CN201134392Y - Switch device - Google Patents
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- Publication number
- CN201134392Y CN201134392Y CNU2007201909816U CN200720190981U CN201134392Y CN 201134392 Y CN201134392 Y CN 201134392Y CN U2007201909816 U CNU2007201909816 U CN U2007201909816U CN 200720190981 U CN200720190981 U CN 200720190981U CN 201134392 Y CN201134392 Y CN 201134392Y
- Authority
- CN
- China
- Prior art keywords
- contact
- chamber
- push rod
- compressor
- circulation chamber
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a switch device, which comprises a communicating chamber and a contact chamber. The communicating chamber is provided with a water inlet passage, a water outlet passage and a floating ball, wherein a partition board is arranged between the water inlet passage and the water outlet passage and provided with a through hole, and the floating ball is disposed rightly above the partition board through hole. The contact chamber is provided with an electrical fixed contact, an electronic movable contact and a sealing rubber ring, wherein the electrical fixed contact is fixed on the contact chamber, the lower portion of the movable contact is connected with the floating ball via a push rod, the sealing rubber ring is coated on the push rod and separates the communicating chamber from the contact chamber when the push rod moves upwards. The switch device can restrict and regulate refrigeration operation process, achieve the purpose that a compressor can not start when control power supply of the compressor is power off because water supply does not reach the mark, thereby avoiding weaknesses caused by forgetting water supply to start the compressor.
Description
Technical field
The utility model relates to a kind of switching device, particularly a kind ofly can not produce switching device under the hyperpressure state at refrigerant compressor.
Background technology
According to the requirement of refrigerating operation rules, refrigerating system is at first supplied with condenser and head cooling water before starting compressor, could normally start compressor; Otherwise will cause the corrupted and the high pressure accident of compressor.
Existing refrigeration machine, mainly be to finish the on-off electric control by the pressure controller of control desk, promptly break down (fault, electrical fault, feed pipe fault or drive of motor fault etc.) can not the normal supply cooling water time because of water supply in refrigeration, when producing high temperature, body produces high pressure with condenser, until the upper limit of overpressure controller, force the pressure controller action to cut off the compressor control power supply; If dual pressure controller is set up wrong or corrupted, the high pressure gas that straight line rises backs down safety valve the ejector refrigeration agent; Cause unnecessary economic loss or security incident; Even if dual pressure controller is intact, also must cause the running of compressor high temperature and high pressure, the damaged condition of causing for compressor part and structure thereof is difficult to the appraisal; Forget the startup compressor suddenly that supplies water before particularly starting compressor, accident rate is higher.
The utility model content
Technical problem to be solved in the utility model provides a kind of switching device, and this device is connected in the water pipe of refrigeration machine, and whether the connection of direct control circuit by hydraulic pressure.
For solving the problems of the technologies described above, technical scheme provided by the utility model is: a kind of switching device, this device include two chambers: circulation chamber with contact the chamber; Be provided with intake tunnel and exhalant canal in the described circulation chamber, be provided with horizontal baffle between intake tunnel and exhalant canal, this dividing plate is provided with through hole; Also be provided with a ball float in the described circulation chamber, this ball float be positioned at bulkhead through-hole directly over; Indoor electric fixed contact and the electronic contact of being provided with of described contact, described electric fixed contact are fixed on the contact chamber; Below, described electronic contact is connected with ball float by push rod; Be provided with O-ring seal in the described circulation chamber, the sealing cushion rubber is set on the push rod, and the sealing cushion rubber is isolated circulation chamber when push rod moves up with the chamber of contact.
Described dividing plate is provided with the stopping means that the restriction ball float can only move up and down.
Be provided with flow-stopping plate in the described circulation chamber, this flow-stopping plate is set on the push rod.
The indoor spring that is provided with of described contact, this spring housing is located on the push rod, and an end is fixedlyed connected with push rod, and the other end is fixed on the contact chamber.
The advantage that the utlity model has: 1, can limit standard refrigerating operation program, it is not up to standard to accomplish to supply water, and is just transporting identification light and is not working, and compressor control power supply no power can not start compressor; It is up to standard to supply water, and is just transporting that identification light is bright can normally to be started, and has therefore avoided because of forgetting the drawback of the startup compressor that supplies water.2, avoided operating refrigerating system to hinder the caused adverse consequences of cutting off the water and causing for some reason; 3, cost is low, technology is simple, and is safe and reliable; 4, practicality is wide, can be used for occasion and equipment that all are cut off the water and need cut off the electricity supply thereupon, is applicable to that particularly various is the refrigerating system of cooling agent with water.
Description of drawings:
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
Embodiment:
A kind of switching device as shown in Figure 1, this device include two chambers: circulation chamber 1 with contact chamber 2; Be provided with intake tunnel 11 and exhalant canal 12 in the described circulation chamber 1, between intake tunnel 11 and exhalant canal 12, be provided with dividing plate 17, also be provided with through hole 171 on this dividing plate 17; Also be provided with a ball float 13 in the described circulation chamber 1, this ball float 13 be positioned at bulkhead through-hole 171 directly over; Dividing plate 17 is provided with the ball float guardrail 15 that restriction ball float 13 can only move up and down, and is provided with electric fixed contact 23 and electronic contact 22 in the described contact chamber 2, and described electric fixed contact 23 is fixed on the contact chamber 2; 22 belows, described electronic contact are connected with ball float 13 by push rod 3; Be provided with O-ring seal 16 in the described circulation chamber 1, sealing cushion rubber 16 is set on the push rod 3, sealing cushion rubber 16 when push rod 3 moves up with circulation chamber 1 with contact chamber 2 and isolate.Be provided with flow-stopping plate 14 in the circulation chamber 1, this flow-stopping plate 14 is set on the push rod 3.Contact is provided with spring 21 in the chamber 2, and this spring 21 is set on the push rod 3, and an end is fixedlyed connected with push rod 3, and the other end is fixed on the contact chamber 2, is convenient to circulation chamber 1 interior ball float 13 and can moves down and block through hole 171.
This device is connected in refrigeration machine head return pipe or the condenser return pipe, start the refrigeration procedure operation: open water system, flow through the current of this device by circulation chamber 1, electric fixed contact 23 and electronic contact 22 on the device are pushed into closure state, make and be connected on this and install ac contactor coil (compressor start power supply) energising on the electric fixed contact 23, compressor is in treats starting state, can press start button at any time and finish initiating task.At this, the effect of this device is to forget and supply water or supply water when undesired that this device can't be finished the action of energized, causes compressor to start, and plays protective effect effectively if the operator starts compressor.
The compressor that is running well; when if appearance is midway supplied water unusually or is cut off the water supply; the current that this device will be removed by supplying water back; device inner float ball 13 is moved down; cut off compressor start contact coil power immediately; compressor quits work, thereby has avoided because of insufficient water or all adverse consequencess of cutting off the water and being caused.
The press water that water pump feeds enters this device water inlet 11, and through bulkhead through-hole 171 jack-up ball floats 13, ball float 13 rises by push rod 3, connects electric fixed contact 23 and electronic contact 22; The compressor control coil electricity that links to each other with electric fixed contact 23.
When water pump current cutout or pressure of supply water are not up to standard, supply water and reflux, instead flow through water inlet 11, ball float 13 falls on the bulkhead through-hole 171, moves down at spring 21 effect lower push rods 3 simultaneously, and electronic contact 22 disconnects with electric fixed contact 23, make the compressor control coil blackout, compressor stops operating.
Can be at delivery port 11 and water inlet 12 places by ring flange, the outer water tube that is threaded, adopting can increase the screw thread nut and be used to be fastenedly connected when being threaded.
Claims (4)
1, a kind of switching device is characterized in that: this device includes two chambers: circulation chamber with contact the chamber; Be provided with intake tunnel and exhalant canal in the described circulation chamber, be provided with horizontal baffle between intake tunnel and exhalant canal, this dividing plate is provided with through hole; Also be provided with a ball float in the described circulation chamber, this ball float be positioned at bulkhead through-hole directly over; Indoor electric fixed contact and the electronic contact of being provided with of described contact, described electric fixed contact are fixed on the contact chamber; Below, described electronic contact is connected with ball float by push rod; Be provided with O-ring seal in the described circulation chamber, the sealing cushion rubber is set on the push rod, and the sealing cushion rubber carries out water with the circulation chamber and the chamber of contact when push rod moves up isolates.
2, switching device according to claim 1 is characterized in that: described dividing plate is provided with the stopping means that the restriction ball float can only move up and down.
3, switching device according to claim 1 and 2 is characterized in that: be provided with flow-stopping plate in the described circulation chamber, this flow-stopping plate is set on the push rod.
4, switching device according to claim 1 is characterized in that: the indoor spring that is provided with of described contact, and this spring housing is located on the push rod, and an end is fixedlyed connected with push rod, and the other end is fixed on the contact chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201909816U CN201134392Y (en) | 2007-12-28 | 2007-12-28 | Switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201909816U CN201134392Y (en) | 2007-12-28 | 2007-12-28 | Switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201134392Y true CN201134392Y (en) | 2008-10-15 |
Family
ID=40062659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201909816U Expired - Fee Related CN201134392Y (en) | 2007-12-28 | 2007-12-28 | Switch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201134392Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108176303A (en) * | 2017-12-28 | 2018-06-19 | 卢勇军 | A kind of waste water circulation treating device recycled based on trade effluent |
| CN109623141A (en) * | 2019-01-28 | 2019-04-16 | 深圳市安思科电子科技有限公司 | A kind of laser engraving equipment with defencive function |
-
2007
- 2007-12-28 CN CNU2007201909816U patent/CN201134392Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108176303A (en) * | 2017-12-28 | 2018-06-19 | 卢勇军 | A kind of waste water circulation treating device recycled based on trade effluent |
| CN108176303B (en) * | 2017-12-28 | 2020-09-08 | 兆德（南通）电子科技有限公司 | Waste water circulation processing apparatus based on industrial sewage recycles |
| CN109623141A (en) * | 2019-01-28 | 2019-04-16 | 深圳市安思科电子科技有限公司 | A kind of laser engraving equipment with defencive function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20111228 |