CN117366853A - Antifreezing surface cooler - Google Patents
Antifreezing surface cooler Download PDFInfo
- Publication number
- CN117366853A CN117366853A CN202311644049.6A CN202311644049A CN117366853A CN 117366853 A CN117366853 A CN 117366853A CN 202311644049 A CN202311644049 A CN 202311644049A CN 117366853 A CN117366853 A CN 117366853A
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- filling bag
- pipe
- water
- surface cooler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 219
- 238000000034 method Methods 0.000 claims description 13
- 238000000926 separation method Methods 0.000 claims description 10
- 230000002528 anti-freeze Effects 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000001050 lubricating effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 19
- 230000009471 action Effects 0.000 description 14
- 238000007710 freezing Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 238000007599 discharging Methods 0.000 description 7
- 239000002826 coolant Substances 0.000 description 5
- 238000010926 purge Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 238000010408 sweeping Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F17/00—Removing ice or water from heat-exchange apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0243—Header boxes having a circular cross-section
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention belongs to the technical field of surface coolers, in particular to an antifreezing surface cooler, which comprises a frame, wherein a heat exchange tube is arranged in the frame, the end parts of the heat exchange tube are mutually connected through a bent tube to form a heat exchange loop, a water supply pipe and a water return pipe are arranged on the frame, the two ends of the heat exchange loop are respectively connected to the water supply pipe and the water return pipe, a plurality of groups of heat exchange loops are arranged in the frame from top to bottom, and fins are arranged on the heat exchange tube; a filling bag is arranged in the heat exchange loop, an outer joint is arranged on the water supply pipe, one end of the filling bag is connected to the outer joint, and the heat exchange loop is filled after the filling bag is inflated; the invention has simple structure, can empty the liquid in the surface cooler, and reduces the difficulty of liquid medium emptying, thereby avoiding the phenomenon that the liquid remained in the surface cooler is frozen in winter and the pipeline is damaged.
Description
Technical Field
The invention belongs to the technical field of surface coolers, and particularly relates to an antifreezing surface cooler.
Background
The surface cooler is an important heat exchange device in the air conditioning unit, has the effects of refrigeration and heating, and is generally made of aluminum fins and copper tubes which penetrate through the aluminum fins and are bent in a U-shaped detour way. When the surface cooler is used in winter, the cooling medium water in the surface cooler is required to be drained completely, however, as the traditional internal pipeline structure of the surface cooler is arranged in a U-shaped roundabout way, after the cooling medium water is drained in winter, part of cooling medium water still can be stored in the roundabout, so that the pipeline is frozen and burst, in order to improve the heat exchange effect of the surface cooler, the pipeline arrangement complexity in the surface cooler can be correspondingly increased, and as the pipeline arrangement structure complexity is increased, the difficulty of draining the cooling medium water in the pipeline can be increased, and the cooling medium water can be left.
Disclosure of Invention
In order to make up for the defects of the prior art, the liquid in the surface cooler is emptied, and the difficulty of emptying the liquid medium is reduced, so that the phenomenon that the liquid medium remained in the surface cooler is frozen in winter and a pipeline is damaged due to the fact that the liquid remained in the surface cooler is frozen is avoided.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to an antifreezing surface cooler, which comprises a frame, wherein a heat exchange tube is arranged in the frame, the end parts of the heat exchange tube are connected with each other through an elbow to form a heat exchange loop, a water supply pipe and a water return pipe are arranged on the frame, the two ends of the heat exchange loop are respectively connected to the water supply pipe and the water return pipe, a plurality of groups of heat exchange loops are arranged in the frame from top to bottom, and fins are arranged on the heat exchange tube;
the heat exchange loop internally mounted has the filling bag, install the external joint on the delivery pipe, the one end of filling the bag is connected to the external joint, fill the back and be full of the heat exchange loop in the filling bag, the one end thickness that the filling bag is close to the external joint is less than the other end of filling the bag.
Preferably, the surface of the filling bag is uniformly provided with bulges which are annular, the cross section of each bulge is semicircular, and the height of each bulge is smaller than the wall thickness of the filling bag;
the distance between the bulges is inversely proportional to the wall thickness of the filling bag, and the bulges and the filling bag are made of the same material.
Preferably, the bent pipe is a metal corrugated pipe, and the metal corrugated pipe has elasticity.
Preferably, a lubricating layer is coated on the inner wall of the heat exchange loop, and the lubricating layer is a polytetrafluoroethylene coating.
Preferably, the heat exchange pipes in the heat exchange loop are distributed from high to low in the direction from the water supply pipe to the water return pipe, and the bent pipes are obliquely arranged.
Preferably, the frame is provided with a water collecting pipe, the water collecting pipe is positioned at one end of the frame far away from the water supply pipe, the water collecting pipe is mutually communicated with the heat exchange pipe through a three-way connecting pipe, the lower end of the water collecting pipe is provided with a water discharging pipe, the water collecting pipe is provided with a valve, the frame is provided with a temperature sensor, and the controller of the surface cooler still controls the opening and closing of the valve according to data of the temperature sensor.
Preferably, a protective shell is arranged on the frame, a motor is arranged in the protective shell, the motor is positioned above the water collecting pipe,
install the connecting rod in the collector pipe, through drive belt interconnect between the upper end of connecting rod and the motor, install the dead lever on the connecting rod, install the separation blade on the dead lever, the separation blade is the inner wall of arc and laminating collector pipe, the separation blade seals the junction of tee bend connecting pipe on the collector pipe.
Preferably, an elastic layer is arranged on the baffle plate, and the elastic layer is positioned between the baffle plate and the inner wall of the water collecting pipe.
The beneficial effects of the invention are as follows:
1. according to the antifreezing surface air cooler, the replacement heat pipe and the filling bag are arranged, when the water in the surface air cooler is emptied, the space in the heat exchange pipe is filled by the expanded filling bag, so that the residual water is extruded and pushed, the residual water can be easily discharged from the surface air cooler, the emptying difficulty of the residual liquid in the surface air cooler is reduced, the residual water is not required to be cleaned in a high-pressure air purging mode, the running and maintenance cost of equipment is reduced, and excessive external impurities are prevented from being brought into a pipeline in the surface air cooler in the purging process.
2. According to the antifreezing surface cooler, the bent pipe, the water collecting pipe, the connecting rod, the baffle plate, the motor and the three-way connecting pipe are arranged, so that the heat exchange pipe and the bent pipe can be obliquely arranged, water in the surface cooler is conveniently discharged, the heat exchange pipe is communicated with the water collecting pipe through the upper cylinder connecting pipe, the water remained at the detour position of a pipeline can be promoted to be discharged, the quantity of the water remained in the surface cooler is reduced, and when the surface cooler works normally, the water collecting pipe is disconnected with the heat exchange pipe by the baffle plate, so that the water collecting pipe is prevented from influencing the flow of the water in the heat exchange pipe and a heat exchange loop, and further the normal work of the surface cooler is influenced.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a front view of a surface cooler of the present invention at a first view angle;
FIG. 2 is a front view of a second view of the surface cooler of the present invention;
FIG. 3 is a schematic view of the structure of a water collecting pipe in the surface cooler of the present invention;
FIG. 4 is a schematic view of a baffle in a surface cooler according to the present invention;
FIG. 5 is a cross-sectional view of a heat exchange circuit in a surface cooler of the present invention;
FIG. 6 is a schematic view of the structure of a filling bag in the surface cooler of the present invention;
FIG. 7 is an enlarged view of a portion of FIG. 1 at A;
FIG. 8 is an enlarged view of a portion of FIG. 2 at B;
in the figure: the heat exchanger comprises a frame 1, a water supply pipe 11, a water return pipe 12, an outer joint 121, fins 2, a heat exchange pipe 3, an elbow pipe 31, a water collecting pipe 4, a connecting rod 41, a baffle plate 42, a fixing rod 421, an elastic layer 422, a three-way connecting pipe 43, a motor 44, a protective shell 441, a driving belt 442, a water discharge pipe 5, a filling bag 6 and a protrusion 61.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1 to 8, the antifreeze surface cooler of the present invention comprises a frame 1, wherein a heat exchange tube 3 is installed in the frame 1, the ends of the heat exchange tube 3 are connected with each other through a bent tube 31 to form a heat exchange loop, a water supply pipe 11 and a water return pipe 12 are installed on the frame 1, two ends of the heat exchange loop are respectively connected to the water supply pipe 11 and the water return pipe 12, a plurality of groups of heat exchange loops are arranged in the frame 1 from top to bottom, and fins 2 are installed on the heat exchange tube 3;
the inside of the heat exchange loop is provided with a filling bag 6, the water supply pipe 11 is provided with an outer joint 121, one end of the filling bag 6 is connected to the outer joint 121, the filling bag 6 is filled with the heat exchange loop after being inflated, and the thickness of one end of the filling bag 6, which is close to the outer joint 121, is smaller than that of the other end of the filling bag 6;
when the air conditioner works, the return pipe 12 is opened, so that water in the heat exchange loop in the surface air cooler is discharged, then the filling bag 6 in the heat exchange loop is inflated through the air source or the air pump connected to the outer joint 121, so that the filling bag 6 is gradually expanded and fills the space in the heat exchange loop, the water remained in the heat exchange loop is extruded in the expansion process of the filling bag 6, the water in the heat exchange loop is fully discharged, the phenomenon that the water remained in the heat exchange loop is frozen when the air temperature is low in winter is avoided, the pipeline in the surface air cooler bursts, the normal use of the surface air cooler is influenced, and then after the residual water is fully discharged, the air in the filling bag 6 is released, so that the filling bag 6 is restored to the original shape;
meanwhile, since the entire filling bag 6 is in a long strip shape, and the thickness of the filling bag 6 gradually increases from one end close to the outer joint 121, when the filling bag 6 is inflated from one end close to the outer joint 121, under the condition that the air pressure at all positions in the filling bag 6 is the same, the thickness of the side wall of the filling bag 6 at one end close to the outer joint 121 is relatively small, so that the air pressure which can be born by the end of the filling bag 6 close to the outer joint 121 is relatively small, and as external air is gradually filled into the filling bag 6 from the outer joint 121, the filling bag 6 gradually begins to expand from one end close to the outer joint 121 to the other end, meanwhile, after the end of the filling bag 6 close to the outer joint 121 is expanded and contacts the inner wall of the heat exchange circuit, the expanded area on the filling bag 6 is limited, and the unexpanded area on the filling bag 6 is expanded under the action of the continuously filled air until the entire filling bag 6 is expanded and fills the inner space of the whole heat exchange circuit;
meanwhile, when the filling bag 6 is gradually expanded, the expanded part of the filling bag 6 can generate extrusion and pushing effects on residual water in the heat exchange loop, so that the residual water can move along the heat exchange loop until the residual water enters the interior of the water return pipe 12 and is discharged, and the filling bag 6 is prevented from being synchronously expanded everywhere through the gradual expansion of the filling bag 6, so that the residual water in the heat exchange loop is blocked in a pipeline by the expanded filling bag 6, the residual water cannot be discharged, and the pipeline is frozen when the air temperature is low, and bursts;
meanwhile, in the actual use process, the small support with elasticity can be arranged on the outer wall of the filling bag 6, so that the filling bag 6 is positioned in the middle position inside the heat exchange loop under the action of the small support, and friction between the filling bag 6 inside the heat exchange loop and the inner wall of the heat exchange loop is avoided or reduced when the surface cooler normally operates, and the service life of the filling bag is influenced;
meanwhile, the residual water in the heat exchange loop of the filling bag 6 is utilized to be discharged, the discharging effect can be improved, the residual water in the heat exchange loop is avoided or reduced, in addition, when the gas filled into the filling bag 6 cannot enter the heat exchange loop, the residual water in the heat exchange loop cannot be driven by the gas flow to be directly purged, impurities such as dust and the like outside can be brought into the heat exchange loop through the gas flow when the residual water is cleaned, the subsequent normal use of the surface cooler is influenced, meanwhile, the phenomenon that the gas flow is directly used for purging and cleaning the residual water can be avoided, and the residual water in the heat exchange loop can be driven only when the path length and the curvature of the 3 paths of the heat exchange tube are increased, and the purging gas flow can need higher pressure and flow speed, so that the residual water in the part of the heat exchange loop cannot be driven when the purging gas flow speed or the pressure is relatively low, and still remains in the heat exchange loop, and further the pipe is frozen when the temperature is low, so that damage is caused.
As one embodiment of the present invention, the surface of the filling bag 6 is uniformly provided with protrusions 61, the protrusions 61 are annular, the cross section of the protrusions 61 is semicircular, and the height of the protrusions 61 is smaller than the wall thickness of the filling bag 6;
the distance between the bulges 61 is inversely proportional to the wall thickness of the filling bag 6, and the bulges 61 and the filling bag 6 are made of the same material;
because the distance between the protrusions 61 is inversely proportional to the wall thickness of the filling bag 6, and the wall thickness of the filling bag 6 gradually increases from one end close to the outer joint 121 to one end far away from the outer joint 121, therefore, the distance between the protrusions 61 is relatively larger at one end close to the outer joint 121 on the filling bag 6, meanwhile, the protrusions 61 arranged on the filling bag 6 are made of the same material as the filling bag 6, which is equivalent to increasing the wall thickness of the corresponding position of the filling bag 6, namely increasing the internal pressure required by the expansion of the side wall of the filling bag 6, so that the internal pressure required by the expansion of the corresponding region on the filling bag 6 is gradually increased along with the decrease of the distribution distance between the protrusions 61, so as to further limit the expansion process of the filling bag 6, and ensure that the region close to the outer joint 121 on the filling bag 6 can bear relatively smaller internal acting force, namely further ensure that the filling bag 6 gradually begins to expand from the position close to the outer joint 121, so as to squeeze and push the residual water in the heat exchange loop, fully drain the residual water in the heat exchange loop, and the antifreezing performance of the surface cooler at low temperature is improved;
meanwhile, the cross section of the bulge 61 is semicircular, and the height of the bulge 61 is smaller than the wall thickness of the filling bag 6, so that after the filling bag 6 expands, the filling bag 6 and the bulge 61 deform, and are fully attached to and contacted with the inner wall of the heat exchange loop, even the bulge 61 deforms under the action of the internal pressure of the filling bag 6, so that the cross section of the bulge 61 tends to be more flat, in the practical application process, the connection part between the bulge 61 and the filling bag 6 is connected through a relatively smooth transition area, and when the filling bag 6 expands and is attached to the inner wall of the heat exchange loop, the connection part between the filling bag 6 and the bulge 61 deforms, and is attached to the inner wall of the heat exchange loop, so that the possibility of forming a small gap between the inner wall of the heat exchange loop and the area, close to the bulge 61, on the outer wall of the filling bag 6 is avoided or reduced, and the water left in the bulge 61 is prevented from being left in the small gap when the filling bag 6 pushes the residual water in the heat exchange loop, so that the water left in the bulge 61 affects the drainage effect of the residual water in the heat exchange loop;
meanwhile, as the bulge 61 is positioned on the surface of the filling bag 6, when the filling bag 6 gradually begins to expand, the bulge 61 firstly contacts with the inner wall of the heat exchange circuit, at the moment, the bulge 61 can squeeze and crush a small amount of scale attached to the inner wall of the heat exchange circuit, and then when the surface cooler is continuously used subsequently, the crushed scale is carried out along with water flow, so that excessive accumulation of scale in the heat exchange circuit is avoided, and the normal work of the heat exchange circuit is influenced;
meanwhile, the bulges 61 arranged on the surface of the filling bag 6 enable the surface of the filling bag 6 to be relatively rough, so that the inflated filling bag 6 is contacted with the inner wall of the heat exchange loop, the friction force between the inflated filling bag 6 and the inner wall of the heat exchange loop is increased, the position of the filling bag 6 in the heat exchange loop is relatively fixed, the expansion and contraction of the filling bag 6 under the elastic action in the inflation process of the filling bag 6 are reduced, and excessive friction between the filling bag 6 and the inner wall of the heat exchange loop is caused, so that the filling bag 6 is damaged.
As an embodiment of the present invention, the elbow 31 is a metal bellows, and the metal bellows has elasticity;
the heat exchange pipes 3 in the surface cooler are connected through the bent pipes 31 supported by the metal corrugated pipes, so that the bent pipes 31 are flexible, residual water in the heat exchange loop cannot be completely discharged, when the residual water is gathered to one or more bent pipes 31 under the action of gravity or external vibration, the bent pipes 31 can be stretched when the gathered water is frozen, thereby providing a space for volume expansion of the residual water during freezing, reducing the possibility of the bent pipes 31 being cracked by ice with increased volume when the residual water is frozen, improving the anti-freezing performance of the surface cooler, and ensuring the normal use of the surface cooler.
As one embodiment of the invention, a lubricating layer is coated on the inner wall of the heat exchange loop, and the lubricating layer is a polytetrafluoroethylene coating;
because the filling bag 6 is installed in the heat exchange loop, and the filling bag 6 is not accurately fixed at a certain position in the heat exchange loop, in addition, if a small elastic bracket is installed on the outer wall of the filling bag 6, so that the filling bag 6 is relatively fixed at the middle position in the heat exchange loop, the part of the filling bag 6 between two adjacent small brackets is still in an inaccurate fixed state, when the surface cooler works normally, water flowing in the heat exchange loop can impact the filling bag 6, so that the filling bag 6 shakes back and forth in the heat exchange loop, the surface of the filling bag 6 can frequently contact the inner wall of the heat exchange loop, friction damage is caused on the surface of the filling bag 6, the service life of the filling bag 6 is influenced, and at the moment, friction force exists between the two parts of the filling bag 6 and the inner wall of the heat exchange loop when the inner wall of the heat exchange loop is contacted, so that the surface of the filling bag 6 is protected, and the service life of the filling bag 6 is prevented from being influenced normally;
meanwhile, when the filling bag 6 is expanded and attached to the inner wall of the heat exchange loop, acting force existing between the filling bag 6 and the bulge 61 on the filling bag 6 and the inner wall of the heat exchange loop is static friction force, under the action of the pressure inside the filling bag 6, the static friction force of the filling bag 6 and the bulge 61 relative to the inner wall of the heat exchange loop is relatively large, and meanwhile, the arranged bulge 61 can relatively fix the position of the filling bag 6 when the filling bag is expanded and attached to the inner wall of the heat exchange loop, so that the movement and the expansion of the filling bag 6 are avoided or reduced, the effect of protecting the surface of the filling bag 6 is further improved, and the possibility that the surface of the filling bag 6 is damaged by friction is reduced.
As one embodiment of the invention, the heat exchange pipes 3 in the heat exchange circuit are distributed from high to low from the water supply pipe 11 to the water return pipe 12, and the bent pipe 31 is obliquely arranged;
the heat exchange pipes 3 in the heat exchange loop are distributed from high to low, so that the positions of the heat exchange pipes 3 connected to the water return pipes 12 are low relative to the positions of the heat exchange pipes 3 connected to the water supply pipes 11, and the bent pipes 31 are obliquely installed, the heat exchange pipes 3 are connected to form the heat exchange loop, when water in the surface air cooler is discharged, the water in the heat exchange loop can conveniently flow into the water return pipes 12 under the action of gravity, and then is discharged from the water return pipes 12, the quantity of water remained in the heat exchange loop is reduced, when the temperature is reduced, the phenomenon that the residual water in the heat exchange loop freezes, the pipeline bursts and bursts is caused, the normal use of the surface air cooler is influenced, meanwhile, the heat exchange pipes 3 are obliquely installed from high to low, the bent pipes 31 are obliquely installed and connected with the heat exchange pipes 3, the residual water is promoted to be discharged from the heat exchange loop when the filling bag 6 is expanded, the discharging effect of the residual water is improved, the residual quantity of the water in the heat exchange loop is reduced, and the anti-freezing performance of the surface air cooler is ensured.
As one embodiment of the present invention, a water collecting pipe 4 is installed on the frame 1, the water collecting pipe 4 is located at one end of the frame 1 far away from the water supply pipe 11, the water collecting pipe 4 is mutually communicated with the heat exchange pipe 3 through a three-way connecting pipe 43, a drain pipe 5 is installed at the lower end of the water collecting pipe 4, a valve is installed on the water collecting pipe 4, a temperature sensor is arranged on the frame 1, and a controller of the surface cooler controls the valve to be opened and closed according to the data of the temperature sensor;
the temperature sensor arranged on the frame 1 is used for detecting the temperature of the environment where the surface cooler is located, when the temperature sensor detects that the temperature is too low, the controller used for controlling the surface cooler to work can control the surface cooler to stop working after receiving the data detected by the temperature sensor when the temperature sensor detects that the water in the surface cooler is easy to start to freeze, meanwhile, the valves arranged on the water return pipe 12 and the water collecting pipe 4 are controlled to be opened, so that the water in the heat exchange loop starts to be discharged, and after the water in the heat exchange loop is discharged, the controller controls an external air source or an air pump to inflate the filling bag 6, so that the water remained in the heat exchange loop is fully discharged, and the good anti-freezing performance of the surface cooler is ensured;
meanwhile, the three-way connecting pipe 43 is communicated with the heat exchange pipe 3, and the connecting point of the three-way connecting pipe 43 on the heat exchange pipe 3 is close to the connecting point of the elbow pipe 31 on the heat exchange pipe 3, so that water discharge can be more effectively promoted when water in a heat exchange loop is discharged, and part of water remained at the elbow pipe 31 enters the water collecting pipe 4 and is discharged out of the surface cooler, meanwhile, water can enter the water collecting pipe 4 when water in the horizontally placed heat exchange pipe 3 is discharged through the water collecting pipe 4, and then is discharged from the drain pipe 5, the difficulty of water discharge in the heat exchange pipe 3 is reduced, the effect and efficiency of water in the air-discharging surface cooler are improved, and good anti-freezing performance of the surface cooler is ensured.
As an embodiment of the invention, the frame 1 is provided with a protective shell 441, a motor 44 is arranged in the protective shell 441, the motor 44 is positioned above the water collecting pipe 4,
a connecting rod 41 is installed in the water collecting pipe 4, the upper end of the connecting rod 41 is connected with a motor 44 through a transmission belt 442, a fixed rod 421 is installed on the connecting rod 41, a baffle piece 42 is installed on the fixed rod 421, the baffle piece 42 is arc-shaped and is attached to the inner wall of the water collecting pipe 4, and the baffle piece 42 seals the joint of the three-way connecting pipe 43 on the water collecting pipe 4;
the baffle plate 42 is arranged to seal the connection part of each three-way connecting pipe 43 on the water collecting pipe 4, so that when the surface cooler is normally used, the water collecting pipe 4 and the heat exchange pipes 3 in the heat exchange loop are mutually disconnected and isolated, so that the water in the heat exchange loop can flow along the sequence of the water supply pipe 11, the heat exchange loop and the water return pipe 12 in sequence when the surface cooler is normally used, the water collecting pipe 4 is prevented from being communicated with the heat exchange pipes 3 all the time, the heat exchange pipes 3 in the heat exchange loops of different groups are communicated with each other through the water collecting pipe 4, and when the surface cooler is normally used, all or part of water flowing through the heat exchange loops flows through the water collecting pipe 4, the flow path of the water is shortened, and heat exchange between the water and the fins 2 is reduced, so that the normal operation and the heat exchange effect of the surface cooler are affected;
meanwhile, when water in the surface air cooler needs to be discharged, the controller controlling the surface air cooler to work controls the motor 44 to move, drives the connecting rod 41 to rotate, and enables the baffle plate 42 in the water collecting pipe 4 to rotate around the axis, namely the baffle plate 42 leaves the joint of the three-way connecting pipe 43 and the water collecting pipe 4, so that the water collecting pipe 4 is communicated with the heat exchange pipe 3, residual water in a heat exchange loop is convenient to enter the water collecting pipe 4, and finally the surface air cooler is discharged from the water discharging pipe 5, and good anti-freezing performance of the surface air cooler is guaranteed.
As one embodiment of the present invention, the baffle 42 is provided with an elastic layer 422, and the elastic layer 422 is located between the baffle 42 and the inner wall of the water collecting pipe 4;
the leakproofness between baffle and the collector pipe 4 inner wall is improved through the elastic layer 422 that sets up to when making the separation blade 42 carry out the shutoff to the junction of tee bend connecting pipe 43 on collector pipe 4, can guarantee the shutoff effect, avoid having to leak, influence the normal work of surface cooler, simultaneously, set up under the prerequisite of separation blade 42 in collector pipe 4, set up the valve in collector pipe 4 and drain pipe 5 junction or in drain pipe 5 exit, so that when guaranteeing surface cooler normal use, the water in the surface cooler of flowing through can not follow collector pipe 4 and drain pipe 5 department and leak.
The specific working procedure is as follows:
when the air conditioner works, the return pipe 12 is opened, so that water in the heat exchange loop in the surface air cooler is discharged, then the filling bag 6 in the heat exchange loop is inflated through the air source or the air pump connected to the outer joint 121, so that the filling bag 6 is gradually expanded and fills the space in the heat exchange loop, the water remained in the heat exchange loop is extruded in the expansion process of the filling bag 6, the water in the heat exchange loop is fully discharged, the phenomenon that the water remained in the heat exchange loop is frozen when the air temperature is low in winter is avoided, the pipeline in the surface air cooler bursts, the normal use of the surface air cooler is influenced, and then after the residual water is fully discharged, the air in the filling bag 6 is released, so that the filling bag 6 is restored to the original shape;
meanwhile, since the entire filling bag 6 is in a long strip shape, and the thickness of the filling bag 6 gradually increases from one end close to the outer joint 121, when the filling bag 6 is inflated from one end close to the outer joint 121, under the condition that the air pressure at all positions in the filling bag 6 is the same, the thickness of the side wall of the filling bag 6 at one end close to the outer joint 121 is relatively small, so that the air pressure which can be born by the end of the filling bag 6 close to the outer joint 121 is relatively small, and as external air is gradually filled into the filling bag 6 from the outer joint 121, the filling bag 6 gradually begins to expand from one end close to the outer joint 121 to the other end, meanwhile, after the end of the filling bag 6 close to the outer joint 121 is expanded and contacts the inner wall of the heat exchange circuit, the expanded area on the filling bag 6 is limited, and the unexpanded area on the filling bag 6 is expanded under the action of the continuously filled air until the entire filling bag 6 is expanded and fills the inner space of the whole heat exchange circuit;
meanwhile, when the filling bag 6 is gradually expanded, the expanded part of the filling bag 6 can generate extrusion and pushing effects on residual water in the heat exchange loop, so that the residual water can move along the heat exchange loop until the residual water enters the interior of the water return pipe 12 and is discharged, and the filling bag 6 is prevented from being synchronously expanded everywhere through the gradual expansion of the filling bag 6, so that the residual water in the heat exchange loop is blocked in a pipeline by the expanded filling bag 6, the residual water cannot be discharged, and the pipeline is frozen when the air temperature is low, and bursts;
meanwhile, in the actual use process, the small support with elasticity can be arranged on the outer wall of the filling bag 6, so that the filling bag 6 is positioned in the middle position inside the heat exchange loop under the action of the small support, and friction between the filling bag 6 inside the heat exchange loop and the inner wall of the heat exchange loop is avoided or reduced when the surface cooler normally operates, and the service life of the filling bag is influenced;
meanwhile, the water remained in the heat exchange loop of the filling bag 6 is utilized to drain, the draining effect can be improved, the water remained in the heat exchange loop is avoided or reduced, in addition, when the air filled into the filling bag 6 does not enter the heat exchange loop, the air flow is prevented from directly sweeping the heat exchange loop to clean the remained water, impurities such as dust and the like outside can be possibly brought into the heat exchange loop by the air flow, the subsequent normal use of the surface cooler is influenced, meanwhile, when the air flow is directly used for sweeping and cleaning the remained water, the air flow for sweeping needs higher pressure and flow rate along with the increase of the path length and the curvature of the 3-way of the heat exchange tube, the remained water in the heat exchange loop can be driven, when the air flow speed or the air flow for sweeping is relatively low, the remained water in the part of the heat exchange loop can not be driven, and still remains in the heat exchange loop, and further, the air flow is frozen when the air temperature is low, and damage is caused to the pipe;
because the distance between the protrusions 61 is inversely proportional to the wall thickness of the filling bag 6, and the wall thickness of the filling bag 6 gradually increases from one end close to the outer joint 121 to one end far away from the outer joint 121, therefore, the distance between the protrusions 61 is relatively larger at one end close to the outer joint 121 on the filling bag 6, meanwhile, the protrusions 61 arranged on the filling bag 6 are made of the same material as the filling bag 6, which is equivalent to increasing the wall thickness of the corresponding position of the filling bag 6, namely increasing the internal pressure required by the expansion of the side wall of the filling bag 6, so that the internal pressure required by the expansion of the corresponding region on the filling bag 6 is gradually increased along with the decrease of the distribution distance between the protrusions 61, so as to further limit the expansion process of the filling bag 6, and ensure that the region close to the outer joint 121 on the filling bag 6 can bear relatively smaller internal acting force, namely further ensure that the filling bag 6 gradually begins to expand from the position close to the outer joint 121, so as to squeeze and push the residual water in the heat exchange loop, fully drain the residual water in the heat exchange loop, and the antifreezing performance of the surface cooler at low temperature is improved;
meanwhile, the cross section of the bulge 61 is semicircular, and the height of the bulge 61 is smaller than the wall thickness of the filling bag 6, so that after the filling bag 6 expands, the filling bag 6 and the bulge 61 deform, and are fully attached to and contacted with the inner wall of the heat exchange loop, even the bulge 61 deforms under the action of the internal pressure of the filling bag 6, so that the cross section of the bulge 61 tends to be more flat, in the practical application process, the connection part between the bulge 61 and the filling bag 6 is connected through a relatively smooth transition area, and when the filling bag 6 expands and is attached to the inner wall of the heat exchange loop, the connection part between the filling bag 6 and the bulge 61 deforms, and is attached to the inner wall of the heat exchange loop, so that the possibility of forming a small gap between the inner wall of the heat exchange loop and the area, close to the bulge 61, on the outer wall of the filling bag 6 is avoided or reduced, and the water left in the bulge 61 is prevented from being left in the small gap when the filling bag 6 pushes the residual water in the heat exchange loop, so that the water left in the bulge 61 affects the drainage effect of the residual water in the heat exchange loop;
meanwhile, as the bulge 61 is positioned on the surface of the filling bag 6, when the filling bag 6 gradually begins to expand, the bulge 61 firstly contacts with the inner wall of the heat exchange circuit, at the moment, the bulge 61 can squeeze and crush a small amount of scale attached to the inner wall of the heat exchange circuit, and then when the surface cooler is continuously used subsequently, the crushed scale is carried out along with water flow, so that excessive accumulation of scale in the heat exchange circuit is avoided, and the normal work of the heat exchange circuit is influenced;
meanwhile, the bulges 61 arranged on the surface of the filling bag 6 enable the surface of the filling bag 6 to be relatively rough, so that the inflated filling bag 6 and the inner wall of the heat exchange loop are mutually contacted, friction force between the two is increased, the position of the filling bag 6 in the heat exchange loop is relatively fixed, expansion and contraction of the filling bag 6 under the elastic action in the inflation process of the filling bag 6 are reduced, excessive friction between the filling bag 6 and the inner wall of the heat exchange loop is caused, and the filling bag 6 is damaged;
the heat exchange pipes 3 in the surface cooler are connected through the bent pipes 31 supported by the metal corrugated pipes, so that the bent pipes 31 are flexible, residual water in the heat exchange loop cannot be completely discharged, when the residual water is gathered to one or more bent pipes 31 under the action of gravity or external vibration, the bent pipes 31 can be stretched when the gathered water is frozen, thus providing a volume expansion space for the residual water when the water is frozen, reducing the possibility that the bent pipes 31 are cracked by ice with increased volume when the residual water is frozen, improving the anti-freezing performance of the surface cooler, and ensuring the normal use of the surface cooler;
because the filling bag 6 is installed in the heat exchange loop, and the filling bag 6 is not accurately fixed at a certain position in the heat exchange loop, in addition, if a small elastic bracket is installed on the outer wall of the filling bag 6, so that the filling bag 6 is relatively fixed at the middle position in the heat exchange loop, the part of the filling bag 6 between two adjacent small brackets is still in an inaccurate fixed state, when the surface cooler works normally, water flowing in the heat exchange loop can impact the filling bag 6, so that the filling bag 6 shakes back and forth in the heat exchange loop, the surface of the filling bag 6 can frequently contact the inner wall of the heat exchange loop, friction damage is caused on the surface of the filling bag 6, the service life of the filling bag 6 is influenced, and at the moment, friction force exists between the two parts of the filling bag 6 and the inner wall of the heat exchange loop when the inner wall of the heat exchange loop is contacted, so that the surface of the filling bag 6 is protected, and the service life of the filling bag 6 is prevented from being influenced normally;
meanwhile, when the filling bag 6 is expanded and attached to the inner wall of the heat exchange loop, acting force existing between the filling bag 6 and the bulge 61 on the filling bag 6 and the inner wall of the heat exchange loop is static friction force, under the action of the pressure inside the filling bag 6, the static friction force of the filling bag 6 and the bulge 61 relative to the inner wall of the heat exchange loop is relatively large, and meanwhile, the arranged bulge 61 can relatively fix the position of the filling bag 6 when the filling bag 6 is expanded and attached to the inner wall of the heat exchange loop, so that the movement and the expansion of the filling bag 6 are avoided or reduced, the effect of protecting the surface of the filling bag 6 is further improved, and the possibility of friction damage to the surface of the filling bag 6 is reduced;
the heat exchange pipes 3 in the heat exchange loop are distributed from high to low, so that the positions of the heat exchange pipes 3 connected to the water return pipe 12 are low relative to the positions of the heat exchange pipes 3 connected to the water supply pipe 11, and the bent pipes 31 are obliquely arranged, and the heat exchange pipes 3 are connected to form the heat exchange loop, so that when water in the surface air cooler is discharged, the water in the heat exchange loop can conveniently flow into the water return pipe 12 under the action of gravity, and then is discharged from the water return pipe 12, the quantity of water remained in the heat exchange loop is reduced, when the temperature is reduced, the phenomenon that the residual water in the heat exchange loop freezes, the pipeline bursts and bursts to affect the normal use of the surface air cooler is avoided, meanwhile, the heat exchange pipes 3 are obliquely arranged from high to low, and the bent pipes 31 are obliquely arranged and connected with the heat exchange pipes 3, and when the filling bag 6 is expanded, the residual water is promoted to be discharged from the heat exchange loop, the discharging effect of the residual water is improved, the quantity of the water in the heat exchange loop is reduced, and the anti-freezing performance of the surface air cooler is ensured to be good;
the temperature sensor arranged on the frame 1 is used for detecting the temperature of the environment where the surface cooler is located, when the temperature sensor detects that the temperature is too low, the controller used for controlling the surface cooler to work can control the surface cooler to stop working after receiving the data detected by the temperature sensor when the temperature sensor detects that the water in the surface cooler is easy to start to freeze, meanwhile, the valves arranged on the water return pipe 12 and the water collecting pipe 4 are controlled to be opened, so that the water in the heat exchange loop starts to be discharged, and after the water in the heat exchange loop is discharged, the controller controls an external air source or an air pump to inflate the filling bag 6, so that the water remained in the heat exchange loop is fully discharged, and the good anti-freezing performance of the surface cooler is ensured;
meanwhile, the three-way connecting pipe 43 is communicated with the heat exchange pipe 3, and the connecting point of the three-way connecting pipe 43 on the heat exchange pipe 3 is close to the connecting point of the elbow pipe 31 on the heat exchange pipe 3, so that water discharge can be more effectively promoted when water in a heat exchange loop is discharged, part of water remained at the elbow pipe 31 enters the water collecting pipe 4 and is discharged out of the surface cooler, meanwhile, when water in the horizontally placed heat exchange pipe 3 is discharged through the water collecting pipe 4, the water can enter the water collecting pipe 4 and is discharged from the water discharging pipe 5, the difficulty of water discharge in the heat exchange pipe 3 is reduced, the effect and efficiency of water in the air-cooled surface cooler are improved, and good anti-freezing performance of the surface cooler is ensured;
the baffle plate 42 is arranged to seal the connection part of each three-way connecting pipe 43 on the water collecting pipe 4, so that when the surface cooler is normally used, the water collecting pipe 4 and the heat exchange pipes 3 in the heat exchange loop are mutually disconnected and isolated, so that the water in the heat exchange loop can flow along the sequence of the water supply pipe 11, the heat exchange loop and the water return pipe 12 in sequence when the surface cooler is normally used, the water collecting pipe 4 is prevented from being communicated with the heat exchange pipes 3 all the time, the heat exchange pipes 3 in the heat exchange loops of different groups are communicated with each other through the water collecting pipe 4, and when the surface cooler is normally used, all or part of water flowing through the heat exchange loops flows through the water collecting pipe 4, the flow path of the water is shortened, and heat exchange between the water and the fins 2 is reduced, so that the normal operation and the heat exchange effect of the surface cooler are affected;
meanwhile, when water in the surface air cooler needs to be discharged, a controller controlling the surface air cooler to work controls a motor 44 to move to drive a connecting rod 41 to rotate, so that a baffle piece 42 in a water collecting pipe 4 rotates around an axis, namely the baffle piece 42 leaves a joint of a three-way connecting pipe 43 and the water collecting pipe 4, so that the water collecting pipe 4 is communicated with a heat exchange pipe 3, residual water in a heat exchange loop is convenient to enter the water collecting pipe 4, and finally the surface air cooler is discharged from a water discharge pipe 5, and good anti-freezing performance of the surface air cooler is ensured;
the leakproofness between baffle and the collector pipe 4 inner wall is improved through the elastic layer 422 that sets up to when making the separation blade 42 carry out the shutoff to the junction of tee bend connecting pipe 43 on collector pipe 4, can guarantee the shutoff effect, avoid having to leak, influence the normal work of surface cooler, simultaneously, set up under the prerequisite of separation blade 42 in collector pipe 4, set up the valve in collector pipe 4 and drain pipe 5 junction or in drain pipe 5 exit, so that when guaranteeing surface cooler normal use, the water in the surface cooler of flowing through can not follow collector pipe 4 and drain pipe 5 department and leak.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides an antifreezing surface cooler, includes frame (1), install heat exchange tube (3) in frame (1), the tip of heat exchange tube (3) is through return bend (31) interconnect formation heat exchange circuit, install delivery pipe (11) and wet return (12) on frame (1), the both ends of heat exchange circuit are connected to delivery pipe (11) and wet return (12) respectively, be provided with multiunit heat exchange circuit from top to bottom in frame (1), install fin (2) on heat exchange tube (3);
the method is characterized in that: the heat exchange loop internally mounted has filling bag (6), install outer joint (121) on delivery pipe (11), the one end of filling bag (6) is connected to outer joint (121), fill the heat exchange loop after filling bag (6) intussuseption, the one end thickness that filling bag (6) is close to outer joint (121) is less than the other end of filling bag (6).
2. The antifreeze surface cooler of claim 1, wherein: the surface of the filling bag (6) is uniformly provided with bulges (61), the bulges (61) are annular, the cross section of each bulge (61) is semicircular, and the height of each bulge (61) is smaller than the wall thickness of the filling bag (6);
the distance between the bulges (61) is inversely proportional to the wall thickness of the filling bag (6), and the bulges (61) and the filling bag (6) are made of the same material.
3. The antifreeze surface cooler of claim 1, wherein: the bent pipe (31) is a metal corrugated pipe, and the metal corrugated pipe has elasticity.
4. The antifreeze surface cooler of claim 2, wherein: the inner wall of the heat exchange loop is coated with a lubricating layer, and the lubricating layer is a polytetrafluoroethylene coating.
5. The antifreeze surface cooler of claim 1, wherein: the heat exchange pipes (3) in the heat exchange loop are distributed from high to low in the direction from the water supply pipe (11) to the water return pipe (12), and the bent pipe (31) is obliquely arranged.
6. The antifreeze surface cooler of claim 5, wherein: install collector tube (4) on frame (1), collector tube (4) are located the one end of keeping away from delivery pipe (11) on frame (1), collector tube (4) are through tee bend connecting pipe (43) and heat exchange tube (3) intercommunication each other, drain pipe (5) are installed to the lower extreme of collector tube (4), install the valve on collector tube (4), be provided with temperature sensor on frame (1), the controller of surface air cooler still temperature sensor's data control valve opens and close.
7. The antifreeze surface cooler of claim 6, wherein: a protective shell (441) is arranged on the frame (1), a motor (44) is arranged in the protective shell (441), the motor (44) is positioned above the water collecting pipe (4),
install connecting rod (41) in collector tube (4), through drive belt (442) interconnect between the upper end of connecting rod (41) and motor (44), install dead lever (421) on connecting rod (41), install separation blade (42) on dead lever (421), separation blade (42) are the inner wall of arc and laminating collector tube (4), separation blade (42) seal junction on collector tube (4) three-way connection pipe (43).
8. The antifreeze surface cooler of claim 7, wherein: an elastic layer (422) is arranged on the baffle plate (42), and the elastic layer (422) is positioned between the baffle plate (42) and the inner wall of the water collecting pipe (4).
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| CN202311644049.6A CN117366853B (en) | 2023-12-04 | 2023-12-04 | Antifreezing surface cooler |
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