CN219299987U - Special constant temperature valve core for gas water heater - Google Patents

Abstract

The utility model discloses a special constant-temperature valve core for a gas water heater, which comprises a shell assembly, wherein the shell assembly is provided with a first cavity, a cold water inlet and a hot water inlet, the cold water inlet and the hot water inlet penetrate through the first cavity, a water-proof ring is arranged in the first cavity, the hot water inlet is divided into a first hot water inlet and a second hot water inlet by the water-proof ring, and two hot water inlets are arranged, so that the hot water supply quantity can be increased, the gas water heater can always meet the ignition condition, and the flameout of gas is avoided; in addition, when the hot water temperature of the solar water heater is not high enough in winter, the two hot water inlets can increase the hot water inflow, so that the hot water temperature is increased, and the requirement of the shower water outlet temperature is met; and the water inlet of the shell is communicated with most of main bodies with only two cold and hot water inlets on the market, so that the general adaptation of the valve core is improved, the waterway of the main body matched with the valve core is simplified, and additional design matching is not needed.

Description

Special constant temperature valve core for gas water heater

Technical Field

The utility model relates to the technical field of bathroom products, in particular to a special constant-temperature valve core for a gas water heater.

Background

In the bathroom field, thermostatic valve cores have been widely used in products; when the gas water heater is used for bathing in summer, because the temperature of cold water is high, hot water needed for bathing is less, hot water is less, cold water naturally entering the gas water heater is less, or the flow rate of cold water entering the water heater is small, misfire, intermittent ignition or flameout can occur, and the service life of the gas water heater is influenced. In order to protect the water heater, the cold water flow needs to reach a certain flow for the gas water heater to be started. In chinese patent application number CN202021506908.7 (a thermostatic cartridge for a double hot water cartridge), this problem is mentioned and solved, however, the cartridge of the double hot water cartridge causes the cartridge-matched main body to change with the cartridge, and the cartridge-matched main body is not able to be matched with the common cold and hot water cartridge; the valve element has extremely poor fit.

Disclosure of Invention

The utility model provides a special constant-temperature valve core for a gas water heater for solving the problems.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a special thermostatic valve core for a gas water heater, comprising:

the shell assembly comprises an upper shell and a base, wherein the upper shell is connected with the base to form a first cavity, a cold water inlet and a hot water inlet are sequentially formed in the side wall of the upper shell from top to bottom, the cold water inlet and the hot water inlet are communicated with the first cavity, and a water outlet is formed in the end face of the base, which is far away from one side of the upper shell;

the plunger is accommodated in the first cavity and used for adjusting the water passing areas of the cold water inlet and the hot water inlet; and

the water-proof ring is accommodated in the first cavity and arranged between the plunger and the base, a first hot water inlet is formed between the upper end face of the water-proof ring and the plunger, a second hot water inlet is formed between the lower end face of the water-proof ring and the upper end face of the base, and the water-proof ring is used for adjusting the water passing area of the first hot water inlet and the second hot water inlet.

Preferably, the device further comprises a transmission assembly accommodated in the first cavity and arranged above the plunger, the transmission assembly comprises a protection spring, a guide rod, an adjusting handle and a jacking column, the protection spring is arranged above the jacking column, the guide rod is sleeved on the jacking column, the protection spring is limited in the guide rod, the adjusting handle is rotatably connected with the guide rod, the upper shell is sleeved on the guide rod and the adjusting handle, and the adjusting handle is limited on the upper shell through a clamp spring.

Preferably, the water-proof device further comprises a temperature bulb arranged below the transmission assembly, wherein the diameters of two ends of the temperature bulb are small, the diameter of the middle section of the temperature bulb is large, and the middle section of the temperature bulb is arranged below the plunger, penetrates through the plunger and the water-proof ring and extends out of the water outlet.

Preferably, the hydraulic pump further comprises a spring assembly accommodated in the first cavity and below the water-proof ring, the spring assembly comprises an auxiliary spring and a working spring, the auxiliary spring is arranged below the water-proof ring, the working spring is arranged below the middle section, the auxiliary spring is used for pushing the water-proof ring to move upwards, and the working spring is used for pushing the middle section and pushing the plunger to move upwards.

Preferably, the resultant force value of the auxiliary spring and the working spring is less than 1/2 of the force value of the protection spring.

Preferably, a limiting boss is annularly arranged in the inner cavity of the upper shell, and the limiting boss is arranged in the middle of the hot water inlet, so that the water-proof ring is limited by the limiting boss.

Preferably, the water-proof ring comprises a first side wall, a first end face and a second end face, wherein the first end face and the second end face are arranged on the upper surface and the lower surface of the first side wall, the first side wall and the inner surface of the first end face form a through second cavity, a first through hole and a plurality of first water through holes which encircle the first through hole and are communicated with the first through hole are arranged on the first end face, a limit ring is arranged on one side, close to the first end face, of the first side wall, and the limit ring and the limit boss are correspondingly arranged.

Preferably, the plunger comprises a first column body, a second side wall and a third end face, the second side wall is connected with the first column body through the third end face, a plurality of second water passing holes are formed in the third end face, the first column body is provided with a third cavity, a second sealing groove is formed in the outer surface of the second side wall, and the middle section is arranged below the first column body.

Preferably, the base is provided with a fourth cavity, a first step surface and a second step surface are arranged in the fourth cavity, the first step surface is used for supporting the auxiliary spring, and the second step surface is used for supporting the working spring.

Preferably, a first thread is arranged on the outer surface of the side wall of the base close to one end of the upper shell, and a third sealing groove is arranged below the first thread; a second thread is arranged on the inner surface of the side wall of the upper shell, which is close to one end of the base; the outer surface of the side wall of the upper shell is respectively provided with a fourth sealing groove and a fifth sealing groove, the fourth sealing groove is arranged above the cold water inlet, and the fifth sealing groove is arranged between the cold water inlet and the hot water inlet.

The beneficial effects of the utility model are as follows:

1) The water inlet of the shell is communicated with most of main bodies with only two cold and hot water inlets on the market, so that the general adaptation of the valve core is improved, the waterway of the main body matched with the valve core is simple and simplified, additional design matching is not needed, the valve core is simple in structure and easy to manufacture, and the structure of a kitchen and toilet product using the valve core is simple, the process is simplified, and the cost is saved.

2) The hot water inlet is divided into the first hot water inlet and the second hot water inlet through the water isolation ring and communicated with the first cavity, the first hot water inlet is set to be normal hot water inlet, and the second hot water inlet is set to be auxiliary hot water inlet, so that the hot water supply quantity can be increased, the gas water heater can always meet the ignition condition, and gas flameout is avoided; moreover, when the hot water temperature of the solar water heater is not high enough in winter, the two hot water inlets can increase the hot water inflow, so that the hot water temperature is improved, and the water outlet temperature requirement of a shower is met.

3) And setting the resultant force value of the auxiliary spring and the working spring to be smaller than 1/2 of the force value of the protection spring, after the cold water is cut off, enabling the plunger to overcome the force value of the working spring and seal the water-proof ring, pushing the auxiliary spring, enabling the water-proof ring to seal the upper end face of the base, blocking the first hot water inlet and the second hot water inlet, and completely cutting off hot water inflow.

4) The first water passing hole on the water isolation ring is a semicircular hole, so that the mixing area of cold and hot water is increased, and the mixing effect of the cold and hot water is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a block diagram of a special thermostatic valve core for a gas water heater.

Fig. 2 is an exploded view of a thermostatic valve core special for a gas water heater.

Fig. 3 is an isometric view of an upper housing of a dedicated thermostatic cartridge for a gas water heater of the present utility model.

Fig. 4 is an isometric view of a water-proof ring of a special thermostatic valve core for a gas water heater.

Fig. 5 is a second perspective view of a water-proof ring of a special thermostatic valve core for a gas water heater.

Fig. 6 is a structural diagram of a normal water outlet state of a thermostatic valve core special for a gas water heater.

Fig. 7 is a block diagram of a cold water cut-off state of a thermostatic valve core dedicated to a gas water heater according to the present utility model.

Reference numerals in the drawings:

1. a housing assembly; 11. an upper housing; 111. a cold water inlet; 112. a hot water inlet; 113. a limit boss; 114. a second thread; 115. a fourth seal groove; 116. a fifth seal groove; 12 bases; 121. a water outlet; 122. a fourth cavity; 123. a first step surface; 124. a second step surface; 125. a first thread; 126. a third seal groove; 13. a first cavity;

2. a plunger; 21. a first column; 22. a second sidewall; 23. a second water passing hole; 24. a second seal groove;

3. a water-stop ring; 31. a first sidewall; 32. a first end face; 33. a second end face; 34. a limit ring; 35. a first through hole; 36. a first water passing hole;

4. a transmission assembly; 41. a protection spring; 42. a guide rod; 43. an adjusting handle; 44. a top column; 45. clamping springs;

5. a spring assembly; 51. an auxiliary spring; 52. a working spring;

6. and (5) a temperature pack.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear and obvious, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1 to 7, a special thermostatic valve core for a gas water heater according to a preferred embodiment of the present utility model includes a housing assembly 1, a plunger 2, a waterproof ring 3, a transmission assembly 4, a spring assembly 5, and a bulb 6; the shell assembly 1 comprises an upper shell 11 and a base 12, wherein the upper shell 11 and the base 12 are connected with each other and form a first cavity 13, a cold water inlet 111 and a hot water inlet 112 are sequentially formed in the side wall of the upper shell 11 from top to bottom, the cold water inlet 111 and the hot water inlet 112 are communicated with the first cavity 13, and a water outlet 121 is formed in the end surface of the base 12, which is far away from one side of the upper shell 11; the plunger 2 is accommodated in the first cavity 13 and is used for adjusting the water passing area of the cold water inlet 111 and the hot water inlet 112; the water-proof ring 3 is accommodated in the first cavity 13 and is arranged between the plunger 2 and the base 12, a first hot water inlet is formed between the upper end surface of the water-proof ring 3 and the plunger 2, a second hot water inlet is formed between the lower end surface of the water-proof ring 3 and the upper end surface of the base 12, and the water-proof ring 3 is used for adjusting the water passing areas of the first hot water inlet and the second hot water inlet; the transmission assembly 4 comprises a protection spring 41 which is accommodated in the first cavity 13 and is arranged above the plunger 2 for pushing the plunger 2 to move downwards; the spring assembly 5 is accommodated in the first cavity 13 and arranged below the water-proof ring 3, and is used for pushing the water-proof ring 3 and the plunger 2 to move upwards; the two ends of the temperature bulb 6 are small in diameter, the middle section is large in diameter, the temperature bulb 6 is arranged below the transmission assembly 4, the middle section is arranged below the plunger 2, penetrates through the plunger 2 and the waterproof ring 3, and extends out of the water outlet 121.

In this embodiment, the spring assembly 5 includes an auxiliary spring 51 and a working spring 52, where the auxiliary spring 51 is disposed below the water-proof ring 3, when the cold water inlet 111 is opened, the water pressure may make the water-proof ring 3 move downward, and when the water passing area of the second hot water inlet 112 is too large, the auxiliary spring 51 pushes the water-proof ring 3 to move upward to adjust the water passing areas of the first hot water inlet and the second hot water inlet, so that the water passing areas of the first hot water inlet and the second hot water inlet are adjusted and balanced; the working spring 52 is arranged below the middle section, the transmission assembly enables the cold water inlet 111 to be opened, the plunger 2 can push the temperature bulb 6 to move downwards, the temperature bulb 6 senses the water temperature in the first cavity to expand and contract, the working spring 52 pushes the middle section, and enables the middle section to push the plunger 2 to move upwards, so that the water passing area and the water passing quantity of the cold water inlet 111 and the hot water inlet 112 can be adjusted; the resultant force value of the auxiliary spring 51 and the working spring 52 is smaller than 1/2 of the force value of the protection spring 41, and in the use process, after the cold water is cut off, the plunger 2 overcomes the force value of the working spring 52 and seals with the water-proof ring 3, the auxiliary spring 51 is pushed again, the water-proof ring 3 and the hot water inlet of the base 12 are closed, and the hot water inlet of the first hot water inlet and the hot water inlet of the second hot water inlet is completely cut off.

In this embodiment, the base 12 has a fourth cavity 122, a first step surface 123 and a second step surface 124 are disposed in the fourth cavity 122, the first step surface 123 is used for supporting the auxiliary spring 51, and the second step surface 124 is used for supporting the working spring 52; a first thread 125 is arranged on the outer surface of the side wall of the base 12 near one end of the upper shell 11, and a third sealing groove 126 is arranged below the first thread 125; a second thread 114 is arranged on the inner surface of the side wall of the upper shell 11 near one end of the base 12; connecting the upper housing 11 with the base 12 by the first screw 125 and the second screw 114; a fourth sealing groove 115 and a fifth sealing groove 116 are respectively arranged on the outer surface of the side wall of the upper shell 11, the fourth sealing groove 115 is arranged above the cold water inlet 111, the fifth sealing groove 116 is arranged between the cold water inlet 111 and the hot water inlet 112, and the sixth sealing groove 117 is arranged between the second water inlet 112 and the third water inlet 113; the third seal groove 126, the fourth seal groove 115, and the fifth seal groove 116 are respectively sleeved with a first seal ring, so that the thermostatic valve core is in sealing fit with a matching piece.

In this embodiment, the plunger 2 includes a first column 21, a second side wall 22, and a third end surface, where the second side wall 22 is connected to the first column 21 through the third end surface, a plurality of second water passing holes 23 are provided on the third end surface, the first column 21 has a third cavity, a second seal groove 24 is provided on an outer surface of the second side wall 22, and a second seal ring is sleeved on the second seal groove 24, so that the plunger 2 is in sealing fit with the upper housing 11; the middle section is disposed below the first column 21.

In this embodiment, referring to fig. 4 and 5, the water-proof ring 3 includes a first side wall 31, and a first end surface 32 and a second end surface 33 disposed on the upper and lower surfaces of the first side wall 31, where the first side wall 31 and the inner surfaces of the first end surface 32 and the second end surface 33 form a second cavity penetrating; the first end face 32 is provided with a first through hole 35 and a plurality of first water passing holes 36 which encircle the first through hole 35 and are communicated with the first through hole 35; the first water passing hole 36 is a semicircular hole, and is used for increasing the mixing area of cold water and hot water, so that the mixing effect of the cold water and the hot water is improved; a stop collar 34 is disposed around the first side wall 31 adjacent to the first end surface 31. The inner cavity of the upper shell 11 is annularly provided with a limiting boss 113, the limiting boss 113 is arranged in the middle of the hot water inlet 112, and the limiting ring 34 is limited by the limiting boss 113, so that the water-proof ring 3 is limited by the upper shell 11, and the hot water inlet 112 is prevented from being closed due to unrestricted upward movement of the water-proof ring 3.

In this embodiment, the transmission assembly 4 further includes a guide rod 42, an adjustment handle 43, and a top post 44, the protection spring 41 is disposed above the top post 44, the guide rod 42 is sleeved on the top post 44, the protection spring 41 is limited in the guide rod 42, the adjustment handle 43 is rotatably connected with the guide rod 42, the upper housing 11 is sleeved on the guide rod 42 and the adjustment handle 43, and the adjustment handle 43 is limited on the upper housing 11 through a clamp spring 45; by rotating the adjusting handle 43, the guiding rod 42 is driven to move, so that the protecting spring 41 is compressed or extended, and the plunger 2 can adjust the water passing area of the cold water inlet 111 and the hot water inlet 112.

Referring to fig. 6 to 7, the working principle of the utility model is as follows: when a user uses the non-gas water heater, two water inlets of a tap or a shower product are respectively connected with a cold water inlet and a hot water inlet, when the constant-temperature valve core is used, cold water is fed into the cold water inlet 111, hot water is fed into the hot water inlet 112, and when the force value of the working spring 52 is approximately equal to the force value of the protection spring 41, the constant-temperature valve core works normally; the temperature pack 6 is a high-precision paraffin temperature pack, and the water inlet proportion of cold water and hot water is automatically adjusted according to the principle of thermal expansion and cold contraction of the paraffin temperature pack; the thermal expansion and contraction of the temperature bulb 6 drive the plunger 2 to move up and down to adjust the water inlet proportion of cold water and hot water, so as to adjust the water outlet temperature and control the water outlet temperature to be constant within a certain range. When a user uses the gas water heater or needs to have a hot water auxiliary waterway, the cold water inlet 111 is used for feeding cold water, the hot water inlet 112 is used for feeding hot water, and when the constant-temperature valve core is used normally, a hot water end is used for feeding hot water from the first hot water inlet; when the temperature of cold water in summer is high and exceeds the ignition temperature of the gas water heater, the water isolation ring 3 is regulated by the spring assembly, and the first hot water inlet and the second hot water inlet are simultaneously opened to supply hot water, so that the gas water heater has enough hot water to reach the ignition temperature. In use, if the cold water is cut off, the resultant force value of the auxiliary spring 51 and the working spring 52 is smaller than 1/2 of the force value of the protection spring 41, the plunger 2 overcomes the force value of the working spring 52, is attached to the first end face 32 of the water-stop ring 3 to seal, and pushes the auxiliary spring 51 again to attach the second end face 33 of the water-stop ring 3 to the upper end face of the base 12 to seal, so that the first hot water inlet and the second hot water inlet are closed, and the hot water inlet is completely cut off.

According to the utility model, only the cold water inlet and the hot water inlet are arranged on the shell assembly 1, and the hot water inlet is divided into two hot water inlets through the water isolation ring 3 in the shell assembly 1, so that the water inlet of the shell can be kept to be communicated with most of main bodies with only the cold water inlet and the hot water inlet on the market, the general adaptation of the valve core is improved, the waterway of the main body matched with the valve core is simplified simply, no additional design matching is needed, the valve core is simple in structure and easy to manufacture, and the structure of a kitchen and toilet product using the valve core is also simple, the process is simplified, and the cost is saved; the hot water inlet and the cold water inlet are arranged on the shell assembly 1, the hot water inlet is divided into the first hot water inlet and the second hot water inlet through the water isolation ring 3 and communicated with the first cavity, the first hot water inlet is set to be normal hot water inlet, the second hot water inlet is set to be auxiliary hot water inlet, so that the hot water supply quantity can be increased, the gas water heater can always meet the ignition condition, and the flameout of gas is avoided; moreover, when the hot water temperature of the solar water heater is not high enough in winter, the two hot water inlets can increase the hot water inflow, so that the hot water temperature is improved, and the water outlet temperature requirement of a shower is met. Setting the resultant force value of the auxiliary spring 51 and the working spring 52 to be smaller than 1/2 of the force value of the protection spring 41, after the cold water is cut off, enabling the plunger 2 to overcome the force value of the working spring 52 and seal the water-proof ring 3, pushing the auxiliary spring 51, enabling the water-proof ring 3 to seal the upper end face of the base 12, blocking the first hot water inlet and the second hot water inlet, and completely cutting off hot water inflow; the first water passing holes 36 on the water isolation ring 3 are semicircular holes, so that the mixing area of cold and hot water is increased, and the mixing effect of the cold and hot water is improved.

While the foregoing description illustrates and describes the preferred embodiments of the present utility model, as noted above, it is to be understood that the utility model is not limited to the forms disclosed herein but is not to be construed as excluding other embodiments, and that various other combinations, modifications and environments are possible and may be made within the scope of the inventive concepts described herein, either by way of the foregoing teachings or by those of skill or knowledge of the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims (10)

1. A special thermostatic valve core for a gas water heater, which is characterized by comprising:

the shell assembly comprises an upper shell and a base, wherein the upper shell is connected with the base to form a first cavity, a cold water inlet and a hot water inlet are sequentially formed in the side wall of the upper shell from top to bottom, the cold water inlet and the hot water inlet are communicated with the first cavity, and a water outlet is formed in the end face of the base, which is far away from one side of the upper shell; and

the plunger is accommodated in the first cavity and used for adjusting the water passing areas of the cold water inlet and the hot water inlet; and

the water-proof ring is accommodated in the first cavity and arranged between the plunger and the base, a first hot water inlet is formed between the upper end face of the water-proof ring and the plunger, a second hot water inlet is formed between the lower end face of the water-proof ring and the upper end face of the base, and the water-proof ring is used for adjusting the water passing area of the first hot water inlet and the second hot water inlet.

2. The special thermostatic valve core for a gas water heater according to claim 1, further comprising a transmission assembly accommodated in the first cavity and arranged above the plunger, wherein the transmission assembly comprises a protection spring, a guide rod, an adjusting handle and a jacking column, the protection spring is arranged above the jacking column, the guide rod is sleeved on the jacking column, the protection spring is limited in the guide rod, the adjusting handle is rotatably connected with the guide rod, the upper shell is sleeved on the guide rod and the adjusting handle, and the adjusting handle is limited on the upper shell through a clamp spring.

3. The special thermostatic valve core for a gas water heater according to claim 2, further comprising a temperature bulb arranged below the transmission assembly, wherein the temperature bulb is small in diameter at two ends and large in diameter in the middle section, and the middle section is arranged below the plunger, penetrates through the plunger and the water-proof ring and extends out of the water outlet.

4. The special thermostatic valve core for a gas water heater according to claim 3, further comprising a spring assembly accommodated in the first cavity and below the water-proof ring, wherein the spring assembly comprises an auxiliary spring and a working spring, the auxiliary spring is arranged below the water-proof ring, the working spring is arranged below the middle section, the auxiliary spring is used for pushing the water-proof ring to move upwards, and the working spring is used for pushing the middle section to enable the middle section to push the plunger to move upwards.

5. The thermostatic valve cartridge for a gas water heater according to claim 4, wherein a resultant force value of the auxiliary spring and the working spring is less than 1/2 of a force value of the protection spring.

6. The special thermostatic valve core for a gas water heater according to claim 5, wherein a limiting boss is annularly arranged in the inner cavity of the upper shell, and the limiting boss is arranged in the middle of the hot water inlet, so that the water-proof ring is limited by the limiting boss.

7. The special thermostatic valve core for a gas water heater according to claim 6, wherein the waterproof ring comprises a first side wall, a first end face and a second end face, wherein the first end face and the second end face are arranged on the upper surface and the lower surface of the first side wall, the first end face and the inner surface of the second end face form a through second cavity, a first through hole and a plurality of first water passing holes which encircle the first through hole and are communicated with the first through hole are arranged on the first end face, a limit ring is arranged on one side, close to the first end face, of the first side wall in a surrounding mode, and the limit ring is arranged corresponding to the limit boss.

8. The special thermostatic valve core for a gas water heater according to claim 7, wherein the plunger comprises a first cylinder, a second side wall and a third end face, the second side wall is connected with the first cylinder through the third end face, a plurality of second water passing holes are formed in the third end face, the first cylinder is provided with a third cavity, a second sealing groove is formed in the outer surface of the second side wall, and the middle section is arranged below the first cylinder.

9. The special thermostatic valve core for a gas water heater according to claim 8, wherein the base is provided with a fourth cavity, a first step surface and a second step surface are arranged in the fourth cavity, the first step surface is used for supporting the auxiliary spring, and the second step surface is used for supporting the working spring.

10. The special thermostatic valve core for the gas water heater according to claim 9, wherein a first thread is arranged on the outer surface of the side wall of the base close to one end of the upper shell, and a third sealing groove is arranged below the first thread; a second thread is arranged on the inner surface of the side wall of the upper shell, which is close to one end of the base; the outer surface of the side wall of the upper shell is respectively provided with a fourth sealing groove and a fifth sealing groove, the fourth sealing groove is arranged above the cold water inlet, and the fifth sealing groove is arranged between the cold water inlet and the hot water inlet.

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