CN204535185U - Heat recovery air conditioner unit - Google Patents
Heat recovery air conditioner unit Download PDFInfo
- Publication number
- CN204535185U CN204535185U CN201520051780.2U CN201520051780U CN204535185U CN 204535185 U CN204535185 U CN 204535185U CN 201520051780 U CN201520051780 U CN 201520051780U CN 204535185 U CN204535185 U CN 204535185U
- Authority
- CN
- China
- Prior art keywords
- mouth
- compressor
- reservoir
- way change
- valve
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
When the evaporating temperature of environment temperature lower than vaporizer side cold-producing medium, the heat recovery air conditioner unit that unit recuperation of heat can normally run.The exhaust outlet being included in compressor is serially connected with two four-way change-over valves successively, wherein, the D1 mouth of the first four-way change-over valve is communicated with the exhaust outlet of compressor, its E1 mouth is connected with the D2 mouth of the second four-way change-over valve, its S1 mouth is connected with compressor air suction mouth by the first check valve pointing to compressor air suction mouth, and its C1 mouth is connected with the entrance of described heat regenerator; The E2 mouth of described second four-way change-over valve is connected with the second port of described evaporimeter, and its S2 mouth is connected with the air entry of compressor, and its C2 mouth is connected with the import of described condenser.First check valve ensure that when environment temperature is lower because of its one-way flow performance, and the cold-producing medium of systemic circulation is not to air heat exchanger (i.e. condenser) migration, and unit can carry out recuperation of heat again while running refrigerating.
Description
Technical field
The utility model relates to air-conditioning technical field, particularly a kind of heat recovery air conditioner unit.
Background technology
At present, total heat recovery unit usually has refrigeration, heats, recuperation of heat and hot water four kinds of operational modes, but when the temperature of the surroundings is low, because the temperature of air-side heat exchanger is also lower than the temperature of cold-producing medium in suction side, therefore the cold-producing medium at this place is very easily moved to air-side heat exchanger by the four-way change-over valve of conducting, causes air-conditioner set can not carry out recuperation of heat for a long time while running refrigerating when environment temperature is lower.
In prior art, exhaust outlet of compressor place in total heat recovery unit connects a four-way change-over valve, usually, the D interface of this four-way change-over valve is connected to the exhaust outlet of compressor, C interface is connected to the entrance of heat regenerator, S interface and evaporator outlet are with the air entry being connected to compressor, and E interface is connected to the gas end of condenser.
When running heat recovery mode, the D of this four-way change-over valve, C-channel conducting, S, E channel conductive, now, entering heat regenerator by exhaust outlet of compressor pressure high temperature hot gas out by this D, C-channel, being back in compressor by the air entry of evaporator outlet by compressor again through turning.
During total heat recovery, air-side heat exchanger is in idle state, and its heat exchanger as bypass communicates with evaporimeter, and namely it does not participate in the cycle heat exchange of system directly.When outdoor environment temperature is lower, during evaporating temperature especially lower than vaporizer side cold-producing medium, so will be moved to the place that pressure low temperature is low by evaporator outlet refrigerant gas out, namely the cold-producing medium in the circulatory system can by described S, E passage flows to air-side heat exchanger gradually and here hoards, its result must cause the refrigerant flow in the circulatory system more and more less, final system can have to because circulating refrigerant causes compressor to be in unsafe condition not protect shutdown, there is harm in the life-span of longtime running to compressor, the stability of also influential system operation simultaneously.
In sum, how to realize heat recovery function when environment temperature is lower, become the technical problem that those skilled in the art are urgently to be resolved hurrily.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of when the evaporating temperature of environment temperature lower than vaporizer side cold-producing medium, the heat recovery air conditioner unit that unit recuperation of heat can normally run.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
Heat recovery air conditioner unit of the present utility model, comprise compressor, evaporimeter, condenser, heat regenerator and reservoir, two four-way change-over valves are serially connected with successively at the exhaust outlet of compressor, wherein, the D1 mouth of the first four-way change-over valve is communicated with the exhaust outlet of compressor, its E1 mouth is connected with the D2 mouth of the second four-way change-over valve, and its S1 mouth is connected with compressor air suction mouth by the first check valve pointing to compressor air suction mouth, and its C1 mouth is connected with the entrance of described heat regenerator; The E2 mouth of described second four-way change-over valve is connected with the second port of described evaporimeter, and its S2 mouth is connected with the air entry of compressor, and its C2 mouth is connected with the import of described condenser; The outlet of described heat regenerator is connected to the first port of described evaporimeter by described reservoir, the first electric expansion valve; The outlet of described condenser is connected to the first port of described evaporimeter by reservoir, the first electric expansion valve.
The second check valve pointing to reservoir is provided with between the outlet and the entrance of reservoir of condenser; The 3rd check valve pointing to reservoir is provided with between the outlet and the entrance of reservoir of heat regenerator.
The 4th check valve pointing to reservoir is provided with between described evaporimeter first port and described reservoir entrance; The second electric expansion valve is provided with between the outlet and the outlet of condenser of reservoir.
The 4th check valve pointing to reservoir is provided with between described evaporimeter first port and described reservoir entrance; The 3rd electric expansion valve is provided with between the outlet and the outlet of heat regenerator of reservoir.
Described first four-way change-over valve and the second four-way change-over valve are pattern and switch cross valve.
Compared with prior art, the utility model connecting line is installed the first check valve pointing to this air entry between the first four-way change-over valve and the air entry of compressor.The one-way flow performance of this check valve is guaranteed when environment temperature is lower, and the cold-producing medium of systemic circulation is not to air heat exchanger (i.e. condenser) migration, and unit can carry out recuperation of heat again while running refrigerating.It can effectively be avoided when environment temperature is lower, and unit long-term safety can not carry out the defect of recuperation of heat operation.
Accompanying drawing explanation
Fig. 1 is.The application structure schematic diagram of a kind of check valve on heat recovery air conditioner unit that Fig. 1 provides for the utility model embodiment;
Reference numeral is as follows:
Compressor 1, condenser 2, evaporimeter 3, first port 31, second port 32, heat regenerator 4, reservoir 5, first four-way change-over valve 61, second four-way change-over valve 62, first check valve 71, second check valve 72, the 3rd check valve 73, the 4th check valve 74, first electric expansion valve 81, second electric expansion valve 82, the 3rd electric expansion valve 83.
Detailed description of the invention
As shown in Figure 1, heat recovery air conditioner unit of the present utility model, comprise compressor 1, evaporimeter 3 (preferred dry evaporimeter 3), condenser 2 (preferred air cooled condenser 2), heat regenerator 4 and reservoir 5, its concrete syndeton is as follows:
(this four-way change-over valve can be conventional cross valve to be serially connected with two four-way change-over valves successively at the exhaust outlet of compressor 1, the utility model preference pattern switches cross valve, the concrete structure that this pattern switches cross valve is documented in another utility model patent of the applicant, the patent No. is: 201220452437.5, and name is called: mode-changeover device.This four-way change-over valve can the pressure reduction between compressor 1 high-pressure side and low-pressure side when reaching predetermined value, selective automatic switchover conducting is carried out) between four ports, wherein, the D1 mouth of the first four-way change-over valve 61 is communicated with the exhaust outlet of compressor 1, its E1 mouth is connected with the D2 mouth of the second four-way change-over valve 62, its S1 mouth is connected with compressor 1 air entry by the first check valve 71 pointing to compressor 1 air entry, and its C1 mouth is connected with the entrance of described heat regenerator 4; The E2 mouth of described second four-way change-over valve 62 is connected with the second port 32 of described evaporimeter 3, and its S2 mouth is connected with the air entry of compressor 1, and its C2 mouth is connected with the import of described condenser 2; The outlet of described heat regenerator 4 is connected to the first port 31 of described evaporimeter 3 by described reservoir 5, first electric expansion valve 81; The outlet of described condenser 2 is connected to the first port 31 of described evaporimeter 3 by reservoir 5, first electric expansion valve 81.
When being in heat recovery mode, D1, C1 channel conductive of the first four-way change-over valve 61, E2, S2 channel conductive of the second four-way change-over valve 62.
As shown in Figure 1, cold-producing medium is by E2, S2 passage → compressor 1 of compressor 1 → the first four-way change-over valve 61D1, C1 passage → heat regenerator the 4 → three check valve 73 → reservoir 5 → the first electric expansion valve 81 → evaporimeter 3 → the second four-way change-over valve 62.
When the environment temperature of condenser 2 that is residing for air-side heat exchanger is lower; during gas temperature especially lower than compressor 1 air entry cold-producing medium; cold-producing medium can move to low-temp low-pressure side; namely the cold-producing medium of compressor 1 suction side progressively can flow in condenser 2 and store; and do not participate in kind of refrigeration cycle and go; the refrigerant flow of systemic circulation will be caused so fewer and feweri; finally cause refrigerating capacity to be deteriorated, serious time compressor 1 more need protection to shut down, be unfavorable for the long-term safety Effec-tive Function of unit.
The first check valve 71 in said structure is in the effect of unit:
During refrigeration mode, cold-producing medium is by E2, S2 passage → compressor 1 of D2, C2 passage → condenser 2 → the second check valve 72 → reservoir 5 → the first electric expansion valve 81 → evaporimeter 3 → the second four-way change-over valve 62 of D1, E1 passage → the second four-way change-over valve 62 of compressor 1 → the first four-way change-over valve 61.
During this state, heat regenerator 4 is the bypass-side heat exchangers not participating in circulating, the cold-producing medium that the inside stores flows to the air entry of compressor 1 by this first check valve 71, as long as so the pressure of cold-producing medium is higher than the S1 place pressure of the first four-way change-over valve 61 inside heat regenerator 4, that cold-producing medium just can flow to compressor 1 air entry through the first check valve 71;
When for hot-water mode, evaporimeter 3 is the bypass-side heat exchangers not participating in circulating, the cold-producing medium that the inside stores flows to the air entry of compressor 1 by this first check valve 71, as long as so the pressure of cold-producing medium is higher than the S1 place pressure of the first four-way change-over valve 61 inside evaporimeter 3, that cold-producing medium just can flow to the air entry of compressor 1 through the first check valve 71.
In addition when environment temperature (environment temperature residing for condenser 2 side) is lower, this first check valve 71 can prevent the cold-producing medium of compressor 1 suction side from moving to air-side heat exchanger (i.e. condenser 2) back through S1, E1 passage of the first four-way change-over valve 61.
Further improvement of the utility model is between the outlet and the entrance of reservoir 5 of condenser 2, be provided with the second check valve 72 pointing to reservoir 5; The 3rd check valve 73 pointing to reservoir 5 is provided with between the outlet and the entrance of reservoir 5 of heat regenerator 4.Its effect is: according to the one-way flow performance of check valve; guarantee unit freeze heat or hot water or recuperation of heat different mode run time; just directly flow to low-side heat exchanger without electric expansion valve throttling after cold-producing medium can not condense from high-side heat exchanger, guarantee the kind of refrigeration cycle that different mode runtime system can carry out normally " compression-exhaust condensation-electric expansion valve throttling-evaporation ".
An improvement is provided with the 4th check valve 74 pointing to reservoir 5 between first port 31 and described reservoir 5 entrance of described evaporimeter 3 again; The second electric expansion valve 82 is provided with between the outlet and the outlet of condenser 2 of reservoir 5.The effect of the 4th check valve 74 is: avoid when evaporimeter 3 is in low-side heat exchanger, and while entering reservoir 5 after high-pressure refrigerant condensation, part bypass directly flows to evaporimeter 3 without electric expansion valve throttling, thus causes heat transfer effect poor.The effect of the second electric expansion valve 82 is: when heating mode or hot-water mode, and the refrigerant liquid throttling of condensed high-temperature high-pressure refrigerant liquid being become low-temp low-pressure enters devaporation heat exchange in condenser 2, and completion system circulates
Another improvement is provided with the 4th check valve 74 pointing to reservoir 5 between first port 31 and described reservoir 5 entrance of described evaporimeter 3; The 3rd electric expansion valve 83 is provided with between the outlet and the outlet of heat regenerator 4 of reservoir 5.The effect of the 4th check valve 74 is: avoid when evaporimeter 3 is in low-side heat exchanger, and while entering reservoir 5 after high-pressure refrigerant condensation, part bypass directly flows to evaporimeter 3 without electric expansion valve throttling, thus causes heat transfer effect poor.The effect of the 3rd electric expansion valve 83 is: when hot-water mode defrosts, switch the conducting state of the first four-way change-over valve 61 and the second four-way change-over valve 62, heat regenerator 4 is made to become the evaporation side heat exchanger of low pressure, condenser 2 is made to become the condensation side heat exchanger of high pressure, and the refrigerant liquid that liquid for HTHP condensed from condenser 2 refrigerant liquid throttling becomes low-temp low-pressure is just entered devaporation heat exchange in heat regenerator 4 by the 3rd electric expansion valve 83, completion system circulates, when removing original operation hot-water mode simultaneously, the frost that condenser 2 is hoarded.
To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
1. a heat recovery air conditioner unit, comprise compressor (1), evaporimeter (3), condenser (2), heat regenerator (4) and reservoir (5), it is characterized in that: be serially connected with two four-way change-over valves successively at the exhaust outlet of compressor (1), wherein, the D1 mouth of the first four-way change-over valve (61) is communicated with the exhaust outlet of compressor (1), its E1 mouth is connected with the D2 mouth of the second four-way change-over valve (62), its S1 mouth is connected with compressor (1) air entry by the first check valve (71) pointing to compressor (1) air entry, its C1 mouth is connected with the entrance of described heat regenerator (4), the E2 mouth of described second four-way change-over valve (62) is connected with second port (32) of described evaporimeter (3), its S2 mouth is connected with the air entry of compressor (1), and its C2 mouth is connected with the import of described condenser (2), the outlet of described heat regenerator (4) is connected to first port (31) of described evaporimeter (3) by described reservoir (5), the first electric expansion valve (81), the outlet of described condenser (2) is connected to first port (31) of described evaporimeter (3) by reservoir (5), the first electric expansion valve (81).
2. heat recovery air conditioner unit according to claim 1, is characterized in that: between the outlet and the entrance of reservoir (5) of condenser (2), be provided with the second check valve (72) pointing to reservoir (5); The 3rd check valve (73) pointing to reservoir (5) is provided with between the outlet and the entrance of reservoir (5) of heat regenerator (4).
3. heat recovery air conditioner unit according to claim 2, is characterized in that: between described evaporimeter (3) first port (31) and described reservoir (5) entrance, be provided with the 4th check valve (74) pointing to reservoir (5); The second electric expansion valve (82) is provided with between the outlet and the outlet of condenser (2) of reservoir (5).
4. heat recovery air conditioner unit according to claim 2, is characterized in that: between described evaporimeter (3) first port (31) and described reservoir (5) entrance, be provided with the 4th check valve (74) pointing to reservoir (5); The 3rd electric expansion valve (83) is provided with between the outlet and the outlet of heat regenerator (4) of reservoir (5).
5. heat recovery air conditioner unit according to claim 1, is characterized in that: described first four-way change-over valve (61) and the second four-way change-over valve (62) are pattern and switch cross valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520051780.2U CN204535185U (en) | 2015-01-26 | 2015-01-26 | Heat recovery air conditioner unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520051780.2U CN204535185U (en) | 2015-01-26 | 2015-01-26 | Heat recovery air conditioner unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204535185U true CN204535185U (en) | 2015-08-05 |
Family
ID=53749177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520051780.2U Active CN204535185U (en) | 2015-01-26 | 2015-01-26 | Heat recovery air conditioner unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204535185U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595098A (en) * | 2019-10-08 | 2019-12-20 | 珠海格力电器股份有限公司 | Air conditioning system and control method |
| CN112344575A (en) * | 2020-11-24 | 2021-02-09 | 山东朗进科技股份有限公司 | Heat recovery air conditioning system for battery replacement station, control method of heat recovery air conditioning system and battery replacement station |
-
2015
- 2015-01-26 CN CN201520051780.2U patent/CN204535185U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595098A (en) * | 2019-10-08 | 2019-12-20 | 珠海格力电器股份有限公司 | Air conditioning system and control method |
| CN112344575A (en) * | 2020-11-24 | 2021-02-09 | 山东朗进科技股份有限公司 | Heat recovery air conditioning system for battery replacement station, control method of heat recovery air conditioning system and battery replacement station |
| CN112344575B (en) * | 2020-11-24 | 2024-01-30 | 山东朗进科技股份有限公司 | Heat recovery air conditioning system of power exchange station, control method of heat recovery air conditioning system and power exchange station |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211739592U (en) | Air conditioning system capable of continuously heating | |
| CN103335463B (en) | A kind of pump type heat air cooling air conditioner device subregion functionalization defrost system | |
| CN203907772U (en) | Air conditioning system with defrosting function | |
| CN105004114B (en) | Air conditioner and its Defrost method | |
| CN110425764B (en) | Heat exchange system and control method | |
| CN100535548C (en) | Super low temperature heat pump air conditioner system | |
| CN103807997A (en) | Air conditioner system and control method thereof | |
| CN203068769U (en) | Air conditioning system | |
| CN105020924A (en) | Air source enhanced vapor injection heat pump system | |
| CN108362027B (en) | heat pump system and control method thereof | |
| CN103983037A (en) | Two-stage compression air conditioning system with defrosting function | |
| CN113970194B (en) | Heat pump system | |
| CN106288562A (en) | The defrosting of a kind of air source heat pump system controls devices and methods therefor | |
| CN105222436A (en) | The control method of air-conditioning system and air-conditioning system | |
| CN110425765B (en) | Heat exchange system and control method | |
| CN103615836A (en) | Screw type total heat recovery air cooled heat pump air conditioning unit | |
| CN205137703U (en) | Air -conditioner | |
| CN104515319A (en) | Air conditioning system | |
| CN105258389A (en) | Compensation type dual-source heat pump cold and hot water unit | |
| CN105276861A (en) | Compensation type double-source heat pump cold and hot air air-conditioner unit | |
| CN204853731U (en) | Air conditioning system | |
| CN105333641A (en) | Air-source water heating system of air conditioner | |
| CN204535185U (en) | Heat recovery air conditioner unit | |
| CN210772602U (en) | Anti-frosting heat pump air conditioning system | |
| CN110631286B (en) | Heat exchange system and control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |