CN114110841B

CN114110841B - Absorption type refrigeration air-conditioning system and control method thereof

Info

Publication number: CN114110841B
Application number: CN202111346089.3A
Authority: CN
Inventors: 罗攀; 刘磊; 曹振; 陈必奎
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2023-02-28
Anticipated expiration: 2041-11-15
Also published as: CN114110841A

Abstract

The invention relates to an absorption refrigeration air-conditioning system and a control method thereof, wherein the absorption refrigeration air-conditioning system comprises: the evaporation chamber and the absorption chamber are communicated with each other; the high-temperature water channel and the absorption chamber are configured to enable high-temperature industrial wastewater in the high-temperature water channel to exchange heat with the absorbent in the absorption chamber; the cooling water channel is arranged between the evaporation chamber and the cooling water channel, and the normal-temperature industrial wastewater in the cooling water channel can exchange heat with the refrigerant in the evaporation chamber; and the refrigerant in the user side heat exchange channel can exchange heat with the refrigerant in the evaporation chamber. The heat and the cold in the industrial wastewater are used as energy sources for system operation, so that the energy consumption is reduced, and the resources are effectively saved.

Description

Absorption type refrigeration air-conditioning system and control method thereof

Technical Field

The invention relates to the technical field of energy-saving refrigeration, in particular to an absorption refrigeration air-conditioning system and a control method thereof.

Background

Absorption refrigeration refers to a process of utilizing a special working substance pair, namely an absorbent and a refrigerant, and enabling the refrigerant to perform substance state conversion through the absorption and release of the refrigerant by the absorbent, thereby absorbing and releasing heat. The refrigerant can be desorbed only by a certain amount of heat after being absorbed by the absorbent, the desorbed refrigerant can be converted into liquid by a certain amount of cold, the liquid refrigerant can absorb the heat to realize the refrigeration process, the refrigerant after absorbing the heat can be absorbed by the absorbent again, and the intermittent refrigeration is performed in the circulation manner. With the popularization of the energy-saving and emission-reduction concept, how to save energy in the refrigeration process becomes an important research direction.

Disclosure of Invention

The invention provides an absorption refrigeration air-conditioning system and a control method thereof, aiming at the problem of energy conservation in the refrigeration process, so as to save energy.

An absorption refrigeration air conditioning system comprising:

an absorption chamber;

an evaporation chamber in communication with the absorption chamber;

the high-temperature water channel can be filled with high-temperature industrial wastewater, and the high-temperature water channel and the absorption chamber are configured in such a way that the high-temperature industrial wastewater in the high-temperature water channel can exchange heat with the absorbent in the absorption chamber;

the cooling water channel can be filled with normal-temperature industrial wastewater, and the cooling water channel and the evaporation chamber are configured in such a way that the normal-temperature industrial wastewater in the cooling water channel can exchange heat with a refrigerant in the evaporation chamber;

the system comprises a user side heat exchange channel, wherein the user side heat exchange channel can be communicated with a chamber which needs to be refrigerated by a user to form a refrigeration working medium circulation loop, the configuration between the user side heat exchange channel and an evaporation chamber is that the refrigeration working medium in the user side heat exchange channel can exchange heat with a refrigerant in the evaporation chamber.

The scheme provides an absorption refrigeration air-conditioning system, which utilizes the heat of high-temperature industrial wastewater as a heat source to release the refrigerant absorbed by the absorbent in the absorption chamber; and the cold energy of the normal-temperature industrial wastewater is utilized to convert the gaseous refrigerant in the evaporation chamber into liquid. The liquid refrigerant in the evaporation chamber can absorb the heat of the refrigeration working medium in the user side heat exchange channel, so that a cooling medium with lower temperature is provided for a user, and the refrigeration process is realized. The heat and the cold in the industrial wastewater are applied in the whole process, so that the energy consumption is reduced, and the resources are effectively saved.

In one embodiment, a first switch valve and a second switch valve are arranged on the high-temperature water channel, and the part of the high-temperature water channel for exchanging heat with the absorption chamber is a high-temperature water heat exchange section;

in the flowing direction of the high-temperature industrial wastewater in the high-temperature water channel, the first switch valve is positioned at the upstream of the high-temperature water heat exchange section, and the second switch valve is positioned at the downstream of the high-temperature water heat exchange section.

In one embodiment, the part of the high-temperature water passage for exchanging heat with the absorption chamber is a high-temperature water temporary storage chamber, and the absorption chamber can be placed into the high-temperature water temporary storage chamber.

In one embodiment, the absorption refrigeration air-conditioning system further comprises a lifting unit connected with the absorption chamber and used for transporting the absorption chamber between a first position and a second position;

when in the first position, the absorption chamber can be immersed in the high-temperature industrial wastewater in the high-temperature water temporary storage chamber;

in the second position, the absorption chamber leaves the high-temperature industrial wastewater in the high-temperature water temporary storage chamber.

In one embodiment, a third switch valve and a fourth switch valve are arranged on the cooling water channel, and the part of the cooling water channel for exchanging heat with the evaporation chamber is a cooling water heat exchange section;

and in the circulation direction of the normal-temperature industrial wastewater in the cooling water channel, the third switch valve is positioned at the upstream of the cooling water heat exchange section, and the fourth switch valve is positioned at the downstream of the cooling water heat exchange section.

In one embodiment, the cooling water heat exchange section is arranged in the evaporation chamber.

In one embodiment, the user-side heat exchange channel includes a heat exchange chamber, the heat exchange chamber has an air inlet and an air outlet, the air inlet of the heat exchange chamber can be communicated with a user device, the air outlet of the heat exchange chamber can be communicated with a user device, and the evaporation chamber is located in the heat exchange chamber.

In one embodiment, the air inlet and/or the air outlet of the heat exchange chamber are/is provided with a fan.

In one embodiment, the air inlet and/or the air outlet of the heat exchange chamber are/is provided with a heat exchange switch valve.

In one embodiment, the absorption chamber is communicated with the evaporation chamber through a gas passage, gaseous refrigerant can circulate between the absorption chamber and the evaporation chamber through the gas passage, and an auxiliary switch valve is arranged on the gas passage.

In one embodiment, the absorption chambers and the evaporation chambers are both multiple, the absorption chambers and the evaporation chambers are arranged in a one-to-one correspondence manner, and each evaporation chamber alternately exchanges heat with the user side heat exchange channel.

A control method of an absorption refrigeration air-conditioning system is provided, and the absorption refrigeration air-conditioning system is the absorption refrigeration air-conditioning system, and the control method comprises the following steps:

s1, an absorption refrigeration process, wherein the conduction of the user side heat exchange channel is controlled, and a liquid refrigerant in the evaporation chamber absorbs heat and evaporates and is absorbed by an absorbent in the absorption chamber;

after the absorption refrigeration process is finished, closing the user side heat exchange channel and entering a desorption process;

s2, a desorption process, namely introducing high-temperature industrial wastewater into the high-temperature water channel, and immersing the absorption chamber in the high-temperature industrial wastewater in the high-temperature water channel, so that the absorbent releases the previously absorbed refrigerant, and the released refrigerant enters the evaporation chamber;

introducing normal-temperature industrial wastewater into the cooling water channel, and immersing the evaporation chamber in the normal-temperature industrial wastewater in the cooling water channel to convert the gaseous refrigerant in the evaporation chamber into a liquid state;

and after the desorption process is finished, closing the high-temperature water channel and the cooling water channel, and returning to the step S1 when the fact that the user needs to refrigerate is detected.

According to the scheme, the control method of the absorption refrigeration air-conditioning system is provided, high-temperature industrial wastewater is introduced into the high-temperature water channel, and normal-temperature industrial wastewater is introduced into the cooling water channel, so that the desorption process of the refrigerant is completed after the refrigeration process is finished, and the refrigerant is ready for the next refrigeration. Energy power parts such as a compressor and the like are not needed, power consumption in the whole process is reduced, and resources are saved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a system diagram of the absorption refrigeration air conditioning system in the embodiment during absorption refrigeration;

FIG. 2 is a system diagram of the absorption refrigeration air-conditioning system of the present embodiment during desorption;

fig. 3 is a schematic structural diagram of the position of the lifting unit in this embodiment;

fig. 4 is a flowchart of a control method of the absorption refrigeration air conditioning system according to this embodiment.

Description of the reference numerals:

10. an absorption refrigeration air conditioning system; 11. an absorption chamber; 12. an evaporation chamber; 13. a high temperature water channel; 131. a first on-off valve; 132. a second on-off valve; 133. a high-temperature water temporary storage chamber; 14. a cooling water passage; 141. a third on-off valve; 142. a fourth switching valve; 143. a cooling water heat exchange section; 15. a user side heat exchange channel; 151. a heat exchange chamber; 152. an air inlet; 153. an air outlet; 154. a fan; 155. a heat exchange switch valve; 16. a lifting unit; 161. a drive motor; 17. a gas channel; 171. and (4) auxiliary switch valves.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

As shown in fig. 1 and 2, in one embodiment, there is provided an absorption refrigeration air conditioning system 10 comprising:

an absorption chamber 11;

an evaporation chamber 12, the evaporation chamber 12 being in communication with the absorption chamber 11;

a high-temperature water channel 13, wherein high-temperature industrial wastewater can be introduced into the high-temperature water channel 13, and a space between the high-temperature water channel 13 and the absorption chamber 11 is configured such that the high-temperature industrial wastewater in the high-temperature water channel 13 can exchange heat with the absorbent in the absorption chamber 11;

a cooling water channel 14, wherein normal temperature industrial wastewater can be introduced into the cooling water channel 14, and a heat exchange can be performed between the cooling water channel 14 and the evaporation chamber 12 between the normal temperature industrial wastewater in the cooling water channel 14 and the refrigerant in the evaporation chamber 12;

the system comprises a user side heat exchange channel 15, wherein the user side heat exchange channel 15 can be communicated with a chamber which needs to be refrigerated by a user to form a refrigeration working medium circulation loop, a configuration is arranged between the user side heat exchange channel 15 and the evaporation chamber 12, and the refrigeration working medium in the user side heat exchange channel 15 can exchange heat with a refrigerant in the evaporation chamber 12.

In the absorption refrigeration air-conditioning system 10 provided by the above scheme, the heat of the high-temperature industrial wastewater is used as a heat source, so that the refrigerant absorbed by the absorbent in the absorption chamber 11 can be released; the cold energy of the normal-temperature industrial wastewater is utilized to enable the gaseous refrigerant in the evaporation chamber 12 to be converted into liquid. The liquid refrigerant in the evaporation chamber 12 can absorb the heat of the refrigerant in the user side heat exchange channel 15, so as to provide a cooling medium with a lower temperature for a user, thereby realizing a refrigeration process. The heat and the cold in the industrial wastewater are applied in the whole process, so that the energy consumption is reduced, and the resources are effectively saved.

Specifically, as shown in fig. 1, in the absorption refrigeration process, the user side heat exchange channel 15 is conducted, a high-temperature refrigerant in the compartment to be refrigerated enters the user side heat exchange channel 15 and then exchanges heat with the liquid refrigerant in the evaporation chamber 12, and the refrigerant after absorbing heat is changed into a gas state and enters the absorption chamber 11. Gaseous refrigerant is absorbed by the absorbent in the absorption chamber 11 after entering the absorption chamber 11, and along with the continuous absorption of the refrigerant by the absorbent, the vapor pressure in the evaporation chamber 12 is reduced, and the liquid refrigerant is continuously evaporated to absorb heat in the user side heat exchange channel 15, so that low-temperature refrigeration working medium is output from the user side heat exchange channel 15. When the absorption of the absorbent in the absorption chamber 11 reaches saturation, the absorption refrigeration process is finished.

In the process of absorption refrigeration, the high-temperature water passage 13 may be in a cut-off state, or the absorption chamber 11 is separated from the high-temperature industrial wastewater in the high-temperature water passage 13. In summary, the absorption chamber 11 is not submerged in the high-temperature industrial wastewater at this time, so that the absorbent in the absorption chamber 11 can normally absorb the refrigerant. Meanwhile, the cooling water channel 14 may be in a cut-off state, or the evaporation chamber 12 is not immersed in the normal temperature industrial wastewater, so that the liquid refrigerant in the evaporation chamber 12 can be evaporated into a gaseous state.

After the absorption refrigeration process is finished, as shown in fig. 2, desorption is needed for the next refrigeration.

Specifically, as shown in fig. 2, during the desorption process, the user-side heat exchange channel 15 is cut off, and at this time, the refrigeration process is suspended. High-temperature industrial wastewater is introduced into the high-temperature water channel 13, and normal-temperature industrial wastewater is introduced into the cooling water channel 14. The absorption chamber 11 is submerged in the high temperature industrial wastewater, and as the absorption chamber 11 is heated, the refrigerant originally absorbed in the absorbent is released to form a gaseous refrigerant. Gaseous refrigerant enters the evaporation chamber 12 from the absorption chamber 11. The evaporation chamber 12 is immersed in the normal temperature industrial wastewater, and the gaseous refrigerant entering the evaporation chamber 12 is changed into a liquid state under the heat absorption effect of the normal temperature industrial wastewater. When the refrigerant in the absorbent is completely released, the desorption process is finished.

After the desorption process is finished, the high temperature water passage 13 may be closed, or the absorption chamber 11 may be taken out of the high temperature industrial wastewater in the high temperature water passage 13, in short, so that the absorption chamber 11 is separated from the high temperature industrial wastewater. Meanwhile, the cooling water channel 14 can be cut off, or the evaporation chamber 12 can be taken out of the normal-temperature industrial wastewater of the cooling water channel 14. So as to quickly enter the refrigeration process when receiving the refrigeration instruction.

Further, as shown in fig. 1 and 2, in one embodiment, a first switching valve 131 and a second switching valve 132 are provided on the high temperature water passage 13. The part of the high-temperature water channel 13 for exchanging heat with the absorption chamber 11 is a high-temperature water heat exchange section;

in the flowing direction of the high-temperature industrial wastewater in the high-temperature water passage 13, the first switching valve 131 is located upstream of the high-temperature water heat-exchange section, and the second switching valve 132 is located downstream of the high-temperature water heat-exchange section.

In the desorption process, when the high-temperature industrial wastewater needs to be introduced into the high-temperature water passage 13, both the first on-off valve 131 and the second on-off valve 132 are in an open state. When the desorption process is finished, both the first switching valve 131 and the second switching valve 132 may be switched to the closed state. After the first switch valve 131 and the second switch valve 132 are closed, the high-temperature industrial wastewater is not continuously introduced into the high-temperature water heat exchange section, and the heat is gradually reduced with the passage of time until the absorption of the refrigerant by the absorbent in the subsequent refrigeration process is not affected.

Further specifically, during the desorption process, the high-temperature water heat-exchange section and the absorption chamber 11 may be arranged in a close or contact manner, so that the heat of the high-temperature industrial wastewater in the high-temperature water heat-exchange section can be absorbed by the absorbent in the absorption chamber 11.

Alternatively, as shown in fig. 1 and 2, in another embodiment, a portion of the high temperature water passage 13 for exchanging heat with the absorption chamber 11 is a high temperature water temporary storage chamber 133, and the absorption chamber 11 can be placed in the high temperature water temporary storage chamber 133. In other words, the high temperature water heat exchange section is the high temperature water temporary storage chamber 133.

In the desorption process, the absorption chamber 11 is directly placed into the high-temperature water temporary storage chamber 133 so that the absorption chamber 11 is submerged in the high-temperature industrial wastewater in the high-temperature water temporary storage chamber 133. After the desorption is finished, the absorption chamber 11 is lifted from the high-temperature water temporary storage chamber 133 to be separated from the high-temperature industrial wastewater.

For example, as shown in fig. 3, in one embodiment, the absorption refrigeration and air-conditioning system 10 further comprises a lifting unit 16, wherein the lifting unit 16 is connected with the absorption chamber 11 and is used for transporting the absorption chamber 11 between a first position and a second position;

in the first position, the absorption chamber 11 can be immersed in the high-temperature industrial wastewater in the high-temperature water temporary storage chamber 133;

in the second position, the absorption chamber 11 leaves the high temperature industrial wastewater in the high temperature water temporary storage chamber 133.

The lifting unit 16 controls the lifting of the absorption chamber 11 to switch the position of the absorption chamber 11. During desorption, the lifting unit 16 places the absorption chamber 11 at the first position. After the desorption process is finished, the lifting unit 16 lifts the absorption chamber 11 to the second position, so that the absorption chamber 11 is separated from the high-temperature industrial wastewater instantly.

Specifically, in one embodiment, the lifting unit 16 includes a driving motor 161, and a main shaft of the driving motor 161 is connected to the absorption chamber 11 for driving the absorption chamber 11 to switch between the first position and the second position.

Further, as shown in fig. 1 and fig. 2, in an embodiment, a third on-off valve 141 and a fourth on-off valve 142 are disposed on the cooling water channel 14, and a portion of the cooling water channel 14 for performing heat exchange with the evaporation chamber 12 is a cooling water heat exchange section 143;

in the flowing direction of the normal-temperature industrial wastewater in the cooling water channel 14, the third on-off valve 141 is located upstream of the cooling water heat exchange section 143, and the fourth on-off valve 142 is located downstream of the cooling water heat exchange section 143.

During desorption, the third switch valve 141 and the fourth switch valve 142 are both in an open state, and normal-temperature industrial wastewater flows through the cooling water heat exchange section 143 to absorb heat of the refrigerant in the evaporation chamber 12, so that the desorbed refrigerant becomes a liquid refrigerant and is stored in the evaporation chamber 12.

After the desorption process is finished, both the third switching valve 141 and the fourth switching valve 142 may be adjusted to be in a closed state, so that the subsequent refrigeration process may be performed normally.

Similarly, the arrangement between the cooling water heat exchange section 143 and the evaporation chamber 12 may be the arrangement between the high-temperature water heat exchange section and the absorption chamber 11.

Specifically, in one embodiment, as shown in fig. 1 and 2, the cooling water heat exchange section 143 is disposed in the evaporation chamber 12. The heat of the gaseous refrigerant in the evaporation chamber 12 is taken away when the normal temperature industrial waste water in the cooling water heat exchange section 143 flows, so that the gaseous refrigerant is converted into the liquid refrigerant.

Further specifically, as shown in fig. 1 and 2, the cooling water heat exchange section 143 penetrates through the evaporation chamber 12, and the cooling water heat exchange section 143 is bent back and forth in the evaporation chamber 12.

Further, in one embodiment, the user side heat exchange channel 15 includes a heat exchange chamber 151, the heat exchange chamber 151 has an air inlet 152 and an air outlet 153, the air inlet 152 of the heat exchange chamber 151 can communicate with a user device, the air outlet 153 of the heat exchange chamber 151 can communicate with a user device, and the evaporation chamber 12 is located in the heat exchange chamber 151.

After the desorption process is finished, if the user equipment room needs to be refrigerated, the high-temperature gas between the user equipment room can be introduced into the heat exchange chamber 151, and after the high-temperature gas enters the heat exchange chamber 151, the heat is absorbed by the liquid refrigerant in the evaporation chamber 12, and the high-temperature gas is changed into low-temperature gas and flows back to the equipment room. The refrigerant having absorbed heat turns into a gaseous state to be absorbed by the absorbent in the absorption chamber 11.

Further, in one embodiment, as shown in fig. 1 and fig. 2, the air inlet 152 of the heat exchange chamber 151 is provided with a fan 154. The air outlet 153 of the heat exchange chamber 151 is provided with a fan 154. When the user equipment room needs cooling, the fan 154 is started. After the cooling is finished, the blower 154 is turned off when the absorbent is desorbed.

Further, in yet another embodiment, as shown in fig. 1 and fig. 2, the air inlet 152 of the heat exchange chamber 151 is provided with a heat exchange on-off valve 155. The air outlet 153 of the heat exchange chamber 151 is provided with a heat exchange switch valve 155. When the user equipment room needs to be refrigerated, the heat exchange switch valve 155 is started, and the air inlet 152 is communicated with the air outlet 153. After the refrigeration is finished, when the absorbent is desorbed, the heat exchange switch valve 155 is closed, and the air inlet 152 and the air outlet 153 are closed.

Further, as shown in fig. 1 and 2, in one embodiment, the absorption chamber 11 and the evaporation chamber 12 are communicated through a gas passage 17, a gaseous refrigerant can flow between the absorption chamber 11 and the evaporation chamber 12 through the gas passage 17, and an auxiliary on-off valve 171 is disposed on the gas passage 17.

During desorption, the auxiliary switch valve 171 is opened, the gas passage 17 is opened, and the desorbed gaseous refrigerant enters the evaporation chamber 12. After the desorption process is completed, if cooling is temporarily not required, the auxiliary on/off valve 171 may be temporarily closed. When refrigeration is needed, the auxiliary on-off valve 171 is opened again, so that the refrigerant converted into a gaseous state after absorbing heat in the refrigeration process can enter the absorption chamber 11 to be absorbed by the absorbent.

Specifically, in one embodiment, the absorbent may be water and the refrigerant may be ammonia. Ammonia is dissolved in water to form ammonia water, and in the desorption process, ammonia gas is separated out and enters the evaporation chamber 12 after the ammonia water is heated by high-temperature industrial wastewater. Because the absorption refrigeration system air conditioning system adopts the working medium of water and ammonia, even if a little leakage occurs, the environment is not polluted greatly.

Further, in one embodiment, the absorption chamber 11 and the evaporation chamber 12 are both multiple, the absorption chamber 11 and the evaporation chamber 12 are arranged in a one-to-one correspondence, and each evaporation chamber 12 alternately exchanges heat with the user side heat exchange channel 15.

Since the cooling process that can be performed by the pair of absorption chamber 11 and evaporation chamber 12 is intermittent, a plurality of sets of absorption chamber 11 and evaporation chamber 12 are provided, and the cooling process is performed alternately for each set, thereby enabling continuous cooling to the user side.

Specifically, when the desorption process is being performed in one of the absorption chambers 11, the other evaporation chambers 12 may perform an absorption refrigeration process.

Further, in one embodiment, the lifting unit 16 is provided in plurality, and the lifting unit 16 is arranged in one-to-one correspondence with the absorption chamber 11. When one of the lifting units 16 lifts the absorption chamber 11, the other lifting unit 16 puts the corresponding absorption chamber 11 into the high-temperature industrial wastewater. The lifting and lowering operations of the respective lifting and lowering units 16 are alternately performed to maintain the liquid refrigerant in at least one of the absorption chambers 11 at any time, so that the cooling process is continuously performed.

Further, in an embodiment, there is provided a control method of the absorption refrigeration air-conditioning system 10, where the absorption refrigeration air-conditioning system 10 is the absorption refrigeration air-conditioning system 10, the control method includes the following steps:

s1, an absorption refrigeration process, wherein the conduction of the user side heat exchange channel 15 is controlled, and a liquid refrigerant in the evaporation chamber 12 absorbs heat and evaporates and is absorbed by an absorbent in the absorption chamber 11;

after the absorption refrigeration process is finished, closing the user side heat exchange channel 15 and entering a desorption process;

s2, a desorption process, namely introducing high-temperature industrial wastewater into the high-temperature water channel 13, and immersing the absorption chamber 11 in the high-temperature industrial wastewater in the high-temperature water channel 13, so that the absorbent releases the previously absorbed refrigerant, and the released refrigerant enters the evaporation chamber 12;

introducing normal-temperature industrial wastewater into the cooling water channel 14, and immersing the evaporation chamber 12 in the normal-temperature industrial wastewater in the cooling water channel 14, so that the gaseous refrigerant in the evaporation chamber 12 is converted into a liquid state;

after the desorption process is completed, the high temperature water passage 13 and the cooling water passage 14 are closed, and when it is detected that the user needs cooling, the process returns to step S1.

According to the scheme, the control method of the absorption refrigeration air-conditioning system 10 is provided, and high-temperature industrial wastewater is introduced into the high-temperature water channel 13, and normal-temperature industrial wastewater is introduced into the cooling water channel 14, so that the desorption process of the refrigerant is completed after the refrigeration process is finished, and the refrigerant is ready for the next refrigeration. Energy power parts such as a compressor and the like are not needed, power consumption in the whole process is reduced, and resources are saved.

Specifically, in an embodiment, the step S1 of controlling the conduction of the user side heat exchange channel 15 includes: and controlling the fan 154 and the heat exchange switch valve 155 to be opened.

In step S1, after the absorption refrigeration process is finished, the specific step of closing the user-side heat exchange channel 15 includes: the blower 154 and the heat exchange switching valve 155 are controlled to be closed.

Further specifically, in one embodiment, in step S2, the high-temperature industrial wastewater is introduced into the high-temperature water channel 13, and the absorption chamber 11 is immersed in the high-temperature industrial wastewater in the high-temperature water channel 13, so that the absorbent releases the previously absorbed refrigerant, and the released refrigerant enters the evaporation chamber 12;

normal-temperature industrial wastewater is introduced into the cooling water channel 14, and the evaporation chamber 12 is immersed in the normal-temperature industrial wastewater in the cooling water channel 14, so that the gaseous refrigerant in the evaporation chamber 12 is converted into a liquid state, specifically comprising the following steps:

the first, second, third, fourth and auxiliary on-off

valves

131, 132, 141, 142 and 171 are controlled to be opened.

In step S2, after the desorption process is completed, the specific steps of closing the high-temperature water passage 13 and the cooling water passage 14 include:

the first, second, third and

fourth switching valves

131, 132, 141 and 142 are controlled to be closed.

Further, after the desorption is completed and when the user has no refrigeration demand, the system is in a preparation stage, each of the on-off valves and the blower 154 are in a closed state, and the absorption chamber 11 is located at the second position.

Further, in one embodiment, as shown in fig. 4, the control method includes the steps of:

s11, under the control of a user refrigeration instruction, starting the fan 154, the heat exchange switch valve 155 and the auxiliary switch valve 171;

s12, after all the gaseous refrigerant in the evaporation chamber 12 is absorbed by the absorbent, or when the refrigerating time reaches a preset value, the fan 154 and the heat exchange switch valve 155 are closed, the lifting unit 16 is started to adjust the absorption chamber 11 to the first position, and the first switch valve 131, the second switch valve 132, the third switch valve 141 and the fourth switch valve 142 are all opened;

s13, when the refrigerant in the absorbent is completely released and the refrigerant in the evaporation chamber 12 is completely changed into a liquid state, the lifting unit 16 starts to adjust the absorption chamber 11 to the second position, and the first on-off valve 131, the second on-off valve 132, the third on-off valve 141, the fourth on-off valve 142, and the auxiliary on-off valve 171 are all closed;

and S14, if the user still needs to refrigerate, returning to the step S11.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An absorption refrigeration air conditioning system, comprising:

an absorption chamber;

an evaporation chamber in communication with the absorption chamber;

the system comprises a user side heat exchange channel, a refrigerant circulating loop and a refrigerating fluid circulating loop, wherein the user side heat exchange channel can be communicated with a chamber which needs to be refrigerated by a user to form the refrigerating fluid circulating loop;

the part of the high-temperature water channel for exchanging heat with the absorption chamber is a high-temperature water temporary storage chamber, and the absorption chamber can be placed into the high-temperature water temporary storage chamber;

the absorption refrigeration air-conditioning system also comprises a lifting unit, wherein the lifting unit is connected with the absorption chamber and is used for transporting the absorption chamber between a first position and a second position;

2. The absorption refrigeration air-conditioning system according to claim 1, wherein a first switch valve and a second switch valve are arranged on the high-temperature water passage, and a part of the high-temperature water passage for exchanging heat with the absorption chamber is a high-temperature water temporary storage chamber;

in the circulation direction of high temperature industrial waste water in the high temperature water passageway, first ooff valve is located the high temperature water keeps in the upper reaches of cavity, the second ooff valve is located the low reaches of cavity is kept in to high temperature water.

3. The absorption chiller air conditioner system of claim 1, wherein the lift unit includes a drive motor having a shaft connected to the absorption chamber for driving the absorption chamber to switch back and forth between the first position and the second position.

4. The absorption refrigeration air-conditioning system according to any one of claims 1 to 3, wherein a third on-off valve and a fourth on-off valve are arranged on the cooling water channel, and a part of the cooling water channel for exchanging heat with the evaporation chamber is a cooling water heat exchange section;

5. The absorption refrigeration air conditioning system according to claim 4 wherein said chilled water heat exchanger section is disposed in said evaporator chamber.

6. The absorption chiller air conditioning system of claim 5, wherein the chilled water heat exchanger section is arranged to meander back and forth in the evaporator chamber.

7. The absorption refrigeration air-conditioning system according to any one of claims 1 to 3, wherein the user-side heat exchange channel comprises a heat exchange chamber, the heat exchange chamber has an air inlet and an air outlet, the air inlet of the heat exchange chamber can be communicated with a user equipment room, the air outlet of the heat exchange chamber can be communicated with a user equipment room, and the evaporation chamber is located in the heat exchange chamber.

8. The absorption refrigeration air conditioning system according to claim 7 wherein the air intake and/or the air outlet of the heat exchange compartment is provided with a fan.

9. The absorption refrigeration air-conditioning system according to claim 7, wherein the air inlet and/or the air outlet of the heat exchange compartment are provided with a heat exchange on-off valve.

10. The absorption refrigeration air-conditioning system according to any one of claims 1 to 3, wherein the absorption chamber and the evaporation chamber are communicated through a gas passage through which a gaseous refrigerant can be circulated between the absorption chamber and the evaporation chamber, and an auxiliary on-off valve is provided on the gas passage.

11. The absorption refrigeration air-conditioning system according to any one of claims 1 to 3, wherein the absorption chambers and the evaporation chambers are provided in plurality, the absorption chambers and the evaporation chambers are provided in one-to-one correspondence, and each evaporation chamber alternately exchanges heat with the user side heat exchange channel.

12. A control method of an absorption refrigeration air-conditioning system, wherein the absorption refrigeration air-conditioning system is the absorption refrigeration air-conditioning system according to any one of claims 1 to 11, the control method comprising the steps of:

introducing normal-temperature industrial wastewater into the cooling water channel, and immersing the evaporation chamber in the normal-temperature industrial wastewater in the cooling water channel to convert a gaseous refrigerant in the evaporation chamber into a liquid state;

13. The method as claimed in claim 12, wherein the step S2 of immersing the absorption chamber in the high-temperature industrial wastewater in the high-temperature water channel comprises the following steps:

the lifting unit places the absorption chamber at the first position.

14. The method of claim 12, further comprising the steps of, after the desorption process is completed:

the lifting unit lifts the absorption chamber to the second position.