CN101329130B

CN101329130B - Control device of refrigerator

Info

Publication number: CN101329130B
Application number: CN2008101256698A
Authority: CN
Inventors: 宫本善至雄; 山口勤; 山本新二
Original assignee: Sanyo Electric Co Ltd
Current assignee: Sanyo Electric Co Ltd
Priority date: 2007-06-19
Filing date: 2008-06-17
Publication date: 2010-11-24
Anticipated expiration: 2028-06-17
Also published as: CN101329130A; JP5103065B2; JP2009002537A

Abstract

The present invention provides a control device of a refrigerator, which can control more than one compressor with low cost and high precision. Capability control can be especially exerted to other kinds of refrigerator especially. The refrigerator control device of the invention controls the operation of the compressor according to the pressure of the low-pressure side of more than one compressor and comprises the following components: a low-pressure-side pressure setting operating mechanism which is used for setting the pressure setting value at the low-pressure side of the compressor, a low-pressure pressure sensor (low-pressure-side pressure detecting mechanism) which detects the pressure of the low pressure side of the compressor, a control mechanism which controls the operation of the compressor according to the pressure at the low pressure side of the compressor detected by the low-pressure pressure sensor and the setting value set by the low-pressure-side pressure setting operating mechanism with a regulated control mode, and a switching operating mechanism which is used for switching and setting the kinds of the refrigerant used by the freezing circulation of the freezer.The control mechanism alters the pressure range which can be set by the low-pressure-side pressure setting operating mechanism according to the switch of the refrigerant kind set by the setting mechanism.

Description

The control device of refrigerator

Technical field

The present invention relates to control the control device of at least one the above compressor operation that constitutes the refrigerator freeze cycle.

Background technology

Many the showcases that shops such as existing supermarket are provided with remain on suitable temperature to the commodity of display by refrigerator to cooling off in the cabinet also.This refrigerator constitutes the cold-producing medium circulation by compressor, condenser, the mechanism of decompressor and evaporimeter etc., and evaporimeter is set respectively in each showcase, and compressor then is arranged with the showcase branch that is arranged in the shop.

Particularly under the many situations of the platform number of showcase, many (for example: two～five) compressors are set, increase and decrease the platform number of the compressor that moves, control refrigerating capacity like this according to the load of showcase.Be exactly to have the pressure detecting mechanism (for example mechanical compression switch) that detection low-pressure side (input side) pressure is set in the cold-producing medium suction side of each compressor now specifically, utilize the pressure of each compressor low-pressure side that this mechanical compression switch detects to control the action of each compressor, to have suitable refrigerating capacity.

In recent years, replacing the mechanical compression switch as this pressure detecting mechanism and to using electronic pressure switch to shift.Though be that mechanical compression switch cost is low, the setting of pressure is to use the analog scaling adjustment of screwdriver etc., therefore, the difficulty of setting and the bad problem of precision is arranged, and shifts to the electronic pressure switch that uses the high accuracy number mode.But the control of electronic pressure switch need be used microcomputer, and need with the corresponding electronic pressure switch of platform number of compressor, therefore, with the mechanical problem that has cost quite high of comparing.

So the applicant has developed the control device of compressor in order to address this problem, and possesses: testing agency, the low-pressure side refrigerant pressure of its each compressor is exported as pressure signal; Controlling organization, it is according to this pressure signal and predefined three kinds of ON/OFF (ON/OFF) setting pressures and control four kinds of output modes with the ON/OFF of dual output, and the capacity of compressor is divided into different two groups, an output ON/OFF with dual output controls first group compressor, and ON/OFF controls second group of compressor with another output.

Like this, the control of compressor can be carried out, and the simplification (for example with reference to patent documentation 1) that pressure is set can be sought with low cost.

Patent documentation 1:(Japan) spy opens the 2006-337022 communique

But, then need to be replaced with the special-purpose refrigerator that possesses this control device at least, and can not control existing refrigerator in order to utilize above-mentioned control device to control compressor.

Summary of the invention

The present invention develops in order to solve existing prior art problem, purpose is to provide a kind of control device of refrigerator, can be with the compressor of low-cost and high-precision ground control more than at least one, particularly the refrigerator for other kinds also can carry out volume controlled accurately.

Refrigerator control device of the present invention is controlled the running of compressor according to the low-pressure lateral pressure of at least one the above compressor that constitutes the refrigerator freeze cycle, wherein, comprise: the low-pressure lateral pressure setting operation mechanism that is used to set compressor low-pressure lateral pressure setting value, detect the low-pressure lateral pressure testing agency of compressor low-pressure lateral pressure, come control mode in accordance with regulations to carry out the controlling organization that compressor operation is controlled according to the compressor low-pressure lateral pressure of this low-pressure lateral pressure testing agency detection and the setting value of low-pressure lateral pressure setting operation mechanism setting, be used to switch the handover operation mechanism that sets the employed cold-producing medium kind of refrigerator freeze cycle, the cold-producing medium kind that controlling organization sets according to handover operation mechanism changes the pressure limit that low-pressure lateral pressure setting operation mechanism can set.

The refrigerator control device of content of the present invention 2 inventions and the host control device of outside between possess and be used to carry out data and send the transmitter-receiver structure that receives, controlling organization is carried out compressor operation according to the control from host control device that receives via the transmitter-receiver structure with the setting value of the low-pressure lateral pressure in the data and is controlled.

The refrigerator control device of content of the present invention 3 inventions is in the invention of content 2 of the present invention, possesses: with host control device between can be connected the two-wire system that is used to carry out data transmission reception and four-wire type order wire the order wire connecting portion, to be used for according to the order wire that this order wire connecting portion is connected be the handover operation mechanism that two-wire system or four-wire type are come commutation circuit.

The refrigerator control device of content of the present invention 4 inventions be in content 1 of the present invention in each invention of content 3 of the present invention, the low tension switch that contact and refrigerator possessed that is opened and closed by controlling organization control is connected in series.

According to the present invention, low-pressure lateral pressure according at least one the above compressor that constitutes the refrigerator freeze cycle is controlled in the control device of compressor operation, comprise: the low-pressure lateral pressure setting operation mechanism that is used to set compressor low-pressure lateral pressure setting value, detect the low-pressure lateral pressure testing agency of compressor low-pressure lateral pressure, come control mode in accordance with regulations to carry out the controlling organization that compressor operation is controlled according to the compressor low-pressure lateral pressure of this low-pressure lateral pressure testing agency detection and the setting value of low-pressure lateral pressure setting operation mechanism setting, be used to switch the handover operation mechanism that sets the employed cold-producing medium kind of refrigerator freeze cycle, the cold-producing medium kind that controlling organization sets according to handover operation mechanism changes the pressure limit that low-pressure lateral pressure setting operation mechanism can set, therefore, can control multiple compressors accurately.Particularly the compressor of other machines also can connect, so utilize the control device of the present invention existing out of contior refrigerator that has had of volume controlled accurately.Promptly control device of the present invention just is connected with existing refrigerator and can carries out volume controlled to existing refrigerator accurately, therefore can also do one's utmost to suppress the increase of cost.

Particularly as long as content 2 inventions of the present invention, and the host control device of outside between possess and be used to carry out data and send the transmitter-receiver structure that receives, controlling organization just can come centralized Control to carry out the refrigerator that compressor operation is controlled with the setting value of the low-pressure lateral pressure in the data according to the control from host control device that receives via the transmitter-receiver structure.

As content 3 inventions of the present invention, possess: with host control device between to be connected the order wire connecting portion that is used to carry out data and sends the two-wire system that receives and four-wire type order wire, to be used for according to the order wire that this order wire connecting portion is connected be the handover operation mechanism that two-wire system or four-wire type are come commutation circuit, like this can with have two-wire system and four-wire type in the host control device of any order wire corresponding, can improve versatility.

The invention of content 4 of the present invention is in each invention that content 1 of the present invention is put down in writing to content 3 of the present invention, the low tension switch that contact and refrigerator possessed that is opened and closed by control device control is connected in series, like this, then can use the existing low tension switch of refrigerator as safety device, can seek to improve security.

Description of drawings

Fig. 1 is the refrigerant loop figure by the refrigerator of an embodiment of refrigerator control device control of the present invention;

Fig. 2 is the figure that expression refrigerator control device of the present invention disposes an example;

Fig. 3 is the front view of Fig. 1 control device;

Fig. 4 is the side view (left side view) of Fig. 1 control device;

Fig. 5 is the vertical view of Fig. 1 control device;

Fig. 6 is that expression is the figure of the door open mode of Fig. 2 control device;

Fig. 7 is the part of the control substrate partial arrangement drawing of Fig. 2 control device;

Fig. 8 is that expression is according to the machine of present embodiment control device and switch SW 4 is carried out the figure that ON/OFF operates an example;

Fig. 9 ON value that to be expression write to the memory of present embodiment control device and the figure of OFF value one example;

Figure 10 is the figure of multichannel (25HP) the compressor grade control undertaken by the present embodiment control device of expression;

Figure 11 is the figure of grade transfer time of each section in expression present embodiment each operation mode;

Figure 12 is the figure of multichannel (30HP) the compressor grade control undertaken by the present embodiment control device of expression;

Figure 13 is another figure of grade transfer time of each section in expression present embodiment each operation mode;

Figure 14 is the figure of multichannel (36HP) the compressor grade control undertaken by the present embodiment control device of expression;

Figure 15 is the figure of multichannel (40HP) the compressor grade control undertaken by the present embodiment control device of expression;

Figure 16 is the figure of multichannel (65HP) the compressor grade control undertaken by the present embodiment control device of expression;

Figure 17 is the figure of multichannel (70HP) the compressor grade control undertaken by the present embodiment control device of expression;

Figure 18 is the figure of multichannel (75HP) the compressor grade control undertaken by the present embodiment control device of expression;

Figure 19 is the figure of multichannel (80HP) the compressor grade control undertaken by the present embodiment control device of expression;

Figure 20 is the figure of multichannel (85HP) the compressor grade control undertaken by the present embodiment control device of expression;

Figure 21 is the figure of multichannel (90HP) the compressor grade control undertaken by the present embodiment control device of expression;

Figure 22 is the figure of multichannel (95HP) the compressor grade control undertaken by the present embodiment control device of expression;

Figure 23 is the figure of two compressed and multiplexed machine grade controls of the difference output undertaken by the present embodiment control device of expression;

Figure 24 is the figure of two compressed and multiplexed machine grade controls of the identical output undertaken by the present embodiment control device of expression;

Figure 25 is the figure of three compressed and multiplexed machine grade controls of the identical output undertaken by the present embodiment control device of expression;

Figure 26 is the figure of a compressor (unit kind) the grade control undertaken by the present embodiment control device of expression;

Figure 27 is to use the control device of many playscripts with stage directions invention and is carried out the circuit diagram of central controlled situation one example by the host control device of outside.

Symbol description

R refrigerator C1, C2 compressor 1 control device 3 unit base

5 controllers, 6 accessory framves, 7 distribution boxs, 12 oil eliminators

13 condensers (radiator), 14 reservoirs, 15 magnetic valves

16 expansion valves (mechanism of decompressor), 17 evaporimeters, 18 gas-liquid separators

19 low-pressure sensors (low-pressure lateral pressure testing agency), 20 showcases

29 high-pressure sensors, 30 bodies, 32 top boards, 33 distribution boxs

35 lids, 37 baseplate parts, 40 dials, 45 digital display parts

5P1,5P2 PERCOM peripheral communication connecting portion (transmitter-receiver structure) L1, L2 low tension switch

SW1～SW7 switch SW 8 change-over switches (order wire switching handover operation mechanism)

The specific embodiment

The present invention's handle as purpose, particularly can the high accuracy volume controlled have the refrigerator control device of refrigerator now as purpose providing a kind of with the low-cost and high-precision ground compressor of control more than at least one.Realize providing a kind of control accurately to have the purpose of the refrigerator control device of refrigerator now in the following way: it possesses: the low-pressure lateral pressure setting operation mechanism that is used to set compressor low-pressure lateral pressure setting value, detect the low-pressure lateral pressure testing agency of compressor low-pressure lateral pressure, come control mode in accordance with regulations to carry out the controlling organization that compressor operation is controlled according to the compressor low-pressure lateral pressure of this low-pressure lateral pressure testing agency detection and the setting value of low-pressure lateral pressure setting operation mechanism setting, be used to switch the handover operation mechanism that sets the employed cold-producing medium kind of refrigerator freeze cycle, the cold-producing medium kind that controlling organization sets according to handover operation mechanism changes the pressure limit that low-pressure lateral pressure setting operation mechanism can set.Embodiments of the invention below are described with reference to the accompanying drawings.

Fig. 1 is that Fig. 2 is the figure that expression refrigerator control device of the present invention disposes an example by the turn round refrigerant loop figure of an embodiment refrigerator freeze cycle of control of refrigerator control device of the present invention.When cooling off in the cabinet of Duo Tai (being two among Fig. 1) showcase 20, uses by this refrigerator.The refrigerator R of present embodiment illustrated in figures 1 and 2 is the semi-hermetic type compressor C1 that possesses two different outputs, the refrigerator of C2.This refrigerator R connects two different compressor C1, C2 that export, the condenser (radiator) 13 that is dispelled the heat by compressor C1, C2 refrigerant compressed and

expansion valve

16A, 16B and

evaporimeter

17A, 17B etc. as the mechanism of decompressor of being arranged in each showcase 20 is constituted freeze cycle by pipe arrangement.The compressor C1, the C2 that are exactly two different outputs specifically connect mutually side by side, at the cold-producing medium exhaust end of each compressor C1, C2 oil eliminator 12 are set.This oil eliminator 12 is used for the oil that the high-temperature high-pressure refrigerant gas that spues from each compressor C1, C2 is contained is separated, and returns to compressor C1, C2.

Outlet side at oil eliminator 12 is provided with condenser 13, and at its outlet side reservoir 14 is set.Reservoir 14 is used for the cold-producing medium that interim storage is liquefied by above-mentioned condenser 13, and stably cold-producing medium is supplied with to

expansion valve

16A, 16B and

evaporimeter

17A, 17B.

The pipe arrangement of reservoir 14 outlet sides is connected with the showcase 20 interior expansion valve 16A that are provided with, the inlet of 16B via

magnetic valve

15A, 15B respectively by shunt.The pipe arrangement that comes out from

expansion valve

16A, 16B is connected with the inlet of evaporimeter 17A, 17B.The pipe arrangement that comes out from

evaporimeter

17A, 17B is coming out from each showcase 20 and is converging the back to arrive gas-liquid separator 18.This gas-liquid separator 18 carries out gas-liquid separation to the cold-producing medium from each evaporimeter 17A, the 17B that are provided with in the showcase 20, only makes gas partly turn back to compressor C1, C2, is used to prevent that the unfavorable condition of each compressor C1, C2 compressed liquid is in possible trouble.

The pipe arrangement that comes out from gas-liquid separator 18 also is connected with the cold-producing medium suction side of compressor C1, C2 respectively along separate routes.19 is low-pressure sensors of control device 1 among Fig. 1.This low-pressure sensor 19 is that the cold-producing medium suction side that is used to detect compressor C1, C2 is the low-pressure lateral pressure testing agency of the low-pressure side refrigerant pressure of compressor C1, C2, is connected with control device 1 described later.29 is the high-pressure sensors that detect compressor C1, C2 high-pressure side refrigerant pressure among Fig. 1, similarly is connected with control device 1 with low-pressure sensor 19.As shown in Figure 2, the refrigerator R of present embodiment is fixed on the reservoir 14 of horizontal type on the unit base 3, is set side by side with two compressor C1, the C2 of compressed refrigerant and the controller 5 of the existing controlling organization of conduct above this reservoir 14.This controller 5 is connected with control device 1 among the present invention, and carries out the running control of compressor C1, C2 according to the output of this control device 1.The running that is compressor C1, the C2 of refrigerator R in the present embodiment comes down to be controlled by control device 1, and existing controller 5 uses as a part that constitutes control device 1.Controller 5 constitutes outline by distribution box 7, and inside is provided with the control substrate.

High-voltage switch gear H1, H2 and low tension switch L1, the L2 of compressor C1, C2 that existing refrigerator R possessed are set in the side of distribution box 7.And the rear side at distribution box 7 is provided with above-mentioned oil eliminator 12 and gas-liquid separator 18 (not shown among Fig. 2).

On the other hand, in the side of distribution box 7 (left of distribution box 7 among Fig. 2) control device 1 of the present invention is set.Control device 1 is set at by lower margin everywhere and is fixed on the accessory frame 6 of unit base 3.Control device 1 is built-in with as the capacity that writes compression board number or each compressor or according to the memory of the storing mechanism of a plurality of control modes of compression board number and each capacity.Fig. 3 is the front view of control device 1, and Fig. 4 is side view (left side view), and Fig. 5 is a vertical view, and Fig. 6 represents that the front view of lid 35 open modes of body 30 Fig. 7 is the part of control substrate 37 partial arrangement drawings of configuration in the expression body 30.

The distribution box 33 that control device 1 is constituted by the top board of being installed by body 30 and this body 30 tops of lengthwise four directions shape 32 and constitute outline.The front of body 30 is equipped with covers 35, utilizes this lid 35 can close inner with opening and closing.The inside of body 30 contains control substrate 37.

Among Fig. 6,3P2 is the distribution connecting portion of low-pressure sensor 19,3P3 is the distribution connecting portion of high-pressure sensor 29,2P5 is the distribution connecting portion that detects the inlet temperature sensor (not shown) of compressor C1, C2 suction side (inspiration side) refrigerant temperature, 2P6 is the distribution connecting portion that detects the temperature sensor that spues (not shown) of compressor C1, C2 exhaust end refrigerant temperature, and these are distribution connecting portions that the refrigerator of any kind of can both common connection.Because the control device 1 of refrigerator of the present invention is connected with above-mentioned low-pressure sensor 19, and carry out the running control of compressor according to the output of this low-pressure sensor 19, therefore, the contact that has refrigerator running control employed low tension switch L1, L2 now and opened and closed by control device 1 control is connected in series, as the safety device use of low pressure.

Among Fig. 6, X1～X8 is a relay.The control device 1 of present embodiment is when the refrigerator (refrigerator that possesses the multi-channel approach of compressor) of control multi-channel approach; use like this: X1 is relay (the then contact disconnection of ON that alarm is used; then contact conducting of OFF; alarm starts); X2 is relay (the then contact conducting of ON that compressor protection stops usefulness; OFF then contact disconnects; all compressors are protected to be stopped); X3 is relay (the then contact conducting of OFF that oil oppositely stops usefulness; ON then contact disconnects; liquid pipe magnetic valve contract fully); X4～X7 is volume controlled relay (the then contact conducting of ON of each compressor; OFF then contact disconnects), X8 is full speed relay (the then contact conducting of ON of condenser fan; OFF then contact disconnects).

On the other hand, when the refrigerator of control beyond the multi-channel approach, use like this: X1～X3 sets the rotary speed of condenser fan motor at full speed relay (X1 and X3 is then contact disconnection of ON, then contact conducting of OFF, X2 is then contact disconnection of then contact conducting of ON, OFF), X4～X8 is the volume controlled relay (then contact conducting of ON, OFF then contact disconnect) of each compressor.

When using the refrigerator of multi-channel approach, the contact 2P3 uses as distribution box 33 temperature anomalies uses 2P4 as the contact of the usefulness that resets.3P1,2P1 and 4P2 are the 200V inputs, when the refrigerator of control multi-channel approach, 3P1 are used as oppositely importing, and 2P1 is used as the defrosting input, and 4P2 is used as importing night.When the refrigerator of control beyond the multi-channel approach, 2P1 is used as the various unusual input of refrigerator.

On the other hand, Fig. 6 and SW1 shown in Figure 7 are used to switch described laterly make whole compressors stop, making with the ON value the automatic pressure change-over switch of the compulsory mode and the automatic mode of whole compressor operations with the Lim value, SW3 is the dual-in-line switch that pattern is switched usefulness, SW4 is the dual-in-line switch that machine switches usefulness, SW6 and SW7 are the setting operation switches, and these are the selection operating mechanisms that are used for selecting from a plurality of control modes of into control device 1 memory any control mode.The 40th, the dial of setting usefulness.When the automatic mode of above-mentioned automatic pressure change-over switch SW1, can be chosen to compressor: be used for energy-saving operation energy saver mode, be used to make commodity in the showcase keep high freshness high freshness pattern, compressor by the single system pattern of single system running control, utilize any of Night (control device 1 of present embodiment, Night are the operation modes that only can be applicable to the control of multi-channel approach refrigerator) of outside input.

The switch SW 3 of embodiment is made of eight dual-in-line switches that can carry out ON/OFF operation, possesses: be used for the refrigerator machine selector switch of the multiple refrigerator of Control on Communication and be used to switch the cold-producing medium selector switch of setting the employed cold-producing medium kind of refrigerator freeze cycle etc.

The refrigerator machine selector switch that is used for the multiple refrigerator of Control on Communication of switch SW 4, constitute by four dual-in-line switches that can carry out the ON/OFF operation, the ON/OFF of each dual-in-line switch is operated according to the content that kind, capacity and platform number according to compressor are predetermined, like this, can communicate control to each refrigerator by control device 1.Be exactly as shown in Figure 8 specifically, the switch SW 4 of present embodiment decides the ON/OFF of each dual-in-line switch in advance according to the kind of refrigerator, by according to using the machine ON/OFF operation of 1～4 dual-in-line switch of SW4 as shown in Figure 8, and control device 1 can be the control of turning round of the compressor of each refrigerator.In Fig. 6 and Fig. 7, the 45th, digital display part (can represent 4 among the embodiment).Numeral display part 45 is the indication mechanisms that are used to show each setting value, operation mode, each temperature (inlet temperature of compressor and the temperature that spues), fault content (error code) etc.

When for example wanting to show operation mode, operation dial 40 makes operation mode upwards (running position shown in Figure 7), and then digital display part 45 shows the operation mode of present tense punctum.The operation mode of punctum is next digital display part 45 demonstrations " Eco " of situation of energy saver mode in present tense, show " Fre " at the next digital display part 45 of the situation that is high freshness pattern, show " Sin " at the next digital display part 45 of the situation of single system pattern.When the change operation mode, just can set (change) operation mode by operating described each console switch SW6, SW7.

As shown in Figure 7, when making the demonstration of " running ", operation dial 40 makes progress, then digital display part 45 shows the low-pressure lateral pressure of cold-producing medium, as described above the demonstration that makes " high pressure " when operation dial 40 upwards, then digital display part 45 is that unit shows the high side pressure that high-pressure sensor 29 detects with 0.01MPa.When making the demonstration of " suction ", operation dial 40 makes progress, then digital display part 45 is by per 1 ℃ of inlet temperature that shows the cold-producing medium of the suction compressor that the inlet temperature sensor detects, make " spuing " upwards when being operable to, the temperature that spues of the cold-producing medium that spues from compressor that then digital display part 45 spues that temperature sensor detects by per 1 ℃ of demonstration.

Make progress when operation dial 40 makes the demonstration of " fault record ", then digital display part 45 shows the content of fault with code.Be exactly specifically under the situation that is suitable for the multi-channel approach refrigerator; abnormal cause when being anti-phase then digital display part 45 show with E00; then digital display part 45 shows with E01 when the temperature anomaly of distribution box 33 is reason; then digital display part 45 shows with E02 when low pressure is reason unusually; then digital display part 45 shows with E04 when compressor protection; then digital display part 45 shows with E06 when high-pressure is unusual; then digital display part 45 shows with E07 when inlet temperature is unusual; then digital display part 45 shows with E040 when spuing temperature anomaly, and then digital display part 45 shows with E19 when any communication abnormality occurring.

On the other hand, existing refrigerator beyond multi-channel approach is suitable under the situation of control device 1, then digital display part 45 shows with E05 when low pressure is reason unusually, then digital display part 45 shows with E06 when high-pressure is unusual, then digital display part 45 shows with E07 when inlet temperature is unusual, then digital display part 45 shows with E04 when spuing temperature anomaly, and then digital display part 45 shows with E19 when any communication abnormality occurring.

In Fig. 6 and Fig. 7, the 51st, glittering or bright lamp when aftermentioned breaks down and be used to show the warning light of fault, the 52nd, be used for showing respectively the compressor operation lamp of each compressor ON during the relay coil ON of each compressor, the 53rd, be used for the inspecting lamp of display base plate audit program action.This inspecting substrate program is used to carry out the inspection of substrate when running stops.Promptly when routine running stops by SW2 being set for the inspection that ON then can control substrate 37.Then described digital display part 45 shows " CHEC " when this inspecting substrate program behavior.This SW2 is set to ON when routine turns round, can not carry out inspecting substrate but maloperation during promptly owing to conventional running, so it is the demonstration " CH-" (notify the user situation that mistake is set, be used to supervise the demonstration that SW2 is become OFF) that mistake is set main idea that digital display part 45 shows.

54, the 55th, the force value display lamp of demonstration low-pressure lateral pressure value, the 54th, the HIGH lamp of bright lamp when the force value that low-pressure sensor 19 detects is higher than setting value (in the scope of ON value described later and OFF value), the 55th, the LOW lamp of bright lamp when the force value that low-pressure sensor 19 detects is lower than setting value (in the scope of ON value described later and OFF value).The 56th, the defrosting lamp of bright lamp during the defrosting running.

At this as mentioned above, control device 1 is according to kind (the platform number of compressor and the capacity of each compressor of refrigerator, or the platform number of compressor or the capacity of compressor etc.) any control mode of selecting according to the operation that from a plurality of control modes of write memory, utilizes described each switch (SW1, SW3, SW4, SW6, SW7), and carry out the running control of compressor via controller 5.Be exactly that control device 1 carries out grade control according to above-mentioned control mode to the running of compressor specifically, so that the low pressure that low-pressure sensor 19 detects is in the pressure limit (in the scope of ON value and OFF value) of decision.

The ON value of this low pressure and OFF value can be according to the kinds of the use of refrigerator and cold-producing medium and the memory of into control device 1.Fig. 9 represents the ON value of setting according to the kind of the use of refrigerator and cold-producing medium, an example of OFF value.For example as shown in Figure 9, control device 1 can be № 1～№ 6 these six setting write memories, can select the most appropriate setting according to the use of refrigerator and the kind of cold-producing medium by the operation of dial 40 and console switch SW6, SW7, like this, the pressure limit (scope of ON value and OFF value) that control device 1 change can be set, the scope that becomes the ON value of this selection setting and OFF value is interior and control the running of compressor.

Be exactly that operation dial 40 makes show value upwards (demonstration of " the normal pressure setting " of dial 40 is located at " running " position shown in Figure 7) specifically.Operating operation switch SW 6, SW7 select the setting value № that wishes, digital display part 45 is shown, operation dial 40 makes the demonstration of " running " turn back to original position (position shown in Figure 7) under this state, like this, the just running control of carrying out compressor with the ON value of storing among this № and OFF value.

When writing ON value and OFF value when writing again (change the ON value of each № and the OFF value of initial setting and), just can change by operation dial 40 and console switch SW6, SW7 to each №.Promptly constitute low-pressure lateral pressure setting operation of the present invention mechanism by dial 40 and console switch SW6, SW7.

Be exactly specifically when writing the ON value that pressure sets, operation dial 40 makes ON that pressure sets upwards (make the ON of pressure setting be positioned at " running " position of dial shown in Figure 7 40).Like this, digital display part 45 shows the ON value that the pressure of present tense punctums is set.And keep intact state (ON of the pressure setting of dial 40 is in state up) operating operation switch SW 6, SW7 down in the position that makes dial 40, for example when wanting to make the pressure set points rising of ON, then repeatable operation console switch SW7 becomes the value of hope up to digital display part 45 shown ON setting pressures, so just can improve setting value.When change that the pressure set points of wanting to make ON descends, then keep the following operating operation switch SW 6 of intact state (ON of the pressure setting of dial 40 is in state up) setting value is descended up to the value that becomes hope in the position that makes dial 40.

On the other hand, when writing the OFF value of pressure setting, the OFF that operation dial 40 is set pressure makes progress (" running " position that the OFF that pressure is set is positioned at dial shown in Figure 7 40), and like this, digital display part 45 shows the OFF pressure set points of present tense punctums.And keep intact state (OFF of the pressure setting of dial 40 is in state up) operating operation switch SW 6, SW7 down in the position that makes dial 40, for example when wanting to make the pressure set points rising of OFF, then repeatable operation console switch SW7 becomes the value of hope up to digital display part 45 shown OFF setting pressures, so just can improve setting value.When change that the pressure set points of wanting to make OFF descends, then keep the following operating operation switch SW 6 of intact state (OFF of the pressure setting of dial 40 is in state up) setting value is descended up to the value that becomes hope in the position that makes dial 40.

Control device 1 is divided into a plurality of sections to the low pressure value that low-pressure sensor 19 detects, the switching time of utilizing the affiliated section of this low pressure value to change each grade.Be exactly that section is interior as middle (section C) the scope of the ON value of above-mentioned setting value and OFF value specifically, on the force value of this section C scope, set two sections (section A and section B).It is the above force value of ON value that section B is set to, but (present embodiment is the scope of (ON value+0.1) * 1.2-0.1), is section A next being divided into of the situation that is positioned at force value on this value at the setting that is less than decision from the ON value.

Under the force value of section C scope, set two sections (section D and section E).It is the following force value of OFF value that section D is set to, but also (present embodiment is (OFF value+0.1) * 0.8-0.095) high scope, is section E next being divided into of the situation that is positioned at the force value lower than this value at the setting that determines than the OFF value.Control device 1 is divided section according to the low pressure that detects, and adds operation mode and decide the grade control method (number of degrees etc.) of compressor capacity and the switching time of grade thereof, carries out the running control of compressor according to these.And decide the force value (above-mentioned Lim value) that stops all compressors according to employed cold-producing medium kind and OFF value.When promptly the low pressure value that detects when low-pressure sensor 19 was lower than this Lim value, then control device 1 stopped the running of all compressors.

Be exactly specifically, present embodiment is when using R22 as cold-producing medium, be when selecting the dual-in-line switch of cold-producing medium kind to be switched into R22 in the switch SW 3, in the OFF value is that the next Lim value of situation more than the 0.170Mpa is set to 0.050MPa, in the OFF value is more than the 0.100Mpa and less than the next 0.030MPa of being set to of the situation of 0.170Mpa, is then to be set to during less than 0.100 force value to be-0.010MPa in the OFF value.

On the other hand, when using R404A (when the dual-in-line switch is switched into R404A) as cold-producing medium, in the OFF value is that the next Lim value of situation more than the 0.240Mpa is set to 0.090MPa, in the OFF value is more than the 0.150Mpa and less than the next 0.030MPa of being set to of the situation of 0.240Mpa, is then to be set to during less than 0.150 force value to be-0.010MPa in the OFF value.

Control device 1 of the present invention and be to possess between the master controller MC to be useful on to carry out data and send the transmitter-receiver structure that receives as the host control device of outside, PERCOM peripheral communication connecting portion 5P1,5P2 that present embodiment control device 1 is arranged on the control substrate 37 are equivalent to the transmitter-receiver structure.This PERCOM peripheral communication connecting portion 5P1,5P2 are provided with a plurality of (being 5 separately among the embodiment) connecting portion is the structure that can be connected with the order wire of two-wire system and four-wire type.And control substrate 37 is provided with, and to be used for according to the order wire that is connected be two-wire system or four-wire type and the change-over switch SW8 as handover operation mechanism of commutation circuit.Be exactly in the control device 1 of present embodiment specifically, with situation that the two-wire system order wire is connected under, being connected with the 3rd connecting portion from second of last beginning among order wire and the PERCOM peripheral communication connecting portion 5P2 shown in Figure 7, and by operation change-over switch SW8, at control device 1 and have the transmission of carrying out data between the master controller MC of two-wire system order wire and receive, can be according to selecting control mode from the control of host control device with data and carrying out the running control of compressor.

With situation that the master controller MC that possesses the four-wire type order wire is connected under, connecting portion except going up most connecting portion among order wire and the 5P2 of PERCOM peripheral communication portion shown in Figure 7 is connected, and by operation change-over switch SW8, and have the transmission of carrying out data between the master controller MC of four-wire type order wire and receive, can select control mode with data and carry out the running control of compressor according to the control that comes autonomous controller MC.

The following describes the control action that utilizes the refrigerator that above structure undertaken by control device 1 of the present invention.

(1) possesses the refrigerator of the multi-channel approach (25HP) of three compressors

At first use Figure 10 to illustrate to possess two with output compressor (for example each output is 10HP) with the control action of the multi-channel approach refrigerator of the compressor (for example output is 5HP) of the different outputs of this two compressor.At this moment, 1 pair of this refrigerator of control device carries out six grade volume controlled.The grade of each section is decided by operation mode shown in Figure 11 transfer time.The action of this refrigerator of control is described with energy saver mode particularly.This refrigerator and refrigerator R illustrated in figures 1 and 2 similarly are equipped with the controller 5 as existing refrigerator controlling organization, illustrate that control device 1 controls the running of compressor via this controller 5.Be set at each distribution that correctly is connected with refrigerator on the control substrate 37 of control device 1.

At first, the user operates the ON/OFF (be the multichannel 25HP of Fig. 8) of machine switching with switch SW 4, and forcing change-over switch SW1 to switch to automatic mode automatically, and select energy saver mode by dial 40 and console switch SW6, SW7, control device 1 is via the running control of controller 5 beginning compressors.Carry out the control of six grades at 1 pair of compressor of the next control device of the situation that is connected with this refrigerator.The control of this six grade is to make the running that is varied to the output of six stages according to the running that low-pressure lateral pressure is controlled three compressors, as shown in figure 10, compressors all in grade 1 stops (output 0HP), grade 2 only makes the compressor C running (output 5HP) of 5HP, grade 3 only makes the compressor B running (output 10HP) of 10HP, class 4 makes the compressor B running (output 15HP) of compressor C and the 10HP of 5HP, class 5 makes compressor A and the compressor B running (output 20HP) of 10HP, class 6 makes all compressor A, B, C turns round (output 25HP), carries out the running and the volume controlled of compressor like this.

At this, with class 4 (compressor B and compressor C running, output 15HP) when turning round, if the low pressure value that low-pressure sensor 19 detects is rushed in section A, then control device 1 transmitted the grade rising signals that grade is such of output rising that makes compressor to controller 5 as shown in Figure 11 after one minute.Like this, controller 5 is just grade of the output of compressor rising (promptly shifting to class 5).When if the low pressure value that low-pressure sensor 19 detects continues to be located at section A, then control device 1 transmitted the grade rising signals that grade is such of output rising that makes compressor to controller 5 as shown in Figure 11 after 1.5 minutes.Like this, controller 5 is just grade of the output of compressor rising (promptly shifting to class 6).

On the other hand, rise and the low pressure value reduces and become force value between ON value and the OFF value when being section C by output, then control device 1 is kept present output (no change as shown in figure 11).If the low pressure value is reduced to section D, then control device 1 transmitted the grade dropping signal that grade is such of output decline that makes compressor to controller 5 as shown in Figure 11 after 40 seconds.Like this, controller 5 is just grade of the output of compressor decline (promptly shifting to class 5).If the low pressure value that low-pressure sensor 19 detects continues and when being positioned at section D, then control device 1 transmitted the output that the makes compressor grade dropping signal that grade is such that descends to controller 5 as shown in Figure 11 after 40 seconds.Like this, controller 5 is just grade of the output of compressor decline (promptly shifting to class 4).

If the low pressure value that low-pressure sensor 19 detects is reduced to E, then control device 1 transmitted two the grade dropping signals that grade is such of output decline that make compressor to controller 5 as shown in Figure 11 after 10 seconds.Like this, controller 5 is just two grades of the output of compressor decline (promptly shifting to grade 2).If the low pressure value continues and when being positioned at section E, then control device 1 transmitted the output that makes compressor two the grade dropping signals that grade is such that descend to controller 5 as shown in Figure 11 after 20 seconds.According to this signal, controller 5 just stops the output of compressor decline the running (grade 1) of all compressors.In the running of grade in office, when the low pressure value of low-pressure sensor 19 detections is reduced to the Lim value of regulation, then control device 1 transmits the signal that all compressors are stopped to controller 5 immediately, and like this, all compressors are stopped (shifting to grade 1).

In all compressors stop (being grade 1) on the other hand, the low pressure value that detects when low-pressure sensor 19 rises to section A, and then control device 1 transmitted the grade rising signals that grade is such of output rising that makes compressor to controller 5 as shown in Figure 11 after one minute.Like this, controller 5 is just grade of the output of compressor rising (promptly shifting to grade 2).In all compressors stopped, if the low pressure value rises to section B, then control device 1 transmitted the grade rising signals that grade is such of output rising that makes compressor to controller 5 as shown in Figure 11 after two minutes on the other hand.Like this, controller 5 is just grade of the output of compressor rising (promptly shifting to grade 2).

(2) possess three refrigerators with the multi-channel approach (30HP) of output compressor

Use Figure 12 explanation to possess three control actions below with the multi-channel approach refrigerator of output compressor (for example each output is 10HP).At this moment, 1 pair of this refrigerator of control device carries out the control of fourth class level capacity.The grade of each section is decided by operation mode shown in Figure 13 transfer time.The action of this refrigerator of control is described with high freshness pattern particularly.This refrigerator and refrigerator R illustrated in figures 1 and 2 similarly are equipped with the controller 5 as existing refrigerator controlling organization, illustrate that control device 1 controls the running of compressor via this controller 5.Be set at each distribution that correctly is connected with refrigerator on the control substrate 37 of control device 1.

At first, the user operates the ON/OFF (be the multichannel 30HP of Fig. 8) of machine switching with switch SW 4, and forcing change-over switch SW1 to switch to automatic mode automatically, and be chosen to high freshness pattern by dial 40 and console switch SW6, SW7, control device 1 is via the running control of controller 5 beginning compressors.Carry out the control of fourth class level at 1 pair of compressor of the next control device of the situation that is connected with this refrigerator.The control of this fourth class level is to make the running that is varied to the output of quadravalence section according to the running that low-pressure lateral pressure is controlled three compressors, as shown in figure 12, compressors all in grade 1 stops (output 0HP), grade 2 only makes compressor C running (output 10HP), grade 3 makes two to be compressor B and compressor C running (output 20HP), class 4 makes all compressor A, B, C running (output 30HP), carries out the running and the volume controlled of compressor like this.

At this, with grade 2 (only compressor C running, output 10HP) when turning round, if the low pressure value that low-pressure sensor 19 detects is rushed in section A, then control device 1 transmitted the grade rising signals that grade is such of output rising that makes compressor to controller 5 as shown in Figure 13 after one minute.Like this, controller 5 is just grade of the output of compressor rising (promptly shifting to grade 3).

On the other hand, rise and the low pressure value reduces and become force value between ON value and the OFF value when being section C by output, then control device 1 is kept present output (no change as shown in figure 13).If the low pressure value is reduced to section D, then control device 1 transmitted the grade dropping signal that grade is such of output decline that makes compressor to controller 5 as shown in Figure 13 after 40 seconds.Like this, controller 5 is just grade of the output of compressor decline (promptly shifting to grade 2).

If the low pressure value that low-pressure sensor 19 detects is reduced to section E, then control device 1 transmitted the grade dropping signal that grade is such of output decline that makes compressor to controller 5 as shown in Figure 13 after 10 seconds.Like this, controller 5 just stops the output of a compressor grade of decline the running (grade 1) of all compressors.In the running of grade in office, when the low pressure value of low-pressure sensor 19 detections is reduced to the Lim value of regulation, then control device 1 transmits the signal that all compressors are stopped to controller 5 immediately, and like this, then all compressors are stopped (shifting to grade 1).

In all compressors stop (being grade 1) on the other hand, the low pressure value that detects when low-pressure sensor 19 rises to section A, and then control device 1 transmits the grade rising signals that grade is such of output rising that makes compressor to controller 5 as shown in Figure 13 immediately.Like this, controller 5 is just grade of the output of compressor rising (shifting to grade 2).In all compressors stopped, if the low pressure value rises to section B, then control device 1 transmitted the grade rising signals that grade is such of output rising that makes compressor to controller 5 as shown in Figure 13 after 1.5 minutes on the other hand.Like this, controller 5 is just grade of the output of compressor rising (shifting to grade 2).

(3) possesses the refrigerator of the multi-channel approach (36HP) of four compressors

Use Figure 14 to illustrate then and possess each two control actions respectively with the multi-channel approach refrigerator of output compressor (for example output is that two compressors and the output of 10HP are 8HP two compressors).At this moment, 1 pair of this refrigerator of control device carries out six grade volume controlled.The grade of each section is decided by operation mode shown in Figure 11 transfer time.The action of this refrigerator of control is described with the Night (night shown in Figure 11 is when importing) of outside input particularly.This refrigerator and above-mentioned each refrigerator similarly are equipped with the controller 5 as existing refrigerator controlling organization, illustrate that control device 1 controls the running of compressor via this controller 5.Be set at each distribution that correctly is connected with refrigerator on the control substrate 37 of control device 1.

At first, the user operates the ON/OFF (be the multichannel 36HP of Fig. 8) of machine switching with switch SW 4, and forcing change-over switch SW1 to switch to automatic mode automatically, and be selected to Night by the outside input from 4P2, control device 1 is via the running control of controller 5 beginning compressors.Carry out the control of six grades at 1 pair of compressor of the next control device of the situation that is connected with this refrigerator.The control of this six grade is to make the running that is varied to the output of six stages according to the running that low-pressure lateral pressure is controlled four compressors, as shown in figure 14, compressors all in grade 1 stops (output 0HP), grade 2 only makes the compressor A running (output 10HP) of 10HP, grade 3 makes compressor C and the compressor D running (output 16HP) of two 8HP, class 4 makes compressor A and the compressor B running (output 20HP) of two 10HP, class 5 makes the compressor B running (output 26HP) of compressor C and a compressor D and the 10HP of two 8HP, class 6 makes all compressor A, B, C, D running (output 36HP), control device 1 carries out the running and the volume controlled of compressor like this.

At this, with class 4 (compressor A and compressor B running, output 20HP) when turning round, if the low pressure value that low-pressure sensor 19 detects is rushed in section A, then control device 1 transmitted the grade rising signals that grade is such of output rising that makes compressor to controller 5 as shown in Figure 11 after two minutes.Like this, controller 5 is just grade of the output of compressor rising (promptly shifting to class 5).If the low pressure value that low-pressure sensor 19 detects continues and when being positioned at section A, then control device 1 transmitted the output that the makes compressor grade rising signals that grade is such that rises to controller 5 as shown in Figure 11 after two minutes.Like this, controller 5 is just grade of the output of compressor rising (promptly shifting to class 6).

When the low pressure value becomes section B when rising by output, then control device 1 is kept present output (no change as shown in figure 11), situation and section C that the low pressure value of this Night is positioned at section B similarly do not change output, keep present output ground running.

On the one hand, if the low pressure value is reduced to section D, then control device 1 transmitted the grade dropping signal that grade is such of output decline that makes compressor to controller 5 as shown in Figure 11 after 40 seconds.Like this, controller 5 is just grade of the output of compressor decline (promptly shifting to class 5).If the low pressure value that low-pressure sensor 19 detects continues and when being positioned at section D, then control device 1 transmitted the output that the makes compressor grade dropping signal that grade is such that descends to controller 5 as shown in Figure 11 after 40 seconds.Like this, controller 5 is just grade of the output of compressor decline (promptly shifting to class 4).

On the other hand, if the low pressure value that low-pressure sensor 19 detects is reduced to section E, then control device 1 transmitted the grade dropping signal that grade is such of output decline that makes compressor to controller 5 as shown in Figure 11 after 10 seconds.Like this, controller 5 is just grade of the output of compressor decline (promptly shifting to grade 3).If the low pressure value continues and when being positioned at section E, then control device 1 transmitted the output that the makes compressor grade dropping signal that grade is such that descends to controller 5 as shown in Figure 11 after 20 seconds.According to this signal, controller 5 is just the output of compressor decline (promptly shifting to grade 2).In the running of grade in office, when the low pressure value of low-pressure sensor 19 detections is reduced to the Lim value of regulation, then control device 1 is sent the signal that all compressors are stopped to controller 5 immediately, and like this, then all compressors are stopped (shifting to grade 1).

In all compressors stop (being grade 1), the low pressure value that detects when low-pressure sensor 19 rises to section A, and then control device 1 transmitted the grade rising signals that grade is such of output rising that makes compressor to controller 5 as shown in Figure 11 after two minutes.Like this, controller 5 is just grade of the output of compressor rising (promptly shifting to grade 2).

(4) possess four refrigerators with the multi-channel approach (40HP) of the compressor of output

Possess four multi-channel approach refrigerators and as shown in Figure 15 the running of compressor is carried out the control of five grades with output compressor (for example each output is 10HP).I.e. this five grade control is to make the running that is varied to five-stage output according to the running that low-pressure lateral pressure is controlled four compressors, as shown in figure 15, compressors all in grade 1 stops (output 0HP), grade 2 only makes compressor D running (output 10HP), grade 3 makes two to be compressor C and compressor D running (output 20HP), class 4 makes three to be compressor B, C, D running (output 30HP), class 5 makes all compressor A, B, C, D running (output 40HP), carries out the running and the volume controlled of compressor like this.

The grade transfer time of each section and the refrigerator of above-mentioned (2) are similarly decided by operation mode shown in Figure 13.The action of this refrigerator of control is described with energy saver mode particularly.This refrigerator and above-mentioned each refrigerator similarly are equipped with the controller 5 as existing refrigerator controlling organization, illustrate that control device 1 controls the running of compressor via this controller 5.Similarly be set at each distribution that correctly is connected with refrigerator on the control substrate 37 of control device 1.

At first, the user operates the ON/OFF (be the multichannel 40HP of Fig. 8) of machine switching with switch SW 4, and forcing change-over switch SW1 to switch to automatic mode automatically, and be chosen to energy saver mode by dial 40 and console switch SW6, SW7, control device 1 is via the running control of controller 5 beginning compressors.

At this, with grade 2 (only compressor D running, output 10HP) when turning round, if the low pressure value that low-pressure sensor 19 detects is rushed in section B, then control device 1 transmitted the grade rising signals that grade is such of output rising that makes compressor to controller 5 as shown in Figure 13 after three minutes.Like this, controller 5 is just grade of the output of compressor rising (promptly shifting to grade 3).If the low pressure value that low-pressure sensor 19 detects continues and is positioned at section B, then control device 1 transmitted the grade rising signals that grade is such of output rising that makes compressor to controller 5 as shown in Figure 13 after two minutes.Like this, controller 5 is just grade of the output of compressor rising (promptly shifting to class 4).

If the low pressure value that low-pressure sensor 19 detects is rushed in section A, then control device 1 transmitted the grade rising signals that grade is such of output rising that makes compressor to controller 5 as shown in Figure 13 after one minute.Like this, controller 5 is just grade of the output of compressor rising (promptly shifting to class 5).

On the other hand, rise and the low pressure value reduces and become force value between ON value and the OFF value when being section C by output, then control device 1 is kept present output (no change as shown in figure 13).If the low pressure value is reduced to section D, then control device 1 transmitted the grade dropping signal that grade is such of output decline that makes compressor to controller 5 as shown in Figure 13 after 40 seconds.Like this, controller 5 is just grade of the output of compressor decline (promptly shifting to class 4).If the low pressure value that low-pressure sensor 19 detects continues and when being located at section D, then control device 1 transmitted the output that the makes compressor grade dropping signal that grade is such that descends to controller 5 as shown in Figure 13 after 40 seconds.Like this, controller 5 is just grade of the output of compressor decline (promptly shifting to grade 3).

If the low pressure value that low-pressure sensor 19 detects is reduced to section E, then control device 1 transmitted the grade dropping signal that grade is such of output decline that makes compressor to controller 5 as shown in Figure 13 after 10 seconds.Like this, controller 5 is just grade of the output of compressor decline (promptly shifting to grade 2).If the low pressure value continues and when being positioned at section E, then control device 1 transmitted the output that the makes compressor grade dropping signal that grade is such that descends to controller 5 as shown in Figure 13 after 20 seconds.According to this signal, controller 5 just stops the output of compressor decline the running (grade 1) of all compressors.

In the running of grade in office, when the low pressure value of low-pressure sensor 19 detections is reduced to the Lim value of regulation, then control device 1 is sent the signal that all compressors are stopped to controller 5 immediately, and like this, then all compressors are stopped (shifting to grade 1).

In all compressors stop (being grade 1) on the other hand, the low pressure value that detects when low-pressure sensor 19 rises to section A, and then control device 1 transmitted the grade rising signals that grade is such of output rising that makes compressor to controller 5 as shown in Figure 13 after one minute.Like this, controller 5 is just grade of the output of compressor rising (promptly shifting to grade 2).In all compressors stopped, if the low pressure value rises to section B, then control device 1 transmitted the grade rising signals that grade is such of output rising that makes compressor to controller 5 as shown in Figure 13 after three minutes on the other hand.Like this, controller 5 is just grade of the output of compressor rising (promptly shifting to grade 2).

(5) possesses the refrigerator of the multi-channel approach (65HP) of four compressors

Possess two with output compressor (for example output be 20HP) with as shown in Figure 16 the running of compressor is carried out the control of seven grades with the compressor (for example output is 15HP) of the different outputs of this two compressor and with the multi-channel approach refrigerator of the compressor (for example output is 10HP) of the different outputs of these compressors.I.e. this seven grade control is the running that is varied to the output of seven stages according to the running that low-pressure lateral pressure is controlled four compressors, as shown in figure 16, compressors all in grade 1 stops (output 0HP), grade 2 only makes compressor D running (output 10HP), grade 3 only makes compressor B running (output 20HP), class 4 makes two to be compressor B and compressor D running (output 30HP), class 5 makes two to be compressor A and compressor B running (output 40HP), class 6 makes three to be compressor A, B, D running (output 50HP), grade 7 makes all compressor A～D running (output 65HP), carries out the running and the volume controlled of compressor like this.

At this moment, the grade of each section is decided by operation mode shown in Figure 11 transfer time.The action of this refrigerator of control is described with high freshness pattern particularly.This refrigerator and above-mentioned each refrigerator similarly are equipped with the controller 5 as existing refrigerator controlling organization, illustrate that control device 1 controls the running of compressor via this controller 5.Similarly be set at each distribution that correctly is connected with refrigerator on the control substrate 37 of control device 1.

At first, the user operates the ON/OFF (be the multichannel 65HP of Fig. 8) of machine switching with switch SW 4, and forcing change-over switch SW1 to switch to automatic mode automatically, and be chosen to high freshness pattern by dial 40 and console switch SW6, SW7, control device 1 is via the running control of controller 5 beginning compressors.

At this, with grade 2 (only compressor D running, output 10HP) when turning round, if the low pressure value that low-pressure sensor 19 detects is rushed in section B, then control device 1 transmitted the grade rising signals that grade is such of output rising that makes compressor to controller 5 as shown in Figure 11 after 1.5 minutes.Like this, controller 5 is just grade of the output of compressor rising (promptly shifting to grade 3).If the low pressure value that low-pressure sensor 19 detects continues and is positioned at section B, then control device 1 transmitted the grade rising signals that grade is such of output rising that makes compressor to controller 5 as shown in Figure 11 after 1.5 minutes.Like this, controller 5 is just grade of the output of compressor rising (promptly shifting to class 4).

If the low pressure value that low-pressure sensor 19 detects is rushed in section A, then control device 1 transmitted two the grade rising signals that grade is such of output rising that make compressor to controller 5 as shown in Figure 11 after one minute.Like this, controller 5 is just two grades of the output of compressor rising (promptly shifting to class 6).

If the low pressure value that low-pressure sensor 19 detects is reduced to section E, then control device 1 transmitted two the grade dropping signals that grade is such of output decline that make compressor to controller 5 as shown in Figure 11 after 10 seconds.Like this, controller 5 is just two grades of the output of compressor decline (promptly shifting to grade 2).If the low pressure value continues and when being positioned at section E, then control device 1 transmitted the output that makes compressor two the grade dropping signals that grade is such that descend to controller 5 as shown in Figure 11 after 20 seconds.Like this, controller 5 just descends the output of compressor and stops all compressors (grade 1).

In the running of grade in office, when the low pressure value of low-pressure sensor 19 detections is reduced to the Lim value of regulation, then control device 1 is sent the signal that all compressors are stopped to controller 5 immediately, and like this, all compressors are stopped (shifting to grade 1).

In all compressors stop (being grade 1) on the other hand, the low pressure value that detects when low-pressure sensor 19 rises to section A, and then control device 1 transmits two the grade rising signals that grade is such of output rising that make compressor to controller 5 as shown in Figure 11 immediately.Like this, controller 5 is just two grades of the output of compressor rising (shifting to grade 3).In all compressors stopped, if the low pressure value rises to section B, then control device 1 transmitted the grade rising signals that grade is such of output rising that makes compressor to controller 5 as shown in Figure 11 after 1.5 minutes on the other hand.Like this, controller 5 is just grade of the output of compressor rising (promptly shifting to grade 2).

(6) possesses the refrigerator of the multi-channel approach (70HP) of four compressors

Possess three with output compressors (for example output be 20HP) with as shown in Figure 17 the running of compressor is carried out the control of eight grades with the multi-channel approach refrigerator of the compressor (for example output is 10HP) of the different outputs of these compressors.I.e. this eight grade control is the running that is varied to the output of eight stages according to the running that low-pressure lateral pressure is controlled four compressors, as shown in figure 17, compressors all in grade 1 stops (output 0HP), grade 2 only makes compressor D running (output 10HP), grade 3 only makes compressor C running (output 20HP), class 4 makes two to be compressor C and compressor D running (output 30HP), class 5 makes two to be compressor B and compressor C running (output 40HP), class 6 makes three to be compressor B, C, D running (output 50HP), grade 7 makes three compressors A～C running (output 60HP), grade 8 makes all compressor A～D running (output 70HP), carries out the running and the volume controlled of compressor like this.

At this moment, the grade of each section is decided by above-mentioned operation mode shown in Figure 11 transfer time.Concrete control action is identical with above-mentioned each refrigerator, therefore in this description will be omitted.

(7) possesses the refrigerator of the multi-channel approach (75HP) of four compressors

Possess three with output compressors (for example output be 20HP) with as shown in Figure 18 the running of compressor is carried out the control of five grades with the multi-channel approach refrigerator of the compressor (for example output is 15HP) of the different outputs of these compressors.I.e. this five grade control is the running that is varied to five-stage output according to the running that low-pressure lateral pressure is controlled four compressors, as shown in figure 18, compressors all in grade 1 stops (output 0HP), grade 2 only makes compressor D running (output 15HP), grade 3 makes two to be compressor C and compressor D running (output 35HP), class 4 makes three to be compressor B～D running (output 55HP), class 5 makes all compressor A～D running (output 75HP), carries out the running and the volume controlled of compressor like this.

At this moment, the grade of each section is decided by above-mentioned operation mode shown in Figure 13 transfer time.Concrete control action is identical with above-mentioned each refrigerator, therefore in this description will be omitted.

(8) possesses the refrigerator of the multi-channel approach (80HP) of four compressors

Possess four multi-channel approach refrigerators and as shown in Figure 19 the running of compressor is carried out the control of five grades with output compressor (for example output is 20HP).I.e. this five grade control is the running that is varied to five-stage output according to the running that low-pressure lateral pressure is controlled four compressors, as shown in figure 19, compressors all in grade 1 stops (output 0HP), grade 2 only makes compressor D running (output 20HP), grade 3 makes two to be compressor C and compressor D running (output 40HP), class 4 makes three to be compressor B～D running (output 60HP), class 5 makes all compressor A～D running (output 80HP), carries out the running and the volume controlled of compressor like this.

(9) possesses the refrigerator of the multi-channel approach (85HP) of five compressors

Possess three with output compressor (for example output be 20HP) with as shown in Figure 20 the running of compressor is carried out the control of nine grades with the compressor (for example output is 15HP) of the different outputs of this three compressor and with the multi-channel approach refrigerator of the compressor (for example output is 10HP) of the different outputs of these compressors.I.e. this nine grade control is the running that is varied to the output of nine stages according to the running that low-pressure lateral pressure is controlled five compressors, as shown in figure 20, compressors all in grade 1 stops (output 0HP), grade 2 only makes compressor E running (output 10HP), grade 3 only makes compressor C running (output 20HP), class 4 makes two to be compressor C and compressor E running (output 30HP), class 5 makes two to be compressor B and compressor C running (output 40HP), class 6 makes three to be compressor B, C and compressor E running (output 50HP), grade 7 makes with the three compressors A of output～C running (output 60HP), grade 8 makes four to be compressor A～C and compressor E running (output 70HP), grade 9 makes all compressor A～E running (output 85HP), carries out the running and the volume controlled of compressor like this.

(10) possesses the refrigerator of the multi-channel approach (90HP) of five compressors

Possess four with output compressors (for example output be 20HP) with like that the running of compressor is carried out the control of ten grades as shown in figure 21 with the multi-channel approach refrigerator of the compressor (for example output is 10HP) of the different outputs of this four compressor.I.e. this ten grade control is the running that is varied to the output of ten stages according to the running that low-pressure lateral pressure is controlled five compressors, as shown in figure 21, compressors all in grade 1 stops (output 0HP), grade 2 only makes compressor E running (output 10HP), grade 3 only makes compressor D running (output 20HP), class 4 makes two to be compressor D and compressor E running (output 30HP), class 5 makes two to be compressor C and compressor D running (output 40HP), class 6 makes three to be compressor C～D running (output 50HP), grade 7 makes with the three compressors B of output～D running (output 60HP), grade 8 makes four to be compressor B～D and compressor E running (output 70HP), grade 9 makes with the four compressors A of output～D running (output 80HP), grade 10 makes all compressor A～E running (output 90HP), carries out the running and the volume controlled of compressor like this.

At this moment, the grade of each section is decided by above-mentioned operation mode shown in Figure 11 transfer time.Concrete control action is identical with above-mentioned each refrigerator, therefore omits explanation.

(11) possesses the refrigerator of the multi-channel approach (95HP) of five compressors

Possess four with output compressors (for example output be 20HP) with like that the running of compressor is carried out the control of six grades as shown in figure 22 with the multi-channel approach refrigerator of the compressor (for example output is 15HP) of the different outputs of this four compressor.The control of this six grade is to make the running that is varied to the output of six stages according to the running that low-pressure lateral pressure is controlled five compressors, as shown in figure 22, compressors all in grade 1 stops (output 0HP), grade 2 only makes compressor E running (output 15HP), grade 3 makes two to be compressor D and compressor E running (output 35HP), class 4 makes three to be compressor C～E running (output 55HP), class 5 makes four to be compressor B～E running (output 75HP), class 6 makes all compressor A～E running (output 95HP), carries out the running and the volume controlled of compressor like this.

At this moment, the grade of each section is decided by described operation mode shown in Figure 13 transfer time.Concrete control action is identical with above-mentioned each refrigerator, therefore omits explanation.And possess five multi-channel approach refrigerators and also similarly carry out the control of five grades with Figure 22 with the output compressor.

(12) possess two different multi-channel approach refrigerators of exporting compressors

The multi-channel approach refrigerator that possesses the compressor (for example output is that compressor and the output of 20HP are the compressors of 10HP) of two different outputs as the refrigerator R of present embodiment Fig. 1 and Fig. 2 explanation carries out the running of compressor the control of fourth class level as shown in figure 23 like that.The control of this fourth class level is to make the running that is varied to the output of quadravalence section according to the running that low-pressure lateral pressure is controlled two compressors, as shown in figure 23, compressors all in grade 1 stops (output 0HP), grade 2 only makes compressor B running (output 10HP), grade 3 only makes compressor A running (output 20HP), class 4 makes two compressor A, B running (output 30HP), carries out the running and the volume controlled of compressor like this.

At this moment, the grade of each section is decided by described operation mode shown in Figure 13 transfer time.Concrete control action is identical with above-mentioned each refrigerator, therefore omits explanation.

(13) possess two with output compressor and three multi-channel approach refrigerators with the output compressor

The multi-channel approach refrigerator that possesses two compressors with output (for example output is 10HP) carries out the running of compressor the control of three grades as shown in figure 24 like that, and the grade of each section is decided by described operation mode shown in Figure 13 transfer time.And the multi-channel approach refrigerator that possesses three compressors with output (for example output is 10HP) carries out the running of compressor the control of fourth class level as shown in figure 25 like that, and the grade of each section is decided by described operation mode shown in Figure 13 transfer time.

(14) refrigerator that constitutes by a compressor (unit kind)

Above-mentioned (1)～(14) are controlled the refrigerator that possesses many (two～five) compressors, but also can control an only compressor by control device 1 of the present invention certainly.For example to being that the refrigerator that the compressor of 10HP constitutes is controlled as shown in figure 26 like that by output, grade transfer time of each section and above-mentionedly similarly decide by operation mode shown in Figure 13.

As described in detail above, because having a plurality of volume controlled modes, control device 1 of the present invention also can select these control modes, so can control the compressor more than at least one accurately according to the platform number of compressor.Particularly the refrigerator of other companies that control method is different also can be connected with control device 1 of the present invention, utilizes this control device 1 can carry out volume controlled accurately.And, therefore can also do one's utmost to suppress the increase of cost by control device 1 of the present invention and existing refrigerator just being connected the existing refrigerator of volume controlled accurately.

Particularly possess the handover operation mechanism that is used to switch the employed cold-producing medium kind of setting refrigerator freeze cycle, can change the pressure limit that low-pressure lateral pressure setting operation mechanism can set according to the cold-producing medium kind that handover operation mechanism sets.

Existing refrigerator low tension switch that is possessed and the contact that is opened and closed by control device 1 control of the present invention are connected in series, like this, can use the existing low tension switch of refrigerator as safety device, can seek to improve security.

As previously mentioned, control device 1 of the present invention and master controller MC as outside host control device between possess and be used to carry out data and send the transmitter-receiver structure that receives, therefore, can select control mode with data and carry out the running control of compressor according to the control that receives via the transmitter-receiver structure from host control device.Like this, by like that respectively control device 1 of the present invention being connected with a plurality of refrigerators as shown in figure 27, just also can by master controller MC come centralized Control they.

Especially, control, like this, just can carry out the centralized Control of refrigerator more accurately according to the running that the control that comes autonomous controller MC that receives via the transmitter-receiver structure is carried out compressor with the setting value of data mesolow lateral pressure.

As previously mentioned, control device 1 of the present invention possesses: with master controller MC between to be connected the order wire connecting portion that is used to carry out data and sends the two-wire system that receives and four-wire type order wire, to be used for according to the order wire that this order wire connecting portion is connected be the handover operation mechanism that two-wire system or four-wire type are come commutation circuit, like this can also with have two-wire system and four-wire type in the host control device of any order wire corresponding.Can more improve versatility.

Claims

1. the control device of a refrigerator is controlled the running of described compressor according to the low-pressure lateral pressure of at least one the above compressor that constitutes the refrigerator freeze cycle, it is characterized in that, comprising:

Be used to set described compressor low-pressure lateral pressure setting value low-pressure lateral pressure setting operation mechanism,

Detect described compressor low-pressure lateral pressure low-pressure lateral pressure testing agency,

The setting value that the low-pressure lateral pressure of the described compressor that detects according to this low-pressure lateral pressure testing agency and described low-pressure lateral pressure setting operation mechanism set come in accordance with regulations control mode carry out the controlling organization of described compressor operation control,

Be used to switch the handover operation mechanism that sets the employed cold-producing medium kind of described refrigerator freeze cycle,

The cold-producing medium kind that described controlling organization sets according to described handover operation mechanism changes the pressure limit that described low-pressure lateral pressure setting operation mechanism can set.

2. the control device of refrigerator as claimed in claim 1, it is characterized in that, and the host control device of outside between possess and be used to carry out data and send the transmitter-receiver structure that receives, the running that described controlling organization is carried out described compressor according to the control from described host control device that receives via described transmitter-receiver structure with the setting value of the low-pressure lateral pressure in the data is controlled.

3. the control device of refrigerator as claimed in claim 2, it is characterized in that possessing: with described host control device between to be connected the order wire connecting portion that is used to carry out data and sends the two-wire system that receives and four-wire type order wire, to be used for according to the described order wire that this order wire connecting portion is connected be the handover operation mechanism that two-wire system or four-wire type are come commutation circuit.

As claim 1 to the control device of each described refrigerator of claim 3, it is characterized in that the low tension switch that contact that is opened and closed by described controlling organization control and described refrigerator possess is connected in series.