CN102331153A - Refrigeration system, and control method thereof, and refrigeration equipment with refrigeration system - Google Patents

Refrigeration system, and control method thereof, and refrigeration equipment with refrigeration system Download PDF

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Publication number
CN102331153A
CN102331153A CN201110284477A CN201110284477A CN102331153A CN 102331153 A CN102331153 A CN 102331153A CN 201110284477 A CN201110284477 A CN 201110284477A CN 201110284477 A CN201110284477 A CN 201110284477A CN 102331153 A CN102331153 A CN 102331153A
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China
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temperature
refrigerating chamber
switch unit
outlet
chamber
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CN201110284477A
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Chinese (zh)
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CN102331153B (en
Inventor
王佳
靳党伟
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合肥美的荣事达电冰箱有限公司
合肥华凌股份有限公司
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Priority to CN 201110284477 priority Critical patent/CN102331153B/en
Publication of CN102331153A publication Critical patent/CN102331153A/en
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Publication of CN102331153B publication Critical patent/CN102331153B/en

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Abstract

The invention provides a refrigeration system, a control method thereof, and refrigeration equipment with the refrigeration system. The control method comprises the following steps that: whether a first outlet and a second outlet of a switching unit are closed, and respective temperature of a temperature changing chamber, a refrigeration chamber and a freezing chamber reaches the respective expected temperature is judged; when the first outlet is closed, the temperature of the temperature changing chamber does not reach the expected temperature and/or the temperature of the freezing chamber does not reach the expected temperature, a compressor is switched on and the second outlet is opened, and the temperature of the temperature changing chamber reaches expected temperature and the temperature of the freezing chamber reaches the expected temperature, the compressor is switched off; and when the second outlet is closed, the temperature of the refrigeration chamber does not reach the expected temperature, the compressor is switched on and the first outlet is opened, the temperature of the refrigeration chamber reaches the expected temperature but the temperature of the freezing chamber does not reach the expected temperature, the compressor is switched on and the second outlet is opened, the temperature of the refrigeration chamber reaches the expected temperature and the temperature of the freezing chamber reaches the expected temperature, and the compressor is switched off. In the refrigeration equipment, a storage chamber which is not used can be closed, so energy consumption is reduced.

Description

Refrigeration system and control method thereof and refrigeration plant with this refrigeration system

Technical field

The present invention relates to refrigeration plant control technology field, particularly a kind of refrigeration system and control method thereof and refrigeration plant with this refrigeration system.

Background technology

Three refrigeration plants such as three-door refrigerator generally comprise refrigerating chamber, refrigerating chamber and temperature-changing chamber.In the prior art, can use the control method of three systems, as shown in Figure 1, realize independent control through outlet A ', outlet B ' and the outlet C ' that controls switch unit to refrigerating chamber, refrigerating chamber and temperature-changing chamber.The problem that this control method exists is, the control system complex, and the cost of complete machine is higher.

In addition, also can adopt two systems control refrigerating chamber, refrigerating chamber and temperature-changing chamber, as shown in Figure 2, this control system has only two control loops, and one is temperature-changing chamber-refrigerating chamber refrigerating circuit, and another is refrigerating chamber-refrigerating chamber refrigerating circuit.The problem that this control mode exists is; If the temperature-changing chamber evaporimeter cuts out, the refrigerating chamber refrigeration can be passed through refrigerating chamber-refrigerating chamber refrigeration and realize, but temperature control can only guarantee the temperature of a chamber; Refrigerating chamber and refrigerating chamber have one and do not reach the control temperature; If refrigerating chamber is closed, the refrigerating chamber refrigeration can be passed through temperature-changing chamber-refrigerating chamber refrigerating circuit and realize, same temperature-changing chamber and refrigerating chamber have a chamber and do not reach the control temperature.

Summary of the invention

The object of the invention is intended to solve at least one of above-mentioned technological deficiency.

For realizing above-mentioned purpose, one aspect of the present invention proposes a kind of refrigeration system, comprising: compressor; Condenser, the inlet of said condenser links to each other with the outlet of said compressor; Switch unit, said switch unit have inlet, first outlet and second outlet, and the inlet of said switch unit links to each other with the outlet of said condenser; Throttling arrangement; Refrigerator evaporator, the inlet of said refrigerator evaporator links to each other with first outlet of said switch unit through said throttling arrangement; The temperature-changing chamber evaporimeter, the inlet of said temperature-changing chamber evaporimeter links to each other with second outlet of said switch unit through said throttling arrangement; Freezer evaporator, the inlet of said freezer evaporator link to each other with the outlet of said refrigerator evaporator and the outlet of temperature-changing chamber evaporimeter respectively, and the outlet of said freezer evaporator links to each other with the inlet of said compressor through said throttling arrangement; And controller; Said controller links to each other with said switch unit with said compressor respectively; Be used to judge first outlet of said switch unit and the state of second outlet; And whether the temperature whether temperature of judging temperature-changing chamber reaches predetermined temperature-changing chamber preferred temperature, refrigerating chamber reaches predetermined refrigerating chamber preferred temperature, whether the temperature of refrigerating chamber reaches predetermined refrigerating chamber preferred temperature; And the temperature that does not reach said temperature-changing chamber preferred temperature and/or said refrigerating chamber when the temperature of first port closing of said switch unit and said temperature-changing chamber does not reach said refrigerating chamber preferred temperature; Controlling second outlet of said compressor and said switch unit opens; The temperature that reaches said temperature-changing chamber preferred temperature and said refrigerating chamber when the temperature of first port closing of said switch unit and said temperature-changing chamber reaches said refrigerating chamber preferred temperature; Controlling said compressor closes; When second port closing of said switch unit and the temperature of said refrigerating chamber do not reach said refrigerating chamber preferred temperature; Control first outlet of said compressor and said switch unit and open,, control second outlet of said compressor and said switch unit and open when the temperature of second port closing of said switch unit and said refrigerating chamber reaches said refrigerating chamber preferred temperature but the temperature of said refrigerating chamber does not reach said refrigerating chamber preferred temperature; The temperature that reaches said refrigerating chamber preferred temperature and said refrigerating chamber when the temperature of second port closing of said switch unit and said refrigerating chamber reaches said refrigerating chamber preferred temperature, controls said compressor and closes.

In one embodiment of the invention, also comprise: first temperature sensor, link to each other with said controller, be used to detect the temperature of said temperature-changing chamber; Second temperature sensor links to each other with said controller, is used to detect the temperature of said refrigerating chamber; With three-temperature sensor, link to each other with said controller, be used to detect the temperature of said refrigerating chamber.

In one embodiment of the invention, said switch unit comprises three-way solenoid valve.

In one embodiment of the invention, said controller further comprises: the state judging unit, be connected with second outlet with first outlet of said switching, and be used to judge whether first outlet of said switch unit and second outlet close; Whether the temperature whether temperature judging unit, the temperature that is used to judge said temperature-changing chamber reach predetermined temperature-changing chamber preferred temperature, said refrigerating chamber reaches predetermined refrigerating chamber preferred temperature and whether the temperature of said refrigerating chamber reaches predetermined refrigerating chamber preferred temperature; Control module; Be used for the temperature that temperature when first port closing of said switch unit and said temperature-changing chamber do not reach said temperature-changing chamber preferred temperature and/or said refrigerating chamber and do not reach said refrigerating chamber preferred temperature; Controlling second outlet of said compressor and said switch unit opens; The temperature that reaches said temperature-changing chamber preferred temperature and said refrigerating chamber when the temperature of first port closing of said switch unit and said temperature-changing chamber reaches said refrigerating chamber preferred temperature; Controlling said compressor closes; And do not reach said refrigerating chamber preferred temperature when second port closing of said switch unit and the temperature of said refrigerating chamber; Controlling first outlet of said compressor and said switch unit opens; When the temperature of second port closing of said switch unit and said refrigerating chamber reaches said refrigerating chamber preferred temperature but the temperature of said refrigerating chamber does not reach said refrigerating chamber preferred temperature; Control second outlet of said compressor and said switch unit and open, the temperature that reaches said refrigerating chamber preferred temperature and said refrigerating chamber when the temperature of second port closing of said switch unit and said refrigerating chamber reaches said refrigerating chamber preferred temperature, controls said compressor and closes.

In one embodiment of the invention, this refrigeration system also comprises: anti-condensation device, said anti-condensation device is connected between said condenser and the said switch unit.

In one embodiment of the invention, this refrigeration system also comprises: device for drying and filtering, said device for drying and filtering are arranged between said condenser and the said switch unit.

The refrigeration system of implementing according to the present invention; Through judging the state of refrigerating chamber and temperature-changing chamber; And the temperature of refrigerating chamber, refrigerating chamber and temperature-changing chamber, the keying of control compressor and switch unit, thus can and not influence the refrigeration of other storerooms according to user's request closing cold room and temperature-changing chamber; Bring advantage to the user, and reduced the energy consumption of refrigeration system.

The present invention also proposes a kind of control method of refrigeration system on the other hand, may further comprise the steps: S1: whether first outlet of judging said switch unit closes; S2: if first port closing of said switch unit, whether the temperature of then further judging temperature-changing chamber reaches predetermined temperature-changing chamber preferred temperature and whether the temperature of refrigerating chamber reaches predetermined refrigerating chamber preferred temperature; S3: do not reach said refrigerating chamber preferred temperature if the temperature of said temperature-changing chamber reaches the temperature of said temperature-changing chamber preferred temperature and/or said refrigerating chamber, then control second outlet of said compressor and said switch unit and open; S4: reach said refrigerating chamber preferred temperature if the temperature of said temperature-changing chamber reaches the temperature of said temperature-changing chamber preferred temperature and said refrigerating chamber, then control said compressor and close; S5: whether second outlet of judging said switch unit closes; S6: if second port closing of said switch unit, whether the temperature of then further judging refrigerating chamber reaches predetermined refrigerating chamber preferred temperature and whether the temperature of said refrigerating chamber reaches said refrigerating chamber preferred temperature; S7:, then control first outlet of said compressor and said switch unit and open if the temperature of said refrigerating chamber does not reach said refrigerating chamber preferred temperature; S8: the temperature of said refrigerating chamber does not reach said refrigerating chamber preferred temperature if the temperature of said refrigerating chamber reaches said refrigerating chamber preferred temperature, then controls second outlet of said compressor and said switch unit and opens; S9: reach said refrigerating chamber preferred temperature if the temperature of said refrigerating chamber reaches the temperature of said refrigerating chamber preferred temperature and said refrigerating chamber, then control said compressor and close.

In one embodiment of the invention, if first outlet of said switch unit is not closed and/or second outlet of said switch unit is not closed, then control said refrigeration system and get into normal mode of operation.

The control method of the refrigeration system of implementing according to the present invention; During the valve closing of refrigerator evaporator; When refrigerating chamber or temperature-changing chamber have the refrigeration demand of arbitrary chamber promptly to start compressor and temperature-changing chamber evaporimeter valve; All not having refrigeration demand when refrigerating chamber and temperature-changing chamber is close compressor, and when guaranteeing the refrigerating chamber valve closing, refrigerating chamber and temperature-changing chamber can both reach the cryogenic temperature of expectation; When temperature-changing chamber evaporimeter valve is closed,, judge it is refrigerating chamber request refrigeration or refrigerating chamber request refrigeration then when refrigerating chamber or refrigerating chamber have the refrigeration demand of arbitrary chamber promptly to start compressor; If refrigerating chamber request and refrigerating chamber be not when asking; Open the valve of temperature-changing chamber evaporimeter, because the power consumption of temperature-changing chamber evaporimeter is less than refrigerator evaporator power consumption, energy efficient; If refrigerating chamber request or both's request promptly start compressor and refrigerator evaporator valve; Close compressor when refrigerating chamber and refrigerating chamber all do not have refrigeration demand, when guaranteeing the temperature-changing chamber valve closing, refrigerating chamber and refrigerating chamber can both reach the cryogenic temperature of expectation.Do not influence the refrigeration of other storerooms when not only realizing the closing of refrigerating chamber and temperature-changing chamber thus, and reduced the energy consumption of refrigeration plant.

Another aspect of the invention also proposes a kind of refrigeration plant, comprising: casing is limited with at least one refrigerating chamber, at least one temperature-changing chamber and at least one refrigerating chamber in the said casing; Refrigeration system, said refrigeration system are according to the described refrigeration system of first aspect present invention embodiment, are used for said at least one refrigerating chamber, at least one temperature-changing chamber and at least one refrigerating chamber are freezed; And control panel, be used to receive the opening and closing that said temperature-changing chamber preferred temperature, said refrigerating chamber preferred temperature and said refrigerating chamber preferred temperature export with first outlet and second of controlling said switch unit through the controller of said refrigeration system.

According to the refrigeration plant of the embodiment of the invention, can realize the closing function of refrigerating chamber and temperature-changing chamber according to user's demand, and reduce energy consumption.

Aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.

Description of drawings

Above-mentioned and/or additional aspect of the present invention and advantage are from obviously with easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:

Fig. 1 is the sketch map of three system control methods of refrigeration plant of the prior art;

Fig. 2 is the sketch map of two system control modes of refrigeration plant of the prior art;

Fig. 3 is the structural representation of the refrigeration system of one aspect of the invention embodiment;

Fig. 4 is the structural representation of the controller of one embodiment of the invention; And

Fig. 5 is the flow chart of control method of the refrigeration system of one aspect of the invention embodiment.

The specific embodiment

Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not be interpreted as limitation of the present invention.

In description of the invention, need to prove, unless otherwise prescribed and limit; Term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be mechanical connection or electrical connection; Also can be the connection of two element internals, can be directly to link to each other, and also can link to each other indirectly through intermediary; For those of ordinary skill in the art, can understand the concrete implication of above-mentioned term as the case may be.

In addition, term " first ", " second " only are used to describe purpose, and can not be interpreted as indication or hint relative importance.

The refrigeration system of describing according to the embodiment of the invention with reference to figure 3 below.

Fig. 3 is the structural representation of the refrigeration system of the embodiment of the invention.As shown in Figure 3, the refrigeration system according to the embodiment of the invention comprises: compressor 100, condenser 700, throttling arrangement 800, switch unit 200, refrigerator evaporator 300, temperature-changing chamber evaporimeter 400, freezer evaporator 500 and controller 600.

Wherein, the inlet of condenser 700 links to each other with the outlet of compressor 100.

Switch unit 200 has inlet, first outlet (A outlet) and second outlet (B outlet), and the inlet of switch unit 200 links to each other with the outlet of compressor 100.

The inlet of refrigerator evaporator 300 links to each other with first outlet of switch unit 200 through throttling arrangement 800.

The inlet of temperature-changing chamber evaporimeter 400 links to each other with second outlet of switch unit 200 through throttling arrangement 800.

The inlet of freezer evaporator 500 links to each other with the outlet of refrigerator evaporator 300 and the outlet of temperature-changing chamber evaporimeter 400 respectively, and the outlet of freezer evaporator 500 links to each other with the inlet of compressor 100.

Controller 600 links to each other with switch unit 200 with compressor 100, is used to judge first outlet of switch unit 200 and the state of second outlet; And whether the temperature whether temperature of judging temperature-changing chamber reaches predetermined temperature-changing chamber preferred temperature, refrigerating chamber reaches predetermined refrigerating chamber preferred temperature, whether the temperature of refrigerating chamber reaches predetermined refrigerating chamber preferred temperature; And the control of accomplishing refrigeration system according to state judged result and temperature judged result.

Particularly, the temperature that does not reach temperature-changing chamber preferred temperature and/or refrigerating chamber when the temperature of first port closing of switch unit 200 and temperature-changing chamber does not reach the refrigerating chamber preferred temperature, and second outlet of control compressor 100 and switch unit 200 is opened; The temperature that reaches temperature-changing chamber preferred temperature and refrigerating chamber when the temperature of first port closing of switch unit 200 and temperature-changing chamber reaches the refrigerating chamber preferred temperature, and control compressor 100 cuts out; When second port closing of switch unit 200 and the temperature of refrigerating chamber do not reach the refrigerating chamber preferred temperature, first outlet of control compressor 100 and switch unit 200 is opened; When the temperature of second port closing of switch unit 200 and refrigerating chamber reaches the refrigerating chamber preferred temperature but the temperature of refrigerating chamber does not reach the refrigerating chamber preferred temperature, second outlet of control compressor 100 and switch unit 200 is opened; The temperature that reaches refrigerating chamber preferred temperature and refrigerating chamber when the temperature of second port closing of switch unit 200 and refrigerating chamber reaches the refrigerating chamber preferred temperature, and control compressor 100 cuts out.

Wherein, predetermined temperature-changing chamber preferred temperature, predetermined refrigerating chamber preferred temperature and predetermined refrigerating chamber preferred temperature can be the temperature that the user is provided with, and also can be the temperature of systemic presupposition.The preferred temperature of temperature-changing chamber is higher than the refrigerating chamber preferred temperature, and the refrigerating chamber preferred temperature is higher than the refrigerating chamber preferred temperature.

Particularly, as shown in Figure 4 in one embodiment of the invention, controller 600 can comprise: state judging unit 610, temperature judging unit 620 and control module 630.

Wherein, state judging unit 610 is connected with second outlet with first outlet of switch unit 200, is used to judge whether first outlet of switch unit 200 and second outlet close.

Temperature judging unit 620 is used to judge whether temperature that whether temperature of temperature-changing chamber reaches predetermined temperature-changing chamber preferred temperature, refrigerating chamber reaches predetermined refrigerating chamber preferred temperature and whether the temperature of refrigerating chamber reaches predetermined refrigerating chamber preferred temperature.

Control module 630 is used for the judged result according to temperature judging unit 620, the work of control refrigeration system.

Particularly; The temperature that does not reach temperature-changing chamber preferred temperature and/or refrigerating chamber when the temperature of first port closing of switch unit 200 and temperature-changing chamber does not reach the refrigerating chamber preferred temperature, and second outlet of control module 630 control compressors 100 and switch unit 200 is opened.

The temperature that reaches temperature-changing chamber preferred temperature and refrigerating chamber when the temperature of first port closing of switch unit 200 and temperature-changing chamber reaches the refrigerating chamber preferred temperature, and control module 630 control compressors 100 cut out.

When second port closing of switch unit 200 and the temperature of refrigerating chamber do not reach the refrigerating chamber preferred temperature, first outlet of control module 630 control compressors 100 and switch unit 200 is opened.

When the temperature of second port closing of switch unit 200 and refrigerating chamber reaches the refrigerating chamber preferred temperature but the temperature of refrigerating chamber does not reach the refrigerating chamber preferred temperature, second outlet of control module 630 control compressors 100 and switch unit 200 is opened.

The temperature that reaches refrigerating chamber preferred temperature and refrigerating chamber when the temperature of second port closing of switch unit 200 and refrigerating chamber reaches the refrigerating chamber preferred temperature, and control module 630 control compressors 100 cut out.

In one embodiment of the invention, this refrigeration system also can comprise: first temperature sensor, second temperature sensor and three-temperature sensor.

Wherein, First temperature sensor links to each other with controller 600, particularly, links to each other with temperature judging unit 620; Be used to detect the temperature of temperature-changing chamber, and the temperature of detected temperature-changing chamber is sent to controller 600 so that controller 600 carries out the temperature judgement and carries out the control corresponding operation.Similarly, second temperature sensor also links to each other with controller 600, particularly, links to each other with temperature judging unit 620, is used to detect the temperature of refrigerating chamber.Three-temperature sensor also links to each other with controller 600, particularly, links to each other with temperature judging unit 620, is used to detect the temperature of refrigerating chamber.

In one embodiment of the invention, refrigeration system also comprises device for drying and filtering 900.Wherein device for drying and filtering 900 is arranged between condenser 700 and the switch unit 200.Cold-producing medium can produce impurity such as moisture, pressed powder, dirt in running, and throttling arrangement 800 is stopped up.Therefore, impurity such as the moisture that contains in 900 pairs of cold-producing mediums of device for drying and filtering, pressed powder, dirt being set before cold-producing medium is flowed through throttling arrangement 800 filters.According to the device for drying and filtering 900 of the embodiment of the invention, prevent on the one hand the obstruction of throttling arrangement 800, in addition, the moisture that device for drying and filtering 900 can the absorption refrigeration agent makes refrigeration better.

In one embodiment of the invention, switch unit 200 comprises three-way solenoid valve.Adopt three-way magnetic valve, have the outlet accurate positioning, switch the advantage simple, that controllability is strong.In addition, three-way magnetic valve is cheap, long service life.

In preferred embodiments more of the present invention, this refrigeration system also can comprise anti-condensation device 710, for example is dew eliminating tube.Therefore dew eliminating tube good toughness, flexible and high temperature resistant can better be arranged on the contact position of the chamber door and the doorframe of refrigerator, and according to self characteristics, have the advantage of long service life.In addition, dew eliminating tube is cheap, is prone to buying.

In preferred embodiments more of the present invention, throttling arrangement 800 can comprise capillary and return-air heat exchanging segment.Capillary comprises refrigerating chamber capillary and temperature-changing chamber capillary, and capillary is that the metal or the plastic material of tiny tubulose is made, and it is low to have a cost, processes simple advantage.In addition, two ends capillaceous are connected closely with other parts, are difficult for leaking.Cold-producing medium is flowed through behind the refrigerating evaporator, and the cooled via return air heat exchanging segment is got back to the compressor recycling, thereby can save energy consumption, improves the service life of refrigerator.

Should be understood that refrigeration system, not only be confined to described refrigeration plant, also be suitable for the multi-door multisystem refrigeration plant of the approaching many storerooms of function of the present invention with three of refrigerating chamber, refrigerating chamber and temperature-changing chambers according to the embodiment of the invention.

The refrigeration system of implementing according to the present invention; Through judging the state of refrigerating chamber and temperature-changing chamber; And the temperature of refrigerating chamber, refrigerating chamber and temperature-changing chamber, the keying of control compressor and switch unit, thus can and not influence the refrigeration of other storerooms according to user's request closing cold room and temperature-changing chamber; Bring advantage to the user, and reduced the energy consumption of refrigeration system.For realizing the foregoing description, the present invention also proposes a kind of control method of refrigeration system.

Specify the control method of the refrigeration system of the embodiment of the invention below in conjunction with Fig. 3 and Fig. 5.

Fig. 5 is the flow chart of control method of the refrigeration system of the embodiment of the invention.As shown in Figure 5, the control method according to the refrigeration system of the embodiment of the invention may further comprise the steps:

Step S101: whether first outlet of judging switch unit 200 closes.

Step S102: if first port closing of switch unit 200, whether the temperature of then further judging temperature-changing chamber reaches predetermined temperature-changing chamber preferred temperature and whether the temperature of refrigerating chamber reaches predetermined refrigerating chamber preferred temperature.

Step S103: do not reach the refrigerating chamber preferred temperature if the temperature of temperature-changing chamber reaches the temperature of temperature-changing chamber preferred temperature and/or refrigerating chamber, then control second outlet of compressor 100 and switch unit 200 and open.

Step S104: reach the refrigerating chamber preferred temperature if the temperature of temperature-changing chamber reaches the temperature of temperature-changing chamber preferred temperature and refrigerating chamber, then control compressor 100 and close.

Should be understood that and after execution of step S103 and step S104, also should continue to detect the temperature of temperature-changing chamber and the temperature of refrigerating chamber.In case the temperature of temperature-changing chamber reaches the temperature of temperature-changing chamber preferred temperature and refrigerating chamber and reaches the refrigerating chamber preferred temperature, execution in step S104 immediately.The temperature that does not meet temperature-changing chamber preferred temperature and/or refrigerating chamber in case the temperature of temperature-changing chamber rises or descends does not meet the refrigerating chamber preferred temperature, immediately execution in step S103.

Thus, can realize that when refrigerating chamber was closed, temperature-changing chamber and refrigerating chamber can be realized refrigeration demand, and add judge link that when temperature-changing chamber and refrigerating chamber need not freeze, but close compressor cuts down the consumption of energy.

Step S105: whether second outlet of judging switch unit 200 closes.

Step S106: if second port closing of switch unit 200, whether the temperature of then further judging refrigerating chamber reaches predetermined refrigerating chamber preferred temperature and whether the temperature of refrigerating chamber reaches the refrigerating chamber preferred temperature.

Step S107:, then control first outlet of compressor 100 and switch unit 200 and open if the temperature of refrigerating chamber does not reach the refrigerating chamber preferred temperature.

Step S108: the temperature of refrigerating chamber does not reach the refrigerating chamber preferred temperature if the temperature of refrigerating chamber reaches the refrigerating chamber preferred temperature, then controls second outlet of compressor 100 and switch unit 200 and opens.

The preferred temperature of refrigerating chamber is littler than the preferred temperature of temperature-changing chamber; When but the temperature of refrigerating chamber reaches its preferred temperature refrigerating chamber and does not reach its preferred temperature; Open temperature-changing chamber corresponding outlet carrying out refrigerating chamber refrigeration and compare and open refrigerating chamber corresponding outlet carrying out refrigerating chamber refrigeration, energy consumption is little.

Step S109: reach the refrigerating chamber preferred temperature if the temperature of refrigerating chamber reaches the temperature of refrigerating chamber preferred temperature and refrigerating chamber, then control compressor 100 and close.

Be understood that; After the temperature according to the temperature of refrigerating chamber and refrigerating chamber executes the control corresponding operation; Should continue to detect the temperature of refrigerating chamber and the temperature of refrigerating chamber, in time to carry out the control corresponding operation according to the variations in temperature of refrigerating chamber and the variations in temperature of refrigerating chamber.

In one embodiment of the invention, if first outlet of switch unit 200 is not closed and/or second outlet of switch unit 200 is not closed, then control said refrigeration system and get into normal mode of operation.Wherein, as shown in Figure 3, normal mode of operation refers to, and when temperature of refrigerating chamber did not reach the refrigerating chamber preferred temperature, A channel was opened, compressor start, refrigerating chamber refrigeration; When the temperature-changing chamber temperature did not reach the temperature-changing chamber preferred temperature, the B passage was opened, compressor start, temperature-changing chamber refrigeration; Refrigerating chamber relies on the box refrigeration system coupling, assurance cryogenic temperature when refrigerating chamber and temperature-changing chamber are alternately opened; When refrigerating chamber and temperature-changing chamber ask to start shooting simultaneously, open A channel earlier, compressor start, temperature of refrigerating chamber reach then compressor shutdown of refrigerating chamber preferred temperature, open the B passage again, compressor start, temperature-changing chamber refrigeration.

The control method of the refrigeration plant of implementing according to the present invention; During the refrigerator evaporator valve closing; When refrigerating chamber or temperature-changing chamber have the refrigeration demand of arbitrary chamber promptly to start compressor and temperature-changing chamber evaporimeter valve; All not having refrigeration demand when refrigerating chamber and temperature-changing chamber is close compressor, and when guaranteeing the refrigerating chamber valve closing, refrigerating chamber and temperature-changing chamber can both reach the cryogenic temperature of expectation; When temperature-changing chamber evaporimeter valve is closed,, judge it is refrigerating chamber request refrigeration or refrigerating chamber request refrigeration then when refrigerating chamber or refrigerating chamber have the refrigeration demand of arbitrary chamber promptly to start compressor; If refrigerating chamber request and refrigerating chamber be not when asking; Open the valve of temperature-changing chamber evaporimeter, because the power consumption of temperature-changing chamber evaporimeter is less than refrigerator evaporator power consumption, energy efficient; If refrigerating chamber request or both's request promptly start compressor and refrigerator evaporator valve; Close compressor when refrigerating chamber and refrigerating chamber all do not have refrigeration demand, when guaranteeing the temperature-changing chamber valve closing, refrigerating chamber and refrigerating chamber can both reach the cryogenic temperature of expectation.Do not influence the refrigeration of other storerooms when not only realizing the closing of refrigerating chamber and temperature-changing chamber thus, and reduced the energy consumption of refrigeration plant.

For realizing the foregoing description, the present invention proposes a kind of refrigeration plant again, comprising: casing, refrigeration system and control panel.

Wherein, be limited with at least one refrigerating chamber, at least one temperature-changing chamber and at least one refrigerating chamber in the casing.

Refrigeration system is the refrigeration system that proposes according to first aspect present invention, is used at least one refrigerating chamber in the casing, at least one temperature-changing chamber and at least one refrigerating chamber are freezed.

Control panel is used to receive temperature-changing chamber preferred temperature, refrigerating chamber preferred temperature and refrigerating chamber preferred temperature to control first outlet of switch units 200 and the opening and closing of second outlet through the controller 600 of refrigeration system.In an embodiment of the present invention, control panel can be arranged on the inboard of casing, and the back timber that perhaps can be arranged on refrigeration plant is first-class.

According to the refrigeration plant of the embodiment of the invention, can realize the closing function of refrigerating chamber and temperature-changing chamber according to user's demand, be user-friendly to, and energy consumption is low.

In sum, control method and system and the refrigeration plant with control system according to the refrigeration plant of the embodiment of the invention have following beneficial effect at least:

(1) closing of controlled system refrigerating chamber and temperature-changing chamber, the user can according to oneself demand closing cold room and temperature-changing chamber and do not influence the refrigeration of other storerooms, bring advantage to the user.

(2) reduced the energy consumption of refrigeration plant.

In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.

Although illustrated and described embodiments of the invention; For those of ordinary skill in the art; Be appreciated that under the situation that does not break away from principle of the present invention and spirit and can carry out multiple variation, modification, replacement and modification that scope of the present invention is accompanying claims and be equal to and limit to these embodiment.

Claims (9)

1. the control method of a refrigeration system; It is characterized in that; Said refrigeration system comprises refrigerator evaporator, freezer evaporator, temperature-changing chamber evaporimeter, compressor and switch unit; Wherein said switch unit has inlet, first outlet and second outlet, and the outlet of said compressor links to each other with the inlet of said switch unit, and the inlet of said refrigerator evaporator exports with first of said switch unit and is connected; The inlet of said temperature-changing chamber evaporimeter is connected with second outlet of said switch unit; The inlet of said freezer evaporator links to each other with the outlet of said refrigerator evaporator and the outlet of said temperature-changing chamber evaporimeter respectively, and the outlet of said freezer evaporator links to each other with the inlet of said compressor, and said control method may further comprise the steps:
S1: whether first outlet of judging said switch unit closes;
S2: if first port closing of said switch unit, whether the temperature of then further judging temperature-changing chamber reaches predetermined temperature-changing chamber preferred temperature and whether the temperature of refrigerating chamber reaches predetermined refrigerating chamber preferred temperature;
S3: do not reach said refrigerating chamber preferred temperature if the temperature of said temperature-changing chamber reaches the temperature of said temperature-changing chamber preferred temperature and/or said refrigerating chamber, then control second outlet of said compressor and said switch unit and open;
S4: reach said refrigerating chamber preferred temperature if the temperature of said temperature-changing chamber reaches the temperature of said temperature-changing chamber preferred temperature and said refrigerating chamber, then control said compressor and close;
S5: whether second outlet of judging said switch unit closes;
S6: if second port closing of said switch unit, whether the temperature of then further judging refrigerating chamber reaches predetermined refrigerating chamber preferred temperature and whether the temperature of said refrigerating chamber reaches said refrigerating chamber preferred temperature;
S7:, then control first outlet of said compressor and said switch unit and open if the temperature of said refrigerating chamber does not reach said refrigerating chamber preferred temperature;
S8: the temperature of said refrigerating chamber does not reach said refrigerating chamber preferred temperature if the temperature of said refrigerating chamber reaches said refrigerating chamber preferred temperature, then controls second outlet of said compressor and said switch unit and opens;
S9: reach said refrigerating chamber preferred temperature if the temperature of said refrigerating chamber reaches the temperature of said refrigerating chamber preferred temperature and said refrigerating chamber, then control said compressor and close.
2. the control method of refrigeration system according to claim 1 is characterized in that, also comprises:
If first outlet of said switch unit is not closed and/or second outlet of said switch unit is not closed, then control said refrigeration system and get into normal mode of operation.
3. a refrigeration system is characterized in that, comprising:
Compressor;
Condenser, the inlet of said condenser links to each other with the outlet of said compressor;
Switch unit, said switch unit have inlet, first outlet and second outlet, and the inlet of said switch unit links to each other with the outlet of said condenser;
Throttling arrangement;
Refrigerator evaporator, the inlet of said refrigerator evaporator links to each other with first outlet of said switch unit through said throttling arrangement;
The temperature-changing chamber evaporimeter, the inlet of said temperature-changing chamber evaporimeter links to each other with second outlet of said switch unit through said throttling arrangement;
Freezer evaporator, the inlet of said freezer evaporator link to each other with the outlet of said refrigerator evaporator and the outlet of temperature-changing chamber evaporimeter respectively, and the outlet of said freezer evaporator links to each other with the inlet of said compressor through said throttling arrangement; With
Controller; Said controller links to each other with said switch unit with said compressor respectively; Be used to judge first outlet of said switch unit and the state of second outlet; And whether the temperature whether temperature of judging temperature-changing chamber reaches predetermined temperature-changing chamber preferred temperature, refrigerating chamber reaches predetermined refrigerating chamber preferred temperature, whether the temperature of refrigerating chamber reaches predetermined refrigerating chamber preferred temperature, and
The temperature that does not reach said temperature-changing chamber preferred temperature and/or said refrigerating chamber when the temperature of first port closing of said switch unit and said temperature-changing chamber does not reach said refrigerating chamber preferred temperature; Controlling second outlet of said compressor and said switch unit opens
The temperature that reaches said temperature-changing chamber preferred temperature and said refrigerating chamber when the temperature of first port closing of said switch unit and said temperature-changing chamber reaches said refrigerating chamber preferred temperature, and control said compressor and close,
When second port closing of said switch unit and the temperature of said refrigerating chamber do not reach said refrigerating chamber preferred temperature, control first outlet of said compressor and said switch unit and open,
When the temperature of second port closing of said switch unit and said refrigerating chamber reaches said refrigerating chamber preferred temperature but the temperature of said refrigerating chamber does not reach said refrigerating chamber preferred temperature, control second outlet of said compressor and said switch unit and open,
The temperature that reaches said refrigerating chamber preferred temperature and said refrigerating chamber when the temperature of second port closing of said switch unit and said refrigerating chamber reaches said refrigerating chamber preferred temperature, controls said compressor and closes.
4. refrigeration system according to claim 3 is characterized in that, also comprises:
First temperature sensor links to each other with said controller, is used to detect the temperature of said temperature-changing chamber;
Second temperature sensor links to each other with said controller, is used to detect the temperature of said refrigerating chamber; With
Three-temperature sensor links to each other with said controller, is used to detect the temperature of said refrigerating chamber.
5. refrigeration system according to claim 3 is characterized in that said switch unit comprises three-way solenoid valve.
6. refrigeration system according to claim 3 is characterized in that, said controller further comprises:
The state judging unit is connected with second outlet with first outlet of said switch unit, is used to judge whether first outlet of said switch unit and second outlet close;
Whether the temperature whether temperature judging unit, the temperature that is used to judge said temperature-changing chamber reach predetermined temperature-changing chamber preferred temperature, said refrigerating chamber reaches predetermined refrigerating chamber preferred temperature and whether the temperature of said refrigerating chamber reaches predetermined refrigerating chamber preferred temperature; With
Control module; Be used for the temperature that temperature when first port closing of said switch unit and said temperature-changing chamber do not reach said temperature-changing chamber preferred temperature and/or said refrigerating chamber and do not reach said refrigerating chamber preferred temperature; Controlling second outlet of said compressor and said switch unit opens
The temperature that reaches said temperature-changing chamber preferred temperature and said refrigerating chamber when the temperature of first port closing of said switch unit and said temperature-changing chamber reaches said refrigerating chamber preferred temperature, and control said compressor and close, and
When second port closing of said switch unit and the temperature of said refrigerating chamber do not reach said refrigerating chamber preferred temperature, control first outlet of said compressor and said switch unit and open,
When the temperature of second port closing of said switch unit and said refrigerating chamber reaches said refrigerating chamber preferred temperature but the temperature of said refrigerating chamber does not reach said refrigerating chamber preferred temperature, control second outlet of said compressor and said switch unit and open,
The temperature that reaches said refrigerating chamber preferred temperature and said refrigerating chamber when the temperature of second port closing of said switch unit and said refrigerating chamber reaches said refrigerating chamber preferred temperature, controls said compressor and closes.
7. refrigeration system according to claim 3 is characterized in that, also comprises:
Anti-condensation device is connected between said condenser and the said switch unit.
8. refrigeration system according to claim 3 is characterized in that, also comprises:
Device for drying and filtering, said device for drying and filtering are arranged between said condenser and the said switch unit.
9. a refrigeration plant is characterized in that, comprising:
Casing is limited with at least one refrigerating chamber, at least one temperature-changing chamber and at least one refrigerating chamber in the said casing;
Like each described refrigeration system among the claim 3-6, be used for said at least one refrigerating chamber, at least one temperature-changing chamber and at least one refrigerating chamber are freezed; With
Control panel is used to receive the opening and closing that said temperature-changing chamber preferred temperature, said refrigerating chamber preferred temperature and said refrigerating chamber preferred temperature export with first outlet and second of controlling said switch unit through the controller of said refrigeration system.
CN 201110284477 2011-09-22 2011-09-22 Refrigeration system, and control method thereof, and refrigeration equipment with refrigeration system CN102331153B (en)

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CN106288638B (en) * 2016-08-17 2019-02-26 合肥华凌股份有限公司 A kind of control method of refrigerator
CN108731370A (en) * 2018-05-24 2018-11-02 长虹美菱股份有限公司 A kind of household electric refrigerator motor-driven valve self-correction control method

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