CN208720559U - A kind of water cooler and its control device - Google Patents
A kind of water cooler and its control device Download PDFInfo
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- CN208720559U CN208720559U CN201820961753.2U CN201820961753U CN208720559U CN 208720559 U CN208720559 U CN 208720559U CN 201820961753 U CN201820961753 U CN 201820961753U CN 208720559 U CN208720559 U CN 208720559U
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- bypass
- increment
- regulator valve
- water cooler
- adjustment
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Abstract
The utility model discloses a kind of water cooler and its control device.Wherein, which includes: bypass line, for leading to the exhaust of compressor high-pressure side at compressor low-pressure side air-breathing；Bypass regulator valve is arranged on the bypass line, for adjusting the gas flow for passing through the bypass line；Controller determines increment of adjustment according to the freezing leaving water temperature and pre-set target temperature, the aperture of the bypass regulator valve is controlled according to the increment of adjustment for obtaining the freezing leaving water temperature of evaporator.By the utility model, the data acquisition that can quickly completely use system user is returned, and by big data analysis, be can be convenient and is fast evaluated air-conditioning system using effect.
Description
Technical field
The utility model relates to machine set technology fields, in particular to a kind of water cooler and its control device.
Background technique
For centrifugal refrigerating machines, due to characteristics such as its surges, it is difficult to be unloaded to stable operation under underload.Heat
Gas bypass is to control a kind of common economic means of centrifugal refrigerating machines cooling capacity, by hot-gas bypass by compressor high-pressure side
Exhaust is led at compressor low-pressure side air-breathing, so that the gas of bypass is not involved in system circulation, so that unit operating load is reduced,
Achieve the purpose that widen unit range of operation.
In practice, it will usually bypass solenoid valve is arranged in bypass line in selection, is acted by the opened/closed of solenoid valve,
Realize unlatching/closing hot-gas bypass, bypass a part is not involved in the refrigerant of circulation to achieve the purpose that adjust load.But this
Kind control method has the following problems:
1) bypass solenoid valve only has the function of opened/closed, can only bypass the refrigerant gas of particular flow rate, unit load
It is down or up that cliff of displacement formula occurs in moment, without continuously adjusting burden functional；
2) load bypassed is more than realistic objective demand load, and compressor loads are run at this time, compressor after load operating
Load is greater than target requirement load again, and compressor then unloads operation, opens bypass solenoid valve, so repeats the above movement, lead
High frequent is caused to add unloading, hot-gas bypass frequently opens closure.
Aiming at the problem that how to realize that unit hot-gas bypass amount is continuously precisely adjusted in the prior art, not yet propose have at present
The solution of effect.
Utility model content
A kind of water cooler and its control device are provided in the utility model embodiment, it is how real in the prior art to solve
The problem of existing unit hot-gas bypass amount is continuously precisely adjusted.
In order to solve the above technical problems, the utility model provides a kind of water cooler, wherein the water cooler includes:
Bypass line, for leading to the exhaust of compressor high-pressure side at compressor low-pressure side air-breathing；Bypass regulator valve is arranged on the side
Siphunculus road, for adjusting the gas flow for passing through the bypass line；Controller, the freezing for obtaining evaporator go out water temperature
Degree, determines increment of adjustment according to the freezing leaving water temperature and pre-set target temperature, controls the side according to the increment of adjustment
The aperture of logical regulating valve.
Further, the water cooler further include: the freezing water outlet of the evaporator is arranged in temperature sensor,
For monitoring the freezing leaving water temperature of the evaporator during the sampling period, the freezing leaving water temperature is sent to controller.
Further, the controller is also used to carry out PID to the freezing leaving water temperature and the pre-set target temperature
Algorithm process obtains increment of adjustment；In the case where the increment of adjustment is greater than zero, the aperture for controlling the bypass regulator valve increases
Add, in the minus situation of the increment of adjustment, the aperture for controlling the bypass regulator valve is reduced.
Further, the water cooler further include: condenser, the bypass regulator valve are located at the condenser and described
Between evaporator.
Further, the bypass regulator valve is bypass regulation ball valve.
The utility model additionally provides a kind of control device of water cooler, wherein the device includes: acquisition module, is used
In the freezing leaving water temperature for obtaining evaporator；Processing module, for true according to the freezing leaving water temperature and pre-set target temperature
Determine increment of adjustment；Control module, for controlling the aperture of bypass regulator valve according to the increment of adjustment；Wherein, the bypass is adjusted
Section valve is arranged on the bypass line of the water cooler.
PID increment control algorithm is introduced by introducing bypass regulator valve in bypass line using the technical solution of the utility model
Method adjusts the hot-gas bypass amount of bypass line, achievees the purpose that unit hot-gas bypass amount automatic adjusument.
Detailed description of the invention
Fig. 1 is the hardware structural diagram according to the water cooler of the utility model embodiment；
Fig. 2 is the control method flow chart according to the water cooler of the utility model embodiment；
Fig. 3 is the continuous control flow chart according to the hot-gas bypass of the utility model embodiment；
Fig. 4 is the structural block diagram according to the control device of the water cooler of the utility model embodiment.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, it should be understood that this place
The specific embodiment of description is only used to explain the utility model, is not used to limit the utility model.
In subsequent description, it is only using the suffix for indicating such as " module ", " component " or " unit " of element
The explanation for being conducive to the utility model, itself does not have a specific meaning.Therefore, " module ", " component " or " unit " can be with
Mixedly use.
Embodiment one
Referring to Fig. 1, it is the hardware structural diagram for realizing a kind of water cooler of each embodiment of the utility model,
The water cooler may include: the components such as bypass line, bypass regulator valve 5 and controller 7, can also include: compressor 1,
Condenser 2, throttle valve 3, evaporator 4, temperature sensor 6.It will be understood by those skilled in the art that cooling-water machine shown in Fig. 1
Group structure does not constitute the restriction to water cooler, and water cooler may include than illustrating more or fewer components or group
Close certain components or different component layouts.
It is specifically introduced below with reference to all parts of the Fig. 1 to water cooler:
Bypass line, for leading to the exhaust of compressor high-pressure side at compressor low-pressure side air-breathing；
Bypass regulator valve is arranged on bypass line, for adjusting the gas flow by bypass line；It is executable continuous
Aperture regulation,
Controller, it is true according to freezing leaving water temperature and pre-set target temperature for obtaining the freezing leaving water temperature of evaporator
Determine increment of adjustment, the aperture of bypass regulator valve is controlled according to increment of adjustment.
Above controller controls the operation of bypass regulator valve, and one or more components operation of control water cooler.
The controller can operate and execute control algolithm, so that it is determined that an increment of adjustment and the increment of adjustment is applied to bypass
Regulating valve.Above-mentioned bypass regulator valve and controller communication are to execute the increment of adjustment that controller exports.
The present embodiment introduces PID increment control algorithm method, adjusts bypass line by introducing bypass regulator valve in bypass line
Hot-gas bypass amount, achieve the purpose that unit hot-gas bypass amount automatic adjusument.
For more accurate monitoring temperature, in the present embodiment, above-mentioned water cooler can also include: temperature sensing
The freezing water outlet of evaporator is arranged in device, for monitoring the freezing leaving water temperature of evaporator during the sampling period, will freeze out
Coolant-temperature gage is sent to controller.It should be noted that the freezing leaving water temperature of evaporator not only can be by being arranged in evaporator
Freezing water outlet temperature sensor monitoring, can also obtain by other means, such as independently of the independent of water cooler
Temperature sensor.No matter which kind of mode is taken, as long as accurately freezing leaving water temperature can be provided for controller.
In water cooler shown in Fig. 1, the high temperature and high pressure gas of compressor discharge reaches condenser by exhaust pipe, cold
Condenser bottom is condensed into the liquid of cryogenic high pressure, later by throttle valve throttling at the two-phase gas-liquid of low-pressure low-temperature, into evaporation
Device evaporation, low-pressure gas return to compressor.When there is underload demand, bypass regulator valve is opened, opening for bypass regulator valve is adjusted
Degree, by continuously adjusting the gas flow of bypass line refrigerant, achievees the purpose that load control system.
Above controller is specifically used for carrying out pid algorithm processing to freezing leaving water temperature and pre-set target temperature, be adjusted
Save increment；In the case where increment of adjustment is greater than zero, the aperture for controlling bypass regulator valve increases, in the minus feelings of increment of adjustment
Under condition, the aperture for controlling bypass regulator valve is reduced.Bypass regulator valve is controlled by PID delta algorithm, PID since its algorithm is simple,
Robustness is good and high reliablity, is widely used in industrial stokehold.Based on this, the aperture of bypass regulator valve can be carried out
Automatic adjusument.Bypass regulator valve in the present embodiment is between condenser and evaporator, specifically, can be bypass and adjusts
Ball valve, as shown in fig. 1.
Embodiment two
The water cooler introduced based on the above embodiment introduces a kind of control of water cooler below by preferred embodiment
Method.
Fig. 2 is according to the control method flow chart of the water cooler of the utility model embodiment, as shown in Fig. 2, this method
The following steps are included:
Step S201 obtains the freezing leaving water temperature of evaporator；
Step S202 determines increment of adjustment according to freezing leaving water temperature and pre-set target temperature；
Step S203 controls the aperture of bypass regulator valve according to increment of adjustment；Wherein, bypass regulator valve is arranged in cooling-water machine
On the bypass line of group.
The present embodiment introduces PID increment control algorithm method, adjusts bypass line by introducing bypass regulator valve in bypass line
Hot-gas bypass amount, achieve the purpose that unit hot-gas bypass amount automatic adjusument.
For how to obtain freezing leaving water temperature, a kind of preferred embodiment is present embodiments provided, i.e., in the sampling period
It is interior, the freezing leaving water temperature of evaporator is monitored by temperature sensor；Wherein, temperature sensor can be set in the cold of evaporator
Freeze water outlet, it can also be independently of water cooler, as long as being capable of accurate measurements freezing leaving water temperature.
After determining freezing leaving water temperature, pid algorithm processing is carried out to freezing leaving water temperature and pre-set target temperature, is obtained
To increment of adjustment.PID is since its algorithm is simple, and robustness is good and high reliablity, is widely used in industrial stokehold.It is based on
This, can carry out automatic adjusument to the aperture of bypass regulator valve.
Later, the aperture that bypass regulator valve is controlled according to increment of adjustment, specifically includes: judging whether increment of adjustment is greater than
Zero；If it is, the aperture of control bypass regulator valve increases；If it is not, then the aperture of control bypass regulator valve is reduced.Specific
When implementation, the division of numberical range can be carried out to increment of adjustment, each range corresponds to the opening size of bypass regulator valve, from
And the corresponding relationship of increment of adjustment and aperture can be followed, more accurately carry out the adaptive adjustment of bypass regulator valve.
Fig. 3 is the continuous control flow chart according to the hot-gas bypass of the utility model embodiment, as shown in figure 3, the process
The following steps are included:
Step S301 sets the pre-set target temperature value of leaving water temperature；
Step S302, temperature sensor detects current freezing leaving water temperature value, and is supplied to controller；
Step S303, controller carry out pid algorithm processing to pre-set target temperature value and current freezing leaving water temperature value；
Step S304, controller export increment of adjustment；
Step S305, judges whether increment of adjustment is greater than zero；If so, S306 is thened follow the steps, if it is not, then executing step
Rapid S307.
Step S306, increment of adjustment are greater than zero, and the execution aperture for bypassing regulation ball valve increases；
Step S307, less than zero, the execution aperture for bypassing regulation ball valve is reduced increment of adjustment.
So circulation executes above-mentioned process.
The present embodiment by the above process, achievees the purpose that continuously adjust hot-gas bypass amount.
The control method of water cooler corresponding to Fig. 2 introduction present embodiments provides a kind of control dress of water cooler
It sets, the structural block diagram of the control device of water cooler as shown in Figure 4, which includes:
Module 10 is obtained, for obtaining the freezing leaving water temperature of evaporator；
Processing module 20 is connected to and obtains module 10, adjusts for being determined according to freezing leaving water temperature and pre-set target temperature
Save increment；
Control module 30 is connected to processing module 20, for controlling the aperture of bypass regulator valve according to increment of adjustment；Its
In, above-mentioned bypass regulator valve is arranged on the bypass line of water cooler.
The present embodiment introduces PID increment control algorithm method, adjusts bypass line by introducing bypass regulator valve in bypass line
Hot-gas bypass amount, achieve the purpose that unit hot-gas bypass amount is adaptively precisely adjusted.
From the above description it is found that the essential core point of the utility model is: being continuously adjusted to effectively realize
Hot-gas bypass amount, by introducing electrical ball valve in bypass line.When reaching hot-gas bypass unlocking condition, bypass regulation ball valve by
The control of PID delta algorithm passes through the leaving water temperature target value of sensing freezing leaving water temperature and setting within the constant sampling period
Deviation, calculate output release valve ball increment of adjustment, so that reaching hot-gas bypass amount continuously adjusts purpose.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
Above-mentioned the utility model embodiment serial number is for illustration only, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, the technical solution of the utility model is substantially in other words to existing skill
The part that art contributes can be embodied in the form of software products, which is stored in a storage and is situated between
In matter (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that mobile terminal (it can be mobile phone, computer,
Server, air conditioner or network equipment etc.) execute method described in each embodiment of the utility model.
The embodiments of the present invention are described above in conjunction with figure, but the utility model be not limited to it is above-mentioned
Specific embodiment, the above mentioned embodiment is only schematical, rather than restrictive, the common skill of this field
Art personnel are not departing from the utility model aims and scope of the claimed protection situation under the enlightenment of the utility model
Under, many forms can be also made, these are belonged within the protection of the utility model.
Claims (6)
1. a kind of water cooler, which is characterized in that the water cooler includes:
Bypass line, for leading to the exhaust of compressor high-pressure side at compressor low-pressure side air-breathing；
Bypass regulator valve is arranged on the bypass line, for adjusting the gas flow for passing through the bypass line；
Controller, it is true according to the freezing leaving water temperature and pre-set target temperature for obtaining the freezing leaving water temperature of evaporator
Determine increment of adjustment, the aperture of the bypass regulator valve is controlled according to the increment of adjustment.
2. water cooler according to claim 1, which is characterized in that the water cooler further include:
The freezing water outlet of the evaporator is arranged in, for monitoring the evaporator during the sampling period in temperature sensor
Leaving water temperature is freezed, the freezing leaving water temperature is sent to controller.
3. water cooler according to claim 1, which is characterized in that
The controller is also used to carry out pid algorithm processing to the freezing leaving water temperature and the pre-set target temperature, obtain
Increment of adjustment；In the case where the increment of adjustment is greater than zero, the aperture for controlling the bypass regulator valve increases, in the adjusting
In the minus situation of increment, the aperture for controlling the bypass regulator valve is reduced.
4. water cooler according to claim 1, which is characterized in that the water cooler further include: condenser,
The bypass regulator valve is between the condenser and the evaporator.
5. water cooler according to claim 1, which is characterized in that the bypass regulator valve is bypass regulation ball valve.
6. a kind of control device of water cooler, which is characterized in that described device includes:
Module is obtained, for obtaining the freezing leaving water temperature of evaporator；
Processing module, for determining increment of adjustment according to the freezing leaving water temperature and pre-set target temperature；
Control module, for controlling the aperture of bypass regulator valve according to the increment of adjustment；Wherein, the bypass regulator valve setting
On the bypass line of the water cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820961753.2U CN208720559U (en) | 2018-06-21 | 2018-06-21 | A kind of water cooler and its control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820961753.2U CN208720559U (en) | 2018-06-21 | 2018-06-21 | A kind of water cooler and its control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208720559U true CN208720559U (en) | 2019-04-09 |
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ID=65971805
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820961753.2U Active CN208720559U (en) | 2018-06-21 | 2018-06-21 | A kind of water cooler and its control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662798A (en) * | 2018-06-21 | 2018-10-16 | 珠海格力电器股份有限公司 | A kind of handpiece Water Chilling Units and its control method, device |
-
2018
- 2018-06-21 CN CN201820961753.2U patent/CN208720559U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662798A (en) * | 2018-06-21 | 2018-10-16 | 珠海格力电器股份有限公司 | A kind of handpiece Water Chilling Units and its control method, device |
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