CN1032934C

CN1032934C - Ice producer with timing relay

Info

Publication number: CN1032934C
Application number: CN91101596A
Authority: CN
Inventors: 赖乙赞
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-03-12
Filing date: 1991-03-12
Publication date: 1996-10-02
Anticipated expiration: 2006-03-12
Also published as: GB2253688B; GB2253688A; GB9205250D0; CN1064739A

Abstract

The present invention relates to a time relay type refrigerator, which comprises a casing, and the inner of the present invention is provided with an evaporator, a compressor, and a condenser, wherein a low pressure refrigerant gas pipeline is arranged between the outlet of the evaporator and the inlet of the compressor; the output of the compressor is connected with a high-pressure refrigerant gas pipeline pressure passing through a controller to the condenser; the outlet of the condenser is connected with a high pressure fluid pipeline passing through a dryer to an expansion valve; a low pressure fluid pipeline is arranged between the expansion valve and the inlet of the evaporator; the compressor is connected with another high-pressure refrigerant gas pipeline passing through a high-pressure refrigerant gas electromagnetic valve and a non-return valve to the inlet of the evaporator; in addition, a control circuit is provided with a time control apparatus to preset a timing control ice maker to inject water, make ice, harvest ice, replenish water to make ice, etc.

Description

Ice producer with timing relay

The present invention relates to a kind of improved ice machine, particularly a kind of can be from start to finish, inferiorly go out qualified full ice cube, again the ice producer with timing relay of maintenance very easily.The time controller that its time relay is formed is applicable to the ice machine of all size.

Existing time motor type TM time controller ice machine, not the stopping to exchange by time motor TM of its ice making cycle and harvest cycle finished, as shown in Figure 1, because 360 ° of needs of the every rotation of output cam of the reduction gear that the time motor drives 15 minutes, wherein 1.5 minutes is harvest cycle, 13.5 minute be the latter part of ice making cycle, so following two kinds of situations will occur after starting ice machine:

1) when the contact 1 and 4 of time motor TM was connected, then ice machine was first water filling (time necessarily is shorter than 1.5 minutes), ice making then; Water filling (results ice pellets), ice making, ceaselessly circulation.

2) when the contact 1 of time motor TM and 2 was connected, ice machine just began ice making, at this moment because water shortage and the time ice that causes inadequately making the first time is the hollow ice cube of underproof half block.Just continue the automatic circulation of water filling (results ice cube), ice making then.

Usually the probability that latter event occurs is about 90%, promptly is 9 times of probability that first kind of situation occur.As well-known, the ice that ice machine is made for the first time all is the hollow ice cube of underproof half block.

Because 360 ° of needs of the every rotation of output cam of the reduction gear that the time motor drives 15 minutes, when outdoor water temperature changes, must adjust ice making (or results) during the cycle, then Dui Ying results (or ice making) cycle also changes, one becomes big, and another just diminishes.Obviously, regulate the ice cube size just has been not easy.

In addition, because the complex structure of time motor, specificity is strong.Maintenance is very difficult in case be out of order.Bothersome also expensive.

Therefore, Chang Yong time motor type ice machine exists problems such as the quality problems of ice cube and maintenance difficult really.

Purpose of the present invention will provide a kind of improved ice producer with timing relay exactly.It had both possessed the constructed requirement of time motor type ice machine, had overcome above-mentioned shortcoming again.

Ice machine start of the present invention back just can be made the full ice cube consistent with icing mould for the first time, and the qualification rate of ice cube is close to 100%, and the maintenance of ice machine itself is easy, and used relay can cheap have been bought everywhere, and cost and energy consumption are all lower.

The objective of the invention is to finish as follows: ice producer with timing relay of the present invention, comprise a shell, dispose evaporimeter in the shell, compressor, and condenser, be connected with the low pressure refrigerant gas pipeline between evaporator outlet and the suction port of compressor, compressor outlet is connected with the higher pressure refrigerant gas pipeline through pressure controller to condenser, condensator outlet drying device to expansion valve is connected with the high pressure refrigerant liquid pipeline, be connected with the low pressure refrigerant fluid pipeline between expansion valve and the evaporator inlet, compressor outlet is connected with another higher pressure refrigerant gas pipeline through higher pressure refrigerant gas magnetic valve and non-return valve to evaporator inlet; And also comprise the ice mould, ice tray, water pump and fan etc.;

It is characterized in that, described ice machine also has a control circuit, described control circuit is by the water filling of a time controller of being made up of two time relays and two auxiliary reclays with the timing controlled ice machine that presets, ice making, the cyclic process of water filling (results ice cube), ice making, described control circuit also comprises another auxiliary reclay.

Below with reference to accompanying drawing the present invention is described in detail.

Fig. 1 is the schematic diagram of the time motor type time controller ice machine of prior art;

Fig. 2 is the schematic diagram of refrigerating of ice producer with timing relay refrigeration system of the present invention;

Fig. 3 is the control circuit figure of ice producer with timing relay of the present invention.

In ice machine of the present invention shown in Figure 2, a shell (not shown) is arranged, dispose evaporimeter 201 in the shell, compressor 104, and condenser 206; Be connected with low pressure refrigerant gas pipeline 202 between evaporimeter 201 outlets and compressor 104 inlets, compressor 104 outlets are connected with higher pressure refrigerant gas pipeline 205 through pressure controller 204 to condenser 206 inlets, and outlet drying device 208 to the expansion valve 209 of condenser 206 is connected with high pressure refrigerant liquid pipeline 207.Be connected with low pressure refrigerant fluid pipeline 212 between the inlet of expansion valve 209 and evaporimeter 201.Compressor outlet is connected with another higher pressure refrigerant gas pipeline through higher pressure refrigerant gas magnetic valve 107 and non-return valve 211 to evaporator inlet.In addition, ice mould in addition, ice tray, water pump, fan etc., and control circuit (seeing Fig. 3 for details).

Refrigerant liquid evaporates in evaporimeter 201 through expansion valve 209, and the refrigerant gas after the evaporation is compressed in low pressure refrigerant gas pipeline 202 pumps to compressor 104, and the pressure of refrigerant gas is raise.Be transported in the condenser 206 through higher pressure refrigerant gas pipeline 205 then, when fan during to condenser 206 blowings, make refrigeration cause gas and constantly lowering the temperature, refrigerant gas just is condensed into liquid gradually.Refrigerant liquid absorbs heat by high pressure refrigerant liquid pipeline 207 and evaporates in expansion valve 209 is imported evaporimeter 201 again.Cold-producing medium comes to this and circulates in the refrigeration system of ice machine.

107 of higher pressure refrigerant gas magnetic valves are higher pressure refrigerant gas input evaporimeter 201 defrostings, for the usefulness of results ice cube at harvest cycle.

In a most preferred embodiment of the present invention shown in Figure 3, represent with same label with parts identical among Fig. 2, label 101 expression main switches, 102 expression compressor switches, the contactor of 103 expression control compressors, 104 expression compressors, the contact of 105 expression compressor contactors, 106 expression water supply electromagnetic valves, 107 expression cold-producing medium gases at high pressure magnetic valves, 108 expression water pumps, 109 expression fans, 110 expression ice tray temperature controllers, 111 expression evaporator temperature controllers, 1TR, 2TR and 3TR represent three time relays, MR, 1MR and 2MR represent three auxiliary reclays.

When main switch 101 and compressor switch 102 closed and when making power connection, because the coil of relay 1MR is energized, make the contact 9 and 11 closures of this relay, thereby the coil of relay 3TR is energized.Through suitable time-delay, the contact 6 of relay 3TR and 8 closures.So make the coil excited target of relay 2MR, the contact 3 of relay 2MR and 7 disconnects contact 1 and 4 closures.Thereby water supply electromagnetic valve 106 and refrigerant gas magnetic valve 107 are worked and the beginning water filling.Meanwhile the contact 1 and 4 of relay 1MR is during ice making, before relay 2TR coil motion picks up counting, separates the usefulness of relay 2 MR coils.The contact 1 of relay 2MR and 5 action are then worked when autostop.

As mentioned above, when main switch was closed, relay 1TR coil is excited target also, through after about 90 seconds, and the contact 6 of relay 1TR and 8 closures, then make the coil excited target of relay MR, its contact 1 and 5, and

contact

3 and 7 disconnects.Thereby making the coil losing electricity of relay 1MR, the contact 9 of relay 1MR and 11 disconnects.The result makes the coil losing electricity of relay 3 TR, and its contact 6 and 8 disconnects.So make the coil losing electricity of relay 2MR, its

contact

3 and 7 closures, contact 1 and 4 disconnects.Water supply electromagnetic valve 106 and refrigerant gas magnetic valve 107 quit work.Water filling has just been stopped.Meanwhile, water pump and fan entry into service, ice making cycle has just begun.

Ice machine begins after the ice making, and water temperature constantly descends.Make 111 actions of evaporator temperature controller when water temperature drops to (for example 0 ℃), its contact 1 and 4 disconnects contact 1 and 2 closures.So make the coil excited target of time relay 2TR.After about 15 minutes, the contact 5 of time relay 2TR and 8 disconnects, and makes the coil losing electricity of time relay 1TR, and its contact 6 and 8 disconnects.Thereby make the coil losing electricity of relay MR, its contact 1 and 5, and

contact

3 and 7 is just closed.So make the coil excited target of relay 1MR, its contact 9 and 11 closures.Thereby make the coil excited target of relay 3TR, and through suitable time-delay, its contact 6 and 8 closures.The result makes the coil excited target of relay 2MR, and its

contact

3 and 7 disconnects, contact 1 and 4 closures, and water pump and fan just shut down, and ice making is finished.Simultaneously, the water supply electromagnetism close 106 and refrigerant gas magnetic valve 107 start working, begin to gather in the crops ice cube and supplementary water injection.

Because the coil losing electricity of relay MR, its contact 3 and 6 disconnects.So make the coil losing electricity of relay 2TR, its contact 5 and 8 closures.Thereby make the coil excited target of relay 1TR, and after 90 seconds, its contact 6 and 8 closures.So make the coil excited target of relay MR, its contact 1 and 5 and

contact

3 and 7 all disconnect.Thereby making the coil losing electricity of relay 1MR, its contact 9 and 11 disconnects.The result makes the coil losing electricity of relay 3TR, and its contact 6 and 8 disconnects.Thereby make the coil losing electricity of relay 2MR, its contact 1 and 4 disconnects

contact

3 and 7 closures.Water supply electromagnetic valve 106 and refrigerant gas magnetic valve 107 just quit work.The results ice cube finishes, and supplementary water injection stops.Water pump and fan entry into service.Ice making cycle begins again, so goes round and begins again.

During the results ice cube, in case receive the autostop signal, promptly the contact 1 of ice

tray temperature controller

110 and 2 disconnects, and the ice machine hard stop is because the contact 5 and 1 of relay 2MR disconnects at this moment.

If receive the autostop signal during ice making, promptly the contact 2 of ice tray temperature controller 110 and 1 disconnects, and at this time because the contact 5 and 1 of relay 2MR is closed, so ice making is still proceeded, finishes until ice making.

After ice making is finished just desire begin to gather in the crops when ice cube and the supplementary water injection because the contact 9 of relay 1MR and 11 closures, time relay 3TR excited target, through suitable time-delay, its contact 6 and 8 closures.The coil excited target of relay 2MR, its contact 5 and 1 disconnects, thereby cuts off the electricity supply.So wink promptly shuts down, and ice cube still is retained within the copper mold.Through more than one hour, ice cube just all fell by spells.

Time relay 3TR shown in Fig. 3 only is in order to make ice making cycle and harvest cycle more stable.In another most preferred embodiment of the present invention, in the control circuit of ice producer with timing relay, saved relay 3TR, can obtain similar invention effect equally.

Though above-described is most preferred embodiment of the present invention, the present invention is not limited only to the foregoing description.Those skilled in the art is to make various improvedly under the prerequisite that does not break away from inventive concept, and these improvement are applicable to the ice machine that each is big or small.

Claims

1. ice producer with timing relay, comprise a shell, dispose evaporimeter in the shell, compressor, and condenser, be connected with the low pressure refrigerant gas pipeline between evaporator outlet and the suction port of compressor, compressor outlet is connected with the higher pressure refrigerant gas pipeline through pressure controller to condenser inlet, condensator outlet drying device to expansion valve is connected with the high pressure refrigerant liquid pipeline, be connected with low pressure refrigerant fluid pipeline compressor outlet between expansion valve and the evaporator inlet and be connected with another higher pressure refrigerant gas pipeline through higher pressure refrigerant gas magnetic valve and non-return valve to evaporator inlet, and also comprise the ice mould, ice tray, water pump and fan etc.;

It is characterized in that, described ice machine also has a control circuit, described control circuit comprises two time relays (1TR and 2TR), and three auxiliary reclay (MR, 1MR and 2MR), when described control circuit and power connection, the coil of relay 1MR and 2MR is excited target in succession, thereby make magnetic valve 106 and 107 work and the beginning water filling, the coil excited target of time relay 1TR meanwhile, this time relay 1TR picks up counting, after about 90 seconds, make the coil excited target of relay MR, relay MR control relay 1MR and 2MR, make it outage, magnetic valve 106 and 107 promptly quits work, the same time, water pump 108 and fan 109 ice making cycle of starting working begins, when water temperature for example drops to 0 ℃, 111 actions of evaporator temperature controller, make the coil excited target of time relay 2TR, make the coil losing electricity of time relay 1TR through time relay 2TR after 15 minutes, thereby make the coil losing electricity of relay MR, make the coil excited target of relay 1MR and 2MR, so water pump 108 and fan 109 quit work, ice making cycle is finished; And magnetic valve 106 and 107 is started working, and begins to gather in the crops ice cube and supplementary water injection; Through 90 seconds, harvest cycle is finished, and begins the ice making cycle of a new round again, so goes round and begins again; Fill ice cube until container, make thermometer 110 action, autostop when this ice making cycle is finished then when thermometer 110 restores, is again Auto Power On and must is from supplementary water injection (harvest cycle), begins new circulation again again.

2. according to the ice producer with timing relay of claim 1, it is characterized in that described control circuit has one to make ice making cycle and the more stable time relay 3TR of harvest cycle.