CN206449921U - Air-cooled cryogenic refrigerating system - Google Patents
Air-cooled cryogenic refrigerating system Download PDFInfo
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- CN206449921U CN206449921U CN201621398175.3U CN201621398175U CN206449921U CN 206449921 U CN206449921 U CN 206449921U CN 201621398175 U CN201621398175 U CN 201621398175U CN 206449921 U CN206449921 U CN 206449921U
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Abstract
The utility model discloses a kind of air-cooled cryogenic refrigerating system, the suction end of the air-cooled cryogenic refrigerating system includes the tie point and the second branch road of parallel connection, wherein, tie point is connected to the compressor air suction mouthful of air-cooled cryogenic refrigerating system, second branch road needs to shut down heating for improving compressor air suction mouthful temperature the utility model of air-cooled cryogenic refrigerating system and solving after low temperature refrigerator group suction temperature is too low in the prior art, the problem of control program is complex, while preventing that compressor air suction temperature is too low, avoid and shut down because of compression protection, improve unit efficiency.
Description
Technical field
The utility model is related to refrigeration technology field, in particular to a kind of air-cooled cryogenic refrigerating system.
Background technology
Low temperature refrigerator group common compression machine band liquid is run, and suction temperature is too low, or even compressor protection shutdown occurs
Situation, through analyzing reason, be because the refrigerant heat exchange of vaporizer side is insufficient so that the suction temperature of compressor is too low.
For above-mentioned situation, most of refrigeration unit winds electrically heated method using compressor on the market at present, such as presses
Contracting machine band liquid is run, or low voltage closing is protected, and mainboard control electrical heating starts to heat compressor block, makes in compressor
The liquid refrigerants evaporation in portion, after after temperature rising, compressor is started shooting again.This control mode is complex and cost compared with
It is high.
For low temperature refrigerator group suction temperature in correlation technique it is too low after need to shut down and heat, control method is complex
The problem of, not yet propose to efficiently solve scheme at present.
Utility model content
The utility model provides a kind of air-cooled cryogenic refrigerating system, at least to solve low temperature refrigerator group in the prior art
Need to shut down after suction temperature is too low and heat, the problem of control method is complex.
In order to solve the above technical problems, according to the one side of the embodiment of the present disclosure, the utility model provides a kind of wind
Cold cryogenic refrigerating system, wherein, the suction end of air-cooled cryogenic refrigerating system includes the tie point and the second branch road of parallel connection, its
In, tie point is connected to the compressor air suction mouthful of air-cooled cryogenic refrigerating system, and the second branch road is used to improve air-cooled cryogenic refrigeration
The compressor air suction mouthful temperature of system.
Further, the second branch road passes through the condenser of air-cooled cryogenic refrigerating system and is back to compressor air suction mouthful.
Further, the second branch road include the first magnetic valve, for control the second branch road conducting whether.
In the utility model, the suction end of air-cooled cryogenic refrigerating system includes the tie point and the second branch road of parallel connection,
Second branch road can change suction superheat to improve compressor air suction mouthful temperature using the condenser of unit, effective to solve
Need to shut down after low temperature refrigerator group suction temperature is too low in the prior art and heat, the problem of control method is complex prevents
While compressor air suction temperature is too low, it is to avoid the problem of being shut down because compressing protection, unit efficiency is improved.
Brief description of the drawings
Fig. 1 is a kind of optional flow of the control method of the air-cooled cryogenic refrigerating system according to the utility model embodiment
Figure；
Fig. 2 is a kind of optional structure of the control device of the air-cooled cryogenic refrigerating system according to the utility model embodiment
Block diagram；And
Fig. 3 is a kind of optional structural representation of the air-cooled cryogenic refrigerating system according to the utility model embodiment.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the utility model.On the contrary, they be only with such as
The example of the consistent apparatus and method of some aspects being described in detail in appended claims, of the present utility model.
Embodiment 1
A kind of air-cooled cryogenic refrigerating system is provided in embodiments herein 1, Fig. 3 shows a kind of air-cooled cryogenic refrigeration
System, including：Compressor 1, condenser 2, reservoir 3, device for drying and filtering 4, magnetic valve 5, electric expansion valve 6, cutoff
7th, capillary 8, suction filter 9, suction line valve 10, axial-flow leaf 11, the first magnetic valve 12 are constituted.Portion wherein shown in phantom
It is divided into the second branch road of the application 200.Wherein, the suction end (suction filter 9, suction line valve 10) of air-cooled cryogenic refrigerating system
Including the branch road 200 of tie point 100 and second in parallel, wherein, tie point 100 is connected to the pressure of air-cooled cryogenic refrigerating system
Contracting machine air entry, the second branch road 200 is used for the compressor air suction mouthful temperature for improving air-cooled cryogenic refrigerating system.
Further, in the air-cooled cryogenic refrigerating system shown in Fig. 3, wherein part shown in phantom is the branch road of the application second
200 specific implementation, the second branch road 200 include the first magnetic valve 12, for control the second branch road conducting whether.Second
Branch road is by the first magnetic valve 12, the condenser 2 of air-cooled cryogenic refrigerating system and is back to the air entry of compressor 1.
Specifically, specifically, suction end is divided into two-way by this programme in original system, wherein direct all the way
Compressor air suction mouthful is connected to, another road is through magnetic valve, to condenser, returns compressor mouthful.Cardinal principle of the present utility model
It is the relation between the suction superheat by detecting compressor air suction mouthful, control two branches of suction end, if compressor air suction
The degree of superheat of mouth is small, illustrates that suction temperature is too low, and the magnetic valve in now mainboard control branch is opened, and two branches of suction end are simultaneously
Connection, condensed device this all the way, pass through condenser and surrounding air and exchange heat so that this suction temperature increase all the way, Ran Houzai
Converge another road to compressor mouthful, can so change the degree of superheat of air entry, improve the suction temperature of compressor, prevent compression
Machine band liquid；If the degree of superheat for detecting compressor air suction mouthful returns to normal value, mainboard will control closed electromagnetic valve, now inhale
Gas end is equivalent to only all the way, as original system.
The utility model main innovation point is to change suction superheat using the condenser of unit, and this has with other schemes
Significant difference.The utility model enough ensures low temperature refrigerator group operation without shutting down for a long time, and the efficiency for unit is come
Say and there has also been significant raising.
Embodiment 2
The control method for the air-cooled cryogenic refrigerating system that 1 pair of the utility model is provided is illustrated below in conjunction with the accompanying drawings.
A kind of control method of optional air-cooled cryogenic refrigerating system is provided in embodiment 1 of the present utility model, wherein,
The suction end of air-cooled cryogenic refrigerating system includes the tie point and the second branch road of parallel connection, wherein, tie point is connected to air-cooled
The compressor air suction mouthful of cryogenic refrigerating system, the second branch road is used for the compressor air suction mouthful temperature for improving air-cooled cryogenic refrigerating system
Degree, specifically, Fig. 1 shows a kind of optional flow chart of the control method of this air-cooled cryogenic refrigerating system, as shown in figure 1,
The control method of the air-cooled cryogenic refrigerating system may comprise steps of S102-S106：
S102, obtains the degree of superheat of compressor air suction mouthful；
Preferably, can be by obtaining the temperature-sensitive of correspondence position when being compressed the acquisition of the degree of superheat of machine air entry
The temperature information of collection and the pressure information of pressure sensor collection is wrapped to realize.Specifically, compressor can first be obtained
The temperature and pressure of air entry；It is then determined that the corresponding saturation temperature of pressure of compressor air suction mouthful；Inhaled finally according to compressor
The corresponding saturation temperature of pressure of temperature and the compressor air suction mouth of gas port, calculates the degree of superheat of compressor air suction mouthful.
S104, the compressor air suction mouth temperature for judging air-cooled cryogenic refrigerating system according to the degree of superheat of compressor air suction mouthful is
It is no to meet Elevated Temperature Conditions；
When implementing, it may include steps of：By the degree of superheat of compressor air suction mouthful and the first preset temperature threshold value
It is compared；When the degree of superheat of compressor air suction mouthful is less than the first preset temperature threshold value, air-cooled cryogenic refrigerating system is judged
Compressor air suction mouthful temperature meets Elevated Temperature Conditions.
S106, if judged result is meets, the compressor air suction mouthful of air-cooled cryogenic refrigerating system is improved by the second branch road
Temperature.
Preferably, the second branch road passes through the condenser of air-cooled cryogenic refrigerating system and is back to compressor air suction mouthful, second
Branch road includes the first magnetic valve whether turned on for being used to control second branch road, when stating step S106 in realization, Ke Yifa
Control signal is sent to open the first magnetic valve so that the second branch road is in the conduction state.
Specifically, suction end is divided into two-way by this programme in original system, wherein being attached directly to compressor all the way
Air entry, another road is through magnetic valve, to condenser, returns compressor mouthful.Cardinal principle of the present utility model is by detection
Relation between the suction superheat of compressor air suction mouthful, control two branches of suction end, if the degree of superheat of compressor air suction mouthful
It is small, illustrate that suction temperature is too low, the magnetic valve in now mainboard control branch is opened, and two branch parallel connections of suction end are condensed
Device this all the way, pass through condenser and surrounding air and exchange heat so that this suction temperature increase all the way, another road is then converged again
It to compressor mouthful, can so change the degree of superheat of air entry, improve the suction temperature of compressor, prevent compressor band liquid；Such as
The degree of superheat that fruit detects compressor air suction mouthful returns to normal value, and mainboard will control closed electromagnetic valve, and now suction end is suitable
In only all the way, as original system.
The utility model main innovation point is to change suction superheat using the condenser of unit, and this has with other schemes
Significant difference.The utility model enough ensures low temperature refrigerator group operation without shutting down for a long time, and the efficiency for unit is come
Say and there has also been significant raising.
It is above-mentioned preferred embodiment in, the suction end of air-cooled cryogenic refrigerating system includes tie point in parallel and the
Two branch roads, second branch road can change suction superheat to improve compressor air suction mouthful temperature using the condenser of unit, have
The solution of effect needs to shut down heating after low temperature refrigerator group suction temperature is too low in the prior art, and control method is complex to ask
Topic, while prevent that compressor air suction temperature is too low, it is to avoid the problem of being shut down because compressing protection.
Embodiment 3
Based on the control method of the air-cooled cryogenic refrigerating system provided in above-described embodiment 2, the utility model is optionally real
Apply example 3 and additionally provide a kind of control device of air-cooled cryogenic refrigerating system, wherein, the suction end of air-cooled cryogenic refrigerating system includes
Tie point in parallel and the second branch road, wherein, tie point is connected to the compressor air suction mouthful of air-cooled cryogenic refrigerating system, the
Two branch roads are used for the compressor air suction mouthful temperature for improving air-cooled cryogenic refrigerating system, and specifically, Fig. 2 shows one kind of the device
Optional structured flowchart, as shown in Fig. 2 the device includes：Acquiring unit 22, the degree of superheat for obtaining compressor air suction mouthful；
Judging unit 24, the compressor air suction mouthful temperature for judging air-cooled cryogenic refrigerating system according to the degree of superheat of compressor air suction mouthful
Whether Elevated Temperature Conditions are met；Control unit 26, if for judged result to meet, air-cooled cryogenic refrigeration is improved by the second branch road
The compressor air suction mouthful temperature of system.
Further, judging unit includes：Comparison module, for the degree of superheat of compressor air suction mouthful is default warm with first
Degree threshold value is compared；Determination module, for when the degree of superheat of compressor air suction mouthful is less than the first preset temperature threshold value, judging
The compressor air suction mouthful temperature of air-cooled cryogenic refrigerating system meets Elevated Temperature Conditions.
Further, the second branch road passes through the condenser of air-cooled cryogenic refrigerating system and is back to compressor air suction mouthful, the
Two branch roads include the first magnetic valve whether turned on for being used to control second branch road, and control unit includes：Control module, is used for
Send control signal and open the first magnetic valve so that the second branch road is in the conduction state.
Further, acquiring unit includes：Acquisition module, the temperature and pressure for obtaining compressor air suction mouthful；It is determined that
Module, the corresponding saturation temperature of pressure for determining compressor air suction mouthful；Computing module, for according to compressor air suction mouthful
The corresponding saturation temperature of pressure of temperature and compressor air suction mouthful, calculates the degree of superheat of compressor air suction mouthful.
Specifically, suction end is divided into two-way by this programme in original system, wherein being attached directly to compressor all the way
Air entry, another road is through magnetic valve, to condenser, returns compressor mouthful.Cardinal principle of the present utility model is by detection
Relation between the suction superheat of compressor air suction mouthful, control two branches of suction end, if the degree of superheat of compressor air suction mouthful
It is small, illustrate that suction temperature is too low, the magnetic valve in now mainboard control branch is opened, and two branch parallel connections of suction end are condensed
Device this all the way, pass through condenser and surrounding air and exchange heat so that this suction temperature increase all the way, another road is then converged again
It to compressor mouthful, can so change the degree of superheat of air entry, improve the suction temperature of compressor, prevent compressor band liquid；Such as
The degree of superheat that fruit detects compressor air suction mouthful returns to normal value, and mainboard will control closed electromagnetic valve, and now suction end is suitable
In only all the way, as original system.
On the device in above-described embodiment, wherein unit, module performs the concrete mode of operation relevant
It is described in detail in the embodiment of this method, explanation will be not set forth in detail herein.
It can be seen from the foregoing description that in embodiment of the present utility model, the suction end of air-cooled cryogenic refrigerating system
Including tie point and the second branch road in parallel, second branch road can change suction superheat using the condenser of unit to carry
High compressor air entry temperature, it is effective to solve to need to shut down after low temperature refrigerator group suction temperature is too low in the prior art to add
Heat, the problem of control method is complex, while preventing that compressor air suction temperature is too low, it is to avoid shut down because of compression protection
The problem of.
Those skilled in the art will readily occur to this practicality after considering specification and putting into practice utility model disclosed herein
New other embodiments.The application is intended to any modification of the present utility model, purposes or adaptations, these
Modification, purposes or adaptations follow general principle of the present utility model and including the non-utility model of the utility model
Common knowledge or conventional techniques in the art.Description and embodiments are considered only as exemplary, and this practicality is new
The true scope and spirit of type are pointed out by following claim.
It should be appreciated that the accurate knot that the utility model is not limited to be described above and is shown in the drawings
Structure, and various modifications and changes can be being carried out without departing from the scope.Scope of the present utility model only will by appended right
Ask to limit.
Claims (3)
1. a kind of air-cooled cryogenic refrigerating system, it is characterised in that the suction end of the air-cooled cryogenic refrigerating system includes in parallel
Tie point and the second branch road, wherein, the tie point is connected to the compressor air suction mouthful of air-cooled cryogenic refrigerating system, described
Second branch road is used for the compressor air suction mouthful temperature for improving the air-cooled cryogenic refrigerating system.
2. system according to claim 1, it is characterised in that second branch road passes through the air-cooled cryogenic refrigerating system
Condenser and be back to the compressor air suction mouthful.
3. system according to claim 2, it is characterised in that second branch road includes the first magnetic valve, for controlling
Whether is the conducting of second branch road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621398175.3U CN206449921U (en) | 2016-12-19 | 2016-12-19 | Air-cooled cryogenic refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621398175.3U CN206449921U (en) | 2016-12-19 | 2016-12-19 | Air-cooled cryogenic refrigerating system |
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| Publication Number | Publication Date |
|---|---|
| CN206449921U true CN206449921U (en) | 2017-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621398175.3U Active CN206449921U (en) | 2016-12-19 | 2016-12-19 | Air-cooled cryogenic refrigerating system |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204689A (en) * | 2016-12-19 | 2018-06-26 | 珠海格力电器股份有限公司 | Air-cooled cryogenic refrigerating system and its control method, device |
-
2016
- 2016-12-19 CN CN201621398175.3U patent/CN206449921U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204689A (en) * | 2016-12-19 | 2018-06-26 | 珠海格力电器股份有限公司 | Air-cooled cryogenic refrigerating system and its control method, device |
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