CN109827359A - A kind of refrigeration equipment - Google Patents
A kind of refrigeration equipment Download PDFInfo
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- CN109827359A CN109827359A CN201811455584.6A CN201811455584A CN109827359A CN 109827359 A CN109827359 A CN 109827359A CN 201811455584 A CN201811455584 A CN 201811455584A CN 109827359 A CN109827359 A CN 109827359A
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- air inlet
- connecting line
- refrigeration equipment
- pressure
- detection device
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Abstract
The invention discloses a kind of refrigeration equipments, and compressor, evaporator and condenser including forming refrigeration cycle, compressor are equipped with air inlet and air outlet, and air inlet is connected with evaporator by air inlet pipeline, and gas outlet is connected with condenser by gas exhaust piping；It is characterized in that, air inlet pipeline offers the first bypass interface, gas exhaust piping is equipped with the second bypass interface, and the first bypass interface and the second bypass interface are connected by a connecting line, and connecting line is equipped with the control valve of opening and closing connecting line.The present invention increases connecting line newly in existing air inlet pipeline and gas exhaust piping, and the control valve of control connecting line opening and closing is equipped on pipeline, when compressor frequency reduces, control valve is opened, pressure between its air inlet pipeline and gas exhaust piping is balanced, the pressure reduction of surge source, no surge hidden danger are made, and then the service life for extending compressor increases, and keeps the whole system running of refrigeration equipment more reliable and more stable.
Description
Technical field
The present invention relates to refrigeration technology fields, and in particular to a kind of refrigeration equipment.
Background technique
Air-conditioning system often bears the operating condition of the more limit, such as cold side or freezing in operation use process
Side passes in and out the quick variation of water temperature, and the aperture and speed of electric expansion valve mismatch adjusting etc., all centrifugal chiller can be caused to transport
Surge occurs during row.Surge can cause compressor action component and stationary parts generation to rub, and compressor action part
Scratch will lead to compressor service life and be greatly diminished, air conditioner is easy to appear various protection exceptions, air-conditioning system operation
Reliability is impacted simultaneously, and each important component becomes fragile.
Summary of the invention
The first object of the present invention is to provide a kind of refrigeration equipment, to solve the problems, such as existing compressor surge.
To achieve the above object, technical solution proposed by the present invention is as follows:
A kind of refrigeration equipment, including formed refrigeration cycle compressor, evaporator and condenser, the compressor be equipped with into
Port and gas outlet, the air inlet are connected with the evaporator by air inlet pipeline, the gas outlet and the condenser
It is connected by gas exhaust piping；It is characterized in that, the air inlet pipeline offers the first bypass interface, the gas exhaust piping is equipped with
Second bypass interface, the first bypass interface and the second bypass interface are connected by connecting line, the connecting tube
Road is equipped with the control valve for being opened and closed the connecting line.
The refrigeration equipment provided according to the present invention increases connecting line in existing air inlet pipeline and gas exhaust piping, and
On pipeline be equipped with control connecting line opening and closing control valve, when compressor frequency reduce when, control valve is opened, balance its into
Pressure between air pipe and gas exhaust piping makes the pressure reduction of surge source, no surge hidden danger, and then extends the use longevity of compressor
Life increases, and keeps the whole system running of refrigeration equipment more reliable and more stable.
An example according to the present invention further includes control device, first pressure detection device and second pressure detection dress
It sets, the first pressure detection device is used to detect the evaporating pressure in the evaporator, and the second pressure detection device is used
Condensing pressure in the detection condenser；The control device respectively with first pressure detection device and the second pressure
Detection device electrical connection, the control device are opened and closed the control according to the difference of the condensing pressure and the evaporating pressure
Valve.
An example according to the present invention, further includes the first temperature-detecting device and second temperature detection device, and described
One temperature-detecting device is used to detect the refrigerant temperature in air inlet pipeline, and the second temperature detection device is for detecting exhaust pipe
Refrigerant temperature in road.
The difference of an example according to the present invention, the condensing pressure and the evaporating pressure is Y, when detecting Y1 > Y
When > Y2, the control valve keeps current action state；Wherein, Y1=KX+B, Y2=KX+B-35, X are in air inlet pipeline
The difference of refrigerant temperature in refrigerant temperature and outlet pipe, K=20-80, B=20-80.An example according to the present invention,
As Y >=Y1, the control valve opens the connecting line.
An example according to the present invention, as Y≤Y2, the control valve closes the connecting line.
An example according to the present invention further includes that the electric current holding meanss being connected with compressor and voltage keep dress
It sets；The control device is electrically connected with the electric current holding meanss and the voltage retaining device respectively.
An example according to the present invention, the electric current holding meanss and voltage retaining device are the first priority acccess control grade,
The control valve is the second priority acccess control grade.
An example according to the present invention, the control valve are electric expansion valve or solenoid valve.
An example according to the present invention, the connecting line and the first bypass interface and/or second bypass
Interface flange connection.
The advantages of above additional aspect, will be set forth in part in the description, and partially will become from the following description bright
It is aobvious, or practice through the invention recognizes.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the refrigeration equipment of the embodiment of the present invention.
In attached drawing, parts list represented by the reference numerals are as follows:
1, compressor；2, air inlet pipeline；3, gas exhaust piping；4, the first bypass interface；5, the second bypass interface；6, connecting tube
Road；7, control valve；8, evaporator；9, condenser；10, throttling set.
Embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
In conjunction with shown in attached drawing 1, a kind of refrigeration equipment is present embodiments provided, including forming the compressor 1 of refrigeration cycle, steaming
Device 8 and condenser 9 are sent out, compressor 1 is equipped with air inlet and air outlet, and air inlet is connected with evaporator 8 by air inlet pipeline 2,
Gas outlet is connected with condenser 9 by gas exhaust piping 3；Piping connection between evaporator 8 and condenser 9, and in 8 He of evaporator
Refrigerant pipeline between condenser 9 is equipped with throttling set 10.Above structure is the basic structure of existing refrigeration equipment, therefore is closed
In all parts structurally and functionally and how to realize refrigeration cycle the present embodiment without excessively describing.
Inventors have found that the generation main cause of above structure surge phenomenon is that 1 running frequency of compressor is low under high pressure ratio,
Revolving speed is slow, causes the condensing pressure in condenser 9 to be greater than pressure at expulsion, 9 gas of condenser is toward reflux at compressor 1 to thrust shaft
Generation impact force is held, sound partial frictional is caused.
Therefore inventor the refrigeration equipment of the present embodiment is improved, specifically the improvement is that: the present embodiment into
At least one first bypass interface 4 is offered on air pipe 2, at least one second bypass interface 5 is equipped on gas exhaust piping 3,
First bypass interface 4 is connected with the second bypass interface 5 by a connecting line 6 (being also possible to multiple), is set on connecting line 6
There is the control valve 7 of opening and closing connecting line 6, control valve 7 is electric expansion valve or solenoid valve；The connecting line 6 of the present embodiment is opposite
Both ends bypass 5 flanged joint of interface with the first bypass interface 4 and second respectively.
When 1 frequency of compressor reduces, control valve 7 is opened, pressure between its air inlet pipeline 2 and gas exhaust piping 3 is balanced,
Make the pressure reduction of surge source, no surge hidden danger, and then the service life for extending compressor 1 increases, and makes the refrigeration equipment integrally be
It runs more reliable and more stable.
Based on above structure, the refrigeration equipment of the present embodiment further includes control device, first pressure detection device and second
Pressure-detecting device (is not shown) in figure, and control device is the master control device of refrigeration equipment, can be existing refrigeration equipment
Common processor etc., first pressure detection device and second pressure detection device can be pressure sensor.
The first pressure detection device of the present embodiment is used to detect the evaporating pressure in evaporator 8, second pressure detection dress
It sets for detecting the condensing pressure in condenser 9, evaporating pressure is when becoming gaseous state by liquid in the case that refrigerant temperature is certain
Maximum pressure, condensing pressure are minimum pressure when becoming liquid in the case that refrigerant temperature is certain by gaseous state, control device difference
It is electrically connected with first pressure detection device and second pressure detection device, control device is according to the difference of condensing pressure and evaporating pressure
It is worth open and close control valve 7.
In addition, the refrigeration equipment of the present embodiment further includes the first temperature-detecting device and second temperature detection device (in figure
It is not shown), the first temperature-detecting device is used to detect the refrigerant temperature in air inlet pipeline 2, and second temperature detection device is for examining
Survey the refrigerant temperature in gas exhaust piping 3.
The control device of the present embodiment according to the detailed process of condensing pressure and the difference open and close control valve 7 of evaporating pressure such as
Under:
It first passes through first pressure detection device and second pressure detection device detects evaporating pressure and condensing pressure respectively, control
Device processed calculates the difference of condensing pressure and evaporating pressure, and the difference of the two is Y, and when to Y1 > Y > Y2, the holding of control valve 7 is worked as
Preceding action state is kept open if control valve 7 at this time is opened, remain turned-off if control valve 7 at this time is closed
State.As Y >=Y1, control valve 7 opens connecting line 6.As Y≤Y2, control valve 7 closes connecting line 6.
Above-mentioned Y1=KX+B, above-mentioned Y2=KX+B-35.Wherein, X is the refrigerant temperature and outlet in air inlet pipeline 2
The difference of refrigerant temperature in pipeline, K=2-10, B=20-80.Based on above structure, the refrigeration equipment of the present embodiment further includes
The electric current holding meanss voltage retaining device being connected with compressor 1；Control device is protected with electric current holding meanss and voltage respectively
Hold device electrical connection.Electric current holding meanss can be the devices such as current converter, and voltage retaining device can be the devices such as transformer
Part, voltage retaining device have the function of that high pressure is kept and low pressure keeps function.It should be noted that above-mentioned " holding " refers to
So that current or voltage is in certain preset range, it is excessively low/high and influence the operation of complete machine to avoid the occurrence of current or voltage.
Wherein, it is first preferential that electric current, which keeps function, low pressure that function and high pressure is kept to keep the control priority level of function,
Grade, the control priority level of anti-asthma function are the second priority, i.e., control device control voltage retaining device and electric current keep dress
The priority level set is greater than the priority level for controlling above-mentioned control valve 7.
In the description of the present invention, it is to be understood that, term " on ", "lower", "left", "right", "inner", "outside" etc. indicate
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, rather than the device of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, Bu Nengli
Solution is limitation of the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicit includes one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more, unless otherwise
Clear specific restriction.
In the present invention unless specifically defined or limited otherwise, the terms such as term " installation ", " connected ", " connection " are answered
It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or is integral etc..For the common of this field
For technical staff, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (9)
1. a kind of refrigeration equipment, compressor (1), evaporator (8) and condenser (9) including forming refrigeration cycle, the compression
Machine (1) is equipped with air inlet and air outlet, and the air inlet and the evaporator (8) are connected by air inlet pipeline (2), it is described out
Port is connected with the condenser (9) by gas exhaust piping (3)；It is characterized in that, the air inlet pipeline (2) offers first
It bypasses interface (4), the gas exhaust piping (3) is equipped with the second bypass interface (5), first bypass interface (4) and described second
Bypass interface (5) is connected by connecting line (6), and the connecting line (6) is equipped with the control for being opened and closed the connecting line (6)
Valve (7) processed.
2. refrigeration equipment according to claim 1, which is characterized in that further include control device, first pressure detection device
With second pressure detection device, the first pressure detection device is used to detect the evaporating pressure in the evaporator (8), described
Second pressure detection device is used to detect the condensing pressure in the condenser (9)；The control device respectively with first pressure
Detection device and second pressure detection device electrical connection, the control device is according to the condensing pressure and the vapor pres- sure
The difference of power is opened and closed the control valve (7).
3. refrigeration equipment according to claim 2, which is characterized in that further include the first temperature-detecting device and second temperature
Detection device, first temperature-detecting device are used to detect the refrigerant temperature in air inlet pipeline (2), the second temperature detection
Device is used to detect the refrigerant temperature in gas exhaust piping (3).
4. refrigeration equipment according to claim 3, which is characterized in that the difference of the condensing pressure and the evaporating pressure
For Y, when detecting Y1 > Y > Y2, the control valve (7) keeps current action state；
Wherein, Y1=KX+B, Y2=KX+B-35, X are the refrigerant temperature in refrigerant temperature and outlet pipe in air inlet pipeline (2)
The difference of degree, K=20-80, B=20-80.
5. refrigeration equipment according to claim 4, which is characterized in that as Y >=Y1, described in control valve (7) opening
Connecting line (6).
6. refrigeration equipment according to claim 4, which is characterized in that as Y≤Y2, described in control valve (7) closing
Connecting line (6).
7. according to the described in any item refrigeration equipments of claim 2-6, which is characterized in that further include being connected with compressor (1)
Electric current holding meanss and voltage retaining device；The control device is kept with the electric current holding meanss and the voltage respectively
Device electrical connection.
8. refrigeration equipment according to claim 1-6, which is characterized in that the control valve (7) is electronic expansion
Valve or solenoid valve.
9. refrigeration equipment according to claim 1-6, which is characterized in that the connecting line (6) and described the
Mouth (4) and/or described second bypass interface (5) flanged joint are connected on one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811455584.6A CN109827359A (en) | 2018-11-30 | 2018-11-30 | A kind of refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811455584.6A CN109827359A (en) | 2018-11-30 | 2018-11-30 | A kind of refrigeration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109827359A true CN109827359A (en) | 2019-05-31 |
Family
ID=66859821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811455584.6A Pending CN109827359A (en) | 2018-11-30 | 2018-11-30 | A kind of refrigeration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109827359A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112303826A (en) * | 2020-10-22 | 2021-02-02 | 青岛海尔空调电子有限公司 | Control method of air conditioning unit and air conditioning unit |
| CN112460859A (en) * | 2020-12-10 | 2021-03-09 | 珠海格力电器股份有限公司 | Water chilling unit and control method thereof |
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| CN202690404U (en) * | 2012-08-17 | 2013-01-23 | 上海出入境检验检疫局机电产品检测技术中心 | Compressor safety test system |
| CN203627330U (en) * | 2013-09-05 | 2014-06-04 | 广州恒星冷冻机械制造有限公司 | Anti-surge device of centrifugal compressor |
| CN104613685A (en) * | 2014-12-26 | 2015-05-13 | 上海理工大学 | Refrigeration device capable of being rapidly started after being stopped with reduced starting torque |
| CN204757425U (en) * | 2014-12-26 | 2015-11-11 | 珠海格力电器股份有限公司 | Centrifugal refrigerating unit anti -surge system |
| CN108317760A (en) * | 2018-04-12 | 2018-07-24 | 合肥天鹅制冷科技有限公司 | Accurate temperature controlling refrigeration system |
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2018
- 2018-11-30 CN CN201811455584.6A patent/CN109827359A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202690404U (en) * | 2012-08-17 | 2013-01-23 | 上海出入境检验检疫局机电产品检测技术中心 | Compressor safety test system |
| CN203627330U (en) * | 2013-09-05 | 2014-06-04 | 广州恒星冷冻机械制造有限公司 | Anti-surge device of centrifugal compressor |
| CN104613685A (en) * | 2014-12-26 | 2015-05-13 | 上海理工大学 | Refrigeration device capable of being rapidly started after being stopped with reduced starting torque |
| CN204757425U (en) * | 2014-12-26 | 2015-11-11 | 珠海格力电器股份有限公司 | Centrifugal refrigerating unit anti -surge system |
| CN108317760A (en) * | 2018-04-12 | 2018-07-24 | 合肥天鹅制冷科技有限公司 | Accurate temperature controlling refrigeration system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112303826A (en) * | 2020-10-22 | 2021-02-02 | 青岛海尔空调电子有限公司 | Control method of air conditioning unit and air conditioning unit |
| WO2021233465A1 (en) * | 2020-10-22 | 2021-11-25 | 青岛海尔空调电子有限公司 | Control method for air conditioning unit, and air conditioning unit |
| CN112303826B (en) * | 2020-10-22 | 2022-05-20 | 青岛海尔空调电子有限公司 | Control method of air conditioning unit and air conditioning unit |
| CN112460859A (en) * | 2020-12-10 | 2021-03-09 | 珠海格力电器股份有限公司 | Water chilling unit and control method thereof |
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| PB01 | Publication | ||
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Application publication date: 20190531 |