Condenser and water chilling unit

Abstract

The invention relates to the technical field of air conditioning equipment, and discloses a condenser which comprises a condensing barrel, a first sealing plate and a first sealing head, the condensing barrel is transversely arranged and comprises a first tube plate end, and a first liquid taking opening is formed in the bottom end of the condensing barrel; the first sealing plate is arranged at the first tube plate end; the first sealing head is arranged at the first tube plate end, the first sealing head and the first sealing plate jointly define a compressor air supply cavity, a refrigerant inlet is formed in the lower end of the first sealing head, a refrigerant outlet is formed in the upper end of the first sealing head, the refrigerant inlet is communicated with the first liquid taking opening, and the refrigerant outlet is communicated with an inlet of an air suspension bearing space in the compressor. The structure of the condenser and the air supply tank can be optimized, and the pipeline arrangement difficulty is reduced. The invention further discloses the water chilling unit.

Description

Technical Field

[0001] This application relates to the technical field of air conditioning equipment, for example, to a condenser and a water chiller unit. Background Art

[0002] Currently, an air suspension compressor works on the principle of suspension by gas bearings, and uses an air film formed by gas extrusion to achieve the functions of support and lubrication. The increase in air pressure of a centrifugal compressor is achieved by the high-speed rotation of the impeller and the pressure boosting of the diffuser. The gas suspension bearing has a simple structure and high rotation accuracy, and is an ideal component under high-speed operation and high-temperature working conditions.

[0003] In an air conditioning system in the related art, it includes a compressor with gas suspension bearings and a gas supply system. Among them, the gas supply system at least includes a gas supply tank, and the gas supply tank is communicated with the liquid extraction port of the condenser and is used to supply gas to the gas suspension bearings.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] Since the gas supply tank is an external independent gas tank structure relative to the condenser, when installing the gas supply tank, a separate bracket needs to be set, and a separate connection pipeline needs to be set, resulting in messy and long pipeline wiring between the gas supply tank of the water chiller unit and the condenser, increasing the installation difficulty.

[0006] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0007] To have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary is not a general review, nor is it intended to identify key / important constituent elements or delineate the protection scope of these embodiments, but rather serves as a preface to the subsequent detailed description.

[0008] The embodiments of the present disclosure provide a condenser and a water chiller unit to optimize the structure of the condenser and the gas supply tank and reduce the difficulty of pipeline layout.

[0009] In some embodiments, the condenser includes a condensation cylinder body, a first sealing plate, and a first head. Among them, the condensation cylinder body is arranged horizontally, includes a first tube sheet end, and a first liquid extraction port is provided at the bottom end of the condensation cylinder body; the first sealing plate is arranged at the first tube sheet end; the first head is arranged at the first tube sheet end, and a compressor air supply cavity is jointly defined between the first head and the first sealing plate. Among them, a refrigerant inlet is provided at the lower end of the first head, a refrigerant outlet is provided at the upper end of the first head, the refrigerant inlet is communicated with the first liquid extraction port, and the refrigerant outlet is communicated with the inlet of the air suspension bearing space in the compressor.

[0010] In some embodiments, the condenser further includes: a heating device, arranged in the compressor air supply cavity and configured to heat the compressor air supply cavity.

[0011] In some embodiments, a second pressure detection device is arranged in the air suspension bearing space for detecting the second pressure in the air suspension bearing space; the condenser further includes: a first pressure detection device, arranged in the compressor air supply cavity for detecting the first pressure in the compressor air supply cavity; a control unit, electrically connected to the first pressure detection device, the second pressure detection device, and the heating device. When the difference between the first pressure and the second pressure is less than a preset difference, the control unit controls the heating device to operate.

[0012] In some embodiments, the condenser further includes: a liquid level detection device, arranged in the compressor air supply cavity and configured to detect the liquid level height in the compressor air supply cavity; a first liquid extraction pipeline, communicated between the first liquid extraction port and the refrigerant inlet; a refrigerant pump, arranged on the first liquid extraction pipeline; when the liquid level is lower than a first preset height value, the control unit controls the refrigerant pump to open to conduct the first liquid extraction pipeline to provide liquid-phase refrigerant to the compressor air supply cavity; or, when the liquid level height is higher than a second preset height value, the control unit controls the refrigerant pump to close to block the first liquid extraction pipeline.

[0013] In some embodiments, the condenser further includes: a check valve, arranged on the first liquid extraction pipeline and located between the refrigerant pump and the refrigerant inlet, and the conduction direction is from the first liquid extraction port towards the refrigerant inlet.

[0014] In some embodiments, the condenser further includes: a filtering device, arranged on the first liquid extraction pipeline and located between the first liquid extraction port and the refrigerant pump.

[0015] In some embodiments, the condenser further includes: a first tube sheet disposed within the condensation cylinder body, near the first sealing plate, and a first water chamber is formed between the first tube sheet and the first sealing plate; a second tube sheet disposed at the second tube sheet end of the condensation cylinder body, and a condensation chamber is defined between the first tube sheet and the second tube sheet; a second head disposed at the second tube sheet end and defining a second water chamber with the second tube sheet; the first tube sheet end and the second tube sheet end are oppositely disposed at two ends of the cylinder body.

[0016] In some embodiments, the condenser further includes: a partition plate disposed within the first water chamber to divide the first water chamber into a condensate water outlet chamber and a condensate water inlet chamber which are distributed vertically.

[0017] In some embodiments, the condenser further includes: a second sealing plate disposed between the first tube sheet and the first sealing plate, a first water chamber is defined between the second sealing plate and the first tube sheet, and a heat insulation chamber is defined between the second sealing plate and the first sealing plate.

[0018] In some embodiments, the water chiller includes: an evaporator including an evaporation cylinder body, and a second liquid extraction port is provided at the bottom of the evaporation cylinder body; a compressor including a housing, and an inlet of the air suspension bearing space is provided on the housing; and, the condenser as described above, and the refrigerant inlet is further communicated with the second liquid extraction port.

[0019] The condenser and the water chiller provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] By setting the space between the first sealing plate and the first head provided at the first tube sheet end of the condenser as a compressor air supply chamber, the integration of the condenser and the air supply tank can be achieved, thereby simplifying the structure of the water chiller; at the same time, the first liquid extraction port provided at the bottom end of the condenser is communicated with the refrigerant inlet at the lower end of the first head, and the connecting pipeline can be arranged below the condenser, thereby shortening the length of the connecting pipeline and helping to reduce the difficulty of pipeline layout.

[0021] The above general description and the following description are only exemplary and explanatory and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation, and among them:

[0023] Figure 1 is a schematic structural diagram of a condenser provided by an embodiment of the present disclosure;

[0024] Figure 2 It is a schematic structural diagram of another condenser provided by an embodiment of the present disclosure;

[0025] Figure 3 It is a schematic structural diagram of another condenser provided by an embodiment of the present disclosure;

[0026] Figure 4 is Figure 3 a partially enlarged schematic diagram;

[0027] Figure 5 It is a schematic system diagram of a chiller provided by an embodiment of the present disclosure;

[0028] Figure 6 It is a schematic structural diagram of a chiller provided by an embodiment of the present disclosure.

[0029] Reference numerals:

[0030] 10. Condenser;

[0031] 100. Condensing cylinder; 101. First tube sheet end; 102. Second tube sheet end; 111. First sealing plate; 112. Second sealing plate; 121. First head; 122. Second head; 131. First tube sheet; 132. Second tube sheet; 140. Partition plate; 150. Condensing chamber; 161. First water chamber; 162. Second water chamber;

[0032] 201. First liquid extraction port; 202. Refrigerant inlet; 203. Refrigerant outlet; 204. Second liquid extraction port;

[0033] 300. Compressor air supply chamber;

[0034] 400. Heating device;

[0035] 510. First pressure detection device; 520. Liquid level detection device;

[0036] 610. First liquid extraction pipeline; 620. Second liquid extraction pipeline;

[0037] 700. Refrigerant pump;

[0038] 800. Check valve;

[0039] 900. Filter device;

[0040] 20. Evaporator; 21. Evaporation cylinder;

[0041] 30. Compressor. Detailed implementation manners

[0042] In order to more comprehensively understand the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The attached drawings are only for reference and explanation, and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, numerous details are provided to give a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be shown in a simplified manner to simplify the drawings.

[0043] In the description of the embodiments of the present disclosure, the terms "first", "second", etc. in the specification, claims and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so as to implement the embodiments of the present disclosure described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0044] In the embodiments of the present disclosure, the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and their implementations, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation. And, in addition to being able to represent an orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0045] In addition, the terms "arranged", "connected", "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0046] Unless otherwise specified, the term "plurality" means two or more.

[0047] In the embodiments of the present disclosure, the character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B.

[0048] The term "and / or" is an associative relationship describing an object, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B these three relationships.

[0049] It should be noted that, without conflict, the embodiments in the present disclosure and the features in the embodiments may be combined with each other.

[0050] At present, the air suspension compressor works on the principle of being suspended by gas bearings, and uses the air film formed by gas extrusion to achieve the functions of support and lubrication. The increase in the air pressure of the centrifugal compressor is achieved by the high-speed rotation of the impeller and the pressure increase of the diffuser. The gas suspension bearing has a simple structure and high rotation accuracy, and is an ideal component under high-speed operation and high-temperature working conditions.

[0051] In an air-conditioning system in the related art, it includes a compressor with gas suspension bearings and a gas supply system. Among them, the gas supply system at least includes a gas supply tank, and the gas supply tank is communicated with the liquid taking port of the condenser and is used for supplying gas to the gas suspension bearings.

[0052] However, since the gas supply tank is an external independent gas tank structure relative to the condenser, when installing the gas supply tank, a separate bracket needs to be set, and a separate connecting pipeline needs to be set, resulting in messy and long pipeline wiring between the gas supply tank of the chiller and the condenser, increasing the installation difficulty.

[0053] Therefore, the embodiments of the present disclosure provide a condenser to optimize the structure of the condenser and the gas supply tank and reduce the difficulty of pipeline layout.

[0054] Combined Figures 1 to 6 As shown, the condenser 10 provided by the embodiments of the present disclosure includes a condensation cylinder body 100, a first sealing plate 111, and a first head 121. Among them, the condensation cylinder body 100 is arranged horizontally, includes a first tube sheet end 101, and a first liquid taking port 201 is provided at the bottom end of the condensation cylinder body 100; the first sealing plate 111 is arranged at the first tube sheet end 101; the first head 121 is arranged at the first tube sheet end 101, and a compressor gas supply cavity 300 is jointly defined between the first head 121 and the first sealing plate 111. Among them, a refrigerant inlet 202 is provided at the lower end of the first head 121, a refrigerant outlet 203 is provided at the upper end of the first head 121, the refrigerant inlet 202 is communicated with the first liquid taking port 201, and the refrigerant outlet 203 is communicated with the inlet of the gas suspension bearing space in the compressor.

[0055] Optionally, both ends of the condensation cylinder body 100 of the condenser 10 have openings, and one of the openings is set as the first tube sheet end 101. Among them, a condensation inlet is provided at the upper end of the condensation cylinder body 100 for the entry of gaseous refrigerant. After the gaseous refrigerant enters the cylinder body 100, it condenses into gaseous refrigerant. A condensation outlet is provided at the bottom end of the cylinder body for the outlet of liquid refrigerant, so as to realize the circulation flow of the refrigerant. Among them, under the action of gravity, the liquid refrigerant accumulates at the bottom of the condensation cylinder body 100, and an outlet for the liquid refrigerant is provided at the bottom end of the cylinder body to facilitate the discharge of the liquid refrigerant.

[0056] Optionally, the first liquid extraction port 201 is arranged in the liquid-phase refrigerant area inside the condensation cylinder body 100 to ensure that the compressor air supply chamber 300 can obtain sufficient liquid-phase refrigerant. In fact, the compressor air supply chamber 300 is a liquid storage chamber for supplying liquid-phase refrigerant to the air suspension bearing space. After the liquid-phase refrigerant enters the air suspension bearing space, it vaporizes to suspend the shaft.

[0057] Optionally, a first sealing plate 111 is arranged at the first tube sheet end 101, and a first head 121 is arranged. The first sealing plate 111 and the first head 121 together enclose an independent space defined as the compressor air supply chamber 300. In this way, it is possible to avoid separately arranging an air supply tank and the corresponding support, which helps to reduce the structural complexity of the chiller and is convenient for reducing the volume of the overall module of the chiller.

[0058] Optionally, a refrigerant inlet 202 is arranged at the lower end of the first head 121. Since the positions where the refrigerant inlet 202 and the first liquid extraction port 201 are arranged are both at the lower end of the condensation cylinder body 100, the connecting pipeline between the two is also arranged at the lower end of the condensation cylinder body without the need to arrange a too long pipeline. Further, the first liquid extraction port 201 is arranged close to the first sealing plate 111 to minimize the length of the connecting pipeline between the liquid extraction port 201 and the refrigerant inlet 202.

[0059] By using the condenser provided in the embodiment of the present disclosure, by setting the space between the first sealing plate and the first head arranged at the first tube sheet end of the condenser as the compressor air supply chamber, the integration of the condenser and the air supply tank can be realized, thereby simplifying the structure of the chiller; at the same time, the first liquid extraction port arranged at the bottom end of the condenser is communicated with the refrigerant inlet at the lower end of the first head, and the connecting pipeline can be arranged below the condenser, thereby shortening the length of the connecting pipeline and helping to reduce the difficulty of pipeline layout.

[0060] Optionally, the condenser 10 further includes a heating device 400. The heating device 400 is arranged in the compressor air supply chamber 300 and is configured to heat the compressor air supply chamber 300.

[0061] Optionally, by operating the heating device 400, heating in the compressor air supply chamber 300 can be realized to maintain the pressure difference between the pressure in the compressor air supply chamber 300 and the pressure in the air suspension bearing space, and ensure the transportation of the liquid-phase refrigerant. Among them, the pressure in the compressor air supply chamber 300 is greater than the pressure in the air suspension bearing space so that the liquid-phase refrigerant can be transported into the air suspension bearing space.

[0062] Optionally, the heating device 400 is a PCT heating device arranged inside the liquid-phase refrigerant in the compressor air supply chamber 300 to facilitate heating and pressurizing the liquid-phase refrigerant and ensure the uniformity of the temperature.

[0063] Among them, the PTC heating device has the characteristic of automatic constant temperature, and can maintain a constant temperature in any application scenario, thus ensuring the stability and reliability of heating; the surface temperature of the PTC heating device is basically independent of the ambient temperature, and is only related to the Curie temperature of the PTC thermistor and the applied voltage; the PTC heating device generally consists of a PTC ceramic heating element and an aluminum tube, so it has a high thermal efficiency and will not produce the surface "reddening" phenomenon of heaters such as electric heating tubes, and has the advantages of high efficiency, rapidity, safety, reliability, energy conservation and environmental protection.

[0064] Optionally, the heating device 400 can also be an electric heating wire, and the electric heating wire can be arranged on the outer surface of the first head 121. The electric heating wire has the characteristic of rapid heating to quickly realize the increase of temperature and pressure.

[0065] Optionally, the condenser 10 further includes a first pressure detection device 510 and a control unit. Among them, a second pressure detection device is arranged in the air suspension bearing space for detecting the second pressure in the air suspension bearing space; the first pressure detection device 510 is arranged in the compressor air supply chamber 300 for detecting the first pressure in the compressor air supply chamber 300; the control unit is electrically connected to the first pressure detection device 510, the second pressure detection device and the heating device 400, and when the difference between the first pressure and the second pressure is less than a preset difference, the control unit can control the heating device 400 to operate.

[0066] Since the liquid-phase refrigerant is provided to the air suspension bearing space by utilizing the pressure difference between the compressor air supply chamber 300 and the air suspension bearing space, therefore, when the difference between the first pressure and the second pressure is less than the preset difference, it indicates that the pressure in the compressor air supply chamber 300 is insufficient, and a stable pressure difference cannot be guaranteed, and thus a stable supply of the liquid-phase refrigerant to the air suspension bearing space cannot be guaranteed. Therefore, when the difference between the first pressure and the second pressure is less than the preset difference, the control unit can control the heating device 400 to operate to heat and pressurize the compressor air supply chamber 300.

[0067] Optionally, the condenser 10 further includes a liquid level detection device 520, a first liquid extraction pipeline 610 and a refrigerant pump 700. Among them, the liquid level detection device 520 is arranged in the compressor air supply chamber 300 and is configured to detect the liquid level height in the compressor air supply chamber 300; the first liquid extraction pipeline 610 is communicated between the first liquid extraction port 201 and the refrigerant inlet 202; the refrigerant pump 700 is arranged on the first liquid extraction pipeline 610, and the refrigerant pump 700 is configured to be opened to conduct the first liquid extraction pipeline 610 to supply the liquid-phase refrigerant to the compressor air supply chamber 300 when the liquid level is lower than the first preset height value, or to be closed to block the first liquid extraction pipeline 610 when the liquid level height is higher than the second preset height value.

[0068] In this way, the height of the liquid-phase refrigerant in the compressor air supply chamber 300 can be determined based on the liquid level detection device 520, and then the amount of the liquid-phase refrigerant can be determined. Among them, both the liquid level detection device 520 and the refrigerant pump 700 are electrically connected to the control unit. The control unit can obtain the liquid level height in the compressor air supply chamber 300 detected by the liquid level detection device 520, and open or close the refrigerant pump 700 according to the liquid level height.

[0069] Further, it is opened to conduct the first liquid extraction pipeline 610 when the liquid level is lower than the first preset height value to supply liquid-phase refrigerant into the compressor air supply chamber 300, or it is closed to block the first liquid extraction pipeline 610 when the liquid level height is higher than the second preset height value, so that the control of the amount of the liquid-phase refrigerant in the compressor air supply chamber 300 can be realized, and then the stable liquid supply to the air suspension bearing space can be maintained, and the operation stability of the chiller can be improved.

[0070] Optionally, the condenser 10 further includes a check valve 800. The check valve 800 is arranged on the first liquid extraction pipeline 610 and is located between the refrigerant pump 700 and the refrigerant inlet 202, and the conduction direction is from the first liquid extraction port 201 towards the refrigerant inlet 202.

[0071] Optionally, the conduction direction of the check valve 800 is from the first liquid extraction port 201 towards the refrigerant inlet 202. By arranging the check valve 800, the liquid-phase refrigerant in the compressor air supply chamber 300 can be prevented from flowing back into the condensation cylinder body 100, so as to ensure the temperature of the liquid-phase refrigerant in the condenser 10 and ensure the operation efficiency of the chiller.

[0072] Optionally, the condenser 10 further includes a filtering device 900. The filtering device 900 is arranged on the first liquid extraction pipeline 610 and is located between the first liquid extraction port 201 and the refrigerant pump 700.

[0073] Optionally, the liquid-phase refrigerant may be doped with impurity particles and metal particles generated by wear. These fine particles flow with the liquid-phase refrigerant, and may cause pipeline blockage, deterioration of refrigeration and heating effects over time, and even abnormal wear or damage of the compressor.

[0074] The filtering device 900 is used to filter the impurities in the liquid-phase refrigerant flowing out of the first liquid extraction port 201, and prevent the impurities in the liquid-phase refrigerant from entering the compressor air supply chamber 300, so as to avoid impurity particles from entering the air suspension bearing space, and further avoid the wear influence of these particles on the bearing, and improve the service life and safety of the compressor.

[0075] Optionally, the condenser 10 further includes a first tube sheet 131, a second tube sheet 132, and a second head 122. Among them, the first tube sheet 131 is disposed inside the condensation cylinder 100, close to the first sealing plate 111, and a first water chamber 161 is formed between the first tube sheet 131 and the first sealing plate 111; the second tube sheet 132 is disposed at the second tube sheet end 102 of the condensation cylinder 100, and a condensation chamber 150 is defined between the first tube sheet 131 and the second tube sheet 132; the second head 122 is disposed at the second tube sheet end 102 and defines a second water chamber 162 with the second tube sheet 132; the first tube sheet end 101 and the second tube sheet end 102 are oppositely disposed at both ends of the condensation cylinder 100.

[0076] Optionally, a condensation chamber 150 is defined between the first tube sheet 131 and the second tube sheet 132, and heat exchange tubes are arranged in an array in the condensation chamber 150. The gaseous refrigerant enters the condensation chamber 150 from the condensation inlet of the condenser 10; a first water chamber 161 is formed between the first tube sheet 131 and the first sealing plate 111, and a second water chamber 162 is defined between the second head 122 and the second tube sheet 132. The condensed water flows into the heat exchange tubes of the first tube pass through the first water chamber 161 to condense the gaseous refrigerant in the condensation chamber 150. The condensed water in the heat exchange tubes enters the second water chamber 162 and then flows back to the first water chamber 161 through the heat exchange tubes of the second tube pass. The condensed water flowing back to the first water chamber 161 further flows out of the first water chamber 161, thereby realizing the circulation of the condensed water.

[0077] Optionally, the condenser 10 further includes a partition plate 140. Among them, the partition plate 140 is disposed in the first water chamber 161 to divide the first water chamber 161 into a condensed water outlet chamber and a condensed water inlet chamber which are distributed up and down.

[0078] Among them, the upper part of the heat exchange tube in the condensation chamber 150 of the first tube pass is connected to the condensed water outlet chamber at one end and to the second water chamber 162 at the other end; the lower part of the heat exchange tube in the condensation chamber 150 of the second tube pass is connected to the condensed water inlet chamber at one end and to the second water chamber 162 at one end.

[0079] By arranging the condensed water inlet chamber at the lower part, this helps to improve the contact effect between the condensed water and the gaseous refrigerant and enhance the condensation effect.

[0080] Optionally, the condenser 10 further includes a second sealing plate 112. The second sealing plate 112 is disposed between the first tube sheet 131 and the first sealing plate 111. A first water chamber 161 is defined between the second sealing plate 112 and the first tube sheet 131, and a heat insulation chamber is defined between the second sealing plate 112 and the first sealing plate 111.

[0081] Optionally, the heat insulation cavity can be filled with an inert gas to avoid heat transfer, so as to achieve heat insulation between the first water chamber 161 and the compressor air supply cavity 300, thereby preventing the temperature of the condensed water from affecting the temperature of the liquid-phase refrigerant in the compressor air supply cavity.

[0082] Combined with Figure 6 As shown, an embodiment of the present disclosure provides a water chiller, including an evaporator 20, a compressor 30, and the condenser 10 as described above. Among them, the evaporator 20 includes an evaporation cylinder body, and a second liquid extraction port 204 is provided at the bottom of the evaporation cylinder body; the compressor 30 includes a housing, and an inlet of an air suspension bearing space is provided on the housing; and, the condenser 10 as described above, and the refrigerant inlet 202 is also communicated with the second liquid extraction port 204.

[0083] The water chiller includes a compressor 30, a condenser 10, a throttling device, and an evaporator 20 connected in sequence, and a refrigerant circulation loop is formed through pipeline connection. Structural components such as a check valve, a flow control device, a filter, and a fluid monitoring device are also provided on the refrigerant circulation pipeline. The installation positions and installation methods can be achieved by conventional means, and will not be elaborated here. Optionally, the compressor is an air suspension compressor.

[0084] By using the water chiller provided by the embodiment of the present disclosure, by setting the space between the first sealing plate and the first head provided at the first tube sheet end of the condenser 10 as the compressor air supply cavity, the integration of the condenser 10 and the air supply tank can be achieved, thereby simplifying the structure of the water chiller; at the same time, the first liquid extraction port provided at the bottom end of the condenser 10 is communicated with the refrigerant inlet at the lower end of the first head, and the connecting pipeline can be arranged below the condenser 10, thereby shortening the length of the connecting pipeline and helping to reduce the difficulty of pipeline layout.

[0085] The chiller further includes a second liquid extraction pipeline 620, which is connected between the second liquid extraction port 204 and the refrigerant pump 700, or between the second liquid extraction port 204 and the filtering device. Wherein, a first electric ball valve is further provided between the first liquid extraction port 201 and the refrigerant pump 700, and a second electric ball valve is provided between the second liquid extraction port 204 and the refrigerant pump 700; a first electric ball valve is further provided between the first liquid extraction port 201 and the filtering device, and a second electric ball valve is provided between the second liquid extraction port 204 and the filtering device. When the compressor starts to run, the liquid refrigerant is concentrated at the bottom of the evaporator. The first electric ball valve is closed to block the first liquid extraction pipeline 610, and the second electric ball valve is opened to conduct the second liquid extraction pipeline 620. The refrigerant pump extracts the refrigerant from the bottom of the evaporator and pumps it into the compressor air supply chamber 300. After the refrigerant liquid in the subcooling zone of the condenser 10 reaches the set temperature, the second electric ball valve is closed and the first electric ball valve is opened, so that the refrigerant pump 700 extracts the refrigerant from the bottom of the condenser 10 and pumps it into the compressor air supply chamber 300. In this way, when the compressor starts initially, it is beneficial to extract liquid from the evaporator, which is beneficial to the quick start of the chiller. Further, the compressor air supply chamber 300 can extract liquid from either the condenser 10 or the evaporator, thereby reducing the negative impact on the working performance of the chiller caused by single-sided liquid extraction, improving the service life of the working components in the air supply system, and further facilitating the improvement of the reliability during the start-up and operation of the unit.

[0086] Optionally, during the operation of the chiller, the second electric ball valve can be opened according to actual needs to extract the liquid-phase refrigerant in the evaporator.

[0087] The above description and the drawings fully illustrate the embodiments of the present disclosure, enabling those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations can vary. Parts and features of some embodiments may be included in or substituted for parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A condenser, characterized in that, it includes: a condensation cylinder body, arranged horizontally, including a first tube sheet end, and a first liquid extraction port is provided at the bottom end of the condensation cylinder body; a first sealing plate, arranged at the first tube sheet end; a first head, arranged at the first tube sheet end, a compressor air supply cavity is jointly defined between the first head and the first sealing plate, wherein, a refrigerant inlet is provided at the lower end of the first head, a refrigerant outlet is provided at the upper end of the first head, the refrigerant inlet is communicated with the first liquid extraction port, and the refrigerant outlet is communicated with the inlet of the air suspension bearing space in the compressor.

2. The condenser according to claim 1, characterized in that, it further includes: a heating device, arranged in the compressor air supply cavity, and configured to heat the compressor air supply cavity.

3. The condenser according to claim 2, characterized in that, a second pressure detection device is arranged in the air suspension bearing space for detecting the second pressure in the air suspension bearing space; the condenser further includes: a first pressure detection device, arranged in the compressor air supply cavity for detecting the first pressure in the compressor air supply cavity; a control unit, electrically connected to the first pressure detection device, the second pressure detection device and the heating device, and the control unit is configured to control the heating device to operate when the difference between the first pressure and the second pressure is less than a preset difference.

4. The condenser according to claim 3, characterized in that, it further includes: a liquid level detection device, arranged in the compressor air supply cavity, and configured to detect the liquid level height in the compressor air supply cavity; a first liquid extraction pipeline, communicated between the first liquid extraction port and the refrigerant inlet; a refrigerant pump, arranged on the first liquid extraction pipeline, and the refrigerant pump is electrically connected to the control unit; when the liquid level is lower than a first preset height value, the control unit controls the refrigerant pump to open to conduct the first liquid extraction pipeline to provide liquid-phase refrigerant to the compressor air supply cavity; or, when the liquid level height is higher than a second preset height value, the control unit controls the refrigerant pump to close to block the first liquid extraction pipeline.

5. The condenser according to claim 4, characterized in that, it further includes: a check valve, arranged on the first liquid extraction pipeline and located between the refrigerant pump and the refrigerant inlet, and the conduction direction of the check valve is from the first liquid extraction port towards the refrigerant inlet.

6. The condenser according to claim 4, characterized in that, it further includes: a filtering device, arranged on the first liquid extraction pipeline and located between the first liquid extraction port and the refrigerant pump.

7. The condenser according to any one of claims 1 to 6, characterized in that, it further includes: a first tube sheet, arranged in the condensation cylinder body and close to the first sealing plate, a first water chamber is formed between the first tube sheet and the first sealing plate; a second tube sheet, arranged at the second tube sheet end of the condensation cylinder body, a condensation cavity is defined between the first tube sheet and the second tube sheet; a second head, arranged at the second tube sheet end and jointly defining a second water chamber with the second tube sheet; The first tube sheet end and the second tube sheet end are oppositely arranged at two ends of the cylinder body.

8. The condenser according to claim 7, characterized in that it further comprises: a partition plate disposed in the first water chamber to divide the first water chamber into a condensate water outlet chamber and a condensate water inlet chamber which are distributed vertically.

9. The condenser according to claim 7, characterized in that it further comprises: a second sealing plate disposed between the first tube sheet and the first sealing plate. An enclosed first water chamber is defined between the second sealing plate and the first tube sheet, and an insulating chamber is defined between the second sealing plate and the first sealing plate.

10. A water chiller, characterized in that it comprises: an evaporator including an evaporation cylinder body, and a second liquid extraction port is provided at the bottom of the evaporation cylinder body; a compressor including a housing, and an inlet of the air suspension bearing space is provided on the housing; and a condenser according to any one of claims 1 to 9, and the refrigerant inlet is further communicated with the second liquid extraction port.

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