CN109812930A - A kind of two-port valve control assembly, air conditioner and unloading control method - Google Patents

A kind of two-port valve control assembly, air conditioner and unloading control method Download PDF

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Publication number
CN109812930A
CN109812930A CN201811613973.7A CN201811613973A CN109812930A CN 109812930 A CN109812930 A CN 109812930A CN 201811613973 A CN201811613973 A CN 201811613973A CN 109812930 A CN109812930 A CN 109812930A
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CN
China
Prior art keywords
pressure
port valve
pressure switch
control
value
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.)
Pending
Application number
CN201811613973.7A
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Chinese (zh)
Inventor
王金榜
洪华林
梁绍康
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Priority date (The priority date 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 date listed.)
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Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN201811613973.7A priority Critical patent/CN109812930A/en
Publication of CN109812930A publication Critical patent/CN109812930A/en
Pending legal-status Critical Current

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Abstract

The present invention provides a kind of two-port valve control assembly, air conditioner and unloading control method, the two-port valve control assembly includes: two-port valve, pressure switch, it is electrically connected between the two-port valve and the pressure switch, the pressure switch is able to detect the pressure value of predeterminated position and can also control the two-port valve according to the size relation between pressure value and preset value and be switched on or switched off.It can no longer need to use mainboard through the invention, it is directly electrically connected using pressure switch and two-port valve, therefore the cost of the control mode of two-port valve is enabled to substantially reduce, this control mode directly detects pressure value, when pressure reaches a certain value, two-port valve is opened, compared to going it is determined whether to enable by way of effect more accurate temperature and influenced by external environment smaller, keeps the control of two-port valve easier, be more widely applied;In the case where air-conditioning uses two-port valve off-load, the time of unlatching can be accurately controlled, timely off-load guarantees the reliability of air-conditioning.

Description

A kind of two-port valve control assembly, air conditioner and unloading control method
Technical field
The invention belongs to air-conditioning technical fields, and in particular to a kind of two-port valve control assembly, air conditioner and unloading control side Method.
Background technique
Air conditioner is used widely in people's daily life, in air conditioner usually require setting it is big and small, Various two-port valves, to meet the normal mode of operation of air-conditioning, reaches to control being switched on or switched off for air-conditioner hose The use demand of user, will by temperature sensor detection environment temperature or line temperature but be almost in air conditioner at present Be delivered to mainboard after temperature signal judgement again and two-port valve controlled, but such control model and control means at This is relatively high, is affected by the external environment larger, and control accuracy is not high enough, and control more inconvenient and application range compared with It is narrow.And the pressure of air-conditioning exhaust pipe is higher sometimes, needs to carry out off-load to it.
Since the two-port valve in air-conditioning in the prior art is deposited by the control mode that temperature sensor and mainboard combine It the cost is relatively high, is affected by the external environment larger, control accuracy is not high enough, and controls more inconvenient and apply model Relatively narrow, the technical problems such as the pressure of air-conditioning exhaust pipe is higher sometimes are enclosed, therefore researching and designing of the present invention goes out a kind of two-port valve control Component, air conditioner and unloading control method processed.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcome two-port valve in the prior art by temperature sensor and The control mode that mainboard combines haves the defects that the cost is relatively high, to provide a kind of two-port valve control assembly, air conditioner And unloading control method.
The present invention provides a kind of two-port valve control assembly comprising:
Two-port valve, pressure switch are electrically connected between the two-port valve and the pressure switch, and the pressure switch can be examined It surveys the pressure value of predeterminated position and the two-port valve can also be controlled according to the size relation between pressure value and preset value and connect Or it disconnects.
Preferably,
When the pressure value is greater than or equal to the preset value, the pressure switch controls the two-port valve and connects;When When the pressure value is less than the preset value, the pressure switch controls the two-port valve and disconnects.
Preferably,
When the pressure value is less than or equal to the preset value, the pressure switch controls the two-port valve and connects;When When the pressure value is greater than the preset value, the pressure switch controls the two-port valve and disconnects.
Preferably,
The pressure switch is pressure switch open in usual.
Preferably,
The pressure switch includes first terminal and Second terminal, and the first terminal is electrically connected with power supply part, institute It states Second terminal to be electrically connected with one end of the two-port valve, the other end electricity of the other end of the two-port valve and the power supply part Connection, so that the pressure switch and the two-port valve form the electrical circuit of closure.
Preferably,
When the pressure signal meet demand that the pressure switch detects, the internal circuit of the pressure switch is closed, Then the electrical circuit is connected, and the two-port valve is obtained electric and connected;When the pressure signal that the pressure switch detects does not meet need When asking, the internal circuit of the pressure switch is disconnected, then the electrical circuit disconnects, the two-port valve must not electricity and disconnect.
The present invention also provides a kind of air conditioners comprising exhaust pipe, described in any item two-port valve control units before further including Part, and the position of the exhaust pipe is arranged in, to detect pressure at expulsion in the pressure switch,
It further include parallel branch, the parallel branch is arranged in parallel with the exhaust pipe, and is arranged in the parallel branch The two-port valve.
Preferably,
When the pressure switch detects that the pressure at expulsion is greater than or equal to preset pressure, the pressure switch is closed It closes, controls the two-port valve and be powered, the parallel branch is connected, carried out by pressure of the parallel branch to the exhaust pipe Off-load;When the pressure switch detects that the pressure at expulsion is less than preset pressure, the pressure switch is disconnected, described in control Two-port valve power-off, the parallel branch disconnect.
The present invention also provides a kind of unloading control methods of air conditioner, preceding described in any item air conditioners are used, to institute The pressure at expulsion for stating exhaust pipe carries out unloading control.
Preferably,
When the pressure switch detects that the pressure at expulsion is greater than or equal to preset pressure, the pressure switch is closed It closes, controls the two-port valve and be powered, the parallel branch is connected, carried out by pressure of the parallel branch to the exhaust pipe Off-load;When the pressure switch detects that the pressure at expulsion is less than preset pressure, the pressure switch is disconnected, described in control Two-port valve power-off, the parallel branch disconnect.
A kind of two-port valve control assembly, air conditioner and unloading control method provided by the invention have the following beneficial effects:
The present invention passes through the pressure that pressure switch detects predeterminated position by the way that two-port valve and pressure switch to be electrically connected Value, and be switched on or switched off according to the size relation control two-port valve between pressure value and preset value, relative to existing using temperature Degree sensor connect with mainboard signal come for controlling the mode of two-port valve, can no longer need to use mainboard, using pressure switch It is directly electrically connected with two-port valve, therefore the cost of the control mode of two-port valve is enabled to substantially reduce, this control mode is direct Pressure value is detected, two-port valve is opened when pressure reaches a certain value, goes the effect it is determined whether to enable by way of compared to temperature It is more accurate and influenced by external environment smaller, keep the control of two-port valve easier, is more widely applied;It is used in air-conditioning In the case where two-port valve off-load, the time of unlatching can be accurately controlled, timely off-load guarantees the reliability of air-conditioning.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of two-port valve control assembly of the invention;
Fig. 2 is the unloading control flow diagram of the air conditioner with two-port valve control assembly of the invention.
Specific embodiment
As shown in Figs. 1-2, the present invention provides a kind of two-port valve control assembly comprising:
Two-port valve, pressure switch are electrically connected between the two-port valve and the pressure switch, and the pressure switch can be examined It surveys the pressure value of predeterminated position and the two-port valve can also be controlled according to the size relation between pressure value and preset value and connect Or it disconnects.
The present invention passes through the pressure that pressure switch detects predeterminated position by the way that two-port valve and pressure switch to be electrically connected Value, and be switched on or switched off according to the size relation control two-port valve between pressure value and preset value, relative to existing using temperature Degree sensor connect with mainboard signal come for controlling the mode of two-port valve, can no longer need to use mainboard, using pressure switch It is directly electrically connected with two-port valve, therefore the cost of the control mode of two-port valve is enabled to substantially reduce, this control mode is direct Pressure value is detected, two-port valve is opened when pressure reaches a certain value, goes the effect it is determined whether to enable by way of compared to temperature It is more accurate and influenced by external environment smaller, keep the control of two-port valve easier, is more widely applied.
Preferably,
When the pressure value is greater than or equal to the preset value, the pressure switch controls the two-port valve and connects;When When the pressure value is less than the preset value, the pressure switch controls the two-port valve and disconnects.This is two-port valve of the invention One of preferred constructive form of control assembly, i.e. pressure value be greater than preset value when, pressure switch control two-port valve connect, pressure Force value be less than preset value when, two-port valve open.
Preferably,
When the pressure value is less than or equal to the preset value, the pressure switch controls the two-port valve and connects;When When the pressure value is greater than the preset value, the pressure switch controls the two-port valve and disconnects.This is two-port valve of the invention Another preferred constructive form of control assembly, i.e. pressure value be less than preset value when, pressure switch control two-port valve connect, pressure Value be greater than preset value when, two-port valve open.
Preferably,
The pressure switch is pressure switch open in usual.This is the preferred constructive form of pressure switch of the invention.
Preferably,
The pressure switch includes first terminal and Second terminal, and the first terminal is electrically connected with power supply part, institute It states Second terminal to be electrically connected with one end of the two-port valve, the other end electricity of the other end of the two-port valve and the power supply part Connection, so that the pressure switch and the two-port valve form the electrical circuit of closure.
This is the further preferred structure type of pressure switch of the invention, as shown in Figure 1, power supply part here is preferred It is electrical appliance kit, external circuit again powers to electrical appliance kit, and two-port valve and pressure switch is enabled to form closure with this configuration Electrical circuit so that pressure switch the first predeterminated position Shi get electricity make the electrical circuit closure, so that two-port valve obtain it is electric It connects;Pressure switch disconnects the electrical circuit, so that two-port valve power-off disconnects in the second predeterminated position Shi get electricity.
Preferably,
When the pressure signal meet demand that the pressure switch detects, the internal circuit of the pressure switch is closed, Then the electrical circuit is connected, and the two-port valve is obtained electric and connected;When the pressure signal that the pressure switch detects does not meet need When asking, the internal circuit of the pressure switch is disconnected, then the electrical circuit disconnects, the two-port valve must not electricity and disconnect.This is The further preferred judgement form of pressure switch of the invention, (this when enabling to pressure signal meet demand with this configuration In preferably detection pressure be greater than or equal to preset pressure) two-port valve and pressure switch form the electrical circuit (pressure switch of closure The electrical circuit of itself is first closed) and then two-port valve is connected, when pressure signal is unsatisfactory for demand (it is small that pressure is preferably detected here In preset pressure) two-port valve and pressure switch form the electrical circuit (electrical circuit of pressure switch itself first disconnects) disconnected, in turn Disconnect two-port valve.
The present invention also provides a kind of air conditioners comprising exhaust pipe further includes two-port valve control unit above-mentioned, and described The position of the exhaust pipe is arranged in, to detect pressure at expulsion in pressure switch,
It further include parallel branch, the parallel branch is arranged in parallel with the exhaust pipe, and is arranged in the parallel branch The two-port valve.
The present invention passes through the pressure that pressure switch detects predeterminated position by the way that two-port valve and pressure switch to be electrically connected Value, and be switched on or switched off according to the size relation control two-port valve between pressure value and preset value, relative to existing using temperature Degree sensor connect with mainboard signal come for controlling the mode of two-port valve, can no longer need to use mainboard, using pressure switch It is just enough with two-port valve electrical connection, therefore the cost of the control mode of two-port valve is enabled to substantially reduce, this control mode is straight Detection pressure value is connect, two-port valve is opened when pressure reaches a certain value, goes it is determined whether to enable by way of to imitate compared to temperature Fruit is more accurate and is influenced by external environment smaller, keeps the control of two-port valve easier, is more widely applied;
In the case where air-conditioning uses two-port valve off-load, by the way that the parallel branch in parallel with exhaust pipe is arranged and by pressure The position of exhaust pipe is arranged in switch and two-port valve is arranged in parallel branch, can detect exhaust by pressure switch Pressure, and the control that two-port valve is opened and closed according to the size of pressure at expulsion carry out parallel branch to connect on and off to reach The control opened is realized and carries out off-load to exhaust, and can accurately control the time of unlatching, and timely off-load guarantees the reliability of air-conditioning.
In the case where air-conditioning needs off-load, off-load is carried out to it using two-port valve, can accurately control the time of unlatching, Timely off-load guarantees the reliability of air-conditioning.
Preferably,
When the pressure switch detects that the pressure at expulsion is greater than or equal to preset pressure, the pressure switch is closed It closes, controls the two-port valve and be powered, the parallel branch is connected, carried out by pressure of the parallel branch to the exhaust pipe Off-load;When the pressure switch detects that the pressure at expulsion is less than preset pressure, the pressure switch is disconnected, described in control Two-port valve power-off, the parallel branch disconnect.
This is that size relation institute is right between the pressure at expulsion and preset pressure of the pressure switch detection of air conditioner of the invention The preferred control means answered illustrate to arrange when the pressure switch detects that the pressure at expulsion is greater than or equal to preset pressure Atmospheric pressure is excessive, needs to carry out off-load to exhaust pipe pressure at this time, then passes through pressure switch control two-port valve energization and connects, and Parallel branch is connected, the effect to realize the excellent off-load to exhaust;When the pressure switch detects the pressure at expulsion When less than preset pressure, illustrate pressure at expulsion be in normal range (NR), praise at this time do not need to exhaust pipe pressure carry out off-load, then It does not control two-port valve by pressure switch to be powered connection (since pressure switch is normally opened therefore is failure to actuate at this time), and will be in parallel Branch disconnection, not off-load.
It imposes a condition as follows:
1, pressure switch is connect on exhaust pipe
2, two-port valve is in parallel with exhaust pipe, i.e., two-port valve is connected among air intake duct and cold outlet tube, specific visible attached drawing;
3, off-load is mainly the pressure reduction made on exhaust pipe, that is to say the pressure for reducing machine system.
Embodiment:
Pressure switch is a kind of pressure switch open in usual, and there are two terminals, one to terminate the firewire of air conditioner for pressure switch, Other end connects one end of two-port valve, and the zero curve of the other end connection air conditioner of two-port valve forms a disconnection in this way Circuit (only disconnects at pressure switch), and when operation of air conditioner, pressure switch can continue detection pressure, when the pressure that it is detected Value reaches after a certain particular value (this particular value requires difference according to the difference of pressure switch), and internal circuit can be closed, and be closed Pressure switch after conjunction is powered, and two-port valve obtains electric at this time, obtain it is electric after two-port valve open, refrigerant circulation.Due to two-port valve and row Tracheae is in parallel, therefore the pressure on exhaust pipe can reduce, so that system obtains off-load.The pressure reduction of air conditioner, system after off-load Be able to continue to run (if pressure value is higher at this time, it will affect the reliability of complete machine, it, can shadow if directly protection is shut down Ring the comfort of air-conditioning).
The present invention also provides a kind of unloading control methods of air conditioner, air conditioner above-mentioned are used, to the exhaust pipe Pressure at expulsion carry out unloading control.
The present invention passes through the pressure that pressure switch detects predeterminated position by the way that two-port valve and pressure switch to be electrically connected Value, and be switched on or switched off according to the size relation control two-port valve between pressure value and preset value, relative to existing using temperature Degree sensor connect with mainboard signal come for controlling the mode of two-port valve, can no longer need to use mainboard, using pressure switch It is just enough with two-port valve electrical connection, therefore the cost of the control mode of two-port valve is enabled to substantially reduce, this control mode is straight Detection pressure value is connect, two-port valve is opened when pressure reaches a certain value, goes it is determined whether to enable by way of to imitate compared to temperature Fruit is more accurate and is influenced by external environment smaller, keeps the control of two-port valve easier, is more widely applied;
In the case where air-conditioning uses two-port valve off-load, by the way that the parallel branch in parallel with exhaust pipe is arranged and by pressure The position of exhaust pipe is arranged in switch and two-port valve is arranged in parallel branch, can detect exhaust by pressure switch Pressure, and the control that two-port valve is opened and closed according to the size of pressure at expulsion carry out parallel branch to connect on and off to reach The control opened is realized and carries out off-load to exhaust, and can accurately control the time of unlatching, and timely off-load guarantees the reliability of air-conditioning.
Preferably,
When the pressure switch detects that the pressure at expulsion is greater than or equal to preset pressure, the pressure switch is closed It closes, controls the two-port valve and be powered, the parallel branch is connected, carried out by pressure of the parallel branch to the exhaust pipe Off-load;When the pressure switch detects that the pressure at expulsion is less than preset pressure, the pressure switch is disconnected, described in control Two-port valve power-off, the parallel branch disconnect.
This is that size relation institute is right between the pressure at expulsion and preset pressure of the pressure switch detection of air conditioner of the invention The preferred control means answered illustrate to arrange when the pressure switch detects that the pressure at expulsion is greater than or equal to preset pressure Atmospheric pressure is excessive, needs to carry out off-load to exhaust pipe pressure at this time, then passes through pressure switch control two-port valve energization and connects, and Parallel branch is connected, the effect to realize the excellent off-load to exhaust;When the pressure switch detects the pressure at expulsion When less than preset pressure, illustrate pressure at expulsion be in normal range (NR), praise at this time do not need to exhaust pipe pressure carry out off-load, then It does not control two-port valve by pressure switch to be powered connection (since pressure switch is normally opened therefore is failure to actuate at this time), and will be in parallel Branch disconnection, not off-load.
Specific embodiments of the present invention are as follows:
1. operation of air conditioner, two-port valve is in parallel with exhaust pipe.
2. pressure switch detects pressure value;
3. pressure value reaches a certain particular value;
4. pressure switch is closed, closed circuit is formed;
5. two-port valve obtains electric, unlatching;
6. a part of refrigerant is diverted to two-port valve from exhaust pipe;
7. the pressure reduction on exhaust pipe reaches off-load purpose, the reliability of air conditioner is improved;
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.With It is only the preferred embodiment of the present invention described in upper, it is noted that for those skilled in the art, not Under the premise of being detached from the technology of the present invention principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as this The protection scope of invention.

Claims (10)

1. a kind of two-port valve control assembly, it is characterised in that: include:
Two-port valve, pressure switch are electrically connected between the two-port valve and the pressure switch, and the pressure switch is able to detect pre- If the pressure value of position simultaneously can also control the two-port valve and connect on-off according to the size relation between pressure value and preset value It opens.
2. two-port valve control assembly according to claim 1, it is characterised in that:
When the pressure value is greater than the preset value, the pressure switch controls the two-port valve and connects;When the pressure value When less than the preset value, the pressure switch controls the two-port valve and disconnects.
3. two-port valve control assembly according to claim 1, it is characterised in that:
When the pressure value is less than the preset value, the pressure switch controls the two-port valve and connects;When the pressure value When greater than the preset value, the pressure switch controls the two-port valve and disconnects.
4. two-port valve control assembly according to any one of claim 1-3, it is characterised in that:
The pressure switch is pressure switch open in usual.
5. two-port valve control assembly described in any one of -4 according to claim 1, it is characterised in that:
The pressure switch includes first terminal and Second terminal, and the first terminal is electrically connected with power supply part, described Two-terminal is electrically connected with one end of the two-port valve, and the other end of the two-port valve and the other end of the power supply part are electrically connected It connects, so that the pressure switch and the two-port valve form the electrical circuit of closure.
6. two-port valve control assembly according to claim 5, it is characterised in that:
When the pressure signal meet demand that the pressure switch detects, the internal circuit of the pressure switch is closed, then institute Electrical circuit connection is stated, the two-port valve is obtained electric and connected;When the pressure signal unmet demand that the pressure switch detects, The internal circuit of the pressure switch disconnects, then the electrical circuit disconnects, the two-port valve must not electricity and disconnect.
7. a kind of air conditioner, it is characterised in that:
It further include two-port valve control unit of any of claims 1-5 including exhaust pipe, and the pressure switch is set It sets in the position of the exhaust pipe, to detect pressure at expulsion,
It further include parallel branch, the parallel branch is arranged in parallel with the exhaust pipe, and in the parallel branch described in setting Two-port valve.
8. air conditioner according to claim 7, it is characterised in that:
When the pressure switch detects that the pressure at expulsion is greater than or equal to preset pressure, the pressure switch closure, control It makes the two-port valve to be powered, the parallel branch is connected, carries out off-load by pressure of the parallel branch to the exhaust pipe; When the pressure switch detects that the pressure at expulsion is less than preset pressure, the pressure switch is disconnected, and controls the two-way Valve power-off, the parallel branch disconnect.
9. a kind of unloading control method of air conditioner, it is characterised in that:
Using air conditioner described in any one of claim 7-8, unloading control is carried out to the pressure at expulsion of the exhaust pipe.
10. unloading control method according to claim 9, it is characterised in that:
When the pressure switch detects that the pressure at expulsion is greater than or equal to preset pressure, the pressure switch closure, control It makes the two-port valve to be powered, the parallel branch is connected, carries out off-load by pressure of the parallel branch to the exhaust pipe; When the pressure switch detects that the pressure at expulsion is less than preset pressure, the pressure switch is disconnected, and controls the two-way Valve power-off, the parallel branch disconnect.
CN201811613973.7A 2018-12-27 2018-12-27 A kind of two-port valve control assembly, air conditioner and unloading control method Pending CN109812930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811613973.7A CN109812930A (en) 2018-12-27 2018-12-27 A kind of two-port valve control assembly, air conditioner and unloading control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811613973.7A CN109812930A (en) 2018-12-27 2018-12-27 A kind of two-port valve control assembly, air conditioner and unloading control method

Publications (1)

Publication Number Publication Date
CN109812930A true CN109812930A (en) 2019-05-28

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203190533U (en) * 2012-12-04 2013-09-11 中国人民解放军理工大学国防工程学院 Underground engineering energy-efficient dehumidifier
KR200471061Y1 (en) * 2013-10-01 2014-02-11 고지연 Refrigerating system
CN204006307U (en) * 2014-04-21 2014-12-10 广东美的集团芜湖制冷设备有限公司 The air-conditioner with unloading function
CN106322860A (en) * 2016-09-23 2017-01-11 海信科龙电器股份有限公司 Unloading valve component for air conditioner and air conditioner
CN108286836A (en) * 2018-01-16 2018-07-17 海信容声(广东)冷柜有限公司 A kind of mixed working fluid cryogenic refrigerating system and refrigerating device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203190533U (en) * 2012-12-04 2013-09-11 中国人民解放军理工大学国防工程学院 Underground engineering energy-efficient dehumidifier
KR200471061Y1 (en) * 2013-10-01 2014-02-11 고지연 Refrigerating system
CN204006307U (en) * 2014-04-21 2014-12-10 广东美的集团芜湖制冷设备有限公司 The air-conditioner with unloading function
CN106322860A (en) * 2016-09-23 2017-01-11 海信科龙电器股份有限公司 Unloading valve component for air conditioner and air conditioner
CN108286836A (en) * 2018-01-16 2018-07-17 海信容声(广东)冷柜有限公司 A kind of mixed working fluid cryogenic refrigerating system and refrigerating device

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