CN104101140A - Freezer or refrigerator and refrigeration system thereof - Google Patents
Freezer or refrigerator and refrigeration system thereof Download PDFInfo
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- CN104101140A CN104101140A CN201410380109.2A CN201410380109A CN104101140A CN 104101140 A CN104101140 A CN 104101140A CN 201410380109 A CN201410380109 A CN 201410380109A CN 104101140 A CN104101140 A CN 104101140A
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- refrigerator
- expansion valve
- refrigeration system
- capillary
- superheat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides a freezer or a refrigerator and a refrigeration system thereof. The refrigeration system comprises a compressor, a condenser, a capillary tube and an evaporator which are arranged in turn; the compressor, the condenser, the capillary tube and the evaporator are connected in turn through a pipe to form a closed pipeline; an expansion valve is arranged at two ends of the capillary tube in parallel; the self-opening of the expansion valve can be adjusted according to the degree of superheat of the evaporator. According to the refrigeration system of the freezer or the refrigerator, the expansion valve is in parallel connection with the capillary tube and accordingly the adjustable flow is achieved; the capillary tube is conducted under the energy consumption mode and accordingly the energy-saving purpose is achieved; the flow of refrigerant in the refrigeration system is adjusted through the expansion valve under the large freezing capacity and accordingly the refrigeration capacity of the system is improved and the energy-saving purpose and the improvement of the freezing capacity are both achieved.
Description
Technical field
The present invention relates to field of household appliances, more specifically, relate to the refrigeration system and the refrigerator or the refrigerator that comprise this refrigeration system of a kind of refrigerator or refrigerator.
Background technology
Common large volume refrigerator (as product more than 300L), is subject to the impact of energy consumption at present, and its refrigerating speed is conventionally slow, there will be refrigerating capacity little, and storing freezes the problems such as unreal; And when increasing the refrigerating capacity of product, its power consumption will inevitably rise, and cannot meet energy class requirement.
In current refrigerator or Freezer Products, in refrigeration system, conventionally only have single channel capillary, and the self-regulating function of the flow of capillary own is very limited, can not meet cold requirement under heavy load state; If promote single channel flow capillaceous, product energy consumption must rise.
In correlation technique, have two (many) capillary systems of using on a kind of refrigerator or refrigerator, be applied to multi-evaporator, multi-chamber's product more, the automatically controlled modes that adopt are switched in control capillaceous more.Control system has master control borad, magnetic valve, pressure or temperature sensor etc., and master control borad passes through pressure or the each compartment temperature of temperature sensor perception, and then sends pulse signal by master control borad to magnetic valve, thereby controls magnetic valve a certain road closure or disconnect.
There is following shortcoming in two kinds of above-mentioned refrigeration systems:
1, single channel capillary cannot be realized flow and automatically regulates, and cooling velocity, refrigerating capacity and energy consumption cannot be taken into account simultaneously;
2, two (many) capillary systems, the adjusting of flow need to be carried out computer control by master control borad, need to increase display board, control panel, wire harness, pressure or temperature sensor and some other peripheral equipment, high expensive, it is relatively loaded down with trivial details that production line is criticized product operation simultaneously; And because control system is comparatively complicated, fault rate is also higher;
3, control system is relatively single, and precision is inadequate, and deviation is larger.
Summary of the invention
The present invention is intended at least solve one of technical problem existing in prior art.
For this reason, the object of one aspect of the present invention is, the refrigeration system of a kind of refrigerator or refrigerator is provided, and by expansion valve is connected with capillary paralleling, realizes the adjustable of flow, thereby reaches energy-conservation and promote the two object of taking into account of refrigerating capacity.
The object of another aspect of the present invention is, a kind of refrigerator or refrigerator that comprises above-mentioned refrigeration system is provided.
For achieving the above object, the embodiment of one aspect of the invention provides the refrigeration system of a kind of refrigerator or refrigerator, comprise the compressor, condenser, capillary and the evaporimeter that set gradually, and described compressor, described condenser, described capillary and described evaporimeter are connected successively by pipeline, the pipeline of composition sealing, and described two ends capillaceous have been arranged in parallel an expansion valve, described expansion valve can regulate according to the degree of superheat of described evaporimeter the aperture of self.
In the above embodiment of the present invention, in the refrigeration system of refrigerator or refrigerator, introduce expansion valve and capillary paralleling, the adjustment of the aperture by expansion valve, realizes the change of flow system flow, to meet the demand of the cold under different operating modes.Particularly, in the time that evaporimeter thermic load increases, while causing the degree of superheat (outlet temperature of evaporimeter and the temperature difference of evaporating temperature) of evaporimeter higher, the aperture of expansion valve increases, obtain higher evaporating temperature and larger refrigerating capacity, the temperature in refrigerator or refrigerator is declined rapidly; In the time that the degree of superheat of evaporimeter drops to the target degree of superheat, the aperture of expansion valve reduces, until close, now only has capillary one-way conduction (this flow capillaceous is the capillary flow rate under the best energy consumption drawing through energy consumption verification experimental verification), obtain lower evaporating temperature and less refrigerating capacity, only make refrigerator or cold in-cabinet temperature maintain in particular range, thereby effectively ensure that product is energy-conservation.
In sum, the refrigerator that the above embodiment of the present invention provides or the refrigeration system of refrigerator, by an expansion valve in parallel at two ends capillaceous, realize the adjustable of refrigerant flow, be convenient to refrigeration system switchover operation between " large refrigerating capacity " and " energy consumption " pattern, and then in ensureing product energy consumption, cooling velocity, refrigerating capacity are effectively promoted.
In addition, the refrigerator providing according to the above embodiment of the present invention or the refrigeration system of refrigerator also have following additional technical feature:
According to one embodiment of present invention, the branch road at described expansion valve place is provided with the first motor-driven valve, and described the first motor-driven valve can be according to the signalizing activity of the master control borad of described refrigerator or refrigerator, by branch road conducting or the disconnection at described expansion valve place.
According to one embodiment of present invention, the branch road at described capillary place is provided with the second motor-driven valve, and described the second motor-driven valve can be according to the signalizing activity of the master control borad of described refrigerator or refrigerator, by branch road conducting or the disconnection at described capillary place.
According to one embodiment of present invention, the described capillary being connected in parallel and one end of described expansion valve are provided with the 3rd motor-driven valve, described the 3rd motor-driven valve can be according to the signalizing activity of the master control borad of described refrigerator or refrigerator, controls conducting or the disconnection of the branch road at described expansion valve and/or described capillary place.
According to one embodiment of present invention, described the 3rd motor-driven valve is arranged on one end of the close described condenser of described capillary and described expansion valve.
According to one embodiment of present invention, the refrigeration system of described refrigerator or refrigerator also comprises: degree of superheat acquiring unit, for obtaining the degree of superheat of described evaporimeter; And control module, the described degree of superheat and the target degree of superheat are compared, and according to conducting and the disconnection of the branch road at expansion valve described in comparative result control and described capillary place.
According to one embodiment of present invention, described condenser is provided with filter with the described capillary being connected in parallel with the pipeline that described expansion valve is connected.
According to one embodiment of present invention, described expansion valve comprises electric expansion valve or heating power expansion valve.
According to one embodiment of present invention, described compressor is invariable frequency compressor.
The embodiment of second aspect present invention provides a kind of refrigerator or refrigerator, includes refrigerator described in above-mentioned arbitrary embodiment or the refrigeration system of refrigerator.
Additional aspect of the present invention and advantage will become in description part below obviously, or recognize by practice of the present invention.
Brief description of the drawings
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is according to the structural representation of the refrigeration system of the refrigerator described in one embodiment of the invention or refrigerator.
Wherein, in Fig. 1, the corresponding relation between Reference numeral and component names is:
1 compressor, 2 condensers, 3 filters, 4 the 3rd motor-driven valves, 5 capillaries, 6 heating power expansion valves, 7 evaporimeters.
Detailed description of the invention
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, in the situation that not conflicting, the feature in the application's embodiment and embodiment can combine mutually.
A lot of details are set forth in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from mode described here and implement, and therefore, protection scope of the present invention is not subject to the restriction of following public specific embodiment.
Refrigerator or refrigerator and refrigeration system thereof according to some embodiments of the invention described with reference to the accompanying drawings.
A kind of refrigerator providing according to some embodiments of the invention or the refrigeration system of refrigerator, as shown in Figure 1, comprise the compressor 1, condenser 2, capillary 5 and the evaporimeter 7 that set gradually, and described compressor 1, described condenser 2, described capillary 5 and described evaporimeter 7 are connected successively by pipeline, the pipeline of composition sealing, and the two ends of described capillary 5 have been arranged in parallel an expansion valve, particularly, described expansion valve is heating power expansion valve 6, and described heating power expansion valve 6 can regulate according to the degree of superheat of described evaporimeter 7 aperture of self.
In the above embodiment of the present invention, in the refrigeration system of refrigerator or refrigerator, introduce heating power expansion valve and capillary paralleling, the adjustment of the aperture by heating power expansion valve, realizes the change of flow system flow, to meet the demand of the cold under different operating modes.Particularly, in the time that evaporimeter thermic load increases, while causing the degree of superheat (outlet temperature of evaporimeter and the temperature difference of evaporating temperature) of evaporimeter higher, the aperture of heating power expansion valve increases, obtain higher evaporating temperature and larger refrigerating capacity, the temperature in refrigerator or refrigerator is declined rapidly; In the time that the degree of superheat of evaporimeter drops to the target degree of superheat, the aperture of heating power expansion valve reduces, until close, now only has capillary one-way conduction (this flow capillaceous is the capillary flow rate under the best energy consumption drawing through energy consumption verification experimental verification), obtain lower evaporating temperature and less refrigerating capacity, only make refrigerator or cold in-cabinet temperature maintain in particular range, thereby effectively ensure that product is energy-conservation.
In sum, the refrigerator that the above embodiment of the present invention provides or the refrigeration system of refrigerator, by a heating power expansion valve in parallel at two ends capillaceous, realize the adjustable of refrigerant flow, be convenient to refrigeration system switchover operation between " large refrigerating capacity " and " energy consumption " pattern, and then in ensureing product energy consumption, cooling velocity, refrigerating capacity are effectively promoted.
In the example depicted in fig. 1, described expansion valve is heating power expansion valve 6, and certainly, described expansion valve can also be other structures, as electric expansion valve etc., does not repeat one by one at this.
It should be noted that, heating power expansion valve 6 is flows that the degree of superheat by experiencing evaporator outlet place gaseous refrigerant is controlled the cold-producing medium that enters evaporimeter.Heating power expansion valve 6 is made up of induction mechanism, executing agency, guiding mechanism and valve body.In induction mechanism, fill certain working medium, temperature-sensitive bag is arranged on the exit of evaporimeter 7, between its exit temperature and evaporating temperature, has the temperature difference, is commonly referred to the degree of superheat.Temperature-sensitive bag is experienced after the temperature that evaporimeter 7 exports, and makes whole induction system in corresponding saturation pressure Pb.This pressure will be passed to push rod until spool by diaphragm.Only have Pb to exist at the diaphragm on pressure chamber top, there are the spring force Pt and the evaporating pressure P0 that adjust spring in the below of diaphragm, and three has Pb=Pt+Po in the time of balance.
In the time that evaporimeter thermic load increases, the outlet degree of superheat is higher, and Pb increases, and Pb>Pt+Po, makes a concerted effort to make push rod, spool to move down, and the aperture of heating power expansion valve increases, and the flow of cold-producing medium increases in proportion; Otherwise the aperture of heating power expansion valve diminishes, refrigerant flow reduces in proportion.Therefore, refrigeration system is that the oneself who is realized refrigeration system by heating power expansion valve by controlling the degree of superheat adjusts.
In first embodiment of the present invention, the branch road at described heating power expansion valve 6 places is provided with the first motor-driven valve (not shown), described the first motor-driven valve can be according to the signalizing activity of the master control borad of described refrigerator or refrigerator, by branch road conducting or the disconnection at described heating power expansion valve 6 places.
In second embodiment of the present invention, the branch road at described heating power expansion valve 6 places is provided with the first motor-driven valve (not shown), the branch road at described capillary 5 places is provided with the second motor-driven valve (not shown), described the first motor-driven valve and described the second motor-driven valve can be according to the signalizing activities of the master control borad of described refrigerator or refrigerator, by branch road conducting or the disconnection at described capillary 5 and described heating power expansion valve 6 places.
In the 3rd embodiment of the present invention, as shown in Figure 1, the described capillary 5 being connected in parallel is provided with the 3rd motor-driven valve 4 with one end of described heating power expansion valve 6, described the 3rd motor-driven valve 4 can be according to the signalizing activity of the master control borad of described refrigerator or refrigerator, controls conducting or the disconnection of the branch road at described heating power expansion valve 6 and described capillary 5 places.
Further, as shown in Figure 1, described the 3rd motor-driven valve 4 is arranged on one end of the close described condenser 2 of described capillary 5 and described heating power expansion valve 6.Certainly, the 3rd motor-driven valve 4 also can be arranged on one end of the close evaporimeter 7 of capillary 5 and heating power expansion valve 6.
In first embodiment of the present invention, in the time that the degree of superheat of evaporimeter is consistent with the target degree of superheat, the first motor-driven valve disconnects the branch road at heating power expansion valve place, now only has capillary one-way conduction, because flow capillaceous is the capillary flow rate under the best energy consumption drawing through energy consumption verification experimental verification, now can obtain lower evaporating temperature and less refrigerating capacity, the temperature in refrigerator or refrigerator is maintained in particular range, make product in power save mode; In the time that evaporimeter thermic load increases, while causing the degree of superheat of evaporimeter higher, the first motor-driven valve is by the branch road conducting at heating power expansion valve place, then the aperture of heating power expansion valve increases, obtain higher evaporating temperature and larger refrigerating capacity, temperature in refrigerator or refrigerator is declined rapidly, to obtain larger refrigerating capacity.In second embodiment of the present invention, in the time that the degree of superheat of evaporimeter is consistent with the target degree of superheat, the first motor-driven valve disconnects the branch road at heating power expansion valve place, and the second motor-driven valve, by the branch road conducting at capillary place, makes product in " energy consumption " mode operation; In the time that the degree of superheat of evaporimeter is greater than the target degree of superheat, the first motor-driven valve is by the branch road conducting at heating power expansion valve place, and the second motor-driven valve disconnects the branch road at capillary place, makes product in " large refrigerating capacity " mode operation.Similarly, in the 3rd embodiment of the present invention, the 3rd motor-driven valve can be realized the single conducting of capillary place branch road and heating power expansion valve place branch road, and in the time that the degree of superheat of evaporimeter is consistent with the target degree of superheat, the 3rd motor-driven valve is by the branch road conducting at capillary place; In the time that the degree of superheat of evaporimeter is greater than the target degree of superheat, the 3rd motor-driven valve is by the branch road conducting at heating power expansion valve place.
In above-mentioned three embodiment of the present invention, by being set, motor-driven valve controls the break-make of capillary and heating power expansion valve place branch road, adopt the control system of the combination of motor-driven valve control and thermal expansion valve regulation, the variable-flow of refrigeration system, the operation of the amount of turning cold are realized, realize the accurate transformation of power consumption mode and large refrigerating capacity, reach fast-refrigerating and energy-conservation the two object of taking into account, solved the problem such as low precision of utilizing single mechanical control method or single expansion valve to regulate to exist; In addition, refrigeration system only need be in the time that the degree of superheat be different from the target degree of superheat, controls motor-driven valve and opens and closes, and controls relatively simply, does not need other control structures such as computer master control borad, makes the production process minimizing of product, hazard rate and cost.
In some embodiments of the invention, the refrigeration system of described refrigerator or refrigerator also comprises degree of superheat acquiring unit and control module.
Wherein, described degree of superheat acquiring unit is for obtaining the degree of superheat of described evaporimeter 7;
Described control module compares the described degree of superheat and the target degree of superheat, and according to conducting and the disconnection of the branch road at heating power expansion valve 6 described in comparative result control and/or described capillary 5 places.
Particularly, described degree of superheat acquiring unit comprises: detecting unit and computing unit.
Described detecting unit comprises the first temperature-sensitive bag and the second temperature-sensitive bag, described the first temperature-sensitive bag is connected with the entrance of described evaporimeter 7, and can detect the temperature of the porch cold-producing medium of described evaporimeter 7, described the second temperature-sensitive bag is connected with the outlet of described evaporimeter 7, and can detect the temperature of the exit cold-producing medium of described evaporimeter 7;
Described computing unit calculates the temperature of exit cold-producing medium of described evaporimeter 7 and the difference of the temperature of porch cold-producing medium, obtains the degree of superheat of described evaporimeter 7.
In the example depicted in fig. 1, described condenser 2 is provided with filter 3 with the described capillary 5 being connected in parallel with the pipeline that described heating power expansion valve 6 is connected, filter 3 can filter cold-producing medium mobile in pipeline, avoid the granule foreign in cold-producing medium to enter in capillary 5, stop up capillary 5.
In some embodiments of the invention, described compressor 1 is invariable frequency compressor.
The embodiment of another aspect of the present invention provides a kind of refrigerator or refrigerator (not shown), include refrigerator described in above-mentioned arbitrary embodiment or the refrigeration system of refrigerator, and there are whole beneficial effects of the refrigeration system of refrigerator described in above-described embodiment or refrigerator.
In sum, the refrigeration system of refrigerator provided by the invention or refrigerator, realizes the adjusting of flow by introducing expansion valve and capillary paralleling, refrigeration system is realized under different operating modes and become evaporating temperature and the amount of turning cold operation, in ensureing energy consumption, promote cooling velocity and refrigerating capacity; Refrigeration system only need be in the time that the degree of superheat be different from the target degree of superheat, controls motor-driven valve and opens and closes, and controls relatively simply, does not need other control structures such as computer master control borad, makes the production process minimizing of product, hazard rate and cost.
In description of the invention, term " is connected ", " connection ", " fixing " etc. all should be interpreted broadly, and for example, " connection " can be to be fixedly connected with, and can be also to removably connect, or connects integratedly; Can be to be directly connected, also can indirectly be connected by intermediary.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In the description of this description, the description of term " embodiment ", " some embodiment ", " specific embodiment " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. the refrigeration system of a refrigerator or refrigerator, it is characterized in that, comprise the compressor, condenser, capillary and the evaporimeter that set gradually, and described compressor, described condenser, described capillary and described evaporimeter are connected successively by pipeline, the pipeline of composition sealing, and described two ends capillaceous have been arranged in parallel expansion valve, described expansion valve can regulate according to the degree of superheat of described evaporimeter the aperture of self.
2. the refrigeration system of refrigerator according to claim 1 or refrigerator, is characterized in that,
The branch road at described expansion valve place is provided with the first motor-driven valve, and described the first motor-driven valve can be according to the signalizing activity of the master control borad of described refrigerator or refrigerator, by branch road conducting or the disconnection at described expansion valve place.
3. the refrigeration system of refrigerator according to claim 2 or refrigerator, is characterized in that,
The branch road at described capillary place is provided with the second motor-driven valve, and described the second motor-driven valve can be according to the signalizing activity of the master control borad of described refrigerator or refrigerator, by branch road conducting or the disconnection at described capillary place.
4. the refrigeration system of refrigerator according to claim 1 or refrigerator, is characterized in that,
The described capillary being connected in parallel and one end of described expansion valve are provided with the 3rd motor-driven valve, and described the 3rd motor-driven valve can be according to the signalizing activity of the master control borad of described refrigerator or refrigerator, control conducting or the disconnection of the branch road at described expansion valve and described capillary place.
5. the refrigeration system of refrigerator according to claim 4 or refrigerator, is characterized in that,
Described the 3rd motor-driven valve is arranged on one end of the close described condenser of described capillary and described expansion valve.
6. according to the refrigeration system of the refrigerator described in any one in claim 2 to 5 or refrigerator, it is characterized in that, also comprise:
Degree of superheat acquiring unit, for obtaining the degree of superheat of described evaporimeter; With
Control module, compares the described degree of superheat and the target degree of superheat, and according to conducting and the disconnection of the branch road at expansion valve described in comparative result control and/or described capillary place.
7. according to the refrigeration system of the refrigerator described in any one in claim 1 to 5 or refrigerator, it is characterized in that,
Described condenser is provided with filter with the described capillary being connected in parallel with the pipeline that described expansion valve is connected.
8. according to the refrigeration system of the refrigerator described in any one in claim 1 to 5 or refrigerator, it is characterized in that,
Described expansion valve comprises electric expansion valve or heating power expansion valve.
9. according to the refrigeration system of the refrigerator described in any one in claim 1 to 5 or refrigerator, it is characterized in that,
Described compressor is invariable frequency compressor.
10. refrigerator or a refrigerator, is characterized in that, includes the refrigeration system of refrigerator as claimed in any one of claims 1-9 wherein or refrigerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410380109.2A CN104101140A (en) | 2014-08-04 | 2014-08-04 | Freezer or refrigerator and refrigeration system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410380109.2A CN104101140A (en) | 2014-08-04 | 2014-08-04 | Freezer or refrigerator and refrigeration system thereof |
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| Publication Number | Publication Date |
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| CN104101140A true CN104101140A (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410380109.2A Pending CN104101140A (en) | 2014-08-04 | 2014-08-04 | Freezer or refrigerator and refrigeration system thereof |
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| CN104792049A (en) * | 2015-04-27 | 2015-07-22 | 南方风机股份有限公司 | Switch-type refrigerating system used for adjusting refrigerating capacity |
| CN105953484A (en) * | 2016-04-26 | 2016-09-21 | 澳柯玛股份有限公司 | Double-capillary-tube refrigerating system of refrigerator |
| CN107024048A (en) * | 2016-01-31 | 2017-08-08 | 王飞波 | Variable disengagement area fluidised form ice-making system |
| CN111407123A (en) * | 2020-04-24 | 2020-07-14 | 珠海格力电器股份有限公司 | Control method for reducing temperature fluctuation, temperature control device and display cabinet |
| CN115993013A (en) * | 2023-02-16 | 2023-04-21 | 珠海格力电器股份有限公司 | Refrigerating system, medical low-temperature preservation box and anti-blocking method of refrigerating system |
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Application publication date: 20141015 |