storage box to add water or the spray nozzle to spray water according to the water level of the water storage box and the working condition of the refrigerator to keep the water level of the water storage box.
12. The method for controlling a heat dissipating system according to claim 11, wherein controlling the water tank to be filled with water or the nozzle to spray water according to the water level of the water tank and the working condition of the refrigerator to keep the water level of the water tank comprises:
when the water level of the water storage box is larger than a preset high water level, opening the spray head to reduce the water level;
when the water level of the water storage box is larger than a preset low water level and smaller than or equal to a preset high water level, and the refrigerator is in a defrosting period or a recovery period, a spray head is opened to reduce the water level;
when the water level of the water storage box is smaller than or equal to the preset low water level, and the refrigerator is in a defrosting period or a recovery period, controlling the water storage box to supplement water to the preset low water level.
13. The method of controlling a heat dissipating system according to claim 12, further comprising the step of:
when the water level of the water storage box is larger than the preset low water level and smaller than or equal to the preset high water level or smaller than or equal to the preset low water level, and the refrigerator is not in the defrosting period or the recovery period, the compressor is overheated, the water storage box is controlled to be filled with water to the preset high water level, and then the spray head is opened.
14. A refrigerator comprising the heat dissipation system according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311656215.4A CN117647056A (en) | 2023-12-05 | 2023-12-05 | Heat dissipation system, control method and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311656215.4A CN117647056A (en) | 2023-12-05 | 2023-12-05 | Heat dissipation system, control method and refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117647056A true CN117647056A (en) | 2024-03-05 |
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ID=90047308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311656215.4A Pending CN117647056A (en) | 2023-12-05 | 2023-12-05 | Heat dissipation system, control method and refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117647056A (en) |
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2023
- 2023-12-05 CN CN202311656215.4A patent/CN117647056A/en active Pending
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