CN113899226A - Heat exchange device, refrigerant adjusting device and control method - Google Patents
Heat exchange device, refrigerant adjusting device and control method Download PDFInfo
- Publication number
- CN113899226A CN113899226A CN202111232651.XA CN202111232651A CN113899226A CN 113899226 A CN113899226 A CN 113899226A CN 202111232651 A CN202111232651 A CN 202111232651A CN 113899226 A CN113899226 A CN 113899226A
- Authority
- CN
- China
- Prior art keywords
- liquid level
- valve body
- refrigerant
- level sensor
- opening degree
- 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
- 239000003507 refrigerant Substances 0.000 title claims abstract description 130
- 238000000034 method Methods 0.000 title claims abstract description 55
- 239000007788 liquid Substances 0.000 claims abstract description 220
- 238000001514 detection method Methods 0.000 claims abstract description 26
- 238000005507 spraying Methods 0.000 claims abstract description 25
- 238000001704 evaporation Methods 0.000 claims abstract description 22
- 230000008020 evaporation Effects 0.000 claims abstract description 22
- 239000007921 spray Substances 0.000 claims description 24
- 230000009471 action Effects 0.000 claims description 18
- 238000004590 computer program Methods 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 230000033228 biological regulation Effects 0.000 claims description 11
- 238000009833 condensation Methods 0.000 claims description 11
- 230000005494 condensation Effects 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 10
- 230000003750 conditioning effect Effects 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 description 21
- 238000010586 diagram Methods 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 230000000087 stabilizing effect Effects 0.000 description 7
- 239000002826 coolant Substances 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D3/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits
- F28D3/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits with tubular conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D3/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits
- F28D3/04—Distributing arrangements
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The embodiment of the application provides a heat exchange device, a refrigerant adjusting device and a control method, and relates to the technical field of air conditioners. The method comprises the steps of receiving liquid level detection signals sent by a first liquid level sensor and a second liquid level sensor; the opening degree of the first valve body and the opening degree of the second valve body are adjusted according to the detection result, so that the liquid level of the refrigerant is located between the first liquid level sensor and the second liquid level sensor, the liquid level can be controlled while spraying, the system stability and the heat exchange efficiency are improved, and the problem that the evaporation heat exchange efficiency of the existing heat exchange tank is low is solved.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to a heat exchange device, a refrigerant adjusting device and a control method.
Background
The working principle of the existing heat exchange tank is that a tank body runs through a refrigerant, a pipe pass runs through water, the heat exchange tank is mainly used as a condenser and cannot be used as an evaporator, and due to the fact that simple liquid separation is carried out at the bottom in the evaporation working condition, the tank body is about 1/3 full of liquid, the rest of the tank body is in a gaseous state, a certain dry pipe problem exists in the upper part, and the evaporation heat exchange efficiency is low.
Disclosure of Invention
An object of the embodiment of the application is to provide a heat exchange device, a refrigerant adjusting device and a control method, which can control the liquid level while spraying, thereby improving the system stability and the heat exchange efficiency, and further solving the problem that the evaporation heat exchange efficiency of the existing heat exchange tank is low.
The embodiment of the application provides a heat transfer device, including a jar body and arranging in the internal heat exchange tube of jar, the device still includes:
the liquid path pipe is arranged at the top of the tank body, the tail end of the liquid path pipe extends downwards to the bottom of the tank body, and the liquid path pipe is used for injecting a refrigerant into the tank body;
the spray pipe is arranged at the top of the tank body and used for spraying a refrigerant to the heat exchange pipe so as to be matched with the liquid path pipe to adjust the liquid level of the refrigerant in the tank body;
the liquid level sensor is arranged in the tank body and used for detecting the liquid level of the refrigerant in the tank body;
and the controller is used for receiving the liquid level detection signal of the liquid level sensor so as to adjust the refrigerant quantity output by the liquid path pipe and the spray pipe according to the current refrigerant liquid level and adjust the refrigerant liquid level in the tank body to a preset position.
In the above-mentioned realization process, the interior upper portion of heat exchanger sprays the refrigerant volume and the bottom soaks the refrigerant volume can adjust according to the liquid level height for the refrigerant liquid level keeps the take the altitude, plays the effect of stabilizing the liquid level, thereby improves system stability, and the refrigerant that upper portion sprayed can contact with more heat transfer pipes, thereby increases area of contact, can promote surface heat transfer coefficient, has improved heat exchange efficiency, thereby solves the problem that the evaporation heat exchange efficiency of current heat transfer jar is on the low side.
Further, the apparatus further comprises:
the first valve body is arranged on the spray pipe and used for adjusting the opening according to the liquid level of the refrigerant in the tank body so as to control the spraying amount of the spray pipe;
and the second valve body is arranged on the liquid path pipe and used for adjusting the opening according to the current liquid level of the refrigerant in the tank body so as to control the amount of the refrigerant flowing out of the liquid path pipe.
In the implementation process, the refrigerant liquid level in the tank can be adjusted by adjusting the opening degrees of the first valve body and the second valve body.
Further, the liquid level sensor includes:
the liquid level detection device comprises a first liquid level sensor and a second liquid level sensor arranged above the first liquid level sensor, wherein the spacing distance is arranged in the tank body and used for detecting the liquid level of a refrigerant in the tank body so as to control the opening degree of the first valve body and the second valve body according to a detection result, and the liquid level of the refrigerant is located between the first liquid level sensor and the second liquid level sensor.
In the implementation process, the opening degree of the first valve body and the opening degree of the second valve body can be adjusted according to the detection signal through the liquid level height in the detection tank body, so that the liquid level of the refrigerant is stabilized, and the possibility of stabilizing oil return and reducing liquid carrying of the air outlet pipe of the heat exchanger is facilitated.
Further, the apparatus further comprises:
and the spraying pore plate is arranged below the spraying pipe so that the refrigerant sprayed by the spraying pipe penetrates through the spraying pore plate and is sprayed onto the heat exchange pipe.
In the implementation process, the refrigerant sprayed out of the upper spraying pipe has a spraying effect and is in contact with more heat exchange pipes under the action of the spraying pore plate.
The embodiment of the present application further provides a refrigerant adjusting device, including above-mentioned heat transfer device, the device still includes:
and the third valve body is arranged on a main pipeline formed by combining the liquid pipeline and the spray pipe, the other end of the main pipeline is connected with the evaporation device so as to adjust the third valve body according to the superheat degree, adjust the second valve body according to the adjusting action of the third valve body, and adjust the first valve body according to the adjusting action of the second valve body.
In the implementation process, the main circuit where the first valve body and the second valve body are located is provided with the third valve body, and compared with other valve bodies, the third valve body needs to be preferentially adjusted and is used for adjusting the refrigerant flow according to the air return or exhaust superheat degree.
Further, the apparatus further comprises:
and the oil return pipe is arranged at the bottom of the heat exchange device, and the other end of the oil return pipe is connected with the low-pressure tank.
In the implementation process, the oil return pipeline is arranged for stable oil return.
The embodiment of the application also provides a control method of the heat exchange device, which comprises the following steps:
receiving a liquid level detection signal sent by a liquid level sensor;
and adjusting the refrigerant quantity output by the liquid path pipe and the spray pipe according to the current refrigerant liquid level so as to adjust the refrigerant liquid level in the tank body to a preset position.
In the implementation process, the controller adjusts the liquid level of the refrigerant through the liquid level signal, stabilizes the refrigerant at a preset position, and plays a role in stabilizing the liquid level of the refrigerant, so that oil return is facilitated.
Further, adjust according to the refrigerant liquid level the liquid path pipe with the refrigerant volume of shower output to adjust the internal refrigerant liquid level of jar is to presetting the position, include:
and adjusting the opening degrees of the first valve body and the second valve body according to the current refrigerant liquid level so as to enable the refrigerant liquid level to be between the first liquid level sensor and the second liquid level sensor.
In the implementation process, the liquid level detection signal is matched with the first valve body and the second valve body, so that the liquid level of the refrigerant is stabilized between the first liquid level sensor and the second liquid level sensor, the adjustment and stabilization of the liquid level of the refrigerant are realized, and the possibility of stabilizing oil return and reducing liquid carrying of the outlet pipe of the heat exchanger is facilitated.
Further, the opening degree of first valve body and second valve body is adjusted according to the testing result to make the liquid level of refrigerant be in between first level sensor and the second level sensor, include:
when the valve body is in an evaporation working state, the opening degree of the second valve body is adjusted on the basis of the preset initial opening degree according to the detection result, the opening degree of the first valve body is adjusted after the first preset time of the action of the second valve body, the adjustment of the first valve body is stopped until the second valve body is in a stable state, and the preset initial opening degree is between the preset minimum operation opening degree and the preset maximum operation opening degree.
In the implementation process, the adjusting priorities of the three valve bodies are given, and the purpose of adjusting the liquid level of the refrigerant is achieved through the mutual matching of the three valve bodies.
Further, before the step of adjusting the opening degree of the second valve body on the basis of a preset initial opening degree according to the detection result, the method further includes:
judging the action state of a third valve body, and if the third valve body acts, adjusting the second valve body after the second preset time of the third valve body action;
if the third valve body is in a stable state, the second valve body acts once every third preset time;
and if the superheat degree reaches the regulation condition of the third valve body, preferentially regulating the third valve body.
In the above implementation, the third valve body has the privilege of preferential adjustment, and the second valve body needs to be adjusted according to the state of the third valve body.
Further, when the valve is in the evaporation working state, the opening degree of the second valve body is adjusted on the basis of a preset initial opening degree according to the detection result, and the opening degree of the first valve body is adjusted after a first preset time of the action of the second valve body, including:
if the current liquid level is below the first liquid level sensor, the opening degree of the second valve body is increased according to a first preset step number, and the opening degree of the first valve body is decreased according to a second preset step number after third preset time until the current liquid level is between the first liquid level sensor and the second liquid level sensor;
if the current liquid level is between the first liquid level sensor and the second liquid level sensor, the first valve body and the second valve body are in a non-action state;
and if the current liquid level is above the second liquid level sensor, the opening degree of the second valve body is adjusted to be smaller according to a first preset step number, and the opening degree of the first valve body is adjusted to be larger according to a second preset step number after third preset time until the current liquid level is between the first liquid level sensor and the second liquid level sensor.
In the implementation process, the opening degrees of the first valve body and the second valve body are adjusted according to the current liquid level position of the refrigerant, so that the liquid level of the refrigerant is finally stabilized between the first liquid level sensor and the second liquid level sensor.
Further, the method further comprises:
and when the condenser is in a condensation working state, closing the first valve body, and adjusting the opening degree of the second valve body to the maximum operation opening degree.
In the implementation process, when the refrigerant is in a condensation working state, the first valve body is closed, and the second valve body is fully opened, so that the refrigerant is prevented from being pumped away without being condensed.
An embodiment of the present application further provides an electronic device, where the electronic device includes a memory and a processor, where the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the control method of the refrigerant adjusting device according to any one of the above descriptions.
An embodiment of the present invention further provides a readable storage medium, where computer program instructions are stored, and when the computer program instructions are read and executed by a processor, the method for controlling a refrigerant adjusting device is performed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a heat exchange device according to an embodiment of the present application;
fig. 2 is a schematic view of an evaporation system of a refrigerant conditioning device according to an embodiment of the present disclosure;
fig. 3 is a schematic view of a condensing system of a refrigerant adjusting device according to an embodiment of the present disclosure;
fig. 4 is a flowchart of a control method of a refrigerant adjusting device according to an embodiment of the present application;
FIG. 5 is a flow chart of valve body adjustment provided by an embodiment of the present application;
fig. 6 is a block diagram illustrating a control device of a refrigerant adjusting device according to an embodiment of the present disclosure;
fig. 7 is a block diagram of a control device of another refrigerant adjusting device according to an embodiment of the present disclosure.
Icon:
100-a receiving module; 200-adjusting the control module; 201-an evaporation regulation module; 202-a third valve body regulation module; 203-condensation regulation module; 301-a first valve body; 302-a second valve body; 400-refrigerant liquid pipe; 401-a shower; 402-liquid line pipe; 403-spraying orifice plate; 501-water outlet pipe; 502-refrigerant gas pipe; 503-oil return pipe; 504-water inlet pipe; 600-tank body; 700-heat exchange tube; 801-a first level sensor; 802-second liquid level sensor.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Example 1
Referring to fig. 1, fig. 1 is a schematic structural diagram of a heat exchange device according to an embodiment of the present application. The device can adjust refrigerant liquid level height, stabilizes the liquid level height, and the device still includes following structure except including jar body 600 and arranging the heat exchange tube 700 in this jar body 600 in:
the liquid path pipe 402 is arranged at the top of the tank body 600, the tail end of the liquid path pipe extends downwards to the bottom of the tank body 600, the liquid path pipe 402 is arranged on a central axis of the tank body 600, the heat exchange pipes 700 are distributed around the liquid path pipe, so that the heat exchange pipes 700 around the liquid path pipe can uniformly contact with a refrigerant, and the liquid path pipe 402 is used for injecting the refrigerant into the tank body 600, so that the heat exchange pipes 700 at the bottom are soaked in the refrigerant. The second valve body 302 (the valve 2 in fig. 2) is disposed on the liquid path pipe 402, and is configured to adjust an opening degree of the liquid path pipe 402 according to a current liquid level of the refrigerant in the tank 600, so as to control an amount of the refrigerant flowing into the tank 600 from the liquid path pipe 402.
The spraying pipe 401 is disposed at the top of the tank 600 and is used for spraying a refrigerant to the heat exchange pipe 700 so as to adjust the liquid level of the refrigerant in the tank 600 by matching with the liquid path pipe 402. The first valve body 301 (the valve 1 in fig. 2) is disposed on the shower pipe 401, and is configured to adjust its own opening degree according to a liquid level of a refrigerant in the tank 600, so as to control a spraying amount of the shower pipe 401.
The spray pore plate 403 is further arranged below the spray pipe 401, the spray pore plate 403 is distributed above the heat exchange pipe 700 in a surrounding manner, a refrigerant flowing out of the spray pipe 401 passes through the spray pore plate 403 and then is sprayed out of the heat exchange pipe 700 through the spray pore plate 403, and the spray pore plate 403 can be used for increasing the spray area and improving the spray efficiency. The coolant sprayed from the shower pipe 401 and the liquid line pipe 402 is merged at the bottom of the tank 600, and acts on the coolant level change in the tank 600 together.
When being in evaporation operating condition, the liquid refrigerant that upper portion trunk area under control spills through spraying orifice plate 403 will contact with more heat exchange tubes 700, increase with heat exchange tubes 700 area of contact, can promote surface heat transfer coefficient, under the same condition, required heat transfer area is littleer to improve heat exchange efficiency.
The first liquid level sensor 801 and the second liquid level sensor 802 disposed above the first liquid level sensor 801 are disposed in the tank 600 at a distance, for example, the first liquid level sensor 801 is disposed at a height h of the tank 600, and the second liquid level sensor 802 is disposed at a height h + q of the tank 600. First level sensor 801 and second level sensor 802 are used for detecting the liquid level of the coolant that is located near it in jar body 600 respectively to can be according to the aperture of the first valve body 301 of testing result control and second valve body 302, thereby the coolant liquid level in the adjustment jar body 600 is in preset position, specifically, so that the liquid level of coolant is in between first level sensor 801 and second level sensor 802, realize the purpose of stabilizing the liquid level, and then be favorable to stablizing the oil return and reduce the air return and take liquid. The first liquid level sensor 801, the second liquid level sensor 802, the first valve body 301 and the second valve body 302 are mutually matched, so that the liquid level of refrigerant in the tank body 600 can be more accurately adjusted, and the liquid level of refrigerant is stabilized between the first liquid level sensor 801 and the second liquid level sensor 802.
In summary, the amount of spraying refrigerants on the upper inner portion and the amount of soaking refrigerants on the bottom of the heat exchange device can be adjusted according to the liquid level, the liquid level is stabilized through the mutual matching of the first valve body 301 and the second valve body 302, and the liquid level is stabilized, so that the situation that the refrigerant is excessively sprayed by a spraying path to cause the liquid to be carried at the gas outlet of the tank body 600 can be prevented on one hand; on the other hand, the liquid level stability is favorable to the stability of oil return to promote the reliability of system.
Example 2
The embodiment of the application provides a refrigerant adjusting device, and the device includes above-mentioned heat transfer device in addition, still includes:
the third valve body is disposed on a main pipeline formed by the liquid pipeline 402 and the shower pipe 401, that is, on the refrigerant liquid pipe 400 of the main pipeline, as shown in fig. 2 to 3, which are a schematic diagram of an evaporation system (a cooling flow direction) and a schematic diagram of a condensation system (a heating flow direction) of the refrigerant regulating device, respectively. A throttle valve EXV (electronic expansion valve) in the figure is a third valve body, and mainly functions to adjust the refrigerant flow rate when a preset adjustment condition of the return air superheat degree or the exhaust air superheat degree is satisfied. And the third valve body is located on the main line where the first valve body 301 and the second valve body 302 are located, and needs to be preferentially adjusted after the adjustment condition is satisfied. The other end of the refrigerant liquid pipe 400 is connected to an evaporation device. The specific adjusting processes of the first valve body 301, the second valve body 302 and the third valve body are described in the following embodiments, and are not described herein again.
An oil return pipe 503 is arranged at the bottom of the heat exchange device, and the other end of the oil return pipe 503 is connected with a low-pressure tank.
The water inlet pipe 504 of the heat exchange device is connected with a water return pipeline at the tail end of a user, the other end of the water inlet pipe 504 is connected with a water outlet pipe 501 through a heat exchange pipe 700, the water outlet end of the water outlet pipe 501 is connected with a water supply pipeline at the tail end of the user, and a refrigerant system is formed by a refrigerant air pipe 502 compressor, a low-pressure tank and an evaporator.
Example 3
The embodiment of the present application provides a method for controlling a refrigerant adjusting device, which is applied to the refrigerant adjusting device in the above embodiments, and as shown in fig. 4, is a flowchart of a method for controlling a refrigerant adjusting device, and the method specifically includes the following steps:
step S100: receiving liquid level detection signals sent by a first liquid level sensor 801 and a second liquid level sensor 802;
step S200: the opening degrees of the first valve body 301 and the second valve body 302 are adjusted according to the detection result so that the liquid level of the refrigerant is between the first liquid level sensor 801 and the second liquid level sensor 802.
The step may specifically include:
When the whole system is in an evaporation working state, the first valve body 301 and the second valve body 302 are both preset with an initial opening degree, and the adjustment range of the opening degree is between the minimum operation opening degree and the maximum operation opening degree.
The regulation priorities of the three valve bodies are as follows: EXV > valve 2> valve 1, i.e. if the EXV is actuated, valve 2 will be actuated a second predetermined time, e.g. a seconds, after the EXV is actuated; if the EXV is already in a steady state and does not need to be adjusted, the valve 2 is actuated every third preset time, for example, x seconds, and the number of steps of each actuation of the valve 2 is b steps. The valve 1 will be actuated for a first predetermined time, e.g. c seconds, after the valve 2 has been actuated, and if the valve 2 is already in a stable state and no longer needs to be adjusted, the valve 1 will remain stationary, and the number of steps per actuation of the valve 1 is d steps. In the process of adjusting the liquid level, if the return air superheat degree or the exhaust air superheat degree reaches the condition of EXV adjustment, the EXV is preferentially adjusted.
For the setting of the time parameters a and c, the time interval between two actions of the third valve body should be greater than the sum of the values of a and c, and for the specific value, the specific setting can be performed according to the requirement, and is not limited herein.
The opening degree variation width parameters b and d of the first valve body 301 and the second valve body 302 may also be specifically set as needed, and are not specifically limited.
For example, when evaporation is performed, a liquid refrigerant passes through the valve 2 to soak the bottom heat exchange tube 700 in the refrigerant, and meanwhile, the liquid refrigerant passes through the valve 1 to be sprayed downward through the upper spray pipe 401, after the system operates for a period of time, such as e seconds, the valve 2 starts to adjust the opening degree according to detection signals fed back by the first liquid level sensor 801 and the second liquid level sensor 802, as shown in fig. 5, which is a valve body adjustment flow chart, and the specific adjustment process is as follows:
firstly, judging whether the EXV meets the condition of preferential regulation, if so, preferentially regulating the EXV, and regulating the valve 2 after regulating the EXV for a seconds; if the EXV does not reach the regulation condition, the valve 2 is directly regulated, the valve 2 can be regulated every x seconds, and for the specific regulation of the valve 2 and the valve 1, the regulation is carried out according to the detection signals fed back by the first liquid level sensor 801 and the second liquid level sensor 802, specifically:
if the current liquid level is below the first liquid level sensor 801, the valve 2 is opened for b steps each time, and the valve 1 is closed for d steps each time after x seconds until the liquid level is between the first liquid level sensor 801 and the second liquid level sensor 802;
if the current liquid level is between the first liquid level sensor 801 and the second liquid level sensor 802, the valve 1 and the valve 2 are kept still and do not need to be adjusted;
if the current liquid level is above the second liquid level sensor 802, the valve 2 is closed for b steps each time, and the valve 1 is opened for d steps each time after x seconds until the liquid level is between the first liquid level sensor 801 and the second liquid level sensor 802.
It should be noted that, in the liquid level adjusting process, if the return air superheat degree or the exhaust air superheat degree meets the condition of EXV adjustment, the EXV is preferentially adjusted, and after the EXV is in a stable state, the first valve body 301 and/or the second valve body 302 which is in the adjustment state before the adjustment is resumed.
Through the adjusting process, the refrigerant liquid level is stabilized between the first liquid level sensor 801 and the second liquid level sensor 802, the effects of stabilizing the oil return amount and the liquid spraying amount are achieved, and the stability and the reliability of the system are improved.
When the condensation work is carried out, the working process does not need to spray, so the valve body 1 is in a closed state, the valve body 2 is fully opened, namely, in a maximum operation opening state, the refrigerant can be prevented from being pumped away without being condensed, and the condensation effect is not achieved.
Example 4
An embodiment of the present application provides a control device of a refrigerant adjusting device, as shown in fig. 6, which is a block diagram of the control device of the refrigerant adjusting device, and the control device includes but is not limited to:
the receiving module 100 is configured to receive liquid level detection signals sent by the first liquid level sensor 801 and the second liquid level sensor 802;
and the adjusting control module 200 adjusts the opening degrees of the first valve body 301 and the second valve body 302 according to the detection result, so that the liquid level of the refrigerant is between the first liquid level sensor 801 and the second liquid level sensor 802.
Further, as shown in fig. 7, the adjusting control module includes an evaporation adjusting module 201, a third valve body adjusting module 202, and a condensation adjusting module 203, where the evaporation adjusting module 201 is configured to adjust an opening degree of the second valve body 302 based on a preset initial opening degree according to the detection result when the evaporation adjusting module is in an evaporation working state, and adjust the opening degree of the first valve body 301 after a first preset time when the second valve body 302 is in an operation state, and stop adjusting the first valve body 301 until the second valve body 302 is in a stable state, where the preset initial opening degree is between a preset minimum operation opening degree and a preset maximum operation opening degree. For the specific adjustment process, embodiment 3 can be seen, and details are not repeated here.
A third valve body adjusting module 202, configured to determine an operation state of a third valve body, and if the third valve body operates, adjust the second valve body 302 after a second preset time of the third valve body operation; if the third valve body is in a stable state, the second valve body 302 acts once every third preset time; and if the superheat degree reaches the regulation condition of the third valve body, preferentially regulating the third valve body.
And the condensation adjusting module 203 is used for closing the first valve body 301 and adjusting the opening degree of the second valve body 302 to the maximum operation opening degree when the condensation module is in a condensation working state.
An embodiment of the present application further provides an electronic device, where the electronic device includes a memory and a processor, the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the method for controlling the refrigerant adjusting device according to embodiment 3.
An embodiment of the present invention further provides a readable storage medium, where computer program instructions are stored, and when the computer program instructions are read and executed by a processor, the method for controlling a refrigerant adjusting device according to embodiment 3 is executed.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (14)
1. The heat exchange device is characterized by comprising a tank body and a heat exchange tube arranged in the tank body, and the device further comprises:
the liquid path pipe is arranged at the top of the tank body, the tail end of the liquid path pipe extends downwards to the bottom of the tank body, and the liquid path pipe is used for injecting a refrigerant into the tank body;
the spray pipe is arranged at the top of the tank body and used for spraying a refrigerant to the heat exchange pipe so as to be matched with the liquid path pipe to adjust the liquid level of the refrigerant in the tank body;
the liquid level sensor is arranged in the tank body and used for detecting the liquid level of the refrigerant in the tank body;
and the controller is used for receiving the liquid level detection signal of the liquid level sensor so as to adjust the refrigerant quantity output by the liquid path pipe and the spray pipe according to the current refrigerant liquid level and adjust the refrigerant liquid level in the tank body to a preset position.
2. The heat exchange device of claim 1, further comprising:
the first valve body is arranged on the spray pipe and used for adjusting the opening according to the liquid level of the refrigerant in the tank body so as to control the spraying amount of the spray pipe;
and the second valve body is arranged on the liquid path pipe and used for adjusting the opening according to the current liquid level of the refrigerant in the tank body so as to control the amount of the refrigerant flowing out of the liquid path pipe.
3. The heat exchange device of claim 2, wherein the level sensor comprises:
the liquid level detection device comprises a first liquid level sensor and a second liquid level sensor arranged above the first liquid level sensor, wherein the spacing distance is arranged in the tank body and used for detecting the liquid level of a refrigerant in the tank body so as to control the opening degree of the first valve body and the second valve body according to a detection result, and the liquid level of the refrigerant is located between the first liquid level sensor and the second liquid level sensor.
4. The heat exchange device of claim 1, further comprising:
and the spraying pore plate is arranged below the spraying pipe so that the refrigerant sprayed by the spraying pipe penetrates through the spraying pore plate and is sprayed onto the heat exchange pipe.
5. A refrigerant conditioning device, comprising the heat exchange device of any one of claims 1 to 4, the device further comprising:
and the third valve body is arranged on a main pipeline formed by combining the liquid pipeline and the spray pipe, the other end of the main pipeline is connected with the evaporation device so as to adjust the third valve body according to the superheat degree, adjust the second valve body according to the adjusting action of the third valve body and adjust the first valve body according to the adjusting action of the second valve body.
6. The refrigerant conditioning device as set forth in claim 5, further comprising:
and the oil return pipe is arranged at the bottom of the heat exchange device, and the other end of the oil return pipe is connected with the low-pressure tank.
7. A method for controlling a refrigerant conditioning device, the method being applied to the controller according to any one of claims 5 to 6, the method comprising:
receiving a liquid level detection signal sent by a liquid level sensor;
and adjusting the refrigerant quantity output by the liquid path pipe and the spray pipe according to the current refrigerant liquid level so as to adjust the refrigerant liquid level in the tank body to a preset position.
8. The method for controlling the refrigerant regulating device according to claim 7, wherein the regulating the refrigerant amount output from the liquid path pipe and the shower pipe according to the refrigerant liquid level to regulate the refrigerant liquid level in the tank body to a preset position comprises:
and adjusting the opening degrees of the first valve body and the second valve body according to the current refrigerant liquid level so as to enable the refrigerant liquid level to be between the first liquid level sensor and the second liquid level sensor.
9. The method of claim 8, wherein the adjusting the opening degrees of the first valve body and the second valve body according to the current refrigerant level to make the refrigerant level between the first liquid level sensor and the second liquid level sensor comprises:
when the valve body is in an evaporation working state, the opening degree of the second valve body is adjusted on the basis of the preset initial opening degree according to the detection result, the opening degree of the first valve body is adjusted after the first preset time of the action of the second valve body, the adjustment of the first valve body is stopped until the second valve body is in a stable state, and the preset initial opening degree is between the preset minimum operation opening degree and the preset maximum operation opening degree.
10. The method for controlling a refrigerant adjusting device according to claim 9, wherein before the step of adjusting the opening degree of the second valve body based on a preset initial opening degree based on the detection result, the method further comprises:
judging the action state of a third valve body, and if the third valve body acts, adjusting the second valve body after the second preset time of the third valve body action;
if the third valve body is in a stable state, the second valve body acts once every third preset time;
and if the superheat degree reaches the regulation condition of the third valve body, preferentially regulating the third valve body.
11. The refrigerant adjusting apparatus control method according to claim 9, wherein the adjusting the opening degree of the second valve element based on a preset initial opening degree according to the detection result and the adjusting the opening degree of the first valve element after a first preset time of the second valve element operation in the evaporation operation state includes:
if the current liquid level is below the first liquid level sensor, the opening degree of the second valve body is increased according to a first preset step number, and the opening degree of the first valve body is decreased according to a second preset step number after third preset time until the current liquid level is between the first liquid level sensor and the second liquid level sensor;
if the current liquid level is between the first liquid level sensor and the second liquid level sensor, the first valve body and the second valve body are in a non-action state;
and if the current liquid level is above the second liquid level sensor, the opening degree of the second valve body is adjusted to be smaller according to a first preset step number, and the opening degree of the first valve body is adjusted to be larger according to a second preset step number after third preset time until the current liquid level is between the first liquid level sensor and the second liquid level sensor.
12. The method of controlling a refrigerant conditioning device as claimed in claim 8, further comprising:
and when the condenser is in a condensation working state, closing the first valve body, and adjusting the opening degree of the second valve body to the maximum operation opening degree.
13. An electronic device, comprising a memory and a processor, wherein the memory is used for storing a computer program, and the processor runs the computer program to make the electronic device execute the control method of the refrigerant regulating apparatus according to any one of claims 7 to 12.
14. A readable storage medium, wherein computer program instructions are stored in the readable storage medium, and when the computer program instructions are read and executed by a processor, the computer program instructions execute the method for controlling the refrigerant conditioning apparatus according to any one of claims 7 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111232651.XA CN113899226B (en) | 2021-10-22 | 2021-10-22 | Heat exchange device, refrigerant adjusting device and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111232651.XA CN113899226B (en) | 2021-10-22 | 2021-10-22 | Heat exchange device, refrigerant adjusting device and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113899226A true CN113899226A (en) | 2022-01-07 |
| CN113899226B CN113899226B (en) | 2024-06-25 |
Family
ID=79026079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111232651.XA Active CN113899226B (en) | 2021-10-22 | 2021-10-22 | Heat exchange device, refrigerant adjusting device and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113899226B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03221760A (en) * | 1990-01-26 | 1991-09-30 | Saginomiya Seisakusho Inc | Method and apparatus for controlling refrigerant flow in heat pump air conditioner |
| CN202792709U (en) * | 2012-06-13 | 2013-03-13 | 湖南凌天科技有限公司 | Spraying type evaporator |
| CN103743161A (en) * | 2014-01-22 | 2014-04-23 | 清华大学 | Evaporating device with function of automatic liquid level stabilization |
| CN104457040A (en) * | 2014-11-13 | 2015-03-25 | 广东申菱空调设备有限公司 | Spray-type falling film evaporator and liquid level control method thereof |
| CN105387653A (en) * | 2015-12-21 | 2016-03-09 | 重庆美的通用制冷设备有限公司 | Evaporator and water chilling unit having same |
| CN110044103A (en) * | 2018-01-15 | 2019-07-23 | 杭州赛富特设备有限公司 | A kind of falling film type shell-tube evaporator and air-conditioning system |
-
2021
- 2021-10-22 CN CN202111232651.XA patent/CN113899226B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03221760A (en) * | 1990-01-26 | 1991-09-30 | Saginomiya Seisakusho Inc | Method and apparatus for controlling refrigerant flow in heat pump air conditioner |
| CN202792709U (en) * | 2012-06-13 | 2013-03-13 | 湖南凌天科技有限公司 | Spraying type evaporator |
| CN103743161A (en) * | 2014-01-22 | 2014-04-23 | 清华大学 | Evaporating device with function of automatic liquid level stabilization |
| CN104457040A (en) * | 2014-11-13 | 2015-03-25 | 广东申菱空调设备有限公司 | Spray-type falling film evaporator and liquid level control method thereof |
| CN105387653A (en) * | 2015-12-21 | 2016-03-09 | 重庆美的通用制冷设备有限公司 | Evaporator and water chilling unit having same |
| CN110044103A (en) * | 2018-01-15 | 2019-07-23 | 杭州赛富特设备有限公司 | A kind of falling film type shell-tube evaporator and air-conditioning system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113899226B (en) | 2024-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109282545B (en) | Air-supplying and enthalpy-increasing control method of low-temperature direct-current variable-frequency heat pump system | |
| CN111550904B (en) | Electronic expansion valve control method and device and air conditioner | |
| US8205465B2 (en) | Control system for an expansion valve regulating refrigerant to an evaporator of a climate control system | |
| CN103307754B (en) | Method and device for controlling opening of electronic expansion valve of water heater and air conditioner | |
| CN108981101B (en) | Control method and control device of electronic expansion valve and unit | |
| CN112665112B (en) | Air conditioner, control method thereof and readable storage medium | |
| CN113188230A (en) | Expansion valve control method and device of multi-connected air conditioner and multi-connected air conditioner | |
| CN111306855A (en) | Refrigerant heating control method and device for improving stability and air conditioning equipment | |
| CN103776211B (en) | frequency conversion system and control method and control device thereof | |
| CN113719964A (en) | Air conditioner control method and device and air conditioner | |
| EP0978694A1 (en) | Absorption type refrigerating machine | |
| CN113237195B (en) | Air conditioner dehumidification method and device, storage medium and air conditioner | |
| CN113899226A (en) | Heat exchange device, refrigerant adjusting device and control method | |
| CN111811118B (en) | Air conditioner and heating control method and device thereof, and readable storage medium | |
| US5557939A (en) | Control system for absorption chillers | |
| CN113188237B (en) | Control method and device of air conditioner, storage medium and processor | |
| CN111623477B (en) | Air conditioner, air conditioner control method and device and readable storage medium | |
| CN111561773B (en) | Fresh air system, control method thereof and computer-readable storage medium | |
| JP2000055503A (en) | Absorption type refrigerating device | |
| JP2011127884A (en) | Temperature/humidity control device and method | |
| CN111306852A (en) | Air conditioning system for preventing heat exchanger from frosting and control method thereof | |
| CN111033146A (en) | Expansion valve control sensor and refrigeration system using the same | |
| CN114061025B (en) | Defrosting control method and device for air conditioning system, controller and air conditioning system | |
| CN117553413A (en) | Noise control method and device for multi-split air conditioner system and multi-split air conditioner system | |
| JPH10238868A (en) | Refrigerating cycle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |