CN220338828U - Defrosting system of marine ice machine - Google Patents
Defrosting system of marine ice machine Download PDFInfo
- Publication number
- CN220338828U CN220338828U CN202321561137.5U CN202321561137U CN220338828U CN 220338828 U CN220338828 U CN 220338828U CN 202321561137 U CN202321561137 U CN 202321561137U CN 220338828 U CN220338828 U CN 220338828U
- Authority
- CN
- China
- Prior art keywords
- intermediate relay
- voltage conversion
- conversion module
- defrosting system
- electrically connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010257 thawing Methods 0.000 title claims abstract description 52
- 238000006243 chemical reaction Methods 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Defrosting Systems (AREA)
Abstract
The application relates to a marine ice machine defrosting system detects the thickness of frost layer through detection module, and then according to the coil and the voltage conversion module intercommunication of the thickness control intermediate relay of frost layer, and then the normally open contact of intermediate relay and the normally closed contact switching state of intermediate relay for heating device operation defrosting, and fan stop operation. After the frost is melted, the detection and measurement module detects no frost, the coil of the intermediate relay is controlled to be disconnected with the voltage conversion module, the normally open contact of the intermediate relay and the normally closed contact of the intermediate relay are restored to an initial state, the heating device is stopped, and the fan is restarted. By adopting the defrosting mode, the defrosting start and duration are controlled according to the actual frosting condition, the effectiveness of defrosting is improved, the refrigerating effect of the ice machine is improved, and the energy consumption is saved.
Description
Technical Field
The application relates to the technical field of ice machine defrosting, in particular to a marine ice machine defrosting system.
Background
The ice house plays a key role in prolonging the shelf life of food and protecting the quality and sanitation of the food. In actual work, the opening and closing of the warehouse door are frequent, so that the frosting of the evaporator in the ice warehouse is generally serious, the efficiency of cold exchange in the ice warehouse is greatly reduced, the ice machine works for a long time, and the warehouse temperature cannot meet the requirement.
In the traditional defrosting scheme, a defrosting thermostat is adopted for defrosting, the defrosting process is automatically started according to preset interval time, and the defrosting time is not manually set according to actual frosting conditions, and has deviation from actual requirements. The rough defrosting method has poor defrosting effectiveness and seriously affects the refrigerating effect of the ice machine.
Disclosure of Invention
Based on the above, it is necessary to provide a defrosting system for a marine ice machine aiming at the problems that the conventional defrosting scheme is rough, the defrosting effectiveness is poor, and the refrigerating effect of the ice machine is seriously affected.
The application provides a marine ice machine defrosting system, includes:
an air switch, the input end of the air switch is electrically connected to an alternating current power supply;
a main circuit directly or indirectly electrically connected to the output of the air switch;
a heat exchange circuit directly or indirectly electrically connected to the output of the air switch;
a control circuit connected in parallel with the heat exchange circuit;
the main circuit comprises a heating device and a normally open contact of the intermediate relay, and the heating device is connected in series with the normally open contact of the intermediate relay;
the heat exchange circuit comprises a fan and a normally-closed contact of the intermediate relay, and the fan and the normally-closed contact of the intermediate relay are connected in series;
the control circuit includes:
the voltage conversion module is directly or indirectly electrically connected to the output end of the air switch;
a coil of an intermediate relay electrically connected to the voltage conversion module;
and the detection module is electrically connected to the voltage conversion module and is used for controlling the on-off of the coil of the intermediate relay and the voltage conversion module according to the thickness of the detected frost layer.
The application relates to a marine ice machine defrosting system detects the thickness of frost layer through detection module, and then according to the coil and the voltage conversion module intercommunication of the thickness control intermediate relay of frost layer, and then the normally open contact of intermediate relay and the normally closed contact switching state of intermediate relay for heating device operation defrosting, and fan stop operation. After the frost is melted, the detection and measurement module detects no frost, the coil of the intermediate relay is controlled to be disconnected with the voltage conversion module, the normally open contact of the intermediate relay and the normally closed contact of the intermediate relay are restored to an initial state, the heating device is stopped, and the fan is restarted. By adopting the defrosting mode, the defrosting start and duration are controlled according to the actual frosting condition, the effectiveness of defrosting is improved, the refrigerating effect of the ice machine is improved, and the energy consumption is saved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application and to provide a further understanding of the application with regard to the other features, objects and advantages of the application. The drawings of the illustrative embodiments of the present application and their descriptions are for the purpose of illustrating the present application and are not to be construed as unduly limiting the present application.
Fig. 1 is a block diagram of a marine ice machine defrosting system according to an embodiment of the present application.
Fig. 2 is an electrical schematic diagram of a marine ice machine defrosting system according to an embodiment of the present application.
Reference numerals:
100-a defrosting system of the marine ice machine; QF-air switch; 110-a main circuit; 111-heating means; R1-R5-heating wires; k1.1-coil of intermediate relay; k1.2 is a normally open contact of the intermediate relay; k1.3 is a normally closed contact of the intermediate relay; 120-heat exchange circuit; an M-blower; 130-a control circuit; u1-a voltage conversion module; 131-a detection module; VH 1.1-light sensing element; VH 1.2-photosensitive normally open contacts; 140-overheat protection means; FU 1-first fuse; FU 2-second fuse.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The present application provides a marine ice machine defrosting system 100. It should be noted that, the marine ice machine defrosting system 100 provided in the present application is used for defrosting an evaporator in a refrigerator.
In one embodiment of the present application, as shown in fig. 1 and 2, the ice maker defrosting system 100 for a ship comprises an air switch QF, a main circuit 110, a heat exchanging circuit 120 and a control circuit 130.
Specifically, the input end of the air switch QF is electrically connected to an alternating current power supply; the main circuit 110 is directly or indirectly electrically connected to the output terminal of the air switch QF; the heat exchange circuit 120 is directly or indirectly electrically connected to the output of the air switch QF; a control circuit 130 is connected in parallel with the heat exchange circuit 120 and is directly or indirectly electrically connected to the output of the air switch QF.
Specifically, the main circuit 110 includes a heating device 111 and a normally open contact K1.2 of the intermediate relay, and the heating device 111 and the normally open contact K1.2 of the intermediate relay are connected in series.
Specifically, the heat exchange circuit 120 includes a fan M and a normally closed contact K1.3 of the intermediate relay, and the fan M and the normally closed contact K1.3 of the intermediate relay are connected in series.
Specifically, the control circuit 130 includes: the device comprises a voltage conversion module U1, a coil K1.1 of an intermediate relay and a detection module 131. The voltage conversion module U1 is directly or indirectly electrically connected to the output end of the air switch QF; the coil K1.1 of the intermediate relay is electrically connected to the voltage conversion module U1; the detection module 131 is electrically connected to the voltage conversion module U1, and is configured to control on-off of the coil K1.1 of the intermediate relay and the voltage conversion module U1 according to the thickness of the detected frost layer.
In this embodiment, the detection module 131 detects the thickness of the frost layer, and then controls the coil K1.1 of the intermediate relay to be communicated with the voltage conversion module U1 according to the thickness of the frost layer, and then the normally open contact K1.2 of the intermediate relay and the normally closed contact K1.3 of the intermediate relay are switched to make the heating device 111 operate to defrost, and the fan M stops operating. After the frost melting is finished, the detection and measurement module detects no frost, the coil K1.1 of the intermediate relay is controlled to be disconnected with the voltage conversion module U1, the normally open contact K1.2 of the intermediate relay and the normally closed contact K1.3 of the intermediate relay are restored to an initial state, the heating device 111 is stopped, and the fan M is restarted. By adopting the defrosting mode, the defrosting start and duration are controlled according to the actual frosting condition, the effectiveness of defrosting is improved, the refrigerating effect of the ice machine is improved, and the energy consumption is saved.
In one embodiment of the present application, as shown in fig. 1 and 2, the detection module 131 includes a photosensitive element VH1.1 and a photosensitive normally open contact VH1.2.
One end of the photoinduction element VH1.1 is connected to the positive electrode of the voltage conversion module U1, and the other end is connected to the negative electrode of the voltage conversion module U1; the photo-sensing element VH1.1 is used to detect the thickness of the frost layer. The photosensitive normally open contact VH1.2 is connected in series with the coil K1.1 of the intermediate relay. When the photo-sensing element VH1.1 detects that the thickness of the frost layer is greater than or equal to the first preset thickness, the photosensitive normally open contact VH1.2 is closed. When the photo-sensing element VH1.1 detects that the thickness of the frost layer is less than or equal to the second preset thickness, the photosensitive normally open contact VH1.2 resumes the opening.
Specifically, the value of the first preset thickness is within a range of greater than or equal to 3cm and less than or equal to 5cm, and the value of the first preset thickness is within a range of greater than or equal to 0.3cm and less than or equal to 0.7 cm.
Preferably, the first preset thickness has a value of 4cm and the second preset thickness has a value of 0.5cm.
In one embodiment of the present application, as shown in fig. 1 and 2, the detection module 131 includes a photosensitive relay.
In consideration of the case where the photo-sensing element VH1.1 is blocked, there is a case where the heating device 111 is always frosted to burn out the apparatus.
In an embodiment of the present application, as shown in fig. 1 and 2, the ice maker defrosting system 100 for a ship further comprises an overheat protection device 140, wherein the overheat protection device 140 is electrically connected between the air switch QF and the heating device 111, for disconnecting the air switch QF from the heating device 111 at least when the temperature of the heating device 111 exceeds a temperature threshold.
In this embodiment, the overheat protection device 140 is used to protect the heating device 111, and when the temperature is too high, the air switch QF is disconnected from the heating device 111, so that the heating device 111 stops working, and the equipment is prevented from being burnt. Meanwhile, the thermal protection device can also protect the control circuit 130 and the heat exchange circuit 120.
In one embodiment of the present application, as shown in fig. 1 and 2, the overheat protection device 140 includes a first fuse FU1. The input end of the first fuse FU1 is electrically connected to the output end of the air switch QF, and the normally open contact K1.2 of the intermediate relay, the normally closed contact K1.3 of the intermediate relay and the voltage conversion module U1 are respectively electrically connected to the output end of the first fuse FU1. Preferably, the first fuse FU1 is a thermal fuse.
As an alternative to the first overheat protection means 140, the first overheat protection means 140 comprises a temperature relay.
In one embodiment of the present application, as shown in fig. 1 and 2, the marine ice machine defrosting system 100 further comprises a second fuse FU2. The photo-sensing element VH1.1 and the coil K1.1 of the intermediate relay are connected to the voltage conversion module U1 through a second fuse FU2, respectively.
In the present embodiment, the intermediate relay, the detection module 131, and the like are protected by providing the second fuse FU2.
In an embodiment of the present application, as shown in fig. 1 and 2, the heating device 111 includes a plurality of heating wires R1 to R5, and a plurality of heating wires R1 to R5 are sequentially connected in series.
Specifically, the voltage conversion module U1 includes an ac-dc converter.
In an embodiment of the present application, the input of the voltage conversion module U1 is 220V ac, and the output is 24V dc.
The working principle of the application is as follows:
closing the air switch QF, the fan M is operated, and cooling is started, and the light sensing element VH1.1 of the detection module 131 detects the frosting condition. If the thickness of the defrosting required is detected, the photosensitive normally open contact VH1.2 of the detection module 131 is closed, the coil K1.1 of the intermediate relay is electrified, the normally closed contact K1.3 of the intermediate relay is opened, the fan M stops running, the normally open contact K1.2 of the intermediate relay is closed, the heating device 111 starts running, and defrosting starts. After the frost is melted, the light-sensitive element VH1.1 of the detection module 131 detects no frost, the photosensitive normally-open contact VH1.2 of the detection module 131 is restored to an off state, the coil K1.1 of the intermediate relay is powered off, the normally-closed contact is restored, the fan M is operated, the normally-open contact is restored, the heating device 111 is stopped, and the ice bank starts to refrigerate.
Considering the situation that the thickness of the frost layer at each part of the evaporator is possibly inconsistent, the situation that the detection of the thickness of the frost layer at one point can not react with the whole situation is only aimed at, so that the defrosting situation at each part of the evaporator has deviation.
In an embodiment of the present application, the control circuit includes a plurality of groups of detection modules, a plurality of groups of sensing elements of the detection modules are connected between an anode and a cathode of the voltage conversion module, and a plurality of groups of photosensitive normally open contacts of the detection modules are connected in parallel.
In this embodiment, by setting multiple groups of detection modules, multiple groups of sensing elements of the detection modules detect the thickness of frost layers at multiple positions of the evaporator respectively, and as long as the thickness of at least one frost layer is greater than or equal to a first preset thickness, a photosensitive normally open contact associated with the frost layer is closed, a coil of the intermediate relay is electrified, and defrosting begins. When the thickness of each frost layer is smaller than or equal to the second preset thickness, all the photosensitive normally-open contacts are restored to the normally-open state, defrosting is finished, and the ice house starts to refrigerate.
The technical features of the above embodiments may be combined arbitrarily, and the steps of the method are not limited to the execution sequence, so that all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description of the present specification.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.
Claims (10)
1. A marine ice machine defrosting system, comprising:
an air switch, the input end of the air switch is electrically connected to an alternating current power supply;
a main circuit directly or indirectly electrically connected to the output of the air switch;
a heat exchange circuit directly or indirectly electrically connected to the output of the air switch;
a control circuit connected in parallel with the heat exchange circuit;
the main circuit comprises a heating device and a normally open contact of the intermediate relay, and the heating device is connected in series with the normally open contact of the intermediate relay;
the heat exchange circuit comprises a fan and a normally-closed contact of the intermediate relay, and the fan and the normally-closed contact of the intermediate relay are connected in series;
the control circuit includes:
the voltage conversion module is directly or indirectly electrically connected to the output end of the air switch;
a coil of an intermediate relay electrically connected to the voltage conversion module;
and the detection module is electrically connected to the voltage conversion module and is used for controlling the on-off of the coil of the intermediate relay and the voltage conversion module according to the thickness of the detected frost layer.
2. The ice maker defrosting system of claim 1 wherein the detection module comprises:
one end of the light sensing element is connected to the positive electrode of the voltage conversion module, and the other end of the light sensing element is connected to the negative electrode of the voltage conversion module;
and the photosensitive normally-open contact is connected with the coil of the intermediate relay in series.
3. The ice maker defrosting system of claim 2 wherein the detection module comprises a photosensitive relay.
4. The marine ice machine defrosting system of claim 1, further comprising:
and the overheat protection device is electrically connected between the air switch and the heating device and is used for disconnecting the air switch from the heating device at least when the temperature of the heating device exceeds a temperature threshold value.
5. The ice-making machine defrosting system for a ship according to claim 4, wherein said overheat protection means comprises:
the input end of the first fuse is electrically connected to the output end of the air switch, and the normally open contact of the intermediate relay, the normally closed contact of the intermediate relay and the voltage conversion module are respectively electrically connected to the output end of the first fuse.
6. The marine ice machine defrosting system of claim 2, further comprising:
and the light sensing element and the coil of the intermediate relay are respectively connected to the voltage conversion module through the second fuse.
7. The ice maker defrosting system of claim 1 wherein the heating device comprises:
the heating wires are sequentially connected in series.
8. The ice-making machine defrosting system of claim 1 wherein the voltage conversion module comprises an ac-dc converter.
9. The ice-making machine defrosting system for a ship according to claim 7, wherein the voltage conversion module has an input of 220V ac and an output of 24V dc.
10. The ice maker defrosting system of claim 3 wherein the control circuit comprises a plurality of groups of detection modules, the plurality of groups of detection modules having light-sensitive normally open contacts connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321561137.5U CN220338828U (en) | 2023-06-19 | 2023-06-19 | Defrosting system of marine ice machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321561137.5U CN220338828U (en) | 2023-06-19 | 2023-06-19 | Defrosting system of marine ice machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220338828U true CN220338828U (en) | 2024-01-12 |
Family
ID=89458643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321561137.5U Active CN220338828U (en) | 2023-06-19 | 2023-06-19 | Defrosting system of marine ice machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220338828U (en) |
-
2023
- 2023-06-19 CN CN202321561137.5U patent/CN220338828U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7454918B2 (en) | Refrigeration and defrost control system | |
| CN102927786B (en) | Defrosting control method and system of refrigerator and refrigerator | |
| CN106524648B (en) | Refrigerator and control method thereof | |
| CN105135533A (en) | Air conditioner and control method thereof | |
| CN103335469A (en) | Control method of air cooling refrigerator and air cooling refrigerator | |
| US8291718B2 (en) | DSM defrost during high demand | |
| WO2014156312A1 (en) | Power management system and refrigerator | |
| CN220338828U (en) | Defrosting system of marine ice machine | |
| CN207455841U (en) | A kind of handpiece Water Chilling Units air-conditioning system | |
| US3105362A (en) | Refrigerating apparatus with indicating means | |
| CN109237734B (en) | Heating control method for chassis of air conditioner outdoor unit | |
| CA2753806C (en) | Dsm defrost during high demand | |
| CN205026811U (en) | Air -conditioner | |
| CN108351148B (en) | Refrigeration device with flexible compartments | |
| US4241587A (en) | Refrigerating apparatus, especially refrigerator or freezer | |
| CN210070336U (en) | High-voltage electrostatic field food treatment purifying refrigerator | |
| CN205607004U (en) | Change white heating device and white heating device's of having refrigerator | |
| CN205991659U (en) | A kind of novel fridge automatic defrosting circuit | |
| JPH04257680A (en) | Refrigerator | |
| KR100817941B1 (en) | Compensation circuit for low temperature of refrigerator | |
| CN114353423A (en) | Control method for heating wire of electric air door | |
| KR100259921B1 (en) | Bimetal control defrosting circuit | |
| JPH0125986B2 (en) | ||
| CN115523713A (en) | Control method for realizing cold and hot switching of cold and hot cabinet | |
| KR100817940B1 (en) | Compensation circuit for low temperature of refrigerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |