CN208887191U - A kind of unit - Google Patents
A kind of unit Download PDFInfo
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- CN208887191U CN208887191U CN201821412403.7U CN201821412403U CN208887191U CN 208887191 U CN208887191 U CN 208887191U CN 201821412403 U CN201821412403 U CN 201821412403U CN 208887191 U CN208887191 U CN 208887191U
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- Prior art keywords
- master controller
- water temperature
- water
- ratio
- unit
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Abstract
The utility model discloses a kind of unit.Wherein, which includes: master controller, when being lower than default water temperature for the water temperature at condenser inlet pipeline, sends regulating command to proportion valve；Proportion valve is connect positioned at the water inlet of condenser inlet pipeline with master controller, for adjusting the ratio of itself, accordingly to reduce the flow of inlet water of condenser inlet pipeline after receiving regulating command.By the utility model, employable proportion valve reduces the flow of inlet water of condenser inlet pipeline, so that water temperature increases, i.e., condensation temperature increases, to guarantee condensing pressure in suitable range.The operation steady in a long-term of unit can be ensured as a result,.
Description
Technical field
The utility model relates to unit fields, in particular to a kind of unit.
Background technique
Currently, marine air conditioner generallys use seawater or river to be cooled down, and then to cooling down in cabin.It is peculiar to vessel
The running parameter of air-conditioner set is mostly designed according to this operating condition of summer.But when in winter, part calorific value is biggish to be set
Standby cabin and the inner region cabin of large vessel still need to unlatching air-conditioning and freeze.But when water temperature is too low, unit can be made cold
Solidifying pressure is relatively low, causes the refrigerating operaton of air-conditioner set to have exceeded the range of operation of compressor, influences the fortune steady in a long-term of unit
Row, or even damage compressor.
For under special operation condition (cryogenic refrigeration), condensing pressure is relatively low to cause unit to be unable to operate stably in the prior art
The problem of, currently no effective solution has been proposed.
Utility model content
A kind of unit is provided in the utility model embodiment, to solve in the prior art in special operation condition (cryogenic refrigeration)
Under, condensing pressure relatively low the problem of causing unit to be unable to operate stably.
In order to solve the above technical problems, the unit includes: master in a first aspect, the utility model provides a kind of unit
Controller, proportion valve；
The master controller, when being lower than default water temperature for the water temperature at condenser inlet pipeline, Xiang Suoshu proportioning valve
Door sends regulating command；
The proportion valve connect with the master controller, is used for positioned at the water inlet of the condenser inlet pipeline
After receiving the regulating command, the ratio of itself is adjusted, accordingly to reduce the flow of inlet water of the condenser inlet pipeline.
Further, the unit further include:
Temperature detector is located on condenser inlet pipeline, for detecting the water temperature at condenser inlet pipeline, and will
The water temperature detected is sent to the master controller.
Further, the master controller is also used to determine the difference of the water temperature Yu the default water temperature, according to described
Proportion valve described in range restraint locating for difference is correspondingly adjusted to ratio corresponding with the section, to reduce the feed water flow
Amount.
Further, the master controller is also used to reduce the first of the flow of inlet water in the control proportion valve
After preset time period, controls the proportion valve and adjust to preset ratio and maintain the second preset time period, to improve feed water flow
Speed；Wherein, first preset time period, the section, there is between the preset ratio one-to-one relationship.
Further, the master controller is also used to after second preset time period, controls the proportion valve
Restore to initial proportion.
Further, the unit further include: hot gas bypass valve, it is and described on the bypass circulation of the condenser
Master controller connection；
The master controller, for controlling the hot-gas bypass when the preset ratio is greater than or equal to proportion threshold value
Valve is opened；After second preset time period, controls the hot gas bypass valve and close.
Further, the unit further include: frequency-changeable compressor,
The master controller is also used to control the frequency conversion pressure when the preset ratio is greater than or equal to proportion threshold value
Contracting machine low-frequency operation；After second preset time period, controls the frequency-changeable compressor and restore to initial operating state.
Further, the proportion valve is ratio two regulating valves.
Using the technical solution of the utility model, unit includes: master controller, proportion valve；Master controller, for when cold
When water temperature at condenser inlet pipeline is lower than default water temperature, regulating command is sent to proportion valve；Proportion valve is located at condenser
The water inlet of inlet pipeline, connect with master controller, for accordingly adjusting the ratio of itself after receiving regulating command, with
Reduce the flow of inlet water of condenser inlet pipeline.As a result, when water temperature is lower than default water temperature, it is relatively low to be easy to appear condensing pressure
Situation, employable proportion valve reduces the flow of inlet water at condenser inlet pipeline at this time, so that water temperature increases, that is, condenses
Temperature increases, to guarantee condensing pressure in suitable range, ensure that the refrigerating operaton of unit without departing from compressor
Operational envelope has ensured the operation steady in a long-term of unit.
Detailed description of the invention
Fig. 1 is the structural block diagram according to a kind of unit of the utility model embodiment；
Fig. 2 is the structural schematic diagram according to a kind of unit 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.
In order to solve in the prior art under special operation condition (cryogenic refrigeration), condensing pressure is relatively low to cause unit that can not stablize
The problem of operation, the utility model embodiment provide a kind of unit, as shown in Figure 1, unit includes: master controller 1, proportion valve
2；
Master controller 1 when being lower than default water temperature for the water temperature at 3 inlet pipeline of condenser, is sent to proportion valve 2
Regulating command；
Proportion valve 2 is connect positioned at the water inlet of 3 inlet pipeline of condenser with master controller 1, for receiving tune
After section instruction, the ratio of itself is adjusted, accordingly to reduce the flow of inlet water of 3 inlet pipeline of condenser.
As a result, when water temperature is lower than default water temperature, it is easy to appear the relatively low situation of condensing pressure, at this time employable proportion valve
Door 2 reduces the flow of inlet water at 3 inlet pipeline of condenser, so that water temperature increases, i.e., condensation temperature increases, to guarantee cold
Solidifying pressure ensures the operation steady in a long-term of unit in suitable range.
The technical solution of the utility model embodiment is illustrated so that unit is marine air conditioner device as an example.It is existing peculiar to vessel
Shell-tube type, bushing type etc. can be used in the heat exchanger (condenser) of air conditioner, and is cooled down mostly using seawater, river etc..
The water flow velocity of heat exchanger water inlet is generally arranged at 1~2m/s.The cooling water of this flow velocity can guarantee higher heat exchange efficiency,
And there is certain ability for washing away silt sediment, also, the resistance of the cooling water of this flow velocity is relatively reasonable, it can avoid water pump
Generate more ineffective power consumption.But the air conditioner can not guarantee the safe and stable operation of unit when water temperature is lower.And this Shen
Embodiment please can then solve the problems, such as this.
In one possible implementation, it when the water temperature at 3 inlet pipeline of condenser is lower than default water temperature, will cause
The lowest threshold of the relatively low even lower than unit condensing pressure of condensing pressure, and to guarantee the safe operation of compressor, condensation pressure
Power should be in preset condensing pressure range.That is, the safe operation of compressor, condensing pressure range and default water
There is certain corresponding relationship between temperature.Default water temperature can be determined according to the corresponding relationship, and by the corresponding relationship and is preset
Water temperature is stored, in order to the basis of reference as current water temperature.
In one possible implementation, as shown in Fig. 2, unit further include: temperature detector is located at condenser 3
On inlet pipeline, for detecting the water temperature at 3 inlet pipeline of condenser, and the water temperature that will test is sent to master controller 1.Its
In, temperature detector can be water temperature temperature sensing package or temperature sensor.Temperature detector shown in Fig. 2 is water temperature temperature-sensitive
Packet 4.And case tube heat exchanger 3 shown in Fig. 2 is condenser 3.
In one possible implementation, as shown in Fig. 2, proportion valve 2 can be electronic two-way ratio adjusting valve 2,
The ratio of proportion valve 2 can be adjusted according to the actual situation.It is understood that if the difference of water temperature and default water temperature compared with
Small, then correspondingly, the degree that condensing pressure deviates normal range (NR) is also smaller.At this point, only needing reduction flow of inlet water by a small margin, make
Water temperature is gone up to a certain extent.And when the difference of water temperature and default water temperature is larger, then correspondingly, condensing pressure deviates normal
The degree of range is larger.At this point, flow of inlet water need to be greatly reduced, water temperature is allow to accelerate to go back up to default water temperature.Exist as a result,
In a kind of preferred implementation, master controller 1 is also used to determine the difference of water temperature and default water temperature, according to locating for difference
Range restraint proportion valve 2 is correspondingly adjusted to ratio corresponding with section, to reduce flow of inlet water.
As a result, can according between water temperature, water flow, the ratio of proportion valve 2 linkage and corresponding relationship adjust ratio
The ratio of valve 2 guarantees higher heat exchange efficiency while guaranteeing unit safety stable operation, avoids water pump from generating more
Useless power consumption.
In one possible implementation, master controller 1 is also used to reduce flow of inlet water in control proportion valve 2
After first preset time period, control proportion valve 2 adjusts to preset ratio and maintains the second preset time period, to improve feed water flow
Speed；Wherein, the first preset time period, section, there is between preset ratio one-to-one relationship.
It is understood that water flow velocity also can be relatively slow if water flow is less, it is be easy to cause the deposition of silt, and is made
Fouling is blocked at the inlet pipeline (heat exchanger tube) of condenser 3, influences heat exchange efficiency, or even unit is caused to be unable to run, serious feelings
Condenser 3 can be damaged under condition.Based on this, after the first preset time period, suitably proportion valve 2 can be opened greatly, to improve water inlet
Flow, so that water flow velocity increases and scouring sediment.It is similar with above-described embodiment principle, when temperature gap is smaller, water flow quantitative change
Change amplitude is little, still higher, and water flow velocity also can be very fast at this time, and correspondingly, sedimentation rate is slower, then the first preset time
Can be longer, the second preset time can be shorter, can adjust the ratio of proportion valve 2 according to the actual situation as a result, ensure that
While scouring sediment, useless energy consumption is avoided.
Wherein, in order to guarantee in the second preset time period, silt underwashing is clean, biggish water flow velocity can be designed, is selected
Reasonable water flow velocity upper limit value is selected, such as: 1.5~2.5m/s.
In one possible implementation, as shown in Fig. 2, unit further include: hot gas bypass valve 5, positioned at condenser 3
On bypass circulation, it is connect with master controller 1；Master controller 1, for controlling when preset ratio is greater than or equal to proportion threshold value
Hot gas bypass valve 5 is opened；After the second preset time period, control hot gas bypass valve 5 is closed.
In the silt underwashing stage, if preset ratio is greater than or equal to proportion threshold value, illustrate, current water flow compared with
Greatly, water flow velocity is very fast, then be easy to cause drastically reducing for water temperature, condensation temperature and condensing pressure, to influence the steady of unit
Fixed operation.Then it can control hot gas bypass valve 5 in this stage and open, be drastically reduced to avoid condensing pressure, further protect machine
Group.
In one possible implementation, unit further include: frequency-changeable compressor 6,
Master controller 1 is also used to when preset ratio is greater than or equal to proportion threshold value, control frequency-changeable compressor low frequency fortune
Row；After the second preset time period, control frequency-changeable compressor restores to initial operating state.
It is understood that the condensing pressure value needed is lower when 6 low-frequency operation of frequency-changeable compressor, then compressor is controlled
It is temporarily run with low frequency state, is conducive to the safety for protecting unit.
It should be noted that above two implementation can select an execution, can also execute parallel, the utility model to this not
It is restricted.Compressor 6 shown in Fig. 2 can be frequency-changeable compressor 6.
In one possible implementation, unit further include:
Master controller 1 is also used to after the second preset time period, and control proportion valve 2 restores to initial proportion.
After the second preset time period, proportion valve 2 can control to restore initial proportion.I.e. one adjustment process terminates.It can
Again the water temperature of 3 inlet pipeline of condenser is detected.When detecting water temperature, can according to the actual situation selection cycle detection mode or
Real-time detection, at times detection etc..
The utility model is described further with a concrete application example below.
Increase water temperature temperature sensing package 4 on 3 inlet pipeline of condenser to measure water temperature, when water temperature is lower than particular value T water temperature
When (such as: 5 DEG C), ratio two regulating valves are turned down to reduce water flow, to guarantee condensing pressure within a preset range.Unit fortune
After row T1 minutes (T1 can be determined by testing according to sediment settlement rate, such as: T1 is 30 minutes), standard-sized sheet ratio two-way
Regulating valve, to improve water flow velocity, so that the silt to deposition washes away.Because of standard-sized sheet ratio two regulating valves 2 during washing away
Cooling water inflow afterwards is too big, will cause condensation temperature and sharply declines, at this time the solenoid valve of openable 3 bypass circulation of condenser, i.e.,
Hot gas bypass valve 5 carries out hot-gas bypass, guarantees the condensing pressure of compressor not less than preset range.(T2 points after washing away T2 minutes
Clock can be determined according to the effect of silt underwashing by test, if T2 is 5 minutes), ratio two regulating valves are opened big to original
Setting value (original state) closes hot gas bypass valve.Compressor low-frequency operation can also be controlled in T2 minutes.Above-mentioned process can
Periodic cycle executes.
In one possible implementation, as shown in Fig. 2, case tube heat exchanger 3 and compressor 6, evaporator 7, electronics are swollen
Swollen valve 8, hot gas bypass valve 5 are successively linked in sequence, and vaporizer side is provided with motor 9 and blower 10.
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 (8)
1. a kind of unit, which is characterized in that the unit includes: master controller, proportion valve；
The master controller, when being lower than default water temperature for the water temperature at condenser inlet pipeline, Xiang Suoshu proportion valve hair
Send regulating command；
The proportion valve is connect positioned at the water inlet of the condenser inlet pipeline with the master controller, for connecing
After receiving the regulating command, the ratio of itself is accordingly adjusted, to reduce the flow of inlet water of the condenser inlet pipeline.
2. unit according to claim 1, which is characterized in that the unit further include:
Temperature detector is located on condenser inlet pipeline, for detecting the water temperature at condenser inlet pipeline, and will test
To the water temperature be sent to the master controller.
3. unit according to claim 1, which is characterized in that
The master controller is also used to determine the difference of the water temperature Yu the default water temperature, according to area locating for the difference
Between control the proportion valve and be correspondingly adjusted to ratio corresponding with the section, to reduce the flow of inlet water.
4. unit according to claim 3, which is characterized in that
The master controller is also used to after controlling the proportion valve and reducing the first preset time period of the flow of inlet water,
It controls the proportion valve to adjust to preset ratio and maintain the second preset time period, to improve water inlet flow velocity；
Wherein, first preset time period, the section, there is between the preset ratio one-to-one relationship.
5. unit according to claim 4, which is characterized in that
The master controller is also used to after second preset time period, is controlled the proportion valve and is restored to initial ratio
Example.
6. unit according to claim 4, which is characterized in that
The unit further include: hot gas bypass valve is connect on the bypass circulation of the condenser with the master controller；
The master controller, for controlling the hot gas bypass valve and opening when the preset ratio is greater than or equal to proportion threshold value
It opens；After second preset time period, controls the hot gas bypass valve and close.
7. unit according to claim 4, which is characterized in that the unit further include: frequency-changeable compressor,
The master controller is also used to control the frequency-changeable compressor when the preset ratio is greater than or equal to proportion threshold value
Low-frequency operation；After second preset time period, controls the frequency-changeable compressor and restore to initial operating state.
8. unit according to any one of claims 1-7, which is characterized in that
The proportion valve is ratio two regulating valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821412403.7U CN208887191U (en) | 2018-08-30 | 2018-08-30 | A kind of unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821412403.7U CN208887191U (en) | 2018-08-30 | 2018-08-30 | A kind of unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208887191U true CN208887191U (en) | 2019-05-21 |
Family
ID=66510551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821412403.7U Withdrawn - After Issue CN208887191U (en) | 2018-08-30 | 2018-08-30 | A kind of unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208887191U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186153A (en) * | 2018-08-30 | 2019-01-11 | 珠海格力电器股份有限公司 | A kind of unit and the method, apparatus for controlling its stable operation |
| US20220364759A1 (en) * | 2019-09-26 | 2022-11-17 | Gd Midea Air-Conditioning Equipment Co., Ltd. | Air conditioner, control method thereof and readable storage medium |
-
2018
- 2018-08-30 CN CN201821412403.7U patent/CN208887191U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186153A (en) * | 2018-08-30 | 2019-01-11 | 珠海格力电器股份有限公司 | A kind of unit and the method, apparatus for controlling its stable operation |
| CN109186153B (en) * | 2018-08-30 | 2023-09-08 | 珠海格力电器股份有限公司 | Unit and method and device for controlling stable operation of unit |
| US20220364759A1 (en) * | 2019-09-26 | 2022-11-17 | Gd Midea Air-Conditioning Equipment Co., Ltd. | Air conditioner, control method thereof and readable storage medium |
| US11988402B2 (en) * | 2019-09-26 | 2024-05-21 | Gd Midea Air-Conditioning Equipment Co., Ltd. | Air conditioner, control method thereof and readable storage medium |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190521 Effective date of abandoning: 20230908 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190521 Effective date of abandoning: 20230908 |