CN213020213U - Expansion water tank for water-saving central air conditioner - Google Patents

Abstract

The utility model discloses an expansion water tank for a water-saving central air conditioner, which comprises an expansion water tank, and a first overflow pipe, a first water replenishing pipe and an expansion pipe which are respectively communicated with the inside of the expansion water tank, wherein the expansion water tank is connected with a water storage tank, the top of the water storage tank is connected with an evaporation-proof cover, and the evaporation-proof cover is provided with a rain collecting hole; the water storage tank is externally connected with a third overflow pipe, a third water supplementing pipe and a sewage discharge pipe, and a deacidification device is arranged in the water storage tank; the water storage tank is communicated with the expansion water tank through a second water supplementing pipe and a second overflow pipe, the second water supplementing pipe is provided with a water supplementing opening, the water supplementing opening is connected with an automatic water supplementing control device, the second overflow pipe is provided with an overflow opening, and the overflow opening is connected with an automatic overflow control device; the second water replenishing pipe, the second overflow pipe, the first overflow pipe and the third overflow pipe are gradually increased in height from the bottom surface of the expansion water tank. The utility model discloses expansion tank can in time adjust inside water yield, stabilizes water pressure, and it is extravagant not to overflow out water, and rain hydroenergy holds the usefulness after by the edulcoration deacidification, and the quick detachable change of collection rain device.

Description

Expansion water tank for water-saving central air conditioner

Technical Field

The utility model belongs to the technical field of the air conditioner, concretely relates to water-saving expansion tank for central air conditioning.

Background

The expansion water tank is widely applied to equipment such as a central air conditioner, a water heater, constant-pressure water supply and the like, has a certain buffering effect on the change of water pressure, and can ensure the stability of the water pressure of a system. At present, some users using central air conditioners are provided with high-position open expansion water tanks and put on roofs, and the expansion water tanks are used for accommodating the water expansion amount of an air conditioner cold and heat source system, so that the water pressure fluctuation of the system caused by the expansion of water is reduced, and the safety and the reliability of the system operation are improved. Because expansion tank installs in the eminence such as roof, when the system leaks or the system cools down because of some reason, expansion tank water level descends, for the system moisturizing, plays the effect of stable system pressure, expansion tank can discharge unnecessary water from the overflow pipe when the water storage exceeds certain limit. However, when the existing system is lack of water, water is added through manual work, so that the normal operation of the system is guaranteed, especially, the overflow water amount of the overflow pipe is large when the temperature is high in summer and daytime, the water amount of the system is insufficient after the temperature is reduced at night, the water amount added for one time is not large, the system needs to be opened manually frequently, and the workload is increased. Notice No. is CN 210801540U's utility model discloses a water-saving central air conditioning is with expansion tank retrieves the rainwater through rainwater recovery system, when rainwater recovery system's water yield is not enough, the rethread moisturizing pipe adds water in to the water tank, guarantees central air conditioning's normal operating and reduces the water consumption. But its rainwater recovery system lug connection expansion tank can influence the condition of the inside water of expansion tank when collecting the rainwater, and filter equipment is difficult to change the processing, relies on wind-force cleanness not complete. Therefore, how to provide an expansion water tank for a water-saving central air conditioner is the direction of people in the field, and the expansion water tank can collect rainwater for later use and carry out impurity removal and acid removal treatment on the collected rainwater, and a treatment device is easy to replace.

SUMMERY OF THE UTILITY MODEL

The utility model provides a be not enough to prior art exists, the utility model aims at providing a water-saving expansion tank for central air conditioning to solve the problem that proposes in the above-mentioned background art, the utility model provides a water-saving expansion tank for central air conditioning can collect the rainwater reserve and carry out edulcoration deacidification to the rainwater of collecting and handle, and processing apparatus is easily changed.

In order to achieve the above object, the utility model provides a following technical scheme: an expansion water tank for a water-saving central air conditioner comprises an expansion water tank, and a first overflow pipe, a first water supplementing pipe and an expansion pipe which are respectively communicated with the interior of the expansion water tank, wherein the top of the expansion water tank is connected with a water storage tank, the top of the water storage tank is connected with an evaporation-proof cover, and the evaporation-proof cover is provided with a rain collecting hole; the water storage tank is externally connected with a third overflow pipe, a third water supplementing pipe and a sewage discharge pipe, and a deacidification device is arranged in the water storage tank; the water storage tank is communicated with the expansion water tank through a second water supplementing pipe and a second overflow pipe, a water supplementing port is arranged on the second water supplementing pipe and is connected with an automatic water supplementing control device, an overflow port is arranged on the second overflow pipe, and the overflow port is connected with an automatic overflow control device; the heights of the second water replenishing pipe, the second overflow pipe, the first overflow pipe and the third overflow pipe from the bottom surface of the expansion water tank are gradually increased.

By adopting the scheme, the expansion water tank is communicated with the medium water of the central air-conditioning cold and heat source system through the expansion pipe so as to buffer the change of the water pressure of the medium water to a certain extent, and the water quantity in the expansion water tank is adjusted in time by additionally arranging the water storage tank and the second water replenishing pipe and the second water overflowing pipe which are communicated with the water storage tank and the expansion water tank, so that the water pressure stability of the medium water of the central air-conditioning cold and heat source system is ensured. The water storage tank is provided with sufficient space for the expansion water tank, when the expansion volume of the medium water is increased and the liquid level in the expansion water tank reaches the height of the second overflow pipe, the automatic overflow control device is opened to introduce water into the water storage tank for standby, so that the water pressure can be stabilized, the waste caused by the direct overflow of water through the first overflow pipe can be avoided, and the water can be saved; secondly, sufficient water source is provided for the expansion water tank, when the shrinkage volume of the medium water is reduced and the liquid level in the expansion water tank reaches the height of the second water replenishing pipe, the automatic water replenishing control device is opened to replenish the standby water in the water storage tank into the expansion water tank, and the water pressure is stabilized; thirdly, rainwater is collected by the expansion water tank and stored for later use, so that water is saved, meanwhile, manual water storage operation is reduced, and a deacidification device is arranged in the expansion water tank, so that even if acid rain is collected, deacidification treatment can be carried out, and the condition that the acid rain is dissolved into medium water to cause certain corrosion to equipment is avoided; fourthly, the water storage tank is arranged on the expansion water tank, so that the expansion water tank is prevented from being directly sunned by the sun in summer, and the water temperature in the expansion water tank is prevented from rising due to direct sunlight. In addition, a third water replenishing pipe on the water storage tank can be used for supplying water for standby by an external water source, and a third overflow pipe on the water storage tank can be used for overflowing when the rainwater is full.

Furthermore, the automatic water replenishing control device comprises a first floating ball, a first sliding rod and a first blocking body, wherein the first floating ball is connected with the first blocking body, the first sliding rod is fixed at the bottom in the expansion water tank and is provided with a first water through hole and a first limiting through hole, the first blocking body is matched with the water replenishing hole, and the first floating ball is matched with the first sliding rod and is in sliding connection with the first sliding rod;

the automatic overflow control device comprises a second floating ball, a second sliding rod and a second blocking body, the second blocking body is connected to the second floating ball, the second sliding rod is fixed to the inner top of the expansion water tank and provided with a second water through hole and a second limiting through hole, the second blocking body is matched with the overflow port, and the second floating ball is matched with the second sliding rod and is in sliding connection with the second sliding rod.

The sliding rods are fixedly arranged at the bottom and the top of the expansion water tank respectively, and the floating ball is connected in the sliding rods in a sliding manner, so that the horizontal movement of the floating ball is limited and the floating ball can only vertically lift along with the buoyancy of water. When the water level in the expansion water tank is lower than the second water replenishing pipe, a first floating ball in the automatic water replenishing control device moves downwards along a first limiting through hole, a first blocking body on the first floating ball moves downwards along with the first floating ball, a water replenishing port is opened, and the water storage tank replenishes water for the expansion water tank through the second water replenishing pipe; when the water level in the expansion water tank is higher than the second overflow pipe, the second floating ball in the automatic overflow control device moves upwards along the second limiting through hole, the second baffle on the second floating ball rises along with the second floating ball, the overflow port is opened, and the water in the expansion water tank preferentially overflows into the water storage tank through the second overflow pipe because the height of the first overflow pipe in the expansion water tank is higher than that of the second overflow pipe. The first water through hole and the second water through hole are arranged, so that the inner and outer water flows of the slide bar are flexible. The blocking body is preferably a cylinder, and even if the floating ball deflects at a small angle in the limiting through hole, the blocking function of the blocking body is not influenced.

Furthermore, the first floating ball is connected with a third floating ball, and the second floating ball is connected with a fourth floating ball. The increase of floater quantity can make the fender body float along with the floater when expansion tank water level height changes, and then makes the water yield in the expansion tank by quick adjustment, stabilizes water pressure.

Furthermore, the bottom of the first floating ball is connected with one end of a traction body, the other end of the traction body extends out of the expansion water tank, and a sealing gasket is connected at the joint of the traction body and the expansion water tank. The traction body may be a stainless steel wire. The traction body can be pulled down manually, the water replenishing port is opened, and the water quantity in the expansion water tank is increased.

Furthermore, heat preservation and insulation boards are arranged around the expansion water tank. The water in the expansion water tank is prevented from being influenced by the external temperature.

Furthermore, water level observation windows are arranged on the expansion water tank and the water storage tank. The water level condition in expansion tank and the water storage box can be known directly through the water level observation window.

Further, the deacidification device comprises a placing groove and a quicklime filtering layer in the placing groove. The quicklime filter layer can neutralize acid rain and perform deacidification treatment on rainwater.

Furthermore, the bottom of the placing groove is provided with an inserting body, the water storage tank is provided with a first slot, and the inserting body is matched with the first slot. The splicing arrangement is convenient for the disassembly of the placing groove and the replacement of the quicklime filter layer.

Furthermore, a rain collecting device is arranged in the rain collecting hole, and comprises a rain collecting hopper, a supporting rod, a filtering frame, a first filtering net and a second filtering net, wherein the rain collecting hopper is inserted into the rain collecting hole, the supporting rod is connected to the edge of the rain collecting hopper, the filtering frame is sleeved on the supporting rod through a first through hole on the filtering frame, and the filtering frame is internally connected with the first filtering net and the bottom of the first filtering net in a clamping mode with the second filtering net. Through connect the second filter network card to filter frame on, through pegging graft filter frame on the bracing piece, at last through fighting the collection rain and peg graft in the collection rain hole, can fight the collection area in increase collection rain hole through collection rain, carry out coarse filtration to the rainwater through first filter screen, carry out the essence through the second filter screen and filter. The setting of bracing piece is convenient for filter frame's dismantlement, and then the clearance of the filter screen of being convenient for, also is convenient for twine, block the rubbish that is blown up by wind and avoid falling on the filter screen.

Furthermore, filter frame bottom is equipped with the second through-hole, second filter screen lateral part is equipped with the second slot, the second through-hole with the second slot embeds there is the bolt, be equipped with latch device on the bolt, latch device include first spout and second spout that establish on the bolt, with the first slider of first spout looks adaptation, with first slider articulated first connecting rod, with the second slider of second spout looks adaptation, with second slider articulated second connecting rod and connection first connecting rod with the shell fragment between the second connecting rod, first connecting rod with the second connecting rod is articulated, latch device is 1-2 group.

Connect second filter screen and filtration frame through the joint mode, both be convenient for the two connect firmly, also be convenient for the replacement of second filter screen clean. Specifically, arrange the step department of filter frame bottom in with the second filter screen, can make filter frame's second through-hole align with the slot of second filter screen, insert the bolt and can make both fixed connection. When the bolt was inserted, latch device received external force and influences, and first slider is fixed and is kept away from the one end that the bolt got into the end at first spout, and articulated first connecting rod promotes second connecting rod, second slider motion in proper order, and the shell fragment is stretched and takes place deformation, and the bolt passes the second through-hole and gets into the slot, and the shell fragment resumes deformation, and the bolt passes through the latch device joint in the slot for second filter screen and filtration frame fixed connection. When the bolt was extracted, clamping device received external force and influences, and the second slider was fixed in the second spout and was close to the one end that the bolt got into the end, and articulated second connecting rod promotes first connecting rod, first slider motion in proper order, and the shell fragment is stretched and takes place deformation, and the bolt leaves the slot and gets into to the second through-hole in, and the bolt breaks away from the second through-hole at last, and the shell fragment resumes deformation, and the second filter screen breaks away from separately with filter frame. Clamping device sets up 1 group and can reach the joint purpose, and preferred setting 2 groups for it is more firm to connect.

The utility model discloses following beneficial effect has:

1. the utility model relates to a water-saving central air conditioning is with expansion tank, through set up water storage box and intercommunication water storage box and expansion tank's second moisturizing pipe and second warning pipe at expansion tank top, through the water yield in the water storage box in time adjustment expansion tank, guarantee that the medium water pressure of the cold and hot source system of central air conditioning is stable. The water storage tank is arranged to provide sufficient space for the expansion water tank, so that water overflowing from the expansion water tank can be introduced into the water storage tank for later use, the water pressure can be stabilized, and the waste caused by the direct overflow of the water to the outside can be avoided; secondly, sufficient water source is provided for the expansion water tank, and the standby water in the water storage tank can be supplemented into the expansion water tank when the expansion water tank is lack of water, so that the water pressure is stabilized; thirdly, the expansion water tank automatically stores water by collecting rainwater, manual water storage operation is reduced, and a deacidification device is arranged, so that collected acid rain can be subjected to deacidification treatment, and the acid rain is prevented from being directly dissolved into medium water to cause certain corrosion to equipment; fourthly, the water storage tank is arranged on the expansion water tank, so that the expansion water tank is prevented from being directly sunned by the sun in summer, and the water in the expansion water tank is prevented from being suddenly heated by the direct sunning temperature.

2. The utility model relates to a water-saving central air conditioning is with expansion tank, through setting up automatic water supply controlling means and automatic overflow controlling means, also be exactly through the slide bar, the floater is used with the cooperation that keeps off the body, rely on the floater to be influenced by the buoyancy of expansion tank water-logging, the situation of change of automatic perception expansion tank water-logging, when expansion tank water-logging lacks needs to supply or too much need spill over, keep off the body and float and then automatic intercommunication water storage box along with the floater, through the water yield in the water storage box of the timely automatic adjustment expansion tank.

3. The utility model relates to a water-saving central air conditioning is with expansion tank can dismantle the collection rain device of connection through the setting, when the edulcoration deacidification of being convenient for rainwater collection is handled, the nimble use and the change clearance of the device of also being convenient for.

4. The utility model relates to an expansion tank for a water-saving central air conditioner, which avoids the water in the expansion tank from being influenced by the external temperature by arranging a heat preservation and insulation board; through setting up water level observation window, be convenient for know the water level condition in expansion tank and the water storage box directly perceivedly.

Drawings

FIG. 1 is a front sectional view of an expansion tank for a water-saving central air conditioner according to the present invention;

FIG. 2 is a top view of the expansion tank for water-saving central air conditioner of the present invention;

FIG. 3 is a top view of the rain collecting device of the expansion tank for water-saving central air conditioner of the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 1;

FIG. 5 is an enlarged view of FIG. 1 at B;

fig. 6 is a bottom view of the expansion tank deacidification device for the water-saving central air conditioner of the present invention;

fig. 7 is a top view of the automatic water supply control device for an expansion tank of a water-saving central air conditioner of the present invention;

fig. 8 is a bottom view of the expansion tank automatic overflow control device for a water-saving central air conditioner of the present invention.

Number in the figure: 1. an expansion tank; 2. a first overflow pipe; 3. a first water replenishing pipe; 4. an expansion tube; 5. a water storage tank; 51. a first slot; 6. an anti-evaporation cover; 61. a rain collecting hole; 7. a blow-off pipe; 8. a third overflow pipe; 9. a placement groove; 10. an insertion body; 11. a quicklime filter layer; 12. a rain collecting hopper; 13. a support bar; 14. A filter frame; 141. a first through hole; 142. a second through hole; 15. a first filter screen; 16. a second filter screen; 161. a second slot; 17. a water level observation window; 18. a second water replenishing pipe; 181. a water replenishing port; 19. A second overflow pipe; 191. an overflow port; 20. a first floating ball; 21. a gasket; 22. a traction body; 23. a first slide bar; 231. a first water passage hole; 232. a first limiting through hole; 24. a second slide bar; 241. a second water through hole; 242. a second limiting through hole; 25. a second floating ball; 26. a heat insulation plate; 27. a third floating ball; 28. A first stopper; 29. a bolt; 291. a first chute; 292. a second chute; 30. a first slider; 31. A first link; 32. a second link; 33. a second slider; 34. a spring plate; 35. a fourth floating ball; 36. a third water replenishing pipe; 37. and a second baffle body.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

Example 1

An expansion water tank for a water-saving central air conditioner is shown in figure 1 and comprises an expansion water tank 1, a first overflow pipe 2, a first water supplementing pipe 3 and an expansion pipe 4 which are respectively communicated with the interior of the expansion water tank, wherein heat preservation and insulation boards 26 are arranged around the expansion water tank 1, a water level observation window 17 is arranged on the expansion water tank 1, the top of the expansion water tank 1 is connected with a water storage tank 5, the top of the water storage tank 5 is connected with an evaporation prevention cover 6, and a rain collecting hole 61 is arranged on the evaporation prevention cover 6;

a water level observation window 17 is arranged on the side wall of the water storage tank 5, a third overflow pipe 8, a third water replenishing pipe 36 and a sewage discharge pipe 7 are outwards connected to the side wall, and a deacidification device is arranged in the side wall;

the water storage tank 5 is communicated with the expansion water tank 1 through a second water supplementing pipe 18 and a second overflow pipe 19, a water supplementing opening 181 is arranged on the second water supplementing pipe 18, the water supplementing opening 181 is connected with an automatic water supplementing control device, an overflow opening 191 is arranged on the second overflow pipe 19, and the overflow opening 191 is connected with an automatic overflow control device;

the heights of the second water replenishing pipe 18, the second overflow pipe 19, the first overflow pipe 2 and the third overflow pipe 8 from the bottom surface of the expansion tank 1 are gradually increased.

The expansion water tank 1 is provided with larger space and more water through the water storage tank 5, the height of the second water supplementing pipe 18, the second overflow pipe 19, the first overflow pipe 2 and the third overflow pipe 8 from the bottom surface of the expansion water tank 1 is gradually increased, the water supplementing port 181 on the second water supplementing pipe 18 is connected with an automatic water supplementing control device, and the water overflowing port 191 on the second overflow pipe 19 is connected with an automatic water overflowing control device, so when the expansion water tank 1 is short of water, automatic water supplementing is preferentially carried out through the second water supplementing pipe 18 communicated with the water storage tank 5 to stabilize water pressure; when the water overflows from the expansion water tank 1, the water overflows into the water storage tank 5 preferentially through the second overflow pipe 19 communicated with the water storage tank 5, so that the water pressure is stabilized and the water is prevented from directly overflowing to the outside and being wasted. In addition, when the water in the expansion water tank 1 reaches the height of the first overflow pipe 2, the first overflow pipe 2 assists to accelerate the drainage to the outside, and when the water level in the water storage tank 5 reaches the height of the third overflow pipe 8, the water storage tank 5 automatically drains water to the outside, so that the phenomenon that the water in the water storage tank 5 excessively affects the work of the expansion water tank 1 is avoided. In addition, the water storage tank 5 is arranged at the top of the expansion water tank 1, and the heat-preservation and insulation boards 26 are arranged around the expansion water tank 1, so that direct sunlight is prevented from irradiating the expansion water tank 1 in summer, and the water in the expansion water tank is prevented from being influenced by the external temperature. Prevent evaporating the lid 6 through the setting and avoid the evaporation of water-storage box 5 internal water extravagant, automatic collection rainwater holds the usefulness when being convenient for to rain through set up collection rain hole 61 on preventing evaporating the lid 6, not only reduces artifical retaining operation number of times, also can the using water wisely. The water level of the water storage tank 5 is observed through the water level observation window 17 on the side wall of the water storage tank 5, and then whether an external water source stores water for standby through the third water replenishing pipe 36 is determined.

Specifically, as shown in fig. 1-4, a rain collecting device is arranged in the rain collecting hole 61, the rain collecting device includes a rain collecting hopper 12, a support rod 13, a filter frame 14, a first filter screen 15 and a second filter screen 16, the rain collecting hopper 12 is inserted into the rain collecting hole 61, the support rod 13 is fixedly connected to the edge of the rain collecting hopper 12, the filter frame 14 is sleeved on the support rod 13 through a first through hole 141 on the filter frame 14, the filter frame 14 is internally connected with the first filter screen 15, and the bottom of the filter frame is clamped with the second filter screen 16. The rain collecting area of the rain collecting hole 61 is enlarged through the rain collecting hopper 12, the filtering frame 14 can be inserted through the supporting rod 13, and the garbage blown up by wind can be wound and blocked to avoid falling onto the filtering net. First filter 15 can carry out coarse filtration to the rainwater, and second filter 16 can carry out the fine filtration to the rainwater.

Specifically, as shown in fig. 1 and 5, the bottom of the filter frame 14 is provided with a second through hole 142, the side of the second filter screen 16 is provided with a second slot 161, a latch 29 is disposed in the through hole 142 and the second slot 161, a latch device is disposed on the latch 29, the latch device includes a first sliding slot 291 and a second sliding slot 292 disposed on the latch 29, a first slider 30 adapted to the first sliding slot 291, a first connecting rod 31 hinged to the first slider 30, a second slider 33 adapted to the second sliding slot 292, a second connecting rod 32 hinged to the second slider 33, and a resilient tab 34 connected between the first connecting rod 31 and the second connecting rod 32, wherein the first connecting rod 31 is hinged to the second connecting rod 32. The clamping devices are 1-2 groups, preferably 2 groups, and are more stable. By inserting the latch 29 into the through hole 142 and the second slot 161, the elastic sheet 34 of the latch device makes the first connecting rod 31 and the second connecting rod 32 hinged to each other contact the inner wall of the second slot 161, and the second filter screen 16 is latched to the filter frame 14.

Specifically, as shown in fig. 1 and 6, the deacidification device comprises a placing groove 9 and a quicklime filter layer 11 therein, an insertion body 10 is arranged at the bottom of the placing groove 9, a first slot 51 is arranged on the water storage tank 5, and the insertion body 10 is matched with the first slot 51. Quick lime filter layer 11 can take off the acidizing to the acid rain, and standing groove 9 is connected to water storage box 5 with the mode of pegging graft on, the dismantlement of standing groove 9 of being convenient for, the replacement of quick lime filter layer 11 of being convenient for.

Specifically, as shown in fig. 1 and 7, the automatic water replenishing control device includes a first floating ball 20, a first sliding rod 23, and a first blocking body 28. The first floating ball 20 is connected with a first blocking body 28, a third floating ball 27 and a traction body 22, the first blocking body 28 is matched with the water replenishing port 181, the traction body 22 extends out of the expansion water tank 1, and the joint of the traction body 22 and the expansion water tank 1 is connected with a sealing gasket 21. The first sliding rod 23 is fixed at the bottom in the expansion tank 1, and is provided with a first water through hole 231 and a first limit through hole 232, and the first floating ball 20 is matched with the first sliding rod 23 and is connected with the first sliding rod 23 in a sliding manner. The arrangement of the first water through hole 231 facilitates flexible water flow inside and outside the first sliding rod 23; the first limiting through hole 232 is arranged to limit and guide the movement of the first floating ball 20; the third floating ball 27 is arranged to increase buoyancy so that the first blocking body 28 moves rapidly along with the first floating ball 20, so that the water quantity in the expansion water tank can be adjusted rapidly to stabilize the water pressure; the setting of traction body 22 is convenient for the operator through the water level observation window 17 on expansion tank 1 observe behind the water level in expansion tank 1, whether manual pulling traction body 22 carries out the moisturizing to expansion tank 1 by oneself.

Specifically, as shown in fig. 1 and 8, the automatic overflow control device includes a second floating ball 25, a second sliding rod 24 and a second stopper 37. The second floating ball 25 is connected with a second blocking body 37 and a fourth floating ball 35, the second sliding rod 24 is fixed at the top in the expansion water tank 1 and is provided with a second through hole 241 and a second limiting through hole 242, the second blocking body 37 is matched with the overflow opening 191, and the second floating ball 25 is matched with the second sliding rod 24 and is in sliding connection with the second sliding rod 24.

The working principle is as follows: when raining, rainwater sequentially passes through the rainwater collection hopper 12, the first filter screen 15, the second filter screen 16 and the placing groove 9 to be subjected to rough filtration, fine filtration and impurity removal, and neutralization and deacidification treatment by the quicklime filter layer 11, and then enters the water storage tank 5; when the rain does not fall, the water storage tank 5 is stored by connecting the third water replenishing pipe 36 with the water source, so that the water in the water storage tank 5 is ensured to be as much as possible, and at least not lower than the horizontal plane where the second water replenishing pipe 18 is located, and the water can be automatically replenished for the expansion water tank 1. When the expansion water tank 1 is short of water, namely the water level in the expansion water tank 1 is lower than the second water replenishing pipe 18, the first blocking body 28 on the first floating ball 20 in the automatic water replenishing device moves downwards along the first limiting through hole 232 along with the first floating ball 20 and the third floating ball 27, the water replenishing port 181 is opened, and the water in the water storage tank 5 enters the expansion water tank 1 through the second water replenishing pipe 18 to automatically replenish water to the expansion water tank 1; when the expansion tank 1 overflows, that is, the water level in the expansion tank 1 is higher than the second overflow pipe 19, the second blocking body 37 on the second floating ball 25 in the automatic overflow control device rises along the second limiting through hole 242 along with the second floating ball 25 and the fourth floating ball 35, the overflow opening 191 is opened, the water in the expansion tank 1 automatically enters the water storage tank 5 through the second overflow pipe 19, and the water in the expansion tank 1 is prevented from directly overflowing to the outside through the first overflow pipe 2 and being wasted.

To sum up, the expansion tank for water-saving central air conditioning in this embodiment can collect rainwater and reserve in 5, also can collect the water that expansion tank 1 overflows and reserve in 5 water storage tanks, carries out the using water wisely from above-mentioned two aspects, and water storage tank 5 can be automatic for 1 moisturizing of expansion tank when the interior water shortage of expansion tank 1, reduces artifical moisturizing operation, and can carry out edulcoration deacidification treatment to the rainwater of collecting, and the rain device of collection is easily changed, and the filter screen is easily cleared up, and this expansion tank convenient to use, the labour saving in operation.

It should be finally noted that the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention and not for limiting the same, and although the embodiments of the present invention are described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the embodiments of the present invention can still be modified or replaced with equivalents, and these modifications or equivalent replacements cannot make the modified technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. An expansion water tank for a water-saving central air conditioner comprises an expansion water tank (1), and a first overflow pipe (2), a first water replenishing pipe (3) and an expansion pipe (4) which are respectively communicated with the interior of the expansion water tank, and is characterized in that the top of the expansion water tank (1) is connected with a water storage tank (5), the top of the water storage tank (5) is connected with an evaporation-proof cover (6), and the evaporation-proof cover (6) is provided with a rain collecting hole (61);

the water storage tank (5) is externally connected with a third overflow pipe (8), a third water replenishing pipe (36) and a sewage discharge pipe (7), and a deacidification device is arranged in the water storage tank;

the water storage tank (5) is communicated with the expansion water tank (1) through a second water supplementing pipe (18) and a second overflow pipe (19), a water supplementing opening (181) is formed in the second water supplementing pipe (18), the water supplementing opening (181) is connected with an automatic water supplementing control device, an overflow opening (191) is formed in the second overflow pipe (19), and the overflow opening (191) is connected with an automatic overflow control device;

the heights of the second water replenishing pipe (18), the second overflow pipe (19), the first overflow pipe (2) and the third overflow pipe (8) from the bottom surface of the expansion water tank (1) are gradually increased.

2. An expansion tank for a water-saving central air-conditioning according to claim 1, wherein the automatic water-replenishing control device comprises a first floating ball (20), a first sliding rod (23) and a first blocking body (28), the first floating ball (20) is connected with the first blocking body (28), the first sliding rod (23) is fixed at the bottom in the expansion tank (1) and is provided with a first water through hole (231) and a first limiting through hole (232), the first blocking body (28) is matched with the water replenishing port (181), and the first floating ball (20) is matched with the first sliding rod (23) and is connected with the first sliding rod (23) in a sliding manner;

the automatic overflow control device comprises a second floating ball (25), a second sliding rod (24) and a second blocking body (37), the second floating ball (25) is connected with the second blocking body (37), the second sliding rod (24) is fixed to the inner top of the expansion water tank (1) and provided with a second through hole (241) and a second limiting through hole (242), the second blocking body (37) is matched with the overflow port (191), and the second floating ball (25) is matched with the second sliding rod (24) and is in sliding connection with the second sliding rod (24).

3. A water-saving expansion tank for central air conditioners according to claim 2, wherein a third floating ball (27) is connected to the first floating ball (20); and a fourth floating ball (35) is connected to the second floating ball (25).

4. A water-saving expansion tank for central air-conditioning according to claim 2, characterized in that the bottom of the first floating ball (20) is connected with one end of a traction body (22), the other end of the traction body (22) extends out of the expansion tank (1), and the joint of the traction body (22) and the expansion tank (1) is connected with a gasket (21).

5. A water-saving expansion tank for central air conditioners according to claim 1, wherein the expansion tank (1) is provided with heat insulating panels (26) around.

6. A water-saving expansion tank for central air-conditioning according to claim 1, wherein the expansion tank (1) and the water storage tank (5) are both opened with water level observation windows (17).

7. A water-saving expansion tank for central air conditioners according to claim 1, wherein the deacidification device comprises a placing tank (9) and a quicklime filter layer (11) therein.

8. A water-saving expansion tank for central air-conditioning according to claim 7, characterized in that the bottom of said placing tank (9) is provided with an insertion body (10), said water storage tank (5) is provided with a first insertion slot (51), and said insertion body (10) is adapted to said first insertion slot (51).

9. A water-saving expansion tank for central air-conditioning according to claim 1, wherein a rain collecting device is arranged in the rain collecting hole (61), the rain collecting device comprises a rain collecting hopper (12), a support rod (13), a filter frame (14), a first filter screen (15) and a second filter screen (16), the rain collecting hopper (12) is inserted into the rain collecting hole (61), the support rod (13) is connected to the edge of the rain collecting hopper (12), the filter frame (14) is sleeved on the support rod (13) through a first through hole (141) on the filter frame, and the filter frame (14) is internally connected with the first filter screen (15) and the bottom of the filter frame is clamped with the second filter screen (16).

10. An expansion tank for a water-saving central air-conditioning according to claim 9, wherein the bottom of the filtering frame (14) is provided with a second through hole (142), the side of the second filtering screen (16) is provided with a second slot (161), a bolt (29) is arranged in the second through hole (142) and the second slot 161, a latch device is arranged on the bolt (29), the latch device comprises a first chute (291) and a second chute (292) arranged on the bolt (29), a first slider (30) adapted to the first chute (291), a first connecting rod (31) hinged to the first slider (30), a second slider (33) adapted to the second chute (292), a second connecting rod (32) hinged to the second slider (33), and a spring plate (34) connected between the first connecting rod (31) and the second connecting rod (32), the first connecting rod (31) is hinged with the second connecting rod (32);

the clamping devices are 1-2 groups.

Images